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authorOlaf Hering <ohering@suse.de>2017-10-20 12:20:33 +0200
committerOlaf Hering <ohering@suse.de>2017-10-20 12:23:27 +0200
commit3ed38ad0e0cf91fe8d7718b854170daf61e6dadf (patch)
tree237b0f46eb981d89475b33188e5ce4e731a9ea8a
parente0716380ad8b6feef68340c2a3d844e16f9cb16c (diff)
Tools: hv: vss: Skip freezing filesystems backed by loop
-rw-r--r--tools/hv/hv_vss_daemon.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/hv/hv_vss_daemon.c b/tools/hv/hv_vss_daemon.c
index 7ba54195934c..b2b4ebffab8c 100644
--- a/tools/hv/hv_vss_daemon.c
+++ b/tools/hv/hv_vss_daemon.c
@@ -21,6 +21,7 @@
#include <sys/types.h>
#include <sys/poll.h>
#include <sys/ioctl.h>
+#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <mntent.h>
@@ -30,6 +31,7 @@
#include <ctype.h>
#include <errno.h>
#include <linux/fs.h>
+#include <linux/major.h>
#include <linux/hyperv.h>
#include <syslog.h>
#include <getopt.h>
@@ -70,6 +72,7 @@ static int vss_operate(int operation)
char match[] = "/dev/";
FILE *mounts;
struct mntent *ent;
+ struct stat sb;
char errdir[1024] = {0};
unsigned int cmd;
int error = 0, root_seen = 0, save_errno = 0;
@@ -92,6 +95,10 @@ static int vss_operate(int operation)
while ((ent = getmntent(mounts))) {
if (strncmp(ent->mnt_fsname, match, strlen(match)))
continue;
+ if (stat(ent->mnt_fsname, &sb) == -1)
+ continue;
+ if (S_ISBLK(sb.st_mode) && major(sb.st_rdev) == LOOP_MAJOR)
+ continue;
if (hasmntopt(ent, MNTOPT_RO) != NULL)
continue;
if (strcmp(ent->mnt_type, "vfat") == 0)