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-rw-r--r--fs/f2fs/sysfs.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 0cd64f994068..b558b64a4c9c 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -10,6 +10,7 @@
#include <linux/proc_fs.h>
#include <linux/f2fs_fs.h>
#include <linux/seq_file.h>
+#include <linux/unicode.h>
#include "f2fs.h"
#include "segment.h"
@@ -81,6 +82,19 @@ static ssize_t unusable_show(struct f2fs_attr *a,
(unsigned long long)unusable);
}
+static ssize_t encoding_show(struct f2fs_attr *a,
+ struct f2fs_sb_info *sbi, char *buf)
+{
+#ifdef CONFIG_UNICODE
+ if (f2fs_sb_has_casefold(sbi))
+ return snprintf(buf, PAGE_SIZE, "%s (%d.%d.%d)\n",
+ sbi->s_encoding->charset,
+ (sbi->s_encoding->version >> 16) & 0xff,
+ (sbi->s_encoding->version >> 8) & 0xff,
+ sbi->s_encoding->version & 0xff);
+#endif
+ return snprintf(buf, PAGE_SIZE, "(none)");
+}
static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
@@ -137,6 +151,9 @@ static ssize_t features_show(struct f2fs_attr *a,
if (f2fs_sb_has_sb_chksum(sbi))
len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
len ? ", " : "", "sb_checksum");
+ if (f2fs_sb_has_casefold(sbi))
+ len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
+ len ? ", " : "", "casefold");
len += snprintf(buf + len, PAGE_SIZE - len, "\n");
return len;
}
@@ -369,6 +386,7 @@ enum feat_id {
FEAT_LOST_FOUND,
FEAT_VERITY,
FEAT_SB_CHECKSUM,
+ FEAT_CASEFOLD,
};
static ssize_t f2fs_feature_show(struct f2fs_attr *a,
@@ -387,6 +405,7 @@ static ssize_t f2fs_feature_show(struct f2fs_attr *a,
case FEAT_LOST_FOUND:
case FEAT_VERITY:
case FEAT_SB_CHECKSUM:
+ case FEAT_CASEFOLD:
return snprintf(buf, PAGE_SIZE, "supported\n");
}
return 0;
@@ -460,6 +479,7 @@ F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
F2FS_GENERAL_RO_ATTR(features);
F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
F2FS_GENERAL_RO_ATTR(unusable);
+F2FS_GENERAL_RO_ATTR(encoding);
#ifdef CONFIG_FS_ENCRYPTION
F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
@@ -479,6 +499,7 @@ F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND);
F2FS_FEATURE_RO_ATTR(verity, FEAT_VERITY);
#endif
F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM);
+F2FS_FEATURE_RO_ATTR(casefold, FEAT_CASEFOLD);
#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
static struct attribute *f2fs_attrs[] = {
@@ -523,6 +544,7 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(features),
ATTR_LIST(reserved_blocks),
ATTR_LIST(current_reserved_blocks),
+ ATTR_LIST(encoding),
NULL,
};
ATTRIBUTE_GROUPS(f2fs);
@@ -546,6 +568,7 @@ static struct attribute *f2fs_feat_attrs[] = {
ATTR_LIST(verity),
#endif
ATTR_LIST(sb_checksum),
+ ATTR_LIST(casefold),
NULL,
};
ATTRIBUTE_GROUPS(f2fs_feat);