The TREE_SEARCH ioctl is root-only, FS_INFO will be available for non-root users with an updated kernel, let the user know.
Signed-off-by: David Sterba <[email protected]> --- cmds-fi-disk_usage.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/cmds-fi-disk_usage.c b/cmds-fi-disk_usage.c index 17202de1b6e8..64c85acafd51 100644 --- a/cmds-fi-disk_usage.c +++ b/cmds-fi-disk_usage.c @@ -171,6 +171,12 @@ int load_chunk_info(int fd, struct chunk_info **info_ptr, int *info_count) while (1) { ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args); e = errno; + if (ret == -EPERM) { + fprintf(stderr, + "ERROR: can't read detailed chunk info from ioctl(TREE_SEARCH), run as root\n"); + return 0; + } + if (ret < 0) { fprintf(stderr, "ERROR: can't perform the search - %s\n", @@ -461,6 +467,10 @@ int load_device_info(int fd, struct device_info **device_info_ptr, *device_info_ptr = 0; ret = ioctl(fd, BTRFS_IOC_FS_INFO, &fi_args); + if (ret == -EPERM) { + fprintf(stderr, "ERROR: can't get filesystem info from ioctl(FS_INFO), run as root\n"); + return -1; + } if (ret < 0) { fprintf(stderr, "ERROR: cannot get filesystem info\n"); return -1; -- 1.9.0 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
