46 lines
1.4 KiB
Diff
46 lines
1.4 KiB
Diff
|
From a6979c52fbff0e0961a0a0546c45bca11f6a0658 Mon Sep 17 00:00:00 2001
|
||
|
|
From: David Sterba <dsterba@suse.cz>
|
||
|
|
Date: Thu, 24 Apr 2014 15:21:16 +0200
|
||
|
|
Subject: [PATCH 32/42] btrfs-progs: check if we can't get info from ioctls due
|
||
|
|
to permissions
|
||
|
|
|
||
|
|
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 <dsterba@suse.cz>
|
||
|
|
---
|
||
|
|
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 023659daac0e..3fa2af004dc4 100644
|
||
|
|
--- a/cmds-fi-disk_usage.c
|
||
|
|
+++ b/cmds-fi-disk_usage.c
|
||
|
|
@@ -172,6 +172,12 @@ 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
|
||
|
|
|