#include <linux/blkdev.h>
#include <linux/buffer_head.h>
#include <linux/vfs.h>
+#include <linux/namespace.h>
+#include <linux/mount.h>
+#include <linux/namei.h>
+#include <linux/quotaops.h>
struct file_system_type reiserfs_fs_type;
-const char reiserfs_3_5_magic_string[] = REISERFS_SUPER_MAGIC_STRING;
-const char reiserfs_3_6_magic_string[] = REISER2FS_SUPER_MAGIC_STRING;
-const char reiserfs_jr_magic_string[] = REISER2FS_JR_SUPER_MAGIC_STRING;
+static const char reiserfs_3_5_magic_string[] = REISERFS_SUPER_MAGIC_STRING;
+static const char reiserfs_3_6_magic_string[] = REISER2FS_SUPER_MAGIC_STRING;
+static const char reiserfs_jr_magic_string[] = REISER2FS_JR_SUPER_MAGIC_STRING;
int is_reiserfs_3_5 (struct reiserfs_super_block * rs)
{
static int reiserfs_remount (struct super_block * s, int * flags, char * data);
static int reiserfs_statfs (struct super_block * s, struct kstatfs * buf);
-static void reiserfs_sync_fs (struct super_block * s)
+static int reiserfs_sync_fs (struct super_block * s, int wait)
{
if (!(s->s_flags & MS_RDONLY)) {
struct reiserfs_transaction_handle th;
reiserfs_write_lock(s);
- journal_begin(&th, s, 1);
- journal_end_sync(&th, s, 1);
- reiserfs_flush_old_commits(s);
- s->s_dirt = 0;
+ if (!journal_begin(&th, s, 1))
+ if (!journal_end_sync(&th, s, 1))
+ reiserfs_flush_old_commits(s);
+ s->s_dirt = 0; /* Even if it's not true.
+ * We'll loop forever in sync_supers otherwise */
reiserfs_write_unlock(s);
+ } else {
+ s->s_dirt = 0;
}
+ return 0;
}
static void reiserfs_write_super(struct super_block *s)
{
- reiserfs_sync_fs(s);
+ reiserfs_sync_fs(s, 1);
}
static void reiserfs_write_super_lockfs (struct super_block * s)
struct reiserfs_transaction_handle th ;
reiserfs_write_lock(s);
if (!(s->s_flags & MS_RDONLY)) {
- journal_begin(&th, s, 1) ;
- reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1);
- journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
- reiserfs_block_writes(&th) ;
- journal_end_sync(&th, s, 1) ;
+ int err = journal_begin(&th, s, 1) ;
+ if (err) {
+ reiserfs_block_writes(&th) ;
+ } else {
+ reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1);
+ journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
+ reiserfs_block_writes(&th) ;
+ journal_end_sync(&th, s, 1) ;
+ }
}
s->s_dirt = 0;
reiserfs_write_unlock(s);
}
-void reiserfs_unlockfs(struct super_block *s) {
+static void reiserfs_unlockfs(struct super_block *s) {
reiserfs_allow_writes(s) ;
}
-extern const struct key MAX_KEY;
+extern const struct reiserfs_key MAX_KEY;
/* this is used to delete "save link" when there are no items of a
protecting unlink is bigger that a key lf "save link" which
protects truncate), so there left no items to make truncate
completion on */
-static void remove_save_link_only (struct super_block * s, struct key * key, int oid_free)
+static int remove_save_link_only (struct super_block * s, struct reiserfs_key * key, int oid_free)
{
struct reiserfs_transaction_handle th;
+ int err;
/* we are going to do one balancing */
- journal_begin (&th, s, JOURNAL_PER_BALANCE_CNT);
+ err = journal_begin (&th, s, JOURNAL_PER_BALANCE_CNT);
+ if (err)
+ return err;
reiserfs_delete_solid_item (&th, NULL, key);
if (oid_free)
/* removals are protected by direct items */
reiserfs_release_objectid (&th, le32_to_cpu (key->k_objectid));
- journal_end (&th, s, JOURNAL_PER_BALANCE_CNT);
+ return journal_end (&th, s, JOURNAL_PER_BALANCE_CNT);
}
+#ifdef CONFIG_QUOTA
+static int reiserfs_quota_on_mount(struct super_block *, int);
+#endif
/* look for uncompleted unlinks and truncates and complete them */
-static void finish_unfinished (struct super_block * s)
+static int finish_unfinished (struct super_block * s)
{
INITIALIZE_PATH (path);
struct cpu_key max_cpu_key, obj_key;
- struct key save_link_key;
- int retval;
+ struct reiserfs_key save_link_key;
+ int retval = 0;
struct item_head * ih;
struct buffer_head * bh;
int item_pos;
int done;
struct inode * inode;
int truncate;
+#ifdef CONFIG_QUOTA
+ int i;
+ int ms_active_set;
+#endif
/* compose key to look for "save" links */
max_cpu_key.version = KEY_FORMAT_3_5;
max_cpu_key.on_disk_key = MAX_KEY;
max_cpu_key.key_length = 3;
+
+#ifdef CONFIG_QUOTA
+ /* Needed for iput() to work correctly and not trash data */
+ if (s->s_flags & MS_ACTIVE) {
+ ms_active_set = 0;
+ } else {
+ ms_active_set = 1;
+ s->s_flags |= MS_ACTIVE;
+ }
+ /* Turn on quotas so that they are updated correctly */
+ for (i = 0; i < MAXQUOTAS; i++) {
+ if (REISERFS_SB(s)->s_qf_names[i]) {
+ int ret = reiserfs_quota_on_mount(s, i);
+ if (ret < 0)
+ reiserfs_warning(s, "reiserfs: cannot turn on journalled quota: error %d", ret);
+ }
+ }
+#endif
done = 0;
REISERFS_SB(s)->s_is_unlinked_ok = 1;
- while (1) {
+ while (!retval) {
retval = search_item (s, &max_cpu_key, &path);
if (retval != ITEM_NOT_FOUND) {
reiserfs_warning (s, "vs-2140: finish_unfinished: search_by_key returned %d",
"save" link and release objectid */
reiserfs_warning (s, "vs-2180: finish_unfinished: iget failed for %K",
&obj_key);
- remove_save_link_only (s, &save_link_key, 1);
+ retval = remove_save_link_only (s, &save_link_key, 1);
continue;
}
/* file is not unlinked */
reiserfs_warning (s, "vs-2185: finish_unfinished: file %K is not unlinked",
&obj_key);
- remove_save_link_only (s, &save_link_key, 0);
+ retval = remove_save_link_only (s, &save_link_key, 0);
continue;
}
+ DQUOT_INIT(inode);
if (truncate && S_ISDIR (inode->i_mode) ) {
/* We got a truncate request for a dir which is impossible.
then boot into old kernel, remove the file and create dir with
the same key. */
reiserfs_warning(s, "green-2101: impossible truncate on a directory %k. Please report", INODE_PKEY (inode));
- remove_save_link_only (s, &save_link_key, 0);
+ retval = remove_save_link_only (s, &save_link_key, 0);
truncate = 0;
iput (inode);
continue;
reiserfs_info (s, "Truncating %k to %Ld ..",
INODE_PKEY (inode), inode->i_size);
reiserfs_truncate_file (inode, 0/*don't update modification time*/);
- remove_save_link (inode, truncate);
+ retval = remove_save_link (inode, truncate);
} else {
REISERFS_I(inode) -> i_flags |= i_link_saved_unlink_mask;
/* not completed unlink (rmdir) found */
reiserfs_info (s, "Removing %k..", INODE_PKEY (inode));
/* removal gets completed in iput */
+ retval = 0;
}
iput (inode);
}
REISERFS_SB(s)->s_is_unlinked_ok = 0;
+#ifdef CONFIG_QUOTA
+ /* Turn quotas off */
+ for (i = 0; i < MAXQUOTAS; i++) {
+ if (sb_dqopt(s)->files[i])
+ vfs_quota_off_mount(s, i);
+ }
+ if (ms_active_set)
+ /* Restore the flag back */
+ s->s_flags &= ~MS_ACTIVE;
+#endif
pathrelse (&path);
if (done)
reiserfs_info (s, "There were %d uncompleted unlinks/truncates. "
"Completed\n", done);
+ return retval;
}
/* to protect file being unlinked from getting lost we "safe" link files
struct item_head ih;
__u32 link;
+ BUG_ON (!th->t_trans_id);
+
/* file can only get one "save link" of each kind */
RFALSE( truncate &&
( REISERFS_I(inode) -> i_flags & i_link_saved_truncate_mask ),
/* this opens transaction unlike add_save_link */
-void remove_save_link (struct inode * inode, int truncate)
+int remove_save_link (struct inode * inode, int truncate)
{
struct reiserfs_transaction_handle th;
- struct key key;
-
+ struct reiserfs_key key;
+ int err;
/* we are going to do one balancing only */
- journal_begin (&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
+ err = journal_begin (&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
+ if (err)
+ return err;
/* setup key of "save" link */
key.k_dir_id = cpu_to_le32 (MAX_KEY_OBJECTID);
} else
REISERFS_I(inode) -> i_flags &= ~i_link_saved_truncate_mask;
- journal_end (&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
+ return journal_end (&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
}
{
int i;
struct reiserfs_transaction_handle th ;
+ th.t_trans_id = 0;
if (REISERFS_SB(s)->xattr_root) {
d_invalidate (REISERFS_SB(s)->xattr_root);
/* change file system state to current state if it was mounted with read-write permissions */
if (!(s->s_flags & MS_RDONLY)) {
- journal_begin(&th, s, 10) ;
- reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
- set_sb_umount_state( SB_DISK_SUPER_BLOCK(s), REISERFS_SB(s)->s_mount_state );
- journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
+ if (!journal_begin(&th, s, 10)) {
+ reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
+ set_sb_umount_state( SB_DISK_SUPER_BLOCK(s), REISERFS_SB(s)->s_mount_state );
+ journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
+ }
}
/* note, journal_release checks for readonly mount, and can decide not
static void reiserfs_dirty_inode (struct inode * inode) {
struct reiserfs_transaction_handle th ;
+ int err = 0;
if (inode->i_sb->s_flags & MS_RDONLY) {
reiserfs_warning(inode->i_sb, "clm-6006: writing inode %lu on readonly FS",
inode->i_ino) ;
/* this is really only used for atime updates, so they don't have
** to be included in O_SYNC or fsync
*/
- journal_begin(&th, inode->i_sb, 1) ;
+ err = journal_begin(&th, inode->i_sb, 1) ;
+ if (err) {
+ reiserfs_write_unlock (inode->i_sb);
+ return;
+ }
reiserfs_update_sd (&th, inode);
journal_end(&th, inode->i_sb, 1) ;
reiserfs_write_unlock(inode->i_sb);
REISERFS_I(inode)->i_acl_default = NULL;
}
-struct super_operations reiserfs_sops =
+#ifdef CONFIG_QUOTA
+static ssize_t reiserfs_quota_write(struct super_block *, int, const char *, size_t, loff_t);
+static ssize_t reiserfs_quota_read(struct super_block *, int, char *, size_t, loff_t);
+#endif
+
+static struct super_operations reiserfs_sops =
{
.alloc_inode = reiserfs_alloc_inode,
.destroy_inode = reiserfs_destroy_inode,
.clear_inode = reiserfs_clear_inode,
.put_super = reiserfs_put_super,
.write_super = reiserfs_write_super,
+ .sync_fs = reiserfs_sync_fs,
.write_super_lockfs = reiserfs_write_super_lockfs,
.unlockfs = reiserfs_unlockfs,
.statfs = reiserfs_statfs,
.remount_fs = reiserfs_remount,
+#ifdef CONFIG_QUOTA
+ .quota_read = reiserfs_quota_read,
+ .quota_write = reiserfs_quota_write,
+#endif
+};
+
+#ifdef CONFIG_QUOTA
+#define QTYPE2NAME(t) ((t)==USRQUOTA?"user":"group")
+
+static int reiserfs_dquot_initialize(struct inode *, int);
+static int reiserfs_dquot_drop(struct inode *);
+static int reiserfs_write_dquot(struct dquot *);
+static int reiserfs_acquire_dquot(struct dquot *);
+static int reiserfs_release_dquot(struct dquot *);
+static int reiserfs_mark_dquot_dirty(struct dquot *);
+static int reiserfs_write_info(struct super_block *, int);
+static int reiserfs_quota_on(struct super_block *, int, int, char *);
+static struct dquot_operations reiserfs_quota_operations =
+{
+ .initialize = reiserfs_dquot_initialize,
+ .drop = reiserfs_dquot_drop,
+ .alloc_space = dquot_alloc_space,
+ .alloc_inode = dquot_alloc_inode,
+ .free_space = dquot_free_space,
+ .free_inode = dquot_free_inode,
+ .transfer = dquot_transfer,
+ .write_dquot = reiserfs_write_dquot,
+ .acquire_dquot = reiserfs_acquire_dquot,
+ .release_dquot = reiserfs_release_dquot,
+ .mark_dirty = reiserfs_mark_dquot_dirty,
+ .write_info = reiserfs_write_info,
};
+static struct quotactl_ops reiserfs_qctl_operations =
+{
+ .quota_on = reiserfs_quota_on,
+ .quota_off = vfs_quota_off,
+ .quota_sync = vfs_quota_sync,
+ .get_info = vfs_get_dqinfo,
+ .set_info = vfs_set_dqinfo,
+ .get_dqblk = vfs_get_dqblk,
+ .set_dqblk = vfs_set_dqblk,
+};
+#endif
+
static struct export_operations reiserfs_export_ops = {
.encode_fh = reiserfs_encode_fh,
.decode_fh = reiserfs_decode_fh,
applied BEFORE setmask */
} arg_desc_t;
+/* Set this bit in arg_required to allow empty arguments */
+#define REISERFS_OPT_ALLOWEMPTY 31
/* this struct is used in reiserfs_getopt() for describing the set of reiserfs
mount options */
{NULL, 0, 0}
};
+static const arg_desc_t error_actions[] = {
+ {"panic", 1 << REISERFS_ERROR_PANIC,
+ (1 << REISERFS_ERROR_RO | 1 << REISERFS_ERROR_CONTINUE)},
+ {"ro-remount", 1 << REISERFS_ERROR_RO,
+ (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_CONTINUE)},
+#ifdef REISERFS_JOURNAL_ERROR_ALLOWS_NO_LOG
+ {"continue", 1 << REISERFS_ERROR_CONTINUE,
+ (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_RO)},
+#endif
+ {NULL, 0, 0},
+};
+
int reiserfs_default_io_size = 128 * 1024; /* Default recommended I/O size is 128k.
There might be broken applications that are
confused by this. Use nolargeio mount option
for (opt = opts; opt->option_name; opt ++) {
if (!strncmp (p, opt->option_name, strlen (opt->option_name))) {
if (bit_flags) {
- *bit_flags &= ~opt->clrmask;
- *bit_flags |= opt->setmask;
+ if (opt->clrmask == (1 << REISERFS_UNSUPPORTED_OPT))
+ reiserfs_warning (s, "%s not supported.", p);
+ else
+ *bit_flags &= ~opt->clrmask;
+ if (opt->setmask == (1 << REISERFS_UNSUPPORTED_OPT))
+ reiserfs_warning (s, "%s not supported.", p);
+ else
+ *bit_flags |= opt->setmask;
}
break;
}
/* move to the argument, or to next option if argument is not required */
p ++;
- if ( opt->arg_required && !strlen (p) ) {
- /* this catches "option=," */
+ if ( opt->arg_required && !(opt->arg_required & (1<<REISERFS_OPT_ALLOWEMPTY)) && !strlen (p) ) {
+ /* this catches "option=," if not allowed */
reiserfs_warning (s, "empty argument for \"%s\"", opt->option_name);
return -1;
}
if (!opt->values) {
/* *=NULLopt_arg contains pointer to argument */
*opt_arg = p;
- return opt->arg_required;
+ return opt->arg_required & ~(1<<REISERFS_OPT_ALLOWEMPTY);
}
/* values possible for this option are listed in opt->values */
{"conv", .setmask = 1<<REISERFS_CONVERT},
{"attrs", .setmask = 1<<REISERFS_ATTRS},
{"noattrs", .clrmask = 1<<REISERFS_ATTRS},
+#ifdef CONFIG_REISERFS_FS_XATTR
{"user_xattr", .setmask = 1<<REISERFS_XATTRS_USER},
{"nouser_xattr",.clrmask = 1<<REISERFS_XATTRS_USER},
+#else
+ {"user_xattr", .setmask = 1<<REISERFS_UNSUPPORTED_OPT},
+ {"nouser_xattr",.clrmask = 1<<REISERFS_UNSUPPORTED_OPT},
+#endif
{"tagxid", .setmask = 1<<REISERFS_TAGXID},
#ifdef CONFIG_REISERFS_FS_POSIX_ACL
{"acl", .setmask = 1<<REISERFS_POSIXACL},
{"noacl", .clrmask = 1<<REISERFS_POSIXACL},
+#else
+ {"acl", .setmask = 1<<REISERFS_UNSUPPORTED_OPT},
+ {"noacl", .clrmask = 1<<REISERFS_UNSUPPORTED_OPT},
#endif
{"nolog",}, /* This is unsupported */
{"replayonly", .setmask = 1<<REPLAYONLY},
{"commit", .arg_required = 'c', .values = NULL},
{"usrquota",},
{"grpquota",},
+ {"errors", .arg_required = 'e', .values = error_actions},
+ {"usrjquota", .arg_required = 'u'|(1<<REISERFS_OPT_ALLOWEMPTY), .values = NULL},
+ {"grpjquota", .arg_required = 'g'|(1<<REISERFS_OPT_ALLOWEMPTY), .values = NULL},
+ {"jqfmt", .arg_required = 'f', .values = NULL},
{NULL,}
};
*jdev_name = arg;
}
}
+
+#ifdef CONFIG_QUOTA
+ if (c == 'u' || c == 'g') {
+ int qtype = c == 'u' ? USRQUOTA : GRPQUOTA;
+
+ if (sb_any_quota_enabled(s)) {
+ reiserfs_warning(s, "reiserfs_parse_options: cannot change journalled quota options when quota turned on.");
+ return 0;
+ }
+ if (*arg) { /* Some filename specified? */
+ if (REISERFS_SB(s)->s_qf_names[qtype] && strcmp(REISERFS_SB(s)->s_qf_names[qtype], arg)) {
+ reiserfs_warning(s, "reiserfs_parse_options: %s quota file already specified.", QTYPE2NAME(qtype));
+ return 0;
+ }
+ if (strchr(arg, '/')) {
+ reiserfs_warning(s, "reiserfs_parse_options: quotafile must be on filesystem root.");
+ return 0;
+ }
+ REISERFS_SB(s)->s_qf_names[qtype] = kmalloc(strlen(arg)+1, GFP_KERNEL);
+ if (!REISERFS_SB(s)->s_qf_names[qtype]) {
+ reiserfs_warning(s, "reiserfs_parse_options: not enough memory for storing quotafile name.");
+ return 0;
+ }
+ strcpy(REISERFS_SB(s)->s_qf_names[qtype], arg);
+ }
+ else {
+ if (REISERFS_SB(s)->s_qf_names[qtype]) {
+ kfree(REISERFS_SB(s)->s_qf_names[qtype]);
+ REISERFS_SB(s)->s_qf_names[qtype] = NULL;
+ }
+ }
+ }
+ if (c == 'f') {
+ if (!strcmp(arg, "vfsold"))
+ REISERFS_SB(s)->s_jquota_fmt = QFMT_VFS_OLD;
+ else if (!strcmp(arg, "vfsv0"))
+ REISERFS_SB(s)->s_jquota_fmt = QFMT_VFS_V0;
+ else {
+ reiserfs_warning(s, "reiserfs_parse_options: unknown quota format specified.");
+ return 0;
+ }
+ }
+#else
+ if (c == 'u' || c == 'g' || c == 'f') {
+ reiserfs_warning(s, "reiserfs_parse_options: journalled quota options not supported.");
+ return 0;
+ }
+#endif
}
+#ifdef CONFIG_QUOTA
+ if (!REISERFS_SB(s)->s_jquota_fmt && (REISERFS_SB(s)->s_qf_names[USRQUOTA] || REISERFS_SB(s)->s_qf_names[GRPQUOTA])) {
+ reiserfs_warning(s, "reiserfs_parse_options: journalled quota format not specified.");
+ return 0;
+ }
+#endif
return 1;
}
unsigned long mount_options = REISERFS_SB(s)->s_mount_opt;
unsigned long safe_mask = 0;
unsigned int commit_max_age = (unsigned int)-1;
+ struct reiserfs_journal *journal = SB_JOURNAL(s);
+ int err;
+#ifdef CONFIG_QUOTA
+ int i;
+#endif
rs = SB_DISK_SUPER_BLOCK (s);
- if (!reiserfs_parse_options(s, arg, &mount_options, &blocks, NULL, &commit_max_age))
+ if (!reiserfs_parse_options(s, arg, &mount_options, &blocks, NULL, &commit_max_age)) {
+#ifdef CONFIG_QUOTA
+ for (i = 0; i < MAXQUOTAS; i++)
+ if (REISERFS_SB(s)->s_qf_names[i]) {
+ kfree(REISERFS_SB(s)->s_qf_names[i]);
+ REISERFS_SB(s)->s_qf_names[i] = NULL;
+ }
+#endif
return -EINVAL;
+ }
handle_attrs(s);
safe_mask |= 1 << REISERFS_POSIXACL;
safe_mask |= 1 << REISERFS_BARRIER_FLUSH;
safe_mask |= 1 << REISERFS_BARRIER_NONE;
+ safe_mask |= 1 << REISERFS_ERROR_RO;
+ safe_mask |= 1 << REISERFS_ERROR_CONTINUE;
+ safe_mask |= 1 << REISERFS_ERROR_PANIC;
/* Update the bitmask, taking care to keep
* the bits we're not allowed to change here */
REISERFS_SB(s)->s_mount_opt = (REISERFS_SB(s)->s_mount_opt & ~safe_mask) | (mount_options & safe_mask);
if(commit_max_age != 0 && commit_max_age != (unsigned int)-1) {
- SB_JOURNAL_MAX_COMMIT_AGE(s) = commit_max_age;
- SB_JOURNAL_MAX_TRANS_AGE(s) = commit_max_age;
+ journal->j_max_commit_age = commit_max_age;
+ journal->j_max_trans_age = commit_max_age;
}
else if(commit_max_age == 0)
{
/* 0 means restore defaults. */
- SB_JOURNAL_MAX_COMMIT_AGE(s) = SB_JOURNAL_DEFAULT_MAX_COMMIT_AGE(s);
- SB_JOURNAL_MAX_TRANS_AGE(s) = JOURNAL_MAX_TRANS_AGE;
+ journal->j_max_commit_age = journal->j_default_max_commit_age;
+ journal->j_max_trans_age = JOURNAL_MAX_TRANS_AGE;
}
if(blocks) {
return 0;
}
- journal_begin(&th, s, 10) ;
+ err = journal_begin(&th, s, 10) ;
+ if (err)
+ return err;
+
/* Mounting a rw partition read-only. */
reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
set_sb_umount_state( rs, REISERFS_SB(s)->s_mount_state );
return 0; /* We are read-write already */
}
+ if (reiserfs_is_journal_aborted (journal))
+ return journal->j_errno;
+
handle_data_mode(s, mount_options);
handle_barrier_mode(s, mount_options);
REISERFS_SB(s)->s_mount_state = sb_umount_state(rs) ;
s->s_flags &= ~MS_RDONLY ; /* now it is safe to call journal_begin */
- journal_begin(&th, s, 10) ;
+ err = journal_begin(&th, s, 10) ;
+ if (err)
+ return err;
/* Mount a partition which is read-only, read-write */
reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
}
/* this will force a full flush of all journal lists */
SB_JOURNAL(s)->j_must_wait = 1 ;
- journal_end(&th, s, 10) ;
+ err = journal_end(&th, s, 10) ;
+ if (err)
+ return err;
s->s_dirt = 0;
if (!( *mount_flags & MS_RDONLY ) ) {
return 0;
}
-void check_bitmap (struct super_block * s)
-{
- int i = 0;
- int free = 0;
- char * buf;
-
- while (i < SB_BLOCK_COUNT (s)) {
- buf = SB_AP_BITMAP (s)[i / (s->s_blocksize * 8)].bh->b_data;
- if (!reiserfs_test_le_bit (i % (s->s_blocksize * 8), buf))
- free ++;
- i ++;
- }
-
- if (free != SB_FREE_BLOCKS (s))
- reiserfs_warning (s,"vs-4000: check_bitmap: %d free blocks, must be %d",
- free, SB_FREE_BLOCKS (s));
-}
-
static int read_super_block (struct super_block * s, int offset)
{
struct buffer_head * bh;
s->s_op = &reiserfs_sops;
s->s_export_op = &reiserfs_export_ops;
+#ifdef CONFIG_QUOTA
+ s->s_qcop = &reiserfs_qctl_operations;
+ s->dq_op = &reiserfs_quota_operations;
+#endif
/* new format is limited by the 32 bit wide i_blocks field, want to
** be one full block below that.
// FIXME: we look for only one name in a directory. If tea and yura
// bith have the same value - we ask user to send report to the
// mailing list
-__u32 find_hash_out (struct super_block * s)
+static __u32 find_hash_out (struct super_block * s)
{
int retval;
struct inode * inode;
}
// this is used to set up correct value for old partitions
-int function2code (hashf_t func)
+static int function2code (hashf_t func)
{
if (func == keyed_hash)
return TEA_HASH;
}
s->s_fs_info = sbi;
memset (sbi, 0, sizeof (struct reiserfs_sb_info));
- /* Set default values for options: non-aggressive tails */
- REISERFS_SB(s)->s_mount_opt = ( 1 << REISERFS_SMALLTAIL );
+ /* Set default values for options: non-aggressive tails, RO on errors */
+ REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_SMALLTAIL);
+ REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_ERROR_RO);
/* no preallocation minimum, be smart in
reiserfs_file_write instead */
REISERFS_SB(s)->s_alloc_options.preallocmin = 0;
if (!(s->s_flags & MS_RDONLY)) {
- journal_begin(&th, s, 1) ;
+ errval = journal_begin(&th, s, 1) ;
+ if (errval) {
+ dput (s->s_root);
+ s->s_root = NULL;
+ goto error;
+ }
reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
set_sb_umount_state( rs, REISERFS_ERROR_FS );
}
journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
- journal_end(&th, s, 1) ;
+ errval = journal_end(&th, s, 1) ;
+ if (errval) {
+ dput (s->s_root);
+ s->s_root = NULL;
+ goto error;
+ }
- if (reiserfs_xattr_init (s, s->s_flags)) {
+ if ((errval = reiserfs_xattr_init (s, s->s_flags))) {
dput (s->s_root);
s->s_root = NULL;
goto error;
reiserfs_info (s, "using 3.5.x disk format\n") ;
}
- if (reiserfs_xattr_init (s, s->s_flags)) {
+ if ((errval = reiserfs_xattr_init (s, s->s_flags))) {
dput (s->s_root);
s->s_root = NULL;
goto error;
reiserfs_proc_info_init( s );
init_waitqueue_head (&(sbi->s_wait));
- sbi->bitmap_lock = SPIN_LOCK_UNLOCKED;
+ spin_lock_init(&sbi->bitmap_lock);
return (0);
}
if (SB_BUFFER_WITH_SB (s))
brelse(SB_BUFFER_WITH_SB (s));
-
+#ifdef CONFIG_QUOTA
+ for (j = 0; j < MAXQUOTAS; j++) {
+ if (sbi->s_qf_names[j])
+ kfree(sbi->s_qf_names[j]);
+ }
+#endif
if (sbi != NULL) {
kfree(sbi);
}
return 0;
}
+#ifdef CONFIG_QUOTA
+static int reiserfs_dquot_initialize(struct inode *inode, int type)
+{
+ struct reiserfs_transaction_handle th;
+ int ret;
+
+ /* We may create quota structure so we need to reserve enough blocks */
+ reiserfs_write_lock(inode->i_sb);
+ journal_begin(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
+ ret = dquot_initialize(inode, type);
+ journal_end(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
+ reiserfs_write_unlock(inode->i_sb);
+ return ret;
+}
+
+static int reiserfs_dquot_drop(struct inode *inode)
+{
+ struct reiserfs_transaction_handle th;
+ int ret;
+
+ /* We may delete quota structure so we need to reserve enough blocks */
+ reiserfs_write_lock(inode->i_sb);
+ journal_begin(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
+ ret = dquot_drop(inode);
+ journal_end(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
+ reiserfs_write_unlock(inode->i_sb);
+ return ret;
+}
+
+static int reiserfs_write_dquot(struct dquot *dquot)
+{
+ struct reiserfs_transaction_handle th;
+ int ret;
+
+ reiserfs_write_lock(dquot->dq_sb);
+ journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_TRANS_BLOCKS);
+ ret = dquot_commit(dquot);
+ journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_TRANS_BLOCKS);
+ reiserfs_write_unlock(dquot->dq_sb);
+ return ret;
+}
+
+static int reiserfs_acquire_dquot(struct dquot *dquot)
+{
+ struct reiserfs_transaction_handle th;
+ int ret;
+
+ reiserfs_write_lock(dquot->dq_sb);
+ journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
+ ret = dquot_acquire(dquot);
+ journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
+ reiserfs_write_unlock(dquot->dq_sb);
+ return ret;
+}
+
+static int reiserfs_release_dquot(struct dquot *dquot)
+{
+ struct reiserfs_transaction_handle th;
+ int ret;
+
+ reiserfs_write_lock(dquot->dq_sb);
+ journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
+ ret = dquot_release(dquot);
+ journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
+ reiserfs_write_unlock(dquot->dq_sb);
+ return ret;
+}
+
+static int reiserfs_mark_dquot_dirty(struct dquot *dquot)
+{
+ /* Are we journalling quotas? */
+ if (REISERFS_SB(dquot->dq_sb)->s_qf_names[USRQUOTA] ||
+ REISERFS_SB(dquot->dq_sb)->s_qf_names[GRPQUOTA]) {
+ dquot_mark_dquot_dirty(dquot);
+ return reiserfs_write_dquot(dquot);
+ }
+ else
+ return dquot_mark_dquot_dirty(dquot);
+}
+
+static int reiserfs_write_info(struct super_block *sb, int type)
+{
+ struct reiserfs_transaction_handle th;
+ int ret;
+
+ /* Data block + inode block */
+ reiserfs_write_lock(sb);
+ journal_begin(&th, sb, 2);
+ ret = dquot_commit_info(sb, type);
+ journal_end(&th, sb, 2);
+ reiserfs_write_unlock(sb);
+ return ret;
+}
+
+/*
+ * Turn on quotas during mount time - we need to find
+ * the quota file and such...
+ */
+static int reiserfs_quota_on_mount(struct super_block *sb, int type)
+{
+ int err;
+ struct dentry *dentry;
+ struct qstr name = { .name = REISERFS_SB(sb)->s_qf_names[type],
+ .hash = 0,
+ .len = strlen(REISERFS_SB(sb)->s_qf_names[type])};
+
+ dentry = lookup_hash(&name, sb->s_root);
+ if (IS_ERR(dentry))
+ return PTR_ERR(dentry);
+ err = vfs_quota_on_mount(type, REISERFS_SB(sb)->s_jquota_fmt, dentry);
+ /* Now invalidate and put the dentry - quota got its own reference
+ * to inode and dentry has at least wrong hash so we had better
+ * throw it away */
+ d_invalidate(dentry);
+ dput(dentry);
+ return err;
+}
+
+/*
+ * Standard function to be called on quota_on
+ */
+static int reiserfs_quota_on(struct super_block *sb, int type, int format_id, char *path)
+{
+ int err;
+ struct nameidata nd;
+
+ err = path_lookup(path, LOOKUP_FOLLOW, &nd);
+ if (err)
+ return err;
+ /* Quotafile not on the same filesystem? */
+ if (nd.mnt->mnt_sb != sb) {
+ path_release(&nd);
+ return -EXDEV;
+ }
+ /* We must not pack tails for quota files on reiserfs for quota IO to work */
+ if (!REISERFS_I(nd.dentry->d_inode)->i_flags & i_nopack_mask) {
+ reiserfs_warning(sb, "reiserfs: Quota file must have tail packing disabled.");
+ path_release(&nd);
+ return -EINVAL;
+ }
+ /* Not journalling quota? No more tests needed... */
+ if (!REISERFS_SB(sb)->s_qf_names[USRQUOTA] &&
+ !REISERFS_SB(sb)->s_qf_names[GRPQUOTA]) {
+ path_release(&nd);
+ return vfs_quota_on(sb, type, format_id, path);
+ }
+ /* Quotafile not of fs root? */
+ if (nd.dentry->d_parent->d_inode != sb->s_root->d_inode)
+ reiserfs_warning(sb, "reiserfs: Quota file not on filesystem root. "
+ "Journalled quota will not work.");
+ path_release(&nd);
+ return vfs_quota_on(sb, type, format_id, path);
+}
+
+/* Read data from quotafile - avoid pagecache and such because we cannot afford
+ * acquiring the locks... As quota files are never truncated and quota code
+ * itself serializes the operations (and noone else should touch the files)
+ * we don't have to be afraid of races */
+static ssize_t reiserfs_quota_read(struct super_block *sb, int type, char *data,
+ size_t len, loff_t off)
+{
+ struct inode *inode = sb_dqopt(sb)->files[type];
+ unsigned long blk = off >> sb->s_blocksize_bits;
+ int err = 0, offset = off & (sb->s_blocksize - 1), tocopy;
+ size_t toread;
+ struct buffer_head tmp_bh, *bh;
+ loff_t i_size = i_size_read(inode);
+
+ if (off > i_size)
+ return 0;
+ if (off+len > i_size)
+ len = i_size-off;
+ toread = len;
+ while (toread > 0) {
+ tocopy = sb->s_blocksize - offset < toread ? sb->s_blocksize - offset : toread;
+ tmp_bh.b_state = 0;
+ /* Quota files are without tails so we can safely use this function */
+ reiserfs_write_lock(sb);
+ err = reiserfs_get_block(inode, blk, &tmp_bh, 0);
+ reiserfs_write_unlock(sb);
+ if (err)
+ return err;
+ if (!buffer_mapped(&tmp_bh)) /* A hole? */
+ memset(data, 0, tocopy);
+ else {
+ bh = sb_bread(sb, tmp_bh.b_blocknr);
+ if (!bh)
+ return -EIO;
+ memcpy(data, bh->b_data+offset, tocopy);
+ brelse(bh);
+ }
+ offset = 0;
+ toread -= tocopy;
+ data += tocopy;
+ blk++;
+ }
+ return len;
+}
+
+/* Write to quotafile (we know the transaction is already started and has
+ * enough credits) */
+static ssize_t reiserfs_quota_write(struct super_block *sb, int type,
+ const char *data, size_t len, loff_t off)
+{
+ struct inode *inode = sb_dqopt(sb)->files[type];
+ unsigned long blk = off >> sb->s_blocksize_bits;
+ int err = 0, offset = off & (sb->s_blocksize - 1), tocopy;
+ int journal_quota = REISERFS_SB(sb)->s_qf_names[type] != NULL;
+ size_t towrite = len;
+ struct buffer_head tmp_bh, *bh;
+
+ down(&inode->i_sem);
+ while (towrite > 0) {
+ tocopy = sb->s_blocksize - offset < towrite ?
+ sb->s_blocksize - offset : towrite;
+ tmp_bh.b_state = 0;
+ err = reiserfs_get_block(inode, blk, &tmp_bh, GET_BLOCK_CREATE);
+ if (err)
+ goto out;
+ if (offset || tocopy != sb->s_blocksize)
+ bh = sb_bread(sb, tmp_bh.b_blocknr);
+ else
+ bh = sb_getblk(sb, tmp_bh.b_blocknr);
+ if (!bh) {
+ err = -EIO;
+ goto out;
+ }
+ lock_buffer(bh);
+ memcpy(bh->b_data+offset, data, tocopy);
+ flush_dcache_page(bh->b_page);
+ set_buffer_uptodate(bh);
+ unlock_buffer(bh);
+ reiserfs_prepare_for_journal(sb, bh, 1);
+ journal_mark_dirty(current->journal_info, sb, bh);
+ if (!journal_quota)
+ reiserfs_add_ordered_list(inode, bh);
+ brelse(bh);
+ offset = 0;
+ towrite -= tocopy;
+ data += tocopy;
+ blk++;
+ }
+out:
+ if (len == towrite)
+ return err;
+ if (inode->i_size < off+len-towrite)
+ i_size_write(inode, off+len-towrite);
+ inode->i_version++;
+ inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+ mark_inode_dirty(inode);
+ up(&inode->i_sem);
+ return len - towrite;
+}
+
+#endif
+
static struct super_block*
get_super_block (struct file_system_type *fs_type, int flags,
const char *dev_name, void *data)
git://git.onelab.eu / linux-2.6.git / blobdiff