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Commit 488b5ec8 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs 

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  9p: fix p9_printfcall export
  9p: transport API reorganization
  9p: add remove function to trans_virtio
  9p: Convert semaphore to spinlock for p9_idpool
  9p: fix mmap to be read-only
  9p: add support for sticky bit
  9p: Fix soft lockup in virtio transport
  9p: fix bug in attach-per-user
  9p: block-based virtio client
  9p: create transport rpc cut-thru
  9p: fix bug in p9_clone_stat
parents a80a438b 72767443

fs/9p/fid.c

+2 −2
Original line number Diff line number Diff line
@@ -175,7 +175,7 @@ struct p9_fid *v9fs_fid_lookup(struct dentry *dentry) 
	if (!wnames)

		return ERR_PTR(-ENOMEM);



	for (d = dentry, i = n; i >= 0; i--, d = d->d_parent)

	for (d = dentry, i = (n-1); i >= 0; i--, d = d->d_parent)

		wnames[i] = (char *) d->d_name.name;



	clone = 1;
@@ -183,7 +183,7 @@ struct p9_fid *v9fs_fid_lookup(struct dentry *dentry) 
	while (i < n) {

		l = min(n - i, P9_MAXWELEM);

		fid = p9_client_walk(fid, l, &wnames[i], clone);

		if (!fid) {

		if (IS_ERR(fid)) {

			kfree(wnames);

			return fid;

		}

fs/9p/v9fs.c

+11 −40
Original line number Diff line number Diff line
@@ -3,7 +3,7 @@ 
 *

 *  This file contains functions assisting in mapping VFS to 9P2000

 *

 *  Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>

 *  Copyright (C) 2004-2008 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
@@ -31,7 +31,6 @@ 
#include <linux/idr.h>

#include <net/9p/9p.h>

#include <net/9p/transport.h>

#include <net/9p/conn.h>

#include <net/9p/client.h>

#include "v9fs.h"

#include "v9fs_vfs.h"
@@ -43,11 +42,11 @@ 


enum {

	/* Options that take integer arguments */

	Opt_debug, Opt_msize, Opt_dfltuid, Opt_dfltgid, Opt_afid,

	Opt_debug, Opt_dfltuid, Opt_dfltgid, Opt_afid,

	/* String options */

	Opt_uname, Opt_remotename, Opt_trans,

	/* Options that take no arguments */

	Opt_legacy, Opt_nodevmap,

	Opt_nodevmap,

	/* Cache options */

	Opt_cache_loose,

	/* Access options */
@@ -58,14 +57,11 @@ enum { 


static match_table_t tokens = {

	{Opt_debug, "debug=%x"},

	{Opt_msize, "msize=%u"},

	{Opt_dfltuid, "dfltuid=%u"},

	{Opt_dfltgid, "dfltgid=%u"},

	{Opt_afid, "afid=%u"},

	{Opt_uname, "uname=%s"},

	{Opt_remotename, "aname=%s"},

	{Opt_trans, "trans=%s"},

	{Opt_legacy, "noextend"},

	{Opt_nodevmap, "nodevmap"},

	{Opt_cache_loose, "cache=loose"},

	{Opt_cache_loose, "loose"},
@@ -85,16 +81,14 @@ static void v9fs_parse_options(struct v9fs_session_info *v9ses) 
	char *options;

	substring_t args[MAX_OPT_ARGS];

	char *p;

	int option;

	int ret;

	int option = 0;

	char *s, *e;

	int ret;



	/* setup defaults */

	v9ses->maxdata = 8192;

	v9ses->afid = ~0;

	v9ses->debug = 0;

	v9ses->cache = 0;

	v9ses->trans = v9fs_default_trans();



	if (!v9ses->options)

		return;
@@ -106,7 +100,8 @@ static void v9fs_parse_options(struct v9fs_session_info *v9ses) 
			continue;

		token = match_token(p, tokens, args);

		if (token < Opt_uname) {

			if ((ret = match_int(&args[0], &option)) < 0) {

			ret = match_int(&args[0], &option);

			if (ret < 0) {

				P9_DPRINTK(P9_DEBUG_ERROR,

					"integer field, but no integer?\n");

				continue;
@@ -119,9 +114,7 @@ static void v9fs_parse_options(struct v9fs_session_info *v9ses) 
			p9_debug_level = option;

#endif

			break;

		case Opt_msize:

			v9ses->maxdata = option;

			break;



		case Opt_dfltuid:

			v9ses->dfltuid = option;

			break;
@@ -131,18 +124,12 @@ static void v9fs_parse_options(struct v9fs_session_info *v9ses) 
		case Opt_afid:

			v9ses->afid = option;

			break;

		case Opt_trans:

			v9ses->trans = v9fs_match_trans(&args[0]);

			break;

		case Opt_uname:

			match_strcpy(v9ses->uname, &args[0]);

			break;

		case Opt_remotename:

			match_strcpy(v9ses->aname, &args[0]);

			break;

		case Opt_legacy:

			v9ses->flags &= ~V9FS_EXTENDED;

			break;

		case Opt_nodevmap:

			v9ses->nodev = 1;

			break;
@@ -185,7 +172,6 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses, 
		  const char *dev_name, char *data)

{

	int retval = -EINVAL;

	struct p9_trans *trans = NULL;

	struct p9_fid *fid;



	v9ses->uname = __getname();
@@ -207,24 +193,7 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses, 
	v9ses->options = kstrdup(data, GFP_KERNEL);

	v9fs_parse_options(v9ses);



	if (v9ses->trans == NULL) {

		retval = -EPROTONOSUPPORT;

		P9_DPRINTK(P9_DEBUG_ERROR,

				"No transport defined or default transport\n");

		goto error;

	}



	trans = v9ses->trans->create(dev_name, v9ses->options);

	if (IS_ERR(trans)) {

		retval = PTR_ERR(trans);

		trans = NULL;

		goto error;

	}

	if ((v9ses->maxdata+P9_IOHDRSZ) > v9ses->trans->maxsize)

		v9ses->maxdata = v9ses->trans->maxsize-P9_IOHDRSZ;



	v9ses->clnt = p9_client_create(trans, v9ses->maxdata+P9_IOHDRSZ,

		v9fs_extended(v9ses));

	v9ses->clnt = p9_client_create(dev_name, v9ses->options);



	if (IS_ERR(v9ses->clnt)) {

		retval = PTR_ERR(v9ses->clnt);
@@ -236,6 +205,8 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses, 
	if (!v9ses->clnt->dotu)

		v9ses->flags &= ~V9FS_EXTENDED;



	v9ses->maxdata = v9ses->clnt->msize;



	/* for legacy mode, fall back to V9FS_ACCESS_ANY */

	if (!v9fs_extended(v9ses) &&

		((v9ses->flags&V9FS_ACCESS_MASK) == V9FS_ACCESS_USER)) {

fs/9p/v9fs.h

+2 −3
Original line number Diff line number Diff line 
/*

 * V9FS definitions.

 *

 *  Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>

 *  Copyright (C) 2004-2008 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
@@ -28,7 +28,6 @@ 


struct v9fs_session_info {

	/* options */

	unsigned int maxdata;

	unsigned char flags;	/* session flags */

	unsigned char nodev;	/* set to 1 if no disable device mapping */

	unsigned short debug;	/* debug level */
@@ -38,10 +37,10 @@ struct v9fs_session_info { 
	char *options;		/* copy of mount options */

	char *uname;		/* user name to mount as */

	char *aname;		/* name of remote hierarchy being mounted */

	unsigned int maxdata;	/* max data for client interface */

	unsigned int dfltuid;	/* default uid/muid for legacy support */

	unsigned int dfltgid;	/* default gid for legacy support */

	u32 uid;		/* if ACCESS_SINGLE, the uid that has access */

	struct p9_trans_module *trans; /* 9p transport */

	struct p9_client *clnt;	/* 9p client */

	struct dentry *debugfs_dir;

};

fs/9p/vfs_file.c

+2 −2
Original line number Diff line number Diff line
@@ -184,7 +184,7 @@ static const struct file_operations v9fs_cached_file_operations = { 
	.open = v9fs_file_open,

	.release = v9fs_dir_release,

	.lock = v9fs_file_lock,

	.mmap = generic_file_mmap,

	.mmap = generic_file_readonly_mmap,

};



const struct file_operations v9fs_file_operations = {
@@ -194,5 +194,5 @@ const struct file_operations v9fs_file_operations = { 
	.open = v9fs_file_open,

	.release = v9fs_dir_release,

	.lock = v9fs_file_lock,

	.mmap = generic_file_mmap,

	.mmap = generic_file_readonly_mmap,

};

fs/9p/vfs_inode.c

+5 −0
Original line number Diff line number Diff line
@@ -77,6 +77,8 @@ static int unixmode2p9mode(struct v9fs_session_info *v9ses, int mode) 
			res |= P9_DMSETUID;

		if ((mode & S_ISGID) == S_ISGID)

			res |= P9_DMSETGID;

		if ((mode & S_ISVTX) == S_ISVTX)

			res |= P9_DMSETVTX;

		if ((mode & P9_DMLINK))

			res |= P9_DMLINK;

	}
@@ -119,6 +121,9 @@ static int p9mode2unixmode(struct v9fs_session_info *v9ses, int mode) 


		if ((mode & P9_DMSETGID) == P9_DMSETGID)

			res |= S_ISGID;



		if ((mode & P9_DMSETVTX) == P9_DMSETVTX)

			res |= S_ISVTX;

	}



	return res;