[PATCH] reiserfs: fix handling of device names with /'s in them

On systems with block devices containing a slash (virtual dasd, cciss,
etc), reiserfs will fail to initialize /proc/fs/reiserfs/<dev> due to it
being interpreted as a subdirectory.  The generic block device code changes
the / to !  for use in the sysfs tree.  This patch uses that convention.

Tested by making dm devices use dm/<number> rather than dm-<number>

[akpm@osdl.org: name variables consistently]
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 21 insertions, 4 deletions

diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c
index 5d8a8cfebc70..c533ec1bcaec 100644
--- a/fs/reiserfs/procfs.c
+++ b/fs/reiserfs/procfs.c
@@ -492,9 +492,17 @@ static void add_file(struct super_block *sb, char *name,
 
 int reiserfs_proc_info_init(struct super_block *sb)
 {
+        char b[BDEVNAME_SIZE];
+        char *s;
+
+        /* Some block devices use /'s */
+        strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
+        s = strchr(b, '/');
+        if (s)
+                *s = '!';
+
         spin_lock_init(&__PINFO(sb).lock);
-        REISERFS_SB(sb)->procdir =
-            proc_mkdir(reiserfs_bdevname(sb), proc_info_root);
+        REISERFS_SB(sb)->procdir = proc_mkdir(b, proc_info_root);
         if (REISERFS_SB(sb)->procdir) {
                 REISERFS_SB(sb)->procdir->owner = THIS_MODULE;
                 REISERFS_SB(sb)->procdir->data = sb;
@@ -508,13 +516,22 @@ int reiserfs_proc_info_init(struct super_block *sb)
                 return 0;
         }
         reiserfs_warning(sb, "reiserfs: cannot create /proc/%s/%s",
-                         proc_info_root_name, reiserfs_bdevname(sb));
+                         proc_info_root_name, b);
         return 1;
 }
 
 int reiserfs_proc_info_done(struct super_block *sb)
 {
         struct proc_dir_entry *de = REISERFS_SB(sb)->procdir;
+        char b[BDEVNAME_SIZE];
+        char *s;
+
+        /* Some block devices use /'s */
+        strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
+        s = strchr(b, '/');
+        if (s)
+                *s = '!';
+
         if (de) {
                 remove_proc_entry("journal", de);
                 remove_proc_entry("oidmap", de);
@@ -528,7 +545,7 @@ int reiserfs_proc_info_done(struct super_block *sb)
         __PINFO(sb).exiting = 1;
         spin_unlock(&__PINFO(sb).lock);
         if (proc_info_root) {
-                remove_proc_entry(reiserfs_bdevname(sb), proc_info_root);
+                remove_proc_entry(b, proc_info_root);
                 REISERFS_SB(sb)->procdir = NULL;
         }
         return 0;