| /* $Id: sys_sparc32.c,v 1.182.2.1 2002/02/20 08:49:24 davem Exp $ |
| * sys_sparc32.c: Conversion between 32bit and 64bit native syscalls. |
| * |
| * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) |
| * |
| * These routines maintain argument size conversion between 32bit and 64bit |
| * environment. |
| */ |
| |
| #include <linux/config.h> |
| #include <linux/kernel.h> |
| #include <linux/sched.h> |
| #include <linux/fs.h> |
| #include <linux/mm.h> |
| #include <linux/file.h> |
| #include <linux/signal.h> |
| #include <linux/utime.h> |
| #include <linux/resource.h> |
| #include <linux/times.h> |
| #include <linux/utsname.h> |
| #include <linux/timex.h> |
| #include <linux/smp.h> |
| #include <linux/smp_lock.h> |
| #include <linux/sem.h> |
| #include <linux/msg.h> |
| #include <linux/shm.h> |
| #include <linux/slab.h> |
| #include <linux/uio.h> |
| #include <linux/nfs_fs.h> |
| #include <linux/smb_fs.h> |
| #include <linux/smb_mount.h> |
| #include <linux/ncp_fs.h> |
| #include <linux/quota.h> |
| #include <linux/quotacompat.h> |
| #include <linux/module.h> |
| #include <linux/sunrpc/svc.h> |
| #include <linux/nfsd/nfsd.h> |
| #include <linux/nfsd/cache.h> |
| #include <linux/nfsd/xdr.h> |
| #include <linux/nfsd/syscall.h> |
| #include <linux/poll.h> |
| #include <linux/personality.h> |
| #include <linux/stat.h> |
| #include <linux/filter.h> |
| #include <linux/highmem.h> |
| #include <linux/highuid.h> |
| #include <linux/mman.h> |
| #include <linux/ipv6.h> |
| #include <linux/in.h> |
| #include <linux/icmpv6.h> |
| #include <linux/sysctl.h> |
| #include <linux/vmalloc.h> |
| #include <linux/dnotify.h> |
| #include <linux/netfilter_ipv4/ip_tables.h> |
| |
| #include <asm/types.h> |
| #include <asm/ipc.h> |
| #include <asm/uaccess.h> |
| #include <asm/fpumacro.h> |
| #include <asm/semaphore.h> |
| |
| #include <net/scm.h> |
| |
| /* Use this to get at 32-bit user passed pointers. */ |
| /* Things to consider: the low-level assembly stub does |
| srl x, 0, x for first four arguments, so if you have |
| pointer to something in the first four arguments, just |
| declare it as a pointer, not u32. On the other side, |
| arguments from 5th onwards should be declared as u32 |
| for pointers, and need AA() around each usage. |
| A() macro should be used for places where you e.g. |
| have some internal variable u32 and just want to get |
| rid of a compiler warning. AA() has to be used in |
| places where you want to convert a function argument |
| to 32bit pointer or when you e.g. access pt_regs |
| structure and want to consider 32bit registers only. |
| -jj |
| */ |
| #define A(__x) ((unsigned long)(__x)) |
| #define AA(__x) \ |
| ({ unsigned long __ret; \ |
| __asm__ ("srl %0, 0, %0" \ |
| : "=r" (__ret) \ |
| : "0" (__x)); \ |
| __ret; \ |
| }) |
| |
| extern asmlinkage long sys_chown(const char *, uid_t,gid_t); |
| extern asmlinkage long sys_lchown(const char *, uid_t,gid_t); |
| extern asmlinkage long sys_fchown(unsigned int, uid_t,gid_t); |
| extern asmlinkage long sys_setregid(gid_t, gid_t); |
| extern asmlinkage long sys_setgid(gid_t); |
| extern asmlinkage long sys_setreuid(uid_t, uid_t); |
| extern asmlinkage long sys_setuid(uid_t); |
| extern asmlinkage long sys_setresuid(uid_t, uid_t, uid_t); |
| extern asmlinkage long sys_setresgid(gid_t, gid_t, gid_t); |
| extern asmlinkage long sys_setfsuid(uid_t); |
| extern asmlinkage long sys_setfsgid(gid_t); |
| |
| /* For this source file, we want overflow handling. */ |
| |
| #undef high2lowuid |
| #undef high2lowgid |
| #undef low2highuid |
| #undef low2highgid |
| #undef SET_UID16 |
| #undef SET_GID16 |
| #undef NEW_TO_OLD_UID |
| #undef NEW_TO_OLD_GID |
| #undef SET_OLDSTAT_UID |
| #undef SET_OLDSTAT_GID |
| #undef SET_STAT_UID |
| #undef SET_STAT_GID |
| |
| #define high2lowuid(uid) ((uid) > 65535) ? (u16)overflowuid : (u16)(uid) |
| #define high2lowgid(gid) ((gid) > 65535) ? (u16)overflowgid : (u16)(gid) |
| #define low2highuid(uid) ((uid) == (u16)-1) ? (uid_t)-1 : (uid_t)(uid) |
| #define low2highgid(gid) ((gid) == (u16)-1) ? (gid_t)-1 : (gid_t)(gid) |
| #define SET_UID16(var, uid) var = high2lowuid(uid) |
| #define SET_GID16(var, gid) var = high2lowgid(gid) |
| #define NEW_TO_OLD_UID(uid) high2lowuid(uid) |
| #define NEW_TO_OLD_GID(gid) high2lowgid(gid) |
| #define SET_OLDSTAT_UID(stat, uid) (stat).st_uid = high2lowuid(uid) |
| #define SET_OLDSTAT_GID(stat, gid) (stat).st_gid = high2lowgid(gid) |
| #define SET_STAT_UID(stat, uid) (stat).st_uid = high2lowuid(uid) |
| #define SET_STAT_GID(stat, gid) (stat).st_gid = high2lowgid(gid) |
| |
| asmlinkage long sys32_chown16(const char * filename, u16 user, u16 group) |
| { |
| return sys_chown(filename, low2highuid(user), low2highgid(group)); |
| } |
| |
| asmlinkage long sys32_lchown16(const char * filename, u16 user, u16 group) |
| { |
| return sys_lchown(filename, low2highuid(user), low2highgid(group)); |
| } |
| |
| asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group) |
| { |
| return sys_fchown(fd, low2highuid(user), low2highgid(group)); |
| } |
| |
| asmlinkage long sys32_setregid16(u16 rgid, u16 egid) |
| { |
| return sys_setregid(low2highgid(rgid), low2highgid(egid)); |
| } |
| |
| asmlinkage long sys32_setgid16(u16 gid) |
| { |
| return sys_setgid((gid_t)gid); |
| } |
| |
| asmlinkage long sys32_setreuid16(u16 ruid, u16 euid) |
| { |
| return sys_setreuid(low2highuid(ruid), low2highuid(euid)); |
| } |
| |
| asmlinkage long sys32_setuid16(u16 uid) |
| { |
| return sys_setuid((uid_t)uid); |
| } |
| |
| asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid) |
| { |
| return sys_setresuid(low2highuid(ruid), low2highuid(euid), |
| low2highuid(suid)); |
| } |
| |
| asmlinkage long sys32_getresuid16(u16 *ruid, u16 *euid, u16 *suid) |
| { |
| int retval; |
| |
| if (!(retval = put_user(high2lowuid(current->uid), ruid)) && |
| !(retval = put_user(high2lowuid(current->euid), euid))) |
| retval = put_user(high2lowuid(current->suid), suid); |
| |
| return retval; |
| } |
| |
| asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid) |
| { |
| return sys_setresgid(low2highgid(rgid), low2highgid(egid), |
| low2highgid(sgid)); |
| } |
| |
| asmlinkage long sys32_getresgid16(u16 *rgid, u16 *egid, u16 *sgid) |
| { |
| int retval; |
| |
| if (!(retval = put_user(high2lowgid(current->gid), rgid)) && |
| !(retval = put_user(high2lowgid(current->egid), egid))) |
| retval = put_user(high2lowgid(current->sgid), sgid); |
| |
| return retval; |
| } |
| |
| asmlinkage long sys32_setfsuid16(u16 uid) |
| { |
| return sys_setfsuid((uid_t)uid); |
| } |
| |
| asmlinkage long sys32_setfsgid16(u16 gid) |
| { |
| return sys_setfsgid((gid_t)gid); |
| } |
| |
| asmlinkage long sys32_getgroups16(int gidsetsize, u16 *grouplist) |
| { |
| u16 groups[NGROUPS]; |
| int i,j; |
| |
| if (gidsetsize < 0) |
| return -EINVAL; |
| i = current->ngroups; |
| if (gidsetsize) { |
| if (i > gidsetsize) |
| return -EINVAL; |
| for(j=0;j<i;j++) |
| groups[j] = current->groups[j]; |
| if (copy_to_user(grouplist, groups, sizeof(u16)*i)) |
| return -EFAULT; |
| } |
| return i; |
| } |
| |
| asmlinkage long sys32_setgroups16(int gidsetsize, u16 *grouplist) |
| { |
| u16 groups[NGROUPS]; |
| int i; |
| |
| if (!capable(CAP_SETGID)) |
| return -EPERM; |
| if ((unsigned) gidsetsize > NGROUPS) |
| return -EINVAL; |
| if (copy_from_user(groups, grouplist, gidsetsize * sizeof(u16))) |
| return -EFAULT; |
| for (i = 0 ; i < gidsetsize ; i++) |
| current->groups[i] = (gid_t)groups[i]; |
| current->ngroups = gidsetsize; |
| return 0; |
| } |
| |
| asmlinkage long sys32_getuid16(void) |
| { |
| return high2lowuid(current->uid); |
| } |
| |
| asmlinkage long sys32_geteuid16(void) |
| { |
| return high2lowuid(current->euid); |
| } |
| |
| asmlinkage long sys32_getgid16(void) |
| { |
| return high2lowgid(current->gid); |
| } |
| |
| asmlinkage long sys32_getegid16(void) |
| { |
| return high2lowgid(current->egid); |
| } |
| |
| /* 32-bit timeval and related flotsam. */ |
| |
| struct timeval32 |
| { |
| int tv_sec, tv_usec; |
| }; |
| |
| struct itimerval32 |
| { |
| struct timeval32 it_interval; |
| struct timeval32 it_value; |
| }; |
| |
| static inline long get_tv32(struct timeval *o, struct timeval32 *i) |
| { |
| return (!access_ok(VERIFY_READ, tv32, sizeof(*tv32)) || |
| (__get_user(o->tv_sec, &i->tv_sec) | |
| __get_user(o->tv_usec, &i->tv_usec))); |
| } |
| |
| static inline long put_tv32(struct timeval32 *o, struct timeval *i) |
| { |
| return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || |
| (__put_user(i->tv_sec, &o->tv_sec) | |
| __put_user(i->tv_usec, &o->tv_usec))); |
| } |
| |
| static inline long get_it32(struct itimerval *o, struct itimerval32 *i) |
| { |
| return (!access_ok(VERIFY_READ, i32, sizeof(*i32)) || |
| (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | |
| __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | |
| __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | |
| __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); |
| } |
| |
| static inline long put_it32(struct itimerval32 *o, struct itimerval *i) |
| { |
| return (!access_ok(VERIFY_WRITE, i32, sizeof(*i32)) || |
| (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | |
| __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | |
| __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | |
| __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); |
| } |
| |
| extern asmlinkage int sys_ioperm(unsigned long from, unsigned long num, int on); |
| |
| asmlinkage int sys32_ioperm(u32 from, u32 num, int on) |
| { |
| return sys_ioperm((unsigned long)from, (unsigned long)num, on); |
| } |
| |
| struct msgbuf32 { s32 mtype; char mtext[1]; }; |
| |
| struct ipc_perm32 |
| { |
| key_t key; |
| __kernel_uid_t32 uid; |
| __kernel_gid_t32 gid; |
| __kernel_uid_t32 cuid; |
| __kernel_gid_t32 cgid; |
| __kernel_mode_t32 mode; |
| unsigned short seq; |
| }; |
| |
| struct semid_ds32 { |
| struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */ |
| __kernel_time_t32 sem_otime; /* last semop time */ |
| __kernel_time_t32 sem_ctime; /* last change time */ |
| u32 sem_base; /* ptr to first semaphore in array */ |
| u32 sem_pending; /* pending operations to be processed */ |
| u32 sem_pending_last; /* last pending operation */ |
| u32 undo; /* undo requests on this array */ |
| unsigned short sem_nsems; /* no. of semaphores in array */ |
| }; |
| |
| struct semid64_ds32 { |
| struct ipc64_perm sem_perm; /* this structure is the same on sparc32 and sparc64 */ |
| unsigned int __pad1; |
| __kernel_time_t32 sem_otime; |
| unsigned int __pad2; |
| __kernel_time_t32 sem_ctime; |
| u32 sem_nsems; |
| u32 __unused1; |
| u32 __unused2; |
| }; |
| |
| struct msqid_ds32 |
| { |
| struct ipc_perm32 msg_perm; |
| u32 msg_first; |
| u32 msg_last; |
| __kernel_time_t32 msg_stime; |
| __kernel_time_t32 msg_rtime; |
| __kernel_time_t32 msg_ctime; |
| u32 wwait; |
| u32 rwait; |
| unsigned short msg_cbytes; |
| unsigned short msg_qnum; |
| unsigned short msg_qbytes; |
| __kernel_ipc_pid_t32 msg_lspid; |
| __kernel_ipc_pid_t32 msg_lrpid; |
| }; |
| |
| struct msqid64_ds32 { |
| struct ipc64_perm msg_perm; |
| unsigned int __pad1; |
| __kernel_time_t32 msg_stime; |
| unsigned int __pad2; |
| __kernel_time_t32 msg_rtime; |
| unsigned int __pad3; |
| __kernel_time_t32 msg_ctime; |
| unsigned int msg_cbytes; |
| unsigned int msg_qnum; |
| unsigned int msg_qbytes; |
| __kernel_pid_t32 msg_lspid; |
| __kernel_pid_t32 msg_lrpid; |
| unsigned int __unused1; |
| unsigned int __unused2; |
| }; |
| |
| |
| struct shmid_ds32 { |
| struct ipc_perm32 shm_perm; |
| int shm_segsz; |
| __kernel_time_t32 shm_atime; |
| __kernel_time_t32 shm_dtime; |
| __kernel_time_t32 shm_ctime; |
| __kernel_ipc_pid_t32 shm_cpid; |
| __kernel_ipc_pid_t32 shm_lpid; |
| unsigned short shm_nattch; |
| }; |
| |
| struct shmid64_ds32 { |
| struct ipc64_perm shm_perm; |
| unsigned int __pad1; |
| __kernel_time_t32 shm_atime; |
| unsigned int __pad2; |
| __kernel_time_t32 shm_dtime; |
| unsigned int __pad3; |
| __kernel_time_t32 shm_ctime; |
| __kernel_size_t32 shm_segsz; |
| __kernel_pid_t32 shm_cpid; |
| __kernel_pid_t32 shm_lpid; |
| unsigned int shm_nattch; |
| unsigned int __unused1; |
| unsigned int __unused2; |
| }; |
| |
| |
| /* |
| * sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation.. |
| * |
| * This is really horribly ugly. |
| */ |
| #define IPCOP_MASK(__x) (1UL << ((__x)&~IPC_64)) |
| static int do_sys32_semctl(int first, int second, int third, void *uptr) |
| { |
| union semun fourth; |
| u32 pad; |
| int err = -EINVAL; |
| |
| if (!uptr) |
| goto out; |
| err = -EFAULT; |
| if (get_user (pad, (u32 *)uptr)) |
| goto out; |
| if ((third & ~IPC_64) == SETVAL) |
| fourth.val = (int)pad; |
| else |
| fourth.__pad = (void *)A(pad); |
| if (IPCOP_MASK (third) & |
| (IPCOP_MASK (IPC_INFO) | IPCOP_MASK (SEM_INFO) | IPCOP_MASK (GETVAL) | |
| IPCOP_MASK (GETPID) | IPCOP_MASK (GETNCNT) | IPCOP_MASK (GETZCNT) | |
| IPCOP_MASK (GETALL) | IPCOP_MASK (SETALL) | IPCOP_MASK (IPC_RMID))) { |
| err = sys_semctl (first, second, third, fourth); |
| } else if (third & IPC_64) { |
| struct semid64_ds s; |
| struct semid64_ds32 *usp = (struct semid64_ds32 *)A(pad); |
| mm_segment_t old_fs; |
| int need_back_translation; |
| |
| if (third == (IPC_SET|IPC_64)) { |
| err = get_user (s.sem_perm.uid, &usp->sem_perm.uid); |
| err |= __get_user (s.sem_perm.gid, &usp->sem_perm.gid); |
| err |= __get_user (s.sem_perm.mode, &usp->sem_perm.mode); |
| if (err) |
| goto out; |
| fourth.__pad = &s; |
| } |
| need_back_translation = |
| (IPCOP_MASK (third) & |
| (IPCOP_MASK (SEM_STAT) | IPCOP_MASK (IPC_STAT))) != 0; |
| if (need_back_translation) |
| fourth.__pad = &s; |
| old_fs = get_fs (); |
| set_fs (KERNEL_DS); |
| err = sys_semctl (first, second, third, fourth); |
| set_fs (old_fs); |
| if (need_back_translation) { |
| int err2 = copy_to_user (&usp->sem_perm, &s.sem_perm, sizeof(struct ipc64_perm) + 2*sizeof(time_t)); |
| err2 |= __put_user (s.sem_nsems, &usp->sem_nsems); |
| if (err2) err = -EFAULT; |
| } |
| } else { |
| struct semid_ds s; |
| struct semid_ds32 *usp = (struct semid_ds32 *)A(pad); |
| mm_segment_t old_fs; |
| int need_back_translation; |
| |
| if (third == IPC_SET) { |
| err = get_user (s.sem_perm.uid, &usp->sem_perm.uid); |
| err |= __get_user (s.sem_perm.gid, &usp->sem_perm.gid); |
| err |= __get_user (s.sem_perm.mode, &usp->sem_perm.mode); |
| if (err) |
| goto out; |
| fourth.__pad = &s; |
| } |
| need_back_translation = |
| (IPCOP_MASK (third) & |
| (IPCOP_MASK (SEM_STAT) | IPCOP_MASK (IPC_STAT))) != 0; |
| if (need_back_translation) |
| fourth.__pad = &s; |
| old_fs = get_fs (); |
| set_fs (KERNEL_DS); |
| err = sys_semctl (first, second, third, fourth); |
| set_fs (old_fs); |
| if (need_back_translation) { |
| int err2 = put_user (s.sem_perm.key, &usp->sem_perm.key); |
| err2 |= __put_user (high2lowuid(s.sem_perm.uid), &usp->sem_perm.uid); |
| err2 |= __put_user (high2lowgid(s.sem_perm.gid), &usp->sem_perm.gid); |
| err2 |= __put_user (high2lowuid(s.sem_perm.cuid), &usp->sem_perm.cuid); |
| err2 |= __put_user (high2lowgid(s.sem_perm.cgid), &usp->sem_perm.cgid); |
| err2 |= __put_user (s.sem_perm.mode, &usp->sem_perm.mode); |
| err2 |= __put_user (s.sem_perm.seq, &usp->sem_perm.seq); |
| err2 |= __put_user (s.sem_otime, &usp->sem_otime); |
| err2 |= __put_user (s.sem_ctime, &usp->sem_ctime); |
| err2 |= __put_user (s.sem_nsems, &usp->sem_nsems); |
| if (err2) err = -EFAULT; |
| } |
| } |
| out: |
| return err; |
| } |
| |
| static int do_sys32_msgsnd(int first, int second, int third, void *uptr) |
| { |
| struct msgbuf *p; |
| struct msgbuf32 *up; |
| mm_segment_t old_fs; |
| int err; |
| |
| if (second < 0) |
| return -EINVAL; |
| |
| p = kmalloc(second + sizeof (struct msgbuf), GFP_USER); |
| if (!p) |
| return -ENOMEM; |
| |
| up = (struct msgbuf32 *)uptr; |
| err = -EFAULT; |
| if (get_user(p->mtype, &up->mtype) || |
| __copy_from_user(p->mtext, up->mtext, second)) |
| goto out; |
| |
| old_fs = get_fs(); |
| set_fs(KERNEL_DS); |
| err = sys_msgsnd(first, p, second, third); |
| set_fs(old_fs); |
| out: |
| kfree(p); |
| return err; |
| } |
| |
| static int do_sys32_msgrcv (int first, int second, int msgtyp, int third, |
| int version, void *uptr) |
| { |
| struct msgbuf32 *up; |
| struct msgbuf *p; |
| mm_segment_t old_fs; |
| int err; |
| |
| if (second < 0) |
| return -EINVAL; |
| |
| if (!version) { |
| struct ipc_kludge *uipck = (struct ipc_kludge *)uptr; |
| struct ipc_kludge ipck; |
| |
| err = -EINVAL; |
| if (!uptr) |
| goto out; |
| err = -EFAULT; |
| if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge))) |
| goto out; |
| uptr = (void *)A(ipck.msgp); |
| msgtyp = ipck.msgtyp; |
| } |
| err = -ENOMEM; |
| p = kmalloc (second + sizeof (struct msgbuf), GFP_USER); |
| if (!p) |
| goto out; |
| old_fs = get_fs (); |
| set_fs (KERNEL_DS); |
| err = sys_msgrcv (first, p, second, msgtyp, third); |
| set_fs (old_fs); |
| if (err < 0) |
| goto free_then_out; |
| up = (struct msgbuf32 *)uptr; |
| if (put_user (p->mtype, &up->mtype) || |
| __copy_to_user (up->mtext, p->mtext, err)) |
| err = -EFAULT; |
| free_then_out: |
| kfree (p); |
| out: |
| return err; |
| } |
| |
| static int do_sys32_msgctl (int first, int second, void *uptr) |
| { |
| int err; |
| |
| if (IPCOP_MASK (second) & |
| (IPCOP_MASK (IPC_INFO) | IPCOP_MASK (MSG_INFO) | |
| IPCOP_MASK (IPC_RMID))) { |
| err = sys_msgctl (first, second, (struct msqid_ds *)uptr); |
| } else if (second & IPC_64) { |
| struct msqid64_ds m; |
| struct msqid64_ds32 *up = (struct msqid64_ds32 *)uptr; |
| mm_segment_t old_fs; |
| |
| if (second == (IPC_SET|IPC_64)) { |
| err = get_user (m.msg_perm.uid, &up->msg_perm.uid); |
| err |= __get_user (m.msg_perm.gid, &up->msg_perm.gid); |
| err |= __get_user (m.msg_perm.mode, &up->msg_perm.mode); |
| err |= __get_user (m.msg_qbytes, &up->msg_qbytes); |
| if (err) |
| goto out; |
| } |
| old_fs = get_fs (); |
| set_fs (KERNEL_DS); |
| err = sys_msgctl (first, second, (struct msqid_ds *)&m); |
| set_fs (old_fs); |
| if (IPCOP_MASK (second) & |
| (IPCOP_MASK (MSG_STAT) | IPCOP_MASK (IPC_STAT))) { |
| int err2 = copy_to_user(&up->msg_perm, &m.msg_perm, sizeof(struct ipc64_perm) + 3*sizeof(time_t)); |
| err2 |= __put_user (m.msg_cbytes, &up->msg_cbytes); |
| err2 |= __put_user (m.msg_qnum, &up->msg_qnum); |
| err2 |= __put_user (m.msg_qbytes, &up->msg_qbytes); |
| err2 |= __put_user (m.msg_lspid, &up->msg_lspid); |
| err2 |= __put_user (m.msg_lrpid, &up->msg_lrpid); |
| if (err2) |
| err = -EFAULT; |
| } |
| } else { |
| struct msqid_ds m; |
| struct msqid_ds32 *up = (struct msqid_ds32 *)uptr; |
| mm_segment_t old_fs; |
| |
| if (second == IPC_SET) { |
| err = get_user (m.msg_perm.uid, &up->msg_perm.uid); |
| err |= __get_user (m.msg_perm.gid, &up->msg_perm.gid); |
| err |= __get_user (m.msg_perm.mode, &up->msg_perm.mode); |
| err |= __get_user (m.msg_qbytes, &up->msg_qbytes); |
| if (err) |
| goto out; |
| } |
| old_fs = get_fs (); |
| set_fs (KERNEL_DS); |
| err = sys_msgctl (first, second, &m); |
| set_fs (old_fs); |
| if (IPCOP_MASK (second) & |
| (IPCOP_MASK (MSG_STAT) | IPCOP_MASK (IPC_STAT))) { |
| int err2 = put_user (m.msg_perm.key, &up->msg_perm.key); |
| err2 |= __put_user (high2lowuid(m.msg_perm.uid), &up->msg_perm.uid); |
| err2 |= __put_user (high2lowgid(m.msg_perm.gid), &up->msg_perm.gid); |
| err2 |= __put_user (high2lowuid(m.msg_perm.cuid), &up->msg_perm.cuid); |
| err2 |= __put_user (high2lowgid(m.msg_perm.cgid), &up->msg_perm.cgid); |
| err2 |= __put_user (m.msg_perm.mode, &up->msg_perm.mode); |
| err2 |= __put_user (m.msg_perm.seq, &up->msg_perm.seq); |
| err2 |= __put_user (m.msg_stime, &up->msg_stime); |
| err2 |= __put_user (m.msg_rtime, &up->msg_rtime); |
| err2 |= __put_user (m.msg_ctime, &up->msg_ctime); |
| err2 |= __put_user (m.msg_cbytes, &up->msg_cbytes); |
| err2 |= __put_user (m.msg_qnum, &up->msg_qnum); |
| err2 |= __put_user (m.msg_qbytes, &up->msg_qbytes); |
| err2 |= __put_user (m.msg_lspid, &up->msg_lspid); |
| err2 |= __put_user (m.msg_lrpid, &up->msg_lrpid); |
| if (err2) |
| err = -EFAULT; |
| } |
| } |
| |
| out: |
| return err; |
| } |
| |
| static int do_sys32_shmat(int first, int second, u32 third, int version, void *uptr) |
| { |
| unsigned long raddr; |
| u32 *uaddr = (u32 *)A(third); |
| int err = -EINVAL; |
| |
| if (version == 1) |
| goto out; |
| err = sys_shmat(first, uptr, second, &raddr); |
| if (err) |
| goto out; |
| err = put_user(raddr, uaddr); |
| out: |
| return err; |
| } |
| |
| static int do_sys32_shmctl (int first, int second, void *uptr) |
| { |
| int err; |
| |
| if (IPCOP_MASK (second) & |
| (IPCOP_MASK (IPC_INFO) | IPCOP_MASK (SHM_LOCK) | IPCOP_MASK (SHM_UNLOCK) | |
| IPCOP_MASK (IPC_RMID))) { |
| if (second == (IPC_INFO|IPC_64)) |
| second = IPC_INFO; /* So that we don't have to translate it */ |
| err = sys_shmctl (first, second, (struct shmid_ds *)uptr); |
| } else if ((second & IPC_64) && second != (SHM_INFO|IPC_64)) { |
| struct shmid64_ds s; |
| struct shmid64_ds32 *up = (struct shmid64_ds32 *)uptr; |
| mm_segment_t old_fs; |
| |
| if (second == (IPC_SET|IPC_64)) { |
| err = get_user (s.shm_perm.uid, &up->shm_perm.uid); |
| err |= __get_user (s.shm_perm.gid, &up->shm_perm.gid); |
| err |= __get_user (s.shm_perm.mode, &up->shm_perm.mode); |
| if (err) |
| goto out; |
| } |
| old_fs = get_fs (); |
| set_fs (KERNEL_DS); |
| err = sys_shmctl (first, second, (struct shmid_ds *)&s); |
| set_fs (old_fs); |
| if (err < 0) |
| goto out; |
| |
| /* Mask it even in this case so it becomes a CSE. */ |
| if (IPCOP_MASK (second) & |
| (IPCOP_MASK (SHM_STAT) | IPCOP_MASK (IPC_STAT))) { |
| int err2 = copy_to_user (&up->shm_perm, &s.shm_perm, sizeof(struct ipc64_perm) + 3*sizeof(time_t)); |
| err2 |= __put_user (s.shm_segsz, &up->shm_segsz); |
| err2 |= __put_user (s.shm_nattch, &up->shm_nattch); |
| err2 |= __put_user (s.shm_cpid, &up->shm_cpid); |
| err2 |= __put_user (s.shm_lpid, &up->shm_lpid); |
| if (err2) |
| err = -EFAULT; |
| } |
| } else { |
| struct shmid_ds s; |
| struct shmid_ds32 *up = (struct shmid_ds32 *)uptr; |
| mm_segment_t old_fs; |
| |
| second &= ~IPC_64; |
| if (second == IPC_SET) { |
| err = get_user (s.shm_perm.uid, &up->shm_perm.uid); |
| err |= __get_user (s.shm_perm.gid, &up->shm_perm.gid); |
| err |= __get_user (s.shm_perm.mode, &up->shm_perm.mode); |
| if (err) |
| goto out; |
| } |
| old_fs = get_fs (); |
| set_fs (KERNEL_DS); |
| err = sys_shmctl (first, second, &s); |
| set_fs (old_fs); |
| if (err < 0) |
| goto out; |
| |
| /* Mask it even in this case so it becomes a CSE. */ |
| if (second == SHM_INFO) { |
| struct shm_info32 { |
| int used_ids; |
| u32 shm_tot, shm_rss, shm_swp; |
| u32 swap_attempts, swap_successes; |
| } *uip = (struct shm_info32 *)uptr; |
| struct shm_info *kp = (struct shm_info *)&s; |
| int err2 = put_user (kp->used_ids, &uip->used_ids); |
| err2 |= __put_user (kp->shm_tot, &uip->shm_tot); |
| err2 |= __put_user (kp->shm_rss, &uip->shm_rss); |
| err2 |= __put_user (kp->shm_swp, &uip->shm_swp); |
| err2 |= __put_user (kp->swap_attempts, &uip->swap_attempts); |
| err2 |= __put_user (kp->swap_successes, &uip->swap_successes); |
| if (err2) |
| err = -EFAULT; |
| } else if (IPCOP_MASK (second) & |
| (IPCOP_MASK (SHM_STAT) | IPCOP_MASK (IPC_STAT))) { |
| int err2 = put_user (s.shm_perm.key, &up->shm_perm.key); |
| err2 |= __put_user (high2lowuid(s.shm_perm.uid), &up->shm_perm.uid); |
| err2 |= __put_user (high2lowuid(s.shm_perm.gid), &up->shm_perm.gid); |
| err2 |= __put_user (high2lowuid(s.shm_perm.cuid), &up->shm_perm.cuid); |
| err2 |= __put_user (high2lowuid(s.shm_perm.cgid), &up->shm_perm.cgid); |
| err2 |= __put_user (s.shm_perm.mode, &up->shm_perm.mode); |
| err2 |= __put_user (s.shm_perm.seq, &up->shm_perm.seq); |
| err2 |= __put_user (s.shm_atime, &up->shm_atime); |
| err2 |= __put_user (s.shm_dtime, &up->shm_dtime); |
| err2 |= __put_user (s.shm_ctime, &up->shm_ctime); |
| err2 |= __put_user (s.shm_segsz, &up->shm_segsz); |
| err2 |= __put_user (s.shm_nattch, &up->shm_nattch); |
| err2 |= __put_user (s.shm_cpid, &up->shm_cpid); |
| err2 |= __put_user (s.shm_lpid, &up->shm_lpid); |
| if (err2) |
| err = -EFAULT; |
| } |
| } |
| out: |
| return err; |
| } |
| |
| static __inline__ void *alloc_user_space(long len) |
| { |
| struct pt_regs *regs = current->thread.kregs; |
| unsigned long usp = regs->u_regs[UREG_I6]; |
| |
| if (!(current->thread.flags & SPARC_FLAG_32BIT)) |
| usp += STACK_BIAS; |
| else |
| usp &= 0xffffffffUL; |
| |
| return (void *) (usp - len); |
| } |
| |
| struct timespec32 { |
| s32 tv_sec; |
| s32 tv_nsec; |
| }; |
| |
| static int sys32_semtimedop(int semid, struct sembuf *tsems, int nsems, |
| const struct timespec32 *timeout32) |
| { |
| struct timespec32 t32; |
| struct timespec *t64 = alloc_user_space(sizeof(*t64)); |
| |
| if (copy_from_user(&t32, timeout32, sizeof(t32))) |
| return -EFAULT; |
| |
| if (put_user(t32.tv_sec, &t64->tv_sec) || |
| put_user(t32.tv_nsec, &t64->tv_nsec)) |
| return -EFAULT; |
| |
| return sys_semtimedop(semid, tsems, nsems, t64); |
| } |
| |
| asmlinkage int sys32_ipc (u32 call, u32 first, u32 second, u32 third, s32 __ptr, s32 __fifth) |
| { |
| int version, err; |
| u32 ptr = (u32) __ptr; |
| u32 fifth = (u32) __fifth; |
| |
| version = call >> 16; /* hack for backward compatibility */ |
| call &= 0xffff; |
| |
| if (call <= SEMCTL) |
| switch (call) { |
| case SEMOP: |
| /* struct sembuf is the same on 32 and 64bit :)) */ |
| err = sys_semtimedop((int)first, |
| (struct sembuf *)A(ptr), |
| second, NULL); |
| goto out; |
| case SEMTIMEDOP: |
| err = sys32_semtimedop((int)first, |
| (struct sembuf *)A(ptr), |
| second, |
| (const struct timespec32 *) |
| A(fifth)); |
| case SEMGET: |
| err = sys_semget((key_t)first, (int)second, |
| (int)third); |
| goto out; |
| case SEMCTL: |
| err = do_sys32_semctl((int)first, (int)second, |
| (int)third, (void *) A(ptr)); |
| goto out; |
| default: |
| err = -ENOSYS; |
| goto out; |
| }; |
| if (call <= MSGCTL) |
| switch (call) { |
| case MSGSND: |
| err = do_sys32_msgsnd((int)first, (int)second, |
| (int)third, (void *)A(ptr)); |
| goto out; |
| case MSGRCV: |
| err = do_sys32_msgrcv((int)first, (int)second, |
| (int)fifth, (int)third, |
| version, (void *)A(ptr)); |
| goto out; |
| case MSGGET: |
| err = sys_msgget((key_t)first, (int)second); |
| goto out; |
| case MSGCTL: |
| err = do_sys32_msgctl((int)first, (int)second, |
| (void *)A(ptr)); |
| goto out; |
| default: |
| err = -ENOSYS; |
| goto out; |
| } |
| if (call <= SHMCTL) |
| switch (call) { |
| case SHMAT: |
| err = do_sys32_shmat((int)first, (int)second, third, |
| version, (void *)A(ptr)); |
| goto out; |
| case SHMDT: |
| err = sys_shmdt((char *)A(ptr)); |
| goto out; |
| case SHMGET: |
| err = sys_shmget((key_t)first, second, (int)third); |
| goto out; |
| case SHMCTL: |
| err = do_sys32_shmctl((int)first, (int)second, |
| (void *)A(ptr)); |
| goto out; |
| default: |
| err = -ENOSYS; |
| goto out; |
| } |
| |
| err = -ENOSYS; |
| |
| out: |
| return err; |
| } |
| |
| static inline int get_flock(struct flock *kfl, struct flock32 *ufl) |
| { |
| int err; |
| |
| err = get_user(kfl->l_type, &ufl->l_type); |
| err |= __get_user(kfl->l_whence, &ufl->l_whence); |
| err |= __get_user(kfl->l_start, &ufl->l_start); |
| err |= __get_user(kfl->l_len, &ufl->l_len); |
| err |= __get_user(kfl->l_pid, &ufl->l_pid); |
| return err; |
| } |
| |
| static inline int put_flock(struct flock *kfl, struct flock32 *ufl) |
| { |
| int err; |
| |
| err = __put_user(kfl->l_type, &ufl->l_type); |
| err |= __put_user(kfl->l_whence, &ufl->l_whence); |
| err |= __put_user(kfl->l_start, &ufl->l_start); |
| err |= __put_user(kfl->l_len, &ufl->l_len); |
| err |= __put_user(kfl->l_pid, &ufl->l_pid); |
| return err; |
| } |
| |
| extern asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg); |
| |
| asmlinkage long sys32_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg) |
| { |
| switch (cmd) { |
| case F_GETLK: |
| case F_SETLK: |
| case F_SETLKW: |
| { |
| struct flock f; |
| mm_segment_t old_fs; |
| long ret; |
| |
| if (get_flock(&f, (struct flock32 *)arg)) |
| return -EFAULT; |
| old_fs = get_fs(); set_fs (KERNEL_DS); |
| ret = sys_fcntl(fd, cmd, (unsigned long)&f); |
| set_fs (old_fs); |
| if (ret) return ret; |
| if (put_flock(&f, (struct flock32 *)arg)) |
| return -EFAULT; |
| return 0; |
| } |
| default: |
| return sys_fcntl(fd, cmd, (unsigned long)arg); |
| } |
| } |
| |
| asmlinkage long sys32_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg) |
| { |
| if (cmd >= F_GETLK64 && cmd <= F_SETLKW64) |
| return sys_fcntl(fd, cmd + F_GETLK - F_GETLK64, arg); |
| return sys32_fcntl(fd, cmd, arg); |
| } |
| |
| struct user_dqblk32 { |
| __u32 dqb_bhardlimit; |
| __u32 dqb_bsoftlimit; |
| __u32 dqb_curblocks; |
| __u32 dqb_ihardlimit; |
| __u32 dqb_isoftlimit; |
| __u32 dqb_curinodes; |
| __kernel_time_t32 dqb_btime; |
| __kernel_time_t32 dqb_itime; |
| }; |
| |
| extern asmlinkage int sys_quotactl(int cmd, const char *special, int id, caddr_t addr); |
| |
| asmlinkage int sys32_quotactl(int cmd, const char *special, int id, caddr_t addr) |
| { |
| int cmds = cmd >> SUBCMDSHIFT; |
| int err; |
| struct v1c_mem_dqblk d; |
| mm_segment_t old_fs; |
| char *spec; |
| |
| switch (cmds) { |
| case Q_V1_GETQUOTA: |
| break; |
| case Q_V1_SETQUOTA: |
| case Q_V1_SETUSE: |
| case Q_V1_SETQLIM: |
| if (copy_from_user(&d, addr, sizeof(struct user_dqblk32))) |
| return -EFAULT; |
| d.dqb_itime = ((struct user_dqblk32 *)&d)->dqb_itime; |
| d.dqb_btime = ((struct user_dqblk32 *)&d)->dqb_btime; |
| break; |
| default: |
| return sys_quotactl(cmd, special, id, addr); |
| } |
| spec = getname(special); |
| err = PTR_ERR(spec); |
| if (IS_ERR(spec)) |
| return err; |
| old_fs = get_fs(); |
| set_fs (KERNEL_DS); |
| err = sys_quotactl(cmd, (const char *)spec, id, (caddr_t)&d); |
| set_fs (old_fs); |
| putname (spec); |
| if (cmds == Q_V1_GETQUOTA) { |
| __kernel_time_t b = d.dqb_btime, i = d.dqb_itime; |
| ((struct user_dqblk32 *)&d)->dqb_itime = i; |
| ((struct user_dqblk32 *)&d)->dqb_btime = b; |
| if (copy_to_user(addr, &d, sizeof(struct user_dqblk32))) |
| return -EFAULT; |
| } |
| return err; |
| } |
| |
| static inline int put_statfs (struct statfs32 *ubuf, struct statfs *kbuf) |
| { |
| int err; |
| |
| err = put_user (kbuf->f_type, &ubuf->f_type); |
| err |= __put_user (kbuf->f_bsize, &ubuf->f_bsize); |
| err |= __put_user (kbuf->f_blocks, &ubuf->f_blocks); |
| err |= __put_user (kbuf->f_bfree, &ubuf->f_bfree); |
| err |= __put_user (kbuf->f_bavail, &ubuf->f_bavail); |
| err |= __put_user (kbuf->f_files, &ubuf->f_files); |
| err |= __put_user (kbuf->f_ffree, &ubuf->f_ffree); |
| err |= __put_user (kbuf->f_namelen, &ubuf->f_namelen); |
| err |= __put_user (kbuf->f_fsid.val[0], &ubuf->f_fsid.val[0]); |
| err |= __put_user (kbuf->f_fsid.val[1], &ubuf->f_fsid.val[1]); |
| return err; |
| } |
| |
| extern asmlinkage int sys_statfs(const char * path, struct statfs * buf); |
| |
| asmlinkage int sys32_statfs(const char * path, struct statfs32 *buf) |
| { |
| int ret; |
| struct statfs s; |
| mm_segment_t old_fs = get_fs(); |
| char *pth; |
| |
| pth = getname (path); |
| ret = PTR_ERR(pth); |
| if (!IS_ERR(pth)) { |
| set_fs (KERNEL_DS); |
| ret = sys_statfs((const char *)pth, &s); |
| set_fs (old_fs); |
| putname (pth); |
| if (put_statfs(buf, &s)) |
| return -EFAULT; |
| } |
| return ret; |
| } |
| |
| extern asmlinkage int sys_fstatfs(unsigned int fd, struct statfs * buf); |
| |
| asmlinkage int sys32_fstatfs(unsigned int fd, struct statfs32 *buf) |
| { |
| int ret; |
| struct statfs s; |
| mm_segment_t old_fs = get_fs(); |
| |
| set_fs (KERNEL_DS); |
| ret = sys_fstatfs(fd, &s); |
| set_fs (old_fs); |
| if (put_statfs(buf, &s)) |
| return -EFAULT; |
| return ret; |
| } |
| |
| extern asmlinkage long sys_truncate(const char * path, unsigned long length); |
| extern asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length); |
| |
| asmlinkage int sys32_truncate64(const char * path, unsigned long high, unsigned long low) |
| { |
| if ((int)high < 0) |
| return -EINVAL; |
| else |
| return sys_truncate(path, (high << 32) | low); |
| } |
| |
| asmlinkage int sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low) |
| { |
| if ((int)high < 0) |
| return -EINVAL; |
| else |
| return sys_ftruncate(fd, (high << 32) | low); |
| } |
| |
| extern asmlinkage int sys_utime(char * filename, struct utimbuf * times); |
| |
| struct utimbuf32 { |
| __kernel_time_t32 actime, modtime; |
| }; |
| |
| asmlinkage int sys32_utime(char * filename, struct utimbuf32 *times) |
| { |
| struct utimbuf t; |
| mm_segment_t old_fs; |
| int ret; |
| char *filenam; |
| |
| if (!times) |
| return sys_utime(filename, NULL); |
| if (get_user (t.actime, ×->actime) || |
| __get_user (t.modtime, ×->modtime)) |
| return -EFAULT; |
| filenam = getname (filename); |
| ret = PTR_ERR(filenam); |
| if (!IS_ERR(filenam)) { |
| old_fs = get_fs(); |
| set_fs (KERNEL_DS); |
| ret = sys_utime(filenam, &t); |
| set_fs (old_fs); |
| putname (filenam); |
| } |
| return ret; |
| } |
| |
| struct iovec32 { u32 iov_base; __kernel_size_t32 iov_len; }; |
| |
| typedef ssize_t (*io_fn_t)(struct file *, char *, size_t, loff_t *); |
| typedef ssize_t (*iov_fn_t)(struct file *, const struct iovec *, unsigned long, loff_t *); |
| |
| static long do_readv_writev32(int type, struct file *file, |
| const struct iovec32 *vector, u32 count) |
| { |
| __kernel_ssize_t32 tot_len; |
| struct iovec iovstack[UIO_FASTIOV]; |
| struct iovec *iov=iovstack, *ivp; |
| long retval, i; |
| io_fn_t fn; |
| iov_fn_t fnv; |
| |
| /* First get the "struct iovec" from user memory and |
| * verify all the pointers |
| */ |
| retval = 0; |
| if (!count) |
| goto out_nofree; |
| retval = -EFAULT; |
| if (verify_area(VERIFY_READ, vector, sizeof(struct iovec32)*count)) |
| goto out_nofree; |
| retval = -EINVAL; |
| if (count > UIO_MAXIOV) |
| goto out_nofree; |
| if (count > UIO_FASTIOV) { |
| retval = -ENOMEM; |
| iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL); |
| if (!iov) |
| goto out_nofree; |
| } |
| |
| tot_len = 0; |
| i = count; |
| ivp = iov; |
| retval = -EINVAL; |
| while(i > 0) { |
| __kernel_ssize_t32 tmp = tot_len; |
| __kernel_ssize_t32 len; |
| u32 buf; |
| |
| __get_user(len, &vector->iov_len); |
| __get_user(buf, &vector->iov_base); |
| if (len < 0) /* size_t not fittina an ssize_t32 .. */ |
| goto out; |
| tot_len += len; |
| if (tot_len < tmp) /* maths overflow on the ssize_t32 */ |
| goto out; |
| ivp->iov_base = (void *)A(buf); |
| ivp->iov_len = (__kernel_size_t) len; |
| vector++; |
| ivp++; |
| i--; |
| } |
| |
| /* VERIFY_WRITE actually means a read, as we write to user space */ |
| retval = rw_verify_area((type == VERIFY_WRITE ? READ : WRITE), |
| file, &file->f_pos, tot_len); |
| if (retval) |
| goto out; |
| |
| /* VERIFY_WRITE actually means a read, as we write to user space */ |
| fnv = (type == VERIFY_WRITE ? file->f_op->readv : file->f_op->writev); |
| if (fnv) { |
| retval = fnv(file, iov, count, &file->f_pos); |
| goto out; |
| } |
| |
| fn = (type == VERIFY_WRITE ? file->f_op->read : |
| (io_fn_t) file->f_op->write); |
| |
| ivp = iov; |
| while (count > 0) { |
| void * base; |
| int len, nr; |
| |
| base = ivp->iov_base; |
| len = ivp->iov_len; |
| ivp++; |
| count--; |
| nr = fn(file, base, len, &file->f_pos); |
| if (nr < 0) { |
| if (!retval) |
| retval = nr; |
| break; |
| } |
| retval += nr; |
| if (nr != len) |
| break; |
| } |
| out: |
| if (iov != iovstack) |
| kfree(iov); |
| out_nofree: |
| /* VERIFY_WRITE actually means a read, as we write to user space */ |
| if ((retval + (type == VERIFY_WRITE)) > 0) |
| dnotify_parent(file->f_dentry, |
| (type == VERIFY_WRITE) ? DN_ACCESS : DN_MODIFY); |
| |
| return retval; |
| } |
| |
| asmlinkage long sys32_readv(int fd, struct iovec32 *vector, u32 count) |
| { |
| struct file *file; |
| long ret = -EBADF; |
| |
| file = fget(fd); |
| if(!file) |
| goto bad_file; |
| |
| if (file->f_op && (file->f_mode & FMODE_READ) && |
| (file->f_op->readv || file->f_op->read)) |
| ret = do_readv_writev32(VERIFY_WRITE, file, vector, count); |
| fput(file); |
| |
| bad_file: |
| return ret; |
| } |
| |
| asmlinkage long sys32_writev(int fd, struct iovec32 *vector, u32 count) |
| { |
| struct file *file; |
| int ret = -EBADF; |
| |
| file = fget(fd); |
| if(!file) |
| goto bad_file; |
| if (file->f_op && (file->f_mode & FMODE_WRITE) && |
| (file->f_op->writev || file->f_op->write)) |
| ret = do_readv_writev32(VERIFY_READ, file, vector, count); |
| fput(file); |
| |
| bad_file: |
| return ret; |
| } |
| |
| /* readdir & getdents */ |
| |
| #define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de))) |
| #define ROUND_UP(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1)) |
| |
| struct old_linux_dirent32 { |
| u32 d_ino; |
| u32 d_offset; |
| unsigned short d_namlen; |
| char d_name[1]; |
| }; |
| |
| struct readdir_callback32 { |
| struct old_linux_dirent32 * dirent; |
| int count; |
| }; |
| |
| static int fillonedir(void * __buf, const char * name, int namlen, |
| loff_t offset, ino_t ino, unsigned int d_type) |
| { |
| struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf; |
| struct old_linux_dirent32 * dirent; |
| |
| if (buf->count) |
| return -EINVAL; |
| buf->count++; |
| dirent = buf->dirent; |
| put_user(ino, &dirent->d_ino); |
| put_user(offset, &dirent->d_offset); |
| put_user(namlen, &dirent->d_namlen); |
| copy_to_user(dirent->d_name, name, namlen); |
| put_user(0, dirent->d_name + namlen); |
| return 0; |
| } |
| |
| asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 *dirent, unsigned int count) |
| { |
| int error = -EBADF; |
| struct file * file; |
| struct readdir_callback32 buf; |
| |
| file = fget(fd); |
| if (!file) |
| goto out; |
| |
| buf.count = 0; |
| buf.dirent = dirent; |
| |
| error = vfs_readdir(file, fillonedir, &buf); |
| if (error < 0) |
| goto out_putf; |
| error = buf.count; |
| |
| out_putf: |
| fput(file); |
| out: |
| return error; |
| } |
| |
| struct linux_dirent32 { |
| u32 d_ino; |
| u32 d_off; |
| unsigned short d_reclen; |
| char d_name[1]; |
| }; |
| |
| struct getdents_callback32 { |
| struct linux_dirent32 * current_dir; |
| struct linux_dirent32 * previous; |
| int count; |
| int error; |
| }; |
| |
| static int filldir(void * __buf, const char * name, int namlen, loff_t offset, ino_t ino, |
| unsigned int d_type) |
| { |
| struct linux_dirent32 * dirent; |
| struct getdents_callback32 * buf = (struct getdents_callback32 *) __buf; |
| int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1); |
| |
| buf->error = -EINVAL; /* only used if we fail.. */ |
| if (reclen > buf->count) |
| return -EINVAL; |
| dirent = buf->previous; |
| if (dirent) |
| put_user(offset, &dirent->d_off); |
| dirent = buf->current_dir; |
| buf->previous = dirent; |
| put_user(ino, &dirent->d_ino); |
| put_user(reclen, &dirent->d_reclen); |
| copy_to_user(dirent->d_name, name, namlen); |
| put_user(0, dirent->d_name + namlen); |
| dirent = (void *) dirent + reclen; |
| buf->current_dir = dirent; |
| buf->count -= reclen; |
| return 0; |
| } |
| |
| asmlinkage int sys32_getdents(unsigned int fd, struct linux_dirent32 *dirent, unsigned int count) |
| { |
| struct file * file; |
| struct linux_dirent32 * lastdirent; |
| struct getdents_callback32 buf; |
| int error = -EBADF; |
| |
| file = fget(fd); |
| if (!file) |
| goto out; |
| |
| buf.current_dir = dirent; |
| buf.previous = NULL; |
| buf.count = count; |
| buf.error = 0; |
| |
| error = vfs_readdir(file, filldir, &buf); |
| if (error < 0) |
| goto out_putf; |
| lastdirent = buf.previous; |
| error = buf.error; |
| if(lastdirent) { |
| put_user(file->f_pos, &lastdirent->d_off); |
| error = count - buf.count; |
| } |
| out_putf: |
| fput(file); |
| out: |
| return error; |
| } |
| |
| /* end of readdir & getdents */ |
| |
| /* |
| * Ooo, nasty. We need here to frob 32-bit unsigned longs to |
| * 64-bit unsigned longs. |
| */ |
| |
| static inline int |
| get_fd_set32(unsigned long n, unsigned long *fdset, u32 *ufdset) |
| { |
| if (ufdset) { |
| unsigned long odd; |
| |
| if (verify_area(VERIFY_WRITE, ufdset, n*sizeof(u32))) |
| return -EFAULT; |
| |
| odd = n & 1UL; |
| n &= ~1UL; |
| while (n) { |
| unsigned long h, l; |
| __get_user(l, ufdset); |
| __get_user(h, ufdset+1); |
| ufdset += 2; |
| *fdset++ = h << 32 | l; |
| n -= 2; |
| } |
| if (odd) |
| __get_user(*fdset, ufdset); |
| } else { |
| /* Tricky, must clear full unsigned long in the |
| * kernel fdset at the end, this makes sure that |
| * actually happens. |
| */ |
| memset(fdset, 0, ((n + 1) & ~1)*sizeof(u32)); |
| } |
| return 0; |
| } |
| |
| static inline void |
| set_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset) |
| { |
| unsigned long odd; |
| |
| if (!ufdset) |
| return; |
| |
| odd = n & 1UL; |
| n &= ~1UL; |
| while (n) { |
| unsigned long h, l; |
| l = *fdset++; |
| h = l >> 32; |
| __put_user(l, ufdset); |
| __put_user(h, ufdset+1); |
| ufdset += 2; |
| n -= 2; |
| } |
| if (odd) |
| __put_user(*fdset, ufdset); |
| } |
| |
| #define MAX_SELECT_SECONDS \ |
| ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1) |
| |
| asmlinkage int sys32_select(int n, u32 *inp, u32 *outp, u32 *exp, u32 tvp_x) |
| { |
| fd_set_bits fds; |
| struct timeval32 *tvp = (struct timeval32 *)AA(tvp_x); |
| char *bits; |
| unsigned long nn; |
| long timeout; |
| int ret, size; |
| |
| timeout = MAX_SCHEDULE_TIMEOUT; |
| if (tvp) { |
| time_t sec, usec; |
| |
| if ((ret = verify_area(VERIFY_READ, tvp, sizeof(*tvp))) |
| || (ret = __get_user(sec, &tvp->tv_sec)) |
| || (ret = __get_user(usec, &tvp->tv_usec))) |
| goto out_nofds; |
| |
| ret = -EINVAL; |
| if(sec < 0 || usec < 0) |
| goto out_nofds; |
| |
| if ((unsigned long) sec < MAX_SELECT_SECONDS) { |
| timeout = (usec + 1000000/HZ - 1) / (1000000/HZ); |
| timeout += sec * (unsigned long) HZ; |
| } |
| } |
| |
| ret = -EINVAL; |
| if (n < 0) |
| goto out_nofds; |
| if (n > current->files->max_fdset) |
| n = current->files->max_fdset; |
| |
| /* |
| * We need 6 bitmaps (in/out/ex for both incoming and outgoing), |
| * since we used fdset we need to allocate memory in units of |
| * long-words. |
| */ |
| ret = -ENOMEM; |
| size = FDS_BYTES(n); |
| bits = kmalloc(6 * size, GFP_KERNEL); |
| if (!bits) |
| goto out_nofds; |
| fds.in = (unsigned long *) bits; |
| fds.out = (unsigned long *) (bits + size); |
| fds.ex = (unsigned long *) (bits + 2*size); |
| fds.res_in = (unsigned long *) (bits + 3*size); |
| fds.res_out = (unsigned long *) (bits + 4*size); |
| fds.res_ex = (unsigned long *) (bits + 5*size); |
| |
| nn = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32)); |
| if ((ret = get_fd_set32(nn, fds.in, inp)) || |
| (ret = get_fd_set32(nn, fds.out, outp)) || |
| (ret = get_fd_set32(nn, fds.ex, exp))) |
| goto out; |
| zero_fd_set(n, fds.res_in); |
| zero_fd_set(n, fds.res_out); |
| zero_fd_set(n, fds.res_ex); |
| |
| ret = do_select(n, &fds, &timeout); |
| |
| if (tvp && !(current->personality & STICKY_TIMEOUTS)) { |
| time_t sec = 0, usec = 0; |
| if (timeout) { |
| sec = timeout / HZ; |
| usec = timeout % HZ; |
| usec *= (1000000/HZ); |
| } |
| put_user(sec, &tvp->tv_sec); |
| put_user(usec, &tvp->tv_usec); |
| } |
| |
| if (ret < 0) |
| goto out; |
| if (!ret) { |
| ret = -ERESTARTNOHAND; |
| if (signal_pending(current)) |
| goto out; |
| ret = 0; |
| } |
| |
| set_fd_set32(nn, inp, fds.res_in); |
| set_fd_set32(nn, outp, fds.res_out); |
| set_fd_set32(nn, exp, fds.res_ex); |
| |
| out: |
| kfree(bits); |
| out_nofds: |
| return ret; |
| } |
| |
| static int cp_new_stat32(struct inode *inode, struct stat32 *statbuf) |
| { |
| unsigned long ino, blksize, blocks; |
| kdev_t dev, rdev; |
| umode_t mode; |
| nlink_t nlink; |
| uid_t uid; |
| gid_t gid; |
| off_t size; |
| time_t atime, mtime, ctime; |
| int err; |
| |
| /* Stream the loads of inode data into the load buffer, |
| * then we push it all into the store buffer below. This |
| * should give optimal cache performance. |
| */ |
| ino = inode->i_ino; |
| dev = inode->i_dev; |
| mode = inode->i_mode; |
| nlink = inode->i_nlink; |
| uid = inode->i_uid; |
| gid = inode->i_gid; |
| rdev = inode->i_rdev; |
| size = inode->i_size; |
| atime = inode->i_atime; |
| mtime = inode->i_mtime; |
| ctime = inode->i_ctime; |
| blksize = inode->i_blksize; |
| blocks = inode->i_blocks; |
| |
| err = put_user(kdev_t_to_nr(dev), &statbuf->st_dev); |
| err |= put_user(ino, &statbuf->st_ino); |
| err |= put_user(mode, &statbuf->st_mode); |
| err |= put_user(nlink, &statbuf->st_nlink); |
| err |= put_user(high2lowuid(uid), &statbuf->st_uid); |
| err |= put_user(high2lowgid(gid), &statbuf->st_gid); |
| err |= put_user(kdev_t_to_nr(rdev), &statbuf->st_rdev); |
| err |= put_user(size, &statbuf->st_size); |
| err |= put_user(atime, &statbuf->st_atime); |
| err |= put_user(0, &statbuf->__unused1); |
| err |= put_user(mtime, &statbuf->st_mtime); |
| err |= put_user(0, &statbuf->__unused2); |
| err |= put_user(ctime, &statbuf->st_ctime); |
| err |= put_user(0, &statbuf->__unused3); |
| if (blksize) { |
| err |= put_user(blksize, &statbuf->st_blksize); |
| err |= put_user(blocks, &statbuf->st_blocks); |
| } else { |
| unsigned int tmp_blocks; |
| |
| #define D_B 7 |
| #define I_B (BLOCK_SIZE / sizeof(unsigned short)) |
| tmp_blocks = (size + BLOCK_SIZE - 1) / BLOCK_SIZE; |
| if (tmp_blocks > D_B) { |
| unsigned int indirect; |
| |
| indirect = (tmp_blocks - D_B + I_B - 1) / I_B; |
| tmp_blocks += indirect; |
| if (indirect > 1) { |
| indirect = (indirect - 1 + I_B - 1) / I_B; |
| tmp_blocks += indirect; |
| if (indirect > 1) |
| tmp_blocks++; |
| } |
| } |
| err |= put_user(BLOCK_SIZE, &statbuf->st_blksize); |
| err |= put_user((BLOCK_SIZE / 512) * tmp_blocks, &statbuf->st_blocks); |
| #undef D_B |
| #undef I_B |
| } |
| err |= put_user(0, &statbuf->__unused4[0]); |
| err |= put_user(0, &statbuf->__unused4[1]); |
| |
| return err; |
| } |
| |
| /* Perhaps this belongs in fs.h or similar. -DaveM */ |
| static __inline__ int |
| do_revalidate(struct dentry *dentry) |
| { |
| struct inode * inode = dentry->d_inode; |
| if (inode->i_op && inode->i_op->revalidate) |
| return inode->i_op->revalidate(dentry); |
| return 0; |
| } |
| |
| asmlinkage int sys32_newstat(char * filename, struct stat32 *statbuf) |
| { |
| struct nameidata nd; |
| int error; |
| |
| error = user_path_walk(filename, &nd); |
| if (!error) { |
| error = do_revalidate(nd.dentry); |
| if (!error) |
| error = cp_new_stat32(nd.dentry->d_inode, statbuf); |
| path_release(&nd); |
| } |
| return error; |
| } |
| |
| asmlinkage int sys32_newlstat(char * filename, struct stat32 *statbuf) |
| { |
| struct nameidata nd; |
| int error; |
| |
| error = user_path_walk_link(filename, &nd); |
| if (!error) { |
| error = do_revalidate(nd.dentry); |
| if (!error) |
| error = cp_new_stat32(nd.dentry->d_inode, statbuf); |
| |
| path_release(&nd); |
| } |
| return error; |
| } |
| |
| asmlinkage int sys32_newfstat(unsigned int fd, struct stat32 *statbuf) |
| { |
| struct file *f; |
| int err = -EBADF; |
| |
| f = fget(fd); |
| if (f) { |
| struct dentry * dentry = f->f_dentry; |
| |
| err = do_revalidate(dentry); |
| if (!err) |
| err = cp_new_stat32(dentry->d_inode, statbuf); |
| fput(f); |
| } |
| return err; |
| } |
| |
| extern asmlinkage int sys_sysfs(int option, unsigned long arg1, unsigned long arg2); |
| |
| asmlinkage int sys32_sysfs(int option, u32 arg1, u32 arg2) |
| { |
| return sys_sysfs(option, arg1, arg2); |
| } |
| |
| struct ncp_mount_data32_v3 { |
| int version; |
| unsigned int ncp_fd; |
| __kernel_uid_t32 mounted_uid; |
| __kernel_pid_t32 wdog_pid; |
| unsigned char mounted_vol[NCP_VOLNAME_LEN + 1]; |
| unsigned int time_out; |
| unsigned int retry_count; |
| unsigned int flags; |
| __kernel_uid_t32 uid; |
| __kernel_gid_t32 gid; |
| __kernel_mode_t32 file_mode; |
| __kernel_mode_t32 dir_mode; |
| }; |
| |
| struct ncp_mount_data32_v4 { |
| int version; |
| /* all members below are "long" in ABI ... i.e. 32bit on sparc32, while 64bits on sparc64 */ |
| unsigned int flags; |
| unsigned int mounted_uid; |
| int wdog_pid; |
| |
| unsigned int ncp_fd; |
| unsigned int time_out; |
| unsigned int retry_count; |
| |
| unsigned int uid; |
| unsigned int gid; |
| unsigned int file_mode; |
| unsigned int dir_mode; |
| }; |
| |
| static void *do_ncp_super_data_conv(void *raw_data) |
| { |
| switch (*(int*)raw_data) { |
| case NCP_MOUNT_VERSION: |
| { |
| struct ncp_mount_data news, *n = &news; |
| struct ncp_mount_data32_v3 *n32 = (struct ncp_mount_data32_v3 *)raw_data; |
| |
| n->version = n32->version; |
| n->ncp_fd = n32->ncp_fd; |
| n->mounted_uid = low2highuid(n32->mounted_uid); |
| n->wdog_pid = n32->wdog_pid; |
| memmove (n->mounted_vol, n32->mounted_vol, sizeof (n32->mounted_vol)); |
| n->time_out = n32->time_out; |
| n->retry_count = n32->retry_count; |
| n->flags = n32->flags; |
| n->uid = low2highuid(n32->uid); |
| n->gid = low2highgid(n32->gid); |
| n->file_mode = n32->file_mode; |
| n->dir_mode = n32->dir_mode; |
| memcpy(raw_data, n, sizeof(*n)); |
| } |
| break; |
| case NCP_MOUNT_VERSION_V4: |
| { |
| struct ncp_mount_data_v4 news, *n = &news; |
| struct ncp_mount_data32_v4 *n32 = (struct ncp_mount_data32_v4 *)raw_data; |
| |
| n->version = n32->version; |
| n->flags = n32->flags; |
| n->mounted_uid = n32->mounted_uid; |
| n->wdog_pid = n32->wdog_pid; |
| n->ncp_fd = n32->ncp_fd; |
| n->time_out = n32->time_out; |
| n->retry_count = n32->retry_count; |
| n->uid = n32->uid; |
| n->gid = n32->gid; |
| n->file_mode = n32->file_mode; |
| n->dir_mode = n32->dir_mode; |
| memcpy(raw_data, n, sizeof(*n)); |
| } |
| break; |
| default: |
| /* do not touch unknown structures */ |
| break; |
| } |
| return raw_data; |
| } |
| |
| struct smb_mount_data32 { |
| int version; |
| __kernel_uid_t32 mounted_uid; |
| __kernel_uid_t32 uid; |
| __kernel_gid_t32 gid; |
| __kernel_mode_t32 file_mode; |
| __kernel_mode_t32 dir_mode; |
| }; |
| |
| static void *do_smb_super_data_conv(void *raw_data) |
| { |
| struct smb_mount_data news, *s = &news; |
| struct smb_mount_data32 *s32 = (struct smb_mount_data32 *)raw_data; |
| |
| s->version = s32->version; |
| s->mounted_uid = low2highuid(s32->mounted_uid); |
| s->uid = low2highuid(s32->uid); |
| s->gid = low2highgid(s32->gid); |
| s->file_mode = s32->file_mode; |
| s->dir_mode = s32->dir_mode; |
| memcpy(raw_data, s, sizeof(struct smb_mount_data)); |
| return raw_data; |
| } |
| |
| static int copy_mount_stuff_to_kernel(const void *user, unsigned long *kernel) |
| { |
| int i; |
| unsigned long page; |
| struct vm_area_struct *vma; |
| |
| *kernel = 0; |
| if(!user) |
| return 0; |
| vma = find_vma(current->mm, (unsigned long)user); |
| if(!vma || (unsigned long)user < vma->vm_start) |
| return -EFAULT; |
| if(!(vma->vm_flags & VM_READ)) |
| return -EFAULT; |
| i = vma->vm_end - (unsigned long) user; |
| if(PAGE_SIZE <= (unsigned long) i) |
| i = PAGE_SIZE - 1; |
| if(!(page = __get_free_page(GFP_KERNEL))) |
| return -ENOMEM; |
| if(copy_from_user((void *) page, user, i)) { |
| free_page(page); |
| return -EFAULT; |
| } |
| *kernel = page; |
| return 0; |
| } |
| |
| #define SMBFS_NAME "smbfs" |
| #define NCPFS_NAME "ncpfs" |
| |
| asmlinkage int sys32_mount(char *dev_name, char *dir_name, char *type, unsigned long new_flags, u32 data) |
| { |
| unsigned long type_page = 0; |
| unsigned long data_page = 0; |
| unsigned long dev_page = 0; |
| unsigned long dir_page = 0; |
| int err, is_smb, is_ncp; |
| |
| is_smb = is_ncp = 0; |
| |
| err = copy_mount_stuff_to_kernel((const void *)type, &type_page); |
| if (err) |
| goto out; |
| |
| if (type_page) { |
| is_smb = !strcmp((char *)type_page, SMBFS_NAME); |
| is_ncp = !strcmp((char *)type_page, NCPFS_NAME); |
| } else { |
| is_smb = is_ncp = 0; |
| } |
| |
| err = copy_mount_stuff_to_kernel((const void *)AA(data), &data_page); |
| if (err) |
| goto type_out; |
| |
| err = copy_mount_stuff_to_kernel(dev_name, &dev_page); |
| if (err) |
| goto data_out; |
| |
| err = copy_mount_stuff_to_kernel(dir_name, &dir_page); |
| if (err) |
| goto dev_out; |
| |
| if (!is_smb && !is_ncp) { |
| lock_kernel(); |
| err = do_mount((char*)dev_page, (char*)dir_page, |
| (char*)type_page, new_flags, (char*)data_page); |
| unlock_kernel(); |
| } else { |
| if (is_ncp) |
| do_ncp_super_data_conv((void *)data_page); |
| else |
| do_smb_super_data_conv((void *)data_page); |
| |
| lock_kernel(); |
| err = do_mount((char*)dev_page, (char*)dir_page, |
| (char*)type_page, new_flags, (char*)data_page); |
| unlock_kernel(); |
| } |
| free_page(dir_page); |
| |
| dev_out: |
| free_page(dev_page); |
| |
| data_out: |
| free_page(data_page); |
| |
| type_out: |
| free_page(type_page); |
| |
| out: |
| return err; |
| } |
| |
| struct rusage32 { |
| struct timeval32 ru_utime; |
| struct timeval32 ru_stime; |
| s32 ru_maxrss; |
| s32 ru_ixrss; |
| s32 ru_idrss; |
| s32 ru_isrss; |
| s32 ru_minflt; |
| s32 ru_majflt; |
| s32 ru_nswap; |
| s32 ru_inblock; |
| s32 ru_oublock; |
| s32 ru_msgsnd; |
| s32 ru_msgrcv; |
| s32 ru_nsignals; |
| s32 ru_nvcsw; |
| s32 ru_nivcsw; |
| }; |
| |
| static int put_rusage (struct rusage32 *ru, struct rusage *r) |
| { |
| int err; |
| |
| err = put_user (r->ru_utime.tv_sec, &ru->ru_utime.tv_sec); |
| err |= __put_user (r->ru_utime.tv_usec, &ru->ru_utime.tv_usec); |
| err |= __put_user (r->ru_stime.tv_sec, &ru->ru_stime.tv_sec); |
| err |= __put_user (r->ru_stime.tv_usec, &ru->ru_stime.tv_usec); |
| err |= __put_user (r->ru_maxrss, &ru->ru_maxrss); |
| err |= __put_user (r->ru_ixrss, &ru->ru_ixrss); |
| err |= __put_user (r->ru_idrss, &ru->ru_idrss); |
| err |= __put_user (r->ru_isrss, &ru->ru_isrss); |
| err |= __put_user (r->ru_minflt, &ru->ru_minflt); |
| err |= __put_user (r->ru_majflt, &ru->ru_majflt); |
| err |= __put_user (r->ru_nswap, &ru->ru_nswap); |
| err |= __put_user (r->ru_inblock, &ru->ru_inblock); |
| err |= __put_user (r->ru_oublock, &ru->ru_oublock); |
| err |= __put_user (r->ru_msgsnd, &ru->ru_msgsnd); |
| err |= __put_user (r->ru_msgrcv, &ru->ru_msgrcv); |
| err |= __put_user (r->ru_nsignals, &ru->ru_nsignals); |
| err |= __put_user (r->ru_nvcsw, &ru->ru_nvcsw); |
| err |= __put_user (r->ru_nivcsw, &ru->ru_nivcsw); |
| return err; |
| } |
| |
| asmlinkage int sys32_wait4(__kernel_pid_t32 pid, unsigned int *stat_addr, int options, struct rusage32 *ru) |
| { |
| if (!ru) |
| return sys_wait4(pid, stat_addr, options, NULL); |
| else { |
| struct rusage r; |
| int ret; |
| unsigned int status; |
| mm_segment_t old_fs = get_fs(); |
| |
| set_fs (KERNEL_DS); |
| ret = sys_wait4(pid, stat_addr ? &status : NULL, options, &r); |
| set_fs (old_fs); |
| if (put_rusage (ru, &r)) return -EFAULT; |
| if (stat_addr && put_user (status, stat_addr)) |
| return -EFAULT; |
| return ret; |
| } |
| } |
| |
| struct sysinfo32 { |
| s32 uptime; |
| u32 loads[3]; |
| u32 totalram; |
| u32 freeram; |
| u32 sharedram; |
| u32 bufferram; |
| u32 totalswap; |
| u32 freeswap; |
| unsigned short procs; |
| unsigned short pad; |
| u32 totalhigh; |
| u32 freehigh; |
| u32 mem_unit; |
| char _f[20-2*sizeof(int)-sizeof(int)]; |
| }; |
| |
| extern asmlinkage int sys_sysinfo(struct sysinfo *info); |
| |
| asmlinkage int sys32_sysinfo(struct sysinfo32 *info) |
| { |
| struct sysinfo s; |
| int ret, err; |
| int bitcount = 0; |
| mm_segment_t old_fs = get_fs (); |
| |
| set_fs(KERNEL_DS); |
| ret = sys_sysinfo(&s); |
| set_fs(old_fs); |
| /* Check to see if any memory value is too large for 32-bit and |
| * scale down if needed. |
| */ |
| if ((s.totalram >> 32) || (s.totalswap >> 32)) { |
| while (s.mem_unit < PAGE_SIZE) { |
| s.mem_unit <<= 1; |
| bitcount++; |
| } |
| s.totalram >>= bitcount; |
| s.freeram >>= bitcount; |
| s.sharedram >>= bitcount; |
| s.bufferram >>= bitcount; |
| s.totalswap >>= bitcount; |
| s.freeswap >>= bitcount; |
| s.totalhigh >>= bitcount; |
| s.freehigh >>= bitcount; |
| } |
| |
| err = put_user (s.uptime, &info->uptime); |
| err |= __put_user (s.loads[0], &info->loads[0]); |
| err |= __put_user (s.loads[1], &info->loads[1]); |
| err |= __put_user (s.loads[2], &info->loads[2]); |
| err |= __put_user (s.totalram, &info->totalram); |
| err |= __put_user (s.freeram, &info->freeram); |
| err |= __put_user (s.sharedram, &info->sharedram); |
| err |= __put_user (s.bufferram, &info->bufferram); |
| err |= __put_user (s.totalswap, &info->totalswap); |
| err |= __put_user (s.freeswap, &info->freeswap); |
| err |= __put_user (s.procs, &info->procs); |
| err |= __put_user (s.totalhigh, &info->totalhigh); |
| err |= __put_user (s.freehigh, &info->freehigh); |
| err |= __put_user (s.mem_unit, &info->mem_unit); |
| if (err) |
| return -EFAULT; |
| return ret; |
| } |
| |
| extern asmlinkage int sys_sched_rr_get_interval(pid_t pid, struct timespec *interval); |
| |
| asmlinkage int sys32_sched_rr_get_interval(__kernel_pid_t32 pid, struct timespec32 *interval) |
| { |
| struct timespec t; |
| int ret; |
| mm_segment_t old_fs = get_fs (); |
| |
| set_fs (KERNEL_DS); |
| ret = sys_sched_rr_get_interval(pid, &t); |
| set_fs (old_fs); |
| if (put_user (t.tv_sec, &interval->tv_sec) || |
| __put_user (t.tv_nsec, &interval->tv_nsec)) |
| return -EFAULT; |
| return ret; |
| } |
| |
| extern asmlinkage int sys_nanosleep(struct timespec *rqtp, struct timespec *rmtp); |
| |
| asmlinkage int sys32_nanosleep(struct timespec32 *rqtp, struct timespec32 *rmtp) |
| { |
| struct timespec t; |
| int ret; |
| mm_segment_t old_fs = get_fs (); |
| |
| if (get_user (t.tv_sec, &rqtp->tv_sec) || |
| __get_user (t.tv_nsec, &rqtp->tv_nsec)) |
| return -EFAULT; |
| set_fs (KERNEL_DS); |
| ret = sys_nanosleep(&t, rmtp ? &t : NULL); |
| set_fs (old_fs); |
| if (rmtp && ret == -EINTR) { |
| if (__put_user (t.tv_sec, &rmtp->tv_sec) || |
| __put_user (t.tv_nsec, &rmtp->tv_nsec)) |
| return -EFAULT; |
| } |
| return ret; |
| } |
| |
| extern asmlinkage int sys_sigprocmask(int how, old_sigset_t *set, old_sigset_t *oset); |
| |
| asmlinkage int sys32_sigprocmask(int how, old_sigset_t32 *set, old_sigset_t32 *oset) |
| { |
| old_sigset_t s; |
| int ret; |
| mm_segment_t old_fs = get_fs(); |
| |
| if (set && get_user (s, set)) return -EFAULT; |
| set_fs (KERNEL_DS); |
| ret = sys_sigprocmask(how, set ? &s : NULL, oset ? &s : NULL); |
| set_fs (old_fs); |
| if (ret) return ret; |
| if (oset && put_user (s, oset)) return -EFAULT; |
| return 0; |
| } |
| |
| extern asmlinkage int sys_rt_sigprocmask(int how, sigset_t *set, sigset_t *oset, size_t sigsetsize); |
| |
| asmlinkage int sys32_rt_sigprocmask(int how, sigset_t32 *set, sigset_t32 *oset, __kernel_size_t32 sigsetsize) |
| { |
| sigset_t s; |
| sigset_t32 s32; |
| int ret; |
| mm_segment_t old_fs = get_fs(); |
| |
| if (set) { |
| if (copy_from_user (&s32, set, sizeof(sigset_t32))) |
| return -EFAULT; |
| switch (_NSIG_WORDS) { |
| case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32); |
| case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32); |
| case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32); |
| case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); |
| } |
| } |
| set_fs (KERNEL_DS); |
| ret = sys_rt_sigprocmask(how, set ? &s : NULL, oset ? &s : NULL, sigsetsize); |
| set_fs (old_fs); |
| if (ret) return ret; |
| if (oset) { |
| switch (_NSIG_WORDS) { |
| case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; |
| case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; |
| case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; |
| case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; |
| } |
| if (copy_to_user (oset, &s32, sizeof(sigset_t32))) |
| return -EFAULT; |
| } |
| return 0; |
| } |
| |
| extern asmlinkage int sys_sigpending(old_sigset_t *set); |
| |
| asmlinkage int sys32_sigpending(old_sigset_t32 *set) |
| { |
| old_sigset_t s; |
| int ret; |
| mm_segment_t old_fs = get_fs(); |
| |
| set_fs (KERNEL_DS); |
| ret = sys_sigpending(&s); |
| set_fs (old_fs); |
| if (put_user (s, set)) return -EFAULT; |
| return ret; |
| } |
| |
| extern asmlinkage int sys_rt_sigpending(sigset_t *set, size_t sigsetsize); |
| |
| asmlinkage int sys32_rt_sigpending(sigset_t32 *set, __kernel_size_t32 sigsetsize) |
| { |
| sigset_t s; |
| sigset_t32 s32; |
| int ret; |
| mm_segment_t old_fs = get_fs(); |
| |
| set_fs (KERNEL_DS); |
| ret = sys_rt_sigpending(&s, sigsetsize); |
| set_fs (old_fs); |
| if (!ret) { |
| switch (_NSIG_WORDS) { |
| case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; |
| case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; |
| case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; |
| case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; |
| } |
| if (copy_to_user (set, &s32, sizeof(sigset_t32))) |
| return -EFAULT; |
| } |
| return ret; |
| } |
| |
| asmlinkage int |
| sys32_rt_sigtimedwait(sigset_t32 *uthese, siginfo_t32 *uinfo, |
| struct timespec32 *uts, __kernel_size_t32 sigsetsize) |
| { |
| int ret, sig; |
| sigset_t these; |
| sigset_t32 these32; |
| struct timespec ts; |
| siginfo_t info; |
| long timeout = 0; |
| |
| /* XXX: Don't preclude handling different sized sigset_t's. */ |
| if (sigsetsize != sizeof(sigset_t)) |
| return -EINVAL; |
| |
| if (copy_from_user (&these32, uthese, sizeof(sigset_t32))) |
| return -EFAULT; |
| |
| switch (_NSIG_WORDS) { |
| case 4: these.sig[3] = these32.sig[6] | (((long)these32.sig[7]) << 32); |
| case 3: these.sig[2] = these32.sig[4] | (((long)these32.sig[5]) << 32); |
| case 2: these.sig[1] = these32.sig[2] | (((long)these32.sig[3]) << 32); |
| case 1: these.sig[0] = these32.sig[0] | (((long)these32.sig[1]) << 32); |
| } |
| |
| /* |
| * Invert the set of allowed signals to get those we |
| * want to block. |
| */ |
| sigdelsetmask(&these, sigmask(SIGKILL)|sigmask(SIGSTOP)); |
| signotset(&these); |
| |
| if (uts) { |
| if (get_user (ts.tv_sec, &uts->tv_sec) || |
| get_user (ts.tv_nsec, &uts->tv_nsec)) |
| return -EINVAL; |
| if (ts.tv_nsec >= 1000000000L || ts.tv_nsec < 0 |
| || ts.tv_sec < 0) |
| return -EINVAL; |
| } |
| |
| spin_lock_irq(¤t->sigmask_lock); |
| sig = dequeue_signal(&these, &info); |
| if (!sig) { |
| timeout = MAX_SCHEDULE_TIMEOUT; |
| if (uts) |
| timeout = (timespec_to_jiffies(&ts) |
| + (ts.tv_sec || ts.tv_nsec)); |
| |
| if (timeout) { |
| /* None ready -- temporarily unblock those we're |
| * interested while we are sleeping in so that we'll |
| * be awakened when they arrive. */ |
| sigset_t oldblocked = current->blocked; |
| sigandsets(¤t->blocked, ¤t->blocked, &these); |
| recalc_sigpending(current); |
| spin_unlock_irq(¤t->sigmask_lock); |
| |
| current->state = TASK_INTERRUPTIBLE; |
| timeout = schedule_timeout(timeout); |
| |
| spin_lock_irq(¤t->sigmask_lock); |
| sig = dequeue_signal(&these, &info); |
| current->blocked = oldblocked; |
| recalc_sigpending(current); |
| } |
| } |
| spin_unlock_irq(¤t->sigmask_lock); |
| |
| if (sig) { |
| ret = sig; |
| if (uinfo) { |
| if (copy_siginfo_to_user32(uinfo, &info)) |
| ret = -EFAULT; |
| } |
| } else { |
| ret = -EAGAIN; |
| if (timeout) |
| ret = -EINTR; |
| } |
| |
| return ret; |
| } |
| |
| extern asmlinkage int |
| sys_rt_sigqueueinfo(int pid, int sig, siginfo_t *uinfo); |
| |
| asmlinkage int |
| sys32_rt_sigqueueinfo(int pid, int sig, siginfo_t32 *uinfo) |
| { |
| siginfo_t info; |
| int ret; |
| mm_segment_t old_fs = get_fs(); |
| |
| if (copy_from_user (&info, uinfo, 3*sizeof(int)) || |
| copy_from_user (info._sifields._pad, uinfo->_sifields._pad, SI_PAD_SIZE)) |
| return -EFAULT; |
| set_fs (KERNEL_DS); |
| ret = sys_rt_sigqueueinfo(pid, sig, &info); |
| set_fs (old_fs); |
| return ret; |
| } |
| |
| struct tms32 { |
| __kernel_clock_t32 tms_utime; |
| __kernel_clock_t32 tms_stime; |
| __kernel_clock_t32 tms_cutime; |
| __kernel_clock_t32 tms_cstime; |
| }; |
| |
| extern asmlinkage long sys_times(struct tms * tbuf); |
| |
| asmlinkage long sys32_times(struct tms32 *tbuf) |
| { |
| struct tms t; |
| long ret; |
| mm_segment_t old_fs = get_fs (); |
| int err; |
| |
| set_fs (KERNEL_DS); |
| ret = sys_times(tbuf ? &t : NULL); |
| set_fs (old_fs); |
| if (tbuf) { |
| err = put_user (t.tms_utime, &tbuf->tms_utime); |
| err |= __put_user (t.tms_stime, &tbuf->tms_stime); |
| err |= __put_user (t.tms_cutime, &tbuf->tms_cutime); |
| err |= __put_user (t.tms_cstime, &tbuf->tms_cstime); |
| if (err) |
| ret = -EFAULT; |
| } |
| return ret; |
| } |
| |
| #define RLIM_INFINITY32 0x7fffffff |
| #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x) |
| |
| struct rlimit32 { |
| u32 rlim_cur; |
| u32 rlim_max; |
| }; |
| |
| extern asmlinkage int sys_getrlimit(unsigned int resource, struct rlimit *rlim); |
| |
| asmlinkage int sys32_getrlimit(unsigned int resource, struct rlimit32 *rlim) |
| { |
| struct rlimit r; |
| int ret; |
| mm_segment_t old_fs = get_fs (); |
| |
| set_fs (KERNEL_DS); |
| ret = sys_getrlimit(resource, &r); |
| set_fs (old_fs); |
| if (!ret) { |
| ret = put_user (RESOURCE32(r.rlim_cur), &rlim->rlim_cur); |
| ret |= __put_user (RESOURCE32(r.rlim_max), &rlim->rlim_max); |
| } |
| return ret; |
| } |
| |
| extern asmlinkage int sys_setrlimit(unsigned int resource, struct rlimit *rlim); |
| |
| asmlinkage int sys32_setrlimit(unsigned int resource, struct rlimit32 *rlim) |
| { |
| struct rlimit r; |
| int ret; |
| mm_segment_t old_fs = get_fs (); |
| |
| if (resource >= RLIM_NLIMITS) return -EINVAL; |
| if (get_user (r.rlim_cur, &rlim->rlim_cur) || |
| __get_user (r.rlim_max, &rlim->rlim_max)) |
| return -EFAULT; |
| if (r.rlim_cur == RLIM_INFINITY32) |
| r.rlim_cur = RLIM_INFINITY; |
| if (r.rlim_max == RLIM_INFINITY32) |
| r.rlim_max = RLIM_INFINITY; |
| set_fs (KERNEL_DS); |
| ret = sys_setrlimit(resource, &r); |
| set_fs (old_fs); |
| return ret; |
| } |
| |
| extern asmlinkage int sys_getrusage(int who, struct rusage *ru); |
| |
| asmlinkage int sys32_getrusage(int who, struct rusage32 *ru) |
| { |
| struct rusage r; |
| int ret; |
| mm_segment_t old_fs = get_fs(); |
| |
| set_fs (KERNEL_DS); |
| ret = sys_getrusage(who, &r); |
| set_fs (old_fs); |
| if (put_rusage (ru, &r)) return -EFAULT; |
| return ret; |
| } |
| |
| /* XXX This really belongs in some header file... -DaveM */ |
| #define MAX_SOCK_ADDR 128 /* 108 for Unix domain - |
| 16 for IP, 16 for IPX, |
| 24 for IPv6, |
| about 80 for AX.25 */ |
| |
| extern struct socket *sockfd_lookup(int fd, int *err); |
| |
| /* XXX This as well... */ |
| extern __inline__ void sockfd_put(struct socket *sock) |
| { |
| fput(sock->file); |
| } |
| |
| struct msghdr32 { |
| u32 msg_name; |
| int msg_namelen; |
| u32 msg_iov; |
| __kernel_size_t32 msg_iovlen; |
| u32 msg_control; |
| __kernel_size_t32 msg_controllen; |
| unsigned msg_flags; |
| }; |
| |
| struct cmsghdr32 { |
| __kernel_size_t32 cmsg_len; |
| int cmsg_level; |
| int cmsg_type; |
| }; |
| |
| /* Bleech... */ |
| #define __CMSG32_NXTHDR(ctl, len, cmsg, cmsglen) __cmsg32_nxthdr((ctl),(len),(cmsg),(cmsglen)) |
| #define CMSG32_NXTHDR(mhdr, cmsg, cmsglen) cmsg32_nxthdr((mhdr), (cmsg), (cmsglen)) |
| |
| #define CMSG32_ALIGN(len) ( ((len)+sizeof(int)-1) & ~(sizeof(int)-1) ) |
| |
| #define CMSG32_DATA(cmsg) ((void *)((char *)(cmsg) + CMSG32_ALIGN(sizeof(struct cmsghdr32)))) |
| #define CMSG32_SPACE(len) (CMSG32_ALIGN(sizeof(struct cmsghdr32)) + CMSG32_ALIGN(len)) |
| #define CMSG32_LEN(len) (CMSG32_ALIGN(sizeof(struct cmsghdr32)) + (len)) |
| |
| #define __CMSG32_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr32) ? \ |
| (struct cmsghdr32 *)(ctl) : \ |
| (struct cmsghdr32 *)NULL) |
| #define CMSG32_FIRSTHDR(msg) __CMSG32_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen) |
| #define CMSG32_OK(ucmlen, ucmsg, mhdr) \ |
| ((ucmlen) >= sizeof(struct cmsghdr32) && \ |
| (ucmlen) <= (unsigned long) \ |
| ((mhdr)->msg_controllen - \ |
| ((char *)(ucmsg) - (char *)(mhdr)->msg_control))) |
| |
| __inline__ struct cmsghdr32 *__cmsg32_nxthdr(void *__ctl, __kernel_size_t __size, |
| struct cmsghdr32 *__cmsg, int __cmsg_len) |
| { |
| struct cmsghdr32 * __ptr; |
| |
| __ptr = (struct cmsghdr32 *)(((unsigned char *) __cmsg) + |
| CMSG32_ALIGN(__cmsg_len)); |
| if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size) |
| return NULL; |
| |
| return __ptr; |
| } |
| |
| __inline__ struct cmsghdr32 *cmsg32_nxthdr (struct msghdr *__msg, |
| struct cmsghdr32 *__cmsg, |
| int __cmsg_len) |
| { |
| return __cmsg32_nxthdr(__msg->msg_control, __msg->msg_controllen, |
| __cmsg, __cmsg_len); |
| } |
| |
| static inline int iov_from_user32_to_kern(struct iovec *kiov, |
| struct iovec32 *uiov32, |
| int niov) |
| { |
| int tot_len = 0; |
| |
| while(niov > 0) { |
| u32 len, buf; |
| |
| if(get_user(len, &uiov32->iov_len) || |
| get_user(buf, &uiov32->iov_base)) { |
| tot_len = -EFAULT; |
| break; |
| } |
| tot_len += len; |
| kiov->iov_base = (void *)A(buf); |
| kiov->iov_len = (__kernel_size_t) len; |
| uiov32++; |
| kiov++; |
| niov--; |
| } |
| return tot_len; |
| } |
| |
| static inline int msghdr_from_user32_to_kern(struct msghdr *kmsg, |
| struct msghdr32 *umsg) |
| { |
| u32 tmp1, tmp2, tmp3; |
| int err; |
| |
| err = get_user(tmp1, &umsg->msg_name); |
| err |= __get_user(tmp2, &umsg->msg_iov); |
| err |= __get_user(tmp3, &umsg->msg_control); |
| if (err) |
| return -EFAULT; |
| |
| kmsg->msg_name = (void *)A(tmp1); |
| kmsg->msg_iov = (struct iovec *)A(tmp2); |
| kmsg->msg_control = (void *)A(tmp3); |
| |
| err = get_user(kmsg->msg_namelen, &umsg->msg_namelen); |
| err |= get_user(kmsg->msg_iovlen, &umsg->msg_iovlen); |
| err |= get_user(kmsg->msg_controllen, &umsg->msg_controllen); |
| err |= get_user(kmsg->msg_flags, &umsg->msg_flags); |
| |
| return err; |
| } |
| |
| /* I've named the args so it is easy to tell whose space the pointers are in. */ |
| static int verify_iovec32(struct msghdr *kern_msg, struct iovec *kern_iov, |
| char *kern_address, int mode) |
| { |
| int tot_len; |
| |
| if(kern_msg->msg_namelen) { |
| if(mode==VERIFY_READ) { |
| int err = move_addr_to_kernel(kern_msg->msg_name, |
| kern_msg->msg_namelen, |
| kern_address); |
| if(err < 0) |
| return err; |
| } |
| kern_msg->msg_name = kern_address; |
| } else |
| kern_msg->msg_name = NULL; |
| |
| if(kern_msg->msg_iovlen > UIO_FASTIOV) { |
| kern_iov = kmalloc(kern_msg->msg_iovlen * sizeof(struct iovec), |
| GFP_KERNEL); |
| if(!kern_iov) |
| return -ENOMEM; |
| } |
| |
| tot_len = iov_from_user32_to_kern(kern_iov, |
| (struct iovec32 *)kern_msg->msg_iov, |
| kern_msg->msg_iovlen); |
| if(tot_len >= 0) |
| kern_msg->msg_iov = kern_iov; |
| else if(kern_msg->msg_iovlen > UIO_FASTIOV) |
| kfree(kern_iov); |
| |
| return tot_len; |
| } |
| |
| /* There is a lot of hair here because the alignment rules (and |
| * thus placement) of cmsg headers and length are different for |
| * 32-bit apps. -DaveM |
| */ |
| static int cmsghdr_from_user32_to_kern(struct msghdr *kmsg, |
| unsigned char *stackbuf, int stackbuf_size) |
| { |
| struct cmsghdr32 *ucmsg; |
| struct cmsghdr *kcmsg, *kcmsg_base; |
| __kernel_size_t32 ucmlen; |
| __kernel_size_t kcmlen, tmp; |
| int err = -EFAULT; |
| |
| kcmlen = 0; |
| kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf; |
| ucmsg = CMSG32_FIRSTHDR(kmsg); |
| while(ucmsg != NULL) { |
| if (get_user(ucmlen, &ucmsg->cmsg_len)) |
| return -EFAULT; |
| |
| /* Catch bogons. */ |
| if (!CMSG32_OK(ucmlen, ucmsg, kmsg)) |
| return -EINVAL; |
| |
| tmp = ((ucmlen - CMSG32_ALIGN(sizeof(*ucmsg))) + |
| CMSG_ALIGN(sizeof(struct cmsghdr))); |
| tmp = CMSG_ALIGN(tmp); |
| kcmlen += tmp; |
| ucmsg = CMSG32_NXTHDR(kmsg, ucmsg, ucmlen); |
| } |
| if(kcmlen == 0) |
| return -EINVAL; |
| |
| /* The kcmlen holds the 64-bit version of the control length. |
| * It may not be modified as we do not stick it into the kmsg |
| * until we have successfully copied over all of the data |
| * from the user. |
| */ |
| if(kcmlen > stackbuf_size) |
| kcmsg_base = kcmsg = kmalloc(kcmlen, GFP_KERNEL); |
| if(kcmsg == NULL) |
| return -ENOBUFS; |
| |
| /* Now copy them over neatly. */ |
| memset(kcmsg, 0, kcmlen); |
| ucmsg = CMSG32_FIRSTHDR(kmsg); |
| while(ucmsg != NULL) { |
| if (__get_user(ucmlen, &ucmsg->cmsg_len)) |
| goto Efault; |
| tmp = ((ucmlen - CMSG32_ALIGN(sizeof(*ucmsg))) + |
| CMSG_ALIGN(sizeof(struct cmsghdr))); |
| if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp)) |
| goto Einval; |
| kcmsg->cmsg_len = tmp; |
| tmp = CMSG_ALIGN(tmp); |
| if (__get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level) || |
| __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type) || |
| copy_from_user(CMSG_DATA(kcmsg), |
| CMSG32_DATA(ucmsg), |
| (ucmlen - CMSG32_ALIGN(sizeof(*ucmsg))))) |
| goto Efault; |
| |
| /* Advance. */ |
| kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp); |
| ucmsg = CMSG32_NXTHDR(kmsg, ucmsg, ucmlen); |
| } |
| |
| /* Ok, looks like we made it. Hook it up and return success. */ |
| kmsg->msg_control = kcmsg_base; |
| kmsg->msg_controllen = kcmlen; |
| return 0; |
| |
| Einval: |
| err = -EINVAL; |
| Efault: |
| if (kcmsg_base != (struct cmsghdr *)stackbuf) |
| kfree(kcmsg_base); |
| return err; |
| } |
| |
| static void put_cmsg32(struct msghdr *kmsg, int level, int type, |
| int len, void *data) |
| { |
| struct cmsghdr32 *cm = (struct cmsghdr32 *) kmsg->msg_control; |
| struct cmsghdr32 cmhdr; |
| int cmlen = CMSG32_LEN(len); |
| |
| if(cm == NULL || kmsg->msg_controllen < sizeof(*cm)) { |
| kmsg->msg_flags |= MSG_CTRUNC; |
| return; |
| } |
| |
| if(kmsg->msg_controllen < cmlen) { |
| kmsg->msg_flags |= MSG_CTRUNC; |
| cmlen = kmsg->msg_controllen; |
| } |
| cmhdr.cmsg_level = level; |
| cmhdr.cmsg_type = type; |
| cmhdr.cmsg_len = cmlen; |
| |
| if(copy_to_user(cm, &cmhdr, sizeof cmhdr)) |
| return; |
| if(copy_to_user(CMSG32_DATA(cm), data, cmlen - sizeof(struct cmsghdr32))) |
| return; |
| cmlen = CMSG32_SPACE(len); |
| kmsg->msg_control += cmlen; |
| kmsg->msg_controllen -= cmlen; |
| } |
| |
| static void scm_detach_fds32(struct msghdr *kmsg, struct scm_cookie *scm) |
| { |
| struct cmsghdr32 *cm = (struct cmsghdr32 *) kmsg->msg_control; |
| int fdmax = (kmsg->msg_controllen - sizeof(struct cmsghdr32)) / sizeof(int); |
| int fdnum = scm->fp->count; |
| struct file **fp = scm->fp->fp; |
| int *cmfptr; |
| int err = 0, i; |
| |
| if (fdnum < fdmax) |
| fdmax = fdnum; |
| |
| for (i = 0, cmfptr = (int *) CMSG32_DATA(cm); i < fdmax; i++, cmfptr++) { |
| int new_fd; |
| err = get_unused_fd(); |
| if (err < 0) |
| break; |
| new_fd = err; |
| err = put_user(new_fd, cmfptr); |
| if (err) { |
| put_unused_fd(new_fd); |
| break; |
| } |
| /* Bump the usage count and install the file. */ |
| get_file(fp[i]); |
| fd_install(new_fd, fp[i]); |
| } |
| |
| if (i > 0) { |
| int cmlen = CMSG32_LEN(i * sizeof(int)); |
| if (!err) |
| err = put_user(SOL_SOCKET, &cm->cmsg_level); |
| if (!err) |
| err = put_user(SCM_RIGHTS, &cm->cmsg_type); |
| if (!err) |
| err = put_user(cmlen, &cm->cmsg_len); |
| if (!err) { |
| cmlen = CMSG32_SPACE(i * sizeof(int)); |
| kmsg->msg_control += cmlen; |
| kmsg->msg_controllen -= cmlen; |
| } |
| } |
| if (i < fdnum) |
| kmsg->msg_flags |= MSG_CTRUNC; |
| |
| /* |
| * All of the files that fit in the message have had their |
| * usage counts incremented, so we just free the list. |
| */ |
| __scm_destroy(scm); |
| } |
| |
| /* In these cases we (currently) can just copy to data over verbatim |
| * because all CMSGs created by the kernel have well defined types which |
| * have the same layout in both the 32-bit and 64-bit API. One must add |
| * some special cased conversions here if we start sending control messages |
| * with incompatible types. |
| * |
| * SCM_RIGHTS and SCM_CREDENTIALS are done by hand in recvmsg32 right after |
| * we do our work. The remaining cases are: |
| * |
| * SOL_IP IP_PKTINFO struct in_pktinfo 32-bit clean |
| * IP_TTL int 32-bit clean |
| * IP_TOS __u8 32-bit clean |
| * IP_RECVOPTS variable length 32-bit clean |
| * IP_RETOPTS variable length 32-bit clean |
| * (these last two are clean because the types are defined |
| * by the IPv4 protocol) |
| * IP_RECVERR struct sock_extended_err + |
| * struct sockaddr_in 32-bit clean |
| * SOL_IPV6 IPV6_RECVERR struct sock_extended_err + |
| * struct sockaddr_in6 32-bit clean |
| * IPV6_PKTINFO struct in6_pktinfo 32-bit clean |
| * IPV6_HOPLIMIT int 32-bit clean |
| * IPV6_FLOWINFO u32 32-bit clean |
| * IPV6_HOPOPTS ipv6 hop exthdr 32-bit clean |
| * IPV6_DSTOPTS ipv6 dst exthdr(s) 32-bit clean |
| * IPV6_RTHDR ipv6 routing exthdr 32-bit clean |
| * IPV6_AUTHHDR ipv6 auth exthdr 32-bit clean |
| */ |
| static void cmsg32_recvmsg_fixup(struct msghdr *kmsg, |
| unsigned long orig_cmsg_uptr, __kernel_size_t orig_cmsg_len) |
| { |
| unsigned char *workbuf, *wp; |
| unsigned long bufsz, space_avail; |
| struct cmsghdr *ucmsg; |
| |
| bufsz = ((unsigned long)kmsg->msg_control) - orig_cmsg_uptr; |
| space_avail = kmsg->msg_controllen + bufsz; |
| wp = workbuf = kmalloc(bufsz, GFP_KERNEL); |
| if(workbuf == NULL) |
| goto fail; |
| |
| /* To make this more sane we assume the kernel sends back properly |
| * formatted control messages. Because of how the kernel will truncate |
| * the cmsg_len for MSG_TRUNC cases, we need not check that case either. |
| */ |
| ucmsg = (struct cmsghdr *) orig_cmsg_uptr; |
| while(((unsigned long)ucmsg) <= |
| (((unsigned long)kmsg->msg_control) - sizeof(struct cmsghdr))) { |
| struct cmsghdr32 *kcmsg32 = (struct cmsghdr32 *) wp; |
| int clen64, clen32; |
| |
| /* UCMSG is the 64-bit format CMSG entry in user-space. |
| * KCMSG32 is within the kernel space temporary buffer |
| * we use to convert into a 32-bit style CMSG. |
| */ |
| __get_user(kcmsg32->cmsg_len, &ucmsg->cmsg_len); |
| __get_user(kcmsg32->cmsg_level, &ucmsg->cmsg_level); |
| __get_user(kcmsg32->cmsg_type, &ucmsg->cmsg_type); |
| |
| clen64 = kcmsg32->cmsg_len; |
| if ((clen64 < CMSG_ALIGN(sizeof(*ucmsg))) || |
| (clen64 > (orig_cmsg_len + wp - workbuf))) |
| break; |
| if (kcmsg32->cmsg_level == SOL_SOCKET && |
| kcmsg32->cmsg_type == SO_TIMESTAMP) { |
| struct timeval tv; |
| struct timeval32 *tv32; |
| |
| if (clen64 != CMSG_LEN(sizeof(struct timeval))) { |
| kfree(workbuf); |
| goto fail; |
| } |
| |
| copy_from_user(&tv, CMSG_DATA(ucmsg), sizeof(tv)); |
| tv32 = (struct timeval32 *)CMSG32_DATA(kcmsg32); |
| tv32->tv_sec = tv.tv_sec; |
| tv32->tv_usec = tv.tv_usec; |
| clen32 = sizeof(*tv32) + |
| CMSG32_ALIGN(sizeof(struct cmsghdr32)); |
| } else { |
| copy_from_user(CMSG32_DATA(kcmsg32), CMSG_DATA(ucmsg), |
| clen64 - CMSG_ALIGN(sizeof(*ucmsg))); |
| clen32 = ((clen64 - CMSG_ALIGN(sizeof(*ucmsg))) + |
| CMSG32_ALIGN(sizeof(struct cmsghdr32))); |
| } |
| kcmsg32->cmsg_len = clen32; |
| |
| ucmsg = (struct cmsghdr *) (((char *)ucmsg) + CMSG_ALIGN(clen64)); |
| wp = (((char *)kcmsg32) + CMSG32_ALIGN(clen32)); |
| } |
| |
| /* Copy back fixed up data, and adjust pointers. */ |
| bufsz = (wp - workbuf); |
| copy_to_user((void *)orig_cmsg_uptr, workbuf, bufsz); |
| |
| kmsg->msg_control = (struct cmsghdr *) |
| (((char *)orig_cmsg_uptr) + bufsz); |
| kmsg->msg_controllen = space_avail - bufsz; |
| |
| kfree(workbuf); |
| return; |
| |
| fail: |
| /* If we leave the 64-bit format CMSG chunks in there, |
| * the application could get confused and crash. So to |
| * ensure greater recovery, we report no CMSGs. |
| */ |
| kmsg->msg_controllen += bufsz; |
| kmsg->msg_control = (void *) orig_cmsg_uptr; |
| } |
| |
| asmlinkage int sys32_sendmsg(int fd, struct msghdr32 *user_msg, unsigned user_flags) |
| { |
| struct socket *sock; |
| char address[MAX_SOCK_ADDR]; |
| struct iovec iov[UIO_FASTIOV]; |
| unsigned char ctl[sizeof(struct cmsghdr) + 20]; |
| unsigned char *ctl_buf = ctl; |
| struct msghdr kern_msg; |
| int err, total_len; |
| |
| if(msghdr_from_user32_to_kern(&kern_msg, user_msg)) |
| return -EFAULT; |
| if(kern_msg.msg_iovlen > UIO_MAXIOV) |
| return -EINVAL; |
| err = verify_iovec32(&kern_msg, iov, address, VERIFY_READ); |
| if (err < 0) |
| goto out; |
| total_len = err; |
| |
| if(kern_msg.msg_controllen) { |
| err = cmsghdr_from_user32_to_kern(&kern_msg, ctl, sizeof(ctl)); |
| if(err) |
| goto out_freeiov; |
| ctl_buf = kern_msg.msg_control; |
| } |
| kern_msg.msg_flags = user_flags; |
| |
| sock = sockfd_lookup(fd, &err); |
| if (sock != NULL) { |
| if (sock->file->f_flags & O_NONBLOCK) |
| kern_msg.msg_flags |= MSG_DONTWAIT; |
| err = sock_sendmsg(sock, &kern_msg, total_len); |
| sockfd_put(sock); |
| } |
| |
| /* N.B. Use kfree here, as kern_msg.msg_controllen might change? */ |
| if(ctl_buf != ctl) |
| kfree(ctl_buf); |
| out_freeiov: |
| if(kern_msg.msg_iov != iov) |
| kfree(kern_msg.msg_iov); |
| out: |
| return err; |
| } |
| |
| asmlinkage int sys32_recvmsg(int fd, struct msghdr32 *user_msg, unsigned int user_flags) |
| { |
| struct iovec iovstack[UIO_FASTIOV]; |
| struct msghdr kern_msg; |
| char addr[MAX_SOCK_ADDR]; |
| struct socket *sock; |
| struct iovec *iov = iovstack; |
| struct sockaddr *uaddr; |
| int *uaddr_len; |
| unsigned long cmsg_ptr; |
| __kernel_size_t cmsg_len; |
| int err, total_len, len = 0; |
| |
| if(msghdr_from_user32_to_kern(&kern_msg, user_msg)) |
| return -EFAULT; |
| if(kern_msg.msg_iovlen > UIO_MAXIOV) |
| return -EINVAL; |
| |
| uaddr = kern_msg.msg_name; |
| uaddr_len = &user_msg->msg_namelen; |
| err = verify_iovec32(&kern_msg, iov, addr, VERIFY_WRITE); |
| if (err < 0) |
| goto out; |
| total_len = err; |
| |
| cmsg_ptr = (unsigned long) kern_msg.msg_control; |
| cmsg_len = kern_msg.msg_controllen; |
| kern_msg.msg_flags = 0; |
| |
| sock = sockfd_lookup(fd, &err); |
| if (sock != NULL) { |
| struct scm_cookie scm; |
| |
| if (sock->file->f_flags & O_NONBLOCK) |
| user_flags |= MSG_DONTWAIT; |
| memset(&scm, 0, sizeof(scm)); |
| err = sock->ops->recvmsg(sock, &kern_msg, total_len, |
| user_flags, &scm); |
| if(err >= 0) { |
| len = err; |
| if(!kern_msg.msg_control) { |
| if(sock->passcred || scm.fp) |
| kern_msg.msg_flags |= MSG_CTRUNC; |
| if(scm.fp) |
| __scm_destroy(&scm); |
| } else { |
| /* If recvmsg processing itself placed some |
| * control messages into user space, it's is |
| * using 64-bit CMSG processing, so we need |
| * to fix it up before we tack on more stuff. |
| */ |
| if((unsigned long) kern_msg.msg_control != cmsg_ptr) |
| cmsg32_recvmsg_fixup(&kern_msg, |
| cmsg_ptr, cmsg_len); |
| |
| /* Wheee... */ |
| if(sock->passcred) |
| put_cmsg32(&kern_msg, |
| SOL_SOCKET, SCM_CREDENTIALS, |
| sizeof(scm.creds), &scm.creds); |
| if(scm.fp != NULL) |
| scm_detach_fds32(&kern_msg, &scm); |
| } |
| } |
| sockfd_put(sock); |
| } |
| |
| if(uaddr != NULL && err >= 0) |
| err = move_addr_to_user(addr, kern_msg.msg_namelen, uaddr, uaddr_len); |
| if(cmsg_ptr != 0 && err >= 0) { |
| unsigned long ucmsg_ptr = ((unsigned long)kern_msg.msg_control); |
| __kernel_size_t32 uclen = (__kernel_size_t32) (ucmsg_ptr - cmsg_ptr); |
| err |= __put_user(uclen, &user_msg->msg_controllen); |
| } |
| if(err >= 0) |
| err = __put_user(kern_msg.msg_flags, &user_msg->msg_flags); |
| if(kern_msg.msg_iov != iov) |
| kfree(kern_msg.msg_iov); |
| out: |
| if(err < 0) |
| return err; |
| return len; |
| } |
| |
| extern asmlinkage int sys_setsockopt(int fd, int level, int optname, |
| char *optval, int optlen); |
| |
| static int do_netfilter_replace(int fd, int level, int optname, |
| char *optval, int optlen) |
| { |
| struct ipt_replace32 { |
| char name[IPT_TABLE_MAXNAMELEN]; |
| __u32 valid_hooks; |
| __u32 num_entries; |
| __u32 size; |
| __u32 hook_entry[NF_IP_NUMHOOKS]; |
| __u32 underflow[NF_IP_NUMHOOKS]; |
| __u32 num_counters; |
| __u32 counters; |
| struct ipt_entry entries[0]; |
| } *repl32 = (struct ipt_replace32 *)optval; |
| struct ipt_replace *krepl; |
| struct ipt_counters *counters32; |
| __u32 origsize; |
| unsigned int kreplsize, kcountersize; |
| mm_segment_t old_fs; |
| int ret; |
| |
| if (optlen < sizeof(repl32)) |
| return -EINVAL; |
| |
| if (copy_from_user(&origsize, |
| &repl32->size, |
| sizeof(origsize))) |
| return -EFAULT; |
| |
| kreplsize = sizeof(*krepl) + origsize; |
| kcountersize = krepl->num_counters * sizeof(struct ipt_counters); |
| |
| /* Hack: Causes ipchains to give correct error msg --RR */ |
| if (optlen != kreplsize) |
| return -ENOPROTOOPT; |
| |
| krepl = (struct ipt_replace *)vmalloc(kreplsize); |
| if (krepl == NULL) |
| return -ENOMEM; |
| |
| if (copy_from_user(krepl, optval, kreplsize)) { |
| vfree(krepl); |
| return -EFAULT; |
| } |
| |
| counters32 = (struct ipt_counters *)AA( |
| ((struct ipt_replace32 *)krepl)->counters); |
| |
| kcountersize = krepl->num_counters * sizeof(struct ipt_counters); |
| krepl->counters = (struct ipt_counters *)vmalloc(kcountersize); |
| if (krepl->counters == NULL) { |
| vfree(krepl); |
| return -ENOMEM; |
| } |
| |
| old_fs = get_fs(); |
| set_fs(KERNEL_DS); |
| ret = sys_setsockopt(fd, level, optname, |
| (char *)krepl, kreplsize); |
| set_fs(old_fs); |
| |
| if (ret == 0 && |
| copy_to_user(counters32, krepl->counters, kcountersize)) |
| ret = -EFAULT; |
| |
| vfree(krepl->counters); |
| vfree(krepl); |
| |
| return ret; |
| } |
| |
| static int do_set_attach_filter(int fd, int level, int optname, |
| char *optval, int optlen) |
| { |
| struct sock_fprog32 { |
| __u16 len; |
| __u32 filter; |
| } *fprog32 = (struct sock_fprog32 *)optval; |
| struct sock_fprog kfprog; |
| struct sock_filter *kfilter; |
| unsigned int fsize; |
| mm_segment_t old_fs; |
| __u32 uptr; |
| int ret; |
| |
| if (get_user(kfprog.len, &fprog32->len) || |
| __get_user(uptr, &fprog32->filter)) |
| return -EFAULT; |
| |
| kfprog.filter = (struct sock_filter *)A(uptr); |
| fsize = kfprog.len * sizeof(struct sock_filter); |
| |
| kfilter = (struct sock_filter *)kmalloc(fsize, GFP_KERNEL); |
| if (kfilter == NULL) |
| return -ENOMEM; |
| |
| if (copy_from_user(kfilter, kfprog.filter, fsize)) { |
| kfree(kfilter); |
| return -EFAULT; |
| } |
| |
| kfprog.filter = kfilter; |
| |
| old_fs = get_fs(); |
| set_fs(KERNEL_DS); |
| ret = sys_setsockopt(fd, level, optname, |
| (char *)&kfprog, sizeof(kfprog)); |
| set_fs(old_fs); |
| |
| kfree(kfilter); |
| |
| return ret; |
| } |
| |
| static int do_set_sock_timeout(int fd, int level, int optname, char *optval, int optlen) |
| { |
| struct timeval32 *up = (struct timeval32 *) optval; |
| struct timeval ktime; |
| mm_segment_t old_fs; |
| int err; |
| |
| if (optlen < sizeof(*up)) |
| return -EINVAL; |
| if (get_user(ktime.tv_sec, &up->tv_sec) || |
| __get_user(ktime.tv_usec, &up->tv_usec)) |
| return -EFAULT; |
| old_fs = get_fs(); |
| set_fs(KERNEL_DS); |
| err = sys_setsockopt(fd, level, optname, (char *) &ktime, sizeof(ktime)); |
| set_fs(old_fs); |
| |
| return err; |
| } |
| |
| asmlinkage int sys32_setsockopt(int fd, int level, int optname, |
| char *optval, int optlen) |
| { |
| if (optname == IPT_SO_SET_REPLACE) |
| return do_netfilter_replace(fd, level, optname, |
| optval, optlen); |
| if (level == SOL_SOCKET && optname == SO_ATTACH_FILTER) |
| return do_set_attach_filter(fd, level, optname, |
| optval, optlen); |
| if (level == SOL_SOCKET && |
| (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)) |
| return do_set_sock_timeout(fd, level, optname, optval, optlen); |
| |
| return sys_setsockopt(fd, level, optname, optval, optlen); |
| } |
| |
| extern asmlinkage long sys_getsockopt(int fd, int level, int optname, |
| char *optval, int *optlen); |
| |
| static int do_get_sock_timeout(int fd, int level, int optname, char *optval, int *optlen) |
| { |
| struct timeval32 *up = (struct timeval32 *) optval; |
| struct timeval ktime; |
| mm_segment_t old_fs; |
| int len, err; |
| |
| if (get_user(len, optlen)) |
| return -EFAULT; |
| if (len < sizeof(*up)) |
| return -EINVAL; |
| len = sizeof(ktime); |
| old_fs = get_fs(); |
| set_fs(KERNEL_DS); |
| err = sys_getsockopt(fd, level, optname, (char *) &ktime, &len); |
| set_fs(old_fs); |
| |
| if (!err) { |
| if (put_user(sizeof(*up), optlen) || |
| put_user(ktime.tv_sec, &up->tv_sec) || |
| __put_user(ktime.tv_usec, &up->tv_usec)) |
| err = -EFAULT; |
| } |
| return err; |
| } |
| |
| asmlinkage int sys32_getsockopt(int fd, int level, int optname, |
| char *optval, int *optlen) |
| { |
| if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO) |
| return do_get_sock_timeout(fd, level, optname, optval, optlen); |
| return sys_getsockopt(fd, level, optname, optval, optlen); |
| } |
| |
| extern void check_pending(int signum); |
| |
| asmlinkage int sys32_sigaction (int sig, struct old_sigaction32 *act, struct old_sigaction32 *oact) |
| { |
| struct k_sigaction new_ka, old_ka; |
| int ret; |
| |
| if(sig < 0) { |
| current->thread.flags |= SPARC_FLAG_NEWSIGNALS; |
| sig = -sig; |
| } |
| |
| if (act) { |
| old_sigset_t32 mask; |
| u32 u_handler, u_restorer; |
| |
| ret = get_user(u_handler, &act->sa_handler); |
| new_ka.sa.sa_handler = (void *) (long) u_handler; |
| ret |= __get_user(u_restorer, &act->sa_restorer); |
| new_ka.sa.sa_restorer = (void *) (long) u_restorer; |
| ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); |
| ret |= __get_user(mask, &act->sa_mask); |
| if (ret) |
| return ret; |
| new_ka.ka_restorer = NULL; |
| siginitset(&new_ka.sa.sa_mask, mask); |
| } |
| |
| ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); |
| |
| if (!ret && oact) { |
| ret = put_user((long)old_ka.sa.sa_handler, &oact->sa_handler); |
| ret |= __put_user((long)old_ka.sa.sa_restorer, &oact->sa_restorer); |
| ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags); |
| ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); |
| } |
| |
| return ret; |
| } |
| |
| asmlinkage int |
| sys32_rt_sigaction(int sig, struct sigaction32 *act, struct sigaction32 *oact, |
| void *restorer, __kernel_size_t32 sigsetsize) |
| { |
| struct k_sigaction new_ka, old_ka; |
| int ret; |
| sigset_t32 set32; |
| |
| /* XXX: Don't preclude handling different sized sigset_t's. */ |
| if (sigsetsize != sizeof(sigset_t32)) |
| return -EINVAL; |
| |
| /* All tasks which use RT signals (effectively) use |
| * new style signals. |
| */ |
| current->thread.flags |= SPARC_FLAG_NEWSIGNALS; |
| |
| if (act) { |
| u32 u_handler, u_restorer; |
| |
| new_ka.ka_restorer = restorer; |
| ret = get_user(u_handler, &act->sa_handler); |
| new_ka.sa.sa_handler = (void *) (long) u_handler; |
| ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(sigset_t32)); |
| switch (_NSIG_WORDS) { |
| case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32); |
| case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32); |
| case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32); |
| case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32); |
| } |
| ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); |
| ret |= __get_user(u_restorer, &act->sa_restorer); |
| new_ka.sa.sa_restorer = (void *) (long) u_restorer; |
| if (ret) |
| return -EFAULT; |
| } |
| |
| ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); |
| |
| if (!ret && oact) { |
| switch (_NSIG_WORDS) { |
| case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3]; |
| case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2]; |
| case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1]; |
| case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0]; |
| } |
| ret = put_user((long)old_ka.sa.sa_handler, &oact->sa_handler); |
| ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(sigset_t32)); |
| ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags); |
| ret |= __put_user((long)old_ka.sa.sa_restorer, &oact->sa_restorer); |
| if (ret) |
| ret = -EFAULT; |
| } |
| |
| return ret; |
| } |
| |
| |
| /* |
| * count32() counts the number of arguments/envelopes |
| */ |
| static int count32(u32 * argv, int max) |
| { |
| int i = 0; |
| |
| if (argv != NULL) { |
| for (;;) { |
| u32 p; int error; |
| |
| error = get_user(p,argv); |
| if (error) |
| return error; |
| if (!p) |
| break; |
| argv++; |
| if (++i > max) |
| return -E2BIG; |
| } |
| } |
| return i; |
| } |
| |
| /* |
| * 'copy_string32()' copies argument/envelope strings from user |
| * memory to free pages in kernel mem. These are in a format ready |
| * to be put directly into the top of new user memory. |
| */ |
| static int copy_strings32(int argc, u32 * argv, struct linux_binprm *bprm) |
| { |
| while (argc-- > 0) { |
| u32 str; |
| int len; |
| unsigned long pos; |
| |
| if (get_user(str, argv + argc) || |
| !str || |
| !(len = strnlen_user((char *)A(str), bprm->p))) |
| return -EFAULT; |
| |
| if (bprm->p < len) |
| return -E2BIG; |
| |
| bprm->p -= len; |
| |
| pos = bprm->p; |
| while (len) { |
| char *kaddr; |
| struct page *page; |
| int offset, bytes_to_copy, new, err; |
| |
| offset = pos % PAGE_SIZE; |
| page = bprm->page[pos / PAGE_SIZE]; |
| new = 0; |
| if (!page) { |
| page = alloc_page(GFP_USER); |
| bprm->page[pos / PAGE_SIZE] = page; |
| if (!page) |
| return -ENOMEM; |
| new = 1; |
| } |
| kaddr = kmap(page); |
| |
| if (new && offset) |
| memset(kaddr, 0, offset); |
| bytes_to_copy = PAGE_SIZE - offset; |
| if (bytes_to_copy > len) { |
| bytes_to_copy = len; |
| if (new) |
| memset(kaddr+offset+len, 0, |
| PAGE_SIZE-offset-len); |
| } |
| |
| err = copy_from_user(kaddr + offset, (char *)A(str), |
| bytes_to_copy); |
| kunmap(page); |
| |
| if (err) |
| return -EFAULT; |
| |
| pos += bytes_to_copy; |
| str += bytes_to_copy; |
| len -= bytes_to_copy; |
| } |
| } |
| return 0; |
| } |
| |
| /* |
| * sys32_execve() executes a new program. |
| */ |
| static inline int |
| do_execve32(char * filename, u32 * argv, u32 * envp, struct pt_regs * regs) |
| { |
| struct linux_binprm bprm; |
| struct file * file; |
| int retval; |
| int i; |
| |
| bprm.p = PAGE_SIZE*MAX_ARG_PAGES-sizeof(void *); |
| memset(bprm.page, 0, MAX_ARG_PAGES * sizeof(bprm.page[0])); |
| |
| file = open_exec(filename); |
| |
| retval = PTR_ERR(file); |
| if (IS_ERR(file)) |
| return retval; |
| |
| bprm.file = file; |
| bprm.filename = filename; |
| bprm.sh_bang = 0; |
| bprm.loader = 0; |
| bprm.exec = 0; |
| if ((bprm.argc = count32(argv, bprm.p / sizeof(u32))) < 0) { |
| allow_write_access(file); |
| fput(file); |
| return bprm.argc; |
| } |
| if ((bprm.envc = count32(envp, bprm.p / sizeof(u32))) < 0) { |
| allow_write_access(file); |
| fput(file); |
| return bprm.envc; |
| } |
| |
| retval = prepare_binprm(&bprm); |
| if (retval < 0) |
| goto out; |
| |
| retval = copy_strings_kernel(1, &bprm.filename, &bprm); |
| if (retval < 0) |
| goto out; |
| |
| bprm.exec = bprm.p; |
| retval = copy_strings32(bprm.envc, envp, &bprm); |
| if (retval < 0) |
| goto out; |
| |
| retval = copy_strings32(bprm.argc, argv, &bprm); |
| if (retval < 0) |
| goto out; |
| |
| retval = search_binary_handler(&bprm, regs); |
| if (retval >= 0) |
| /* execve success */ |
| return retval; |
| |
| out: |
| /* Something went wrong, return the inode and free the argument pages*/ |
| allow_write_access(bprm.file); |
| if (bprm.file) |
| fput(bprm.file); |
| |
| for (i=0 ; i<MAX_ARG_PAGES ; i++) |
| if (bprm.page[i]) |
| __free_page(bprm.page[i]); |
| |
| return retval; |
| } |
| |
| /* |
| * sparc32_execve() executes a new program after the asm stub has set |
| * things up for us. This should basically do what I want it to. |
| */ |
| asmlinkage int sparc32_execve(struct pt_regs *regs) |
| { |
| int error, base = 0; |
| char *filename; |
| |
| /* User register window flush is done by entry.S */ |
| |
| /* Check for indirect call. */ |
| if((u32)regs->u_regs[UREG_G1] == 0) |
| base = 1; |
| |
| filename = getname((char *)AA(regs->u_regs[base + UREG_I0])); |
| error = PTR_ERR(filename); |
| if(IS_ERR(filename)) |
| goto out; |
| error = do_execve32(filename, |
| (u32 *)AA((u32)regs->u_regs[base + UREG_I1]), |
| (u32 *)AA((u32)regs->u_regs[base + UREG_I2]), regs); |
| putname(filename); |
| |
| if(!error) { |
| fprs_write(0); |
| current->thread.xfsr[0] = 0; |
| current->thread.fpsaved[0] = 0; |
| regs->tstate &= ~TSTATE_PEF; |
| } |
| out: |
| return error; |
| } |
| |
| #ifdef CONFIG_MODULES |
| |
| extern asmlinkage unsigned long sys_create_module(const char *name_user, size_t size); |
| |
| asmlinkage unsigned long sys32_create_module(const char *name_user, __kernel_size_t32 size) |
| { |
| return sys_create_module(name_user, (size_t)size); |
| } |
| |
| extern asmlinkage int sys_init_module(const char *name_user, struct module *mod_user); |
| |
| /* Hey, when you're trying to init module, take time and prepare us a nice 64bit |
| * module structure, even if from 32bit modutils... Why to pollute kernel... :)) |
| */ |
| asmlinkage int sys32_init_module(const char *name_user, struct module *mod_user) |
| { |
| return sys_init_module(name_user, mod_user); |
| } |
| |
| extern asmlinkage int sys_delete_module(const char *name_user); |
| |
| asmlinkage int sys32_delete_module(const char *name_user) |
| { |
| return sys_delete_module(name_user); |
| } |
| |
| struct module_info32 { |
| u32 addr; |
| u32 size; |
| u32 flags; |
| s32 usecount; |
| }; |
| |
| /* Query various bits about modules. */ |
| |
| static inline long |
| get_mod_name(const char *user_name, char **buf) |
| { |
| unsigned long page; |
| long retval; |
| |
| if ((unsigned long)user_name >= TASK_SIZE |
| && !segment_eq(get_fs (), KERNEL_DS)) |
| return -EFAULT; |
| |
| page = __get_free_page(GFP_KERNEL); |
| if (!page) |
| return -ENOMEM; |
| |
| retval = strncpy_from_user((char *)page, user_name, PAGE_SIZE); |
| if (retval > 0) { |
| if (retval < PAGE_SIZE) { |
| *buf = (char *)page; |
| return retval; |
| } |
| retval = -ENAMETOOLONG; |
| } else if (!retval) |
| retval = -EINVAL; |
| |
| free_page(page); |
| return retval; |
| } |
| |
| static inline void |
| put_mod_name(char *buf) |
| { |
| free_page((unsigned long)buf); |
| } |
| |
| static __inline__ struct module *find_module(const char *name) |
| { |
| struct module *mod; |
| |
| for (mod = module_list; mod ; mod = mod->next) { |
| if (mod->flags & MOD_DELETED) |
| continue; |
| if (!strcmp(mod->name, name)) |
| break; |
| } |
| |
| return mod; |
| } |
| |
| static int |
| qm_modules(char *buf, size_t bufsize, __kernel_size_t32 *ret) |
| { |
| struct module *mod; |
| size_t nmod, space, len; |
| |
| nmod = space = 0; |
| |
| for (mod = module_list; mod->next != NULL; mod = mod->next, ++nmod) { |
| len = strlen(mod->name)+1; |
| if (len > bufsize) |
| goto calc_space_needed; |
| if (copy_to_user(buf, mod->name, len)) |
| return -EFAULT; |
| buf += len; |
| bufsize -= len; |
| space += len; |
| } |
| |
| if (put_user(nmod, ret)) |
| return -EFAULT; |
| else |
| return 0; |
| |
| calc_space_needed: |
| space += len; |
| while ((mod = mod->next)->next != NULL) |
| space += strlen(mod->name)+1; |
| |
| if (put_user(space, ret)) |
| return -EFAULT; |
| else |
| return -ENOSPC; |
| } |
| |
| static int |
| qm_deps(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret) |
| { |
| size_t i, space, len; |
| |
| if (mod->next == NULL) |
| return -EINVAL; |
| if (!MOD_CAN_QUERY(mod)) |
| return put_user(0, ret); |
| |
| space = 0; |
| for (i = 0; i < mod->ndeps; ++i) { |
| const char *dep_name = mod->deps[i].dep->name; |
| |
| len = strlen(dep_name)+1; |
| if (len > bufsize) |
| goto calc_space_needed; |
| if (copy_to_user(buf, dep_name, len)) |
| return -EFAULT; |
| buf += len; |
| bufsize -= len; |
| space += len; |
| } |
| |
| return put_user(i, ret); |
| |
| calc_space_needed: |
| space += len; |
| while (++i < mod->ndeps) |
| space += strlen(mod->deps[i].dep->name)+1; |
| |
| if (put_user(space, ret)) |
| return -EFAULT; |
| else |
| return -ENOSPC; |
| } |
| |
| static int |
| qm_refs(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret) |
| { |
| size_t nrefs, space, len; |
| struct module_ref *ref; |
| |
| if (mod->next == NULL) |
| return -EINVAL; |
| if (!MOD_CAN_QUERY(mod)) |
| if (put_user(0, ret)) |
| return -EFAULT; |
| else |
| return 0; |
| |
| space = 0; |
| for (nrefs = 0, ref = mod->refs; ref ; ++nrefs, ref = ref->next_ref) { |
| const char *ref_name = ref->ref->name; |
| |
| len = strlen(ref_name)+1; |
| if (len > bufsize) |
| goto calc_space_needed; |
| if (copy_to_user(buf, ref_name, len)) |
| return -EFAULT; |
| buf += len; |
| bufsize -= len; |
| space += len; |
| } |
| |
| if (put_user(nrefs, ret)) |
| return -EFAULT; |
| else |
| return 0; |
| |
| calc_space_needed: |
| space += len; |
| while ((ref = ref->next_ref) != NULL) |
| space += strlen(ref->ref->name)+1; |
| |
| if (put_user(space, ret)) |
| return -EFAULT; |
| else |
| return -ENOSPC; |
| } |
| |
| static inline int |
| qm_symbols(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret) |
| { |
| size_t i, space, len; |
| struct module_symbol *s; |
| char *strings; |
| unsigned *vals; |
| |
| if (!MOD_CAN_QUERY(mod)) |
| if (put_user(0, ret)) |
| return -EFAULT; |
| else |
| return 0; |
| |
| space = mod->nsyms * 2*sizeof(u32); |
| |
| i = len = 0; |
| s = mod->syms; |
| |
| if (space > bufsize) |
| goto calc_space_needed; |
| |
| if (!access_ok(VERIFY_WRITE, buf, space)) |
| return -EFAULT; |
| |
| bufsize -= space; |
| vals = (unsigned *)buf; |
| strings = buf+space; |
| |
| for (; i < mod->nsyms ; ++i, ++s, vals += 2) { |
| len = strlen(s->name)+1; |
| if (len > bufsize) |
| goto calc_space_needed; |
| |
| if (copy_to_user(strings, s->name, len) |
| || __put_user(s->value, vals+0) |
| || __put_user(space, vals+1)) |
| return -EFAULT; |
| |
| strings += len; |
| bufsize -= len; |
| space += len; |
| } |
| |
| if (put_user(i, ret)) |
| return -EFAULT; |
| else |
| return 0; |
| |
| calc_space_needed: |
| for (; i < mod->nsyms; ++i, ++s) |
| space += strlen(s->name)+1; |
| |
| if (put_user(space, ret)) |
| return -EFAULT; |
| else |
| return -ENOSPC; |
| } |
| |
| static inline int |
| qm_info(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret) |
| { |
| int error = 0; |
| |
| if (mod->next == NULL) |
| return -EINVAL; |
| |
| if (sizeof(struct module_info32) <= bufsize) { |
| struct module_info32 info; |
| info.addr = (unsigned long)mod; |
| info.size = mod->size; |
| info.flags = mod->flags; |
| info.usecount = |
| ((mod_member_present(mod, can_unload) |
| && mod->can_unload) |
| ? -1 : atomic_read(&mod->uc.usecount)); |
| |
| if (copy_to_user(buf, &info, sizeof(struct module_info32))) |
| return -EFAULT; |
| } else |
| error = -ENOSPC; |
| |
| if (put_user(sizeof(struct module_info32), ret)) |
| return -EFAULT; |
| |
| return error; |
| } |
| |
| asmlinkage int sys32_query_module(char *name_user, int which, char *buf, __kernel_size_t32 bufsize, u32 ret) |
| { |
| struct module *mod; |
| int err; |
| |
| lock_kernel(); |
| if (name_user == 0) { |
| /* This finds "kernel_module" which is not exported. */ |
| for(mod = module_list; mod->next != NULL; mod = mod->next) |
| ; |
| } else { |
| long namelen; |
| char *name; |
| |
| if ((namelen = get_mod_name(name_user, &name)) < 0) { |
| err = namelen; |
| goto out; |
| } |
| err = -ENOENT; |
| if (namelen == 0) { |
| /* This finds "kernel_module" which is not exported. */ |
| for(mod = module_list; mod->next != NULL; mod = mod->next) |
| ; |
| } else if ((mod = find_module(name)) == NULL) { |
| put_mod_name(name); |
| goto out; |
| } |
| put_mod_name(name); |
| } |
| |
| switch (which) |
| { |
| case 0: |
| err = 0; |
| break; |
| case QM_MODULES: |
| err = qm_modules(buf, bufsize, (__kernel_size_t32 *)AA(ret)); |
| break; |
| case QM_DEPS: |
| err = qm_deps(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret)); |
| break; |
| case QM_REFS: |
| err = qm_refs(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret)); |
| break; |
| case QM_SYMBOLS: |
| err = qm_symbols(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret)); |
| break; |
| case QM_INFO: |
| err = qm_info(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret)); |
| break; |
| default: |
| err = -EINVAL; |
| break; |
| } |
| out: |
| unlock_kernel(); |
| return err; |
| } |
| |
| struct kernel_sym32 { |
| u32 value; |
| char name[60]; |
| }; |
| |
| extern asmlinkage int sys_get_kernel_syms(struct kernel_sym *table); |
| |
| asmlinkage int sys32_get_kernel_syms(struct kernel_sym32 *table) |
| { |
| int len, i; |
| struct kernel_sym *tbl; |
| mm_segment_t old_fs; |
| |
| len = sys_get_kernel_syms(NULL); |
| if (!table) return len; |
| tbl = kmalloc (len * sizeof (struct kernel_sym), GFP_KERNEL); |
| if (!tbl) return -ENOMEM; |
| old_fs = get_fs(); |
| set_fs (KERNEL_DS); |
| sys_get_kernel_syms(tbl); |
| set_fs (old_fs); |
| for (i = 0; i < len; i++, table++) { |
| if (put_user (tbl[i].value, &table->value) || |
| copy_to_user (table->name, tbl[i].name, 60)) |
| break; |
| } |
| kfree (tbl); |
| return i; |
| } |
| |
| #else /* CONFIG_MODULES */ |
| |
| asmlinkage unsigned long |
| sys32_create_module(const char *name_user, size_t size) |
| { |
| return -ENOSYS; |
| } |
| |
| asmlinkage int |
| sys32_init_module(const char *name_user, struct module *mod_user) |
| { |
| return -ENOSYS; |
| } |
| |
| asmlinkage int |
| sys32_delete_module(const char *name_user) |
| { |
| return -ENOSYS; |
| } |
| |
| asmlinkage int |
| sys32_query_module(const char *name_user, int which, char *buf, size_t bufsize, |
| size_t *ret) |
| { |
| /* Let the program know about the new interface. Not that |
| it'll do them much good. */ |
| if (which == 0) |
| return 0; |
| |
| return -ENOSYS; |
| } |
| |
| asmlinkage int |
| sys32_get_kernel_syms(struct kernel_sym *table) |
| { |
| return -ENOSYS; |
| } |
| |
| #endif /* CONFIG_MODULES */ |
| |
| #if defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE) |
| /* Stuff for NFS server syscalls... */ |
| struct nfsctl_svc32 { |
| u16 svc32_port; |
| s32 svc32_nthreads; |
| }; |
| |
| struct nfsctl_client32 { |
| s8 cl32_ident[NFSCLNT_IDMAX+1]; |
| s32 cl32_naddr; |
| struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX]; |
| s32 cl32_fhkeytype; |
| s32 cl32_fhkeylen; |
| u8 cl32_fhkey[NFSCLNT_KEYMAX]; |
| }; |
| |
| struct nfsctl_export32 { |
| s8 ex32_client[NFSCLNT_IDMAX+1]; |
| s8 ex32_path[NFS_MAXPATHLEN+1]; |
| __kernel_dev_t32 ex32_dev; |
| __kernel_ino_t32 ex32_ino; |
| s32 ex32_flags; |
| __kernel_uid_t32 ex32_anon_uid; |
| __kernel_gid_t32 ex32_anon_gid; |
| }; |
| |
| struct nfsctl_uidmap32 { |
| u32 ug32_ident; /* char * */ |
| __kernel_uid_t32 ug32_uidbase; |
| s32 ug32_uidlen; |
| u32 ug32_udimap; /* uid_t * */ |
| __kernel_uid_t32 ug32_gidbase; |
| s32 ug32_gidlen; |
| u32 ug32_gdimap; /* gid_t * */ |
| }; |
| |
| struct nfsctl_fhparm32 { |
| struct sockaddr gf32_addr; |
| __kernel_dev_t32 gf32_dev; |
| __kernel_ino_t32 gf32_ino; |
| s32 gf32_version; |
| }; |
| |
| struct nfsctl_fdparm32 { |
| struct sockaddr gd32_addr; |
| s8 gd32_path[NFS_MAXPATHLEN+1]; |
| s32 gd32_version; |
| }; |
| |
| struct nfsctl_fsparm32 { |
| struct sockaddr gd32_addr; |
| s8 gd32_path[NFS_MAXPATHLEN+1]; |
| s32 gd32_maxlen; |
| }; |
| |
| struct nfsctl_arg32 { |
| s32 ca32_version; /* safeguard */ |
| union { |
| struct nfsctl_svc32 u32_svc; |
| struct nfsctl_client32 u32_client; |
| struct nfsctl_export32 u32_export; |
| struct nfsctl_uidmap32 u32_umap; |
| struct nfsctl_fhparm32 u32_getfh; |
| struct nfsctl_fdparm32 u32_getfd; |
| struct nfsctl_fsparm32 u32_getfs; |
| } u; |
| #define ca32_svc u.u32_svc |
| #define ca32_client u.u32_client |
| #define ca32_export u.u32_export |
| #define ca32_umap u.u32_umap |
| #define ca32_getfh u.u32_getfh |
| #define ca32_getfd u.u32_getfd |
| #define ca32_getfs u.u32_getfs |
| #define ca32_authd u.u32_authd |
| }; |
| |
| union nfsctl_res32 { |
| __u8 cr32_getfh[NFS_FHSIZE]; |
| struct knfsd_fh cr32_getfs; |
| }; |
| |
| static int nfs_svc32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32) |
| { |
| int err; |
| |
| err = __get_user(karg->ca_version, &arg32->ca32_version); |
| err |= __get_user(karg->ca_svc.svc_port, &arg32->ca32_svc.svc32_port); |
| err |= __get_user(karg->ca_svc.svc_nthreads, &arg32->ca32_svc.svc32_nthreads); |
| return err; |
| } |
| |
| static int nfs_clnt32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32) |
| { |
| int err; |
| |
| err = __get_user(karg->ca_version, &arg32->ca32_version); |
| err |= copy_from_user(&karg->ca_client.cl_ident[0], |
| &arg32->ca32_client.cl32_ident[0], |
| NFSCLNT_IDMAX); |
| err |= __get_user(karg->ca_client.cl_naddr, &arg32->ca32_client.cl32_naddr); |
| err |= copy_from_user(&karg->ca_client.cl_addrlist[0], |
| &arg32->ca32_client.cl32_addrlist[0], |
| (sizeof(struct in_addr) * NFSCLNT_ADDRMAX)); |
| err |= __get_user(karg->ca_client.cl_fhkeytype, |
| &arg32->ca32_client.cl32_fhkeytype); |
| err |= __get_user(karg->ca_client.cl_fhkeylen, |
| &arg32->ca32_client.cl32_fhkeylen); |
| err |= copy_from_user(&karg->ca_client.cl_fhkey[0], |
| &arg32->ca32_client.cl32_fhkey[0], |
| NFSCLNT_KEYMAX); |
| return (err ? -EFAULT : 0); |
| } |
| |
| static int nfs_exp32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32) |
| { |
| int err; |
| |
| err = __get_user(karg->ca_version, &arg32->ca32_version); |
| err |= copy_from_user(&karg->ca_export.ex_client[0], |
| &arg32->ca32_export.ex32_client[0], |
| NFSCLNT_IDMAX); |
| err |= copy_from_user(&karg->ca_export.ex_path[0], |
| &arg32->ca32_export.ex32_path[0], |
| NFS_MAXPATHLEN); |
| err |= __get_user(karg->ca_export.ex_dev, |
| &arg32->ca32_export.ex32_dev); |
| err |= __get_user(karg->ca_export.ex_ino, |
| &arg32->ca32_export.ex32_ino); |
| err |= __get_user(karg->ca_export.ex_flags, |
| &arg32->ca32_export.ex32_flags); |
| err |= __get_user(karg->ca_export.ex_anon_uid, |
| &arg32->ca32_export.ex32_anon_uid); |
| err |= __get_user(karg->ca_export.ex_anon_gid, |
| &arg32->ca32_export.ex32_anon_gid); |
| karg->ca_export.ex_anon_uid = high2lowuid(karg->ca_export.ex_anon_uid); |
| karg->ca_export.ex_anon_gid = high2lowgid(karg->ca_export.ex_anon_gid); |
| return (err ? -EFAULT : 0); |
| } |
| |
| static int nfs_uud32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32) |
| { |
| u32 uaddr; |
| int i; |
| int err; |
| |
| memset(karg, 0, sizeof(*karg)); |
| if(__get_user(karg->ca_version, &arg32->ca32_version)) |
| return -EFAULT; |
| karg->ca_umap.ug_ident = (char *)get_free_page(GFP_USER); |
| if(!karg->ca_umap.ug_ident) |
| return -ENOMEM; |
| err = __get_user(uaddr, &arg32->ca32_umap.ug32_ident); |
| if(strncpy_from_user(karg->ca_umap.ug_ident, |
| (char *)A(uaddr), PAGE_SIZE) <= 0) |
| return -EFAULT; |
| err |= __get_user(karg->ca_umap.ug_uidbase, |
| &arg32->ca32_umap.ug32_uidbase); |
| err |= __get_user(karg->ca_umap.ug_uidlen, |
| &arg32->ca32_umap.ug32_uidlen); |
| err |= __get_user(uaddr, &arg32->ca32_umap.ug32_udimap); |
| if (err) |
| return -EFAULT; |
| karg->ca_umap.ug_udimap = kmalloc((sizeof(uid_t) * karg->ca_umap.ug_uidlen), |
| GFP_USER); |
| if(!karg->ca_umap.ug_udimap) |
| return -ENOMEM; |
| for(i = 0; i < karg->ca_umap.ug_uidlen; i++) |
| err |= __get_user(karg->ca_umap.ug_udimap[i], |
| &(((__kernel_uid_t32 *)A(uaddr))[i])); |
| err |= __get_user(karg->ca_umap.ug_gidbase, |
| &arg32->ca32_umap.ug32_gidbase); |
| err |= __get_user(karg->ca_umap.ug_uidlen, |
| &arg32->ca32_umap.ug32_gidlen); |
| err |= __get_user(uaddr, &arg32->ca32_umap.ug32_gdimap); |
| if (err) |
| return -EFAULT; |
| karg->ca_umap.ug_gdimap = kmalloc((sizeof(gid_t) * karg->ca_umap.ug_uidlen), |
| GFP_USER); |
| if(!karg->ca_umap.ug_gdimap) |
| return -ENOMEM; |
| for(i = 0; i < karg->ca_umap.ug_gidlen; i++) |
| err |= __get_user(karg->ca_umap.ug_gdimap[i], |
| &(((__kernel_gid_t32 *)A(uaddr))[i])); |
| |
| return (err ? -EFAULT : 0); |
| } |
| |
| static int nfs_getfh32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32) |
| { |
| int err; |
| |
| err = __get_user(karg->ca_version, &arg32->ca32_version); |
| err |= copy_from_user(&karg->ca_getfh.gf_addr, |
| &arg32->ca32_getfh.gf32_addr, |
| (sizeof(struct sockaddr))); |
| err |= __get_user(karg->ca_getfh.gf_dev, |
| &arg32->ca32_getfh.gf32_dev); |
| err |= __get_user(karg->ca_getfh.gf_ino, |
| &arg32->ca32_getfh.gf32_ino); |
| err |= __get_user(karg->ca_getfh.gf_version, |
| &arg32->ca32_getfh.gf32_version); |
| return (err ? -EFAULT : 0); |
| } |
| |
| static int nfs_getfd32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32) |
| { |
| int err; |
| |
| err = __get_user(karg->ca_version, &arg32->ca32_version); |
| err |= copy_from_user(&karg->ca_getfd.gd_addr, |
| &arg32->ca32_getfd.gd32_addr, |
| (sizeof(struct sockaddr))); |
| err |= copy_from_user(&karg->ca_getfd.gd_path, |
| &arg32->ca32_getfd.gd32_path, |
| (NFS_MAXPATHLEN+1)); |
| err |= __get_user(karg->ca_getfd.gd_version, |
| &arg32->ca32_getfd.gd32_version); |
| return (err ? -EFAULT : 0); |
| } |
| |
| static int nfs_getfs32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32) |
| { |
| int err; |
| |
| err = __get_user(karg->ca_version, &arg32->ca32_version); |
| err |= copy_from_user(&karg->ca_getfs.gd_addr, |
| &arg32->ca32_getfs.gd32_addr, |
| (sizeof(struct sockaddr))); |
| err |= copy_from_user(&karg->ca_getfs.gd_path, |
| &arg32->ca32_getfs.gd32_path, |
| (NFS_MAXPATHLEN+1)); |
| err |= __get_user(karg->ca_getfs.gd_maxlen, |
| &arg32->ca32_getfs.gd32_maxlen); |
| return (err ? -EFAULT : 0); |
| } |
| |
| /* This really doesn't need translations, we are only passing |
| * back a union which contains opaque nfs file handle data. |
| */ |
| static int nfs_getfh32_res_trans(union nfsctl_res *kres, union nfsctl_res32 *res32) |
| { |
| return (copy_to_user(res32, kres, sizeof(*res32)) ? -EFAULT : 0); |
| } |
| |
| int asmlinkage sys32_nfsservctl(int cmd, struct nfsctl_arg32 *arg32, union nfsctl_res32 *res32) |
| { |
| struct nfsctl_arg *karg = NULL; |
| union nfsctl_res *kres = NULL; |
| mm_segment_t oldfs; |
| int err; |
| |
| karg = kmalloc(sizeof(*karg), GFP_USER); |
| if(!karg) |
| return -ENOMEM; |
| if(res32) { |
| kres = kmalloc(sizeof(*kres), GFP_USER); |
| if(!kres) { |
| kfree(karg); |
| return -ENOMEM; |
| } |
| } |
| switch(cmd) { |
| case NFSCTL_SVC: |
| err = nfs_svc32_trans(karg, arg32); |
| break; |
| case NFSCTL_ADDCLIENT: |
| err = nfs_clnt32_trans(karg, arg32); |
| break; |
| case NFSCTL_DELCLIENT: |
| err = nfs_clnt32_trans(karg, arg32); |
| break; |
| case NFSCTL_EXPORT: |
| case NFSCTL_UNEXPORT: |
| err = nfs_exp32_trans(karg, arg32); |
| break; |
| /* This one is unimplemented, be we're ready for it. */ |
| case NFSCTL_UGIDUPDATE: |
| err = nfs_uud32_trans(karg, arg32); |
| break; |
| case NFSCTL_GETFH: |
| err = nfs_getfh32_trans(karg, arg32); |
| break; |
| case NFSCTL_GETFD: |
| err = nfs_getfd32_trans(karg, arg32); |
| break; |
| case NFSCTL_GETFS: |
| err = nfs_getfs32_trans(karg, arg32); |
| break; |
| default: |
| err = -EINVAL; |
| break; |
| } |
| if(err) |
| goto done; |
| oldfs = get_fs(); |
| set_fs(KERNEL_DS); |
| err = sys_nfsservctl(cmd, karg, kres); |
| set_fs(oldfs); |
| |
| if (err) |
| goto done; |
| |
| if((cmd == NFSCTL_GETFH) || |
| (cmd == NFSCTL_GETFD) || |
| (cmd == NFSCTL_GETFS)) |
| err = nfs_getfh32_res_trans(kres, res32); |
| |
| done: |
| if(karg) { |
| if(cmd == NFSCTL_UGIDUPDATE) { |
| if(karg->ca_umap.ug_ident) |
| kfree(karg->ca_umap.ug_ident); |
| if(karg->ca_umap.ug_udimap) |
| kfree(karg->ca_umap.ug_udimap); |
| if(karg->ca_umap.ug_gdimap) |
| kfree(karg->ca_umap.ug_gdimap); |
| } |
| kfree(karg); |
| } |
| if(kres) |
| kfree(kres); |
| return err; |
| } |
| #else /* !NFSD */ |
| extern asmlinkage long sys_ni_syscall(void); |
| int asmlinkage sys32_nfsservctl(int cmd, void *notused, void *notused2) |
| { |
| return sys_ni_syscall(); |
| } |
| #endif |
| |
| /* Translations due to time_t size differences. Which affects all |
| sorts of things, like timeval and itimerval. */ |
| |
| extern struct timezone sys_tz; |
| extern int do_sys_settimeofday(struct timeval *tv, struct timezone *tz); |
| |
| asmlinkage int sys32_gettimeofday(struct timeval32 *tv, struct timezone *tz) |
| { |
| if (tv) { |
| struct timeval ktv; |
| do_gettimeofday(&ktv); |
| if (put_tv32(tv, &ktv)) |
| return -EFAULT; |
| } |
| if (tz) { |
| if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) |
| return -EFAULT; |
| } |
| return 0; |
| } |
| |
| asmlinkage int sys32_settimeofday(struct timeval32 *tv, struct timezone *tz) |
| { |
| struct timeval ktv; |
| struct timezone ktz; |
| |
| if (tv) { |
| if (get_tv32(&ktv, tv)) |
| return -EFAULT; |
| } |
| if (tz) { |
| if (copy_from_user(&ktz, tz, sizeof(ktz))) |
| return -EFAULT; |
| } |
| |
| return do_sys_settimeofday(tv ? &ktv : NULL, tz ? &ktz : NULL); |
| } |
| |
| extern int do_getitimer(int which, struct itimerval *value); |
| |
| asmlinkage int sys32_getitimer(int which, struct itimerval32 *it) |
| { |
| struct itimerval kit; |
| int error; |
| |
| error = do_getitimer(which, &kit); |
| if (!error && put_it32(it, &kit)) |
| error = -EFAULT; |
| |
| return error; |
| } |
| |
| extern int do_setitimer(int which, struct itimerval *, struct itimerval *); |
| |
| asmlinkage int sys32_setitimer(int which, struct itimerval32 *in, struct itimerval32 *out) |
| { |
| struct itimerval kin, kout; |
| int error; |
| |
| if (in) { |
| if (get_it32(&kin, in)) |
| return -EFAULT; |
| } else |
| memset(&kin, 0, sizeof(kin)); |
| |
| error = do_setitimer(which, &kin, out ? &kout : NULL); |
| if (error || !out) |
| return error; |
| if (put_it32(out, &kout)) |
| return -EFAULT; |
| |
| return 0; |
| |
| } |
| |
| asmlinkage int sys_utimes(char *, struct timeval *); |
| |
| asmlinkage int sys32_utimes(char *filename, struct timeval32 *tvs) |
| { |
| char *kfilename; |
| struct timeval ktvs[2]; |
| mm_segment_t old_fs; |
| int ret; |
| |
| kfilename = getname(filename); |
| ret = PTR_ERR(kfilename); |
| if (!IS_ERR(kfilename)) { |
| if (tvs) { |
| if (get_tv32(&ktvs[0], tvs) || |
| get_tv32(&ktvs[1], 1+tvs)) |
| return -EFAULT; |
| } |
| |
| old_fs = get_fs(); |
| set_fs(KERNEL_DS); |
| ret = sys_utimes(kfilename, (tvs ? &ktvs[0] : NULL)); |
| set_fs(old_fs); |
| |
| putname(kfilename); |
| } |
| return ret; |
| } |
| |
| /* These are here just in case some old sparc32 binary calls it. */ |
| asmlinkage int sys32_pause(void) |
| { |
| current->state = TASK_INTERRUPTIBLE; |
| schedule(); |
| return -ERESTARTNOHAND; |
| } |
| |
| /* PCI config space poking. */ |
| extern asmlinkage int sys_pciconfig_read(unsigned long bus, |
| unsigned long dfn, |
| unsigned long off, |
| unsigned long len, |
| unsigned char *buf); |
| |
| extern asmlinkage int sys_pciconfig_write(unsigned long bus, |
| unsigned long dfn, |
| unsigned long off, |
| unsigned long len, |
| unsigned char *buf); |
| |
| asmlinkage int sys32_pciconfig_read(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf) |
| { |
| return sys_pciconfig_read((unsigned long) bus, |
| (unsigned long) dfn, |
| (unsigned long) off, |
| (unsigned long) len, |
| (unsigned char *)AA(ubuf)); |
| } |
| |
| asmlinkage int sys32_pciconfig_write(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf) |
| { |
| return sys_pciconfig_write((unsigned long) bus, |
| (unsigned long) dfn, |
| (unsigned long) off, |
| (unsigned long) len, |
| (unsigned char *)AA(ubuf)); |
| } |
| |
| extern asmlinkage int sys_prctl(int option, unsigned long arg2, unsigned long arg3, |
| unsigned long arg4, unsigned long arg5); |
| |
| asmlinkage int sys32_prctl(int option, u32 arg2, u32 arg3, u32 arg4, u32 arg5) |
| { |
| return sys_prctl(option, |
| (unsigned long) arg2, |
| (unsigned long) arg3, |
| (unsigned long) arg4, |
| (unsigned long) arg5); |
| } |
| |
| |
| extern asmlinkage ssize_t sys_pread(unsigned int fd, char * buf, |
| size_t count, loff_t pos); |
| |
| extern asmlinkage ssize_t sys_pwrite(unsigned int fd, const char * buf, |
| size_t count, loff_t pos); |
| |
| typedef __kernel_ssize_t32 ssize_t32; |
| |
| asmlinkage ssize_t32 sys32_pread(unsigned int fd, char *ubuf, |
| __kernel_size_t32 count, u32 poshi, u32 poslo) |
| { |
| return sys_pread(fd, ubuf, count, ((loff_t)AA(poshi) << 32) | AA(poslo)); |
| } |
| |
| asmlinkage ssize_t32 sys32_pwrite(unsigned int fd, char *ubuf, |
| __kernel_size_t32 count, u32 poshi, u32 poslo) |
| { |
| return sys_pwrite(fd, ubuf, count, ((loff_t)AA(poshi) << 32) | AA(poslo)); |
| } |
| |
| extern asmlinkage ssize_t sys_readahead(int fd, loff_t offset, size_t count); |
| |
| asmlinkage ssize_t32 sys32_readahead(int fd, u32 offhi, u32 offlo, s32 count) |
| { |
| return sys_readahead(fd, ((loff_t)AA(offhi) << 32) | AA(offlo), count); |
| } |
| |
| extern asmlinkage ssize_t sys_sendfile(int out_fd, int in_fd, off_t *offset, size_t count); |
| |
| asmlinkage int sys32_sendfile(int out_fd, int in_fd, __kernel_off_t32 *offset, s32 count) |
| { |
| mm_segment_t old_fs = get_fs(); |
| int ret; |
| off_t of; |
| |
| if (offset && get_user(of, offset)) |
| return -EFAULT; |
| |
| set_fs(KERNEL_DS); |
| ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count); |
| set_fs(old_fs); |
| |
| if (offset && put_user(of, offset)) |
| return -EFAULT; |
| |
| return ret; |
| } |
| |
| /* Handle adjtimex compatability. */ |
| |
| struct timex32 { |
| u32 modes; |
| s32 offset, freq, maxerror, esterror; |
| s32 status, constant, precision, tolerance; |
| struct timeval32 time; |
| s32 tick; |
| s32 ppsfreq, jitter, shift, stabil; |
| s32 jitcnt, calcnt, errcnt, stbcnt; |
| s32 :32; s32 :32; s32 :32; s32 :32; |
| s32 :32; s32 :32; s32 :32; s32 :32; |
| s32 :32; s32 :32; s32 :32; s32 :32; |
| }; |
| |
| extern int do_adjtimex(struct timex *); |
| |
| asmlinkage int sys32_adjtimex(struct timex32 *utp) |
| { |
| struct timex txc; |
| int ret; |
| |
| memset(&txc, 0, sizeof(struct timex)); |
| |
| if(get_user(txc.modes, &utp->modes) || |
| __get_user(txc.offset, &utp->offset) || |
| __get_user(txc.freq, &utp->freq) || |
| __get_user(txc.maxerror, &utp->maxerror) || |
| __get_user(txc.esterror, &utp->esterror) || |
| __get_user(txc.status, &utp->status) || |
| __get_user(txc.constant, &utp->constant) || |
| __get_user(txc.precision, &utp->precision) || |
| __get_user(txc.tolerance, &utp->tolerance) || |
| __get_user(txc.time.tv_sec, &utp->time.tv_sec) || |
| __get_user(txc.time.tv_usec, &utp->time.tv_usec) || |
| __get_user(txc.tick, &utp->tick) || |
| __get_user(txc.ppsfreq, &utp->ppsfreq) || |
| __get_user(txc.jitter, &utp->jitter) || |
| __get_user(txc.shift, &utp->shift) || |
| __get_user(txc.stabil, &utp->stabil) || |
| __get_user(txc.jitcnt, &utp->jitcnt) || |
| __get_user(txc.calcnt, &utp->calcnt) || |
| __get_user(txc.errcnt, &utp->errcnt) || |
| __get_user(txc.stbcnt, &utp->stbcnt)) |
| return -EFAULT; |
| |
| ret = do_adjtimex(&txc); |
| |
| if(put_user(txc.modes, &utp->modes) || |
| __put_user(txc.offset, &utp->offset) || |
| __put_user(txc.freq, &utp->freq) || |
| __put_user(txc.maxerror, &utp->maxerror) || |
| __put_user(txc.esterror, &utp->esterror) || |
| __put_user(txc.status, &utp->status) || |
| __put_user(txc.constant, &utp->constant) || |
| __put_user(txc.precision, &utp->precision) || |
| __put_user(txc.tolerance, &utp->tolerance) || |
| __put_user(txc.time.tv_sec, &utp->time.tv_sec) || |
| __put_user(txc.time.tv_usec, &utp->time.tv_usec) || |
| __put_user(txc.tick, &utp->tick) || |
| __put_user(txc.ppsfreq, &utp->ppsfreq) || |
| __put_user(txc.jitter, &utp->jitter) || |
| __put_user(txc.shift, &utp->shift) || |
| __put_user(txc.stabil, &utp->stabil) || |
| __put_user(txc.jitcnt, &utp->jitcnt) || |
| __put_user(txc.calcnt, &utp->calcnt) || |
| __put_user(txc.errcnt, &utp->errcnt) || |
| __put_user(txc.stbcnt, &utp->stbcnt)) |
| ret = -EFAULT; |
| |
| return ret; |
| } |
| |
| /* This is just a version for 32-bit applications which does |
| * not force O_LARGEFILE on. |
| */ |
| |
| asmlinkage long sparc32_open(const char * filename, int flags, int mode) |
| { |
| char * tmp; |
| int fd, error; |
| |
| tmp = getname(filename); |
| fd = PTR_ERR(tmp); |
| if (!IS_ERR(tmp)) { |
| fd = get_unused_fd(); |
| if (fd >= 0) { |
| struct file * f = filp_open(tmp, flags, mode); |
| error = PTR_ERR(f); |
| if (IS_ERR(f)) |
| goto out_error; |
| fd_install(fd, f); |
| } |
| out: |
| putname(tmp); |
| } |
| return fd; |
| |
| out_error: |
| put_unused_fd(fd); |
| fd = error; |
| goto out; |
| } |
| |
| extern unsigned long do_mremap(unsigned long addr, |
| unsigned long old_len, unsigned long new_len, |
| unsigned long flags, unsigned long new_addr); |
| |
| asmlinkage unsigned long sys32_mremap(unsigned long addr, |
| unsigned long old_len, unsigned long new_len, |
| unsigned long flags, u32 __new_addr) |
| { |
| struct vm_area_struct *vma; |
| unsigned long ret = -EINVAL; |
| unsigned long new_addr = AA(__new_addr); |
| |
| if (old_len > 0xf0000000UL || new_len > 0xf0000000UL) |
| goto out; |
| if (addr > 0xf0000000UL - old_len) |
| goto out; |
| down_write(¤t->mm->mmap_sem); |
| if (flags & MREMAP_FIXED) { |
| if (new_addr > 0xf0000000UL - new_len) |
| goto out_sem; |
| } else if (addr > 0xf0000000UL - new_len) { |
| unsigned long map_flags = 0; |
| struct file *file = NULL; |
| |
| ret = -ENOMEM; |
| if (!(flags & MREMAP_MAYMOVE)) |
| goto out_sem; |
| |
| vma = find_vma(current->mm, addr); |
| if (vma) { |
| if (vma->vm_flags & VM_SHARED) |
| map_flags |= MAP_SHARED; |
| file = vma->vm_file; |
| } |
| |
| /* MREMAP_FIXED checked above. */ |
| new_addr = get_unmapped_area(file, addr, new_len, |
| vma ? vma->vm_pgoff : 0, |
| map_flags); |
| ret = new_addr; |
| if (new_addr & ~PAGE_MASK) |
| goto out_sem; |
| flags |= MREMAP_FIXED; |
| } |
| ret = do_mremap(addr, old_len, new_len, flags, new_addr); |
| out_sem: |
| up_write(¤t->mm->mmap_sem); |
| out: |
| return ret; |
| } |
| |
| extern asmlinkage long sys_setpriority(int which, int who, int niceval); |
| |
| asmlinkage int sys_setpriority32(u32 which, u32 who, u32 niceval) |
| { |
| return sys_setpriority((int) which, |
| (int) who, |
| (int) niceval); |
| } |
| |
| struct __sysctl_args32 { |
| u32 name; |
| int nlen; |
| u32 oldval; |
| u32 oldlenp; |
| u32 newval; |
| u32 newlen; |
| u32 __unused[4]; |
| }; |
| |
| extern asmlinkage long sys32_sysctl(struct __sysctl_args32 *args) |
| { |
| #ifndef CONFIG_SYSCTL |
| return -ENOSYS; |
| #else |
| struct __sysctl_args32 tmp; |
| int error; |
| size_t oldlen, *oldlenp = NULL; |
| unsigned long addr = (((long)&args->__unused[0]) + 7) & ~7; |
| |
| if (copy_from_user(&tmp, args, sizeof(tmp))) |
| return -EFAULT; |
| |
| if (tmp.oldval && tmp.oldlenp) { |
| /* Duh, this is ugly and might not work if sysctl_args |
| is in read-only memory, but do_sysctl does indirectly |
| a lot of uaccess in both directions and we'd have to |
| basically copy the whole sysctl.c here, and |
| glibc's __sysctl uses rw memory for the structure |
| anyway. */ |
| if (get_user(oldlen, (u32 *)A(tmp.oldlenp)) || |
| put_user(oldlen, (size_t *)addr)) |
| return -EFAULT; |
| oldlenp = (size_t *)addr; |
| } |
| |
| lock_kernel(); |
| error = do_sysctl((int *)A(tmp.name), tmp.nlen, (void *)A(tmp.oldval), |
| oldlenp, (void *)A(tmp.newval), tmp.newlen); |
| unlock_kernel(); |
| if (oldlenp) { |
| if (!error) { |
| if (get_user(oldlen, (size_t *)addr) || |
| put_user(oldlen, (u32 *)A(tmp.oldlenp))) |
| error = -EFAULT; |
| } |
| copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)); |
| } |
| return error; |
| #endif |
| } |