| /* |
| * sys_parisc32.c: Conversion between 32bit and 64bit native syscalls. |
| * |
| * Copyright (C) 2000-2001 Hewlett Packard Company |
| * Copyright (C) 2000 John Marvin |
| * Copyright (C) 2001 Matthew Wilcox |
| * |
| * These routines maintain argument size conversion between 32bit and 64bit |
| * environment. Based heavily on sys_ia32.c and sys_sparc32.c. |
| */ |
| |
| #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/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> /* for setsockopt() */ |
| #include <linux/icmpv6.h> /* for setsockopt() */ |
| #include <linux/netfilter_ipv4/ip_queue.h> /* for setsockopt() */ |
| #include <linux/netfilter_ipv4/ip_tables.h> /* for setsockopt() */ |
| #include <linux/netfilter_ipv6/ip6_tables.h> /* for setsockopt() */ |
| #include <linux/highmem.h> |
| #include <linux/highuid.h> |
| #include <linux/mman.h> |
| |
| #include <asm/types.h> |
| #include <asm/uaccess.h> |
| #include <asm/semaphore.h> |
| |
| #include "sys32.h" |
| |
| #define A(__x) ((unsigned long)(__x)) |
| |
| |
| #undef DEBUG |
| |
| #ifdef DEBUG |
| #define DBG(x) printk x |
| #else |
| #define DBG(x) |
| #endif |
| |
| |
| /* |
| * count32() counts the number of arguments/envelopes. It is basically |
| * a copy of count() from fs/exec.c, except that it works |
| * with 32 bit argv and envp pointers. |
| */ |
| |
| 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_strings32() is basically a copy of copy_strings() from fs/exec.c |
| * except that it works with 32 bit argv and envp pointers. |
| */ |
| |
| |
| 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 > 0) { |
| char *kaddr; |
| int i, new, err; |
| struct page *page; |
| int offset, bytes_to_copy; |
| |
| offset = pos % PAGE_SIZE; |
| i = pos/PAGE_SIZE; |
| page = bprm->page[i]; |
| new = 0; |
| if (!page) { |
| page = alloc_page(GFP_HIGHUSER); |
| bprm->page[i] = page; |
| if (!page) |
| return -ENOMEM; |
| new = 1; |
| } |
| kaddr = (char *)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); |
| flush_dcache_page(page); |
| flush_page_to_ram(page); |
| kunmap(page); |
| |
| if (err) |
| return -EFAULT; |
| |
| pos += bytes_to_copy; |
| str += bytes_to_copy; |
| len -= bytes_to_copy; |
| } |
| } |
| return 0; |
| } |
| |
| /* |
| * do_execve32() is mostly a copy of do_execve(), with the exception |
| * that it processes 32 bit argv and envp pointers. |
| */ |
| |
| 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; |
| |
| file = open_exec(filename); |
| |
| retval = PTR_ERR(file); |
| if (IS_ERR(file)) |
| return retval; |
| |
| bprm.p = PAGE_SIZE*MAX_ARG_PAGES-sizeof(void *); |
| memset(bprm.page, 0, MAX_ARG_PAGES*sizeof(bprm.page[0])); |
| |
| DBG(("do_execve32(%s, %p, %p, %p)\n", filename, argv, envp, regs)); |
| |
| 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++) { |
| struct page * page = bprm.page[i]; |
| if (page) |
| __free_page(page); |
| } |
| |
| return retval; |
| } |
| |
| /* |
| * sys32_execve() executes a new program. |
| */ |
| |
| asmlinkage int sys32_execve(struct pt_regs *regs) |
| { |
| int error; |
| char *filename; |
| |
| DBG(("sys32_execve(%p) r26 = 0x%lx\n", regs, regs->gr[26])); |
| filename = getname((char *) regs->gr[26]); |
| error = PTR_ERR(filename); |
| if (IS_ERR(filename)) |
| goto out; |
| error = do_execve32(filename, (u32 *) regs->gr[25], |
| (u32 *) regs->gr[24], regs); |
| if (error == 0) |
| current->ptrace &= ~PT_DTRACE; |
| putname(filename); |
| out: |
| |
| return error; |
| } |
| |
| asmlinkage long sys32_unimplemented(int r26, int r25, int r24, int r23, |
| int r22, int r21, int r20) |
| { |
| printk(KERN_ERR "%s(%d): Unimplemented 32 on 64 syscall #%d!\n", |
| current->comm, current->pid, r20); |
| return -ENOSYS; |
| } |
| |
| /* 32-bit user apps use struct statfs which uses 'long's */ |
| struct statfs32 { |
| __s32 f_type; |
| __s32 f_bsize; |
| __s32 f_blocks; |
| __s32 f_bfree; |
| __s32 f_bavail; |
| __s32 f_files; |
| __s32 f_ffree; |
| __kernel_fsid_t f_fsid; |
| __s32 f_namelen; |
| __s32 f_spare[6]; |
| }; |
| |
| /* convert statfs struct to statfs32 struct and copy result to user */ |
| static unsigned long statfs32_to_user(struct statfs32 *ust32, struct statfs *st) |
| { |
| struct statfs32 st32; |
| #undef CP |
| #define CP(a) st32.a = st->a |
| CP(f_type); |
| CP(f_bsize); |
| CP(f_blocks); |
| CP(f_bfree); |
| CP(f_bavail); |
| CP(f_files); |
| CP(f_ffree); |
| CP(f_fsid); |
| CP(f_namelen); |
| return copy_to_user(ust32, &st32, sizeof st32); |
| } |
| |
| /* The following statfs calls are copies of code from linux/fs/open.c and |
| * should be checked against those from time to time */ |
| asmlinkage long sys32_statfs(const char * path, struct statfs32 * buf) |
| { |
| struct nameidata nd; |
| int error; |
| |
| error = user_path_walk(path, &nd); |
| if (!error) { |
| struct statfs tmp; |
| error = vfs_statfs(nd.dentry->d_inode->i_sb, &tmp); |
| if (!error && statfs32_to_user(buf, &tmp)) |
| error = -EFAULT; |
| path_release(&nd); |
| } |
| return error; |
| } |
| |
| asmlinkage long sys32_fstatfs(unsigned int fd, struct statfs32 * buf) |
| { |
| struct file * file; |
| struct statfs tmp; |
| int error; |
| |
| error = -EBADF; |
| file = fget(fd); |
| if (!file) |
| goto out; |
| error = vfs_statfs(file->f_dentry->d_inode->i_sb, &tmp); |
| if (!error && statfs32_to_user(buf, &tmp)) |
| error = -EFAULT; |
| fput(file); |
| out: |
| return error; |
| } |
| |
| /* These may not work without my local types changes, but I wanted the |
| * code available in case it's useful to others. -PB |
| */ |
| |
| /* from utime.h */ |
| struct utimbuf32 { |
| __kernel_time_t32 actime; |
| __kernel_time_t32 modtime; |
| }; |
| |
| asmlinkage long sys32_utime(char *filename, struct utimbuf32 *times) |
| { |
| struct utimbuf32 times32; |
| struct utimbuf times64; |
| extern long sys_utime(char *filename, struct utimbuf *times); |
| char *fname; |
| long ret; |
| |
| if (!times) |
| return sys_utime(filename, NULL); |
| |
| /* get the 32-bit struct from user space */ |
| if (copy_from_user(×32, times, sizeof times32)) |
| return -EFAULT; |
| |
| /* convert it into the 64-bit one */ |
| times64.actime = times32.actime; |
| times64.modtime = times32.modtime; |
| |
| /* grab the file name */ |
| fname = getname(filename); |
| |
| KERNEL_SYSCALL(ret, sys_utime, fname, ×64); |
| |
| /* free the file name */ |
| putname(fname); |
| |
| return ret; |
| } |
| |
| struct tms32 { |
| __kernel_clock_t32 tms_utime; |
| __kernel_clock_t32 tms_stime; |
| __kernel_clock_t32 tms_cutime; |
| __kernel_clock_t32 tms_cstime; |
| }; |
| |
| asmlinkage long sys32_times(struct tms32 *tbuf) |
| { |
| struct tms t; |
| long ret; |
| extern asmlinkage long sys_times(struct tms * tbuf); |
| int err; |
| |
| KERNEL_SYSCALL(ret, sys_times, tbuf ? &t : NULL); |
| 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; |
| } |
| |
| struct flock32 { |
| short l_type; |
| short l_whence; |
| __kernel_off_t32 l_start; |
| __kernel_off_t32 l_len; |
| __kernel_pid_t32 l_pid; |
| }; |
| |
| |
| 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; |
| long ret; |
| |
| if(get_flock(&f, (struct flock32 *)arg)) |
| return -EFAULT; |
| KERNEL_SYSCALL(ret, sys_fcntl, fd, cmd, (unsigned long)&f); |
| if (ret) return ret; |
| if (f.l_start >= 0x7fffffffUL || |
| f.l_len >= 0x7fffffffUL || |
| f.l_start + f.l_len >= 0x7fffffffUL) |
| return -EOVERFLOW; |
| if(put_flock(&f, (struct flock32 *)arg)) |
| return -EFAULT; |
| return 0; |
| } |
| default: |
| return sys_fcntl(fd, cmd, (unsigned long)arg); |
| } |
| } |
| |
| #ifdef CONFIG_SYSCTL |
| |
| struct __sysctl_args32 { |
| u32 name; |
| int nlen; |
| u32 oldval; |
| u32 oldlenp; |
| u32 newval; |
| u32 newlen; |
| u32 __unused[4]; |
| }; |
| |
| asmlinkage long sys32_sysctl(struct __sysctl_args32 *args) |
| { |
| struct __sysctl_args32 tmp; |
| int error; |
| unsigned int oldlen32; |
| size_t oldlen, *oldlenp = NULL; |
| unsigned long addr = (((long)&args->__unused[0]) + 7) & ~7; |
| extern int do_sysctl(int *name, int nlen, void *oldval, size_t *oldlenp, |
| void *newval, size_t newlen); |
| |
| DBG(("sysctl32(%p)\n", args)); |
| |
| 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. */ |
| /* a possibly better hack than this, which will avoid the |
| * problem if the struct is read only, is to push the |
| * 'oldlen' value out to the user's stack instead. -PB |
| */ |
| if (get_user(oldlen32, (u32 *)(u64)tmp.oldlenp)) |
| return -EFAULT; |
| oldlen = oldlen32; |
| if (put_user(oldlen, (size_t *)addr)) |
| return -EFAULT; |
| oldlenp = (size_t *)addr; |
| } |
| |
| lock_kernel(); |
| error = do_sysctl((int *)(u64)tmp.name, tmp.nlen, (void *)(u64)tmp.oldval, |
| oldlenp, (void *)(u64)tmp.newval, tmp.newlen); |
| unlock_kernel(); |
| if (oldlenp) { |
| if (!error) { |
| if (get_user(oldlen, (size_t *)addr)) { |
| error = -EFAULT; |
| } else { |
| oldlen32 = oldlen; |
| if (put_user(oldlen32, (u32 *)(u64)tmp.oldlenp)) |
| error = -EFAULT; |
| } |
| } |
| if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused))) |
| error = -EFAULT; |
| } |
| return error; |
| } |
| |
| #else /* CONFIG_SYSCTL */ |
| |
| asmlinkage long sys32_sysctl(struct __sysctl_args *args) |
| { |
| return -ENOSYS; |
| } |
| #endif /* CONFIG_SYSCTL */ |
| |
| struct timespec32 { |
| s32 tv_sec; |
| s32 tv_nsec; |
| }; |
| |
| static int |
| put_timespec32(struct timespec32 *u, struct timespec *t) |
| { |
| struct timespec32 t32; |
| t32.tv_sec = t->tv_sec; |
| t32.tv_nsec = t->tv_nsec; |
| return copy_to_user(u, &t32, sizeof t32); |
| } |
| |
| asmlinkage int sys32_nanosleep(struct timespec32 *rqtp, struct timespec32 *rmtp) |
| { |
| struct timespec t; |
| struct timespec32 t32; |
| int ret; |
| extern asmlinkage int sys_nanosleep(struct timespec *rqtp, struct timespec *rmtp); |
| |
| if (copy_from_user(&t32, rqtp, sizeof t32)) |
| return -EFAULT; |
| t.tv_sec = t32.tv_sec; |
| t.tv_nsec = t32.tv_nsec; |
| |
| DBG(("sys32_nanosleep({%d, %d})\n", t32.tv_sec, t32.tv_nsec)); |
| |
| KERNEL_SYSCALL(ret, sys_nanosleep, &t, rmtp ? &t : NULL); |
| if (rmtp && ret == -EINTR) { |
| if (put_timespec32(rmtp, &t)) |
| return -EFAULT; |
| } |
| return ret; |
| } |
| |
| asmlinkage long sys32_sched_rr_get_interval(pid_t pid, |
| struct timespec32 *interval) |
| { |
| struct timespec t; |
| int ret; |
| extern asmlinkage long sys_sched_rr_get_interval(pid_t pid, struct timespec *interval); |
| |
| KERNEL_SYSCALL(ret, sys_sched_rr_get_interval, pid, &t); |
| if (put_timespec32(interval, &t)) |
| return -EFAULT; |
| return ret; |
| } |
| |
| typedef __kernel_time_t32 time_t32; |
| |
| static int |
| put_timeval32(struct timeval32 *u, struct timeval *t) |
| { |
| struct timeval32 t32; |
| t32.tv_sec = t->tv_sec; |
| t32.tv_usec = t->tv_usec; |
| return copy_to_user(u, &t32, sizeof t32); |
| } |
| |
| static int |
| get_timeval32(struct timeval32 *u, struct timeval *t) |
| { |
| int err; |
| struct timeval32 t32; |
| |
| if ((err = copy_from_user(&t32, u, sizeof t32)) == 0) |
| { |
| t->tv_sec = t32.tv_sec; |
| t->tv_usec = t32.tv_usec; |
| } |
| return err; |
| } |
| |
| asmlinkage long sys32_time(time_t32 *tloc) |
| { |
| time_t now = CURRENT_TIME; |
| time_t32 now32 = now; |
| |
| if (tloc) |
| if (put_user(now32, tloc)) |
| now32 = -EFAULT; |
| |
| return now32; |
| } |
| |
| asmlinkage int |
| sys32_gettimeofday(struct timeval32 *tv, struct timezone *tz) |
| { |
| extern void do_gettimeofday(struct timeval *tv); |
| |
| if (tv) { |
| struct timeval ktv; |
| do_gettimeofday(&ktv); |
| if (put_timeval32(tv, &ktv)) |
| return -EFAULT; |
| } |
| if (tz) { |
| extern struct timezone sys_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; |
| extern int do_sys_settimeofday(struct timeval *tv, struct timezone *tz); |
| |
| if (tv) { |
| if (get_timeval32(tv, &ktv)) |
| return -EFAULT; |
| } |
| if (tz) { |
| if (copy_from_user(&ktz, tz, sizeof(ktz))) |
| return -EFAULT; |
| } |
| |
| return do_sys_settimeofday(tv ? &ktv : NULL, tz ? &ktz : NULL); |
| } |
| |
| struct itimerval32 { |
| struct timeval32 it_interval; /* timer interval */ |
| struct timeval32 it_value; /* current value */ |
| }; |
| |
| asmlinkage long sys32_getitimer(int which, struct itimerval32 *ov32) |
| { |
| int error = -EFAULT; |
| struct itimerval get_buffer; |
| extern int do_getitimer(int which, struct itimerval *value); |
| |
| if (ov32) { |
| error = do_getitimer(which, &get_buffer); |
| if (!error) { |
| struct itimerval32 gb32; |
| gb32.it_interval.tv_sec = get_buffer.it_interval.tv_sec; |
| gb32.it_interval.tv_usec = get_buffer.it_interval.tv_usec; |
| gb32.it_value.tv_sec = get_buffer.it_value.tv_sec; |
| gb32.it_value.tv_usec = get_buffer.it_value.tv_usec; |
| if (copy_to_user(ov32, &gb32, sizeof(gb32))) |
| error = -EFAULT; |
| } |
| } |
| return error; |
| } |
| |
| asmlinkage long sys32_setitimer(int which, struct itimerval32 *v32, |
| struct itimerval32 *ov32) |
| { |
| struct itimerval set_buffer, get_buffer; |
| struct itimerval32 sb32, gb32; |
| extern int do_setitimer(int which, struct itimerval *value, struct itimerval *ov32); |
| int error; |
| |
| if (v32) { |
| if(copy_from_user(&sb32, v32, sizeof(sb32))) |
| return -EFAULT; |
| |
| set_buffer.it_interval.tv_sec = sb32.it_interval.tv_sec; |
| set_buffer.it_interval.tv_usec = sb32.it_interval.tv_usec; |
| set_buffer.it_value.tv_sec = sb32.it_value.tv_sec; |
| set_buffer.it_value.tv_usec = sb32.it_value.tv_usec; |
| } else |
| memset((char *) &set_buffer, 0, sizeof(set_buffer)); |
| |
| error = do_setitimer(which, &set_buffer, ov32 ? &get_buffer : 0); |
| if (error || !ov32) |
| return error; |
| |
| gb32.it_interval.tv_sec = get_buffer.it_interval.tv_sec; |
| gb32.it_interval.tv_usec = get_buffer.it_interval.tv_usec; |
| gb32.it_value.tv_sec = get_buffer.it_value.tv_sec; |
| gb32.it_value.tv_usec = get_buffer.it_value.tv_usec; |
| if (copy_to_user(ov32, &gb32, sizeof(gb32))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| struct rusage32 { |
| struct timeval32 ru_utime; |
| struct timeval32 ru_stime; |
| int ru_maxrss; |
| int ru_ixrss; |
| int ru_idrss; |
| int ru_isrss; |
| int ru_minflt; |
| int ru_majflt; |
| int ru_nswap; |
| int ru_inblock; |
| int ru_oublock; |
| int ru_msgsnd; |
| int ru_msgrcv; |
| int ru_nsignals; |
| int ru_nvcsw; |
| int ru_nivcsw; |
| }; |
| |
| static int |
| put_rusage32(struct rusage32 *ru32p, struct rusage *r) |
| { |
| struct rusage32 r32; |
| #undef CP |
| #define CP(t) r32.t = r->t; |
| CP(ru_utime.tv_sec); CP(ru_utime.tv_usec); |
| CP(ru_stime.tv_sec); CP(ru_stime.tv_usec); |
| CP(ru_maxrss); |
| CP(ru_ixrss); |
| CP(ru_idrss); |
| CP(ru_isrss); |
| CP(ru_minflt); |
| CP(ru_majflt); |
| CP(ru_nswap); |
| CP(ru_inblock); |
| CP(ru_oublock); |
| CP(ru_msgsnd); |
| CP(ru_msgrcv); |
| CP(ru_nsignals); |
| CP(ru_nvcsw); |
| CP(ru_nivcsw); |
| return copy_to_user(ru32p, &r32, sizeof r32); |
| } |
| |
| asmlinkage int |
| sys32_getrusage(int who, struct rusage32 *ru) |
| { |
| struct rusage r; |
| int ret; |
| extern asmlinkage int sys_getrusage(int who, struct rusage *ru); |
| |
| KERNEL_SYSCALL(ret, sys_getrusage, who, &r); |
| if (put_rusage32(ru, &r)) return -EFAULT; |
| return ret; |
| } |
| |
| 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; |
| |
| KERNEL_SYSCALL(ret, sys_wait4, pid, stat_addr ? &status : NULL, options, &r); |
| if (put_rusage32(ru, &r)) return -EFAULT; |
| if (stat_addr && put_user(status, stat_addr)) |
| return -EFAULT; |
| return ret; |
| } |
| } |
| |
| struct stat32 { |
| __kernel_dev_t32 st_dev; /* dev_t is 32 bits on parisc */ |
| __kernel_ino_t32 st_ino; /* 32 bits */ |
| __kernel_mode_t32 st_mode; /* 16 bits */ |
| __kernel_nlink_t32 st_nlink; /* 16 bits */ |
| unsigned short st_reserved1; /* old st_uid */ |
| unsigned short st_reserved2; /* old st_gid */ |
| __kernel_dev_t32 st_rdev; |
| __kernel_off_t32 st_size; |
| __kernel_time_t32 st_atime; |
| unsigned int st_spare1; |
| __kernel_time_t32 st_mtime; |
| unsigned int st_spare2; |
| __kernel_time_t32 st_ctime; |
| unsigned int st_spare3; |
| int st_blksize; |
| int st_blocks; |
| unsigned int __unused1; /* ACL stuff */ |
| __kernel_dev_t32 __unused2; /* network */ |
| __kernel_ino_t32 __unused3; /* network */ |
| unsigned int __unused4; /* cnodes */ |
| unsigned short __unused5; /* netsite */ |
| short st_fstype; |
| __kernel_dev_t32 st_realdev; |
| unsigned short st_basemode; |
| unsigned short st_spareshort; |
| __kernel_uid_t32 st_uid; |
| __kernel_gid_t32 st_gid; |
| unsigned int st_spare4[3]; |
| }; |
| |
| /* |
| * Revalidate the inode. This is required for proper NFS attribute caching. |
| */ |
| 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; |
| } |
| |
| |
| static int cp_new_stat32(struct inode *inode, struct stat32 *statbuf) |
| { |
| struct stat32 tmp; |
| unsigned int blocks, indirect; |
| |
| memset(&tmp, 0, sizeof(tmp)); |
| tmp.st_dev = kdev_t_to_nr(inode->i_dev); |
| tmp.st_ino = inode->i_ino; |
| tmp.st_mode = inode->i_mode; |
| tmp.st_nlink = inode->i_nlink; |
| SET_STAT_UID(tmp, inode->i_uid); |
| SET_STAT_GID(tmp, inode->i_gid); |
| tmp.st_rdev = kdev_t_to_nr(inode->i_rdev); |
| #if BITS_PER_LONG == 32 |
| if (inode->i_size > 0x7fffffff) |
| return -EOVERFLOW; |
| #endif |
| tmp.st_size = inode->i_size; |
| tmp.st_atime = inode->i_atime; |
| tmp.st_mtime = inode->i_mtime; |
| tmp.st_ctime = inode->i_ctime; |
| /* |
| * st_blocks and st_blksize are approximated with a simple algorithm if |
| * they aren't supported directly by the filesystem. The minix and msdos |
| * filesystems don't keep track of blocks, so they would either have to |
| * be counted explicitly (by delving into the file itself), or by using |
| * this simple algorithm to get a reasonable (although not 100% accurate) |
| * value. |
| */ |
| |
| /* |
| * Use minix fs values for the number of direct and indirect blocks. The |
| * count is now exact for the minix fs except that it counts zero blocks. |
| * Everything is in units of BLOCK_SIZE until the assignment to |
| * tmp.st_blksize. |
| */ |
| #define D_B 7 |
| #define I_B (BLOCK_SIZE / sizeof(unsigned short)) |
| |
| if (!inode->i_blksize) { |
| blocks = (tmp.st_size + BLOCK_SIZE - 1) / BLOCK_SIZE; |
| if (blocks > D_B) { |
| indirect = (blocks - D_B + I_B - 1) / I_B; |
| blocks += indirect; |
| if (indirect > 1) { |
| indirect = (indirect - 1 + I_B - 1) / I_B; |
| blocks += indirect; |
| if (indirect > 1) |
| blocks++; |
| } |
| } |
| tmp.st_blocks = (BLOCK_SIZE / 512) * blocks; |
| tmp.st_blksize = BLOCK_SIZE; |
| } else { |
| tmp.st_blocks = inode->i_blocks; |
| tmp.st_blksize = inode->i_blksize; |
| } |
| return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0; |
| } |
| |
| asmlinkage long 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 long 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 long 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; |
| } |
| |
| struct linux32_dirent { |
| u32 d_ino; |
| __kernel_off_t32 d_off; |
| u16 d_reclen; |
| char d_name[1]; |
| }; |
| |
| struct old_linux32_dirent { |
| u32 d_ino; |
| u32 d_offset; |
| u16 d_namlen; |
| char d_name[1]; |
| }; |
| |
| struct getdents32_callback { |
| struct linux32_dirent * current_dir; |
| struct linux32_dirent * previous; |
| int count; |
| int error; |
| }; |
| |
| struct readdir32_callback { |
| struct old_linux32_dirent * dirent; |
| int count; |
| }; |
| |
| #define ROUND_UP(x,a) ((__typeof__(x))(((unsigned long)(x) + ((a) - 1)) & ~((a) - 1))) |
| #define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de))) |
| static int |
| filldir32 (void *__buf, const char *name, int namlen, loff_t offset, ino_t ino, |
| unsigned int d_type) |
| { |
| struct linux32_dirent * dirent; |
| struct getdents32_callback * buf = (struct getdents32_callback *) __buf; |
| int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1, 4); |
| |
| 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); |
| ((char *) dirent) += reclen; |
| buf->current_dir = dirent; |
| buf->count -= reclen; |
| return 0; |
| } |
| |
| asmlinkage long |
| sys32_getdents (unsigned int fd, void * dirent, unsigned int count) |
| { |
| struct file * file; |
| struct linux32_dirent * lastdirent; |
| struct getdents32_callback buf; |
| int error; |
| |
| error = -EBADF; |
| file = fget(fd); |
| if (!file) |
| goto out; |
| |
| buf.current_dir = (struct linux32_dirent *) dirent; |
| buf.previous = NULL; |
| buf.count = count; |
| buf.error = 0; |
| |
| error = vfs_readdir(file, filldir32, &buf); |
| if (error < 0) |
| goto out_putf; |
| error = buf.error; |
| lastdirent = buf.previous; |
| if (lastdirent) { |
| put_user(file->f_pos, &lastdirent->d_off); |
| error = count - buf.count; |
| } |
| |
| out_putf: |
| fput(file); |
| out: |
| return error; |
| } |
| |
| static int |
| fillonedir32 (void * __buf, const char * name, int namlen, loff_t offset, ino_t ino, |
| unsigned int d_type) |
| { |
| struct readdir32_callback * buf = (struct readdir32_callback *) __buf; |
| struct old_linux32_dirent * 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 long |
| sys32_readdir (unsigned int fd, void * dirent, unsigned int count) |
| { |
| int error; |
| struct file * file; |
| struct readdir32_callback buf; |
| |
| error = -EBADF; |
| file = fget(fd); |
| if (!file) |
| goto out; |
| |
| buf.count = 0; |
| buf.dirent = dirent; |
| |
| error = vfs_readdir(file, fillonedir32, &buf); |
| if (error >= 0) |
| error = buf.count; |
| fput(file); |
| out: |
| return error; |
| } |
| |
| struct rlimit32 { |
| __u32 rlim_cur; |
| __u32 rlim_max; |
| }; |
| |
| #define RLIM32_INFINITY 0xffffffff |
| |
| asmlinkage long sys32_getrlimit(unsigned int resource, struct rlimit32 *rlim) |
| { |
| struct rlimit32 rlim32; |
| struct rlimit *rlimip; |
| |
| if (resource >= RLIM_NLIMITS) |
| return -EINVAL; |
| rlimip = current->rlim + resource; |
| if (rlimip->rlim_cur >= RLIM32_INFINITY) { |
| rlim32.rlim_cur = RLIM32_INFINITY; |
| } else { |
| rlim32.rlim_cur = rlimip->rlim_cur; |
| } |
| if (rlimip->rlim_max >= RLIM32_INFINITY) { |
| rlim32.rlim_max = RLIM32_INFINITY; |
| } else { |
| rlim32.rlim_max = rlimip->rlim_max; |
| } |
| return copy_to_user(rlim, &rlim32, sizeof (struct rlimit32)); |
| } |
| |
| asmlinkage long sys32_setrlimit(unsigned int resource, struct rlimit32 *rlim) |
| { |
| struct rlimit32 rlim32; |
| struct rlimit new_rlim, *old_rlim; |
| |
| if (resource >= RLIM_NLIMITS) |
| return -EINVAL; |
| if (copy_from_user(&rlim32, rlim, sizeof(rlim))) |
| return -EFAULT; |
| if (rlim32.rlim_cur == RLIM32_INFINITY) { |
| new_rlim.rlim_cur = RLIM_INFINITY; |
| } else { |
| new_rlim.rlim_cur = rlim32.rlim_cur; |
| } |
| if (rlim32.rlim_max == RLIM32_INFINITY) { |
| new_rlim.rlim_max = RLIM_INFINITY; |
| } else { |
| new_rlim.rlim_max = rlim32.rlim_max; |
| } |
| |
| old_rlim = current->rlim + resource; |
| if (((new_rlim.rlim_cur > old_rlim->rlim_max) || |
| (new_rlim.rlim_max > old_rlim->rlim_max)) && |
| !capable(CAP_SYS_RESOURCE)) |
| return -EPERM; |
| if (resource == RLIMIT_NOFILE) { |
| if (new_rlim.rlim_cur > NR_OPEN || new_rlim.rlim_max > NR_OPEN) |
| return -EPERM; |
| } |
| if (resource == RLIMIT_STACK) { |
| if (new_rlim.rlim_max > 1024 * 1024 * 1024) { |
| new_rlim.rlim_max = 1024 * 1024 * 1024; |
| } |
| new_rlim.rlim_max = PAGE_ALIGN(new_rlim.rlim_max); |
| } |
| |
| *old_rlim = new_rlim; |
| return 0; |
| } |
| |
| 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) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| is_smb = !strcmp((char *)type_page, SMBFS_NAME); |
| is_ncp = !strcmp((char *)type_page, NCPFS_NAME); |
| |
| err = copy_mount_stuff_to_kernel((const void *)(unsigned long)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) |
| panic("NCP mounts not yet supported 32/64 parisc"); |
| /* do_ncp_super_data_conv((void *)data_page); */ |
| else { |
| panic("SMB mounts not yet supported 32/64 parisc"); |
| /* 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; |
| } |
| |
| |
| #ifdef CONFIG_MODULES |
| |
| 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, __kernel_size_t32 *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, ret); |
| break; |
| case QM_DEPS: |
| err = qm_deps(mod, buf, bufsize, ret); |
| break; |
| case QM_REFS: |
| err = qm_refs(mod, buf, bufsize, ret); |
| break; |
| case QM_SYMBOLS: |
| err = qm_symbols(mod, buf, bufsize, ret); |
| break; |
| case QM_INFO: |
| err = qm_info(mod, buf, bufsize, 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 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 */ |
| |
| /* readv/writev stolen from mips64 */ |
| struct iovec32 { unsigned int iov_base; int iov_len; }; |
| |
| typedef ssize_t (*IO_fn_t)(struct file *, char *, size_t, loff_t *); |
| |
| static long |
| do_readv_writev32(int type, struct file *file, const struct iovec32 *vector, |
| u32 count) |
| { |
| unsigned long tot_len; |
| struct iovec iovstack[UIO_FASTIOV]; |
| struct iovec *iov=iovstack, *ivp; |
| struct inode *inode; |
| long retval, i; |
| IO_fn_t fn; |
| |
| /* First get the "struct iovec" from user memory and |
| * verify all the pointers |
| */ |
| if (!count) |
| return 0; |
| if(verify_area(VERIFY_READ, vector, sizeof(struct iovec32)*count)) |
| return -EFAULT; |
| if (count > UIO_MAXIOV) |
| return -EINVAL; |
| if (count > UIO_FASTIOV) { |
| iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL); |
| if (!iov) |
| return -ENOMEM; |
| } |
| |
| tot_len = 0; |
| i = count; |
| ivp = iov; |
| while (i > 0) { |
| u32 len; |
| u32 buf; |
| |
| __get_user(len, &vector->iov_len); |
| __get_user(buf, &vector->iov_base); |
| tot_len += len; |
| 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) { |
| if (iov != iovstack) |
| kfree(iov); |
| return retval; |
| } |
| |
| /* Then do the actual IO. Note that sockets need to be handled |
| * specially as they have atomicity guarantees and can handle |
| * iovec's natively |
| */ |
| if (inode->i_sock) { |
| int err; |
| err = sock_readv_writev(type, inode, file, iov, count, tot_len); |
| if (iov != iovstack) |
| kfree(iov); |
| return err; |
| } |
| |
| if (!file->f_op) { |
| if (iov != iovstack) |
| kfree(iov); |
| return -EINVAL; |
| } |
| /* VERIFY_WRITE actually means a read, as we write to user space */ |
| fn = file->f_op->read; |
| if (type == VERIFY_READ) |
| fn = (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) |
| break; |
| retval = nr; |
| break; |
| } |
| retval += nr; |
| if (nr != len) |
| break; |
| } |
| if (iov != iovstack) |
| kfree(iov); |
| |
| return retval; |
| } |
| |
| asmlinkage long |
| sys32_readv(int fd, struct iovec32 *vector, u32 count) |
| { |
| struct file *file; |
| ssize_t ret; |
| |
| 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; |
| ssize_t ret; |
| |
| 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; |
| } |
| |
| /********** Borrowed from sparc64 -- hardly reviewed, not tested *****/ |
| #include <net/scm.h> |
| /* 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; |
| 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_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_icmpv6_filter(int fd, int level, int optname, |
| char *optval, int optlen) |
| { |
| struct icmp6_filter kfilter; |
| mm_segment_t old_fs; |
| int ret, i; |
| |
| if (copy_from_user(&kfilter, optval, sizeof(kfilter))) |
| return -EFAULT; |
| |
| |
| for (i = 0; i < 8; i += 2) { |
| u32 tmp = kfilter.data[i]; |
| |
| kfilter.data[i] = kfilter.data[i + 1]; |
| kfilter.data[i + 1] = tmp; |
| } |
| |
| old_fs = get_fs(); |
| set_fs(KERNEL_DS); |
| ret = sys_setsockopt(fd, level, optname, |
| (char *) &kfilter, sizeof(kfilter)); |
| set_fs(old_fs); |
| |
| return ret; |
| } |
| |
| |
| static int do_ipv4_set_replace(int fd, int level, int optname, |
| char *optval, int optlen) |
| #if 1 |
| /* Fields happen to be padded such that this works. |
| ** Don't need to change iptables.h:struct ipt_replace |
| */ |
| { |
| struct ipt_replace *repl = (struct ipt_replace *) optval; |
| unsigned long ptr64; |
| unsigned int ptr32; |
| int ret; |
| |
| if (copy_from_user(&ptr32, &repl->counters, sizeof(ptr32))) |
| return -EFAULT; |
| ptr64 = (unsigned long) ptr32; |
| if (copy_to_user(&repl->counters, &ptr64, sizeof(ptr64))) |
| return -EFAULT; |
| |
| ret = sys_setsockopt(fd, level, optname, (char *) optval, optlen); |
| |
| /* Restore 32-bit ptr */ |
| if (copy_to_user(&repl->counters, &ptr32, sizeof(ptr32))) |
| return -EFAULT; |
| |
| return ret; |
| } |
| #else |
| /* This version tries to "do it right". ie allocate kernel buffers for |
| ** everything and copy data in/out. Way too complicated. |
| ** NOT TESTED for correctness! |
| */ |
| { |
| struct ipt_replace *kern_repl; |
| struct ipt_counters *kern_counters; |
| unsigned int user_counters; |
| mm_segment_t old_fs; |
| int ret = 0; |
| |
| kern_repl = (struct ipt_replace *) kmalloc(optlen+8, GFP_KERNEL); |
| if (!kern_repl) |
| return -ENOMEM; |
| |
| if (copy_from_user(kern_repl, optval, optlen)) { |
| ret = -EFAULT; |
| goto err02; |
| } |
| |
| /* 32-bit ptr is in the MSB's */ |
| user_counters = (unsigned int) (((unsigned long) kern_repl->counters) >> 32); |
| /* |
| ** We are going to set_fs() to kernel space - and thus need |
| ** "relocate" the counters buffer to the kernel space. |
| */ |
| kern_counters = (struct ipt_counters *) kmalloc(kern_repl->num_counters * sizeof(struct ipt_counters), GFP_KERNEL); |
| if (!user_counters) { |
| ret = -ENOMEM; |
| goto err02; |
| } |
| |
| if (copy_from_user(kern_counters, (char *) user_counters, optlen)) { |
| ret = -EFAULT; |
| goto err01; |
| } |
| |
| /* We can update the kernel ptr now that we have the data. */ |
| kern_repl->counters = kern_counters; |
| |
| old_fs = get_fs(); |
| set_fs(KERNEL_DS); |
| |
| ret = sys_setsockopt(fd, level, optname, (char *) optval, optlen); |
| |
| set_fs(old_fs); |
| |
| /* Copy counters back out to user space */ |
| if (copy_to_user((char *) user_counters, kern_counters, |
| kern_repl->num_counters * sizeof(struct ipt_counters))) |
| { |
| ret = -EFAULT; |
| goto err01; |
| } |
| |
| /* restore counters so userspace can consume it */ |
| kern_repl->counters = NULL; |
| (unsigned int) kern_repl->counters = user_counters; |
| |
| /* Copy repl back out to user space */ |
| if (copy_to_user(optval, kern_repl, optlen)) |
| { |
| ret = -EFAULT; |
| } |
| |
| err01: |
| kfree(kern_counters); |
| err02: |
| kfree(kern_repl); |
| return ret; |
| } |
| #endif |
| |
| |
| asmlinkage int sys32_setsockopt(int fd, int level, int optname, |
| char *optval, int optlen) |
| { |
| if (optname == SO_ATTACH_FILTER) |
| return do_set_attach_filter(fd, level, optname, optval, optlen); |
| |
| if (level == SOL_ICMPV6 && optname == ICMPV6_FILTER) |
| return do_set_icmpv6_filter(fd, level, optname, optval, optlen); |
| |
| /* |
| ** Beware: IPT_SO_SET_REPLACE == IP6T_SO_SET_REPLACE |
| */ |
| if (level == IPPROTO_IP && optname == IPT_SO_SET_REPLACE) |
| return do_ipv4_set_replace(fd, level, optname, optval, optlen); |
| |
| if (level == IPPROTO_IPV6 && optname == IP6T_SO_SET_REPLACE) |
| #if 0 |
| /* FIXME: I don't (yet) use IPV6. -ggg */ |
| return do_ipv6_set_replace(fd, level, optname, optval, optlen); |
| #else |
| { |
| BUG(); |
| return -ENXIO; |
| } |
| #endif |
| |
| return sys_setsockopt(fd, level, optname, optval, optlen); |
| } |
| |
| |
| /*** copied from mips64 ***/ |
| /* |
| * 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, u32 *ufdset, unsigned long *fdset) |
| { |
| n = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32)); |
| 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; |
| n = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32)); |
| |
| 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); |
| } |
| |
| /*** This is a virtual copy of sys_select from fs/select.c and probably |
| *** should be compared to it from time to time |
| ***/ |
| static inline void *select_bits_alloc(int size) |
| { |
| return kmalloc(6 * size, GFP_KERNEL); |
| } |
| |
| static inline void select_bits_free(void *bits, int size) |
| { |
| kfree(bits); |
| } |
| |
| /* |
| * We can actually return ERESTARTSYS instead of EINTR, but I'd |
| * like to be certain this leads to no problems. So I return |
| * EINTR just for safety. |
| * |
| * Update: ERESTARTSYS breaks at least the xview clock binary, so |
| * I'm trying ERESTARTNOHAND which restart only when you want to. |
| */ |
| #define MAX_SELECT_SECONDS \ |
| ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1) |
| #define DIVIDE_ROUND_UP(x,y) (((x)+(y)-1)/(y)) |
| |
| asmlinkage long |
| sys32_select(int n, u32 *inp, u32 *outp, u32 *exp, struct timeval32 *tvp) |
| { |
| fd_set_bits fds; |
| char *bits; |
| long timeout; |
| int ret, size, err; |
| |
| timeout = MAX_SCHEDULE_TIMEOUT; |
| if (tvp) { |
| struct timeval32 tv32; |
| time_t sec, usec; |
| |
| if ((ret = copy_from_user(&tv32, tvp, sizeof tv32))) |
| goto out_nofds; |
| |
| sec = tv32.tv_sec; |
| usec = tv32.tv_usec; |
| |
| ret = -EINVAL; |
| if (sec < 0 || usec < 0) |
| goto out_nofds; |
| |
| if ((unsigned long) sec < MAX_SELECT_SECONDS) { |
| timeout = DIVIDE_ROUND_UP(usec, 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 = select_bits_alloc(size); |
| 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); |
| |
| if ((ret = get_fd_set32(n, inp, fds.in)) || |
| (ret = get_fd_set32(n, outp, fds.out)) || |
| (ret = get_fd_set32(n, exp, fds.ex))) |
| 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); |
| } |
| err = put_user(sec, &tvp->tv_sec); |
| err |= __put_user(usec, &tvp->tv_usec); |
| if (err) |
| ret = -EFAULT; |
| } |
| |
| if (ret < 0) |
| goto out; |
| if (!ret) { |
| ret = -ERESTARTNOHAND; |
| if (signal_pending(current)) |
| goto out; |
| ret = 0; |
| } |
| |
| set_fd_set32(n, inp, fds.res_in); |
| set_fd_set32(n, outp, fds.res_out); |
| set_fd_set32(n, exp, fds.res_ex); |
| |
| out: |
| select_bits_free(bits, size); |
| out_nofds: |
| return ret; |
| } |
| |
| struct msgbuf32 { |
| int mtype; |
| char mtext[1]; |
| }; |
| |
| asmlinkage long sys32_msgsnd(int msqid, |
| struct msgbuf32 *umsgp32, |
| size_t msgsz, int msgflg) |
| { |
| struct msgbuf *mb; |
| struct msgbuf32 mb32; |
| int err; |
| |
| if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL) |
| return -ENOMEM; |
| |
| err = get_user(mb32.mtype, &umsgp32->mtype); |
| mb->mtype = mb32.mtype; |
| err |= copy_from_user(mb->mtext, &umsgp32->mtext, msgsz); |
| |
| if (err) |
| err = -EFAULT; |
| else |
| KERNEL_SYSCALL(err, sys_msgsnd, msqid, mb, msgsz, msgflg); |
| |
| kfree(mb); |
| return err; |
| } |
| |
| asmlinkage long sys32_msgrcv(int msqid, |
| struct msgbuf32 *umsgp32, |
| size_t msgsz, long msgtyp, int msgflg) |
| { |
| struct msgbuf *mb; |
| struct msgbuf32 mb32; |
| int err, len; |
| |
| if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL) |
| return -ENOMEM; |
| |
| KERNEL_SYSCALL(err, sys_msgrcv, msqid, mb, msgsz, msgtyp, msgflg); |
| |
| if (err >= 0) { |
| len = err; |
| mb32.mtype = mb->mtype; |
| err = put_user(mb32.mtype, &umsgp32->mtype); |
| err |= copy_to_user(&umsgp32->mtext, mb->mtext, len); |
| if (err) |
| err = -EFAULT; |
| else |
| err = len; |
| } |
| |
| kfree(mb); |
| return err; |
| } |
| |
| /* LFS */ |
| |
| extern asmlinkage long sys_truncate(const char *, loff_t); |
| extern asmlinkage long sys_ftruncate(unsigned int, loff_t); |
| extern asmlinkage long sys_fcntl(unsigned int, unsigned int, unsigned long); |
| extern asmlinkage ssize_t sys_pread(unsigned int, char *, size_t, loff_t); |
| extern asmlinkage ssize_t sys_pwrite(unsigned int, char *, size_t, loff_t); |
| |
| asmlinkage long sys32_truncate64(const char * path, unsigned int high, unsigned int low) |
| { |
| return sys_truncate(path, (loff_t)high << 32 | low); |
| } |
| |
| asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned int high, unsigned int low) |
| { |
| return sys_ftruncate(fd, (loff_t)high << 32 | low); |
| } |
| |
| 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); |
| } |
| |
| asmlinkage int sys32_pread(int fd, void *buf, size_t count, unsigned int high, unsigned int low) |
| { |
| return sys_pread(fd, buf, count, (loff_t)high << 32 | low); |
| } |
| |
| asmlinkage int sys32_pwrite(int fd, void *buf, size_t count, unsigned int high, unsigned int low) |
| { |
| return sys_pwrite(fd, buf, count, (loff_t)high << 32 | low); |
| } |
| |
| /* EXPORT/UNEXPORT */ |
| struct nfsctl_export32 { |
| char ex_client[NFSCLNT_IDMAX+1]; |
| char ex_path[NFS_MAXPATHLEN+1]; |
| __kernel_dev_t ex_dev; |
| __kernel_ino_t32 ex_ino; |
| int ex_flags; |
| __kernel_uid_t ex_anon_uid; |
| __kernel_gid_t ex_anon_gid; |
| }; |
| |
| /* GETFH */ |
| struct nfsctl_fhparm32 { |
| struct sockaddr gf_addr; |
| __kernel_dev_t gf_dev; |
| __kernel_ino_t32 gf_ino; |
| int gf_version; |
| }; |
| |
| /* UGIDUPDATE */ |
| struct nfsctl_uidmap32 { |
| __kernel_caddr_t32 ug_ident; |
| __kernel_uid_t ug_uidbase; |
| int ug_uidlen; |
| __kernel_caddr_t32 ug_udimap; |
| __kernel_gid_t ug_gidbase; |
| int ug_gidlen; |
| __kernel_caddr_t32 ug_gdimap; |
| }; |
| |
| struct nfsctl_arg32 { |
| int ca_version; /* safeguard */ |
| /* wide kernel places this union on 8-byte boundary, narrow on 4 */ |
| union { |
| struct nfsctl_svc u_svc; |
| struct nfsctl_client u_client; |
| struct nfsctl_export32 u_export; |
| struct nfsctl_uidmap32 u_umap; |
| struct nfsctl_fhparm32 u_getfh; |
| struct nfsctl_fdparm u_getfd; |
| struct nfsctl_fsparm u_getfs; |
| } u; |
| }; |
| |
| asmlinkage int sys32_nfsservctl(int cmd, void *argp, void *resp) |
| { |
| int ret, tmp; |
| struct nfsctl_arg32 n32; |
| struct nfsctl_arg n; |
| |
| ret = copy_from_user(&n, argp, sizeof n.ca_version); |
| if (ret != 0) |
| return ret; |
| |
| /* adjust argp to point at the union inside the user's n32 struct */ |
| tmp = (unsigned long)&n32.u - (unsigned long)&n32; |
| argp = (void *)((unsigned long)argp + tmp); |
| switch(cmd) { |
| case NFSCTL_SVC: |
| ret = copy_from_user(&n.u, argp, sizeof n.u.u_svc); |
| break; |
| |
| case NFSCTL_ADDCLIENT: |
| case NFSCTL_DELCLIENT: |
| ret = copy_from_user(&n.u, argp, sizeof n.u.u_client); |
| break; |
| |
| case NFSCTL_GETFD: |
| ret = copy_from_user(&n.u, argp, sizeof n.u.u_getfd); |
| break; |
| |
| case NFSCTL_GETFS: |
| ret = copy_from_user(&n.u, argp, sizeof n.u.u_getfs); |
| break; |
| |
| case NFSCTL_GETFH: /* nfsctl_fhparm */ |
| ret = copy_from_user(&n32.u, argp, sizeof n32.u.u_getfh); |
| #undef CP |
| #define CP(x) n.u.u_getfh.gf_##x = n32.u.u_getfh.gf_##x |
| CP(addr); |
| CP(dev); |
| CP(ino); |
| CP(version); |
| break; |
| |
| case NFSCTL_UGIDUPDATE: /* nfsctl_uidmap */ |
| ret = copy_from_user(&n32.u, argp, sizeof n32.u.u_umap); |
| #undef CP |
| #define CP(x) n.u.u_umap.ug_##x = n32.u.u_umap.ug_##x |
| n.u.u_umap.ug_ident = (char *)(u_long)n32.u.u_umap.ug_ident; |
| CP(uidbase); |
| CP(uidlen); |
| n.u.u_umap.ug_udimap = (__kernel_uid_t *)(u_long)n32.u.u_umap.ug_udimap; |
| CP(gidbase); |
| CP(gidlen); |
| n.u.u_umap.ug_gdimap = (__kernel_gid_t *)(u_long)n32.u.u_umap.ug_gdimap; |
| break; |
| |
| case NFSCTL_UNEXPORT: /* nfsctl_export */ |
| case NFSCTL_EXPORT: /* nfsctl_export */ |
| ret = copy_from_user(&n32.u, argp, sizeof n32.u.u_export); |
| #undef CP |
| #define CP(x) n.u.u_export.ex_##x = n32.u.u_export.ex_##x |
| memcpy(n.u.u_export.ex_client, n32.u.u_export.ex_client, sizeof n32.u.u_export.ex_client); |
| memcpy(n.u.u_export.ex_path, n32.u.u_export.ex_path, sizeof n32.u.u_export.ex_path); |
| CP(dev); |
| CP(ino); |
| CP(flags); |
| CP(anon_uid); |
| CP(anon_gid); |
| break; |
| |
| default: |
| BUG(); /* new cmd values to be translated... */ |
| ret = -EINVAL; |
| break; |
| } |
| |
| if (ret == 0) { |
| unsigned char rbuf[NFS_FHSIZE + sizeof (struct knfsd_fh)]; |
| KERNEL_SYSCALL(ret, sys_nfsservctl, cmd, &n, &rbuf); |
| if (cmd == NFSCTL_GETFH || cmd == NFSCTL_GETFD) { |
| ret = copy_to_user(resp, rbuf, NFS_FHSIZE); |
| } else if (cmd == NFSCTL_GETFS) { |
| ret = copy_to_user(resp, rbuf, sizeof (struct knfsd_fh)); |
| } |
| } |
| |
| return ret; |
| } |
| |
| #include <linux/quota.h> |
| |
| struct 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; |
| }; |
| |
| |
| asmlinkage int sys32_quotactl(int cmd, const char *special, int id, unsigned long addr) |
| { |
| extern int sys_quotactl(int cmd, const char *special, int id, caddr_t addr); |
| int cmds = cmd >> SUBCMDSHIFT; |
| int err; |
| struct dqblk d; |
| char *spec; |
| |
| switch (cmds) { |
| case Q_GETQUOTA: |
| break; |
| case Q_SETQUOTA: |
| case Q_SETUSE: |
| case Q_SETQLIM: |
| if (copy_from_user (&d, (struct dqblk32 *)addr, |
| sizeof (struct dqblk32))) |
| return -EFAULT; |
| d.dqb_itime = ((struct dqblk32 *)&d)->dqb_itime; |
| d.dqb_btime = ((struct dqblk32 *)&d)->dqb_btime; |
| break; |
| default: |
| return sys_quotactl(cmd, special, |
| id, (caddr_t)addr); |
| } |
| spec = getname (special); |
| err = PTR_ERR(spec); |
| if (IS_ERR(spec)) return err; |
| KERNEL_SYSCALL(err, sys_quotactl, cmd, (const char *)spec, id, (caddr_t)&d); |
| putname (spec); |
| if (cmds == Q_GETQUOTA) { |
| __kernel_time_t b = d.dqb_btime, i = d.dqb_itime; |
| ((struct dqblk32 *)&d)->dqb_itime = i; |
| ((struct dqblk32 *)&d)->dqb_btime = b; |
| if (copy_to_user ((struct dqblk32 *)addr, &d, |
| sizeof (struct dqblk32))) |
| return -EFAULT; |
| } |
| return err; |
| } |
| |
| struct timex32 { |
| unsigned int modes; /* mode selector */ |
| int offset; /* time offset (usec) */ |
| int freq; /* frequency offset (scaled ppm) */ |
| int maxerror; /* maximum error (usec) */ |
| int esterror; /* estimated error (usec) */ |
| int status; /* clock command/status */ |
| int constant; /* pll time constant */ |
| int precision; /* clock precision (usec) (read only) */ |
| int tolerance; /* clock frequency tolerance (ppm) |
| * (read only) |
| */ |
| struct timeval32 time; /* (read only) */ |
| int tick; /* (modified) usecs between clock ticks */ |
| |
| int ppsfreq; /* pps frequency (scaled ppm) (ro) */ |
| int jitter; /* pps jitter (us) (ro) */ |
| int shift; /* interval duration (s) (shift) (ro) */ |
| int stabil; /* pps stability (scaled ppm) (ro) */ |
| int jitcnt; /* jitter limit exceeded (ro) */ |
| int calcnt; /* calibration intervals (ro) */ |
| int errcnt; /* calibration errors (ro) */ |
| int stbcnt; /* stability limit exceeded (ro) */ |
| |
| int :32; int :32; int :32; int :32; |
| int :32; int :32; int :32; int :32; |
| int :32; int :32; int :32; int :32; |
| }; |
| |
| asmlinkage long sys32_adjtimex(struct timex32 *txc_p32) |
| { |
| struct timex txc; |
| struct timex32 t32; |
| int ret; |
| extern int do_adjtimex(struct timex *txc); |
| |
| if(copy_from_user(&t32, txc_p32, sizeof(struct timex32))) |
| return -EFAULT; |
| #undef CP |
| #define CP(x) txc.x = t32.x |
| CP(modes); CP(offset); CP(freq); CP(maxerror); CP(esterror); |
| CP(status); CP(constant); CP(precision); CP(tolerance); |
| CP(time.tv_sec); CP(time.tv_usec); CP(tick); CP(ppsfreq); CP(jitter); |
| CP(shift); CP(stabil); CP(jitcnt); CP(calcnt); CP(errcnt); |
| CP(stbcnt); |
| ret = do_adjtimex(&txc); |
| #define CP(x) t32.x = txc.x |
| CP(modes); CP(offset); CP(freq); CP(maxerror); CP(esterror); |
| CP(status); CP(constant); CP(precision); CP(tolerance); |
| CP(time.tv_sec); CP(time.tv_usec); CP(tick); CP(ppsfreq); CP(jitter); |
| CP(shift); CP(stabil); CP(jitcnt); CP(calcnt); CP(errcnt); |
| CP(stbcnt); |
| return copy_to_user(txc_p32, &t32, sizeof(struct timex32)) ? -EFAULT : ret; |
| } |
| |
| |
| struct sysinfo32 { |
| s32 uptime; |
| u32 loads[3]; |
| u32 totalram; |
| u32 freeram; |
| u32 sharedram; |
| u32 bufferram; |
| u32 totalswap; |
| u32 freeswap; |
| unsigned short procs; |
| u32 totalhigh; |
| u32 freehigh; |
| u32 mem_unit; |
| char _f[12]; |
| }; |
| |
| /* We used to call sys_sysinfo and translate the result. But sys_sysinfo |
| * undoes the good work done elsewhere, and rather than undoing the |
| * damage, I decided to just duplicate the code from sys_sysinfo here. |
| */ |
| |
| asmlinkage int sys32_sysinfo(struct sysinfo32 *info) |
| { |
| struct sysinfo val; |
| int err; |
| |
| /* We don't need a memset here because we copy the |
| * struct to userspace once element at a time. |
| */ |
| |
| cli(); |
| val.uptime = jiffies / HZ; |
| |
| val.loads[0] = avenrun[0] << (SI_LOAD_SHIFT - FSHIFT); |
| val.loads[1] = avenrun[1] << (SI_LOAD_SHIFT - FSHIFT); |
| val.loads[2] = avenrun[2] << (SI_LOAD_SHIFT - FSHIFT); |
| |
| val.procs = nr_threads-1; |
| sti(); |
| |
| si_meminfo(&val); |
| si_swapinfo(&val); |
| |
| err = put_user (val.uptime, &info->uptime); |
| err |= __put_user (val.loads[0], &info->loads[0]); |
| err |= __put_user (val.loads[1], &info->loads[1]); |
| err |= __put_user (val.loads[2], &info->loads[2]); |
| err |= __put_user (val.totalram, &info->totalram); |
| err |= __put_user (val.freeram, &info->freeram); |
| err |= __put_user (val.sharedram, &info->sharedram); |
| err |= __put_user (val.bufferram, &info->bufferram); |
| err |= __put_user (val.totalswap, &info->totalswap); |
| err |= __put_user (val.freeswap, &info->freeswap); |
| err |= __put_user (val.procs, &info->procs); |
| err |= __put_user (val.totalhigh, &info->totalhigh); |
| err |= __put_user (val.freehigh, &info->freehigh); |
| err |= __put_user (val.mem_unit, &info->mem_unit); |
| return err ? -EFAULT : 0; |
| } |
| |
| |
| /* lseek() needs a wrapper because 'offset' can be negative, but the top |
| * half of the argument has been zeroed by syscall.S. |
| */ |
| |
| extern asmlinkage off_t sys_lseek(unsigned int fd, off_t offset, unsigned int origin); |
| |
| asmlinkage int sys32_lseek(unsigned int fd, int offset, unsigned int origin) |
| { |
| return sys_lseek(fd, offset, origin); |
| } |
| |
| asmlinkage long sys32_semctl_broken(int semid, int semnum, int cmd, union semun arg) |
| { |
| union semun u; |
| |
| cmd &= ~IPC_64; /* should be removed together with the _broken suffix */ |
| |
| if (cmd == SETVAL) { |
| /* Ugh. arg is a union of int,ptr,ptr,ptr, so is 8 bytes. |
| * The int should be in the first 4, but our argument |
| * frobbing has left it in the last 4. |
| */ |
| u.val = *((int *)&arg + 1); |
| return sys_semctl (semid, semnum, cmd, u); |
| } |
| return sys_semctl (semid, semnum, cmd, arg); |
| } |
| |