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Message-ID: <20080124204010.GD6724@cvg>
Date: Thu, 24 Jan 2008 23:40:10 +0300
From: Cyrill Gorcunov <gorcunov@...il.com>
To: Miklos Szeredi <miklos@...redi.hu>
Cc: akpm@...ux-foundation.org, linux-fsdevel@...r.kernel.org,
linux-kernel@...r.kernel.org, Jan Kara <jack@...e.cz>
Subject: Re: [patch 25/26] mount options: fix udf
[Miklos Szeredi - Thu, Jan 24, 2008 at 08:34:06PM +0100]
| From: Miklos Szeredi <mszeredi@...e.cz>
|
| Add a .show_options super operation to udf.
|
| Signed-off-by: Miklos Szeredi <mszeredi@...e.cz>
| ---
|
| Index: linux/fs/udf/super.c
| ===================================================================
| --- linux.orig/fs/udf/super.c 2008-01-24 13:48:37.000000000 +0100
| +++ linux/fs/udf/super.c 2008-01-24 15:58:21.000000000 +0100
| @@ -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_b
| 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
| .write_super = udf_write_super,
| .statfs = udf_statfs,
| .remount_fs = udf_remount_fs,
| + .show_options = udf_show_options,
| };
|
| struct udf_options {
| @@ -247,6 +253,56 @@ static int udf_sb_alloc_partition_maps(s
| 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);
| + /* is this correct? */
| + if (sbi->s_anchor[2] != 0)
| + seq_printf(seq, ",anchor=%u", sbi->s_anchor[2]);
btw, Miklos, i think you may strip off != and use just if (val)
form, like "if (sbi->s_umask)"
| + /*
| + * 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 +395,14 @@ 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 +472,15 @@ static int udf_parse_options(char *optio
| 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 +558,7 @@ static int udf_remount_fs(struct super_b
| 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 +1740,7 @@ static int udf_fill_super(struct super_b
|
| 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) &&
| Index: linux/fs/udf/udf_sb.h
| ===================================================================
| --- linux.orig/fs/udf/udf_sb.h 2008-01-24 13:48:37.000000000 +0100
| +++ linux/fs/udf/udf_sb.h 2008-01-24 13:51:08.000000000 +0100
| @@ -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
|
| --
|
- Cyrill -
--
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