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path: root/fs/ext4/super.c
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Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r--fs/ext4/super.c230
1 files changed, 113 insertions, 117 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 69e5e70cfdee..9b36c11baad9 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1508,8 +1508,7 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token,
case Opt_sb:
return 1; /* handled by get_sb_block() */
case Opt_removed:
- ext4_msg(sb, KERN_WARNING,
- "Ignoring removed %s option", opt);
+ ext4_msg(sb, KERN_WARNING, "Ignoring removed %s option", opt);
return 1;
case Opt_abort:
sbi->s_mount_flags |= EXT4_MF_FS_ABORTED;
@@ -1519,132 +1518,129 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token,
return 1;
}
- for (m = ext4_mount_opts; m->token != Opt_err; m++) {
- if (token != m->token)
- continue;
- if (args->from && match_int(args, &arg))
+ for (m = ext4_mount_opts; m->token != Opt_err; m++)
+ if (token == m->token)
+ break;
+
+ if (m->token == Opt_err) {
+ ext4_msg(sb, KERN_ERR, "Unrecognized mount option \"%s\" "
+ "or missing value", opt);
+ return -1;
+ }
+
+ if (args->from && match_int(args, &arg))
+ return -1;
+ if (args->from && (m->flags & MOPT_GTE0) && (arg < 0))
+ return -1;
+ if (m->flags & MOPT_EXPLICIT)
+ set_opt2(sb, EXPLICIT_DELALLOC);
+ if (m->flags & MOPT_CLEAR_ERR)
+ clear_opt(sb, ERRORS_MASK);
+ if (token == Opt_noquota && sb_any_quota_loaded(sb)) {
+ ext4_msg(sb, KERN_ERR, "Cannot change quota "
+ "options when quota turned on");
+ return -1;
+ }
+
+ if (m->flags & MOPT_NOSUPPORT) {
+ ext4_msg(sb, KERN_ERR, "%s option not supported", opt);
+ } else if (token == Opt_commit) {
+ if (arg == 0)
+ arg = JBD2_DEFAULT_MAX_COMMIT_AGE;
+ sbi->s_commit_interval = HZ * arg;
+ } else if (token == Opt_max_batch_time) {
+ if (arg == 0)
+ arg = EXT4_DEF_MAX_BATCH_TIME;
+ sbi->s_max_batch_time = arg;
+ } else if (token == Opt_min_batch_time) {
+ sbi->s_min_batch_time = arg;
+ } else if (token == Opt_inode_readahead_blks) {
+ if (arg > (1 << 30))
return -1;
- if (args->from && (m->flags & MOPT_GTE0) && (arg < 0))
+ if (arg && !is_power_of_2(arg)) {
+ ext4_msg(sb, KERN_ERR, "EXT4-fs: inode_readahead_blks"
+ " must be a power of 2");
return -1;
- if (m->flags & MOPT_EXPLICIT)
- set_opt2(sb, EXPLICIT_DELALLOC);
- if (m->flags & MOPT_CLEAR_ERR)
- clear_opt(sb, ERRORS_MASK);
- if (token == Opt_noquota && sb_any_quota_loaded(sb)) {
- ext4_msg(sb, KERN_ERR, "Cannot change quota "
- "options when quota turned on");
+ }
+ sbi->s_inode_readahead_blks = arg;
+ } else if (token == Opt_init_itable) {
+ set_opt(sb, INIT_INODE_TABLE);
+ if (!args->from)
+ arg = EXT4_DEF_LI_WAIT_MULT;
+ sbi->s_li_wait_mult = arg;
+ } else if (token == Opt_max_dir_size_kb) {
+ sbi->s_max_dir_size_kb = arg;
+ } else if (token == Opt_stripe) {
+ sbi->s_stripe = arg;
+ } else if (token == Opt_resuid) {
+ uid = make_kuid(current_user_ns(), arg);
+ if (!uid_valid(uid)) {
+ ext4_msg(sb, KERN_ERR, "Invalid uid value %d", arg);
return -1;
}
-
- if (m->flags & MOPT_NOSUPPORT) {
- ext4_msg(sb, KERN_ERR, "%s option not supported", opt);
- } else if (token == Opt_commit) {
- if (arg == 0)
- arg = JBD2_DEFAULT_MAX_COMMIT_AGE;
- sbi->s_commit_interval = HZ * arg;
- } else if (token == Opt_max_batch_time) {
- if (arg == 0)
- arg = EXT4_DEF_MAX_BATCH_TIME;
- sbi->s_max_batch_time = arg;
- } else if (token == Opt_min_batch_time) {
- sbi->s_min_batch_time = arg;
- } else if (token == Opt_inode_readahead_blks) {
- if (arg > (1 << 30))
- return -1;
- if (arg && !is_power_of_2(arg)) {
- ext4_msg(sb, KERN_ERR,
- "EXT4-fs: inode_readahead_blks"
- " must be a power of 2");
- return -1;
- }
- sbi->s_inode_readahead_blks = arg;
- } else if (token == Opt_init_itable) {
- set_opt(sb, INIT_INODE_TABLE);
- if (!args->from)
- arg = EXT4_DEF_LI_WAIT_MULT;
- sbi->s_li_wait_mult = arg;
- } else if (token == Opt_max_dir_size_kb) {
- sbi->s_max_dir_size_kb = arg;
- } else if (token == Opt_stripe) {
- sbi->s_stripe = arg;
- } else if (token == Opt_resuid) {
- uid = make_kuid(current_user_ns(), arg);
- if (!uid_valid(uid)) {
- ext4_msg(sb, KERN_ERR,
- "Invalid uid value %d", arg);
- return -1;
- }
- sbi->s_resuid = uid;
- } else if (token == Opt_resgid) {
- gid = make_kgid(current_user_ns(), arg);
- if (!gid_valid(gid)) {
- ext4_msg(sb, KERN_ERR,
- "Invalid gid value %d", arg);
- return -1;
- }
- sbi->s_resgid = gid;
- } else if (token == Opt_journal_dev) {
- if (is_remount) {
- ext4_msg(sb, KERN_ERR,
- "Cannot specify journal on remount");
- return -1;
- }
- *journal_devnum = arg;
- } else if (token == Opt_journal_ioprio) {
- if (arg > 7) {
+ sbi->s_resuid = uid;
+ } else if (token == Opt_resgid) {
+ gid = make_kgid(current_user_ns(), arg);
+ if (!gid_valid(gid)) {
+ ext4_msg(sb, KERN_ERR, "Invalid gid value %d", arg);
+ return -1;
+ }
+ sbi->s_resgid = gid;
+ } else if (token == Opt_journal_dev) {
+ if (is_remount) {
+ ext4_msg(sb, KERN_ERR,
+ "Cannot specify journal on remount");
+ return -1;
+ }
+ *journal_devnum = arg;
+ } else if (token == Opt_journal_ioprio) {
+ if (arg > 7) {
+ ext4_msg(sb, KERN_ERR, "Invalid journal IO priority"
+ " (must be 0-7)");
+ return -1;
+ }
+ *journal_ioprio =
+ IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, arg);
+ } else if (m->flags & MOPT_DATAJ) {
+ if (is_remount) {
+ if (!sbi->s_journal)
+ ext4_msg(sb, KERN_WARNING, "Remounting file system with no journal so ignoring journalled data option");
+ else if (test_opt(sb, DATA_FLAGS) != m->mount_opt) {
ext4_msg(sb, KERN_ERR,
- "Invalid journal IO priority"
- " (must be 0-7)");
- return -1;
- }
- *journal_ioprio =
- IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, arg);
- } else if (m->flags & MOPT_DATAJ) {
- if (is_remount) {
- if (!sbi->s_journal)
- ext4_msg(sb, KERN_WARNING, "Remounting file system with no journal so ignoring journalled data option");
- else if (test_opt(sb, DATA_FLAGS) !=
- m->mount_opt) {
- ext4_msg(sb, KERN_ERR,
"Cannot change data mode on remount");
- return -1;
- }
- } else {
- clear_opt(sb, DATA_FLAGS);
- sbi->s_mount_opt |= m->mount_opt;
- }
-#ifdef CONFIG_QUOTA
- } else if (m->flags & MOPT_QFMT) {
- if (sb_any_quota_loaded(sb) &&
- sbi->s_jquota_fmt != m->mount_opt) {
- ext4_msg(sb, KERN_ERR, "Cannot "
- "change journaled quota options "
- "when quota turned on");
return -1;
}
- sbi->s_jquota_fmt = m->mount_opt;
-#endif
} else {
- if (!args->from)
- arg = 1;
- if (m->flags & MOPT_CLEAR)
- arg = !arg;
- else if (unlikely(!(m->flags & MOPT_SET))) {
- ext4_msg(sb, KERN_WARNING,
- "buggy handling of option %s", opt);
- WARN_ON(1);
- return -1;
- }
- if (arg != 0)
- sbi->s_mount_opt |= m->mount_opt;
- else
- sbi->s_mount_opt &= ~m->mount_opt;
+ clear_opt(sb, DATA_FLAGS);
+ sbi->s_mount_opt |= m->mount_opt;
}
- return 1;
+#ifdef CONFIG_QUOTA
+ } else if (m->flags & MOPT_QFMT) {
+ if (sb_any_quota_loaded(sb) &&
+ sbi->s_jquota_fmt != m->mount_opt) {
+ ext4_msg(sb, KERN_ERR, "Cannot change journaled "
+ "quota options when quota turned on");
+ return -1;
+ }
+ sbi->s_jquota_fmt = m->mount_opt;
+#endif
+ } else {
+ if (!args->from)
+ arg = 1;
+ if (m->flags & MOPT_CLEAR)
+ arg = !arg;
+ else if (unlikely(!(m->flags & MOPT_SET))) {
+ ext4_msg(sb, KERN_WARNING,
+ "buggy handling of option %s", opt);
+ WARN_ON(1);
+ return -1;
+ }
+ if (arg != 0)
+ sbi->s_mount_opt |= m->mount_opt;
+ else
+ sbi->s_mount_opt &= ~m->mount_opt;
}
- ext4_msg(sb, KERN_ERR, "Unrecognized mount option \"%s\" "
- "or missing value", opt);
- return -1;
+ return 1;
}
static int parse_options(char *options, struct super_block *sb,
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-08 10:06:57 +0300