| /* |
| * Coda File System, Linux Kernel module |
| * |
| * Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University |
| * Linux modifications (C) 1996, Peter J. Braam |
| * Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University |
| * |
| * Carnegie Mellon University encourages users of this software to |
| * contribute improvements to the Coda project. |
| */ |
| |
| #ifndef _LINUX_CODA_FS |
| #define _LINUX_CODA_FS |
| |
| #include <linux/kernel.h> |
| #include <linux/param.h> |
| #include <linux/sched.h> |
| #include <linux/mm.h> |
| #include <linux/vmalloc.h> |
| #include <linux/slab.h> |
| #include <linux/wait.h> |
| #include <linux/types.h> |
| #include <linux/fs.h> |
| #include <linux/coda_fs_i.h> |
| |
| /* operations */ |
| extern struct inode_operations coda_dir_inode_operations; |
| extern struct inode_operations coda_file_inode_operations; |
| extern struct inode_operations coda_ioctl_inode_operations; |
| |
| extern struct address_space_operations coda_file_aops; |
| extern struct address_space_operations coda_symlink_aops; |
| |
| extern struct file_operations coda_dir_operations; |
| extern struct file_operations coda_file_operations; |
| extern struct file_operations coda_ioctl_operations; |
| |
| /* operations shared over more than one file */ |
| int coda_open(struct inode *i, struct file *f); |
| int coda_flush(struct file *f); |
| int coda_release(struct inode *i, struct file *f); |
| int coda_permission(struct inode *inode, int mask); |
| int coda_revalidate_inode(struct dentry *); |
| int coda_notify_change(struct dentry *, struct iattr *); |
| int coda_isnullfid(ViceFid *fid); |
| |
| /* global variables */ |
| extern int coda_debug; |
| extern int coda_access_cache; |
| extern int coda_fake_statfs; |
| |
| /* this file: heloers */ |
| static __inline__ struct ViceFid *coda_i2f(struct inode *); |
| static __inline__ char *coda_i2s(struct inode *); |
| static __inline__ void coda_flag_inode(struct inode *, int flag); |
| char *coda_f2s(ViceFid *f); |
| int coda_isroot(struct inode *i); |
| int coda_iscontrol(const char *name, size_t length); |
| |
| void coda_load_creds(struct coda_cred *cred); |
| void coda_vattr_to_iattr(struct inode *, struct coda_vattr *); |
| void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *); |
| unsigned short coda_flags_to_cflags(unsigned short); |
| void print_vattr( struct coda_vattr *attr ); |
| int coda_cred_ok(struct coda_cred *cred); |
| int coda_cred_eq(struct coda_cred *cred1, struct coda_cred *cred2); |
| |
| /* sysctl.h */ |
| void coda_sysctl_init(void); |
| void coda_sysctl_clean(void); |
| |
| |
| /* debugging masks */ |
| #define D_SUPER 1 /* print results returned by Venus */ |
| #define D_INODE 2 /* print entry and exit into procedure */ |
| #define D_FILE 4 |
| #define D_CACHE 8 /* cache debugging */ |
| #define D_MALLOC 16 /* print malloc, de-alloc information */ |
| #define D_CNODE 32 |
| #define D_UPCALL 64 /* up and downcall debugging */ |
| #define D_PSDEV 128 |
| #define D_PIOCTL 256 |
| #define D_SPECIAL 512 |
| #define D_TIMING 1024 |
| #define D_DOWNCALL 2048 |
| |
| #define CDEBUG(mask, format, a...) \ |
| do { \ |
| if (coda_debug & mask) { \ |
| printk("(%s,l. %d): ", __FUNCTION__, __LINE__); \ |
| printk(format, ## a); } \ |
| } while (0) |
| |
| #define CODA_ALLOC(ptr, cast, size) do { \ |
| if (size < PAGE_SIZE) \ |
| ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \ |
| else \ |
| ptr = (cast)vmalloc((unsigned long) size); \ |
| if (!ptr) \ |
| printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \ |
| else memset( ptr, 0, size ); \ |
| } while (0) |
| |
| |
| #define CODA_FREE(ptr,size) \ |
| do { if (size < PAGE_SIZE) kfree((ptr)); else vfree((ptr)); } while (0) |
| |
| /* inode to cnode access functions */ |
| |
| #define ITOC(inode) (&((inode)->u.coda_i)) |
| |
| static __inline__ struct ViceFid *coda_i2f(struct inode *inode) |
| { |
| return &(ITOC(inode)->c_fid); |
| } |
| |
| static __inline__ char *coda_i2s(struct inode *inode) |
| { |
| return coda_f2s(&(ITOC(inode)->c_fid)); |
| } |
| |
| /* this will not zap the inode away */ |
| static __inline__ void coda_flag_inode(struct inode *inode, int flag) |
| { |
| ITOC(inode)->c_flags |= flag; |
| } |
| |
| #endif |