Remove unused match_table_t, slim down mount_opts structure by removing
unnecessary definitions, remove redundant MOPT_ flags and clean up
ext4_parse_param() by converting the most of the if/else branching to
switch except for the MOPT_SET/MOPT_CEAR handling.
Signed-off-by: Lukas Czerner <lczerner@xxxxxxxxxx>
---
fs/ext4/super.c | 374 +++++++++++++++++-------------------------------
1 file changed, 131 insertions(+), 243 deletions(-)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 16d434a512d8..c4674e943905 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1682,7 +1682,7 @@ static const struct export_operations ext4_export_ops = {
enum {
Opt_bsd_df, Opt_minix_df, Opt_grpid, Opt_nogrpid,
- Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic, Opt_err_ro,
+ Opt_resgid, Opt_resuid, Opt_sb,
Opt_nouid32, Opt_debug, Opt_removed,
Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl,
Opt_auto_da_alloc, Opt_noauto_da_alloc, Opt_noload,
@@ -1691,8 +1691,7 @@ enum {
Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
Opt_data_err_abort, Opt_data_err_ignore, Opt_test_dummy_encryption,
Opt_inlinecrypt,
- Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
- Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
+ Opt_usrjquota, Opt_grpjquota, Opt_quota,
Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err,
Opt_usrquota, Opt_grpquota, Opt_prjquota, Opt_i_version,
Opt_dax, Opt_dax_always, Opt_dax_inode, Opt_dax_never,
@@ -1712,16 +1711,16 @@ enum {
};
static const struct constant_table ext4_param_errors[] = {
- {"continue", Opt_err_cont},
- {"panic", Opt_err_panic},
- {"remount-ro", Opt_err_ro},
+ {"continue", EXT4_MOUNT_ERRORS_CONT},
+ {"panic", EXT4_MOUNT_ERRORS_PANIC},
+ {"remount-ro", EXT4_MOUNT_ERRORS_RO},
{}
};
static const struct constant_table ext4_param_data[] = {
- {"journal", Opt_data_journal},
- {"ordered", Opt_data_ordered},
- {"writeback", Opt_data_writeback},
+ {"journal", EXT4_MOUNT_JOURNAL_DATA},
+ {"ordered", EXT4_MOUNT_ORDERED_DATA},
+ {"writeback", EXT4_MOUNT_WRITEBACK_DATA},
{}
};
@@ -1732,9 +1731,9 @@ static const struct constant_table ext4_param_data_err[] = {
};
static const struct constant_table ext4_param_jqfmt[] = {
- {"vfsold", Opt_jqfmt_vfsold},
- {"vfsv0", Opt_jqfmt_vfsv0},
- {"vfsv1", Opt_jqfmt_vfsv1},
+ {"vfsold", QFMT_VFS_OLD},
+ {"vfsv0", QFMT_VFS_V0},
+ {"vfsv1", QFMT_VFS_V1},
{}
};
@@ -1859,111 +1858,6 @@ static const struct fs_parameter_spec ext4_param_specs[] = {
{}
};
-static const match_table_t tokens = {
- {Opt_bsd_df, "bsddf"},
- {Opt_minix_df, "minixdf"},
- {Opt_grpid, "grpid"},
- {Opt_grpid, "bsdgroups"},
- {Opt_nogrpid, "nogrpid"},
- {Opt_nogrpid, "sysvgroups"},
- {Opt_resgid, "resgid=%u"},
- {Opt_resuid, "resuid=%u"},
- {Opt_sb, "sb=%u"},
- {Opt_err_cont, "errors=continue"},
- {Opt_err_panic, "errors=panic"},
- {Opt_err_ro, "errors=remount-ro"},
- {Opt_nouid32, "nouid32"},
- {Opt_debug, "debug"},
- {Opt_removed, "oldalloc"},
- {Opt_removed, "orlov"},
- {Opt_user_xattr, "user_xattr"},
- {Opt_nouser_xattr, "nouser_xattr"},
- {Opt_acl, "acl"},
- {Opt_noacl, "noacl"},
- {Opt_noload, "norecovery"},
- {Opt_noload, "noload"},
- {Opt_removed, "nobh"},
- {Opt_removed, "bh"},
- {Opt_commit, "commit=%u"},
- {Opt_min_batch_time, "min_batch_time=%u"},
- {Opt_max_batch_time, "max_batch_time=%u"},
- {Opt_journal_dev, "journal_dev=%u"},
- {Opt_journal_path, "journal_path=%s"},
- {Opt_journal_checksum, "journal_checksum"},
- {Opt_nojournal_checksum, "nojournal_checksum"},
- {Opt_journal_async_commit, "journal_async_commit"},
- {Opt_abort, "abort"},
- {Opt_data_journal, "data=journal"},
- {Opt_data_ordered, "data=ordered"},
- {Opt_data_writeback, "data=writeback"},
- {Opt_data_err_abort, "data_err=abort"},
- {Opt_data_err_ignore, "data_err=ignore"},
- {Opt_offusrjquota, "usrjquota="},
- {Opt_usrjquota, "usrjquota=%s"},
- {Opt_offgrpjquota, "grpjquota="},
- {Opt_grpjquota, "grpjquota=%s"},
- {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
- {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
- {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
- {Opt_grpquota, "grpquota"},
- {Opt_noquota, "noquota"},
- {Opt_quota, "quota"},
- {Opt_usrquota, "usrquota"},
- {Opt_prjquota, "prjquota"},
- {Opt_barrier, "barrier=%u"},
- {Opt_barrier, "barrier"},
- {Opt_nobarrier, "nobarrier"},
- {Opt_i_version, "i_version"},
- {Opt_dax, "dax"},
- {Opt_dax_always, "dax=always"},
- {Opt_dax_inode, "dax=inode"},
- {Opt_dax_never, "dax=never"},
- {Opt_stripe, "stripe=%u"},
- {Opt_delalloc, "delalloc"},
- {Opt_warn_on_error, "warn_on_error"},
- {Opt_nowarn_on_error, "nowarn_on_error"},
- {Opt_lazytime, "lazytime"},
- {Opt_nolazytime, "nolazytime"},
- {Opt_debug_want_extra_isize, "debug_want_extra_isize=%u"},
- {Opt_nodelalloc, "nodelalloc"},
- {Opt_removed, "mblk_io_submit"},
- {Opt_removed, "nomblk_io_submit"},
- {Opt_block_validity, "block_validity"},
- {Opt_noblock_validity, "noblock_validity"},
- {Opt_inode_readahead_blks, "inode_readahead_blks=%u"},
- {Opt_journal_ioprio, "journal_ioprio=%u"},
- {Opt_auto_da_alloc, "auto_da_alloc=%u"},
- {Opt_auto_da_alloc, "auto_da_alloc"},
- {Opt_noauto_da_alloc, "noauto_da_alloc"},
- {Opt_dioread_nolock, "dioread_nolock"},
- {Opt_dioread_lock, "nodioread_nolock"},
- {Opt_dioread_lock, "dioread_lock"},
- {Opt_discard, "discard"},
- {Opt_nodiscard, "nodiscard"},
- {Opt_init_itable, "init_itable=%u"},
- {Opt_init_itable, "init_itable"},
- {Opt_noinit_itable, "noinit_itable"},
-#ifdef CONFIG_EXT4_DEBUG
- {Opt_fc_debug_force, "fc_debug_force"},
- {Opt_fc_debug_max_replay, "fc_debug_max_replay=%u"},
-#endif
- {Opt_max_dir_size_kb, "max_dir_size_kb=%u"},
- {Opt_test_dummy_encryption, "test_dummy_encryption=%s"},
- {Opt_test_dummy_encryption, "test_dummy_encryption"},
- {Opt_inlinecrypt, "inlinecrypt"},
- {Opt_nombcache, "nombcache"},
- {Opt_nombcache, "no_mbcache"}, /* for backward compatibility */
- {Opt_removed, "prefetch_block_bitmaps"},
- {Opt_no_prefetch_block_bitmaps, "no_prefetch_block_bitmaps"},
- {Opt_mb_optimize_scan, "mb_optimize_scan=%d"},
- {Opt_removed, "check=none"}, /* mount option from ext2/3 */
- {Opt_removed, "nocheck"}, /* mount option from ext2/3 */
- {Opt_removed, "reservation"}, /* mount option from ext2/3 */
- {Opt_removed, "noreservation"}, /* mount option from ext2/3 */
- {Opt_removed, "journal=%u"}, /* mount option from ext2/3 */
- {Opt_err, NULL},
-};
-
#define DEFAULT_JOURNAL_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3))
#define DEFAULT_MB_OPTIMIZE_SCAN (-1)
@@ -1975,22 +1869,18 @@ static const char deprecated_msg[] =
#define MOPT_CLEAR 0x0002
#define MOPT_NOSUPPORT 0x0004
#define MOPT_EXPLICIT 0x0008
-#define MOPT_CLEAR_ERR 0x0010
-#define MOPT_GTE0 0x0020
#ifdef CONFIG_QUOTA
#define MOPT_Q 0
-#define MOPT_QFMT 0x0040
+#define MOPT_QFMT 0x0010
#else
#define MOPT_Q MOPT_NOSUPPORT
#define MOPT_QFMT MOPT_NOSUPPORT
#endif
-#define MOPT_DATAJ 0x0080
-#define MOPT_NO_EXT2 0x0100
-#define MOPT_NO_EXT3 0x0200
+#define MOPT_NO_EXT2 0x0020
+#define MOPT_NO_EXT3 0x0040
#define MOPT_EXT4_ONLY (MOPT_NO_EXT2 | MOPT_NO_EXT3)
-#define MOPT_STRING 0x0400
-#define MOPT_SKIP 0x0800
-#define MOPT_2 0x1000
+#define MOPT_SKIP 0x0080
+#define MOPT_2 0x0100
static const struct mount_opts {
int token;
@@ -2023,40 +1913,17 @@ static const struct mount_opts {
EXT4_MOUNT_JOURNAL_CHECKSUM),
MOPT_EXT4_ONLY | MOPT_SET | MOPT_EXPLICIT},
{Opt_noload, EXT4_MOUNT_NOLOAD, MOPT_NO_EXT2 | MOPT_SET},
- {Opt_err_panic, EXT4_MOUNT_ERRORS_PANIC, MOPT_SET | MOPT_CLEAR_ERR},
- {Opt_err_ro, EXT4_MOUNT_ERRORS_RO, MOPT_SET | MOPT_CLEAR_ERR},
- {Opt_err_cont, EXT4_MOUNT_ERRORS_CONT, MOPT_SET | MOPT_CLEAR_ERR},
- {Opt_data_err_abort, EXT4_MOUNT_DATA_ERR_ABORT,
- MOPT_NO_EXT2},
- {Opt_data_err_ignore, EXT4_MOUNT_DATA_ERR_ABORT,
- MOPT_NO_EXT2},
+ {Opt_data_err, EXT4_MOUNT_DATA_ERR_ABORT, MOPT_NO_EXT2},
{Opt_barrier, EXT4_MOUNT_BARRIER, MOPT_SET},
{Opt_nobarrier, EXT4_MOUNT_BARRIER, MOPT_CLEAR},
{Opt_noauto_da_alloc, EXT4_MOUNT_NO_AUTO_DA_ALLOC, MOPT_SET},
{Opt_auto_da_alloc, EXT4_MOUNT_NO_AUTO_DA_ALLOC, MOPT_CLEAR},
{Opt_noinit_itable, EXT4_MOUNT_INIT_INODE_TABLE, MOPT_CLEAR},
- {Opt_commit, 0, MOPT_GTE0},
- {Opt_max_batch_time, 0, MOPT_GTE0},
- {Opt_min_batch_time, 0, MOPT_GTE0},
- {Opt_inode_readahead_blks, 0, MOPT_GTE0},
- {Opt_init_itable, 0, MOPT_GTE0},
- {Opt_dax, EXT4_MOUNT_DAX_ALWAYS, MOPT_SET | MOPT_SKIP},
- {Opt_dax_always, EXT4_MOUNT_DAX_ALWAYS,
- MOPT_EXT4_ONLY | MOPT_SET | MOPT_SKIP},
- {Opt_dax_inode, EXT4_MOUNT2_DAX_INODE,
- MOPT_EXT4_ONLY | MOPT_SET | MOPT_SKIP},
- {Opt_dax_never, EXT4_MOUNT2_DAX_NEVER,
- MOPT_EXT4_ONLY | MOPT_SET | MOPT_SKIP},
- {Opt_stripe, 0, MOPT_GTE0},
- {Opt_resuid, 0, MOPT_GTE0},
- {Opt_resgid, 0, MOPT_GTE0},
- {Opt_journal_dev, 0, MOPT_NO_EXT2 | MOPT_GTE0},
- {Opt_journal_path, 0, MOPT_NO_EXT2 | MOPT_STRING},
- {Opt_journal_ioprio, 0, MOPT_NO_EXT2 | MOPT_GTE0},
- {Opt_data_journal, EXT4_MOUNT_JOURNAL_DATA, MOPT_NO_EXT2 | MOPT_DATAJ},
- {Opt_data_ordered, EXT4_MOUNT_ORDERED_DATA, MOPT_NO_EXT2 | MOPT_DATAJ},
- {Opt_data_writeback, EXT4_MOUNT_WRITEBACK_DATA,
- MOPT_NO_EXT2 | MOPT_DATAJ},
+ {Opt_dax_type, 0, MOPT_EXT4_ONLY},
+ {Opt_journal_dev, 0, MOPT_NO_EXT2},
+ {Opt_journal_path, 0, MOPT_NO_EXT2},
+ {Opt_journal_ioprio, 0, MOPT_NO_EXT2},
+ {Opt_data, 0, MOPT_NO_EXT2},
{Opt_user_xattr, EXT4_MOUNT_XATTR_USER, MOPT_SET},
{Opt_nouser_xattr, EXT4_MOUNT_XATTR_USER, MOPT_CLEAR},
#ifdef CONFIG_EXT4_FS_POSIX_ACL
@@ -2068,7 +1935,6 @@ static const struct mount_opts {
#endif
{Opt_nouid32, EXT4_MOUNT_NO_UID32, MOPT_SET},
{Opt_debug, EXT4_MOUNT_DEBUG, MOPT_SET},
- {Opt_debug_want_extra_isize, 0, MOPT_GTE0},
{Opt_quota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA, MOPT_SET | MOPT_Q},
{Opt_usrquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA,
MOPT_SET | MOPT_Q},
@@ -2079,23 +1945,15 @@ static const struct mount_opts {
{Opt_noquota, (EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA |
EXT4_MOUNT_GRPQUOTA | EXT4_MOUNT_PRJQUOTA),
MOPT_CLEAR | MOPT_Q},
- {Opt_usrjquota, 0, MOPT_Q | MOPT_STRING},
- {Opt_grpjquota, 0, MOPT_Q | MOPT_STRING},
- {Opt_offusrjquota, 0, MOPT_Q},
- {Opt_offgrpjquota, 0, MOPT_Q},
- {Opt_jqfmt_vfsold, QFMT_VFS_OLD, MOPT_QFMT},
- {Opt_jqfmt_vfsv0, QFMT_VFS_V0, MOPT_QFMT},
- {Opt_jqfmt_vfsv1, QFMT_VFS_V1, MOPT_QFMT},
- {Opt_max_dir_size_kb, 0, MOPT_GTE0},
- {Opt_test_dummy_encryption, 0, MOPT_STRING},
+ {Opt_usrjquota, 0, MOPT_Q},
+ {Opt_grpjquota, 0, MOPT_Q},
+ {Opt_jqfmt, 0, MOPT_QFMT},
{Opt_nombcache, EXT4_MOUNT_NO_MBCACHE, MOPT_SET},
{Opt_no_prefetch_block_bitmaps, EXT4_MOUNT_NO_PREFETCH_BLOCK_BITMAPS,
MOPT_SET},
- {Opt_mb_optimize_scan, EXT4_MOUNT2_MB_OPTIMIZE_SCAN, MOPT_GTE0},
#ifdef CONFIG_EXT4_DEBUG
{Opt_fc_debug_force, EXT4_MOUNT2_JOURNAL_FAST_COMMIT,
MOPT_SET | MOPT_2 | MOPT_EXT4_ONLY},
- {Opt_fc_debug_max_replay, 0, MOPT_GTE0},
#endif
{Opt_err, 0, 0}
};
@@ -2324,20 +2182,41 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
return token;
is_remount = fc->purpose == FS_CONTEXT_FOR_RECONFIGURE;
+ for (m = ext4_mount_opts; m->token != Opt_err; m++)
+ if (token == m->token)
+ break;
+
+ ctx->opt_flags |= m->flags;
+
+ if (m->flags & MOPT_EXPLICIT) {
+ if (m->mount_opt & EXT4_MOUNT_DELALLOC) {
+ ctx_set_mount_opt2(ctx, EXT4_MOUNT2_EXPLICIT_DELALLOC);
+ } else if (m->mount_opt & EXT4_MOUNT_JOURNAL_CHECKSUM) {
+ ctx_set_mount_opt2(ctx,
+ EXT4_MOUNT2_EXPLICIT_JOURNAL_CHECKSUM);
+ } else
+ return -EINVAL;
+ }
+
+ if (m->flags & MOPT_NOSUPPORT) {
+ ext4_msg(NULL, KERN_ERR, "%s option not supported",
+ param->key);
+ return 0;
+ }
+
+ switch (token) {
#ifdef CONFIG_QUOTA
- if (token == Opt_usrjquota) {
+ case Opt_usrjquota:
if (!*param->string)
return unnote_qf_name(fc, USRQUOTA);
else
return note_qf_name(fc, USRQUOTA, param);
- } else if (token == Opt_grpjquota) {
+ case Opt_grpjquota:
if (!*param->string)
return unnote_qf_name(fc, GRPQUOTA);
else
return note_qf_name(fc, GRPQUOTA, param);
- }
#endif
- switch (token) {
case Opt_noacl:
case Opt_nouser_xattr:
ext4_msg(NULL, KERN_WARNING, deprecated_msg, param->key, "3.5");
@@ -2375,41 +2254,21 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
#endif
return 0;
case Opt_errors:
- case Opt_data:
- case Opt_data_err:
- case Opt_jqfmt:
- case Opt_dax_type:
- token = result.uint_32;
- }
-
- for (m = ext4_mount_opts; m->token != Opt_err; m++)
- if (token == m->token)
- break;
-
- ctx->opt_flags |= m->flags;
-
- if (m->token == Opt_err) {
- ext4_msg(NULL, KERN_ERR, "Unrecognized mount option \"%s\" "
- "or missing value", param->key);
- return -EINVAL;
- }
-
- if (m->flags & MOPT_EXPLICIT) {
- if (m->mount_opt & EXT4_MOUNT_DELALLOC) {
- ctx_set_mount_opt2(ctx, EXT4_MOUNT2_EXPLICIT_DELALLOC);
- } else if (m->mount_opt & EXT4_MOUNT_JOURNAL_CHECKSUM) {
- ctx_set_mount_opt2(ctx,
- EXT4_MOUNT2_EXPLICIT_JOURNAL_CHECKSUM);
- } else
- return -EINVAL;
- }
- if (m->flags & MOPT_CLEAR_ERR)
ctx_clear_mount_opt(ctx, EXT4_MOUNT_ERRORS_MASK);
-
- if (m->flags & MOPT_NOSUPPORT) {
- ext4_msg(NULL, KERN_ERR, "%s option not supported",
- param->key);
- } else if (token == Opt_commit) {
+ ctx_set_mount_opt(ctx, result.uint_32);
+ return 0;
+#ifdef CONFIG_QUOTA
+ case Opt_jqfmt:
+ ctx->s_jquota_fmt = result.uint_32;
+ ctx->spec |= EXT4_SPEC_JQFMT;
+ return 0;
+#endif
+ case Opt_data:
+ ctx_clear_mount_opt(ctx, EXT4_MOUNT_DATA_FLAGS);
+ ctx_set_mount_opt(ctx, result.uint_32);
+ ctx->spec |= EXT4_SPEC_DATAJ;
+ return 0;
+ case Opt_commit:
if (result.uint_32 == 0)
ctx->s_commit_interval = JBD2_DEFAULT_MAX_COMMIT_AGE;
else if (result.uint_32 > INT_MAX / HZ) {
@@ -2421,7 +2280,8 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
}
ctx->s_commit_interval = HZ * result.uint_32;
ctx->spec |= EXT4_SPEC_s_commit_interval;
- } else if (token == Opt_debug_want_extra_isize) {
+ return 0;
+ case Opt_debug_want_extra_isize:
if ((result.uint_32 & 1) || (result.uint_32 < 4)) {
ext4_msg(NULL, KERN_ERR,
"Invalid want_extra_isize %d", result.uint_32);
@@ -2429,13 +2289,16 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
}
ctx->s_want_extra_isize = result.uint_32;
ctx->spec |= EXT4_SPEC_s_want_extra_isize;
- } else if (token == Opt_max_batch_time) {
+ return 0;
+ case Opt_max_batch_time:
ctx->s_max_batch_time = result.uint_32;
ctx->spec |= EXT4_SPEC_s_max_batch_time;
- } else if (token == Opt_min_batch_time) {
+ return 0;
+ case Opt_min_batch_time:
ctx->s_min_batch_time = result.uint_32;
ctx->spec |= EXT4_SPEC_s_min_batch_time;
- } else if (token == Opt_inode_readahead_blks) {
+ return 0;
+ case Opt_inode_readahead_blks:
if (result.uint_32 &&
(result.uint_32 > (1 << 30) ||
!is_power_of_2(result.uint_32))) {
@@ -2446,24 +2309,29 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
}
ctx->s_inode_readahead_blks = result.uint_32;
ctx->spec |= EXT4_SPEC_s_inode_readahead_blks;
- } else if (token == Opt_init_itable) {
+ return 0;
+ case Opt_init_itable:
ctx_set_mount_opt(ctx, EXT4_MOUNT_INIT_INODE_TABLE);
ctx->s_li_wait_mult = EXT4_DEF_LI_WAIT_MULT;
if (param->type == fs_value_is_string)
ctx->s_li_wait_mult = result.uint_32;
ctx->spec |= EXT4_SPEC_s_li_wait_mult;
- } else if (token == Opt_max_dir_size_kb) {
+ return 0;
+ case Opt_max_dir_size_kb:
ctx->s_max_dir_size_kb = result.uint_32;
ctx->spec |= EXT4_SPEC_s_max_dir_size_kb;
+ return 0;
#ifdef CONFIG_EXT4_DEBUG
- } else if (token == Opt_fc_debug_max_replay) {
+ case Opt_fc_debug_max_replay:
ctx->s_fc_debug_max_replay = result.uint_32;
ctx->spec |= EXT4_SPEC_s_fc_debug_max_replay;
+ return 0;
#endif
- } else if (token == Opt_stripe) {
+ case Opt_stripe:
ctx->s_stripe = result.uint_32;
ctx->spec |= EXT4_SPEC_s_stripe;
- } else if (token == Opt_resuid) {
+ return 0;
+ case Opt_resuid:
uid = make_kuid(current_user_ns(), result.uint_32);
if (!uid_valid(uid)) {
ext4_msg(NULL, KERN_ERR, "Invalid uid value %d",
@@ -2472,7 +2340,8 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
}
ctx->s_resuid = uid;
ctx->spec |= EXT4_SPEC_s_resuid;
- } else if (token == Opt_resgid) {
+ return 0;
+ case Opt_resgid:
gid = make_kgid(current_user_ns(), result.uint_32);
if (!gid_valid(gid)) {
ext4_msg(NULL, KERN_ERR, "Invalid gid value %d",
@@ -2481,7 +2350,8 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
}
ctx->s_resgid = gid;
ctx->spec |= EXT4_SPEC_s_resgid;
- } else if (token == Opt_journal_dev) {
+ return 0;
+ case Opt_journal_dev:
if (is_remount) {
ext4_msg(NULL, KERN_ERR,
"Cannot specify journal on remount");
@@ -2489,7 +2359,9 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
}
ctx->journal_devnum = result.uint_32;
ctx->spec |= EXT4_SPEC_JOURNAL_DEV;
- } else if (token == Opt_journal_path) {
+ return 0;
+ case Opt_journal_path:
+ {
struct inode *journal_inode;
struct path path;
int error;
@@ -2511,7 +2383,9 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
ctx->journal_devnum = new_encode_dev(journal_inode->i_rdev);
ctx->spec |= EXT4_SPEC_JOURNAL_DEV;
path_put(&path);
- } else if (token == Opt_journal_ioprio) {
+ return 0;
+ }
+ case Opt_journal_ioprio:
if (result.uint_32 > 7) {
ext4_msg(NULL, KERN_ERR, "Invalid journal IO priority"
" (must be 0-7)");
@@ -2520,7 +2394,8 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
ctx->journal_ioprio =
IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, result.uint_32);
ctx->spec |= EXT4_SPEC_JOURNAL_IOPRIO;
- } else if (token == Opt_test_dummy_encryption) {
+ return 0;
+ case Opt_test_dummy_encryption:
#ifdef CONFIG_FS_ENCRYPTION
if (param->type == fs_value_is_flag) {
ctx->spec |= EXT4_SPEC_DUMMY_ENCRYPTION;
@@ -2542,53 +2417,65 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
ext4_msg(NULL, KERN_WARNING,
"Test dummy encryption mount option ignored");
#endif
- } else if (m->flags & MOPT_DATAJ) {
- ctx_clear_mount_opt(ctx, EXT4_MOUNT_DATA_FLAGS);
- ctx_set_mount_opt(ctx, m->mount_opt);
- ctx->spec |= EXT4_SPEC_DATAJ;
-#ifdef CONFIG_QUOTA
- } else if (m->flags & MOPT_QFMT) {
- ctx->s_jquota_fmt = m->mount_opt;
- ctx->spec |= EXT4_SPEC_JQFMT;
-#endif
- } else if (token == Opt_dax || token == Opt_dax_always ||
- token == Opt_dax_inode || token == Opt_dax_never) {
+ return 0;
+ case Opt_dax:
+ case Opt_dax_type:
#ifdef CONFIG_FS_DAX
- switch (token) {
+ {
+ int type = (token == Opt_dax) ?
+ Opt_dax : result.uint_32;
+
+ switch (type) {
case Opt_dax:
case Opt_dax_always:
- ctx_set_mount_opt(ctx, m->mount_opt);
+ ctx_set_mount_opt(ctx, EXT4_MOUNT_DAX_ALWAYS);
ctx_clear_mount_opt2(ctx, EXT4_MOUNT2_DAX_NEVER);
break;
case Opt_dax_never:
- ctx_set_mount_opt2(ctx, m->mount_opt);
+ ctx_set_mount_opt2(ctx, EXT4_MOUNT2_DAX_NEVER);
ctx_clear_mount_opt(ctx, EXT4_MOUNT_DAX_ALWAYS);
break;
case Opt_dax_inode:
ctx_clear_mount_opt(ctx, EXT4_MOUNT_DAX_ALWAYS);
ctx_clear_mount_opt2(ctx, EXT4_MOUNT2_DAX_NEVER);
/* Strictly for printing options */
- ctx_set_mount_opt2(ctx, m->mount_opt);
+ ctx_set_mount_opt2(ctx, EXT4_MOUNT2_DAX_INODE);
break;
}
+ return 0;
+ }
#else
ext4_msg(NULL, KERN_INFO, "dax option not supported");
- ctx_set_mount_opt2(ctx, EXT4_MOUNT2_DAX_NEVER);
- ctx_clear_mount_opt(ctx, EXT4_MOUNT_DAX_ALWAYS);
return -EINVAL;
#endif
- } else if (token == Opt_data_err_abort) {
- ctx_set_mount_opt(ctx, m->mount_opt);
- } else if (token == Opt_data_err_ignore) {
- ctx_clear_mount_opt(ctx, m->mount_opt);
- } else if (token == Opt_mb_optimize_scan) {
+ case Opt_data_err:
+ if (result.uint_32 == Opt_data_err_abort)
+ ctx_set_mount_opt(ctx, m->mount_opt);
+ else if (result.uint_32 == Opt_data_err_ignore)
+ ctx_clear_mount_opt(ctx, m->mount_opt);
+ return 0;
+ case Opt_mb_optimize_scan:
if (result.int_32 != 0 && result.int_32 != 1) {
ext4_msg(NULL, KERN_WARNING,
"mb_optimize_scan should be set to 0 or 1.");
return -EINVAL;
}
ctx->mb_optimize_scan = result.int_32;
- } else {
+ return 0;
+ }
+
+ /*
+ * At this point we should only be getting options requiring MOPT_SET,
+ * or MOPT_CLEAR. Anything else is a bug
+ */
+ if (m->token == Opt_err) {
+ ext4_msg(NULL, KERN_WARNING, "buggy handling of option %s",
+ param->key);
+ WARN_ON(1);
+ return -EINVAL;
+ }
+
+ else {
unsigned int set = 0;
if ((param->type == fs_value_is_flag) ||
@@ -2616,6 +2503,7 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
ctx_clear_mount_opt(ctx, m->mount_opt);
}
}
+
return 0;
}
@@ -3103,7 +2991,7 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb,
for (m = ext4_mount_opts; m->token != Opt_err; m++) {
int want_set = m->flags & MOPT_SET;
if (((m->flags & (MOPT_SET|MOPT_CLEAR)) == 0) ||
- (m->flags & MOPT_CLEAR_ERR) || m->flags & MOPT_SKIP)
+ m->flags & MOPT_SKIP)
continue;
if (!nodefs && !(m->mount_opt & (sbi->s_mount_opt ^ def_mount_opt)))
continue; /* skip if same as the default */
--
2.31.1
