btrfs-progs: fi usage: list multiple profiles type

Update the summary of 'fi usage' where the multiple profiles will be
listed by type, like:

    Multiple profiles:                 yes      (data, metadata)

The string is returned from btrfs_test_for_multiple_profiles so the
callers don't have to assemble it together from the other profile
strings.

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

cmds/filesystem-usage.c

@@ -309,6 +309,7 @@ static int print_filesystem_usage_overall(int fd, struct chunk_info *chunkinfo,
 		const char *path, unsigned unit_mode)
 {
 	struct btrfs_ioctl_space_args *sargs = NULL;
+	char *tmp;
 	int i;
 	int ret = 0;
 	int width = 10;		/* default 10 for human units */
@@ -492,11 +493,12 @@ static int print_filesystem_usage_overall(int fd, struct chunk_info *chunkinfo,
 	printf("    Global reserve:\t\t%*s\t(used: %s)\n", width,
 		pretty_size_mode(l_global_reserve, unit_mode),
 		pretty_size_mode(l_global_reserve_used, unit_mode));
-	if (btrfs_test_for_multiple_profiles_by_fd(fd) > 0)
-		printf("    Multiple profiles:\t\t%*s\n", width, "YES");
+	tmp = btrfs_test_for_multiple_profiles(fd);
+	if (tmp[0])
+		printf("    Multiple profiles:\t\t%*s\t(%s)\n", width, "yes", tmp);
 	else
 		printf("    Multiple profiles:\t\t%*s\n", width, "no");
-
+	free(tmp);
 
 exit:
 

common/utils.c

@@ -1755,7 +1755,8 @@ static char *sprint_profiles(u64 profiles)
 }
 
 static int btrfs_get_string_for_multiple_profiles(int fd, char **data_ret,
-		char **metadata_ret, char **mixed_ret, char **system_ret)
+		char **metadata_ret, char **mixed_ret, char **system_ret,
+		char **types_ret)
 {
 	int ret;
 	int i;
@@ -1798,22 +1799,49 @@ static int btrfs_get_string_for_multiple_profiles(int fd, char **data_ret,
 	*mixed_ret = sprint_profiles(mixed_profiles);
 	*system_ret = sprint_profiles(system_profiles);
 
+	if (types_ret) {
+		*types_ret = calloc(1, 64);
+		if (!*types_ret)
+			goto out;
+		if (*data_ret)
+			strcat(*types_ret, "data");
+		if (*metadata_ret) {
+			if ((*types_ret)[0])
+				strcat(*types_ret, ", ");
+			strcat(*types_ret, "metadata");
+		}
+		if (*mixed_ret) {
+			if ((*types_ret)[0])
+				strcat(*types_ret, ", ");
+			strcat(*types_ret, "data+metadata");
+		}
+		if (*system_ret) {
+			if ((*types_ret)[0])
+				strcat(*types_ret, ", ");
+			strcat(*types_ret, "system");
+		}
+	}
+
+out:
 	return *data_ret || *metadata_ret || *mixed_ret || *system_ret;
 }
 
-int btrfs_test_for_multiple_profiles_by_fd(int fd)
+/*
+ * Return string containing coma separated list of block group types that
+ * contain multiple profiles. The return value must be freed by the caller.
+ */
+char *btrfs_test_for_multiple_profiles(int fd)
 {
-	char *data, *metadata, *system, *mixed;
-	int ret;
+	char *data, *metadata, *system, *mixed, *types;
 
-	ret = btrfs_get_string_for_multiple_profiles(fd, &data, &metadata,
-			&mixed, &system);
+	btrfs_get_string_for_multiple_profiles(fd, &data, &metadata, &mixed,
+			&system, &types);
 	free(data);
 	free(metadata);
 	free(mixed);
 	free(system);
 
-	return ret;
+	return types;
 }
 
 int btrfs_warn_multiple_profiles(int fd)
@@ -1822,7 +1850,7 @@ int btrfs_warn_multiple_profiles(int fd)
 	char *data_prof, *mixed_prof, *metadata_prof, *system_prof;
 
 	ret = btrfs_get_string_for_multiple_profiles(fd, &data_prof,
-			&metadata_prof, &mixed_prof, &system_prof);
+			&metadata_prof, &mixed_prof, &system_prof, NULL);
 
 	if (ret != 1)
 		return ret;

common/utils.h

@@ -137,7 +137,7 @@ u64 rand_u64(void);
 unsigned int rand_range(unsigned int upper);
 void init_rand_seed(u64 seed);
 
-int btrfs_test_for_multiple_profiles_by_fd(int fd);
+char *btrfs_test_for_multiple_profiles(int fd);
 int btrfs_warn_multiple_profiles(int fd);
 
 #endif