[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>
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index ab783f6..fd78414 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -15,8 +15,10 @@
#include <linux/config.h>
#include <linux/module.h>
#include <linux/blkdev.h>
+#include <linux/mount.h>
#include <linux/init.h>
#include <linux/parser.h>
+#include <linux/seq_file.h>
#include <linux/vfs.h>
#include "hfs_fs.h"
@@ -111,6 +113,28 @@
return 0;
}
+static int hfs_show_options(struct seq_file *seq, struct vfsmount *mnt)
+{
+ struct hfs_sb_info *sbi = HFS_SB(mnt->mnt_sb);
+
+ if (sbi->s_creator != cpu_to_be32(0x3f3f3f3f))
+ seq_printf(seq, ",creator=%.4s", (char *)&sbi->s_creator);
+ if (sbi->s_type != cpu_to_be32(0x3f3f3f3f))
+ seq_printf(seq, ",type=%.4s", (char *)&sbi->s_type);
+ seq_printf(seq, ",uid=%u,gid=%u", sbi->s_uid, sbi->s_gid);
+ if (sbi->s_file_umask != 0133)
+ seq_printf(seq, ",file_umask=%o", sbi->s_file_umask);
+ if (sbi->s_dir_umask != 0022)
+ seq_printf(seq, ",dir_umask=%o", sbi->s_dir_umask);
+ if (sbi->part >= 0)
+ seq_printf(seq, ",part=%u", sbi->part);
+ if (sbi->session >= 0)
+ seq_printf(seq, ",session=%u", sbi->session);
+ if (sbi->s_quiet)
+ seq_printf(seq, ",quiet");
+ return 0;
+}
+
static struct inode *hfs_alloc_inode(struct super_block *sb)
{
struct hfs_inode_info *i;
@@ -133,6 +157,7 @@
.write_super = hfs_write_super,
.statfs = hfs_statfs,
.remount_fs = hfs_remount,
+ .show_options = hfs_show_options,
};
enum {
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h
index 533094a..2bc0cdd 100644
--- a/fs/hfsplus/hfsplus_fs.h
+++ b/fs/hfsplus/hfsplus_fs.h
@@ -343,8 +343,9 @@
ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size);
/* options.c */
-int parse_options(char *, struct hfsplus_sb_info *);
-void fill_defaults(struct hfsplus_sb_info *);
+int hfsplus_parse_options(char *, struct hfsplus_sb_info *);
+void hfsplus_fill_defaults(struct hfsplus_sb_info *);
+int hfsplus_show_options(struct seq_file *, struct vfsmount *);
/* tables.c */
extern u16 hfsplus_case_fold_table[];
diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c
index 1cca010..cca0818 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 @@
};
/* 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 @@
/* 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 @@
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;
+}
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index d55ad67..b068995 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -277,6 +277,7 @@
.write_super = hfsplus_write_super,
.statfs = hfsplus_statfs,
.remount_fs = hfsplus_remount,
+ .show_options = hfsplus_show_options,
};
static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
@@ -297,8 +298,8 @@
memset(sbi, 0, sizeof(HFSPLUS_SB(sb)));
sb->s_fs_info = sbi;
INIT_HLIST_HEAD(&sbi->rsrc_inodes);
- fill_defaults(sbi);
- if (!parse_options(data, sbi)) {
+ hfsplus_fill_defaults(sbi);
+ if (!hfsplus_parse_options(data, sbi)) {
if (!silent)
printk("HFS+-fs: unable to parse mount options\n");
err = -EINVAL;