btrfs-progs: move fs features implementation to own file

Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 1 insertions, 207 deletions

diff --git a/utils.c b/utils.c
index 9de1ca2b..794f4e68 100644
--- a/utils.c
+++ b/utils.c
@@ -37,8 +37,7 @@
 #include <sys/vfs.h>
 #include <sys/statfs.h>
 #include <linux/magic.h>
-#include <sys/utsname.h>
-#include <linux/version.h>
+#include <getopt.h>
 
 #include "kerncompat.h"
 #include "radix-tree.h"
@@ -50,7 +49,6 @@
 #include "volumes.h"
 #include "ioctl.h"
 #include "commands.h"
-#include "fsfeatures.h"
 
 #ifndef BLKDISCARD
 #define BLKDISCARD	_IO(0x12,119)
@@ -124,210 +122,6 @@ int test_uuid_unique(char *fs_uuid)
 	return unique;
 }
 
-/*
- * Insert a root item for temporary tree root
- *
- * Only used in make_btrfs_v2().
- */
-#define VERSION_TO_STRING3(a,b,c)	#a "." #b "." #c, KERNEL_VERSION(a,b,c)
-#define VERSION_TO_STRING2(a,b)		#a "." #b, KERNEL_VERSION(a,b,0)
-
-/*
- * Feature stability status and versions: compat <= safe <= default
- */
-static const struct btrfs_fs_feature {
-	const char *name;
-	u64 flag;
-	const char *sysfs_name;
-	/*
-	 * Compatibility with kernel of given version. Filesystem can be
-	 * mounted.
-	 */
-	const char *compat_str;
-	u32 compat_ver;
-	/*
-	 * Considered safe for use, but is not on by default, even if the
-	 * kernel supports the feature.
-	 */
-	const char *safe_str;
-	u32 safe_ver;
-	/*
-	 * Considered safe for use and will be turned on by default if
-	 * supported by the running kernel.
-	 */
-	const char *default_str;
-	u32 default_ver;
-	const char *desc;
-} mkfs_features[] = {
-	{ "mixed-bg", BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS,
-		"mixed_groups",
-		VERSION_TO_STRING3(2,6,37),
-		VERSION_TO_STRING3(2,6,37),
-		NULL, 0,
-		"mixed data and metadata block groups" },
-	{ "extref", BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF,
-		"extended_iref",
-		VERSION_TO_STRING2(3,7),
-		VERSION_TO_STRING2(3,12),
-		VERSION_TO_STRING2(3,12),
-		"increased hardlink limit per file to 65536" },
-	{ "raid56", BTRFS_FEATURE_INCOMPAT_RAID56,
-		"raid56",
-		VERSION_TO_STRING2(3,9),
-		NULL, 0,
-		NULL, 0,
-		"raid56 extended format" },
-	{ "skinny-metadata", BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA,
-		"skinny_metadata",
-		VERSION_TO_STRING2(3,10),
-		VERSION_TO_STRING2(3,18),
-		VERSION_TO_STRING2(3,18),
-		"reduced-size metadata extent refs" },
-	{ "no-holes", BTRFS_FEATURE_INCOMPAT_NO_HOLES,
-		"no_holes",
-		VERSION_TO_STRING2(3,14),
-		VERSION_TO_STRING2(4,0),
-		NULL, 0,
-		"no explicit hole extents for files" },
-	/* Keep this one last */
-	{ "list-all", BTRFS_FEATURE_LIST_ALL, NULL }
-};
-
-static int parse_one_fs_feature(const char *name, u64 *flags)
-{
-	int i;
-	int found = 0;
-
-	for (i = 0; i < ARRAY_SIZE(mkfs_features); i++) {
-		if (name[0] == '^' &&
-			!strcmp(mkfs_features[i].name, name + 1)) {
-			*flags &= ~ mkfs_features[i].flag;
-			found = 1;
-		} else if (!strcmp(mkfs_features[i].name, name)) {
-			*flags |= mkfs_features[i].flag;
-			found = 1;
-		}
-	}
-
-	return !found;
-}
-
-void btrfs_parse_features_to_string(char *buf, u64 flags)
-{
-	int i;
-
-	buf[0] = 0;
-
-	for (i = 0; i < ARRAY_SIZE(mkfs_features); i++) {
-		if (flags & mkfs_features[i].flag) {
-			if (*buf)
-				strcat(buf, ", ");
-			strcat(buf, mkfs_features[i].name);
-		}
-	}
-}
-
-void btrfs_process_fs_features(u64 flags)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(mkfs_features); i++) {
-		if (flags & mkfs_features[i].flag) {
-			printf("Turning ON incompat feature '%s': %s\n",
-				mkfs_features[i].name,
-				mkfs_features[i].desc);
-		}
-	}
-}
-
-void btrfs_list_all_fs_features(u64 mask_disallowed)
-{
-	int i;
-
-	fprintf(stderr, "Filesystem features available:\n");
-	for (i = 0; i < ARRAY_SIZE(mkfs_features) - 1; i++) {
-		const struct btrfs_fs_feature *feat = &mkfs_features[i];
-
-		if (feat->flag & mask_disallowed)
-			continue;
-		fprintf(stderr, "%-20s- %s (0x%llx", feat->name, feat->desc,
-				feat->flag);
-		if (feat->compat_ver)
-			fprintf(stderr, ", compat=%s", feat->compat_str);
-		if (feat->safe_ver)
-			fprintf(stderr, ", safe=%s", feat->safe_str);
-		if (feat->default_ver)
-			fprintf(stderr, ", default=%s", feat->default_str);
-		fprintf(stderr, ")\n");
-	}
-}
-
-/*
- * Return NULL if all features were parsed fine, otherwise return the name of
- * the first unparsed.
- */
-char* btrfs_parse_fs_features(char *namelist, u64 *flags)
-{
-	char *this_char;
-	char *save_ptr = NULL; /* Satisfy static checkers */
-
-	for (this_char = strtok_r(namelist, ",", &save_ptr);
-	     this_char != NULL;
-	     this_char = strtok_r(NULL, ",", &save_ptr)) {
-		if (parse_one_fs_feature(this_char, flags))
-			return this_char;
-	}
-
-	return NULL;
-}
-
-void print_kernel_version(FILE *stream, u32 version)
-{
-	u32 v[3];
-
-	v[0] = version & 0xFF;
-	v[1] = (version >> 8) & 0xFF;
-	v[2] = version >> 16;
-	fprintf(stream, "%u.%u", v[2], v[1]);
-	if (v[0])
-		fprintf(stream, ".%u", v[0]);
-}
-
-u32 get_running_kernel_version(void)
-{
-	struct utsname utsbuf;
-	char *tmp;
-	char *saveptr = NULL;
-	u32 version;
-
-	uname(&utsbuf);
-	if (strcmp(utsbuf.sysname, "Linux") != 0) {
-		error("unsupported system: %s", utsbuf.sysname);
-		exit(1);
-	}
-	/* 1.2.3-4-name */
-	tmp = strchr(utsbuf.release, '-');
-	if (tmp)
-		*tmp = 0;
-
-	tmp = strtok_r(utsbuf.release, ".", &saveptr);
-	if (!string_is_numerical(tmp))
-		return (u32)-1;
-	version = atoi(tmp) << 16;
-	tmp = strtok_r(NULL, ".", &saveptr);
-	if (!string_is_numerical(tmp))
-		return (u32)-1;
-	version |= atoi(tmp) << 8;
-	tmp = strtok_r(NULL, ".", &saveptr);
-	if (tmp) {
-		if (!string_is_numerical(tmp))
-			return (u32)-1;
-		version |= atoi(tmp);
-	}
-
-	return version;
-}
-
 u64 btrfs_device_size(int fd, struct stat *st)
 {
 	u64 size;