| /* |
| * linux/fs/9p/9p.h |
| * |
| * 9P protocol definitions. |
| * |
| * Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net> |
| * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com> |
| * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to: |
| * Free Software Foundation |
| * 51 Franklin Street, Fifth Floor |
| * Boston, MA 02111-1301 USA |
| * |
| */ |
| |
| /* Message Types */ |
| enum { |
| TVERSION = 100, |
| RVERSION, |
| TAUTH = 102, |
| RAUTH, |
| TATTACH = 104, |
| RATTACH, |
| TERROR = 106, |
| RERROR, |
| TFLUSH = 108, |
| RFLUSH, |
| TWALK = 110, |
| RWALK, |
| TOPEN = 112, |
| ROPEN, |
| TCREATE = 114, |
| RCREATE, |
| TREAD = 116, |
| RREAD, |
| TWRITE = 118, |
| RWRITE, |
| TCLUNK = 120, |
| RCLUNK, |
| TREMOVE = 122, |
| RREMOVE, |
| TSTAT = 124, |
| RSTAT, |
| TWSTAT = 126, |
| RWSTAT, |
| }; |
| |
| /* modes */ |
| enum { |
| V9FS_OREAD = 0x00, |
| V9FS_OWRITE = 0x01, |
| V9FS_ORDWR = 0x02, |
| V9FS_OEXEC = 0x03, |
| V9FS_OEXCL = 0x04, |
| V9FS_OTRUNC = 0x10, |
| V9FS_OREXEC = 0x20, |
| V9FS_ORCLOSE = 0x40, |
| V9FS_OAPPEND = 0x80, |
| }; |
| |
| /* permissions */ |
| enum { |
| V9FS_DMDIR = 0x80000000, |
| V9FS_DMAPPEND = 0x40000000, |
| V9FS_DMEXCL = 0x20000000, |
| V9FS_DMMOUNT = 0x10000000, |
| V9FS_DMAUTH = 0x08000000, |
| V9FS_DMTMP = 0x04000000, |
| V9FS_DMSYMLINK = 0x02000000, |
| V9FS_DMLINK = 0x01000000, |
| /* 9P2000.u extensions */ |
| V9FS_DMDEVICE = 0x00800000, |
| V9FS_DMNAMEDPIPE = 0x00200000, |
| V9FS_DMSOCKET = 0x00100000, |
| V9FS_DMSETUID = 0x00080000, |
| V9FS_DMSETGID = 0x00040000, |
| }; |
| |
| /* qid.types */ |
| enum { |
| V9FS_QTDIR = 0x80, |
| V9FS_QTAPPEND = 0x40, |
| V9FS_QTEXCL = 0x20, |
| V9FS_QTMOUNT = 0x10, |
| V9FS_QTAUTH = 0x08, |
| V9FS_QTTMP = 0x04, |
| V9FS_QTSYMLINK = 0x02, |
| V9FS_QTLINK = 0x01, |
| V9FS_QTFILE = 0x00, |
| }; |
| |
| #define V9FS_NOTAG (u16)(~0) |
| #define V9FS_NOFID (u32)(~0) |
| #define V9FS_MAXWELEM 16 |
| |
| /* ample room for Twrite/Rread header (iounit) */ |
| #define V9FS_IOHDRSZ 24 |
| |
| struct v9fs_str { |
| u16 len; |
| char *str; |
| }; |
| |
| /* qids are the unique ID for a file (like an inode */ |
| struct v9fs_qid { |
| u8 type; |
| u32 version; |
| u64 path; |
| }; |
| |
| /* Plan 9 file metadata (stat) structure */ |
| struct v9fs_stat { |
| u16 size; |
| u16 type; |
| u32 dev; |
| struct v9fs_qid qid; |
| u32 mode; |
| u32 atime; |
| u32 mtime; |
| u64 length; |
| struct v9fs_str name; |
| struct v9fs_str uid; |
| struct v9fs_str gid; |
| struct v9fs_str muid; |
| struct v9fs_str extension; /* 9p2000.u extensions */ |
| u32 n_uid; /* 9p2000.u extensions */ |
| u32 n_gid; /* 9p2000.u extensions */ |
| u32 n_muid; /* 9p2000.u extensions */ |
| }; |
| |
| /* file metadata (stat) structure used to create Twstat message |
| The is similar to v9fs_stat, but the strings don't point to |
| the same memory block and should be freed separately |
| */ |
| struct v9fs_wstat { |
| u16 size; |
| u16 type; |
| u32 dev; |
| struct v9fs_qid qid; |
| u32 mode; |
| u32 atime; |
| u32 mtime; |
| u64 length; |
| char *name; |
| char *uid; |
| char *gid; |
| char *muid; |
| char *extension; /* 9p2000.u extensions */ |
| u32 n_uid; /* 9p2000.u extensions */ |
| u32 n_gid; /* 9p2000.u extensions */ |
| u32 n_muid; /* 9p2000.u extensions */ |
| }; |
| |
| /* Structures for Protocol Operations */ |
| |
| struct Tversion { |
| u32 msize; |
| struct v9fs_str version; |
| }; |
| |
| struct Rversion { |
| u32 msize; |
| struct v9fs_str version; |
| }; |
| |
| struct Tauth { |
| u32 afid; |
| struct v9fs_str uname; |
| struct v9fs_str aname; |
| }; |
| |
| struct Rauth { |
| struct v9fs_qid qid; |
| }; |
| |
| struct Rerror { |
| struct v9fs_str error; |
| u32 errno; /* 9p2000.u extension */ |
| }; |
| |
| struct Tflush { |
| u16 oldtag; |
| }; |
| |
| struct Rflush { |
| }; |
| |
| struct Tattach { |
| u32 fid; |
| u32 afid; |
| struct v9fs_str uname; |
| struct v9fs_str aname; |
| }; |
| |
| struct Rattach { |
| struct v9fs_qid qid; |
| }; |
| |
| struct Twalk { |
| u32 fid; |
| u32 newfid; |
| u16 nwname; |
| struct v9fs_str wnames[16]; |
| }; |
| |
| struct Rwalk { |
| u16 nwqid; |
| struct v9fs_qid wqids[16]; |
| }; |
| |
| struct Topen { |
| u32 fid; |
| u8 mode; |
| }; |
| |
| struct Ropen { |
| struct v9fs_qid qid; |
| u32 iounit; |
| }; |
| |
| struct Tcreate { |
| u32 fid; |
| struct v9fs_str name; |
| u32 perm; |
| u8 mode; |
| }; |
| |
| struct Rcreate { |
| struct v9fs_qid qid; |
| u32 iounit; |
| }; |
| |
| struct Tread { |
| u32 fid; |
| u64 offset; |
| u32 count; |
| }; |
| |
| struct Rread { |
| u32 count; |
| u8 *data; |
| }; |
| |
| struct Twrite { |
| u32 fid; |
| u64 offset; |
| u32 count; |
| u8 *data; |
| }; |
| |
| struct Rwrite { |
| u32 count; |
| }; |
| |
| struct Tclunk { |
| u32 fid; |
| }; |
| |
| struct Rclunk { |
| }; |
| |
| struct Tremove { |
| u32 fid; |
| }; |
| |
| struct Rremove { |
| }; |
| |
| struct Tstat { |
| u32 fid; |
| }; |
| |
| struct Rstat { |
| struct v9fs_stat stat; |
| }; |
| |
| struct Twstat { |
| u32 fid; |
| struct v9fs_stat stat; |
| }; |
| |
| struct Rwstat { |
| }; |
| |
| /* |
| * fcall is the primary packet structure |
| * |
| */ |
| |
| struct v9fs_fcall { |
| u32 size; |
| u8 id; |
| u16 tag; |
| void *sdata; |
| |
| union { |
| struct Tversion tversion; |
| struct Rversion rversion; |
| struct Tauth tauth; |
| struct Rauth rauth; |
| struct Rerror rerror; |
| struct Tflush tflush; |
| struct Rflush rflush; |
| struct Tattach tattach; |
| struct Rattach rattach; |
| struct Twalk twalk; |
| struct Rwalk rwalk; |
| struct Topen topen; |
| struct Ropen ropen; |
| struct Tcreate tcreate; |
| struct Rcreate rcreate; |
| struct Tread tread; |
| struct Rread rread; |
| struct Twrite twrite; |
| struct Rwrite rwrite; |
| struct Tclunk tclunk; |
| struct Rclunk rclunk; |
| struct Tremove tremove; |
| struct Rremove rremove; |
| struct Tstat tstat; |
| struct Rstat rstat; |
| struct Twstat twstat; |
| struct Rwstat rwstat; |
| } params; |
| }; |
| |
| #define PRINT_FCALL_ERROR(s, fcall) dprintk(DEBUG_ERROR, "%s: %.*s\n", s, \ |
| fcall?fcall->params.rerror.error.len:0, \ |
| fcall?fcall->params.rerror.error.str:""); |
| |
| int v9fs_t_version(struct v9fs_session_info *v9ses, u32 msize, |
| char *version, struct v9fs_fcall **rcall); |
| |
| int v9fs_t_attach(struct v9fs_session_info *v9ses, char *uname, char *aname, |
| u32 fid, u32 afid, struct v9fs_fcall **rcall); |
| |
| int v9fs_t_clunk(struct v9fs_session_info *v9ses, u32 fid); |
| |
| int v9fs_t_stat(struct v9fs_session_info *v9ses, u32 fid, |
| struct v9fs_fcall **rcall); |
| |
| int v9fs_t_wstat(struct v9fs_session_info *v9ses, u32 fid, |
| struct v9fs_wstat *wstat, struct v9fs_fcall **rcall); |
| |
| int v9fs_t_walk(struct v9fs_session_info *v9ses, u32 fid, u32 newfid, |
| char *name, struct v9fs_fcall **rcall); |
| |
| int v9fs_t_open(struct v9fs_session_info *v9ses, u32 fid, u8 mode, |
| struct v9fs_fcall **rcall); |
| |
| int v9fs_t_remove(struct v9fs_session_info *v9ses, u32 fid, |
| struct v9fs_fcall **rcall); |
| |
| int v9fs_t_create(struct v9fs_session_info *v9ses, u32 fid, char *name, |
| u32 perm, u8 mode, struct v9fs_fcall **rcall); |
| |
| int v9fs_t_read(struct v9fs_session_info *v9ses, u32 fid, |
| u64 offset, u32 count, struct v9fs_fcall **rcall); |
| |
| int v9fs_t_write(struct v9fs_session_info *v9ses, u32 fid, u64 offset, |
| u32 count, const char __user * data, |
| struct v9fs_fcall **rcall); |