/* * * Coda: an Experimental Distributed File System * Release 3.1 * * Copyright (c) 1987-1998 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. * * @(#) src/sys/cfs/coda.h,v 1.1.1.1 1998/08/29 21:14:52 rvb Exp $ * $Id: $ * */ /* * * Based on cfs.h from Mach, but revamped for increased simplicity. * Linux modifications by Peter Braam, Aug 1996 */ #ifndef _CFS_HEADER_ #define _CFS_HEADER_ /* Catch new _KERNEL defn for NetBSD */ #ifdef __NetBSD__ #include #endif #if defined(__linux__) || defined(__CYGWIN32__) #define cdev_t u_quad_t #if !defined(_UQUAD_T_) && (!defined(__GLIBC__) || __GLIBC__ < 2) #define _UQUAD_T_ 1 typedef unsigned long long u_quad_t; #endif #else #define cdev_t dev_t #endif #ifdef __CYGWIN32__ typedef unsigned char u_int8_t; struct timespec { time_t tv_sec; /* seconds */ long tv_nsec; /* nanoseconds */ }; #endif /* * Cfs constants */ #define CFS_MAXNAMLEN 255 #define CFS_MAXPATHLEN 1024 #define CFS_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 /* 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_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 { unsigned long d_fileno; /* file number of entry */ unsigned short d_reclen; /* length of this record */ char d_type; /* file type, see below */ char d_namlen; /* length of string in d_name */ char d_name[CFS_MAXNAMLEN + 1];/* name must be no longer than this */ }; #undef DIRSIZ #define DIRSIZ(dp) ((sizeof (struct venus_dirent) - (CFS_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 _FID_T_ #define _FID_T_ 1 typedef u_long VolumeId; typedef u_long VnodeId; typedef u_long Unique_t; typedef u_long FileVersion; #endif #ifndef _VICEFID_T_ #define _VICEFID_T_ 1 typedef struct ViceFid { VolumeId Volume; VnodeId Vnode; Unique_t Unique; } ViceFid; #endif /* VICEFID */ #ifdef __linux__ static inline ino_t coda_f2i(struct ViceFid *fid) { if ( fid ) { return (fid->Unique + (fid->Vnode << 10) + (fid->Volume << 20)); } else { return 0; } } #endif #ifndef _VUID_T_ #define _VUID_T_ typedef u_long vuid_t; typedef u_long vgid_t; #endif /*_VUID_T_ */ #ifndef _CODACRED_T_ #define _CODACRED_T_ struct coda_cred { vuid_t cr_uid, cr_euid, cr_suid, cr_fsuid; /* Real, efftve, set, fs uid*/ #if defined(__NetBSD__) || defined(__FreeBSD__) vgid_t cr_groupid, cr_egid, cr_sgid, cr_fsgid; /* same for groups */ #else vgid_t cr_gid, cr_egid, cr_sgid, cr_fsgid; /* same for groups */ #endif }; #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 { enum coda_vtype 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 /* * Kernel <--> Venus communications. */ #define CFS_ROOT ((u_long) 2) #define CFS_SYNC ((u_long) 3) #define CFS_OPEN ((u_long) 4) #define CFS_CLOSE ((u_long) 5) #define CFS_IOCTL ((u_long) 6) #define CFS_GETATTR ((u_long) 7) #define CFS_SETATTR ((u_long) 8) #define CFS_ACCESS ((u_long) 9) #define CFS_LOOKUP ((u_long) 10) #define CFS_CREATE ((u_long) 11) #define CFS_REMOVE ((u_long) 12) #define CFS_LINK ((u_long) 13) #define CFS_RENAME ((u_long) 14) #define CFS_MKDIR ((u_long) 15) #define CFS_RMDIR ((u_long) 16) #define CFS_READDIR ((u_long) 17) #define CFS_SYMLINK ((u_long) 18) #define CFS_READLINK ((u_long) 19) #define CFS_FSYNC ((u_long) 20) #define CFS_INACTIVE ((u_long) 21) #define CFS_VGET ((u_long) 22) #define CFS_SIGNAL ((u_long) 23) #define CFS_REPLACE ((u_long) 24) #define CFS_FLUSH ((u_long) 25) #define CFS_PURGEUSER ((u_long) 26) #define CFS_ZAPFILE ((u_long) 27) #define CFS_ZAPDIR ((u_long) 28) #define CFS_ZAPVNODE ((u_long) 29) #define CFS_PURGEFID ((u_long) 30) #define CFS_NCALLS 31 #define DOWNCALL(opcode) (opcode >= CFS_REPLACE && opcode <= CFS_PURGEFID) #define VC_MAXDATASIZE 8192 #define VC_MAXMSGSIZE sizeof(union inputArgs)+sizeof(union outputArgs) +\ VC_MAXDATASIZE /* * Venus <-> Coda RPC arguments */ struct cfs_in_hdr { unsigned long opcode; unsigned long unique; /* Keep multiple outstanding msgs distinct */ u_short pid; /* Common to all */ u_short pgid; /* Common to all */ u_short sid; /* Common to all */ struct coda_cred cred; /* Common to all */ }; /* Really important that opcode and unique are 1st two fields! */ struct cfs_out_hdr { unsigned long opcode; unsigned long unique; unsigned long result; }; /* cfs_root: NO_IN */ struct cfs_root_out { struct cfs_out_hdr oh; ViceFid VFid; }; struct cfs_root_in { struct cfs_in_hdr in; }; /* cfs_sync: */ /* Nothing needed for cfs_sync */ /* cfs_open: */ struct cfs_open_in { struct cfs_in_hdr ih; ViceFid VFid; int flags; }; struct cfs_open_out { struct cfs_out_hdr oh; cdev_t dev; ino_t inode; }; /* cfs_close: */ struct cfs_close_in { struct cfs_in_hdr ih; ViceFid VFid; int flags; }; struct cfs_close_out { struct cfs_out_hdr out; }; /* cfs_ioctl: */ struct cfs_ioctl_in { struct cfs_in_hdr ih; ViceFid VFid; int cmd; int len; int rwflag; char *data; /* Place holder for data. */ }; struct cfs_ioctl_out { struct cfs_out_hdr oh; int len; caddr_t data; /* Place holder for data. */ }; /* cfs_getattr: */ struct cfs_getattr_in { struct cfs_in_hdr ih; ViceFid VFid; }; struct cfs_getattr_out { struct cfs_out_hdr oh; struct coda_vattr attr; }; /* cfs_setattr: NO_OUT */ struct cfs_setattr_in { struct cfs_in_hdr ih; ViceFid VFid; struct coda_vattr attr; }; struct cfs_setattr_out { struct cfs_out_hdr out; }; /* cfs_access: NO_OUT */ struct cfs_access_in { struct cfs_in_hdr ih; ViceFid VFid; int flags; }; struct cfs_access_out { struct cfs_out_hdr out; }; /* cfs_lookup: */ struct cfs_lookup_in { struct cfs_in_hdr ih; ViceFid VFid; int name; /* Place holder for data. */ }; struct cfs_lookup_out { struct cfs_out_hdr oh; ViceFid VFid; int vtype; }; /* cfs_create: */ struct cfs_create_in { struct cfs_in_hdr ih; ViceFid VFid; struct coda_vattr attr; int excl; int mode; int name; /* Place holder for data. */ }; struct cfs_create_out { struct cfs_out_hdr oh; ViceFid VFid; struct coda_vattr attr; }; /* cfs_remove: NO_OUT */ struct cfs_remove_in { struct cfs_in_hdr ih; ViceFid VFid; int name; /* Place holder for data. */ }; struct cfs_remove_out { struct cfs_out_hdr out; }; /* cfs_link: NO_OUT */ struct cfs_link_in { struct cfs_in_hdr ih; ViceFid sourceFid; /* cnode to link *to* */ ViceFid destFid; /* Directory in which to place link */ int tname; /* Place holder for data. */ }; struct cfs_link_out { struct cfs_out_hdr out; }; /* cfs_rename: NO_OUT */ struct cfs_rename_in { struct cfs_in_hdr ih; ViceFid sourceFid; int srcname; ViceFid destFid; int destname; }; struct cfs_rename_out { struct cfs_out_hdr out; }; /* cfs_mkdir: */ struct cfs_mkdir_in { struct cfs_in_hdr ih; ViceFid VFid; struct coda_vattr attr; int name; /* Place holder for data. */ }; struct cfs_mkdir_out { struct cfs_out_hdr oh; ViceFid VFid; struct coda_vattr attr; }; /* cfs_rmdir: NO_OUT */ struct cfs_rmdir_in { struct cfs_in_hdr ih; ViceFid VFid; int name; /* Place holder for data. */ }; struct cfs_rmdir_out { struct cfs_out_hdr out; }; /* cfs_readdir: */ struct cfs_readdir_in { struct cfs_in_hdr ih; ViceFid VFid; int count; int offset; }; struct cfs_readdir_out { struct cfs_out_hdr oh; int size; caddr_t data; /* Place holder for data. */ }; /* cfs_symlink: NO_OUT */ struct cfs_symlink_in { struct cfs_in_hdr ih; ViceFid VFid; /* Directory to put symlink in */ int srcname; struct coda_vattr attr; int tname; }; struct cfs_symlink_out { struct cfs_out_hdr out; }; /* cfs_readlink: */ struct cfs_readlink_in { struct cfs_in_hdr ih; ViceFid VFid; }; struct cfs_readlink_out { struct cfs_out_hdr oh; int count; caddr_t data; /* Place holder for data. */ }; /* cfs_fsync: NO_OUT */ struct cfs_fsync_in { struct cfs_in_hdr ih; ViceFid VFid; }; struct cfs_fsync_out { struct cfs_out_hdr out; }; /* cfs_inactive: NO_OUT */ struct cfs_inactive_in { struct cfs_in_hdr ih; ViceFid VFid; }; /* cfs_vget: */ struct cfs_vget_in { struct cfs_in_hdr ih; ViceFid VFid; }; struct cfs_vget_out { struct cfs_out_hdr oh; ViceFid VFid; int vtype; }; /* CFS_SIGNAL is out-of-band, doesn't need data. */ /* CFS_INVALIDATE is a venus->kernel call */ /* CFS_FLUSH is a venus->kernel call */ /* cfs_purgeuser: */ /* CFS_PURGEUSER is a venus->kernel call */ struct cfs_purgeuser_out { struct cfs_out_hdr oh; struct coda_cred cred; }; /* cfs_zapfile: */ /* CFS_ZAPFILE is a venus->kernel call */ struct cfs_zapfile_out { struct cfs_out_hdr oh; ViceFid CodaFid; }; /* cfs_zapdir: */ /* CFS_ZAPDIR is a venus->kernel call */ struct cfs_zapdir_out { struct cfs_out_hdr oh; ViceFid CodaFid; }; /* cfs_zapnode: */ /* CFS_ZAPVNODE is a venus->kernel call */ struct cfs_zapvnode_out { struct cfs_out_hdr oh; struct coda_cred cred; ViceFid VFid; }; /* cfs_purgefid: */ /* CFS_PURGEFID is a venus->kernel call */ struct cfs_purgefid_out { struct cfs_out_hdr oh; ViceFid CodaFid; }; /* cfs_rdwr: */ struct cfs_rdwr_in { struct cfs_in_hdr ih; ViceFid VFid; int rwflag; int count; int offset; int ioflag; caddr_t data; /* Place holder for data. */ }; struct cfs_rdwr_out { struct cfs_out_hdr oh; int rwflag; int count; caddr_t data; /* Place holder for data. */ }; /* cfs_replace: */ /* CFS_REPLACE is a venus->kernel call */ struct cfs_replace_out { /* cfs_replace is a venus->kernel call */ struct cfs_out_hdr oh; ViceFid NewFid; ViceFid OldFid; }; /* * Occasionally, don't cache the fid returned by CFS_LOOKUP. For instance, if * the fid is inconsistent. This case is handled by setting the top bit of the * return result parameter. */ #define CFS_NOCACHE 0x80000000 union inputArgs { struct cfs_in_hdr ih; /* NB: every struct below begins with an ih */ struct cfs_open_in cfs_open; struct cfs_close_in cfs_close; struct cfs_ioctl_in cfs_ioctl; struct cfs_getattr_in cfs_getattr; struct cfs_setattr_in cfs_setattr; struct cfs_access_in cfs_access; struct cfs_lookup_in cfs_lookup; struct cfs_create_in cfs_create; struct cfs_remove_in cfs_remove; struct cfs_link_in cfs_link; struct cfs_rename_in cfs_rename; struct cfs_mkdir_in cfs_mkdir; struct cfs_rmdir_in cfs_rmdir; struct cfs_readdir_in cfs_readdir; struct cfs_symlink_in cfs_symlink; struct cfs_readlink_in cfs_readlink; struct cfs_fsync_in cfs_fsync; struct cfs_inactive_in cfs_inactive; struct cfs_vget_in cfs_vget; struct cfs_rdwr_in cfs_rdwr; }; union outputArgs { struct cfs_out_hdr oh; /* NB: every struct below begins with an oh */ struct cfs_root_out cfs_root; struct cfs_open_out cfs_open; struct cfs_ioctl_out cfs_ioctl; struct cfs_getattr_out cfs_getattr; struct cfs_lookup_out cfs_lookup; struct cfs_create_out cfs_create; struct cfs_mkdir_out cfs_mkdir; struct cfs_readdir_out cfs_readdir; struct cfs_readlink_out cfs_readlink; struct cfs_vget_out cfs_vget; struct cfs_purgeuser_out cfs_purgeuser; struct cfs_zapfile_out cfs_zapfile; struct cfs_zapdir_out cfs_zapdir; struct cfs_zapvnode_out cfs_zapvnode; struct cfs_purgefid_out cfs_purgefid; struct cfs_rdwr_out cfs_rdwr; struct cfs_replace_out cfs_replace; }; union cfs_downcalls { /* CFS_INVALIDATE is a venus->kernel call */ /* CFS_FLUSH is a venus->kernel call */ struct cfs_purgeuser_out purgeuser; struct cfs_zapfile_out zapfile; struct cfs_zapdir_out zapdir; struct cfs_zapvnode_out zapvnode; struct cfs_purgefid_out purgefid; struct cfs_replace_out replace; }; /* * Used for identifying usage of "Control" and pioctls */ #define PIOCPARM_MASK 0x0000ffff struct ViceIoctl { caddr_t in, out; /* Data to be transferred in, or out */ short in_size; /* Size of input buffer <= 2K */ short out_size; /* Maximum size of output buffer, <= 2K */ }; struct PioctlData { const char *path; int follow; struct ViceIoctl vi; }; #define CFS_CONTROL ".CONTROL" #define CFS_CONTROLLEN 8 #define CTL_VOL -1 #define CTL_VNO -1 #define CTL_UNI -1 #define CTL_INO -1 #define CTL_FILE "/coda/.CONTROL" #define IS_CTL_FID(fidp) ((fidp)->Volume == CTL_VOL &&\ (fidp)->Vnode == CTL_VNO &&\ (fidp)->Unique == CTL_UNI) #endif