1 files changed, 81 insertions, 11 deletions

diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 3c3c6e399fb3..a93c3609025d 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -35,6 +35,7 @@
 #include <linux/mount.h>
 #include <linux/namei.h>
 #include <linux/quotaops.h>
+#include <linux/seq_file.h>
 #include <asm/uaccess.h>
 #include "xattr.h"
 #include "acl.h"
@@ -509,8 +510,41 @@ static void ext3_clear_inode(struct inode *inode)
         kfree(rsv);
 }
 
-#ifdef CONFIG_QUOTA
+static int ext3_show_options(struct seq_file *seq, struct vfsmount *vfs)
+{
+        struct ext3_sb_info *sbi = EXT3_SB(vfs->mnt_sb);
+
+        if (sbi->s_mount_opt & EXT3_MOUNT_JOURNAL_DATA)
+                seq_puts(seq, ",data=journal");
+
+        if (sbi->s_mount_opt & EXT3_MOUNT_ORDERED_DATA)
+                seq_puts(seq, ",data=ordered");
+
+        if (sbi->s_mount_opt & EXT3_MOUNT_WRITEBACK_DATA)
+                seq_puts(seq, ",data=writeback");
+
+#if defined(CONFIG_QUOTA)
+        if (sbi->s_jquota_fmt)
+                seq_printf(seq, ",jqfmt=%s",
+                (sbi->s_jquota_fmt == QFMT_VFS_OLD) ? "vfsold": "vfsv0");
+
+        if (sbi->s_qf_names[USRQUOTA])
+                seq_printf(seq, ",usrjquota=%s", sbi->s_qf_names[USRQUOTA]);
+
+        if (sbi->s_qf_names[GRPQUOTA])
+                seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]);
 
+        if (sbi->s_mount_opt & EXT3_MOUNT_USRQUOTA)
+                seq_puts(seq, ",usrquota");
+
+        if (sbi->s_mount_opt & EXT3_MOUNT_GRPQUOTA)
+                seq_puts(seq, ",grpquota");
+#endif
+
+        return 0;
+}
+
+#ifdef CONFIG_QUOTA
 #define QTYPE2NAME(t) ((t)==USRQUOTA?"user":"group")
 #define QTYPE2MOPT(on, t) ((t)==USRQUOTA?((on)##USRJQUOTA):((on)##GRPJQUOTA))
 
@@ -569,6 +603,7 @@ static struct super_operations ext3_sops = {
         .statfs         = ext3_statfs,
         .remount_fs     = ext3_remount,
         .clear_inode    = ext3_clear_inode,
+        .show_options   = ext3_show_options,
 #ifdef CONFIG_QUOTA
         .quota_read     = ext3_quota_read,
         .quota_write    = ext3_quota_write,
@@ -590,7 +625,8 @@ enum {
         Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
         Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
         Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
-        Opt_ignore, Opt_barrier, Opt_err, Opt_resize,
+        Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota,
+        Opt_grpquota
 };
 
 static match_table_t tokens = {
@@ -634,10 +670,10 @@ static match_table_t tokens = {
         {Opt_grpjquota, "grpjquota=%s"},
         {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
         {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
-        {Opt_quota, "grpquota"},
+        {Opt_grpquota, "grpquota"},
         {Opt_noquota, "noquota"},
         {Opt_quota, "quota"},
-        {Opt_quota, "usrquota"},
+        {Opt_usrquota, "usrquota"},
         {Opt_barrier, "barrier=%u"},
         {Opt_err, NULL},
         {Opt_resize, "resize"},
@@ -903,7 +939,13 @@ clear_qf_name:
                         sbi->s_jquota_fmt = QFMT_VFS_V0;
                         break;
                 case Opt_quota:
+                case Opt_usrquota:
                         set_opt(sbi->s_mount_opt, QUOTA);
+                        set_opt(sbi->s_mount_opt, USRQUOTA);
+                        break;
+                case Opt_grpquota:
+                        set_opt(sbi->s_mount_opt, QUOTA);
+                        set_opt(sbi->s_mount_opt, GRPQUOTA);
                         break;
                 case Opt_noquota:
                         if (sb_any_quota_enabled(sb)) {
@@ -912,8 +954,13 @@ clear_qf_name:
                                 return 0;
                         }
                         clear_opt(sbi->s_mount_opt, QUOTA);
+                        clear_opt(sbi->s_mount_opt, USRQUOTA);
+                        clear_opt(sbi->s_mount_opt, GRPQUOTA);
                         break;
 #else
+                case Opt_quota:
+                case Opt_usrquota:
+                case Opt_grpquota:
                 case Opt_usrjquota:
                 case Opt_grpjquota:
                 case Opt_offusrjquota:
@@ -924,7 +971,6 @@ clear_qf_name:
                                 "EXT3-fs: journalled quota options not "
                                 "supported.\n");
                         break;
-                case Opt_quota:
                 case Opt_noquota:
                         break;
 #endif
@@ -962,14 +1008,38 @@ clear_qf_name:
                 }
         }
 #ifdef CONFIG_QUOTA
-        if (!sbi->s_jquota_fmt && (sbi->s_qf_names[USRQUOTA] ||
-            sbi->s_qf_names[GRPQUOTA])) {
-                printk(KERN_ERR
-                        "EXT3-fs: journalled quota format not specified.\n");
-                return 0;
+        if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
+                if ((sbi->s_mount_opt & EXT3_MOUNT_USRQUOTA) &&
+                     sbi->s_qf_names[USRQUOTA])
+                        clear_opt(sbi->s_mount_opt, USRQUOTA);
+
+                if ((sbi->s_mount_opt & EXT3_MOUNT_GRPQUOTA) &&
+                     sbi->s_qf_names[GRPQUOTA])
+                        clear_opt(sbi->s_mount_opt, GRPQUOTA);
+
+                if ((sbi->s_qf_names[USRQUOTA] &&
+                                (sbi->s_mount_opt & EXT3_MOUNT_GRPQUOTA)) ||
+                    (sbi->s_qf_names[GRPQUOTA] &&
+                                (sbi->s_mount_opt & EXT3_MOUNT_USRQUOTA))) {
+                        printk(KERN_ERR "EXT3-fs: old and new quota "
+                                        "format mixing.\n");
+                        return 0;
+                }
+
+                if (!sbi->s_jquota_fmt) {
+                        printk(KERN_ERR "EXT3-fs: journalled quota format "
+                                        "not specified.\n");
+                        return 0;
+                }
+        } else {
+                if (sbi->s_jquota_fmt) {
+                        printk(KERN_ERR "EXT3-fs: journalled quota format "
+                                        "specified with no journalling "
+                                        "enabled.\n");
+                        return 0;
+                }
         }
 #endif
-
         return 1;
 }