From: Lukas Czerner <lczerner@redhat.com>
To: linux-ext4@vger.kernel.org, tytso@mit.edu
Cc: linux-fsdevel@vger.kernel.org
Subject: [PATCH v3 07/13] ext4: check ext2/3 compatibility outside handle_mount_opt()
Date: Thu, 21 Oct 2021 13:45:02 +0200 [thread overview]
Message-ID: <20211021114508.21407-8-lczerner@redhat.com> (raw)
In-Reply-To: <20211021114508.21407-1-lczerner@redhat.com>
At the parsing phase of mount in the new mount api sb will not be
available so move ext2/3 compatibility check outside handle_mount_opt().
Unfortunately we will lose the ability to show exactly which option is
not compatible.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
---
fs/ext4/super.c | 41 +++++++++++++++++++++++++----------------
1 file changed, 25 insertions(+), 16 deletions(-)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 32e6e412cf24..8359215d79ee 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -88,8 +88,8 @@ static void ext4_clear_request_list(void);
static struct inode *ext4_get_journal_inode(struct super_block *sb,
unsigned int journal_inum);
static int ext4_validate_options(struct fs_context *fc);
-static int ext4_check_quota_consistency(struct fs_context *fc,
- struct super_block *sb);
+static int ext4_check_opt_consistency(struct fs_context *fc,
+ struct super_block *sb);
static void ext4_apply_quota_options(struct fs_context *fc,
struct super_block *sb);
@@ -2192,6 +2192,7 @@ struct ext4_fs_context {
unsigned long journal_devnum;
unsigned int journal_ioprio;
int mb_optimize_scan;
+ unsigned int opt_flags; /* MOPT flags */
};
#ifdef CONFIG_QUOTA
@@ -2321,25 +2322,14 @@ static int handle_mount_opt(struct fs_context *fc, struct fs_parameter *param)
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_NO_EXT2) && IS_EXT2_SB(sb)) {
- ext4_msg(NULL, KERN_ERR,
- "Mount option \"%s\" incompatible with ext2",
- param->key);
- return -EINVAL;
- }
- if ((m->flags & MOPT_NO_EXT3) && IS_EXT3_SB(sb)) {
- ext4_msg(NULL, KERN_ERR,
- "Mount option \"%s\" incompatible with ext3",
- param->key);
- return -EINVAL;
- }
-
if (m->flags & MOPT_EXPLICIT) {
if (m->mount_opt & EXT4_MOUNT_DELALLOC) {
set_opt2(sb, EXPLICIT_DELALLOC);
@@ -2622,7 +2612,7 @@ static int parse_options(char *options, struct super_block *sb,
if (ret < 0)
return 0;
- ret = ext4_check_quota_consistency(&fc, sb);
+ ret = ext4_check_opt_consistency(&fc, sb);
if (ret < 0)
return 0;
@@ -2715,6 +2705,25 @@ static int ext4_check_quota_consistency(struct fs_context *fc,
#endif
}
+static int ext4_check_opt_consistency(struct fs_context *fc,
+ struct super_block *sb)
+{
+ struct ext4_fs_context *ctx = fc->fs_private;
+
+ if ((ctx->opt_flags & MOPT_NO_EXT2) && IS_EXT2_SB(sb)) {
+ ext4_msg(NULL, KERN_ERR,
+ "Mount option(s) incompatible with ext2");
+ return -EINVAL;
+ }
+ if ((ctx->opt_flags & MOPT_NO_EXT3) && IS_EXT3_SB(sb)) {
+ ext4_msg(NULL, KERN_ERR,
+ "Mount option(s) incompatible with ext3");
+ return -EINVAL;
+ }
+
+ return ext4_check_quota_consistency(fc, sb);
+}
+
static int ext4_validate_options(struct fs_context *fc)
{
struct ext4_sb_info *sbi = fc->s_fs_info;
--
2.31.1
next prev parent reply other threads:[~2021-10-21 11:45 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-21 11:44 [PATCH v3 00/13] ext4: new mount API conversion Lukas Czerner
2021-10-21 11:44 ` [PATCH v3 01/13] fs_parse: allow parameter value to be empty Lukas Czerner
2021-10-25 11:12 ` Carlos Maiolino
2021-10-21 11:44 ` [PATCH v3 02/13] ext4: Add fs parameter specifications for mount options Lukas Czerner
2021-10-21 11:44 ` [PATCH v3 03/13] ext4: move option validation to a separate function Lukas Czerner
2021-10-21 11:44 ` [PATCH v3 04/13] ext4: Change handle_mount_opt() to use fs_parameter Lukas Czerner
2021-10-21 11:45 ` [PATCH v3 05/13] ext4: Allow sb to be NULL in ext4_msg() Lukas Czerner
2021-10-21 11:45 ` [PATCH v3 06/13] ext4: move quota configuration out of handle_mount_opt() Lukas Czerner
2021-10-21 19:57 ` kernel test robot
2021-10-21 11:45 ` Lukas Czerner [this message]
2021-10-21 11:45 ` [PATCH v3 08/13] ext4: get rid of super block and sbi from handle_mount_ops() Lukas Czerner
2021-10-27 1:32 ` kernel test robot
2021-10-21 11:45 ` [PATCH v3 09/13] ext4: Completely separate options parsing and sb setup Lukas Czerner
2021-10-26 11:41 ` Carlos Maiolino
2021-10-21 11:45 ` [PATCH v3 10/13] ext4: clean up return values in handle_mount_opt() Lukas Czerner
2021-10-21 11:45 ` [PATCH v3 11/13] ext4: change token2str() to use ext4_param_specs Lukas Czerner
2021-10-26 11:40 ` Carlos Maiolino
2021-10-26 12:09 ` Lukas Czerner
2021-10-27 11:52 ` Lukas Czerner
2021-10-21 11:45 ` [PATCH v3 12/13] ext4: switch to the new mount api Lukas Czerner
2022-01-13 11:29 ` Jon Hunter
2022-01-13 12:08 ` Lukas Czerner
2022-01-13 15:06 ` Jon Hunter
2022-01-13 16:10 ` Jon Hunter
2022-01-14 9:40 ` Jon Hunter
2021-10-21 11:45 ` [PATCH v3 13/13] ext4: Remove unused match_table_t tokens Lukas Czerner
2021-10-26 11:39 ` [PATCH v3 00/13] ext4: new mount API conversion Carlos Maiolino
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