static int
parse_options(char *options, befs_mount_options * opts)
{
char *p;
substring_t args[MAX_OPT_ARGS];
int option;
/* Initialize options */
opts->uid = 0;
opts->gid = 0;
opts->use_uid = 0;
opts->use_gid = 0;
opts->iocharset = NULL;
opts->debug = 0;
if (!options)
return 1;
while ((p = strsep(&options, ",")) != NULL) {
int token;
if (!*p)
continue;
token = match_token(p, befs_tokens, args);
switch (token) {
case Opt_uid:
if (match_int(&args[0], &option))
return 0;
if (option < 0) {
printk(KERN_ERR "BeFS: Invalid uid %d, "
"using default\n", option);
break;
}
opts->uid = option;
opts->use_uid = 1;
break;
case Opt_gid:
if (match_int(&args[0], &option))
return 0;
if (option < 0) {
printk(KERN_ERR "BeFS: Invalid gid %d, "
"using default\n", option);
break;
}
opts->gid = option;
opts->use_gid = 1;
break;
case Opt_charset:
kfree(opts->iocharset);
opts->iocharset = match_strdup(&args[0]);
if (!opts->iocharset) {
printk(KERN_ERR "BeFS: allocation failure for "
"iocharset string\n");
return 0;
}
break;
case Opt_debug:
opts->debug = 1;
break;
default:
printk(KERN_ERR "BeFS: Unrecognized mount option \"%s\" "
"or missing value\n", p);
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 jffs2_parse_options(struct jffs2_sb_info *c, char *data)
{
substring_t args[MAX_OPT_ARGS];
char *p, *name;
unsigned int opt;
if (!data)
return 0;
while ((p = strsep(&data, ","))) {
int token;
if (!*p)
continue;
token = match_token(p, tokens, args);
switch (token) {
case Opt_override_compr:
name = match_strdup(&args[0]);
if (!name)
return -ENOMEM;
if (!strcmp(name, "none"))
c->mount_opts.compr = JFFS2_COMPR_MODE_NONE;
#ifdef CONFIG_JFFS2_LZO
else if (!strcmp(name, "lzo"))
c->mount_opts.compr = JFFS2_COMPR_MODE_FORCELZO;
#endif
#ifdef CONFIG_JFFS2_ZLIB
else if (!strcmp(name, "zlib"))
c->mount_opts.compr =
JFFS2_COMPR_MODE_FORCEZLIB;
#endif
else {
pr_err("Error: unknown compressor \"%s\"\n",
name);
kfree(name);
return -EINVAL;
}
kfree(name);
c->mount_opts.override_compr = true;
break;
case Opt_rp_size:
if (match_int(&args[0], &opt))
return -EINVAL;
opt *= 1024;
if (opt > c->mtd->size) {
pr_warn("Too large reserve pool specified, max "
"is %llu KB\n", c->mtd->size / 1024);
return -EINVAL;
}
c->mount_opts.rp_size = opt;
break;
default:
pr_err("Error: unrecognized mount option '%s' or missing value\n",
p);
return -EINVAL;
}
}
return 0;
}
static int
parse_options(char *options, uid_t *uid, gid_t *gid, int *mode, int *reserved, s32 *root,
int *blocksize, char **prefix, char *volume, unsigned long *mount_opts)
{
char *p;
substring_t args[MAX_OPT_ARGS];
/* Fill in defaults */
*uid = current->uid;
*gid = current->gid;
*reserved = 2;
*root = -1;
*blocksize = -1;
volume[0] = ':';
volume[1] = 0;
*mount_opts = 0;
if (!options)
return 1;
while ((p = strsep(&options, ",")) != NULL) {
int token, n, option;
if (!*p)
continue;
token = match_token(p, tokens, args);
switch (token) {
case Opt_bs:
if (match_int(&args[0], &n))
return -EINVAL;
if (n != 512 && n != 1024 && n != 2048
&& n != 4096) {
printk ("AFFS: Invalid blocksize (512, 1024, 2048, 4096 allowed)\n");
return 0;
}
*blocksize = n;
break;
case Opt_mode:
if (match_octal(&args[0], &option))
return 1;
*mode = option & 0777;
*mount_opts |= SF_SETMODE;
break;
case Opt_mufs:
*mount_opts |= SF_MUFS;
break;
case Opt_prefix:
if (*prefix) { /* Free any previous prefix */
kfree(*prefix);
*prefix = NULL;
}
*prefix = match_strdup(&args[0]);
if (!*prefix)
return 0;
*mount_opts |= SF_PREFIX;
break;
case Opt_protect:
*mount_opts |= SF_IMMUTABLE;
break;
case Opt_reserved:
if (match_int(&args[0], reserved))
return 1;
break;
case Opt_root:
if (match_int(&args[0], root))
return 1;
break;
case Opt_setgid:
if (match_int(&args[0], &option))
return 1;
*gid = option;
*mount_opts |= SF_SETGID;
break;
case Opt_setuid:
if (match_int(&args[0], &option))
return -EINVAL;
*uid = option;
*mount_opts |= SF_SETUID;
break;
case Opt_verbose:
*mount_opts |= SF_VERBOSE;
break;
case Opt_volume: {
char *vol = match_strdup(&args[0]);
strlcpy(volume, vol, 32);
kfree(vol);
break;
}
case Opt_ignore:
/* Silently ignore the quota options */
break;
default:
printk("AFFS: Unrecognized mount option \"%s\" "
"or missing value\n", p);
return 0;
}
}
return 1;
}
static int parse_options(struct super_block *sb, char *options, int silent,
int *debug, struct sdcardfs_mount_options *opts)
{
char *p;
substring_t args[MAX_OPT_ARGS];
int option;
char *string_option;
/* by default, we use AID_MEDIA_RW as uid, gid */
opts->fs_low_uid = AID_MEDIA_RW;
opts->fs_low_gid = AID_MEDIA_RW;
/* by default, we use AID_SDCARD_RW as write_gid */
opts->write_gid = AID_SDCARD_RW;
/* default permission policy
* (DERIVE_NONE | DERIVE_LEGACY | DERIVE_UNIFIED) */
opts->derive = DERIVE_NONE;
opts->split_perms = 0;
/* by default, we use LOWER_FS_EXT4 as lower fs type */
opts->lower_fs = LOWER_FS_EXT4;
/* by default, 0MB is reserved */
opts->reserved_mb = 0;
*debug = 0;
if (!options)
return 0;
while ((p = strsep(&options, ",")) != NULL) {
int token;
if (!*p)
continue;
token = match_token(p, sdcardfs_tokens, args);
switch (token) {
case Opt_debug:
*debug = 1;
break;
case Opt_uid:
if (match_int(&args[0], &option))
return 0;
opts->fs_low_uid = option;
break;
case Opt_gid:
if (match_int(&args[0], &option))
return 0;
opts->fs_low_gid = option;
break;
case Opt_wgid:
if (match_int(&args[0], &option))
return 0;
opts->write_gid = option;
break;
case Opt_split:
opts->split_perms=1;
break;
case Opt_derive:
string_option = match_strdup(&args[0]);
if (!string_option)
return -ENOMEM;
if (!strcmp("none", string_option)) {
opts->derive = DERIVE_NONE;
} else if (!strcmp("legacy", string_option)) {
opts->derive = DERIVE_LEGACY;
} else if (!strcmp("unified", string_option)) {
opts->derive = DERIVE_UNIFIED;
} else {
kfree(string_option);
goto invalid_option;
}
kfree(string_option);
break;
case Opt_lower_fs:
string_option = match_strdup(&args[0]);
if (!string_option)
return -ENOMEM;
if (!strcmp("ext4", string_option)) {
opts->lower_fs = LOWER_FS_EXT4;
} else if (!strcmp("fat", string_option)) {
opts->lower_fs = LOWER_FS_FAT;
} else {
kfree(string_option);
goto invalid_option;
}
kfree(string_option);
break;
case Opt_reserved_mb:
if (match_int(&args[0], &option))
return 0;
opts->reserved_mb = option;
break;
/* unknown option */
default:
invalid_option:
if (!silent) {
printk( KERN_ERR "Unrecognized mount option \"%s\" "
"or missing value", p);
}
return -EINVAL;
}
}
if (*debug) {
printk( KERN_INFO "sdcardfs : options - debug:%d\n", *debug);
printk( KERN_INFO "sdcardfs : options - uid:%d\n",
opts->fs_low_uid);
printk( KERN_INFO "sdcardfs : options - gid:%d\n",
opts->fs_low_gid);
}
return 0;
}
/*
* parse_options()
*
* adapted from linux/fs/msdos/inode.c written 1992,93 by Werner Almesberger
* This function is called by hfs_read_super() to parse the mount options.
*/
static int parse_options(char *options, struct hfs_sb_info *hsb)
{
char *p;
substring_t args[MAX_OPT_ARGS];
int tmp, token;
hsb->s_uid = current_uid();
hsb->s_gid = current_gid();
hsb->s_file_umask = 0133;
hsb->s_dir_umask = 0022;
hsb->s_type = hsb->s_creator = cpu_to_be32(0x3f3f3f3f);
hsb->s_quiet = 0;
hsb->part = -1;
hsb->session = -1;
if (!options)
return 1;
while ((p = strsep(&options, ",")) != NULL) {
if (!*p)
continue;
token = match_token(p, tokens, args);
switch (token) {
case opt_uid:
if (match_int(&args[0], &tmp)) {
printk(KERN_ERR "hfs: uid requires an argument\n");
return 0;
}
hsb->s_uid = (uid_t)tmp;
break;
case opt_gid:
if (match_int(&args[0], &tmp)) {
printk(KERN_ERR "hfs: gid requires an argument\n");
return 0;
}
hsb->s_gid = (gid_t)tmp;
break;
case opt_umask:
if (match_octal(&args[0], &tmp)) {
printk(KERN_ERR "hfs: umask requires a value\n");
return 0;
}
hsb->s_file_umask = (umode_t)tmp;
hsb->s_dir_umask = (umode_t)tmp;
break;
case opt_file_umask:
if (match_octal(&args[0], &tmp)) {
printk(KERN_ERR "hfs: file_umask requires a value\n");
return 0;
}
hsb->s_file_umask = (umode_t)tmp;
break;
case opt_dir_umask:
if (match_octal(&args[0], &tmp)) {
printk(KERN_ERR "hfs: dir_umask requires a value\n");
return 0;
}
hsb->s_dir_umask = (umode_t)tmp;
break;
case opt_part:
if (match_int(&args[0], &hsb->part)) {
printk(KERN_ERR "hfs: part requires an argument\n");
return 0;
}
break;
case opt_session:
if (match_int(&args[0], &hsb->session)) {
printk(KERN_ERR "hfs: session requires an argument\n");
return 0;
}
break;
case opt_type:
if (match_fourchar(&args[0], &hsb->s_type)) {
printk(KERN_ERR "hfs: type requires a 4 character value\n");
return 0;
}
break;
case opt_creator:
if (match_fourchar(&args[0], &hsb->s_creator)) {
printk(KERN_ERR "hfs: creator requires a 4 character value\n");
return 0;
}
break;
case opt_quiet:
hsb->s_quiet = 1;
break;
case opt_codepage:
if (hsb->nls_disk) {
printk(KERN_ERR "hfs: unable to change codepage\n");
return 0;
}
p = match_strdup(&args[0]);
if (p)
hsb->nls_disk = load_nls(p);
if (!hsb->nls_disk) {
printk(KERN_ERR "hfs: unable to load codepage \"%s\"\n", p);
kfree(p);
return 0;
}
kfree(p);
break;
case opt_iocharset:
if (hsb->nls_io) {
printk(KERN_ERR "hfs: unable to change iocharset\n");
return 0;
}
p = match_strdup(&args[0]);
if (p)
hsb->nls_io = load_nls(p);
if (!hsb->nls_io) {
printk(KERN_ERR "hfs: unable to load iocharset \"%s\"\n", p);
kfree(p);
return 0;
}
kfree(p);
break;
default:
return 0;
}
}
if (hsb->nls_disk && !hsb->nls_io) {
hsb->nls_io = load_nls_default();
if (!hsb->nls_io) {
printk(KERN_ERR "hfs: unable to load default iocharset\n");
return 0;
}
}
hsb->s_dir_umask &= 0777;
hsb->s_file_umask &= 0577;
return 1;
}
int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi)
{
char *p;
substring_t args[MAX_OPT_ARGS];
int tmp, token;
if (!input)
goto done;
while ((p = strsep(&input, ",")) != NULL) {
if (!*p)
continue;
token = match_token(p, tokens, args);
switch (token) {
case opt_creator:
if (match_fourchar(&args[0], &sbi->creator)) {
printk(KERN_ERR "hfs: creator requires a 4 character value\n");
return 0;
}
break;
case opt_type:
if (match_fourchar(&args[0], &sbi->type)) {
printk(KERN_ERR "hfs: type requires a 4 character value\n");
return 0;
}
break;
case opt_umask:
if (match_octal(&args[0], &tmp)) {
printk(KERN_ERR "hfs: umask requires a value\n");
return 0;
}
sbi->umask = (umode_t)tmp;
break;
case opt_uid:
if (match_int(&args[0], &tmp)) {
printk(KERN_ERR "hfs: uid requires an argument\n");
return 0;
}
sbi->uid = (uid_t)tmp;
break;
case opt_gid:
if (match_int(&args[0], &tmp)) {
printk(KERN_ERR "hfs: gid requires an argument\n");
return 0;
}
sbi->gid = (gid_t)tmp;
break;
case opt_part:
if (match_int(&args[0], &sbi->part)) {
printk(KERN_ERR "hfs: part requires an argument\n");
return 0;
}
break;
case opt_session:
if (match_int(&args[0], &sbi->session)) {
printk(KERN_ERR "hfs: session requires an argument\n");
return 0;
}
break;
case opt_nls:
if (sbi->nls) {
printk(KERN_ERR "hfs: unable to change nls mapping\n");
return 0;
}
p = match_strdup(&args[0]);
if (p)
sbi->nls = load_nls(p);
if (!sbi->nls) {
printk(KERN_ERR "hfs: unable to load "
"nls mapping \"%s\"\n",
p);
kfree(p);
return 0;
}
kfree(p);
break;
case opt_decompose:
clear_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags);
break;
case opt_nodecompose:
set_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags);
break;
case opt_barrier:
clear_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags);
break;
case opt_nobarrier:
set_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags);
break;
case opt_force:
set_bit(HFSPLUS_SB_FORCE, &sbi->flags);
break;
default:
return 0;
}
}
done:
if (!sbi->nls) {
/* */
sbi->nls = load_nls("utf8");
if (!sbi->nls)
sbi->nls = load_nls_default();
if (!sbi->nls)
return 0;
}
return 1;
}
static ssize_t iblock_set_configfs_dev_params(struct se_device *dev,
const char *page, ssize_t count)
{
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
char *orig, *ptr, *arg_p, *opts;
substring_t args[MAX_OPT_ARGS];
int ret = 0, token;
unsigned long tmp_readonly;
opts = kstrdup(page, GFP_KERNEL);
if (!opts)
return -ENOMEM;
orig = opts;
while ((ptr = strsep(&opts, ",\n")) != NULL) {
if (!*ptr)
continue;
token = match_token(ptr, tokens, args);
switch (token) {
case Opt_udev_path:
if (ib_dev->ibd_bd) {
pr_err("Unable to set udev_path= while"
" ib_dev->ibd_bd exists\n");
ret = -EEXIST;
goto out;
}
if (match_strlcpy(ib_dev->ibd_udev_path, &args[0],
SE_UDEV_PATH_LEN) == 0) {
ret = -EINVAL;
break;
}
pr_debug("IBLOCK: Referencing UDEV path: %s\n",
ib_dev->ibd_udev_path);
ib_dev->ibd_flags |= IBDF_HAS_UDEV_PATH;
break;
case Opt_readonly:
arg_p = match_strdup(&args[0]);
if (!arg_p) {
ret = -ENOMEM;
break;
}
ret = strict_strtoul(arg_p, 0, &tmp_readonly);
kfree(arg_p);
if (ret < 0) {
pr_err("strict_strtoul() failed for"
" readonly=\n");
goto out;
}
ib_dev->ibd_readonly = tmp_readonly;
pr_debug("IBLOCK: readonly: %d\n", ib_dev->ibd_readonly);
break;
case Opt_force:
break;
default:
break;
}
}
out:
kfree(orig);
return (!ret) ? count : ret;
}
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
parse_options(char *options, struct befs_mount_options *opts)
{
char *p;
substring_t args[MAX_OPT_ARGS];
int option;
kuid_t uid;
kgid_t gid;
/* Initialize options */
opts->uid = GLOBAL_ROOT_UID;
opts->gid = GLOBAL_ROOT_GID;
opts->use_uid = 0;
opts->use_gid = 0;
opts->iocharset = NULL;
opts->debug = 0;
if (!options)
return 1;
while ((p = strsep(&options, ",")) != NULL) {
int token;
if (!*p)
continue;
token = match_token(p, befs_tokens, args);
switch (token) {
case Opt_uid:
if (match_int(&args[0], &option))
return 0;
uid = INVALID_UID;
if (option >= 0)
uid = make_kuid(current_user_ns(), option);
if (!uid_valid(uid)) {
pr_err("Invalid uid %d, "
"using default\n", option);
break;
}
opts->uid = uid;
opts->use_uid = 1;
break;
case Opt_gid:
if (match_int(&args[0], &option))
return 0;
gid = INVALID_GID;
if (option >= 0)
gid = make_kgid(current_user_ns(), option);
if (!gid_valid(gid)) {
pr_err("Invalid gid %d, "
"using default\n", option);
break;
}
opts->gid = gid;
opts->use_gid = 1;
break;
case Opt_charset:
kfree(opts->iocharset);
opts->iocharset = match_strdup(&args[0]);
if (!opts->iocharset) {
pr_err("allocation failure for "
"iocharset string\n");
return 0;
}
break;
case Opt_debug:
opts->debug = 1;
break;
default:
pr_err("Unrecognized mount option \"%s\" "
"or missing value\n", p);
return 0;
}
}
return 1;
}
/*
* This function fills in xfs_mount_t fields based on mount args.
* Note: the superblock has _not_ yet been read in.
*
* Note that this function leaks the various device name allocations on
* failure. The caller takes care of them.
*
* *sb is const because this is also used to test options on the remount
* path, and we don't want this to have any side effects at remount time.
* Today this function does not change *sb, but just to future-proof...
*/
STATIC int
xfs_parseargs(
struct xfs_mount *mp,
char *options)
{
const struct super_block *sb = mp->m_super;
char *p;
substring_t args[MAX_OPT_ARGS];
int dsunit = 0;
int dswidth = 0;
int iosize = 0;
__uint8_t iosizelog = 0;
/*
* set up the mount name first so all the errors will refer to the
* correct device.
*/
mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL);
if (!mp->m_fsname)
return -ENOMEM;
mp->m_fsname_len = strlen(mp->m_fsname) + 1;
/*
* Copy binary VFS mount flags we are interested in.
*/
if (sb->s_flags & MS_RDONLY)
mp->m_flags |= XFS_MOUNT_RDONLY;
if (sb->s_flags & MS_DIRSYNC)
mp->m_flags |= XFS_MOUNT_DIRSYNC;
if (sb->s_flags & MS_SYNCHRONOUS)
mp->m_flags |= XFS_MOUNT_WSYNC;
/*
* Set some default flags that could be cleared by the mount option
* parsing.
*/
mp->m_flags |= XFS_MOUNT_BARRIER;
mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
/*
* These can be overridden by the mount option parsing.
*/
mp->m_logbufs = -1;
mp->m_logbsize = -1;
if (!options)
goto done;
while ((p = strsep(&options, ",")) != NULL) {
int token;
if (!*p)
continue;
token = match_token(p, tokens, args);
switch (token) {
case Opt_logbufs:
if (match_int(args, &mp->m_logbufs))
return -EINVAL;
break;
case Opt_logbsize:
if (suffix_kstrtoint(args, 10, &mp->m_logbsize))
return -EINVAL;
break;
case Opt_logdev:
mp->m_logname = match_strdup(args);
if (!mp->m_logname)
return -ENOMEM;
break;
case Opt_mtpt:
xfs_warn(mp, "%s option not allowed on this system", p);
return -EINVAL;
case Opt_rtdev:
mp->m_rtname = match_strdup(args);
if (!mp->m_rtname)
return -ENOMEM;
break;
case Opt_allocsize:
case Opt_biosize:
if (suffix_kstrtoint(args, 10, &iosize))
return -EINVAL;
iosizelog = ffs(iosize) - 1;
break;
case Opt_grpid:
case Opt_bsdgroups:
mp->m_flags |= XFS_MOUNT_GRPID;
break;
case Opt_nogrpid:
case Opt_sysvgroups:
mp->m_flags &= ~XFS_MOUNT_GRPID;
break;
case Opt_wsync:
mp->m_flags |= XFS_MOUNT_WSYNC;
break;
case Opt_norecovery:
mp->m_flags |= XFS_MOUNT_NORECOVERY;
break;
case Opt_noalign:
mp->m_flags |= XFS_MOUNT_NOALIGN;
break;
case Opt_swalloc:
mp->m_flags |= XFS_MOUNT_SWALLOC;
break;
case Opt_sunit:
if (match_int(args, &dsunit))
return -EINVAL;
break;
case Opt_swidth:
if (match_int(args, &dswidth))
return -EINVAL;
break;
case Opt_inode32:
mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
break;
case Opt_inode64:
mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
break;
case Opt_nouuid:
mp->m_flags |= XFS_MOUNT_NOUUID;
break;
case Opt_barrier:
mp->m_flags |= XFS_MOUNT_BARRIER;
break;
case Opt_nobarrier:
mp->m_flags &= ~XFS_MOUNT_BARRIER;
break;
case Opt_ikeep:
mp->m_flags |= XFS_MOUNT_IKEEP;
break;
case Opt_noikeep:
mp->m_flags &= ~XFS_MOUNT_IKEEP;
break;
case Opt_largeio:
mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE;
break;
case Opt_nolargeio:
mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
break;
case Opt_attr2:
mp->m_flags |= XFS_MOUNT_ATTR2;
break;
case Opt_noattr2:
mp->m_flags &= ~XFS_MOUNT_ATTR2;
mp->m_flags |= XFS_MOUNT_NOATTR2;
break;
case Opt_filestreams:
mp->m_flags |= XFS_MOUNT_FILESTREAMS;
break;
case Opt_noquota:
mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT;
mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD;
mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE;
break;
case Opt_quota:
case Opt_uquota:
case Opt_usrquota:
mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE |
XFS_UQUOTA_ENFD);
break;
case Opt_qnoenforce:
case Opt_uqnoenforce:
mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
mp->m_qflags &= ~XFS_UQUOTA_ENFD;
break;
case Opt_pquota:
case Opt_prjquota:
mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE |
XFS_PQUOTA_ENFD);
break;
case Opt_pqnoenforce:
mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
mp->m_qflags &= ~XFS_PQUOTA_ENFD;
break;
case Opt_gquota:
case Opt_grpquota:
mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE |
XFS_GQUOTA_ENFD);
break;
case Opt_gqnoenforce:
mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
mp->m_qflags &= ~XFS_GQUOTA_ENFD;
break;
case Opt_discard:
mp->m_flags |= XFS_MOUNT_DISCARD;
break;
case Opt_nodiscard:
mp->m_flags &= ~XFS_MOUNT_DISCARD;
break;
#ifdef CONFIG_FS_DAX
case Opt_dax:
mp->m_flags |= XFS_MOUNT_DAX;
break;
#endif
default:
xfs_warn(mp, "unknown mount option [%s].", p);
return -EINVAL;
}
}
/*
* no recovery flag requires a read-only mount
*/
if ((mp->m_flags & XFS_MOUNT_NORECOVERY) &&
!(mp->m_flags & XFS_MOUNT_RDONLY)) {
xfs_warn(mp, "no-recovery mounts must be read-only.");
return -EINVAL;
}
if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) {
xfs_warn(mp,
"sunit and swidth options incompatible with the noalign option");
return -EINVAL;
}
#ifndef CONFIG_XFS_QUOTA
if (XFS_IS_QUOTA_RUNNING(mp)) {
xfs_warn(mp, "quota support not available in this kernel.");
return -EINVAL;
}
#endif
if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
xfs_warn(mp, "sunit and swidth must be specified together");
return -EINVAL;
}
if (dsunit && (dswidth % dsunit != 0)) {
xfs_warn(mp,
"stripe width (%d) must be a multiple of the stripe unit (%d)",
dswidth, dsunit);
return -EINVAL;
}
done:
if (dsunit && !(mp->m_flags & XFS_MOUNT_NOALIGN)) {
/*
* At this point the superblock has not been read
* in, therefore we do not know the block size.
* Before the mount call ends we will convert
* these to FSBs.
*/
mp->m_dalign = dsunit;
mp->m_swidth = dswidth;
}
if (mp->m_logbufs != -1 &&
mp->m_logbufs != 0 &&
(mp->m_logbufs < XLOG_MIN_ICLOGS ||
mp->m_logbufs > XLOG_MAX_ICLOGS)) {
xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]",
mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
return -EINVAL;
}
if (mp->m_logbsize != -1 &&
mp->m_logbsize != 0 &&
(mp->m_logbsize < XLOG_MIN_RECORD_BSIZE ||
mp->m_logbsize > XLOG_MAX_RECORD_BSIZE ||
!is_power_of_2(mp->m_logbsize))) {
xfs_warn(mp,
"invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
mp->m_logbsize);
return -EINVAL;
}
if (iosizelog) {
if (iosizelog > XFS_MAX_IO_LOG ||
iosizelog < XFS_MIN_IO_LOG) {
xfs_warn(mp, "invalid log iosize: %d [not %d-%d]",
iosizelog, XFS_MIN_IO_LOG,
XFS_MAX_IO_LOG);
return -EINVAL;
}
mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE;
mp->m_readio_log = iosizelog;
mp->m_writeio_log = iosizelog;
}
return 0;
}
