btrfs-progs: replace open_path_or_dev_mnt with btrfs_open_mnt_fd

For historical reasons the helpers [btrfs_]open_dir... return also
the 'DIR *dirstream' value when a directory is opened.

However this is never used. So avoid calling diropen() and return
only the fd.

Replace open_path_or_dev_mnt() with btrfs_open_mnt_fd() removing
any reference to the unused/useless dirstream variables.

Signed-off-by: Goffredo Baroncelli <kreijack@libero.it>
Signed-off-by: David Sterba <dsterba@suse.com>

cmds/device.c

@@ -717,7 +717,6 @@ static int cmd_device_stats(const struct cmd_struct *cmd, int argc, char **argv)
 	bool free_table = false;
 	bool tabular = false;
 	__u64 flags = 0;
-	DIR *dirstream = NULL;
 	struct format_ctx fctx;
 
 	optind = 0;
@@ -753,7 +752,7 @@ static int cmd_device_stats(const struct cmd_struct *cmd, int argc, char **argv)
 
 	dev_path = argv[optind];
 
-	fdmnt = open_path_or_dev_mnt(dev_path, &dirstream, 1);
+	fdmnt = btrfs_open_mnt_fd(dev_path, true);
 	if (fdmnt < 0)
 		return 1;
 
@@ -839,7 +838,7 @@ static int cmd_device_stats(const struct cmd_struct *cmd, int argc, char **argv)
 
 out:
 	free(di_args);
-	close_file_or_dir(fdmnt, dirstream);
+	close(fdmnt);
 	if (free_table)
 		table_free(table);
 

cmds/replace.c

@@ -136,7 +136,6 @@ static int cmd_replace_start(const struct cmd_struct *cmd,
 	bool force_using_targetdev = false;
 	u64 dstdev_block_count;
 	bool do_not_background = false;
-	DIR *dirstream = NULL;
 	u64 srcdev_size;
 	u64 dstdev_size;
 	bool enqueue = false;
@@ -184,7 +183,7 @@ static int cmd_replace_start(const struct cmd_struct *cmd,
 		return 1;
 	path = argv[optind + 2];
 
-	fdmnt = open_path_or_dev_mnt(path, &dirstream, 1);
+	fdmnt = btrfs_open_mnt_fd(path, true);
 	if (fdmnt < 0)
 		goto leave_with_error;
 
@@ -200,7 +199,7 @@ static int cmd_replace_start(const struct cmd_struct *cmd,
 	if (ret != 0) {
 		if (ret < 0)
 			error("unable to check status of exclusive operation: %m");
-		close_file_or_dir(fdmnt, dirstream);
+		close(fdmnt);
 		goto leave_with_error;
 	}
 
@@ -348,7 +347,7 @@ static int cmd_replace_start(const struct cmd_struct *cmd,
 			goto leave_with_error;
 		}
 	}
-	close_file_or_dir(fdmnt, dirstream);
+	close(fdmnt);
 	return 0;
 
 leave_with_error:

cmds/scrub.c

@@ -1269,7 +1269,6 @@ static int scrub_start(const struct cmd_struct *cmd, int argc, char **argv,
 	pthread_mutex_t spc_write_mutex = PTHREAD_MUTEX_INITIALIZER;
 	void *terr;
 	u64 devid;
-	DIR *dirstream = NULL;
 	bool force = false;
 	bool nothing_to_resume = false;
 
@@ -1326,7 +1325,7 @@ static int scrub_start(const struct cmd_struct *cmd, int argc, char **argv,
 
 	path = argv[optind];
 
-	fdmnt = open_path_or_dev_mnt(path, &dirstream, !do_quiet);
+	fdmnt = btrfs_open_mnt_fd(path, !do_quiet);
 	if (fdmnt < 0)
 		return 1;
 
@@ -1698,7 +1697,7 @@ out:
 		if (sock_path[0])
 			unlink(sock_path);
 	}
-	close_file_or_dir(fdmnt, dirstream);
+	close(fdmnt);
 
 	if (err)
 		return 1;
@@ -1751,7 +1750,6 @@ static int cmd_scrub_cancel(const struct cmd_struct *cmd, int argc, char **argv)
 	char *path;
 	int ret;
 	int fdmnt = -1;
-	DIR *dirstream = NULL;
 
 	clean_args_no_options(cmd, argc, argv);
 
@@ -1760,7 +1758,7 @@ static int cmd_scrub_cancel(const struct cmd_struct *cmd, int argc, char **argv)
 
 	path = argv[optind];
 
-	fdmnt = open_path_or_dev_mnt(path, &dirstream, 1);
+	fdmnt = btrfs_open_mnt_fd(path, true);
 	if (fdmnt < 0) {
 		ret = 1;
 		goto out;
@@ -1782,7 +1780,7 @@ static int cmd_scrub_cancel(const struct cmd_struct *cmd, int argc, char **argv)
 	pr_verbose(LOG_DEFAULT, "scrub cancelled\n");
 
 out:
-	close_file_or_dir(fdmnt, dirstream);
+	close(fdmnt);
 	return ret;
 }
 static DEFINE_SIMPLE_COMMAND(scrub_cancel, "cancel");
@@ -1841,7 +1839,6 @@ static int cmd_scrub_status(const struct cmd_struct *cmd, int argc, char **argv)
 	char fsid[BTRFS_UUID_UNPARSED_SIZE];
 	int fdres = -1;
 	int err = 0;
-	DIR *dirstream = NULL;
 
 	unit_mode = get_unit_mode_from_arg(&argc, argv, 0);
 
@@ -1864,7 +1861,7 @@ static int cmd_scrub_status(const struct cmd_struct *cmd, int argc, char **argv)
 
 	path = argv[optind];
 
-	fdmnt = open_path_or_dev_mnt(path, &dirstream, 1);
+	fdmnt = btrfs_open_mnt_fd(path, true);
 	if (fdmnt < 0)
 		return 1;
 
@@ -1978,7 +1975,7 @@ out:
 	free(si_args);
 	if (fdres > -1)
 		close(fdres);
-	close_file_or_dir(fdmnt, dirstream);
+	close(fdmnt);
 
 	return !!err;
 }