9p: Reorganization of 9p file system code
This patchset moves non-filesystem interfaces of v9fs from fs/9p to net/9p. It moves the transport, packet marshalling and connection layers to net/9p leaving only the VFS related files in fs/9p. This work is being done in preparation for in-kernel 9p servers as well as alternate 9p clients (other than VFS). Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
This commit is contained in:
Latchesar Ionkov
committed by
Eric Van Hensbergen
Eric Van Hensbergen
parent
8d9107e8c5
commit
bd238fb431
417
include/net/9p/9p.h
Normal file
417
include/net/9p/9p.h
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@@ -0,0 +1,417 @@
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/*
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* include/net/9p/9p.h
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*
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* 9P protocol definitions.
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*
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* Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
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* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
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* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to:
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* Free Software Foundation
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* 51 Franklin Street, Fifth Floor
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* Boston, MA 02111-1301 USA
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*
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*/
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#ifndef NET_9P_H
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#define NET_9P_H
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#ifdef CONFIG_NET_9P_DEBUG
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#define P9_DEBUG_ERROR (1<<0)
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#define P9_DEBUG_9P (1<<2)
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#define P9_DEBUG_VFS (1<<3)
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#define P9_DEBUG_CONV (1<<4)
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#define P9_DEBUG_MUX (1<<5)
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#define P9_DEBUG_TRANS (1<<6)
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#define P9_DEBUG_SLABS (1<<7)
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#define P9_DEBUG_FCALL (1<<8)
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extern unsigned int p9_debug_level;
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#define P9_DPRINTK(level, format, arg...) \
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do { \
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if ((p9_debug_level & level) == level) \
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printk(KERN_NOTICE "-- %s (%d): " \
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format , __FUNCTION__, current->pid , ## arg); \
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} while (0)
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#define PRINT_FCALL_ERROR(s, fcall) P9_DPRINTK(P9_DEBUG_ERROR, \
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"%s: %.*s\n", s, fcall?fcall->params.rerror.error.len:0, \
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fcall?fcall->params.rerror.error.str:"");
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#else
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#define P9_DPRINTK(level, format, arg...) do { } while (0)
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#define PRINT_FCALL_ERROR(s, fcall) do { } while (0)
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#endif
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#define P9_EPRINTK(level, format, arg...) \
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do { \
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printk(level "9p: %s (%d): " \
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format , __FUNCTION__, current->pid , ## arg); \
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} while (0)
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/* Message Types */
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enum {
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P9_TVERSION = 100,
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P9_RVERSION,
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P9_TAUTH = 102,
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P9_RAUTH,
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P9_TATTACH = 104,
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P9_RATTACH,
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P9_TERROR = 106,
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P9_RERROR,
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P9_TFLUSH = 108,
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P9_RFLUSH,
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P9_TWALK = 110,
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P9_RWALK,
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P9_TOPEN = 112,
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P9_ROPEN,
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P9_TCREATE = 114,
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P9_RCREATE,
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P9_TREAD = 116,
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P9_RREAD,
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P9_TWRITE = 118,
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P9_RWRITE,
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P9_TCLUNK = 120,
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P9_RCLUNK,
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P9_TREMOVE = 122,
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P9_RREMOVE,
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P9_TSTAT = 124,
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P9_RSTAT,
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P9_TWSTAT = 126,
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P9_RWSTAT,
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};
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/* open modes */
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enum {
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P9_OREAD = 0x00,
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P9_OWRITE = 0x01,
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P9_ORDWR = 0x02,
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P9_OEXEC = 0x03,
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P9_OEXCL = 0x04,
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P9_OTRUNC = 0x10,
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P9_OREXEC = 0x20,
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P9_ORCLOSE = 0x40,
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P9_OAPPEND = 0x80,
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};
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/* permissions */
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enum {
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P9_DMDIR = 0x80000000,
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P9_DMAPPEND = 0x40000000,
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P9_DMEXCL = 0x20000000,
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P9_DMMOUNT = 0x10000000,
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P9_DMAUTH = 0x08000000,
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P9_DMTMP = 0x04000000,
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P9_DMSYMLINK = 0x02000000,
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P9_DMLINK = 0x01000000,
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/* 9P2000.u extensions */
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P9_DMDEVICE = 0x00800000,
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P9_DMNAMEDPIPE = 0x00200000,
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P9_DMSOCKET = 0x00100000,
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P9_DMSETUID = 0x00080000,
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P9_DMSETGID = 0x00040000,
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};
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/* qid.types */
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enum {
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P9_QTDIR = 0x80,
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P9_QTAPPEND = 0x40,
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P9_QTEXCL = 0x20,
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P9_QTMOUNT = 0x10,
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P9_QTAUTH = 0x08,
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P9_QTTMP = 0x04,
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P9_QTSYMLINK = 0x02,
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P9_QTLINK = 0x01,
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P9_QTFILE = 0x00,
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};
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#define P9_NOTAG (u16)(~0)
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#define P9_NOFID (u32)(~0)
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#define P9_MAXWELEM 16
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/* ample room for Twrite/Rread header */
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#define P9_IOHDRSZ 24
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struct p9_str {
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u16 len;
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char *str;
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};
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/* qids are the unique ID for a file (like an inode */
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struct p9_qid {
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u8 type;
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u32 version;
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u64 path;
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};
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/* Plan 9 file metadata (stat) structure */
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struct p9_stat {
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u16 size;
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u16 type;
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u32 dev;
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struct p9_qid qid;
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u32 mode;
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u32 atime;
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u32 mtime;
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u64 length;
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struct p9_str name;
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struct p9_str uid;
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struct p9_str gid;
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struct p9_str muid;
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struct p9_str extension; /* 9p2000.u extensions */
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u32 n_uid; /* 9p2000.u extensions */
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u32 n_gid; /* 9p2000.u extensions */
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u32 n_muid; /* 9p2000.u extensions */
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};
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/* file metadata (stat) structure used to create Twstat message
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The is similar to p9_stat, but the strings don't point to
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the same memory block and should be freed separately
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*/
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struct p9_wstat {
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u16 size;
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u16 type;
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u32 dev;
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struct p9_qid qid;
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u32 mode;
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u32 atime;
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u32 mtime;
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u64 length;
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char *name;
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char *uid;
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char *gid;
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char *muid;
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char *extension; /* 9p2000.u extensions */
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u32 n_uid; /* 9p2000.u extensions */
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u32 n_gid; /* 9p2000.u extensions */
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u32 n_muid; /* 9p2000.u extensions */
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};
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/* Structures for Protocol Operations */
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struct p9_tversion {
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u32 msize;
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struct p9_str version;
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};
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struct p9_rversion {
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u32 msize;
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struct p9_str version;
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};
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struct p9_tauth {
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u32 afid;
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struct p9_str uname;
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struct p9_str aname;
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};
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struct p9_rauth {
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struct p9_qid qid;
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};
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struct p9_rerror {
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struct p9_str error;
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u32 errno; /* 9p2000.u extension */
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};
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struct p9_tflush {
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u16 oldtag;
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};
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struct p9_rflush {
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};
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struct p9_tattach {
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u32 fid;
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u32 afid;
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struct p9_str uname;
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struct p9_str aname;
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};
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struct p9_rattach {
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struct p9_qid qid;
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};
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struct p9_twalk {
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u32 fid;
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u32 newfid;
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u16 nwname;
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struct p9_str wnames[16];
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};
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struct p9_rwalk {
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u16 nwqid;
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struct p9_qid wqids[16];
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};
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struct p9_topen {
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u32 fid;
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u8 mode;
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};
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struct p9_ropen {
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struct p9_qid qid;
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u32 iounit;
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};
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struct p9_tcreate {
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u32 fid;
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struct p9_str name;
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u32 perm;
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u8 mode;
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struct p9_str extension;
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};
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struct p9_rcreate {
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struct p9_qid qid;
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u32 iounit;
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};
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struct p9_tread {
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u32 fid;
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u64 offset;
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u32 count;
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};
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struct p9_rread {
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u32 count;
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u8 *data;
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};
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struct p9_twrite {
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u32 fid;
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u64 offset;
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u32 count;
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u8 *data;
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};
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struct p9_rwrite {
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u32 count;
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};
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struct p9_tclunk {
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u32 fid;
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};
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struct p9_rclunk {
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};
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struct p9_tremove {
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u32 fid;
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};
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struct p9_rremove {
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};
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struct p9_tstat {
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u32 fid;
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};
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struct p9_rstat {
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struct p9_stat stat;
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};
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struct p9_twstat {
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u32 fid;
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struct p9_stat stat;
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};
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struct p9_rwstat {
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};
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/*
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* fcall is the primary packet structure
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*
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*/
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struct p9_fcall {
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u32 size;
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u8 id;
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u16 tag;
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void *sdata;
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union {
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struct p9_tversion tversion;
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struct p9_rversion rversion;
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struct p9_tauth tauth;
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struct p9_rauth rauth;
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struct p9_rerror rerror;
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struct p9_tflush tflush;
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struct p9_rflush rflush;
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struct p9_tattach tattach;
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struct p9_rattach rattach;
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struct p9_twalk twalk;
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struct p9_rwalk rwalk;
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struct p9_topen topen;
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struct p9_ropen ropen;
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struct p9_tcreate tcreate;
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struct p9_rcreate rcreate;
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struct p9_tread tread;
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struct p9_rread rread;
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struct p9_twrite twrite;
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struct p9_rwrite rwrite;
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struct p9_tclunk tclunk;
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struct p9_rclunk rclunk;
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struct p9_tremove tremove;
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struct p9_rremove rremove;
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struct p9_tstat tstat;
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struct p9_rstat rstat;
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struct p9_twstat twstat;
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struct p9_rwstat rwstat;
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} params;
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};
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struct p9_idpool;
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int p9_deserialize_stat(void *buf, u32 buflen, struct p9_stat *stat,
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int dotu);
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int p9_deserialize_fcall(void *buf, u32 buflen, struct p9_fcall *fc, int dotu);
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void p9_set_tag(struct p9_fcall *fc, u16 tag);
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struct p9_fcall *p9_create_tversion(u32 msize, char *version);
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struct p9_fcall *p9_create_tattach(u32 fid, u32 afid, char *uname,
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char *aname);
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struct p9_fcall *p9_create_tauth(u32 afid, char *uname, char *aname);
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struct p9_fcall *p9_create_tflush(u16 oldtag);
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struct p9_fcall *p9_create_twalk(u32 fid, u32 newfid, u16 nwname,
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char **wnames);
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struct p9_fcall *p9_create_topen(u32 fid, u8 mode);
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struct p9_fcall *p9_create_tcreate(u32 fid, char *name, u32 perm, u8 mode,
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char *extension, int dotu);
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struct p9_fcall *p9_create_tread(u32 fid, u64 offset, u32 count);
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struct p9_fcall *p9_create_twrite(u32 fid, u64 offset, u32 count,
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const char *data);
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struct p9_fcall *p9_create_twrite_u(u32 fid, u64 offset, u32 count,
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const char __user *data);
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struct p9_fcall *p9_create_tclunk(u32 fid);
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struct p9_fcall *p9_create_tremove(u32 fid);
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struct p9_fcall *p9_create_tstat(u32 fid);
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struct p9_fcall *p9_create_twstat(u32 fid, struct p9_wstat *wstat,
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int dotu);
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int p9_printfcall(char *buf, int buflen, struct p9_fcall *fc, int dotu);
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int p9_errstr2errno(char *errstr, int len);
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struct p9_idpool *p9_idpool_create(void);
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void p9_idpool_destroy(struct p9_idpool *);
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int p9_idpool_get(struct p9_idpool *p);
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void p9_idpool_put(int id, struct p9_idpool *p);
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int p9_idpool_check(int id, struct p9_idpool *p);
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int p9_error_init(void);
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int p9_errstr2errno(char *, int);
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int __init p9_sysctl_register(void);
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void __exit p9_sysctl_unregister(void);
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#endif /* NET_9P_H */
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80
include/net/9p/client.h
Normal file
80
include/net/9p/client.h
Normal file
@@ -0,0 +1,80 @@
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/*
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* include/net/9p/client.h
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*
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* 9P Client Definitions
|
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*
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* Copyright (C) 2007 by Latchesar Ionkov <lucho@ionkov.net>
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*
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* This program is free software; you can redistribute it and/or modify
|
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* it under the terms of the GNU General Public License version 2
|
||||
* as published by the Free Software Foundation.
|
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*
|
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* 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
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*
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*/
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#ifndef NET_9P_CLIENT_H
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#define NET_9P_CLIENT_H
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struct p9_client {
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spinlock_t lock; /* protect client structure */
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int msize;
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unsigned char dotu;
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struct p9_transport *trans;
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struct p9_conn *conn;
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struct p9_idpool *fidpool;
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struct list_head fidlist;
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};
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struct p9_fid {
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struct p9_client *clnt;
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u32 fid;
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int mode;
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struct p9_qid qid;
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u32 iounit;
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uid_t uid;
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void *aux;
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int rdir_fpos;
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int rdir_pos;
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struct p9_fcall *rdir_fcall;
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struct list_head flist;
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struct list_head dlist; /* list of all fids attached to a dentry */
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};
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struct p9_client *p9_client_create(struct p9_transport *trans, int msize,
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int dotu);
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void p9_client_destroy(struct p9_client *clnt);
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void p9_client_disconnect(struct p9_client *clnt);
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struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
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char *uname, char *aname);
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struct p9_fid *p9_client_auth(struct p9_client *clnt, char *uname, char *aname);
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struct p9_fid *p9_client_walk(struct p9_fid *oldfid, int nwname, char **wnames,
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int clone);
|
||||
int p9_client_open(struct p9_fid *fid, int mode);
|
||||
int p9_client_fcreate(struct p9_fid *fid, char *name, u32 perm, int mode,
|
||||
char *extension);
|
||||
int p9_client_clunk(struct p9_fid *fid);
|
||||
int p9_client_remove(struct p9_fid *fid);
|
||||
int p9_client_read(struct p9_fid *fid, char *data, u64 offset, u32 count);
|
||||
int p9_client_readn(struct p9_fid *fid, char *data, u64 offset, u32 count);
|
||||
int p9_client_write(struct p9_fid *fid, char *data, u64 offset, u32 count);
|
||||
int p9_client_uread(struct p9_fid *fid, char __user *data, u64 offset,
|
||||
u32 count);
|
||||
int p9_client_uwrite(struct p9_fid *fid, const char __user *data, u64 offset,
|
||||
u32 count);
|
||||
struct p9_stat *p9_client_stat(struct p9_fid *fid);
|
||||
int p9_client_wstat(struct p9_fid *fid, struct p9_wstat *wst);
|
||||
struct p9_stat *p9_client_dirread(struct p9_fid *fid, u64 offset);
|
||||
|
||||
#endif /* NET_9P_CLIENT_H */
|
||||
57
include/net/9p/conn.h
Normal file
57
include/net/9p/conn.h
Normal file
@@ -0,0 +1,57 @@
|
||||
/*
|
||||
* include/net/9p/conn.h
|
||||
*
|
||||
* Connection Definitions
|
||||
*
|
||||
* Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
|
||||
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2
|
||||
* as published by the Free Software Foundation.
|
||||
*
|
||||
* 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
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef NET_9P_CONN_H
|
||||
#define NET_9P_CONN_H
|
||||
|
||||
#undef P9_NONBLOCK
|
||||
|
||||
struct p9_conn;
|
||||
struct p9_req;
|
||||
|
||||
/**
|
||||
* p9_mux_req_callback - callback function that is called when the
|
||||
* response of a request is received. The callback is called from
|
||||
* a workqueue and shouldn't block.
|
||||
*
|
||||
* @req - request
|
||||
* @a - the pointer that was specified when the request was send to be
|
||||
* passed to the callback
|
||||
*/
|
||||
typedef void (*p9_conn_req_callback)(struct p9_req *req, void *a);
|
||||
|
||||
struct p9_conn *p9_conn_create(struct p9_transport *trans, int msize,
|
||||
unsigned char *dotu);
|
||||
void p9_conn_destroy(struct p9_conn *);
|
||||
int p9_conn_rpc(struct p9_conn *m, struct p9_fcall *tc, struct p9_fcall **rc);
|
||||
|
||||
#ifdef P9_NONBLOCK
|
||||
int p9_conn_rpcnb(struct p9_conn *m, struct p9_fcall *tc,
|
||||
p9_conn_req_callback cb, void *a);
|
||||
#endif /* P9_NONBLOCK */
|
||||
|
||||
void p9_conn_cancel(struct p9_conn *m, int err);
|
||||
|
||||
#endif /* NET_9P_CONN_H */
|
||||
49
include/net/9p/transport.h
Normal file
49
include/net/9p/transport.h
Normal file
@@ -0,0 +1,49 @@
|
||||
/*
|
||||
* include/net/9p/transport.h
|
||||
*
|
||||
* Transport Definition
|
||||
*
|
||||
* Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
|
||||
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2
|
||||
* as published by the Free Software Foundation.
|
||||
*
|
||||
* 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
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef NET_9P_TRANSPORT_H
|
||||
#define NET_9P_TRANSPORT_H
|
||||
|
||||
enum p9_transport_status {
|
||||
Connected,
|
||||
Disconnected,
|
||||
Hung,
|
||||
};
|
||||
|
||||
struct p9_transport {
|
||||
enum p9_transport_status status;
|
||||
void *priv;
|
||||
|
||||
int (*write) (struct p9_transport *, void *, int);
|
||||
int (*read) (struct p9_transport *, void *, int);
|
||||
void (*close) (struct p9_transport *);
|
||||
unsigned int (*poll)(struct p9_transport *, struct poll_table_struct *);
|
||||
};
|
||||
|
||||
struct p9_transport *p9_trans_create_tcp(const char *addr, int port);
|
||||
struct p9_transport *p9_trans_create_unix(const char *addr);
|
||||
struct p9_transport *p9_trans_create_fd(int rfd, int wfd);
|
||||
|
||||
#endif /* NET_9P_TRANSPORT_H */
|
||||
Reference in New Issue
Block a user