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mount options: fix udf 

Add a .show_options super operation to udf.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Acked-by: Cyrill Gorcunov <gorcunov@gmail.com>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Miklos Szeredi 2008-02-08 04:21:50 -08:00 committed by Linus Torvalds
parent b76db73540
commit 6da80894cc
2 changed files with 72 additions and 4 deletions
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74
fs/udf/super.c
View File

@ -53,6 +53,8 @@
#include <linux/vfs.h>
#include <linux/vmalloc.h>
#include <linux/errno.h>
#include <linux/mount.h>
#include <linux/seq_file.h>
#include <asm/byteorder.h>
#include <linux/udf_fs.h>
@ -71,6 +73,8 @@
#define VDS_POS_TERMINATING_DESC 6
#define VDS_POS_LENGTH 7
#define UDF_DEFAULT_BLOCKSIZE 2048
static char error_buf[1024];
/* These are the "meat" - everything else is stuffing */
@ -95,6 +99,7 @@ static void udf_open_lvid(struct super_block *);
static void udf_close_lvid(struct super_block *);
static unsigned int udf_count_free(struct super_block *);
static int udf_statfs(struct dentry *, struct kstatfs *);
static int udf_show_options(struct seq_file *, struct vfsmount *);
struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi)
{
@ -181,6 +186,7 @@ static const struct super_operations udf_sb_ops = {
.write_super = udf_write_super,
.statfs = udf_statfs,
.remount_fs = udf_remount_fs,
.show_options = udf_show_options,
};
struct udf_options {
@ -247,6 +253,61 @@ static int udf_sb_alloc_partition_maps(struct super_block *sb, u32 count)
return 0;
}
static int udf_show_options(struct seq_file *seq, struct vfsmount *mnt)
{
struct super_block *sb = mnt->mnt_sb;
struct udf_sb_info *sbi = UDF_SB(sb);
if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT))
seq_puts(seq, ",nostrict");
if (sb->s_blocksize != UDF_DEFAULT_BLOCKSIZE)
seq_printf(seq, ",bs=%lu", sb->s_blocksize);
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UNHIDE))
seq_puts(seq, ",unhide");
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UNDELETE))
seq_puts(seq, ",undelete");
if (!UDF_QUERY_FLAG(sb, UDF_FLAG_USE_AD_IN_ICB))
seq_puts(seq, ",noadinicb");
if (UDF_QUERY_FLAG(sb, UDF_FLAG_USE_SHORT_AD))
seq_puts(seq, ",shortad");
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_FORGET))
seq_puts(seq, ",uid=forget");
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_IGNORE))
seq_puts(seq, ",uid=ignore");
if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_FORGET))
seq_puts(seq, ",gid=forget");
if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_IGNORE))
seq_puts(seq, ",gid=ignore");
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_SET))
seq_printf(seq, ",uid=%u", sbi->s_uid);
if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_SET))
seq_printf(seq, ",gid=%u", sbi->s_gid);
if (sbi->s_umask != 0)
seq_printf(seq, ",umask=%o", sbi->s_umask);
if (UDF_QUERY_FLAG(sb, UDF_FLAG_SESSION_SET))
seq_printf(seq, ",session=%u", sbi->s_session);
if (UDF_QUERY_FLAG(sb, UDF_FLAG_LASTBLOCK_SET))
seq_printf(seq, ",lastblock=%u", sbi->s_last_block);
/*
* s_anchor[2] could be zeroed out in case there is no anchor
* in the specified block, but then the "anchor=N" option
* originally given by the user wasn't effective, so it's OK
* if we don't show it.
*/
if (sbi->s_anchor[2] != 0)
seq_printf(seq, ",anchor=%u", sbi->s_anchor[2]);
/*
* volume, partition, fileset and rootdir seem to be ignored
* currently
*/
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8))
seq_puts(seq, ",utf8");
if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP) && sbi->s_nls_map)
seq_printf(seq, ",iocharset=%s", sbi->s_nls_map->charset);
return 0;
}
/*
* udf_parse_options
*
@ -339,13 +400,14 @@ static match_table_t tokens = {
{Opt_err, NULL}
};
static int udf_parse_options(char *options, struct udf_options *uopt)
static int udf_parse_options(char *options, struct udf_options *uopt,
bool remount)
{
char *p;
int option;
uopt->novrs = 0;
uopt->blocksize = 2048;
uopt->blocksize = UDF_DEFAULT_BLOCKSIZE;
uopt->partition = 0xFFFF;
uopt->session = 0xFFFFFFFF;
uopt->lastblock = 0;
@ -415,11 +477,15 @@ static int udf_parse_options(char *options, struct udf_options *uopt)
if (match_int(args, &option))
return 0;
uopt->session = option;
if (!remount)
uopt->flags |= (1 << UDF_FLAG_SESSION_SET);
break;
case Opt_lastblock:
if (match_int(args, &option))
return 0;
uopt->lastblock = option;
if (!remount)
uopt->flags |= (1 << UDF_FLAG_LASTBLOCK_SET);
break;
case Opt_anchor:
if (match_int(args, &option))
@ -497,7 +563,7 @@ static int udf_remount_fs(struct super_block *sb, int *flags, char *options)
uopt.gid = sbi->s_gid;
uopt.umask = sbi->s_umask;
if (!udf_parse_options(options, &uopt))
if (!udf_parse_options(options, &uopt, true))
return -EINVAL;
sbi->s_flags = uopt.flags;
@ -1679,7 +1745,7 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
mutex_init(&sbi->s_alloc_mutex);
if (!udf_parse_options((char *)options, &uopt))
if (!udf_parse_options((char *)options, &uopt, false))
goto error_out;
if (uopt.flags & (1 << UDF_FLAG_UTF8) &&

2
fs/udf/udf_sb.h
View File

@ -26,6 +26,8 @@
#define UDF_FLAG_GID_IGNORE 14
#define UDF_FLAG_UID_SET 15
#define UDF_FLAG_GID_SET 16
#define UDF_FLAG_SESSION_SET 17
#define UDF_FLAG_LASTBLOCK_SET 18
#define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
#define UDF_PART_FLAG_UNALLOC_TABLE 0x0002