diff options
| author | Karel Zak | 2015-06-15 14:54:15 +0200 |
|---|---|---|
| committer | Karel Zak | 2015-06-15 14:54:15 +0200 |
| commit | 2cde9865c27248bb1f7685b66a0a5830884f5869 (patch) | |
| tree | 342a11707890183cd35573556f7ce7f4544c253b /lib/loopdev.c | |
| parent | tests: add JSON sfdisk dumps (diff) | |
| download | kernel-qcow2-util-linux-2cde9865c27248bb1f7685b66a0a5830884f5869.tar.gz kernel-qcow2-util-linux-2cde9865c27248bb1f7685b66a0a5830884f5869.tar.xz kernel-qcow2-util-linux-2cde9865c27248bb1f7685b66a0a5830884f5869.zip | |
losetup: be careful with errno
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'lib/loopdev.c')
| -rw-r--r-- | lib/loopdev.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/loopdev.c b/lib/loopdev.c index a049ffa52..fe047cdcf 100644 --- a/lib/loopdev.c +++ b/lib/loopdev.c @@ -1193,6 +1193,7 @@ static int loopcxt_check_size(struct loopdev_cxt *lc, int file_fd) int loopcxt_setup_device(struct loopdev_cxt *lc) { int file_fd, dev_fd, mode = O_RDWR, rc = -1, cnt = 0; + int errsv = 0; if (!lc || !*lc->device || !lc->filename) return -EINVAL; @@ -1257,6 +1258,7 @@ int loopcxt_setup_device(struct loopdev_cxt *lc) */ if (ioctl(dev_fd, LOOP_SET_FD, file_fd) < 0) { rc = -errno; + errsv = errno; DBG(SETUP, ul_debugobj(lc, "LOOP_SET_FD failed: %m")); goto err; } @@ -1264,6 +1266,8 @@ int loopcxt_setup_device(struct loopdev_cxt *lc) DBG(SETUP, ul_debugobj(lc, "LOOP_SET_FD: OK")); if (ioctl(dev_fd, LOOP_SET_STATUS64, &lc->info)) { + rc = -errno; + errsv = errno; DBG(SETUP, ul_debugobj(lc, "LOOP_SET_STATUS64 failed: %m")); goto err; } @@ -1286,6 +1290,8 @@ err: close(file_fd); if (dev_fd >= 0 && rc != -EBUSY) ioctl(dev_fd, LOOP_CLR_FD, 0); + if (errsv) + errno = errsv; DBG(SETUP, ul_debugobj(lc, "failed [rc=%d]", rc)); return rc; |