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super.c
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// SPDX-License-Identifier: GPL-2.0
/*
* fs/f2fs/super.c
*
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/statfs.h>
#include <linux/buffer_head.h>
#include <linux/backing-dev.h>
#include <linux/kthread.h>
#include <linux/parser.h>
#include <linux/mount.h>
#include <linux/seq_file.h>
#include <linux/proc_fs.h>
#include <linux/random.h>
#include <linux/exportfs.h>
#include <linux/blkdev.h>
#include <linux/quotaops.h>
#include <linux/f2fs_fs.h>
#include <linux/sysfs.h>
#include <linux/quota.h>
#include <linux/unicode.h>
#include <linux/part_stat.h>
#include "f2fs.h"
#include "node.h"
#include "segment.h"
#include "xattr.h"
#include "gc.h"
#include "trace.h"
#define CREATE_TRACE_POINTS
#include <trace/events/f2fs.h>
static struct kmem_cache *f2fs_inode_cachep;
#ifdef CONFIG_F2FS_FAULT_INJECTION
const char *f2fs_fault_name[FAULT_MAX] = {
[FAULT_KMALLOC] = "kmalloc",
[FAULT_KVMALLOC] = "kvmalloc",
[FAULT_PAGE_ALLOC] = "page alloc",
[FAULT_PAGE_GET] = "page get",
[FAULT_ALLOC_BIO] = "alloc bio",
[FAULT_ALLOC_NID] = "alloc nid",
[FAULT_ORPHAN] = "orphan",
[FAULT_BLOCK] = "no more block",
[FAULT_DIR_DEPTH] = "too big dir depth",
[FAULT_EVICT_INODE] = "evict_inode fail",
[FAULT_TRUNCATE] = "truncate fail",
[FAULT_READ_IO] = "read IO error",
[FAULT_CHECKPOINT] = "checkpoint error",
[FAULT_DISCARD] = "discard error",
[FAULT_WRITE_IO] = "write IO error",
};
void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
unsigned int type)
{
struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
if (rate) {
atomic_set(&ffi->inject_ops, 0);
ffi->inject_rate = rate;
}
if (type)
ffi->inject_type = type;
if (!rate && !type)
memset(ffi, 0, sizeof(struct f2fs_fault_info));
}
#endif
/* f2fs-wide shrinker description */
static struct shrinker f2fs_shrinker_info = {
.scan_objects = f2fs_shrink_scan,
.count_objects = f2fs_shrink_count,
.seeks = DEFAULT_SEEKS,
};
enum {
Opt_gc_background,
Opt_disable_roll_forward,
Opt_norecovery,
Opt_discard,
Opt_nodiscard,
Opt_noheap,
Opt_heap,
Opt_user_xattr,
Opt_nouser_xattr,
Opt_acl,
Opt_noacl,
Opt_active_logs,
Opt_disable_ext_identify,
Opt_inline_xattr,
Opt_noinline_xattr,
Opt_inline_xattr_size,
Opt_inline_data,
Opt_inline_dentry,
Opt_noinline_dentry,
Opt_flush_merge,
Opt_noflush_merge,
Opt_nobarrier,
Opt_fastboot,
Opt_extent_cache,
Opt_noextent_cache,
Opt_noinline_data,
Opt_data_flush,
Opt_reserve_root,
Opt_resgid,
Opt_resuid,
Opt_mode,
Opt_io_size_bits,
Opt_fault_injection,
Opt_fault_type,
Opt_lazytime,
Opt_nolazytime,
Opt_quota,
Opt_noquota,
Opt_usrquota,
Opt_grpquota,
Opt_prjquota,
Opt_usrjquota,
Opt_grpjquota,
Opt_prjjquota,
Opt_offusrjquota,
Opt_offgrpjquota,
Opt_offprjjquota,
Opt_jqfmt_vfsold,
Opt_jqfmt_vfsv0,
Opt_jqfmt_vfsv1,
Opt_whint,
Opt_alloc,
Opt_fsync,
Opt_test_dummy_encryption,
Opt_inlinecrypt,
Opt_checkpoint_disable,
Opt_checkpoint_disable_cap,
Opt_checkpoint_disable_cap_perc,
Opt_checkpoint_enable,
Opt_compress_algorithm,
Opt_compress_log_size,
Opt_compress_extension,
Opt_err,
};
static match_table_t f2fs_tokens = {
{Opt_gc_background, "background_gc=%s"},
{Opt_disable_roll_forward, "disable_roll_forward"},
{Opt_norecovery, "norecovery"},
{Opt_discard, "discard"},
{Opt_nodiscard, "nodiscard"},
{Opt_noheap, "no_heap"},
{Opt_heap, "heap"},
{Opt_user_xattr, "user_xattr"},
{Opt_nouser_xattr, "nouser_xattr"},
{Opt_acl, "acl"},
{Opt_noacl, "noacl"},
{Opt_active_logs, "active_logs=%u"},
{Opt_disable_ext_identify, "disable_ext_identify"},
{Opt_inline_xattr, "inline_xattr"},
{Opt_noinline_xattr, "noinline_xattr"},
{Opt_inline_xattr_size, "inline_xattr_size=%u"},
{Opt_inline_data, "inline_data"},
{Opt_inline_dentry, "inline_dentry"},
{Opt_noinline_dentry, "noinline_dentry"},
{Opt_flush_merge, "flush_merge"},
{Opt_noflush_merge, "noflush_merge"},
{Opt_nobarrier, "nobarrier"},
{Opt_fastboot, "fastboot"},
{Opt_extent_cache, "extent_cache"},
{Opt_noextent_cache, "noextent_cache"},
{Opt_noinline_data, "noinline_data"},
{Opt_data_flush, "data_flush"},
{Opt_reserve_root, "reserve_root=%u"},
{Opt_resgid, "resgid=%u"},
{Opt_resuid, "resuid=%u"},
{Opt_mode, "mode=%s"},
{Opt_io_size_bits, "io_bits=%u"},
{Opt_fault_injection, "fault_injection=%u"},
{Opt_fault_type, "fault_type=%u"},
{Opt_lazytime, "lazytime"},
{Opt_nolazytime, "nolazytime"},
{Opt_quota, "quota"},
{Opt_noquota, "noquota"},
{Opt_usrquota, "usrquota"},
{Opt_grpquota, "grpquota"},
{Opt_prjquota, "prjquota"},
{Opt_usrjquota, "usrjquota=%s"},
{Opt_grpjquota, "grpjquota=%s"},
{Opt_prjjquota, "prjjquota=%s"},
{Opt_offusrjquota, "usrjquota="},
{Opt_offgrpjquota, "grpjquota="},
{Opt_offprjjquota, "prjjquota="},
{Opt_jqfmt_vfsold, "jqfmt=vfsold"},
{Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
{Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
{Opt_whint, "whint_mode=%s"},
{Opt_alloc, "alloc_mode=%s"},
{Opt_fsync, "fsync_mode=%s"},
{Opt_test_dummy_encryption, "test_dummy_encryption=%s"},
{Opt_test_dummy_encryption, "test_dummy_encryption"},
{Opt_inlinecrypt, "inlinecrypt"},
{Opt_checkpoint_disable, "checkpoint=disable"},
{Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
{Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
{Opt_checkpoint_enable, "checkpoint=enable"},
{Opt_compress_algorithm, "compress_algorithm=%s"},
{Opt_compress_log_size, "compress_log_size=%u"},
{Opt_compress_extension, "compress_extension=%s"},
{Opt_err, NULL},
};
void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
{
struct va_format vaf;
va_list args;
int level;
va_start(args, fmt);
level = printk_get_level(fmt);
vaf.fmt = printk_skip_level(fmt);
vaf.va = &args;
printk("%c%cF2FS-fs (%s): %pV\n",
KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
va_end(args);
}
#ifdef CONFIG_UNICODE
static const struct f2fs_sb_encodings {
__u16 magic;
char *name;
char *version;
} f2fs_sb_encoding_map[] = {
{F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
};
static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
const struct f2fs_sb_encodings **encoding,
__u16 *flags)
{
__u16 magic = le16_to_cpu(sb->s_encoding);
int i;
for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
if (magic == f2fs_sb_encoding_map[i].magic)
break;
if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
return -EINVAL;
*encoding = &f2fs_sb_encoding_map[i];
*flags = le16_to_cpu(sb->s_encoding_flags);
return 0;
}
#endif
static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
{
block_t limit = min((sbi->user_block_count << 1) / 1000,
sbi->user_block_count - sbi->reserved_blocks);
/* limit is 0.2% */
if (test_opt(sbi, RESERVE_ROOT) &&
F2FS_OPTION(sbi).root_reserved_blocks > limit) {
F2FS_OPTION(sbi).root_reserved_blocks = limit;
f2fs_info(sbi, "Reduce reserved blocks for root = %u",
F2FS_OPTION(sbi).root_reserved_blocks);
}
if (!test_opt(sbi, RESERVE_ROOT) &&
(!uid_eq(F2FS_OPTION(sbi).s_resuid,
make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
!gid_eq(F2FS_OPTION(sbi).s_resgid,
make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
from_kuid_munged(&init_user_ns,
F2FS_OPTION(sbi).s_resuid),
from_kgid_munged(&init_user_ns,
F2FS_OPTION(sbi).s_resgid));
}
static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi)
{
if (!F2FS_OPTION(sbi).unusable_cap_perc)
return;
if (F2FS_OPTION(sbi).unusable_cap_perc == 100)
F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count;
else
F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) *
F2FS_OPTION(sbi).unusable_cap_perc;
f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%",
F2FS_OPTION(sbi).unusable_cap,
F2FS_OPTION(sbi).unusable_cap_perc);
}
static void init_once(void *foo)
{
struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
inode_init_once(&fi->vfs_inode);
}
#ifdef CONFIG_QUOTA
static const char * const quotatypes[] = INITQFNAMES;
#define QTYPE2NAME(t) (quotatypes[t])
static int f2fs_set_qf_name(struct super_block *sb, int qtype,
substring_t *args)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
char *qname;
int ret = -EINVAL;
if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
return -EINVAL;
}
if (f2fs_sb_has_quota_ino(sbi)) {
f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
return 0;
}
qname = match_strdup(args);
if (!qname) {
f2fs_err(sbi, "Not enough memory for storing quotafile name");
return -ENOMEM;
}
if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
ret = 0;
else
f2fs_err(sbi, "%s quota file already specified",
QTYPE2NAME(qtype));
goto errout;
}
if (strchr(qname, '/')) {
f2fs_err(sbi, "quotafile must be on filesystem root");
goto errout;
}
F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
set_opt(sbi, QUOTA);
return 0;
errout:
kvfree(qname);
return ret;
}
static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
return -EINVAL;
}
kvfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
return 0;
}
static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
{
/*
* We do the test below only for project quotas. 'usrquota' and
* 'grpquota' mount options are allowed even without quota feature
* to support legacy quotas in quota files.
*/
if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
return -1;
}
if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
if (test_opt(sbi, USRQUOTA) &&
F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
clear_opt(sbi, USRQUOTA);
if (test_opt(sbi, GRPQUOTA) &&
F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
clear_opt(sbi, GRPQUOTA);
if (test_opt(sbi, PRJQUOTA) &&
F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
clear_opt(sbi, PRJQUOTA);
if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
test_opt(sbi, PRJQUOTA)) {
f2fs_err(sbi, "old and new quota format mixing");
return -1;
}
if (!F2FS_OPTION(sbi).s_jquota_fmt) {
f2fs_err(sbi, "journaled quota format not specified");
return -1;
}
}
if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
F2FS_OPTION(sbi).s_jquota_fmt = 0;
}
return 0;
}
#endif
static int f2fs_set_test_dummy_encryption(struct super_block *sb,
const char *opt,
const substring_t *arg,
bool is_remount)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
#ifdef CONFIG_FS_ENCRYPTION
int err;
if (!f2fs_sb_has_encrypt(sbi)) {
f2fs_err(sbi, "Encrypt feature is off");
return -EINVAL;
}
/*
* This mount option is just for testing, and it's not worthwhile to
* implement the extra complexity (e.g. RCU protection) that would be
* needed to allow it to be set or changed during remount. We do allow
* it to be specified during remount, but only if there is no change.
*/
if (is_remount && !F2FS_OPTION(sbi).dummy_enc_ctx.ctx) {
f2fs_warn(sbi, "Can't set test_dummy_encryption on remount");
return -EINVAL;
}
err = fscrypt_set_test_dummy_encryption(
sb, arg, &F2FS_OPTION(sbi).dummy_enc_ctx);
if (err) {
if (err == -EEXIST)
f2fs_warn(sbi,
"Can't change test_dummy_encryption on remount");
else if (err == -EINVAL)
f2fs_warn(sbi, "Value of option \"%s\" is unrecognized",
opt);
else
f2fs_warn(sbi, "Error processing option \"%s\" [%d]",
opt, err);
return -EINVAL;
}
f2fs_warn(sbi, "Test dummy encryption mode enabled");
#else
f2fs_warn(sbi, "Test dummy encryption mount option ignored");
#endif
return 0;
}
static int parse_options(struct super_block *sb, char *options, bool is_remount)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
substring_t args[MAX_OPT_ARGS];
unsigned char (*ext)[F2FS_EXTENSION_LEN];
char *p, *name;
int arg = 0, ext_cnt;
kuid_t uid;
kgid_t gid;
int ret;
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 (!strcmp(name, "on")) {
F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
} else if (!strcmp(name, "off")) {
F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF;
} else if (!strcmp(name, "sync")) {
F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC;
} else {
kvfree(name);
return -EINVAL;
}
kvfree(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, NORECOVERY);
if (!f2fs_readonly(sb))
return -EINVAL;
break;
case Opt_discard:
set_opt(sbi, DISCARD);
break;
case Opt_nodiscard:
if (f2fs_sb_has_blkzoned(sbi)) {
f2fs_warn(sbi, "discard is required for zoned block devices");
return -EINVAL;
}
clear_opt(sbi, DISCARD);
break;
case Opt_noheap:
set_opt(sbi, NOHEAP);
break;
case Opt_heap:
clear_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;
case Opt_noinline_xattr:
clear_opt(sbi, INLINE_XATTR);
break;
case Opt_inline_xattr_size:
if (args->from && match_int(args, &arg))
return -EINVAL;
set_opt(sbi, INLINE_XATTR_SIZE);
F2FS_OPTION(sbi).inline_xattr_size = arg;
break;
#else
case Opt_user_xattr:
f2fs_info(sbi, "user_xattr options not supported");
break;
case Opt_nouser_xattr:
f2fs_info(sbi, "nouser_xattr options not supported");
break;
case Opt_inline_xattr:
f2fs_info(sbi, "inline_xattr options not supported");
break;
case Opt_noinline_xattr:
f2fs_info(sbi, "noinline_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_info(sbi, "acl options not supported");
break;
case Opt_noacl:
f2fs_info(sbi, "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;
F2FS_OPTION(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_noinline_dentry:
clear_opt(sbi, INLINE_DENTRY);
break;
case Opt_flush_merge:
set_opt(sbi, FLUSH_MERGE);
break;
case Opt_noflush_merge:
clear_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_noextent_cache:
clear_opt(sbi, EXTENT_CACHE);
break;
case Opt_noinline_data:
clear_opt(sbi, INLINE_DATA);
break;
case Opt_data_flush:
set_opt(sbi, DATA_FLUSH);
break;
case Opt_reserve_root:
if (args->from && match_int(args, &arg))
return -EINVAL;
if (test_opt(sbi, RESERVE_ROOT)) {
f2fs_info(sbi, "Preserve previous reserve_root=%u",
F2FS_OPTION(sbi).root_reserved_blocks);
} else {
F2FS_OPTION(sbi).root_reserved_blocks = arg;
set_opt(sbi, RESERVE_ROOT);
}
break;
case Opt_resuid:
if (args->from && match_int(args, &arg))
return -EINVAL;
uid = make_kuid(current_user_ns(), arg);
if (!uid_valid(uid)) {
f2fs_err(sbi, "Invalid uid value %d", arg);
return -EINVAL;
}
F2FS_OPTION(sbi).s_resuid = uid;
break;
case Opt_resgid:
if (args->from && match_int(args, &arg))
return -EINVAL;
gid = make_kgid(current_user_ns(), arg);
if (!gid_valid(gid)) {
f2fs_err(sbi, "Invalid gid value %d", arg);
return -EINVAL;
}
F2FS_OPTION(sbi).s_resgid = gid;
break;
case Opt_mode:
name = match_strdup(&args[0]);
if (!name)
return -ENOMEM;
if (!strcmp(name, "adaptive")) {
if (f2fs_sb_has_blkzoned(sbi)) {
f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
kvfree(name);
return -EINVAL;
}
F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
} else if (!strcmp(name, "lfs")) {
F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
} else {
kvfree(name);
return -EINVAL;
}
kvfree(name);
break;
case Opt_io_size_bits:
if (args->from && match_int(args, &arg))
return -EINVAL;
if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_PAGES)) {
f2fs_warn(sbi, "Not support %d, larger than %d",
1 << arg, BIO_MAX_PAGES);
return -EINVAL;
}
F2FS_OPTION(sbi).write_io_size_bits = arg;
break;
#ifdef CONFIG_F2FS_FAULT_INJECTION
case Opt_fault_injection:
if (args->from && match_int(args, &arg))
return -EINVAL;
f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
set_opt(sbi, FAULT_INJECTION);
break;
case Opt_fault_type:
if (args->from && match_int(args, &arg))
return -EINVAL;
f2fs_build_fault_attr(sbi, 0, arg);
set_opt(sbi, FAULT_INJECTION);
break;
#else
case Opt_fault_injection:
f2fs_info(sbi, "fault_injection options not supported");
break;
case Opt_fault_type:
f2fs_info(sbi, "fault_type options not supported");
break;
#endif
case Opt_lazytime:
sb->s_flags |= SB_LAZYTIME;
break;
case Opt_nolazytime:
sb->s_flags &= ~SB_LAZYTIME;
break;
#ifdef CONFIG_QUOTA
case Opt_quota:
case Opt_usrquota:
set_opt(sbi, USRQUOTA);
break;
case Opt_grpquota:
set_opt(sbi, GRPQUOTA);
break;
case Opt_prjquota:
set_opt(sbi, PRJQUOTA);
break;
case Opt_usrjquota:
ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
if (ret)
return ret;
break;
case Opt_grpjquota:
ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
if (ret)
return ret;
break;
case Opt_prjjquota:
ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
if (ret)
return ret;
break;
case Opt_offusrjquota:
ret = f2fs_clear_qf_name(sb, USRQUOTA);
if (ret)
return ret;
break;
case Opt_offgrpjquota:
ret = f2fs_clear_qf_name(sb, GRPQUOTA);
if (ret)
return ret;
break;
case Opt_offprjjquota:
ret = f2fs_clear_qf_name(sb, PRJQUOTA);
if (ret)
return ret;
break;
case Opt_jqfmt_vfsold:
F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
break;
case Opt_jqfmt_vfsv0:
F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
break;
case Opt_jqfmt_vfsv1:
F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
break;
case Opt_noquota:
clear_opt(sbi, QUOTA);
clear_opt(sbi, USRQUOTA);
clear_opt(sbi, GRPQUOTA);
clear_opt(sbi, PRJQUOTA);
break;
#else
case Opt_quota:
case Opt_usrquota:
case Opt_grpquota:
case Opt_prjquota:
case Opt_usrjquota:
case Opt_grpjquota:
case Opt_prjjquota:
case Opt_offusrjquota:
case Opt_offgrpjquota:
case Opt_offprjjquota:
case Opt_jqfmt_vfsold:
case Opt_jqfmt_vfsv0:
case Opt_jqfmt_vfsv1:
case Opt_noquota:
f2fs_info(sbi, "quota operations not supported");
break;
#endif
case Opt_whint:
name = match_strdup(&args[0]);
if (!name)
return -ENOMEM;
if (!strcmp(name, "user-based")) {
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
} else if (!strcmp(name, "off")) {
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
} else if (!strcmp(name, "fs-based")) {
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
} else {
kvfree(name);
return -EINVAL;
}
kvfree(name);
break;
case Opt_alloc:
name = match_strdup(&args[0]);
if (!name)
return -ENOMEM;
if (!strcmp(name, "default")) {
F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
} else if (!strcmp(name, "reuse")) {
F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
} else {
kvfree(name);
return -EINVAL;
}
kvfree(name);
break;
case Opt_fsync:
name = match_strdup(&args[0]);
if (!name)
return -ENOMEM;
if (!strcmp(name, "posix")) {
F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
} else if (!strcmp(name, "strict")) {
F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
} else if (!strcmp(name, "nobarrier")) {
F2FS_OPTION(sbi).fsync_mode =
FSYNC_MODE_NOBARRIER;
} else {
kvfree(name);
return -EINVAL;
}
kvfree(name);
break;
case Opt_test_dummy_encryption:
ret = f2fs_set_test_dummy_encryption(sb, p, &args[0],
is_remount);
if (ret)
return ret;
break;
case Opt_inlinecrypt:
#ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
sb->s_flags |= SB_INLINECRYPT;
#else
f2fs_info(sbi, "inline encryption not supported");
#endif
break;
case Opt_checkpoint_disable_cap_perc:
if (args->from && match_int(args, &arg))
return -EINVAL;
if (arg < 0 || arg > 100)
return -EINVAL;
F2FS_OPTION(sbi).unusable_cap_perc = arg;
set_opt(sbi, DISABLE_CHECKPOINT);
break;
case Opt_checkpoint_disable_cap:
if (args->from && match_int(args, &arg))
return -EINVAL;
F2FS_OPTION(sbi).unusable_cap = arg;
set_opt(sbi, DISABLE_CHECKPOINT);
break;
case Opt_checkpoint_disable:
set_opt(sbi, DISABLE_CHECKPOINT);
break;
case Opt_checkpoint_enable:
clear_opt(sbi, DISABLE_CHECKPOINT);
break;
case Opt_compress_algorithm:
if (!f2fs_sb_has_compression(sbi)) {
f2fs_err(sbi, "Compression feature if off");
return -EINVAL;
}
name = match_strdup(&args[0]);
if (!name)
return -ENOMEM;
if (!strcmp(name, "lzo")) {
F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_LZO;
} else if (!strcmp(name, "lz4")) {
F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_LZ4;
} else if (!strcmp(name, "zstd")) {
F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_ZSTD;
} else if (!strcmp(name, "lzo-rle")) {
F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_LZORLE;
} else {
kfree(name);
return -EINVAL;
}
kfree(name);
break;
case Opt_compress_log_size:
if (!f2fs_sb_has_compression(sbi)) {
f2fs_err(sbi, "Compression feature is off");
return -EINVAL;
}
if (args->from && match_int(args, &arg))
return -EINVAL;
if (arg < MIN_COMPRESS_LOG_SIZE ||
arg > MAX_COMPRESS_LOG_SIZE) {
f2fs_err(sbi,
"Compress cluster log size is out of range");
return -EINVAL;
}
F2FS_OPTION(sbi).compress_log_size = arg;
break;
case Opt_compress_extension:
if (!f2fs_sb_has_compression(sbi)) {
f2fs_err(sbi, "Compression feature is off");
return -EINVAL;
}
name = match_strdup(&args[0]);
if (!name)
return -ENOMEM;
ext = F2FS_OPTION(sbi).extensions;
ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
if (strlen(name) >= F2FS_EXTENSION_LEN ||
ext_cnt >= COMPRESS_EXT_NUM) {
f2fs_err(sbi,
"invalid extension length/number");
kfree(name);
return -EINVAL;
}
strcpy(ext[ext_cnt], name);
F2FS_OPTION(sbi).compress_ext_cnt++;
kfree(name);
break;
default:
f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
p);
return -EINVAL;
}
}
#ifdef CONFIG_QUOTA
if (f2fs_check_quota_options(sbi))
return -EINVAL;
#else
if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
return -EINVAL;
}
if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
return -EINVAL;
}
#endif
#ifndef CONFIG_UNICODE
if (f2fs_sb_has_casefold(sbi)) {
f2fs_err(sbi,
"Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
return -EINVAL;
}
#endif
if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
F2FS_IO_SIZE_KB(sbi));
return -EINVAL;
}
if (test_opt(sbi, INLINE_XATTR_SIZE)) {
int min_size, max_size;
if (!f2fs_sb_has_extra_attr(sbi) ||
!f2fs_sb_has_flexible_inline_xattr(sbi)) {
f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
return -EINVAL;
}
if (!test_opt(sbi, INLINE_XATTR)) {
f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
return -EINVAL;
}
min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
max_size = MAX_INLINE_XATTR_SIZE;
if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
F2FS_OPTION(sbi).inline_xattr_size > max_size) {
f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
min_size, max_size);
return -EINVAL;
}
}
if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
f2fs_err(sbi, "LFS not compatible with checkpoint=disable\n");
return -EINVAL;
}
/* Not pass down write hints if the number of active logs is lesser
* than NR_CURSEG_TYPE.
*/
if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
return 0;
}
static struct inode *f2fs_alloc_inode(struct super_block *sb)