filefrag: Fix error checking for the fiemap ioctl
Thanks to Peng Tao for reporting this problem.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/misc/filefrag.c b/misc/filefrag.c
index 80ac05c..7095949 100644
--- a/misc/filefrag.c
+++ b/misc/filefrag.c
@@ -201,15 +201,14 @@
fiemap->fm_flags = flags;
fiemap->fm_extent_count = count;
rc = ioctl(fd, FS_IOC_FIEMAP, (unsigned long) fiemap);
- if (rc == -EBADR) {
- if (fiemap_incompat_printed == 0) {
+ if (rc < 0) {
+ if (errno == EBADR && fiemap_incompat_printed == 0) {
printf("FIEMAP failed with unsupported "
"flags %x\n", fiemap->fm_flags);
fiemap_incompat_printed = 1;
}
- }
- if (rc)
return rc;
+ }
if (!verbose) {
*num_extents = fiemap->fm_mapped_extents;