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Message-Id: <20211021114508.21407-3-lczerner@redhat.com>
Date: Thu, 21 Oct 2021 13:44:57 +0200
From: Lukas Czerner <lczerner@...hat.com>
To: linux-ext4@...r.kernel.org, tytso@....edu
Cc: linux-fsdevel@...r.kernel.org
Subject: [PATCH v3 02/13] ext4: Add fs parameter specifications for mount options
Create an array of fs_parameter_spec called ext4_param_specs to
hold the mount option specifications we're going to be using with the
new mount api.
Signed-off-by: Lukas Czerner <lczerner@...hat.com>
---
fs/ext4/super.c | 151 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 151 insertions(+)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 88d5d274a868..42f4a3741692 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -46,6 +46,8 @@
#include <linux/part_stat.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
+#include <linux/fs_context.h>
+#include <linux/fs_parser.h>
#include "ext4.h"
#include "ext4_extents.h" /* Needed for trace points definition */
@@ -1681,11 +1683,160 @@ enum {
Opt_discard, Opt_nodiscard, Opt_init_itable, Opt_noinit_itable,
Opt_max_dir_size_kb, Opt_nojournal_checksum, Opt_nombcache,
Opt_no_prefetch_block_bitmaps, Opt_mb_optimize_scan,
+ Opt_errors, Opt_data, Opt_data_err, Opt_jqfmt, Opt_dax_type,
#ifdef CONFIG_EXT4_DEBUG
Opt_fc_debug_max_replay, Opt_fc_debug_force
#endif
};
+static const struct constant_table ext4_param_errors[] = {
+ {"continue", Opt_err_cont},
+ {"panic", Opt_err_panic},
+ {"remount-ro", Opt_err_ro},
+ {}
+};
+
+static const struct constant_table ext4_param_data[] = {
+ {"journal", Opt_data_journal},
+ {"ordered", Opt_data_ordered},
+ {"writeback", Opt_data_writeback},
+ {}
+};
+
+static const struct constant_table ext4_param_data_err[] = {
+ {"abort", Opt_data_err_abort},
+ {"ignore", Opt_data_err_ignore},
+ {}
+};
+
+static const struct constant_table ext4_param_jqfmt[] = {
+ {"vfsold", Opt_jqfmt_vfsold},
+ {"vfsv0", Opt_jqfmt_vfsv0},
+ {"vfsv1", Opt_jqfmt_vfsv1},
+ {}
+};
+
+static const struct constant_table ext4_param_dax[] = {
+ {"always", Opt_dax_always},
+ {"inode", Opt_dax_inode},
+ {"never", Opt_dax_never},
+ {}
+};
+
+/* String parameter that allows empty argument */
+#define fsparam_string_empty(NAME, OPT) \
+ __fsparam(fs_param_is_string, NAME, OPT, fs_param_can_be_empty, NULL)
+
+/*
+ * Mount option specification
+ * We don't use fsparam_flag_no because of the way we set the
+ * options and the way we show them in _ext4_show_options(). To
+ * keep the changes to a minimum, let's keep the negative options
+ * separate for now.
+ */
+static const struct fs_parameter_spec ext4_param_specs[] = {
+ fsparam_flag ("bsddf", Opt_bsd_df),
+ fsparam_flag ("minixdf", Opt_minix_df),
+ fsparam_flag ("grpid", Opt_grpid),
+ fsparam_flag ("bsdgroups", Opt_grpid),
+ fsparam_flag ("nogrpid", Opt_nogrpid),
+ fsparam_flag ("sysvgroups", Opt_nogrpid),
+ fsparam_u32 ("resgid", Opt_resgid),
+ fsparam_u32 ("resuid", Opt_resuid),
+ fsparam_u32 ("sb", Opt_sb),
+ fsparam_enum ("errors", Opt_errors, ext4_param_errors),
+ fsparam_flag ("nouid32", Opt_nouid32),
+ fsparam_flag ("debug", Opt_debug),
+ fsparam_flag ("oldalloc", Opt_removed),
+ fsparam_flag ("orlov", Opt_removed),
+ fsparam_flag ("user_xattr", Opt_user_xattr),
+ fsparam_flag ("nouser_xattr", Opt_nouser_xattr),
+ fsparam_flag ("acl", Opt_acl),
+ fsparam_flag ("noacl", Opt_noacl),
+ fsparam_flag ("norecovery", Opt_noload),
+ fsparam_flag ("noload", Opt_noload),
+ fsparam_flag ("bh", Opt_removed),
+ fsparam_flag ("nobh", Opt_removed),
+ fsparam_u32 ("commit", Opt_commit),
+ fsparam_u32 ("min_batch_time", Opt_min_batch_time),
+ fsparam_u32 ("max_batch_time", Opt_max_batch_time),
+ fsparam_u32 ("journal_dev", Opt_journal_dev),
+ fsparam_bdev ("journal_path", Opt_journal_path),
+ fsparam_flag ("journal_checksum", Opt_journal_checksum),
+ fsparam_flag ("nojournal_checksum", Opt_nojournal_checksum),
+ fsparam_flag ("journal_async_commit",Opt_journal_async_commit),
+ fsparam_flag ("abort", Opt_abort),
+ fsparam_enum ("data", Opt_data, ext4_param_data),
+ fsparam_enum ("data_err", Opt_data_err,
+ ext4_param_data_err),
+ fsparam_string_empty
+ ("usrjquota", Opt_usrjquota),
+ fsparam_string_empty
+ ("grpjquota", Opt_grpjquota),
+ fsparam_enum ("jqfmt", Opt_jqfmt, ext4_param_jqfmt),
+ fsparam_flag ("grpquota", Opt_grpquota),
+ fsparam_flag ("quota", Opt_quota),
+ fsparam_flag ("noquota", Opt_noquota),
+ fsparam_flag ("usrquota", Opt_usrquota),
+ fsparam_flag ("prjquota", Opt_prjquota),
+ fsparam_flag ("barrier", Opt_barrier),
+ fsparam_u32 ("barrier", Opt_barrier),
+ fsparam_flag ("nobarrier", Opt_nobarrier),
+ fsparam_flag ("i_version", Opt_i_version),
+ fsparam_flag ("dax", Opt_dax),
+ fsparam_enum ("dax", Opt_dax_type, ext4_param_dax),
+ fsparam_u32 ("stripe", Opt_stripe),
+ fsparam_flag ("delalloc", Opt_delalloc),
+ fsparam_flag ("nodelalloc", Opt_nodelalloc),
+ fsparam_flag ("warn_on_error", Opt_warn_on_error),
+ fsparam_flag ("nowarn_on_error", Opt_nowarn_on_error),
+ fsparam_flag ("lazytime", Opt_lazytime),
+ fsparam_flag ("nolazytime", Opt_nolazytime),
+ fsparam_u32 ("debug_want_extra_isize",
+ Opt_debug_want_extra_isize),
+ fsparam_flag ("mblk_io_submit", Opt_removed),
+ fsparam_flag ("nomblk_io_submit", Opt_removed),
+ fsparam_flag ("block_validity", Opt_block_validity),
+ fsparam_flag ("noblock_validity", Opt_noblock_validity),
+ fsparam_u32 ("inode_readahead_blks",
+ Opt_inode_readahead_blks),
+ fsparam_u32 ("journal_ioprio", Opt_journal_ioprio),
+ fsparam_u32 ("auto_da_alloc", Opt_auto_da_alloc),
+ fsparam_flag ("auto_da_alloc", Opt_auto_da_alloc),
+ fsparam_flag ("noauto_da_alloc", Opt_noauto_da_alloc),
+ fsparam_flag ("dioread_nolock", Opt_dioread_nolock),
+ fsparam_flag ("nodioread_nolock", Opt_dioread_lock),
+ fsparam_flag ("dioread_lock", Opt_dioread_lock),
+ fsparam_flag ("discard", Opt_discard),
+ fsparam_flag ("nodiscard", Opt_nodiscard),
+ fsparam_u32 ("init_itable", Opt_init_itable),
+ fsparam_flag ("init_itable", Opt_init_itable),
+ fsparam_flag ("noinit_itable", Opt_noinit_itable),
+#ifdef CONFIG_EXT4_DEBUG
+ fsparam_flag ("fc_debug_force", Opt_fc_debug_force),
+ fsparam_u32 ("fc_debug_max_replay", Opt_fc_debug_max_replay),
+#endif
+ fsparam_u32 ("max_dir_size_kb", Opt_max_dir_size_kb),
+ fsparam_flag ("test_dummy_encryption",
+ Opt_test_dummy_encryption),
+ fsparam_string ("test_dummy_encryption",
+ Opt_test_dummy_encryption),
+ fsparam_flag ("inlinecrypt", Opt_inlinecrypt),
+ fsparam_flag ("nombcache", Opt_nombcache),
+ fsparam_flag ("no_mbcache", Opt_nombcache), /* for backward compatibility */
+ fsparam_flag ("prefetch_block_bitmaps",
+ Opt_removed),
+ fsparam_flag ("no_prefetch_block_bitmaps",
+ Opt_no_prefetch_block_bitmaps),
+ fsparam_s32 ("mb_optimize_scan", Opt_mb_optimize_scan),
+ fsparam_string ("check", Opt_removed), /* mount option from ext2/3 */
+ fsparam_flag ("nocheck", Opt_removed), /* mount option from ext2/3 */
+ fsparam_flag ("reservation", Opt_removed), /* mount option from ext2/3 */
+ fsparam_flag ("noreservation", Opt_removed), /* mount option from ext2/3 */
+ fsparam_u32 ("journal", Opt_removed), /* mount option from ext2/3 */
+ {}
+};
+
static const match_table_t tokens = {
{Opt_bsd_df, "bsddf"},
{Opt_minix_df, "minixdf"},
--
2.31.1
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