coda.h
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上传日期:2009-04-28
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- /*
- You may distribute this file under either of the two licenses that
- follow at your discretion.
- */
- /* BLURB lgpl
- Coda File System
- Release 5
- Copyright (c) 1987-1999 Carnegie Mellon University
- Additional copyrights listed below
- This code is distributed "AS IS" without warranty of any kind under
- the terms of the GNU Library General Public Licence Version 2, as
- shown in the file LICENSE, or under the license shown below. The
- technical and financial contributors to Coda are listed in the file
- CREDITS.
- Additional copyrights
- */
- /*
- Coda: an Experimental Distributed File System
- Release 4.0
- Copyright (c) 1987-1999 Carnegie Mellon University
- All Rights Reserved
- Permission to use, copy, modify and distribute this software and its
- documentation is hereby granted, provided that both the copyright
- notice and this permission notice appear in all copies of the
- software, derivative works or modified versions, and any portions
- thereof, and that both notices appear in supporting documentation, and
- that credit is given to Carnegie Mellon University in all documents
- and publicity pertaining to direct or indirect use of this code or its
- derivatives.
- CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS,
- SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS
- FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON
- DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER
- RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF
- ANY DERIVATIVE WORK.
- Carnegie Mellon encourages users of this software to return any
- improvements or extensions that they make, and to grant Carnegie
- Mellon the rights to redistribute these changes without encumbrance.
- */
- /*
- *
- * Based on cfs.h from Mach, but revamped for increased simplicity.
- * Linux modifications by
- * Peter Braam, Aug 1996
- */
- #ifndef _CODA_HEADER_
- #define _CODA_HEADER_
- #include <linux/config.h>
- /* Catch new _KERNEL defn for NetBSD and DJGPP/__CYGWIN32__ */
- #if defined(__NetBSD__) ||
- ((defined(DJGPP) || defined(__CYGWIN32__)) && !defined(KERNEL))
- #include <sys/types.h>
- #endif
- #ifndef CODA_MAXSYMLINKS
- #define CODA_MAXSYMLINKS 10
- #endif
- #if defined(DJGPP) || defined(__CYGWIN32__)
- #ifdef KERNEL
- typedef unsigned long u_long;
- typedef unsigned int u_int;
- typedef unsigned short u_short;
- typedef u_long ino_t;
- typedef u_long dev_t;
- typedef void * caddr_t;
- #ifdef DOS
- typedef unsigned __int64 u_quad_t;
- #else
- typedef unsigned long long u_quad_t;
- #endif
- #define inline
- struct timespec {
- long ts_sec;
- long ts_nsec;
- };
- #else /* DJGPP but not KERNEL */
- #include <sys/time.h>
- typedef unsigned long long u_quad_t;
- #endif /* !KERNEL */
- #endif /* !DJGPP */
- #if defined(__linux__)
- #include <linux/time.h>
- #define cdev_t u_quad_t
- #ifndef __KERNEL__
- #if !defined(_UQUAD_T_) && (!defined(__GLIBC__) || __GLIBC__ < 2)
- #define _UQUAD_T_ 1
- typedef unsigned long long u_quad_t;
- #endif
- #else /*__KERNEL__ */
- typedef unsigned long long u_quad_t;
- #endif /* __KERNEL__ */
- #else
- #define cdev_t dev_t
- #endif
- #ifdef __CYGWIN32__
- struct timespec {
- time_t tv_sec; /* seconds */
- long tv_nsec; /* nanoseconds */
- };
- #endif
- #ifndef __BIT_TYPES_DEFINED__
- #define __BIT_TYPES_DEFINED__
- typedef signed char int8_t;
- typedef unsigned char u_int8_t;
- typedef short int16_t;
- typedef unsigned short u_int16_t;
- typedef int int32_t;
- typedef unsigned int u_int32_t;
- #endif
- /*
- * Cfs constants
- */
- #define CODA_MAXNAMLEN 255
- #define CODA_MAXPATHLEN 1024
- #define CODA_MAXSYMLINK 10
- /* these are Coda's version of O_RDONLY etc combinations
- * to deal with VFS open modes
- */
- #define C_O_READ 0x001
- #define C_O_WRITE 0x002
- #define C_O_TRUNC 0x010
- #define C_O_EXCL 0x100
- #define C_O_CREAT 0x200
- /* these are to find mode bits in Venus */
- #define C_M_READ 00400
- #define C_M_WRITE 00200
- /* for access Venus will use */
- #define C_A_C_OK 8 /* Test for writing upon create. */
- #define C_A_R_OK 4 /* Test for read permission. */
- #define C_A_W_OK 2 /* Test for write permission. */
- #define C_A_X_OK 1 /* Test for execute permission. */
- #define C_A_F_OK 0 /* Test for existence. */
- #ifndef _VENUS_DIRENT_T_
- #define _VENUS_DIRENT_T_ 1
- struct venus_dirent {
- u_int32_t d_fileno; /* file number of entry */
- u_int16_t d_reclen; /* length of this record */
- u_int8_t d_type; /* file type, see below */
- u_int8_t d_namlen; /* length of string in d_name */
- char d_name[CODA_MAXNAMLEN + 1];/* name must be no longer than this */
- };
- #undef DIRSIZ
- #define DIRSIZ(dp) ((sizeof (struct venus_dirent) - (CODA_MAXNAMLEN+1)) +
- (((dp)->d_namlen+1 + 3) &~ 3))
- /*
- * File types
- */
- #define CDT_UNKNOWN 0
- #define CDT_FIFO 1
- #define CDT_CHR 2
- #define CDT_DIR 4
- #define CDT_BLK 6
- #define CDT_REG 8
- #define CDT_LNK 10
- #define CDT_SOCK 12
- #define CDT_WHT 14
- /*
- * Convert between stat structure types and directory types.
- */
- #define IFTOCDT(mode) (((mode) & 0170000) >> 12)
- #define CDTTOIF(dirtype) ((dirtype) << 12)
- #endif
- #ifndef _VUID_T_
- #define _VUID_T_
- typedef u_int32_t vuid_t;
- typedef u_int32_t vgid_t;
- #endif /*_VUID_T_ */
- #ifdef CONFIG_CODA_FS_OLD_API
- struct CodaFid {
- u_int32_t opaque[3];
- };
- static __inline__ ino_t coda_f2i(struct CodaFid *fid)
- {
- if ( ! fid )
- return 0;
- if (fid->opaque[1] == 0xfffffffe || fid->opaque[1] == 0xffffffff)
- return ((fid->opaque[0] << 20) | (fid->opaque[2] & 0xfffff));
- else
- return (fid->opaque[2] + (fid->opaque[1]<<10) + (fid->opaque[0]<<20));
- }
- struct coda_cred {
- vuid_t cr_uid, cr_euid, cr_suid, cr_fsuid; /* Real, efftve, set, fs uid*/
- vgid_t cr_groupid, cr_egid, cr_sgid, cr_fsgid; /* same for groups */
- };
- #else /* not defined(CONFIG_CODA_FS_OLD_API) */
- struct CodaFid {
- u_int32_t opaque[4];
- };
- #define coda_f2i(fid)
- (fid ? (fid->opaque[3] ^ (fid->opaque[2]<<10) ^ (fid->opaque[1]<<20) ^ fid->opaque[0]) : 0)
- #endif
- #ifndef _VENUS_VATTR_T_
- #define _VENUS_VATTR_T_
- /*
- * Vnode types. VNON means no type.
- */
- enum coda_vtype { C_VNON, C_VREG, C_VDIR, C_VBLK, C_VCHR, C_VLNK, C_VSOCK, C_VFIFO, C_VBAD };
- struct coda_vattr {
- long va_type; /* vnode type (for create) */
- u_short va_mode; /* files access mode and type */
- short va_nlink; /* number of references to file */
- vuid_t va_uid; /* owner user id */
- vgid_t va_gid; /* owner group id */
- long va_fileid; /* file id */
- u_quad_t va_size; /* file size in bytes */
- long va_blocksize; /* blocksize preferred for i/o */
- struct timespec va_atime; /* time of last access */
- struct timespec va_mtime; /* time of last modification */
- struct timespec va_ctime; /* time file changed */
- u_long va_gen; /* generation number of file */
- u_long va_flags; /* flags defined for file */
- cdev_t va_rdev; /* device special file represents */
- u_quad_t va_bytes; /* bytes of disk space held by file */
- u_quad_t va_filerev; /* file modification number */
- };
- #endif
- /* structure used by CODA_STATFS for getting cache information from venus */
- struct coda_statfs {
- int32_t f_blocks;
- int32_t f_bfree;
- int32_t f_bavail;
- int32_t f_files;
- int32_t f_ffree;
- };
- /*
- * Kernel <--> Venus communications.
- */
- #define CODA_ROOT 2
- #define CODA_OPEN_BY_FD 3
- #define CODA_OPEN 4
- #define CODA_CLOSE 5
- #define CODA_IOCTL 6
- #define CODA_GETATTR 7
- #define CODA_SETATTR 8
- #define CODA_ACCESS 9
- #define CODA_LOOKUP 10
- #define CODA_CREATE 11
- #define CODA_REMOVE 12
- #define CODA_LINK 13
- #define CODA_RENAME 14
- #define CODA_MKDIR 15
- #define CODA_RMDIR 16
- #define CODA_SYMLINK 18
- #define CODA_READLINK 19
- #define CODA_FSYNC 20
- #define CODA_VGET 22
- #define CODA_SIGNAL 23
- #define CODA_REPLACE 24 /* DOWNCALL */
- #define CODA_FLUSH 25 /* DOWNCALL */
- #define CODA_PURGEUSER 26 /* DOWNCALL */
- #define CODA_ZAPFILE 27 /* DOWNCALL */
- #define CODA_ZAPDIR 28 /* DOWNCALL */
- #define CODA_PURGEFID 30 /* DOWNCALL */
- #define CODA_OPEN_BY_PATH 31
- #define CODA_RESOLVE 32
- #define CODA_REINTEGRATE 33
- #define CODA_STATFS 34
- #define CODA_STORE 35
- #define CODA_RELEASE 36
- #define CODA_NCALLS 37
- #define DOWNCALL(opcode) (opcode >= CODA_REPLACE && opcode <= CODA_PURGEFID)
- #define VC_MAXDATASIZE 8192
- #define VC_MAXMSGSIZE sizeof(union inputArgs)+sizeof(union outputArgs) +
- VC_MAXDATASIZE
- #define CIOC_KERNEL_VERSION _IOWR('c', 10, size_t)
- #if 0
- #define CODA_KERNEL_VERSION 0 /* don't care about kernel version number */
- #define CODA_KERNEL_VERSION 1 /* The old venus 4.6 compatible interface */
- #endif
- #ifdef CONFIG_CODA_FS_OLD_API
- #define CODA_KERNEL_VERSION 2 /* venus_lookup got an extra parameter */
- #else
- #define CODA_KERNEL_VERSION 3 /* 128-bit file identifiers */
- #endif
- /*
- * Venus <-> Coda RPC arguments
- */
- struct coda_in_hdr {
- u_int32_t opcode;
- u_int32_t unique; /* Keep multiple outstanding msgs distinct */
- #ifdef CONFIG_CODA_FS_OLD_API
- u_int16_t pid; /* Common to all */
- u_int16_t pgid; /* Common to all */
- u_int16_t sid; /* Common to all */
- struct coda_cred cred; /* Common to all */
- #else
- pid_t pid;
- pid_t pgid;
- vuid_t uid;
- #endif
- };
- /* Really important that opcode and unique are 1st two fields! */
- struct coda_out_hdr {
- u_int32_t opcode;
- u_int32_t unique;
- u_int32_t result;
- };
- /* coda_root: NO_IN */
- struct coda_root_out {
- struct coda_out_hdr oh;
- struct CodaFid VFid;
- };
- struct coda_root_in {
- struct coda_in_hdr in;
- };
- /* coda_open: */
- struct coda_open_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- int flags;
- };
- struct coda_open_out {
- struct coda_out_hdr oh;
- cdev_t dev;
- ino_t inode;
- };
- /* coda_store: */
- struct coda_store_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- int flags;
- };
- struct coda_store_out {
- struct coda_out_hdr out;
- };
- /* coda_release: */
- struct coda_release_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- int flags;
- };
- struct coda_release_out {
- struct coda_out_hdr out;
- };
- /* coda_close: */
- struct coda_close_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- int flags;
- };
- struct coda_close_out {
- struct coda_out_hdr out;
- };
- /* coda_ioctl: */
- struct coda_ioctl_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- int cmd;
- int len;
- int rwflag;
- char *data; /* Place holder for data. */
- };
- struct coda_ioctl_out {
- struct coda_out_hdr oh;
- int len;
- caddr_t data; /* Place holder for data. */
- };
- /* coda_getattr: */
- struct coda_getattr_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- };
- struct coda_getattr_out {
- struct coda_out_hdr oh;
- struct coda_vattr attr;
- };
- /* coda_setattr: NO_OUT */
- struct coda_setattr_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- struct coda_vattr attr;
- };
- struct coda_setattr_out {
- struct coda_out_hdr out;
- };
- /* coda_access: NO_OUT */
- struct coda_access_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- int flags;
- };
- struct coda_access_out {
- struct coda_out_hdr out;
- };
- /* lookup flags */
- #define CLU_CASE_SENSITIVE 0x01
- #define CLU_CASE_INSENSITIVE 0x02
- /* coda_lookup: */
- struct coda_lookup_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- int name; /* Place holder for data. */
- int flags;
- };
- struct coda_lookup_out {
- struct coda_out_hdr oh;
- struct CodaFid VFid;
- int vtype;
- };
- /* coda_create: */
- struct coda_create_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- struct coda_vattr attr;
- int excl;
- int mode;
- int name; /* Place holder for data. */
- };
- struct coda_create_out {
- struct coda_out_hdr oh;
- struct CodaFid VFid;
- struct coda_vattr attr;
- };
- /* coda_remove: NO_OUT */
- struct coda_remove_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- int name; /* Place holder for data. */
- };
- struct coda_remove_out {
- struct coda_out_hdr out;
- };
- /* coda_link: NO_OUT */
- struct coda_link_in {
- struct coda_in_hdr ih;
- struct CodaFid sourceFid; /* cnode to link *to* */
- struct CodaFid destFid; /* Directory in which to place link */
- int tname; /* Place holder for data. */
- };
- struct coda_link_out {
- struct coda_out_hdr out;
- };
- /* coda_rename: NO_OUT */
- struct coda_rename_in {
- struct coda_in_hdr ih;
- struct CodaFid sourceFid;
- int srcname;
- struct CodaFid destFid;
- int destname;
- };
- struct coda_rename_out {
- struct coda_out_hdr out;
- };
- /* coda_mkdir: */
- struct coda_mkdir_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- struct coda_vattr attr;
- int name; /* Place holder for data. */
- };
- struct coda_mkdir_out {
- struct coda_out_hdr oh;
- struct CodaFid VFid;
- struct coda_vattr attr;
- };
- /* coda_rmdir: NO_OUT */
- struct coda_rmdir_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- int name; /* Place holder for data. */
- };
- struct coda_rmdir_out {
- struct coda_out_hdr out;
- };
- /* coda_symlink: NO_OUT */
- struct coda_symlink_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid; /* Directory to put symlink in */
- int srcname;
- struct coda_vattr attr;
- int tname;
- };
- struct coda_symlink_out {
- struct coda_out_hdr out;
- };
- /* coda_readlink: */
- struct coda_readlink_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- };
- struct coda_readlink_out {
- struct coda_out_hdr oh;
- int count;
- caddr_t data; /* Place holder for data. */
- };
- /* coda_fsync: NO_OUT */
- struct coda_fsync_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- };
- struct coda_fsync_out {
- struct coda_out_hdr out;
- };
- /* coda_vget: */
- struct coda_vget_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- };
- struct coda_vget_out {
- struct coda_out_hdr oh;
- struct CodaFid VFid;
- int vtype;
- };
- /* CODA_SIGNAL is out-of-band, doesn't need data. */
- /* CODA_INVALIDATE is a venus->kernel call */
- /* CODA_FLUSH is a venus->kernel call */
- /* coda_purgeuser: */
- /* CODA_PURGEUSER is a venus->kernel call */
- struct coda_purgeuser_out {
- struct coda_out_hdr oh;
- #ifdef CONFIG_CODA_FS_OLD_API
- struct coda_cred cred;
- #else
- vuid_t uid;
- #endif
- };
- /* coda_zapfile: */
- /* CODA_ZAPFILE is a venus->kernel call */
- struct coda_zapfile_out {
- struct coda_out_hdr oh;
- struct CodaFid CodaFid;
- };
- /* coda_zapdir: */
- /* CODA_ZAPDIR is a venus->kernel call */
- struct coda_zapdir_out {
- struct coda_out_hdr oh;
- struct CodaFid CodaFid;
- };
- /* coda_purgefid: */
- /* CODA_PURGEFID is a venus->kernel call */
- struct coda_purgefid_out {
- struct coda_out_hdr oh;
- struct CodaFid CodaFid;
- };
- /* coda_replace: */
- /* CODA_REPLACE is a venus->kernel call */
- struct coda_replace_out { /* coda_replace is a venus->kernel call */
- struct coda_out_hdr oh;
- struct CodaFid NewFid;
- struct CodaFid OldFid;
- };
- /* coda_open_by_fd: */
- struct coda_open_by_fd_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- int flags;
- };
- struct coda_open_by_fd_out {
- struct coda_out_hdr oh;
- int fd;
- #ifdef __KERNEL__
- struct file *fh; /* not passed from userspace but used in-kernel only */
- #endif
- };
- /* coda_open_by_path: */
- struct coda_open_by_path_in {
- struct coda_in_hdr ih;
- struct CodaFid VFid;
- int flags;
- };
- struct coda_open_by_path_out {
- struct coda_out_hdr oh;
- int path;
- };
- /* coda_statfs: NO_IN */
- struct coda_statfs_in {
- struct coda_in_hdr in;
- };
- struct coda_statfs_out {
- struct coda_out_hdr oh;
- struct coda_statfs stat;
- };
- /*
- * Occasionally, we don't cache the fid returned by CODA_LOOKUP.
- * For instance, if the fid is inconsistent.
- * This case is handled by setting the top bit of the type result parameter.
- */
- #define CODA_NOCACHE 0x80000000
- union inputArgs {
- struct coda_in_hdr ih; /* NB: every struct below begins with an ih */
- struct coda_open_in coda_open;
- struct coda_store_in coda_store;
- struct coda_release_in coda_release;
- struct coda_close_in coda_close;
- struct coda_ioctl_in coda_ioctl;
- struct coda_getattr_in coda_getattr;
- struct coda_setattr_in coda_setattr;
- struct coda_access_in coda_access;
- struct coda_lookup_in coda_lookup;
- struct coda_create_in coda_create;
- struct coda_remove_in coda_remove;
- struct coda_link_in coda_link;
- struct coda_rename_in coda_rename;
- struct coda_mkdir_in coda_mkdir;
- struct coda_rmdir_in coda_rmdir;
- struct coda_symlink_in coda_symlink;
- struct coda_readlink_in coda_readlink;
- struct coda_fsync_in coda_fsync;
- struct coda_vget_in coda_vget;
- struct coda_open_by_fd_in coda_open_by_fd;
- struct coda_open_by_path_in coda_open_by_path;
- struct coda_statfs_in coda_statfs;
- };
- union outputArgs {
- struct coda_out_hdr oh; /* NB: every struct below begins with an oh */
- struct coda_root_out coda_root;
- struct coda_open_out coda_open;
- struct coda_ioctl_out coda_ioctl;
- struct coda_getattr_out coda_getattr;
- struct coda_lookup_out coda_lookup;
- struct coda_create_out coda_create;
- struct coda_mkdir_out coda_mkdir;
- struct coda_readlink_out coda_readlink;
- struct coda_vget_out coda_vget;
- struct coda_purgeuser_out coda_purgeuser;
- struct coda_zapfile_out coda_zapfile;
- struct coda_zapdir_out coda_zapdir;
- struct coda_purgefid_out coda_purgefid;
- struct coda_replace_out coda_replace;
- struct coda_open_by_fd_out coda_open_by_fd;
- struct coda_open_by_path_out coda_open_by_path;
- struct coda_statfs_out coda_statfs;
- };
- union coda_downcalls {
- /* CODA_INVALIDATE is a venus->kernel call */
- /* CODA_FLUSH is a venus->kernel call */
- struct coda_purgeuser_out purgeuser;
- struct coda_zapfile_out zapfile;
- struct coda_zapdir_out zapdir;
- struct coda_purgefid_out purgefid;
- struct coda_replace_out replace;
- };
- /*
- * Used for identifying usage of "Control" and pioctls
- */
- #define PIOCPARM_MASK 0x0000ffff
- struct ViceIoctl {
- void __user *in; /* Data to be transferred in */
- void __user *out; /* Data to be transferred out */
- u_short in_size; /* Size of input buffer <= 2K */
- u_short out_size; /* Maximum size of output buffer, <= 2K */
- };
- struct PioctlData {
- const char __user *path;
- int follow;
- struct ViceIoctl vi;
- };
- #define CODA_CONTROL ".CONTROL"
- #define CODA_CONTROLLEN 8
- #define CTL_INO -1
- /* Data passed to mount */
- #define CODA_MOUNT_VERSION 1
- struct coda_mount_data {
- int version;
- int fd; /* Opened device */
- };
- #endif