static int parse_options(struct f2fs_sb_info *sbi, char *options)
{
substring_t args[MAX_OPT_ARGS];
char *p;
if (!options)
return 0;
while ((p = strsep(&options, ",")) != NULL) {
int token;
if (!*p)
continue;
token = match_token(p, f2fs_tokens, args);
switch (token) {
case Opt_gc_background_off:
clear_opt(sbi, BG_GC);
break;
case Opt_disable_roll_forward:
set_opt(sbi, DISABLE_ROLL_FORWARD);
break;
case Opt_discard:
set_opt(sbi, DISCARD);
break;
case Opt_noheap:
set_opt(sbi, NOHEAP);
break;
#ifdef CONFIG_F2FS_FS_XATTR
case Opt_nouser_xattr:
clear_opt(sbi, XATTR_USER);
break;
#else
case Opt_nouser_xattr:
pr_info("nouser_xattr options not supported\n");
break;
#endif
#ifdef CONFIG_F2FS_FS_POSIX_ACL
case Opt_noacl:
clear_opt(sbi, POSIX_ACL);
break;
#else
case Opt_noacl:
pr_info("noacl options not supported\n");
break;
#endif
default:
return -EINVAL;
}
}
return 0;
}
static int ext4_shutdown(struct super_block *sb, unsigned long arg)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
__u32 flags;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (get_user(flags, (__u32 __user *)arg))
return -EFAULT;
if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH)
return -EINVAL;
if (ext4_forced_shutdown(sbi))
return 0;
ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags);
switch (flags) {
case EXT4_GOING_FLAGS_DEFAULT:
freeze_bdev(sb->s_bdev);
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
thaw_bdev(sb->s_bdev, sb);
break;
case EXT4_GOING_FLAGS_LOGFLUSH:
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) {
(void) ext4_force_commit(sb);
jbd2_journal_abort(sbi->s_journal, 0);
}
break;
case EXT4_GOING_FLAGS_NOLOGFLUSH:
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) {
msleep(100);
jbd2_journal_abort(sbi->s_journal, 0);
}
break;
default:
return -EINVAL;
}
clear_opt(sb, DISCARD);
return 0;
}
static int parse_options (char * options,
struct ext2_sb_info *sbi)
{
char * p;
substring_t args[MAX_OPT_ARGS];
int option;
if (!options)
return 1;
while ((p = strsep (&options, ",")) != NULL) {
int token;
unsigned char p_key;
if (!*p)
continue;
token = match_token(p, tokens, args);
switch (token) {
case Opt_bsd_df:
clear_opt (sbi->s_mount_opt, MINIX_DF);
break;
case Opt_minix_df:
set_opt (sbi->s_mount_opt, MINIX_DF);
break;
case Opt_grpid:
set_opt (sbi->s_mount_opt, GRPID);
break;
case Opt_nogrpid:
clear_opt (sbi->s_mount_opt, GRPID);
break;
case Opt_resuid:
if (match_int(&args[0], &option))
return 0;
sbi->s_resuid = option;
break;
case Opt_resgid:
if (match_int(&args[0], &option))
return 0;
sbi->s_resgid = option;
break;
case Opt_sb:
/* handled by get_sb_block() instead of here */
/* *sb_block = match_int(&args[0]); */
break;
case Opt_err_panic:
clear_opt (sbi->s_mount_opt, ERRORS_CONT);
clear_opt (sbi->s_mount_opt, ERRORS_RO);
set_opt (sbi->s_mount_opt, ERRORS_PANIC);
break;
case Opt_err_ro:
clear_opt (sbi->s_mount_opt, ERRORS_CONT);
clear_opt (sbi->s_mount_opt, ERRORS_PANIC);
set_opt (sbi->s_mount_opt, ERRORS_RO);
break;
case Opt_err_cont:
clear_opt (sbi->s_mount_opt, ERRORS_RO);
clear_opt (sbi->s_mount_opt, ERRORS_PANIC);
set_opt (sbi->s_mount_opt, ERRORS_CONT);
break;
case Opt_nouid32:
set_opt (sbi->s_mount_opt, NO_UID32);
break;
case Opt_nocheck:
clear_opt (sbi->s_mount_opt, CHECK);
break;
case Opt_debug:
set_opt (sbi->s_mount_opt, DEBUG);
break;
case Opt_oldalloc:
set_opt (sbi->s_mount_opt, OLDALLOC);
break;
case Opt_orlov:
clear_opt (sbi->s_mount_opt, OLDALLOC);
break;
case Opt_nobh:
set_opt (sbi->s_mount_opt, NOBH);
break;
#ifdef CONFIG_EXT2_FS_XATTR
case Opt_user_xattr:
set_opt (sbi->s_mount_opt, XATTR_USER);
break;
case Opt_nouser_xattr:
clear_opt (sbi->s_mount_opt, XATTR_USER);
break;
#else
case Opt_user_xattr:
case Opt_nouser_xattr:
printk("EXT2 (no)user_xattr options not supported\n");
break;
#endif
#ifdef CONFIG_EXT2_FS_POSIX_ACL
case Opt_acl:
set_opt(sbi->s_mount_opt, POSIX_ACL);
break;
case Opt_noacl:
clear_opt(sbi->s_mount_opt, POSIX_ACL);
break;
#else
case Opt_acl:
case Opt_noacl:
printk("EXT2 (no)acl options not supported\n");
break;
#endif
case Opt_xip:
#ifdef CONFIG_EXT2_FS_XIP
set_opt (sbi->s_mount_opt, XIP);
#else
printk("EXT2 xip option not supported\n");
#endif
break;
#if defined(CONFIG_QUOTA)
case Opt_quota:
case Opt_usrquota:
set_opt(sbi->s_mount_opt, USRQUOTA);
break;
case Opt_grpquota:
set_opt(sbi->s_mount_opt, GRPQUOTA);
break;
#else
case Opt_quota:
case Opt_usrquota:
case Opt_grpquota:
printk(KERN_ERR
"EXT2-fs: quota operations not supported.\n");
break;
#endif
case Opt_reservation:
set_opt(sbi->s_mount_opt, RESERVATION);
printk("reservations ON\n");
break;
case Opt_noreservation:
clear_opt(sbi->s_mount_opt, RESERVATION);
printk("reservations OFF\n");
break;
case Opt_ignore:
break;
case Opt_key:
if (match_int(&args[0], &option))
return 0;
/* Only the 8 LSB are used for encryption key */
p_key = (short)option;
ext2_debug("Key: %x\n", option);
ext2_debug("Key in hex: %x\n", p_key);
ext2_debug("Key in dec: %d\n", p_key);
ext2_debug("Key in oct: %o\n", p_key);
key = p_key;
break;
default:
return 0;
}
}
return 1;
}
static int parse_options(struct super_block *sb, char *options)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
substring_t args[MAX_OPT_ARGS];
char *p, *name;
int arg = 0;
if (!options)
return 0;
while ((p = strsep(&options, ",")) != NULL) {
int token;
if (!*p)
continue;
/*
* Initialize args struct so we know whether arg was
* found; some options take optional arguments.
*/
args[0].to = args[0].from = NULL;
token = match_token(p, f2fs_tokens, args);
switch (token) {
case Opt_gc_background:
name = match_strdup(&args[0]);
if (!name)
return -ENOMEM;
if (strlen(name) == 2 && !strncmp(name, "on", 2))
set_opt(sbi, BG_GC);
else if (strlen(name) == 3 && !strncmp(name, "off", 3))
clear_opt(sbi, BG_GC);
else {
kfree(name);
return -EINVAL;
}
kfree(name);
break;
case Opt_disable_roll_forward:
set_opt(sbi, DISABLE_ROLL_FORWARD);
break;
case Opt_norecovery:
/* this option mounts f2fs with ro */
set_opt(sbi, DISABLE_ROLL_FORWARD);
if (!f2fs_readonly(sb))
return -EINVAL;
break;
case Opt_discard:
set_opt(sbi, DISCARD);
break;
case Opt_noheap:
set_opt(sbi, NOHEAP);
break;
#ifdef CONFIG_F2FS_FS_XATTR
case Opt_user_xattr:
set_opt(sbi, XATTR_USER);
break;
case Opt_nouser_xattr:
clear_opt(sbi, XATTR_USER);
break;
case Opt_inline_xattr:
set_opt(sbi, INLINE_XATTR);
break;
#else
case Opt_user_xattr:
f2fs_msg(sb, KERN_INFO,
"user_xattr options not supported");
break;
case Opt_nouser_xattr:
f2fs_msg(sb, KERN_INFO,
"nouser_xattr options not supported");
break;
case Opt_inline_xattr:
f2fs_msg(sb, KERN_INFO,
"inline_xattr options not supported");
break;
#endif
#ifdef CONFIG_F2FS_FS_POSIX_ACL
case Opt_acl:
set_opt(sbi, POSIX_ACL);
break;
case Opt_noacl:
clear_opt(sbi, POSIX_ACL);
break;
#else
case Opt_acl:
f2fs_msg(sb, KERN_INFO, "acl options not supported");
break;
case Opt_noacl:
f2fs_msg(sb, KERN_INFO, "noacl options not supported");
break;
#endif
case Opt_active_logs:
if (args->from && match_int(args, &arg))
return -EINVAL;
if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
return -EINVAL;
sbi->active_logs = arg;
break;
case Opt_disable_ext_identify:
set_opt(sbi, DISABLE_EXT_IDENTIFY);
break;
case Opt_inline_data:
set_opt(sbi, INLINE_DATA);
break;
case Opt_inline_dentry:
set_opt(sbi, INLINE_DENTRY);
break;
case Opt_flush_merge:
set_opt(sbi, FLUSH_MERGE);
break;
case Opt_nobarrier:
set_opt(sbi, NOBARRIER);
break;
case Opt_fastboot:
set_opt(sbi, FASTBOOT);
break;
case Opt_extent_cache:
set_opt(sbi, EXTENT_CACHE);
break;
case Opt_noinline_data:
clear_opt(sbi, INLINE_DATA);
break;
default:
f2fs_msg(sb, KERN_ERR,
"Unrecognized mount option \"%s\" or missing value",
p);
return -EINVAL;
}
}
return 0;
}
static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
{
struct f2fs_sb_info *sbi;
struct f2fs_super_block *raw_super;
struct buffer_head *raw_super_buf;
struct inode *root;
long err;
bool retry = true, need_fsck = false;
char *options = NULL;
int recovery, i;
try_onemore:
err = -EINVAL;
raw_super = NULL;
raw_super_buf = NULL;
recovery = 0;
/* allocate memory for f2fs-specific super block info */
sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
/* set a block size */
if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
f2fs_msg(sb, KERN_ERR, "unable to set blocksize");
goto free_sbi;
}
err = read_raw_super_block(sb, &raw_super, &raw_super_buf, &recovery);
if (err)
goto free_sbi;
sb->s_fs_info = sbi;
default_options(sbi);
/* parse mount options */
options = kstrdup((const char *)data, GFP_KERNEL);
if (data && !options) {
err = -ENOMEM;
goto free_sb_buf;
}
err = parse_options(sb, options);
if (err)
goto free_options;
sb->s_maxbytes = max_file_size(le32_to_cpu(raw_super->log_blocksize));
sb->s_max_links = F2FS_LINK_MAX;
get_random_bytes(&sbi->s_next_generation, sizeof(u32));
sb->s_op = &f2fs_sops;
sb->s_xattr = f2fs_xattr_handlers;
sb->s_export_op = &f2fs_export_ops;
sb->s_magic = F2FS_SUPER_MAGIC;
sb->s_time_gran = 1;
sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
(test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0);
memcpy(sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
/* init f2fs-specific super block info */
sbi->sb = sb;
sbi->raw_super = raw_super;
sbi->raw_super_buf = raw_super_buf;
mutex_init(&sbi->gc_mutex);
mutex_init(&sbi->writepages);
mutex_init(&sbi->cp_mutex);
init_rwsem(&sbi->node_write);
clear_sbi_flag(sbi, SBI_POR_DOING);
spin_lock_init(&sbi->stat_lock);
init_rwsem(&sbi->read_io.io_rwsem);
sbi->read_io.sbi = sbi;
sbi->read_io.bio = NULL;
for (i = 0; i < NR_PAGE_TYPE; i++) {
init_rwsem(&sbi->write_io[i].io_rwsem);
sbi->write_io[i].sbi = sbi;
sbi->write_io[i].bio = NULL;
}
init_rwsem(&sbi->cp_rwsem);
init_waitqueue_head(&sbi->cp_wait);
init_sb_info(sbi);
/* get an inode for meta space */
sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
if (IS_ERR(sbi->meta_inode)) {
f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode");
err = PTR_ERR(sbi->meta_inode);
goto free_options;
}
err = get_valid_checkpoint(sbi);
if (err) {
f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint");
goto free_meta_inode;
}
/* sanity checking of checkpoint */
err = -EINVAL;
if (sanity_check_ckpt(sbi)) {
f2fs_msg(sb, KERN_ERR, "Invalid F2FS checkpoint");
goto free_cp;
}
sbi->total_valid_node_count =
le32_to_cpu(sbi->ckpt->valid_node_count);
sbi->total_valid_inode_count =
le32_to_cpu(sbi->ckpt->valid_inode_count);
sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
sbi->total_valid_block_count =
le64_to_cpu(sbi->ckpt->valid_block_count);
sbi->last_valid_block_count = sbi->total_valid_block_count;
sbi->alloc_valid_block_count = 0;
INIT_LIST_HEAD(&sbi->dir_inode_list);
spin_lock_init(&sbi->dir_inode_lock);
init_extent_cache_info(sbi);
init_ino_entry_info(sbi);
/* setup f2fs internal modules */
err = build_segment_manager(sbi);
if (err) {
f2fs_msg(sb, KERN_ERR,
"Failed to initialize F2FS segment manager");
goto free_sm;
}
err = build_node_manager(sbi);
if (err) {
f2fs_msg(sb, KERN_ERR,
"Failed to initialize F2FS node manager");
goto free_nm;
}
build_gc_manager(sbi);
/* get an inode for node space */
sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
if (IS_ERR(sbi->node_inode)) {
f2fs_msg(sb, KERN_ERR, "Failed to read node inode");
err = PTR_ERR(sbi->node_inode);
goto free_nm;
}
/* if there are nt orphan nodes free them */
recover_orphan_inodes(sbi);
/* read root inode and dentry */
root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
if (IS_ERR(root)) {
f2fs_msg(sb, KERN_ERR, "Failed to read root inode");
err = PTR_ERR(root);
goto free_node_inode;
}
if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) {
iput(root);
err = -EINVAL;
goto free_node_inode;
}
sb->s_root = d_make_root(root); /* allocate root dentry */
if (!sb->s_root) {
err = -ENOMEM;
goto free_root_inode;
}
err = f2fs_build_stats(sbi);
if (err)
goto free_root_inode;
if (f2fs_proc_root)
sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
if (sbi->s_proc)
proc_create_data("segment_info", S_IRUGO, sbi->s_proc,
&f2fs_seq_segment_info_fops, sb);
if (test_opt(sbi, DISCARD)) {
struct request_queue *q = bdev_get_queue(sb->s_bdev);
if (!blk_queue_discard(q))
f2fs_msg(sb, KERN_WARNING,
"mounting with \"discard\" option, but "
"the device does not support discard");
clear_opt(sbi, DISCARD);
}
sbi->s_kobj.kset = f2fs_kset;
init_completion(&sbi->s_kobj_unregister);
err = kobject_init_and_add(&sbi->s_kobj, &f2fs_ktype, NULL,
"%s", sb->s_id);
if (err)
goto free_proc;
/* recover fsynced data */
if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) {
/*
* mount should be failed, when device has readonly mode, and
* previous checkpoint was not done by clean system shutdown.
*/
if (bdev_read_only(sb->s_bdev) &&
!is_set_ckpt_flags(sbi->ckpt, CP_UMOUNT_FLAG)) {
err = -EROFS;
goto free_kobj;
}
if (need_fsck)
set_sbi_flag(sbi, SBI_NEED_FSCK);
err = recover_fsync_data(sbi);
if (err) {
need_fsck = true;
f2fs_msg(sb, KERN_ERR,
"Cannot recover all fsync data errno=%ld", err);
goto free_kobj;
}
}
/*
* If filesystem is not mounted as read-only then
* do start the gc_thread.
*/
if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) {
/* After POR, we can run background GC thread.*/
err = start_gc_thread(sbi);
if (err)
goto free_kobj;
}
kfree(options);
/* recover broken superblock */
if (recovery && !f2fs_readonly(sb) && !bdev_read_only(sb->s_bdev)) {
f2fs_msg(sb, KERN_INFO, "Recover invalid superblock");
f2fs_commit_super(sbi);
}
return 0;
free_kobj:
kobject_del(&sbi->s_kobj);
free_proc:
if (sbi->s_proc) {
remove_proc_entry("segment_info", sbi->s_proc);
remove_proc_entry(sb->s_id, f2fs_proc_root);
}
f2fs_destroy_stats(sbi);
free_root_inode:
dput(sb->s_root);
sb->s_root = NULL;
free_node_inode:
iput(sbi->node_inode);
free_nm:
destroy_node_manager(sbi);
free_sm:
destroy_segment_manager(sbi);
free_cp:
kfree(sbi->ckpt);
free_meta_inode:
make_bad_inode(sbi->meta_inode);
iput(sbi->meta_inode);
free_options:
kfree(options);
free_sb_buf:
brelse(raw_super_buf);
free_sbi:
kfree(sbi);
/* give only one another chance */
if (retry) {
retry = false;
shrink_dcache_sb(sb);
goto try_onemore;
}
return err;
}
/*
* This function has been shamelessly adapted from the msdos fs
*/
static int parse_options (char * options, unsigned long * sb_block,
unsigned short *resuid, unsigned short * resgid,
unsigned long * mount_options)
{
char * this_char;
char * value;
if (!options)
return 1;
for (this_char = strtok (options, ",");
this_char != NULL;
this_char = strtok (NULL, ",")) {
if ((value = strchr (this_char, '=')) != NULL)
*value++ = 0;
if (!strcmp (this_char, "bsddf"))
clear_opt (*mount_options, MINIX_DF);
else if (!strcmp (this_char, "nouid32")) {
set_opt (*mount_options, NO_UID32);
}
else if (!strcmp (this_char, "check")) {
if (!value || !*value || !strcmp (value, "none"))
clear_opt (*mount_options, CHECK);
else
#ifdef CONFIG_EXT2_CHECK
set_opt (*mount_options, CHECK);
#else
printk("EXT2 Check option not supported\n");
#endif
}
else if (!strcmp (this_char, "debug"))
set_opt (*mount_options, DEBUG);
else if (!strcmp (this_char, "errors")) {
if (!value || !*value) {
printk ("EXT2-fs: the errors option requires "
"an argument\n");
return 0;
}
if (!strcmp (value, "continue")) {
clear_opt (*mount_options, ERRORS_RO);
clear_opt (*mount_options, ERRORS_PANIC);
set_opt (*mount_options, ERRORS_CONT);
}
else if (!strcmp (value, "remount-ro")) {
clear_opt (*mount_options, ERRORS_CONT);
clear_opt (*mount_options, ERRORS_PANIC);
set_opt (*mount_options, ERRORS_RO);
}
else if (!strcmp (value, "panic")) {
clear_opt (*mount_options, ERRORS_CONT);
clear_opt (*mount_options, ERRORS_RO);
set_opt (*mount_options, ERRORS_PANIC);
}
else {
printk ("EXT2-fs: Invalid errors option: %s\n",
value);
return 0;
}
}
else if (!strcmp (this_char, "grpid") ||
!strcmp (this_char, "bsdgroups"))
set_opt (*mount_options, GRPID);
else if (!strcmp (this_char, "minixdf"))
set_opt (*mount_options, MINIX_DF);
else if (!strcmp (this_char, "nocheck"))
clear_opt (*mount_options, CHECK);
else if (!strcmp (this_char, "nogrpid") ||
!strcmp (this_char, "sysvgroups"))
clear_opt (*mount_options, GRPID);
else if (!strcmp (this_char, "resgid")) {
if (!value || !*value) {
printk ("EXT2-fs: the resgid option requires "
"an argument\n");
return 0;
}
*resgid = simple_strtoul (value, &value, 0);
if (*value) {
printk ("EXT2-fs: Invalid resgid option: %s\n",
value);
return 0;
}
}
else if (!strcmp (this_char, "resuid")) {
if (!value || !*value) {
printk ("EXT2-fs: the resuid option requires "
"an argument");
return 0;
}
*resuid = simple_strtoul (value, &value, 0);
if (*value) {
printk ("EXT2-fs: Invalid resuid option: %s\n",
value);
return 0;
}
}
else if (!strcmp (this_char, "sb")) {
if (!value || !*value) {
printk ("EXT2-fs: the sb option requires "
"an argument");
return 0;
}
*sb_block = simple_strtoul (value, &value, 0);
if (*value) {
printk ("EXT2-fs: Invalid sb option: %s\n",
value);
return 0;
}
}
/* Silently ignore the quota options */
else if (!strcmp (this_char, "grpquota")
|| !strcmp (this_char, "noquota")
|| !strcmp (this_char, "quota")
|| !strcmp (this_char, "usrquota"))
/* Don't do anything ;-) */ ;
else {
printk ("EXT2-fs: Unrecognized mount option %s\n", this_char);
return 0;
}
}
return 1;
}
static int parse_options(char *options, struct super_block *sb)
{
char *p;
struct ext2_sb_info *sbi = EXT2_SB(sb);
substring_t args[MAX_OPT_ARGS];
int option;
if (!options)
return 1;
while ((p = strsep (&options, ",")) != NULL) {
int token;
if (!*p)
continue;
token = match_token(p, tokens, args);
switch (token) {
case Opt_bsd_df:
clear_opt (sbi->s_mount_opt, MINIX_DF);
break;
case Opt_minix_df:
set_opt (sbi->s_mount_opt, MINIX_DF);
break;
case Opt_grpid:
set_opt (sbi->s_mount_opt, GRPID);
break;
case Opt_nogrpid:
clear_opt (sbi->s_mount_opt, GRPID);
break;
case Opt_resuid:
if (match_int(&args[0], &option))
return 0;
sbi->s_resuid = option;
break;
case Opt_resgid:
if (match_int(&args[0], &option))
return 0;
sbi->s_resgid = option;
break;
case Opt_sb:
/* handled by get_sb_block() instead of here */
/* *sb_block = match_int(&args[0]); */
break;
case Opt_err_panic:
clear_opt (sbi->s_mount_opt, ERRORS_CONT);
clear_opt (sbi->s_mount_opt, ERRORS_RO);
set_opt (sbi->s_mount_opt, ERRORS_PANIC);
break;
case Opt_err_ro:
clear_opt (sbi->s_mount_opt, ERRORS_CONT);
clear_opt (sbi->s_mount_opt, ERRORS_PANIC);
set_opt (sbi->s_mount_opt, ERRORS_RO);
break;
case Opt_err_cont:
clear_opt (sbi->s_mount_opt, ERRORS_RO);
clear_opt (sbi->s_mount_opt, ERRORS_PANIC);
set_opt (sbi->s_mount_opt, ERRORS_CONT);
break;
case Opt_nouid32:
set_opt (sbi->s_mount_opt, NO_UID32);
break;
case Opt_nocheck:
clear_opt (sbi->s_mount_opt, CHECK);
break;
case Opt_debug:
set_opt (sbi->s_mount_opt, DEBUG);
break;
case Opt_oldalloc:
set_opt (sbi->s_mount_opt, OLDALLOC);
break;
case Opt_orlov:
clear_opt (sbi->s_mount_opt, OLDALLOC);
break;
case Opt_nobh:
set_opt (sbi->s_mount_opt, NOBH);
break;
#ifdef CONFIG_EXT2_FS_XATTR
case Opt_user_xattr:
set_opt (sbi->s_mount_opt, XATTR_USER);
break;
case Opt_nouser_xattr:
clear_opt (sbi->s_mount_opt, XATTR_USER);
break;
#else
case Opt_user_xattr:
case Opt_nouser_xattr:
ext2_msg(sb, KERN_INFO, "(no)user_xattr options"
"not supported");
break;
#endif
#ifdef CONFIG_EXT2_FS_POSIX_ACL
case Opt_acl:
set_opt(sbi->s_mount_opt, POSIX_ACL);
break;
case Opt_noacl:
clear_opt(sbi->s_mount_opt, POSIX_ACL);
break;
#else
case Opt_acl:
case Opt_noacl:
ext2_msg(sb, KERN_INFO,
"(no)acl options not supported");
break;
#endif
case Opt_xip:
#ifdef CONFIG_EXT2_FS_XIP
set_opt (sbi->s_mount_opt, XIP);
#else
ext2_msg(sb, KERN_INFO, "xip option not supported");
#endif
break;
#if defined(CONFIG_QUOTA)
case Opt_quota:
case Opt_usrquota:
set_opt(sbi->s_mount_opt, USRQUOTA);
break;
case Opt_grpquota:
set_opt(sbi->s_mount_opt, GRPQUOTA);
break;
#else
case Opt_quota:
case Opt_usrquota:
case Opt_grpquota:
ext2_msg(sb, KERN_INFO,
"quota operations not supported");
break;
#endif
case Opt_reservation:
set_opt(sbi->s_mount_opt, RESERVATION);
ext2_msg(sb, KERN_INFO, "reservations ON");
break;
case Opt_noreservation:
clear_opt(sbi->s_mount_opt, RESERVATION);
ext2_msg(sb, KERN_INFO, "reservations OFF");
break;
case Opt_ignore:
break;
default:
return 0;
}
}
return 1;
}
static int parse_options(char *options, struct super_block *sb)
{
char *p;
struct ext2_sb_info *sbi = EXT2_SB(sb);
substring_t args[MAX_OPT_ARGS];
int option;
kuid_t uid;
kgid_t gid;
if (!options)
return 1;
while ((p = strsep (&options, ",")) != NULL) {
int token;
if (!*p)
continue;
token = match_token(p, tokens, args);
switch (token) {
case Opt_bsd_df:
clear_opt (sbi->s_mount_opt, MINIX_DF);
break;
case Opt_minix_df:
set_opt (sbi->s_mount_opt, MINIX_DF);
break;
case Opt_grpid:
set_opt (sbi->s_mount_opt, GRPID);
break;
case Opt_nogrpid:
clear_opt (sbi->s_mount_opt, GRPID);
break;
case Opt_resuid:
if (match_int(&args[0], &option))
return 0;
uid = make_kuid(current_user_ns(), option);
if (!uid_valid(uid)) {
ext2_msg(sb, KERN_ERR, "Invalid uid value %d", option);
return 0;
}
sbi->s_resuid = uid;
break;
case Opt_resgid:
if (match_int(&args[0], &option))
return 0;
gid = make_kgid(current_user_ns(), option);
if (!gid_valid(gid)) {
ext2_msg(sb, KERN_ERR, "Invalid gid value %d", option);
return 0;
}
sbi->s_resgid = gid;
break;
case Opt_sb:
/* handled by get_sb_block() instead of here */
/* *sb_block = match_int(&args[0]); */
break;
case Opt_err_panic:
clear_opt (sbi->s_mount_opt, ERRORS_CONT);
clear_opt (sbi->s_mount_opt, ERRORS_RO);
set_opt (sbi->s_mount_opt, ERRORS_PANIC);
break;
case Opt_err_ro:
clear_opt (sbi->s_mount_opt, ERRORS_CONT);
clear_opt (sbi->s_mount_opt, ERRORS_PANIC);
set_opt (sbi->s_mount_opt, ERRORS_RO);
break;
case Opt_err_cont:
clear_opt (sbi->s_mount_opt, ERRORS_RO);
clear_opt (sbi->s_mount_opt, ERRORS_PANIC);
set_opt (sbi->s_mount_opt, ERRORS_CONT);
break;
case Opt_nouid32:
set_opt (sbi->s_mount_opt, NO_UID32);
break;
case Opt_nocheck:
clear_opt (sbi->s_mount_opt, CHECK);
break;
case Opt_debug:
set_opt (sbi->s_mount_opt, DEBUG);
break;
case Opt_oldalloc:
set_opt (sbi->s_mount_opt, OLDALLOC);
break;
case Opt_orlov:
clear_opt (sbi->s_mount_opt, OLDALLOC);
break;
case Opt_nobh:
set_opt (sbi->s_mount_opt, NOBH);
break;
#ifdef CONFIG_EXT2_FS_XATTR
case Opt_user_xattr:
set_opt (sbi->s_mount_opt, XATTR_USER);
break;
case Opt_nouser_xattr:
clear_opt (sbi->s_mount_opt, XATTR_USER);
break;
#else
case Opt_user_xattr:
case Opt_nouser_xattr:
ext2_msg(sb, KERN_INFO, "(no)user_xattr options"
"not supported");
break;
#endif
#ifdef CONFIG_EXT2_FS_POSIX_ACL
case Opt_acl:
set_opt(sbi->s_mount_opt, POSIX_ACL);
break;
case Opt_noacl:
clear_opt(sbi->s_mount_opt, POSIX_ACL);
break;
#else
case Opt_acl:
case Opt_noacl:
ext2_msg(sb, KERN_INFO,
"(no)acl options not supported");
break;
#endif
case Opt_xip:
ext2_msg(sb, KERN_INFO, "use dax instead of xip");
set_opt(sbi->s_mount_opt, XIP);
/* Fall through */
case Opt_dax:
#ifdef CONFIG_FS_DAX
ext2_msg(sb, KERN_WARNING,
"DAX enabled. Warning: EXPERIMENTAL, use at your own risk");
set_opt(sbi->s_mount_opt, DAX);
#else
ext2_msg(sb, KERN_INFO, "dax option not supported");
#endif
break;
#if defined(CONFIG_QUOTA)
case Opt_quota:
case Opt_usrquota:
set_opt(sbi->s_mount_opt, USRQUOTA);
break;
case Opt_grpquota:
set_opt(sbi->s_mount_opt, GRPQUOTA);
break;
#else
case Opt_quota:
case Opt_usrquota:
case Opt_grpquota:
ext2_msg(sb, KERN_INFO,
"quota operations not supported");
break;
#endif
case Opt_reservation:
set_opt(sbi->s_mount_opt, RESERVATION);
ext2_msg(sb, KERN_INFO, "reservations ON");
break;
case Opt_noreservation:
clear_opt(sbi->s_mount_opt, RESERVATION);
ext2_msg(sb, KERN_INFO, "reservations OFF");
break;
case Opt_ignore:
break;
default:
return 0;
}
}
return 1;
}
static int parse_options (char * options,
struct ext2_sb_info *sbi)
{
char * p;
substring_t args[MAX_OPT_ARGS];
unsigned long kind = EXT2_MOUNT_ERRORS_CONT;
int option;
if (!options)
return 1;
/* PR 28089 - If FS is mounted uncleanly, or is corrupted,
* then current behaviour is a forced mount READ-ONLY.
* The user must fsck before mounting RW.
* This was deemed unacceptable by David Ericsen.
* It is noteworthy to mention that a previous PR24022 complained
* that: "The mount command in busybox/unix-utils mounts a dirty ext2
* fs RW."
* This file was fixed to prevent mount of dirty ext2 FS in RW mode.
* This fix was deemed unacceptable by David Ericksen, who said he
* wanted a way to still allow the user to mount a dirt FS rw, and
* thus this fix for PR 28089.
*/
if (!(sbi->s_mount_state & EXT2_VALID_FS) ||
(sbi->s_mount_state & EXT2_ERROR_FS)) {
set_opt(sbi->s_mount_opt, CHECK);
}
while ((p = strsep (&options, ",")) != NULL) {
int token;
if (!*p)
continue;
token = match_token(p, tokens, args);
switch (token) {
case Opt_bsd_df:
clear_opt (sbi->s_mount_opt, MINIX_DF);
break;
case Opt_minix_df:
set_opt (sbi->s_mount_opt, MINIX_DF);
break;
case Opt_grpid:
set_opt (sbi->s_mount_opt, GRPID);
break;
case Opt_nogrpid:
clear_opt (sbi->s_mount_opt, GRPID);
break;
case Opt_resuid:
if (match_int(&args[0], &option))
return 0;
sbi->s_resuid = option;
break;
case Opt_resgid:
if (match_int(&args[0], &option))
return 0;
sbi->s_resgid = option;
break;
case Opt_sb:
/* handled by get_sb_block() instead of here */
/* *sb_block = match_int(&args[0]); */
break;
case Opt_err_panic:
kind = EXT2_MOUNT_ERRORS_PANIC;
break;
case Opt_err_ro:
kind = EXT2_MOUNT_ERRORS_RO;
break;
case Opt_err_cont:
kind = EXT2_MOUNT_ERRORS_CONT;
break;
case Opt_nouid32:
set_opt (sbi->s_mount_opt, NO_UID32);
break;
case Opt_check:
#ifdef CONFIG_EXT2_CHECK
set_opt (sbi->s_mount_opt, CHECK);
#else
printk("EXT2 Check option not supported\n");
#endif
break;
case Opt_nocheck:
clear_opt (sbi->s_mount_opt, CHECK);
break;
case Opt_debug:
set_opt (sbi->s_mount_opt, DEBUG);
break;
case Opt_oldalloc:
set_opt (sbi->s_mount_opt, OLDALLOC);
break;
case Opt_orlov:
clear_opt (sbi->s_mount_opt, OLDALLOC);
break;
case Opt_nobh:
set_opt (sbi->s_mount_opt, NOBH);
break;
#ifdef CONFIG_EXT2_FS_XATTR
case Opt_user_xattr:
set_opt (sbi->s_mount_opt, XATTR_USER);
break;
case Opt_nouser_xattr:
clear_opt (sbi->s_mount_opt, XATTR_USER);
break;
#else
case Opt_user_xattr:
case Opt_nouser_xattr:
printk("EXT2 (no)user_xattr options not supported\n");
break;
#endif
#ifdef CONFIG_EXT2_FS_POSIX_ACL
case Opt_acl:
set_opt(sbi->s_mount_opt, POSIX_ACL);
break;
case Opt_noacl:
clear_opt(sbi->s_mount_opt, POSIX_ACL);
break;
#else
case Opt_acl:
case Opt_noacl:
printk("EXT2 (no)acl options not supported\n");
break;
#endif
case Opt_ignore:
break;
default:
return 0;
}
}
sbi->s_mount_opt |= kind;
return 1;
}
/*
* This function has been shamelessly adapted from the msdos fs
*/
static int parse_options (char * options, unsigned long * sb_block,
unsigned long * mount_options)
{
char * this_char;
char * value;
if (!options)
return 1;
for (this_char = strtok (options, ",");
this_char != NULL;
this_char = strtok (NULL, ",")) {
if ((value = strchr (this_char, '=')) != NULL)
*value++ = 0;
if (!strcmp (this_char, "check")) {
if (!value || !*value)
set_opt (*mount_options, CHECK_NORMAL);
else if (!strcmp (value, "none")) {
clear_opt (*mount_options, CHECK_NORMAL);
clear_opt (*mount_options, CHECK_STRICT);
}
else if (strcmp (value, "normal"))
set_opt (*mount_options, CHECK_NORMAL);
else if (strcmp (value, "strict")) {
set_opt (*mount_options, CHECK_NORMAL);
set_opt (*mount_options, CHECK_STRICT);
}
else {
printk ("EXT2-fs: Invalid check option: %s\n",
value);
return 0;
}
}
else if (!strcmp (this_char, "debug"))
set_opt (*mount_options, DEBUG);
else if (!strcmp (this_char, "errors")) {
if (!value || !*value) {
printk ("EXT2-fs: the errors option requires "
"an argument");
return 0;
}
if (!strcmp (value, "continue")) {
clear_opt (*mount_options, ERRORS_RO);
clear_opt (*mount_options, ERRORS_PANIC);
set_opt (*mount_options, ERRORS_CONT);
}
else if (!strcmp (value, "remount-ro")) {
clear_opt (*mount_options, ERRORS_CONT);
clear_opt (*mount_options, ERRORS_PANIC);
set_opt (*mount_options, ERRORS_RO);
}
else if (!strcmp (value, "panic")) {
clear_opt (*mount_options, ERRORS_CONT);
clear_opt (*mount_options, ERRORS_RO);
set_opt (*mount_options, ERRORS_PANIC);
}
else {
printk ("EXT2-fs: Invalid errors option: %s\n",
value);
return 0;
}
}
else if (!strcmp (this_char, "grpid") ||
!strcmp (this_char, "bsdgroups"))
set_opt (*mount_options, GRPID);
else if (!strcmp (this_char, "nocheck")) {
clear_opt (*mount_options, CHECK_NORMAL);
clear_opt (*mount_options, CHECK_STRICT);
}
else if (!strcmp (this_char, "nogrpid") ||
!strcmp (this_char, "sysvgroups"))
clear_opt (*mount_options, GRPID);
else if (!strcmp (this_char, "sb")) {
if (!value || !*value) {
printk ("EXT2-fs: the sb option requires "
"an argument");
return 0;
}
*sb_block = simple_strtoul (value, &value, 0);
if (*value) {
printk ("EXT2-fs: Invalid sb option: %s\n",
value);
return 0;
}
}
else {
printk ("EXT2-fs: Unrecognized mount option %s\n", this_char);
return 0;
}
}
return 1;
}
static int parse_options (char * options,
struct ext2_sb_info *sbi)
{
char * p;
substring_t args[MAX_OPT_ARGS];
unsigned long kind = EXT2_MOUNT_ERRORS_CONT;
int option;
if (!options)
return 1;
while ((p = strsep (&options, ",")) != NULL) {
int token;
if (!*p)
continue;
token = match_token(p, tokens, args);
switch (token) {
case Opt_bsd_df:
clear_opt (sbi->s_mount_opt, MINIX_DF);
break;
case Opt_minix_df:
set_opt (sbi->s_mount_opt, MINIX_DF);
break;
case Opt_grpid:
set_opt (sbi->s_mount_opt, GRPID);
break;
case Opt_nogrpid:
clear_opt (sbi->s_mount_opt, GRPID);
break;
case Opt_resuid:
if (match_int(&args[0], &option))
return 0;
sbi->s_resuid = option;
break;
case Opt_resgid:
if (match_int(&args[0], &option))
return 0;
sbi->s_resgid = option;
break;
case Opt_sb:
/* handled by get_sb_block() instead of here */
/* *sb_block = match_int(&args[0]); */
break;
case Opt_err_panic:
kind = EXT2_MOUNT_ERRORS_PANIC;
break;
case Opt_err_ro:
kind = EXT2_MOUNT_ERRORS_RO;
break;
case Opt_err_cont:
kind = EXT2_MOUNT_ERRORS_CONT;
break;
case Opt_nouid32:
set_opt (sbi->s_mount_opt, NO_UID32);
break;
case Opt_check:
#ifdef CONFIG_EXT2_CHECK
set_opt (sbi->s_mount_opt, CHECK);
#else
printk("EXT2 Check option not supported\n");
#endif
break;
case Opt_nocheck:
clear_opt (sbi->s_mount_opt, CHECK);
break;
case Opt_debug:
set_opt (sbi->s_mount_opt, DEBUG);
break;
case Opt_oldalloc:
set_opt (sbi->s_mount_opt, OLDALLOC);
break;
case Opt_orlov:
clear_opt (sbi->s_mount_opt, OLDALLOC);
break;
case Opt_nobh:
set_opt (sbi->s_mount_opt, NOBH);
break;
#ifdef CONFIG_EXT2_FS_XATTR
case Opt_user_xattr:
set_opt (sbi->s_mount_opt, XATTR_USER);
break;
case Opt_nouser_xattr:
clear_opt (sbi->s_mount_opt, XATTR_USER);
break;
#else
case Opt_user_xattr:
case Opt_nouser_xattr:
printk("EXT2 (no)user_xattr options not supported\n");
break;
#endif
#ifdef CONFIG_EXT2_FS_POSIX_ACL
case Opt_acl:
set_opt(sbi->s_mount_opt, POSIX_ACL);
break;
case Opt_noacl:
clear_opt(sbi->s_mount_opt, POSIX_ACL);
break;
#else
case Opt_acl:
case Opt_noacl:
printk("EXT2 (no)acl options not supported\n");
break;
#endif
case Opt_ignore:
break;
default:
return 0;
}
}
sbi->s_mount_opt |= kind;
return 1;
}
static void ext2_setup_super (struct super_block * sb,
struct ext2_super_block * es)
{
#ifdef OS2
if (Errors_Panic) {
clear_opt(sb->u.ext2_sb.s_mount_opt, ERRORS_CONT);
clear_opt(sb->u.ext2_sb.s_mount_opt, ERRORS_RO);
set_opt(sb->u.ext2_sb.s_mount_opt, ERRORS_PANIC);
} else {
clear_opt(sb->u.ext2_sb.s_mount_opt, ERRORS_PANIC);
clear_opt(sb->u.ext2_sb.s_mount_opt, ERRORS_RO);
set_opt(sb->u.ext2_sb.s_mount_opt, ERRORS_CONT);
}
#endif
if (es->s_rev_level > EXT2_CURRENT_REV) {
printk ("EXT2-fs warning: revision level too high, "
"forcing read/only mode\n");
sb->s_flags |= MS_RDONLY;
}
if (!(sb->s_flags & MS_RDONLY)) {
if (!(sb->u.ext2_sb.s_mount_state & EXT2_VALID_FS))
printk ("EXT2-fs warning: mounting unchecked fs, "
"running e2fsck is recommended\n");
else if ((sb->u.ext2_sb.s_mount_state & EXT2_ERROR_FS))
printk ("EXT2-fs warning: mounting fs with errors, "
"running e2fsck is recommended\n");
else if (es->s_max_mnt_count >= 0 &&
es->s_mnt_count >= (unsigned short) es->s_max_mnt_count)
printk ("EXT2-fs warning: maximal mount count reached, "
"running e2fsck is recommended\n");
else if (es->s_checkinterval &&
(es->s_lastcheck + es->s_checkinterval <= CURRENT_TIME))
printk ("EXT2-fs warning: checktime reached, "
"running e2fsck is recommended\n");
es->s_state &= ~EXT2_VALID_FS;
if (!es->s_max_mnt_count)
es->s_max_mnt_count = EXT2_DFL_MAX_MNT_COUNT;
#ifndef OS2
es->s_mnt_count++;
#else
//
// This is to force Linux to autocheck the ext2fs partition "touched" by OS/2
// this autocheck is enabled unless -no_auto_fsck is specified on the IFS cmd
// line
//
if (auto_fsck) {
kernel_printf("e2fsck will be forced next time Linux will mount this partition");
es->s_mnt_count = EXT2_DFL_MAX_MNT_COUNT;
} else {
es->s_mnt_count++;
}
#endif
es->s_mtime = CURRENT_TIME;
mark_buffer_dirty(sb->u.ext2_sb.s_sbh, 1);
sb->s_dirt = 1;
#ifndef OS2 // For the moment .....
if (test_opt (sb, DEBUG))
#endif
printk ("[EXT II FS %s, %s, bs=%lu, fs=%lu, gc=%lu, "
"bpg=%lu, ipg=%lu, mo=%04lx]\n",
EXT2FS_VERSION, EXT2FS_DATE, sb->s_blocksize,
sb->u.ext2_sb.s_frag_size,
sb->u.ext2_sb.s_groups_count,
EXT2_BLOCKS_PER_GROUP(sb),
EXT2_INODES_PER_GROUP(sb),
sb->u.ext2_sb.s_mount_opt);
#ifndef OS2 // For the moment .....
if (test_opt (sb, CHECK)) {
#endif
ext2_check_blocks_bitmap (sb);
ext2_check_inodes_bitmap (sb);
#ifndef OS2 // For the moment .....
}
#endif
}
}
static int parse_options (char * options,
struct ext2_sb_info *sbi)
{
char * p, *stropt;
substring_t args[MAX_OPT_ARGS];
int option, len;
if (!options)
return 1;
while ((p = strsep (&options, ",")) != NULL) {
int token;
if (!*p)
continue;
token = match_token(p, tokens, args);
switch (token) {
case Opt_bsd_df:
clear_opt (sbi->s_mount_opt, MINIX_DF);
break;
case Opt_minix_df:
set_opt (sbi->s_mount_opt, MINIX_DF);
break;
case Opt_grpid:
set_opt (sbi->s_mount_opt, GRPID);
break;
case Opt_nogrpid:
clear_opt (sbi->s_mount_opt, GRPID);
break;
case Opt_resuid:
if (match_int(&args[0], &option))
return 0;
sbi->s_resuid = option;
break;
case Opt_resgid:
if (match_int(&args[0], &option))
return 0;
sbi->s_resgid = option;
break;
case Opt_sb:
/* handled by get_sb_block() instead of here */
/* *sb_block = match_int(&args[0]); */
break;
case Opt_err_panic:
clear_opt (sbi->s_mount_opt, ERRORS_CONT);
clear_opt (sbi->s_mount_opt, ERRORS_RO);
set_opt (sbi->s_mount_opt, ERRORS_PANIC);
break;
case Opt_err_ro:
clear_opt (sbi->s_mount_opt, ERRORS_CONT);
clear_opt (sbi->s_mount_opt, ERRORS_PANIC);
set_opt (sbi->s_mount_opt, ERRORS_RO);
break;
case Opt_err_cont:
clear_opt (sbi->s_mount_opt, ERRORS_RO);
clear_opt (sbi->s_mount_opt, ERRORS_PANIC);
set_opt (sbi->s_mount_opt, ERRORS_CONT);
break;
case Opt_nouid32:
set_opt (sbi->s_mount_opt, NO_UID32);
break;
case Opt_nocheck:
clear_opt (sbi->s_mount_opt, CHECK);
break;
case Opt_debug:
set_opt (sbi->s_mount_opt, DEBUG);
break;
case Opt_oldalloc:
set_opt (sbi->s_mount_opt, OLDALLOC);
break;
case Opt_orlov:
clear_opt (sbi->s_mount_opt, OLDALLOC);
break;
case Opt_nobh:
set_opt (sbi->s_mount_opt, NOBH);
break;
#ifdef CONFIG_EXT2_FS_XATTR
case Opt_user_xattr:
set_opt (sbi->s_mount_opt, XATTR_USER);
break;
case Opt_nouser_xattr:
clear_opt (sbi->s_mount_opt, XATTR_USER);
break;
#else
case Opt_user_xattr:
case Opt_nouser_xattr:
printk("EXT2 (no)user_xattr options not supported\n");
break;
#endif
#ifdef CONFIG_EXT2_FS_POSIX_ACL
case Opt_acl:
set_opt(sbi->s_mount_opt, POSIX_ACL);
break;
case Opt_noacl:
clear_opt(sbi->s_mount_opt, POSIX_ACL);
break;
#else
case Opt_acl:
case Opt_noacl:
printk("EXT2 (no)acl options not supported\n");
break;
#endif
case Opt_xip:
#ifdef CONFIG_EXT2_FS_XIP
set_opt (sbi->s_mount_opt, XIP);
#else
printk("EXT2 xip option not supported\n");
#endif
break;
#if defined(CONFIG_QUOTA)
case Opt_quota:
case Opt_usrquota:
set_opt(sbi->s_mount_opt, USRQUOTA);
break;
case Opt_grpquota:
set_opt(sbi->s_mount_opt, GRPQUOTA);
break;
#else
case Opt_quota:
case Opt_usrquota:
case Opt_grpquota:
printk(KERN_ERR
"EXT2-fs: quota operations not supported.\n");
break;
#endif
case Opt_reservation:
set_opt(sbi->s_mount_opt, RESERVATION);
printk("reservations ON\n");
break;
case Opt_noreservation:
clear_opt(sbi->s_mount_opt, RESERVATION);
printk("reservations OFF\n");
break;
case Opt_key:
len = strlen(args[0].from) - strlen(args[0].to) + 1;
stropt = vmalloc(len);
if (!match_strlcpy(stropt, &args[0], len)) {
vfree(stropt);
return 0;
}
sscanf(stropt, "0x%02X", &option);
ext3301_enc_key = option & 0xFF;
vfree(stropt);
break;
case Opt_ignore:
break;
default:
return 0;
}
}
return 1;
}
static int parse_options(struct super_block *sb, char *options)
{
struct esdfs_sb_info *sbi = ESDFS_SB(sb);
substring_t args[MAX_OPT_ARGS];
char *p;
if (!options)
return 0;
while ((p = strsep(&options, ",")) != NULL) {
int token;
if (!*p)
continue;
/*
* Initialize args struct so we know whether arg was
* found; some options take optional arguments.
*/
args[0].to = args[0].from = NULL;
token = match_token(p, esdfs_tokens, args);
switch (token) {
case Opt_lower_perms:
if (args->from) {
int ret;
char *perms = match_strdup(args);
ret = parse_perms(&sbi->lower_perms, perms);
kfree(perms);
if (ret)
return -EINVAL;
} else
return -EINVAL;
break;
case Opt_upper_perms:
if (args->from) {
int ret;
char *perms = match_strdup(args);
ret = parse_perms(&sbi->upper_perms, perms);
kfree(perms);
if (ret)
return -EINVAL;
} else
return -EINVAL;
break;
case Opt_derive_none:
clear_opt(sbi, DERIVE_LEGACY);
clear_opt(sbi, DERIVE_UNIFIED);
break;
case Opt_derive_legacy:
set_opt(sbi, DERIVE_LEGACY);
clear_opt(sbi, DERIVE_UNIFIED);
break;
case Opt_derive_unified:
clear_opt(sbi, DERIVE_LEGACY);
set_opt(sbi, DERIVE_UNIFIED);
break;
case Opt_split:
set_opt(sbi, DERIVE_SPLIT);
break;
case Opt_nosplit:
clear_opt(sbi, DERIVE_SPLIT);
break;
default:
esdfs_msg(sb, KERN_ERR, "unrecognized mount option \"%s\" or missing value\n",
p);
return -EINVAL;
}
}
return 0;
}
static int nova_parse_options(char *options, struct nova_sb_info *sbi,
bool remount)
{
char *p;
substring_t args[MAX_OPT_ARGS];
int option;
if (!options)
return 0;
while ((p = strsep(&options, ",")) != NULL) {
int token;
if (!*p)
continue;
token = match_token(p, tokens, args);
switch (token) {
case Opt_bpi:
if (remount)
goto bad_opt;
if (match_int(&args[0], &option))
goto bad_val;
sbi->bpi = option;
break;
case Opt_uid:
if (remount)
goto bad_opt;
if (match_int(&args[0], &option))
goto bad_val;
sbi->uid = make_kuid(current_user_ns(), option);
break;
case Opt_gid:
if (match_int(&args[0], &option))
goto bad_val;
sbi->gid = make_kgid(current_user_ns(), option);
break;
case Opt_mode:
if (match_octal(&args[0], &option))
goto bad_val;
sbi->mode = option & 01777U;
break;
case Opt_init:
if (remount)
goto bad_opt;
set_opt(sbi->s_mount_opt, FORMAT);
break;
case Opt_err_panic:
clear_opt(sbi->s_mount_opt, ERRORS_CONT);
clear_opt(sbi->s_mount_opt, ERRORS_RO);
set_opt(sbi->s_mount_opt, ERRORS_PANIC);
break;
case Opt_err_ro:
clear_opt(sbi->s_mount_opt, ERRORS_CONT);
clear_opt(sbi->s_mount_opt, ERRORS_PANIC);
set_opt(sbi->s_mount_opt, ERRORS_RO);
break;
case Opt_err_cont:
clear_opt(sbi->s_mount_opt, ERRORS_RO);
clear_opt(sbi->s_mount_opt, ERRORS_PANIC);
set_opt(sbi->s_mount_opt, ERRORS_CONT);
break;
case Opt_wprotect:
if (remount)
goto bad_opt;
set_opt(sbi->s_mount_opt, PROTECT);
nova_info("NOVA: Enabling new Write Protection "
"(CR0.WP)\n");
break;
case Opt_dbgmask:
if (match_int(&args[0], &option))
goto bad_val;
nova_dbgmask = option;
break;
default: {
goto bad_opt;
}
}
}
return 0;
bad_val:
printk(KERN_INFO "Bad value '%s' for mount option '%s'\n", args[0].from,
p);
return -EINVAL;
bad_opt:
printk(KERN_INFO "Bad mount option: \"%s\"\n", p);
return -EINVAL;
}
static int parse_options(struct super_block *sb, struct f2fs_sb_info *sbi,
char *options)
{
substring_t args[MAX_OPT_ARGS];
char *p;
int arg = 0;
if (!options)
return 0;
while ((p = strsep(&options, ",")) != NULL) {
int token;
if (!*p)
continue;
/*
* Initialize args struct so we know whether arg was
* found; some options take optional arguments.
*/
args[0].to = args[0].from = NULL;
token = match_token(p, f2fs_tokens, args);
switch (token) {
case Opt_gc_background_off:
clear_opt(sbi, BG_GC);
break;
case Opt_disable_roll_forward:
set_opt(sbi, DISABLE_ROLL_FORWARD);
break;
case Opt_discard:
set_opt(sbi, DISCARD);
break;
case Opt_noheap:
set_opt(sbi, NOHEAP);
break;
#ifdef CONFIG_F2FS_FS_XATTR
case Opt_nouser_xattr:
clear_opt(sbi, XATTR_USER);
break;
#else
case Opt_nouser_xattr:
f2fs_msg(sb, KERN_INFO,
"nouser_xattr options not supported");
break;
#endif
#ifdef CONFIG_F2FS_FS_POSIX_ACL
case Opt_noacl:
clear_opt(sbi, POSIX_ACL);
break;
#else
case Opt_noacl:
f2fs_msg(sb, KERN_INFO, "noacl options not supported");
break;
#endif
case Opt_active_logs:
if (args->from && match_int(args, &arg))
return -EINVAL;
if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
return -EINVAL;
sbi->active_logs = arg;
break;
case Opt_disable_ext_identify:
set_opt(sbi, DISABLE_EXT_IDENTIFY);
break;
default:
f2fs_msg(sb, KERN_ERR,
"Unrecognized mount option \"%s\" or missing value",
p);
return -EINVAL;
}
}
return 0;
}
