Add mount point output for 'btrfs fi df'.
Also since the patch uses find_mount_root() to find mount point,
now 'btrfs fi df' can output more meaningful error message when given a
non-btrfs path.
Signed-off-by: Qu Wenruo <quwen...@cn.fujitsu.com>
---
v2:
Call realpath() before find_mount_root() to deal with relative path
---
cmds-filesystem.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/cmds-filesystem.c b/cmds-filesystem.c
index 0a9b62a..d76a1a5 100644
--- a/cmds-filesystem.c
+++ b/cmds-filesystem.c
@@ -187,12 +187,28 @@ static int cmd_filesystem_df(int argc, char **argv)
int ret;
int fd;
char *path;
+ char *real_path = NULL;
+ char *mount_point = NULL;
DIR *dirstream = NULL;
if (check_argc_exact(argc, 2))
usage(cmd_filesystem_df_usage);
path = argv[1];
+ real_path = realpath(path, NULL);
+ if (!real_path) {
+ fprintf(stderr, "ERROR: Failed to resolve real path for %s:
%s\n",
+ path, strerror(errno));
+ return 1;
+ }
+ ret = find_mount_root(real_path, &mount_point);
+ if (ret < 0) {
+ free(real_path);
+ return 1;
+ }
+ printf("Mounted on: %s\n", mount_point);
+ free(real_path);
+ free(mount_point);
fd = open_file_or_dir(path, &dirstream);
if (fd < 0) {
--
2.0.1
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