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fs: sdfat: Add config option to register sdFAT for VFAT 

Change-Id: I72ba7a14b56175535884390e8601960b5d8ed1cf
Signed-off-by: Paul Keith <javelinanddart@gmail.com>
This commit is contained in:
Paul Keith 2018-03-02 05:10:27 +01:00 committed by syphyr
parent 4cd576cd64
commit f17c669051
2 changed files with 52 additions and 0 deletions
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7
fs/sdfat/Kconfig
View File

@ -22,6 +22,13 @@ config SDFAT_USE_FOR_EXFAT
help
If you want to register sdFAT as available for exFAT, say Y.
config SDFAT_USE_FOR_VFAT
bool "Register sdFAT as VFAT"
default y
depends on SDFAT_FS && !VFAT_FS
help
If you want to register sdFAT as available for VFAT, say Y.
config SDFAT_DELAYED_META_DIRTY
bool "Enable delayed metadata dirty"
default y

45
fs/sdfat/sdfat.c
View File

@ -4452,6 +4452,12 @@ enum {
Opt_discard,
Opt_fs,
Opt_adj_req,
#ifdef CONFIG_SDFAT_USE_FOR_VFAT
Opt_shortname_lower,
Opt_shortname_win95,
Opt_shortname_winnt,
Opt_shortname_mixed,
#endif /* CONFIG_SDFAT_USE_FOR_VFAT */
};
static const match_table_t sdfat_tokens = {
@ -4480,6 +4486,12 @@ static const match_table_t sdfat_tokens = {
{Opt_discard, "discard"},
{Opt_fs, "fs=%s"},
{Opt_adj_req, "adj_req"},
#ifdef CONFIG_SDFAT_USE_FOR_VFAT
{Opt_shortname_lower, "shortname=lower"},
{Opt_shortname_win95, "shortname=win95"},
{Opt_shortname_winnt, "shortname=winnt"},
{Opt_shortname_mixed, "shortname=mixed"},
#endif /* CONFIG_SDFAT_USE_FOR_VFAT */
{Opt_err, NULL}
};
@ -4646,6 +4658,14 @@ static int parse_options(struct super_block *sb, char *options, int silent,
IMSG("adjust request config is not enabled. ignore\n");
#endif
break;
#ifdef CONFIG_SDFAT_USE_FOR_VFAT
case Opt_shortname_lower:
case Opt_shortname_win95:
case Opt_shortname_mixed:
pr_warn("[SDFAT] DRAGONS AHEAD! sdFAT only understands \"shortname=winnt\"!\n");
case Opt_shortname_winnt:
break;
#endif /* CONFIG_SDFAT_USE_FOR_VFAT */
default:
if (!silent) {
sdfat_msg(sb, KERN_ERR,
@ -4985,6 +5005,20 @@ static struct file_system_type exfat_fs_type = {
};
#endif /* CONFIG_SDFAT_USE_FOR_EXFAT */
#ifdef CONFIG_SDFAT_USE_FOR_VFAT
static struct file_system_type vfat_fs_type = {
.owner = THIS_MODULE,
.name = "vfat",
.mount = sdfat_fs_mount,
#ifdef CONFIG_SDFAT_DBG_IOCTL
.kill_sb = sdfat_debug_kill_sb,
#else
.kill_sb = kill_block_super,
#endif /* CONFIG_SDFAT_DBG_IOCTL */
.fs_flags = FS_REQUIRES_DEV,
};
#endif /* CONFIG_SDFAT_USE_FOR_VFAT */
static int __init init_sdfat_fs(void)
{
int err;
@ -5031,6 +5065,14 @@ static int __init init_sdfat_fs(void)
}
#endif /* CONFIG_SDFAT_USE_FOR_EXFAT */
#ifdef CONFIG_SDFAT_USE_FOR_VFAT
err = register_filesystem(&vfat_fs_type);
if (err) {
pr_err("[SDFAT] failed to register for vfat filesystem\n");
goto error;
}
#endif /* CONFIG_SDFAT_USE_FOR_VFAT */
return 0;
error:
sdfat_statistics_uninit();
@ -5063,6 +5105,9 @@ static void __exit exit_sdfat_fs(void)
#ifdef CONFIG_SDFAT_USE_FOR_EXFAT
unregister_filesystem(&exfat_fs_type);
#endif /* CONFIG_SDFAT_USE_FOR_EXFAT */
#ifdef CONFIG_SDFAT_USE_FOR_VFAT
unregister_filesystem(&vfat_fs_type);
#endif /* CONFIG_SDFAT_USE_FOR_VFAT */
fsapi_shutdown();
}