The return values of ioctl weren't being printed to stderr on failure,
causing the command to silently fail, resulting in a very confused
user.
Signed-off-by: Ben Gamari <bgamari.f...@gmail.com>
---
btrfs_cmds.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/btrfs_cmds.c b/btrfs_cmds.c
index 8031c58..45da2bd 100644
--- a/btrfs_cmds.c
+++ b/btrfs_cmds.c
@@ -857,6 +857,7 @@ int do_df_filesystem(int nargs, char **argv)
ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
if (ret) {
+ fprintf(stderr, "ERROR: can't query '%s' for free space
(%s)\n", path, strerror(-ret));
free(sargs);
return ret;
}
@@ -875,6 +876,7 @@ int do_df_filesystem(int nargs, char **argv)
ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
if (ret) {
+ fprintf(stderr, "ERROR: can't query '%s' for free space
(%s)\n", path, strerror(-ret));
free(sargs);
return ret;
}
--
1.7.1
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