Add btrfs filesystem info command, which is capable to show some
btrfs filesystem information.
---
cmds-filesystem.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 59 insertions(+)
diff --git a/cmds-filesystem.c b/cmds-filesystem.c
index 1f53d1c..9acc715 100644
--- a/cmds-filesystem.c
+++ b/cmds-filesystem.c
@@ -519,6 +519,64 @@ static int cmd_label(int argc, char **argv)
return get_label(argv[1]);
}
+static const char * const cmd_info_usage[] = {
+ "btrfs filesystem info <path>",
+ "Get filesystem information",
+ NULL
+};
+
+static int cmd_info(int argc, char **argv){
+
+ struct btrfs_ioctl_fs_info_args fi_args;
+ struct btrfs_ioctl_dev_info_args *di_ret=NULL;
+ int ret,i;
+ char uuidbuf[37];
+ int fd;
+
+ if( argc != 2){
+ fprintf(stderr, "ERROR: missing argument\n");
+ return 102;
+ }
+
+ fd = open_file_or_dir(argv[1]);
+ if( fd < 0 ){
+ fprintf(stderr, "ERROR: cannot open '%s'\n", argv[1]);
+ return 103;
+ }
+
+ ret = get_fs_info(fd, argv[1], &fi_args, &di_ret);
+ if( ret ){
+ int e = errno;
+ fprintf(stderr, "ERROR: cannot get information about '%s'\n",
+ argv[1]);
+ fprintf(stderr, "ERROR: errno=%d, error=%s\n",
+ e, strerror(e) );
+ close(fd);
+ if(di_ret != NULL )
+ free(di_ret);
+ return 104;
+ }
+
+ printf("Path: %s\n",argv[1]);
+ printf("Max ID: %llu\n", fi_args.max_id);
+ uuid_unparse(fi_args.fsid, uuidbuf);
+ printf("UUID: %s\n", uuidbuf);
+
+ printf("\nNum devices: %llu\n", fi_args.num_devices);
+ for( i = 0 ; i < fi_args.num_devices ; i++ ){
+ printf(" Dev ID: %llu\n", di_ret[i].devid);
+ uuid_unparse(di_ret[i].uuid, uuidbuf);
+ printf(" UUID: %s\n", uuidbuf);
+ printf(" Bytes used: %llu\n", di_ret[i].bytes_used );
+ printf(" Total bytes: %llu\n", di_ret[i].total_bytes );
+ printf(" Path: %s\n", di_ret[i].path);
+ }
+
+ close(fd);
+ free(di_ret);
+ return 0;
+}
+
const struct cmd_group filesystem_cmd_group = {
filesystem_cmd_group_usage, NULL, {
{ "df", cmd_df, cmd_df_usage, NULL, 0 },
@@ -528,6 +586,7 @@ const struct cmd_group filesystem_cmd_group = {
{ "balance", cmd_balance, NULL, &balance_cmd_group, 1 },
{ "resize", cmd_resize, cmd_resize_usage, NULL, 0 },
{ "label", cmd_label, cmd_label_usage, NULL, 0 },
+ { "info", cmd_info, cmd_info_usage, NULL, 0 },
{ 0, 0, 0, 0, 0 },
}
};
--
1.7.10
--
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