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