From 04e271786fa45b9d618e508571961921429fe4a5 Mon Sep 17 00:00:00 2001 From: Wang Shilong Date: Mon, 7 Oct 2013 15:21:38 +0800 Subject: Btrfs-progs: introduces '-p' option to print the ID of the parent qgroups This patch introduces '-p' option to print the ID of the parent qgroups. You may use it like: btrfs qgroup show -p For Example: qgroupid(2/0) / \ / \ / \ qgroupid(1/0) qgroupid(1/1) \ / \ / qgroupid(0/1) If we use the command: btrfs qgroup show -p The result will output 0/1 -- -- 1/0,1/1 1/0 -- -- 2/0 1/1 -- -- 2/0 2/0 -- -- -- Signed-off-by: Wang Shilong Signed-off-by: Miao Xie Signed-off-by: David Sterba Signed-off-by: Chris Mason --- cmds-qgroup.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) (limited to 'cmds-qgroup.c') diff --git a/cmds-qgroup.c b/cmds-qgroup.c index d3c699f3..96098c12 100644 --- a/cmds-qgroup.c +++ b/cmds-qgroup.c @@ -202,22 +202,39 @@ static int cmd_qgroup_destroy(int argc, char **argv) } static const char * const cmd_qgroup_show_usage[] = { - "btrfs qgroup show ", + "btrfs qgroup show -p ", "Show all subvolume quota groups.", + "-p print parent qgroup id", NULL }; static int cmd_qgroup_show(int argc, char **argv) { + char *path; int ret = 0; int fd; int e; - char *path = argv[1]; DIR *dirstream = NULL; + int c; - if (check_argc_exact(argc, 2)) + optind = 1; + while (1) { + c = getopt(argc, argv, "p"); + if (c < 0) + break; + switch (c) { + case 'p': + btrfs_qgroup_setup_print_column( + BTRFS_QGROUP_PARENT); + break; + default: + usage(cmd_qgroup_show_usage); + } + } + if (check_argc_exact(argc - optind, 1)) usage(cmd_qgroup_show_usage); + path = argv[optind]; fd = open_file_or_dir(path, &dirstream); if (fd < 0) { fprintf(stderr, "ERROR: can't access '%s'\n", path); -- cgit v1.2.3