[PATCH] hfs: show_options support

This adds support for show_options.  It also fixes some namespace polution in
the hfsplus driver.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 24 insertions, 2 deletions

diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c
index 1cca0102c98..cca0818aa4c 100644
--- a/fs/hfsplus/options.c
+++ b/fs/hfsplus/options.c
@@ -13,6 +13,8 @@
 #include <linux/sched.h>
 #include <linux/parser.h>
 #include <linux/nls.h>
+#include <linux/mount.h>
+#include <linux/seq_file.h>
 #include "hfsplus_fs.h"
 
 enum {
@@ -38,7 +40,7 @@ static match_table_t tokens = {
 };
 
 /* Initialize an options object to reasonable defaults */
-void fill_defaults(struct hfsplus_sb_info *opts)
+void hfsplus_fill_defaults(struct hfsplus_sb_info *opts)
 {
         if (!opts)
                 return;
@@ -63,7 +65,7 @@ static inline int match_fourchar(substring_t *arg, u32 *result)
 
 /* Parse options from mount. Returns 0 on failure */
 /* input is the options passed to mount() as a string */
-int parse_options(char *input, struct hfsplus_sb_info *sbi)
+int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi)
 {
         char *p;
         substring_t args[MAX_OPT_ARGS];
@@ -160,3 +162,23 @@ done:
 
         return 1;
 }
+
+int hfsplus_show_options(struct seq_file *seq, struct vfsmount *mnt)
+{
+        struct hfsplus_sb_info *sbi = &HFSPLUS_SB(mnt->mnt_sb);
+
+        if (sbi->creator != HFSPLUS_DEF_CR_TYPE)
+                seq_printf(seq, ",creator=%.4s", (char *)&sbi->creator);
+        if (sbi->type != HFSPLUS_DEF_CR_TYPE)
+                seq_printf(seq, ",type=%.4s", (char *)&sbi->type);
+        seq_printf(seq, ",umask=%o,uid=%u,gid=%u", sbi->umask, sbi->uid, sbi->gid);
+        if (sbi->part >= 0)
+                seq_printf(seq, ",part=%u", sbi->part);
+        if (sbi->session >= 0)
+                seq_printf(seq, ",session=%u", sbi->session);
+        if (sbi->nls)
+                seq_printf(seq, ",nls=%s", sbi->nls->charset);
+        if (sbi->flags & HFSPLUS_SB_NODECOMPOSE)
+                seq_printf(seq, ",nodecompose");
+        return 0;
+}