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Date: Mon, 23 Jul 2007 22:12:54 +0200
From: Miklos Szeredi <miklos@...redi.hu>
To: linux-ext4@...r.kernel.org
CC: akpm@...ux-foundation.org
Subject: [PATCH 1/3] ext2: show all mount options
From: Miklos Szeredi <mszeredi@...e.cz>
Signed-off-by: Miklos Szeredi <mszeredi@...e.cz>
---
Index: linux-2.6/fs/ext2/super.c
===================================================================
--- linux-2.6.orig/fs/ext2/super.c 2007-07-23 17:41:29.000000000 +0200
+++ linux-2.6/fs/ext2/super.c 2007-07-23 18:02:38.000000000 +0200
@@ -203,10 +203,66 @@ static void ext2_clear_inode(struct inod
static int ext2_show_options(struct seq_file *seq, struct vfsmount *vfs)
{
- struct ext2_sb_info *sbi = EXT2_SB(vfs->mnt_sb);
+ struct super_block *sb = vfs->mnt_sb;
+ struct ext2_sb_info *sbi = EXT2_SB(sb);
+ struct ext2_super_block *es = sbi->s_es;
+ unsigned long def_mount_opts;
+
+ def_mount_opts = le32_to_cpu(es->s_default_mount_opts);
- if (sbi->s_mount_opt & EXT2_MOUNT_GRPID)
+ if (sbi->s_sb_block != 1)
+ seq_printf(seq, ",sb=%lu", sbi->s_sb_block);
+ if (test_opt(sb, MINIX_DF))
+ seq_puts(seq, ",minixdf");
+ if (test_opt(sb, GRPID))
seq_puts(seq, ",grpid");
+ if (!test_opt(sb, GRPID) && (def_mount_opts & EXT2_DEFM_BSDGROUPS))
+ seq_puts(seq, ",nogrpid");
+ if (sbi->s_resuid != EXT2_DEF_RESUID ||
+ le16_to_cpu(es->s_def_resuid) != EXT2_DEF_RESUID) {
+ seq_printf(seq, ",resuid=%u", sbi->s_resuid);
+ }
+ if (sbi->s_resgid != EXT2_DEF_RESGID ||
+ le16_to_cpu(es->s_def_resgid) != EXT2_DEF_RESGID) {
+ seq_printf(seq, ",resgid=%u", sbi->s_resgid);
+ }
+ if (test_opt(sb, ERRORS_CONT)) {
+ int def_errors = le16_to_cpu(es->s_errors);
+
+ if (def_errors == EXT2_ERRORS_PANIC ||
+ def_errors == EXT2_ERRORS_RO) {
+ seq_puts(seq, ",errors=continue");
+ }
+ }
+ if (test_opt(sb, ERRORS_RO))
+ seq_puts(seq, ",errors=remount-ro");
+ if (test_opt(sb, ERRORS_PANIC))
+ seq_puts(seq, ",errors=panic");
+ if (test_opt(sb, NO_UID32))
+ seq_puts(seq, ",nouid32");
+ if (test_opt(sb, DEBUG))
+ seq_puts(seq, ",debug");
+ if (test_opt(sb, OLDALLOC))
+ seq_puts(seq, ",oldalloc");
+
+#ifdef CONFIG_EXT2_FS_XATTR
+ if (test_opt(sb, XATTR_USER))
+ seq_puts(seq, ",user_xattr");
+ if (!test_opt(sb, XATTR_USER) &&
+ (def_mount_opts & EXT2_DEFM_XATTR_USER)) {
+ seq_puts(seq, ",nouser_xattr");
+ }
+#endif
+
+#ifdef CONFIG_EXT2_FS_POSIX_ACL
+ if (test_opt(sb, POSIX_ACL))
+ seq_puts(seq, ",acl");
+ if (!test_opt(sb, POSIX_ACL) && (def_mount_opts & EXT2_DEFM_ACL))
+ seq_puts(seq, ",noacl");
+#endif
+
+ if (test_opt(sb, NOBH))
+ seq_puts(seq, ",nobh");
#if defined(CONFIG_QUOTA)
if (sbi->s_mount_opt & EXT2_MOUNT_USRQUOTA)
@@ -658,6 +714,7 @@ static int ext2_fill_super(struct super_
if (!sbi)
return -ENOMEM;
sb->s_fs_info = sbi;
+ sbi->s_sb_block = sb_block;
/*
* See what the current blocksize for the device is, and
Index: linux-2.6/include/linux/ext2_fs_sb.h
===================================================================
--- linux-2.6.orig/include/linux/ext2_fs_sb.h 2007-07-23 17:41:29.000000000 +0200
+++ linux-2.6/include/linux/ext2_fs_sb.h 2007-07-23 18:01:40.000000000 +0200
@@ -39,6 +39,7 @@ struct ext2_sb_info {
struct ext2_super_block * s_es; /* Pointer to the super block in the buffer */
struct buffer_head ** s_group_desc;
unsigned long s_mount_opt;
+ unsigned long s_sb_block;
uid_t s_resuid;
gid_t s_resgid;
unsigned short s_mount_state;
-
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