f2fs-tools: reuse feature_table to clean up print_sb_state()

reuse feature_table in print_sb_state() for cleanup.

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

2 files changed, 52 insertions, 58 deletions

diff --git a/fsck/mount.c b/fsck/mount.c
index b87a6c8..25cec67 100644
--- a/fsck/mount.c
+++ b/fsck/mount.c
@@ -599,54 +599,28 @@ void print_cp_state(u32 flag)
 	MSG(0, "\n");
 }
 
+extern struct feature feature_table[];
 void print_sb_state(struct f2fs_super_block *sb)
 {
 	unsigned int f = get_sb(feature);
+	char *name;
 	int i;
 
 	MSG(0, "Info: superblock features = %x : ", f);
-	if (f & F2FS_FEATURE_ENCRYPT) {
-		MSG(0, "%s", " encrypt");
-	}
-	if (f & F2FS_FEATURE_VERITY) {
-		MSG(0, "%s", " verity");
-	}
-	if (f & F2FS_FEATURE_BLKZONED) {
-		MSG(0, "%s", " blkzoned");
-	}
-	if (f & F2FS_FEATURE_EXTRA_ATTR) {
-		MSG(0, "%s", " extra_attr");
-	}
-	if (f & F2FS_FEATURE_PRJQUOTA) {
-		MSG(0, "%s", " project_quota");
-	}
-	if (f & F2FS_FEATURE_INODE_CHKSUM) {
-		MSG(0, "%s", " inode_checksum");
-	}
-	if (f & F2FS_FEATURE_FLEXIBLE_INLINE_XATTR) {
-		MSG(0, "%s", " flexible_inline_xattr");
-	}
-	if (f & F2FS_FEATURE_QUOTA_INO) {
-		MSG(0, "%s", " quota_ino");
-	}
-	if (f & F2FS_FEATURE_INODE_CRTIME) {
-		MSG(0, "%s", " inode_crtime");
-	}
-	if (f & F2FS_FEATURE_LOST_FOUND) {
-		MSG(0, "%s", " lost_found");
-	}
-	if (f & F2FS_FEATURE_SB_CHKSUM) {
-		MSG(0, "%s", " sb_checksum");
-	}
-	if (f & F2FS_FEATURE_CASEFOLD) {
-		MSG(0, "%s", " casefold");
-	}
-	if (f & F2FS_FEATURE_COMPRESSION) {
-		MSG(0, "%s", " compression");
-	}
-	if (f & F2FS_FEATURE_RO) {
-		MSG(0, "%s", " ro");
+
+	for (i = 0; i < MAX_NR_FEATURE; i++) {
+		unsigned int bit = 1 << i;
+
+		if (!(f & bit))
+			continue;
+
+		name = feature_name(feature_table, bit);
+		if (!name)
+			continue;
+
+		MSG(0, " %s", name);
 	}
+
 	MSG(0, "\n");
 	MSG(0, "Info: superblock encrypt level = %d, salt = ",
 					sb->encryption_level);
diff --git a/include/f2fs_fs.h b/include/f2fs_fs.h
index 9d35b42..385d373 100644
--- a/include/f2fs_fs.h
+++ b/include/f2fs_fs.h
@@ -684,6 +684,8 @@ enum {
 #define F2FS_FEATURE_COMPRESSION	0x2000
 #define F2FS_FEATURE_RO			0x4000
 
+#define MAX_NR_FEATURE			32
+
 #define MAX_VOLUME_NAME		512
 
 /*
@@ -1811,35 +1813,53 @@ static inline void f2fs_init_inode(struct f2fs_super_block *sb,
 
 struct feature {
 	char *name;
-	u32  mask;
+	u32 mask;
+	u32 settable;
 };
 
 #define INIT_FEATURE_TABLE						\
 struct feature feature_table[] = {					\
-	{ "encrypt",			F2FS_FEATURE_ENCRYPT },		\
-	{ "extra_attr",			F2FS_FEATURE_EXTRA_ATTR },	\
-	{ "project_quota",		F2FS_FEATURE_PRJQUOTA },	\
-	{ "inode_checksum",		F2FS_FEATURE_INODE_CHKSUM },	\
-	{ "flexible_inline_xattr",	F2FS_FEATURE_FLEXIBLE_INLINE_XATTR },\
-	{ "quota",			F2FS_FEATURE_QUOTA_INO },	\
-	{ "inode_crtime",		F2FS_FEATURE_INODE_CRTIME },	\
-	{ "lost_found",			F2FS_FEATURE_LOST_FOUND },	\
-	{ "verity",			F2FS_FEATURE_VERITY },	/* reserved */ \
-	{ "sb_checksum",		F2FS_FEATURE_SB_CHKSUM },	\
-	{ "casefold",			F2FS_FEATURE_CASEFOLD },	\
-	{ "compression",		F2FS_FEATURE_COMPRESSION },	\
-	{ "ro",				F2FS_FEATURE_RO},		\
-	{ NULL,				0x0},				\
+	{ "encrypt",			F2FS_FEATURE_ENCRYPT,		1}, \
+	{ "blkzoned",			F2FS_FEATURE_BLKZONED,		0}, \
+	{ "extra_attr",			F2FS_FEATURE_EXTRA_ATTR,	1}, \
+	{ "project_quota",		F2FS_FEATURE_PRJQUOTA,		1}, \
+	{ "inode_checksum",		F2FS_FEATURE_INODE_CHKSUM,	1}, \
+	{ "flexible_inline_xattr",	F2FS_FEATURE_FLEXIBLE_INLINE_XATTR,1}, \
+	{ "quota",			F2FS_FEATURE_QUOTA_INO,		1}, \
+	{ "inode_crtime",		F2FS_FEATURE_INODE_CRTIME,	1}, \
+	{ "lost_found",			F2FS_FEATURE_LOST_FOUND,	1}, \
+	{ "verity",			F2FS_FEATURE_VERITY,		1}, \
+	{ "sb_checksum",		F2FS_FEATURE_SB_CHKSUM,		1}, \
+	{ "casefold",			F2FS_FEATURE_CASEFOLD,		1}, \
+	{ "compression",		F2FS_FEATURE_COMPRESSION,	1}, \
+	{ "ro",				F2FS_FEATURE_RO,		1}, \
+	{ NULL,				0x0,				0}, \
 };
 
 static inline u32 feature_map(struct feature *table, char *feature)
 {
 	struct feature *p;
-	for (p = table; p->name && strcmp(p->name, feature); p++)
-		;
+	for (p = table; p->name; p++) {
+		if (!p->settable)
+			continue;
+		if (strcmp(p->name, feature))
+			continue;
+		break;
+	}
 	return p->mask;
 }
 
+static inline char *feature_name(struct feature *table, u32 mask)
+{
+	struct feature *p;
+	for (p = table; p->name; p++) {
+		if (p->mask != mask)
+			continue;
+		break;
+	}
+	return p->name;
+}
+
 static inline int set_feature_bits(struct feature *table, char *features)
 {
 	u32 mask = feature_map(table, features);