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| author | Jeff Layton <jlayton@redhat.com> | 2010-12-07 02:10:35 -0500 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2010-12-07 19:25:37 +0000 |
| commit | 7d161b7f41e24203b54b0f18ae0d26c18a6c6fab (patch) | |
| tree | 10219d15bed51128f72e2e45fc58947071fed0c9 /fs/cifs | |
| parent | 03ceace5c6923ffbcf2b4d2e37afbffbdb5d4a67 (diff) | |
| download | linux-7d161b7f41e24203b54b0f18ae0d26c18a6c6fab.tar.gz linux-7d161b7f41e24203b54b0f18ae0d26c18a6c6fab.tar.bz2 linux-7d161b7f41e24203b54b0f18ae0d26c18a6c6fab.zip | |
cifs: allow calling cifs_build_path_to_root on incomplete cifs_sb
It's possible that cifs_mount will call cifs_build_path_to_root on a
newly instantiated cifs_sb. In that case, it's likely that the
master_tlink pointer has not yet been instantiated.
Fix this by having cifs_build_path_to_root take a cifsTconInfo pointer
as well, and have the caller pass that in.
Reported-and-Tested-by: Robbert Kouprie <robbert@exx.nl>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/cifsproto.h | 3 | ||||
| -rw-r--r-- | fs/cifs/connect.c | 2 | ||||
| -rw-r--r-- | fs/cifs/inode.c | 6 |
3 files changed, 6 insertions, 5 deletions
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 5523047b1ebd..e6d1481b16c1 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -54,7 +54,8 @@ do { \ __func__, curr_xid, (int)rc); \ } while (0) extern char *build_path_from_dentry(struct dentry *); -extern char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb); +extern char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb, + struct cifsTconInfo *tcon); extern char *build_wildcard_path_from_dentry(struct dentry *direntry); extern char *cifs_compose_mount_options(const char *sb_mountdata, const char *fullpath, const struct dfs_info3_param *ref, diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 387b91ae7400..cc1a8604a790 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -2833,7 +2833,7 @@ remote_path_check: /* check if a whole path (including prepath) is not remote */ if (!rc && cifs_sb->prepathlen && tcon) { /* build_path_to_root works only when we have a valid tcon */ - full_path = cifs_build_path_to_root(cifs_sb); + full_path = cifs_build_path_to_root(cifs_sb, tcon); if (full_path == NULL) { rc = -ENOMEM; goto mount_fail_check; diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index aa48521a78c1..589f3e3f6e00 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -728,12 +728,12 @@ static const struct inode_operations cifs_ipc_inode_ops = { .lookup = cifs_lookup, }; -char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb) +char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb, + struct cifsTconInfo *tcon) { int pplen = cifs_sb->prepathlen; int dfsplen; char *full_path = NULL; - struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb); /* if no prefix path, simply set path to the root of share to "" */ if (pplen == 0) { @@ -875,7 +875,7 @@ struct inode *cifs_root_iget(struct super_block *sb, unsigned long ino) char *full_path; struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb); - full_path = cifs_build_path_to_root(cifs_sb); + full_path = cifs_build_path_to_root(cifs_sb, tcon); if (full_path == NULL) return ERR_PTR(-ENOMEM); |