reiserfs: Properly display mount options in /proc/mounts

Make reiserfs properly display mount options in /proc/mounts.

CC: reiserfs-devel@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

4 files changed, 204 insertions, 14 deletions

diff --git a/fs/reiserfs/bitmap.c b/fs/reiserfs/bitmap.c
index d1aca1df4f92..a945cd265228 100644
--- a/fs/reiserfs/bitmap.c
+++ b/fs/reiserfs/bitmap.c
@@ -13,6 +13,7 @@
 #include <linux/reiserfs_fs_sb.h>
 #include <linux/reiserfs_fs_i.h>
 #include <linux/quotaops.h>
+#include <linux/seq_file.h>
 
 #define PREALLOCATION_SIZE 9
 
@@ -634,6 +635,96 @@ int reiserfs_parse_alloc_options(struct super_block *s, char *options)
         return 0;
 }
 
+static void print_sep(struct seq_file *seq, int *first)
+{
+        if (!*first)
+                seq_puts(seq, ":");
+        else
+                *first = 0;
+}
+
+void show_alloc_options(struct seq_file *seq, struct super_block *s)
+{
+        int first = 1;
+
+        if (SB_ALLOC_OPTS(s) == ((1 << _ALLOC_skip_busy) |
+                (1 << _ALLOC_dirid_groups) | (1 << _ALLOC_packing_groups)))
+                return;
+
+        seq_puts(seq, ",alloc=");
+
+        if (TEST_OPTION(concentrating_formatted_nodes, s)) {
+                print_sep(seq, &first);
+                if (REISERFS_SB(s)->s_alloc_options.border != 10) {
+                        seq_printf(seq, "concentrating_formatted_nodes=%d",
+                                100 / REISERFS_SB(s)->s_alloc_options.border);
+                } else
+                        seq_puts(seq, "concentrating_formatted_nodes");
+        }
+        if (TEST_OPTION(displacing_large_files, s)) {
+                print_sep(seq, &first);
+                if (REISERFS_SB(s)->s_alloc_options.large_file_size != 16) {
+                        seq_printf(seq, "displacing_large_files=%lu",
+                            REISERFS_SB(s)->s_alloc_options.large_file_size);
+                } else
+                        seq_puts(seq, "displacing_large_files");
+        }
+        if (TEST_OPTION(displacing_new_packing_localities, s)) {
+                print_sep(seq, &first);
+                seq_puts(seq, "displacing_new_packing_localities");
+        }
+        if (TEST_OPTION(old_hashed_relocation, s)) {
+                print_sep(seq, &first);
+                seq_puts(seq, "old_hashed_relocation");
+        }
+        if (TEST_OPTION(new_hashed_relocation, s)) {
+                print_sep(seq, &first);
+                seq_puts(seq, "new_hashed_relocation");
+        }
+        if (TEST_OPTION(dirid_groups, s)) {
+                print_sep(seq, &first);
+                seq_puts(seq, "dirid_groups");
+        }
+        if (TEST_OPTION(oid_groups, s)) {
+                print_sep(seq, &first);
+                seq_puts(seq, "oid_groups");
+        }
+        if (TEST_OPTION(packing_groups, s)) {
+                print_sep(seq, &first);
+                seq_puts(seq, "packing_groups");
+        }
+        if (TEST_OPTION(hashed_formatted_nodes, s)) {
+                print_sep(seq, &first);
+                seq_puts(seq, "hashed_formatted_nodes");
+        }
+        if (TEST_OPTION(skip_busy, s)) {
+                print_sep(seq, &first);
+                seq_puts(seq, "skip_busy");
+        }
+        if (TEST_OPTION(hundredth_slices, s)) {
+                print_sep(seq, &first);
+                seq_puts(seq, "hundredth_slices");
+        }
+        if (TEST_OPTION(old_way, s)) {
+                print_sep(seq, &first);
+                seq_puts(seq, "old_way");
+        }
+        if (TEST_OPTION(displace_based_on_dirid, s)) {
+                print_sep(seq, &first);
+                seq_puts(seq, "displace_based_on_dirid");
+        }
+        if (REISERFS_SB(s)->s_alloc_options.preallocmin != 0) {
+                print_sep(seq, &first);
+                seq_printf(seq, "preallocmin=%d",
+                                REISERFS_SB(s)->s_alloc_options.preallocmin);
+        }
+        if (REISERFS_SB(s)->s_alloc_options.preallocsize != 17) {
+                print_sep(seq, &first);
+                seq_printf(seq, "preallocsize=%d",
+                                REISERFS_SB(s)->s_alloc_options.preallocsize);
+        }
+}
+
 static inline void new_hashed_relocation(reiserfs_blocknr_hint_t * hint)
 {
         char *hash_in;
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 1abffa451529..19c454e61b79 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -28,6 +28,7 @@
 #include <linux/mount.h>
 #include <linux/namei.h>
 #include <linux/crc32.h>
+#include <linux/seq_file.h>
 
 struct file_system_type reiserfs_fs_type;
 
@@ -61,6 +62,7 @@ static int is_any_reiserfs_magic_string(struct reiserfs_super_block *rs)
 
 static int reiserfs_remount(struct super_block *s, int *flags, char *data);
 static int reiserfs_statfs(struct dentry *dentry, struct kstatfs *buf);
+void show_alloc_options(struct seq_file *seq, struct super_block *s);
 
 static int reiserfs_sync_fs(struct super_block *s, int wait)
 {
@@ -596,6 +598,82 @@ out:
         reiserfs_write_unlock_once(inode->i_sb, lock_depth);
 }
 
+static int reiserfs_show_options(struct seq_file *seq, struct dentry *root)
+{
+        struct super_block *s = root->d_sb;
+        struct reiserfs_journal *journal = SB_JOURNAL(s);
+        long opts = REISERFS_SB(s)->s_mount_opt;
+
+        if (opts & (1 << REISERFS_LARGETAIL))
+                seq_puts(seq, ",tails=on");
+        else if (!(opts & (1 << REISERFS_SMALLTAIL)))
+                seq_puts(seq, ",notail");
+        /* tails=small is default so we don't show it */
+
+        if (!(opts & (1 << REISERFS_BARRIER_FLUSH)))
+                seq_puts(seq, ",barrier=none");
+        /* barrier=flush is default so we don't show it */
+
+        if (opts & (1 << REISERFS_ERROR_CONTINUE))
+                seq_puts(seq, ",errors=continue");
+        else if (opts & (1 << REISERFS_ERROR_PANIC))
+                seq_puts(seq, ",errors=panic");
+        /* errors=ro is default so we don't show it */
+
+        if (opts & (1 << REISERFS_DATA_LOG))
+                seq_puts(seq, ",data=journal");
+        else if (opts & (1 << REISERFS_DATA_WRITEBACK))
+                seq_puts(seq, ",data=writeback");
+        /* data=ordered is default so we don't show it */
+
+        if (opts & (1 << REISERFS_ATTRS))
+                seq_puts(seq, ",attrs");
+
+        if (opts & (1 << REISERFS_XATTRS_USER))
+                seq_puts(seq, ",user_xattr");
+
+        if (opts & (1 << REISERFS_EXPOSE_PRIVROOT))
+                seq_puts(seq, ",expose_privroot");
+
+        if (opts & (1 << REISERFS_POSIXACL))
+                seq_puts(seq, ",acl");
+
+        if (REISERFS_SB(s)->s_jdev)
+                seq_printf(seq, ",jdev=%s", REISERFS_SB(s)->s_jdev);
+
+        if (journal->j_max_commit_age != journal->j_default_max_commit_age)
+                seq_printf(seq, ",commit=%d", journal->j_max_commit_age);
+
+#ifdef CONFIG_QUOTA
+        if (REISERFS_SB(s)->s_qf_names[USRQUOTA])
+                seq_printf(seq, ",usrjquota=%s", REISERFS_SB(s)->s_qf_names[USRQUOTA]);
+        else if (opts & (1 << REISERFS_USRQUOTA))
+                seq_puts(seq, ",usrquota");
+        if (REISERFS_SB(s)->s_qf_names[GRPQUOTA])
+                seq_printf(seq, ",grpjquota=%s", REISERFS_SB(s)->s_qf_names[GRPQUOTA]);
+        else if (opts & (1 << REISERFS_GRPQUOTA))
+                seq_puts(seq, ",grpquota");
+        if (REISERFS_SB(s)->s_jquota_fmt) {
+                if (REISERFS_SB(s)->s_jquota_fmt == QFMT_VFS_OLD)
+                        seq_puts(seq, ",jqfmt=vfsold");
+                else if (REISERFS_SB(s)->s_jquota_fmt == QFMT_VFS_V0)
+                        seq_puts(seq, ",jqfmt=vfsv0");
+        }
+#endif
+
+        /* Block allocator options */
+        if (opts & (1 << REISERFS_NO_BORDER))
+                seq_puts(seq, ",block-allocator=noborder");
+        if (opts & (1 << REISERFS_NO_UNHASHED_RELOCATION))
+                seq_puts(seq, ",block-allocator=no_unhashed_relocation");
+        if (opts & (1 << REISERFS_HASHED_RELOCATION))
+                seq_puts(seq, ",block-allocator=hashed_relocation");
+        if (opts & (1 << REISERFS_TEST4))
+                seq_puts(seq, ",block-allocator=test4");
+        show_alloc_options(seq, s);
+        return 0;
+}
+
 #ifdef CONFIG_QUOTA
 static ssize_t reiserfs_quota_write(struct super_block *, int, const char *,
                                     size_t, loff_t);
@@ -616,7 +694,7 @@ static const struct super_operations reiserfs_sops = {
         .unfreeze_fs = reiserfs_unfreeze,
         .statfs = reiserfs_statfs,
         .remount_fs = reiserfs_remount,
-        .show_options = generic_show_options,
+        .show_options = reiserfs_show_options,
 #ifdef CONFIG_QUOTA
         .quota_read = reiserfs_quota_read,
         .quota_write = reiserfs_quota_write,
@@ -914,9 +992,9 @@ static int reiserfs_parse_options(struct super_block *s, char *options,	/* strin
                 {"jdev",.arg_required = 'j',.values = NULL},
                 {"nolargeio",.arg_required = 'w',.values = NULL},
                 {"commit",.arg_required = 'c',.values = NULL},
-                {"usrquota",.setmask = 1 << REISERFS_QUOTA},
-                {"grpquota",.setmask = 1 << REISERFS_QUOTA},
-                {"noquota",.clrmask = 1 << REISERFS_QUOTA},
+                {"usrquota",.setmask = 1 << REISERFS_USRQUOTA},
+                {"grpquota",.setmask = 1 << REISERFS_GRPQUOTA},
+                {"noquota",.clrmask = 1 << REISERFS_USRQUOTA | 1 << REISERFS_GRPQUOTA},
                 {"errors",.arg_required = 'e',.values = error_actions},
                 {"usrjquota",.arg_required =
                  'u' | (1 << REISERFS_OPT_ALLOWEMPTY),.values = NULL},
@@ -1030,12 +1108,19 @@ static int reiserfs_parse_options(struct super_block *s, char *options,	/* strin
                                         return 0;
                                 }
                                 strcpy(qf_names[qtype], arg);
-                                *mount_options |= 1 << REISERFS_QUOTA;
+                                if (qtype == USRQUOTA)
+                                        *mount_options |= 1 << REISERFS_USRQUOTA;
+                                else
+                                        *mount_options |= 1 << REISERFS_GRPQUOTA;
                         } else {
                                 if (qf_names[qtype] !=
                                     REISERFS_SB(s)->s_qf_names[qtype])
                                         kfree(qf_names[qtype]);
                                 qf_names[qtype] = NULL;
+                                if (qtype == USRQUOTA)
+                                        *mount_options &= ~(1 << REISERFS_USRQUOTA);
+                                else
+                                        *mount_options &= ~(1 << REISERFS_GRPQUOTA);
                         }
                 }
                 if (c == 'f') {
@@ -1074,9 +1159,10 @@ static int reiserfs_parse_options(struct super_block *s, char *options,	/* strin
                                  "journaled quota format not specified.");
                 return 0;
         }
-        /* This checking is not precise wrt the quota type but for our purposes it is sufficient */
-        if (!(*mount_options & (1 << REISERFS_QUOTA))
-            && sb_any_quota_loaded(s)) {
+        if ((!(*mount_options & (1 << REISERFS_USRQUOTA)) &&
+               sb_has_quota_loaded(s, USRQUOTA)) ||
+            (!(*mount_options & (1 << REISERFS_GRPQUOTA)) &&
+               sb_has_quota_loaded(s, GRPQUOTA))) {
                 reiserfs_warning(s, "super-6516", "quota options must "
                                  "be present when quota is turned on.");
                 return 0;
@@ -1224,7 +1310,8 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
         safe_mask |= 1 << REISERFS_ERROR_RO;
         safe_mask |= 1 << REISERFS_ERROR_CONTINUE;
         safe_mask |= 1 << REISERFS_ERROR_PANIC;
-        safe_mask |= 1 << REISERFS_QUOTA;
+        safe_mask |= 1 << REISERFS_USRQUOTA;
+        safe_mask |= 1 << REISERFS_GRPQUOTA;
 
         /* Update the bitmask, taking care to keep
          * the bits we're not allowed to change here */
@@ -1671,6 +1758,14 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
              &commit_max_age, qf_names, &qfmt) == 0) {
                 goto error;
         }
+        if (jdev_name && jdev_name[0]) {
+                REISERFS_SB(s)->s_jdev = kstrdup(jdev_name, GFP_KERNEL);
+                if (!REISERFS_SB(s)->s_jdev) {
+                        SWARN(silent, s, "", "Cannot allocate memory for "
+                                "journal device name");
+                        goto error;
+                }
+        }
 #ifdef CONFIG_QUOTA
         handle_quota_files(s, qf_names, &qfmt);
 #endif
@@ -2053,8 +2148,9 @@ static int reiserfs_quota_on(struct super_block *sb, int type, int format_id,
         int err;
         struct inode *inode;
         struct reiserfs_transaction_handle th;
+        int opt = type == USRQUOTA ? REISERFS_USRQUOTA : REISERFS_GRPQUOTA;
 
-        if (!(REISERFS_SB(sb)->s_mount_opt & (1 << REISERFS_QUOTA)))
+        if (!(REISERFS_SB(sb)->s_mount_opt & (1 << opt)))
                 return -EINVAL;
 
         /* Quotafile not on the same filesystem? */
diff --git a/include/linux/reiserfs_fs.h b/include/linux/reiserfs_fs.h
index 26be28fd7b76..2213ddcce20c 100644
--- a/include/linux/reiserfs_fs.h
+++ b/include/linux/reiserfs_fs.h
@@ -1759,13 +1759,14 @@ struct reiserfs_journal_header {
                                               REISERFS_QUOTA_TRANS_BLOCKS(sb)))
 
 #ifdef CONFIG_QUOTA
+#define REISERFS_QUOTA_OPTS ((1 << REISERFS_USRQUOTA) | (1 << REISERFS_GRPQUOTA))
 /* We need to update data and inode (atime) */
-#define REISERFS_QUOTA_TRANS_BLOCKS(s) (REISERFS_SB(s)->s_mount_opt & (1<<REISERFS_QUOTA) ? 2 : 0)
+#define REISERFS_QUOTA_TRANS_BLOCKS(s) (REISERFS_SB(s)->s_mount_opt & REISERFS_QUOTA_OPTS ? 2 : 0)
 /* 1 balancing, 1 bitmap, 1 data per write + stat data update */
-#define REISERFS_QUOTA_INIT_BLOCKS(s) (REISERFS_SB(s)->s_mount_opt & (1<<REISERFS_QUOTA) ? \
+#define REISERFS_QUOTA_INIT_BLOCKS(s) (REISERFS_SB(s)->s_mount_opt & REISERFS_QUOTA_OPTS ? \
 (DQUOT_INIT_ALLOC*(JOURNAL_PER_BALANCE_CNT+2)+DQUOT_INIT_REWRITE+1) : 0)
 /* same as with INIT */
-#define REISERFS_QUOTA_DEL_BLOCKS(s) (REISERFS_SB(s)->s_mount_opt & (1<<REISERFS_QUOTA) ? \
+#define REISERFS_QUOTA_DEL_BLOCKS(s) (REISERFS_SB(s)->s_mount_opt & REISERFS_QUOTA_OPTS ? \
 (DQUOT_DEL_ALLOC*(JOURNAL_PER_BALANCE_CNT+2)+DQUOT_DEL_REWRITE+1) : 0)
 #else
 #define REISERFS_QUOTA_TRANS_BLOCKS(s) 0
diff --git a/include/linux/reiserfs_fs_sb.h b/include/linux/reiserfs_fs_sb.h
index 52c83b6a758a..8c9e85c64b46 100644
--- a/include/linux/reiserfs_fs_sb.h
+++ b/include/linux/reiserfs_fs_sb.h
@@ -417,6 +417,7 @@ struct reiserfs_sb_info {
         char *s_qf_names[MAXQUOTAS];
         int s_jquota_fmt;
 #endif
+        char *s_jdev;           /* Stored jdev for mount option showing */
 #ifdef CONFIG_REISERFS_CHECK
 
         struct tree_balance *cur_tb;    /*
@@ -482,7 +483,8 @@ enum reiserfs_mount_options {
         REISERFS_ERROR_RO,
         REISERFS_ERROR_CONTINUE,
 
-        REISERFS_QUOTA,         /* Some quota option specified */
+        REISERFS_USRQUOTA,      /* User quota option specified */
+        REISERFS_GRPQUOTA,      /* Group quota option specified */
 
         REISERFS_TEST1,
         REISERFS_TEST2,