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The following changes since commit 4cbe5a555f:

Browse source 
Linux 3.6-rc4 (2012-09-01 10:39:58 -0700)
 
 are available in the git repository at:
 
   git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs.git for-next
 
 for you to fetch changes up to 552aad02a283ee88406b102b4d6455eef7127196:
 
   9P: Fix race between p9_write_work() and p9_fd_request() (2012-09-17 14:54:11 -0500)
 
 ----------------------------------------------------------------
 Jeff Layton (1):
       9p: don't use __getname/__putname for uname/aname
 
 Jim Meyering (1):
       fs/9p: avoid debug OOPS when reading a long symlink
 
 Simon Derr (5):
       net/9p: Check errno validity
       9P: Fix race in p9_read_work()
       9P: fix test at the end of p9_write_work()
       9P: Fix race in p9_write_work()
       9P: Fix race between p9_write_work() and p9_fd_request()
 
  fs/9p/v9fs.c      |   30 +++++++++++++++++++-----------
  fs/9p/vfs_inode.c |    8 ++++----
  net/9p/client.c   |   18 ++++++++++++++++--
  net/9p/trans_fd.c |   38 ++++++++++++++++++++------------------
  4 files changed, 59 insertions(+), 35 deletions(-)
 
 Signed-off-by: Eric Van Hensbergen <[email protected]>
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Merge tag 'for-linus-merge-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs

Pull v9fs update from Eric Van Hensbergen.

* tag 'for-linus-merge-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  9P: Fix race between p9_write_work() and p9_fd_request()
  9P: Fix race in p9_write_work()
  9P: fix test at the end of p9_write_work()
  9P: Fix race in p9_read_work()
  9p: don't use __getname/__putname for uname/aname
  net/9p: Check errno validity
  fs/9p: avoid debug OOPS when reading a long symlink
This commit is contained in:
Linus Torvalds 2012-10-12 09:59:23 +09:00
commit 940e3a8dd6
4 changed files with 59 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

30
fs/9p/v9fs.c
View file

@ -184,10 +184,20 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
v9ses->afid = option;
break;
case Opt_uname:
match_strlcpy(v9ses->uname, &args[0], PATH_MAX);
kfree(v9ses->uname);
v9ses->uname = match_strdup(&args[0]);
if (!v9ses->uname) {
ret = -ENOMEM;
goto free_and_return;
}
break;
case Opt_remotename:
match_strlcpy(v9ses->aname, &args[0], PATH_MAX);
kfree(v9ses->aname);
v9ses->aname = match_strdup(&args[0]);
if (!v9ses->aname) {
ret = -ENOMEM;
goto free_and_return;
}
break;
case Opt_nodevmap:
v9ses->nodev = 1;
@ -287,21 +297,21 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
struct p9_fid *fid;
int rc;
v9ses->uname = __getname();
v9ses->uname = kstrdup(V9FS_DEFUSER, GFP_KERNEL);
if (!v9ses->uname)
return ERR_PTR(-ENOMEM);
v9ses->aname = __getname();
v9ses->aname = kstrdup(V9FS_DEFANAME, GFP_KERNEL);
if (!v9ses->aname) {
__putname(v9ses->uname);
kfree(v9ses->uname);
return ERR_PTR(-ENOMEM);
}
init_rwsem(&v9ses->rename_sem);
rc = bdi_setup_and_register(&v9ses->bdi, "9p", BDI_CAP_MAP_COPY);
if (rc) {
__putname(v9ses->aname);
__putname(v9ses->uname);
kfree(v9ses->aname);
kfree(v9ses->uname);
return ERR_PTR(rc);
}
@ -309,8 +319,6 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
list_add(&v9ses->slist, &v9fs_sessionlist);
spin_unlock(&v9fs_sessionlist_lock);
strcpy(v9ses->uname, V9FS_DEFUSER);
strcpy(v9ses->aname, V9FS_DEFANAME);
v9ses->uid = ~0;
v9ses->dfltuid = V9FS_DEFUID;
v9ses->dfltgid = V9FS_DEFGID;
@ -412,8 +420,8 @@ void v9fs_session_close(struct v9fs_session_info *v9ses)
kfree(v9ses->cachetag);
}
#endif
__putname(v9ses->uname);
__putname(v9ses->aname);
kfree(v9ses->uname);
kfree(v9ses->aname);
bdi_destroy(&v9ses->bdi);

8
fs/9p/vfs_inode.c
View file

@ -1276,12 +1276,12 @@ static int v9fs_readlink(struct dentry *dentry, char *buffer, int buflen)
}
/* copy extension buffer into buffer */
strncpy(buffer, st->extension, buflen);
retval = min(strlen(st->extension)+1, (size_t)buflen);
memcpy(buffer, st->extension, retval);
p9_debug(P9_DEBUG_VFS, "%s -> %s (%s)\n",
dentry->d_name.name, st->extension, buffer);
p9_debug(P9_DEBUG_VFS, "%s -> %s (%.*s)\n",
dentry->d_name.name, st->extension, buflen, buffer);
retval = strnlen(buffer, buflen);
done:
p9stat_free(st);
kfree(st);