3
0
forked from pool/util-linux
Adrian Schröter 2008-02-10 16:59:08 +00:00 committed by Git OBS Bridge
parent df46cf17c7
commit 2645a63ffb

View File

@ -1,112 +0,0 @@
From db6041b3a569d78f5716baa5a134a3a857014337 Mon Sep 17 00:00:00 2001
From: Karel Zak <kzak@redhat.com>
Date: Wed, 30 May 2007 13:22:51 +0200
Subject: [PATCH] mount: automatically reinitialize swap with old swsuspend data
We have to reinitialize swap area with old (=useless) software suspend
data. The problem is that if we don't do it, then we get data
corruption the next time with suspended on.
Signed-off-by: Karel Zak <kzak@redhat.com>
---
mount/swapon.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 63 insertions(+), 0 deletions(-)
diff --git a/mount/swapon.c b/mount/swapon.c
index ed91afc..3f9b442 100644
--- a/mount/swapon.c
+++ b/mount/swapon.c
@@ -10,6 +10,9 @@
#include <errno.h>
#include <sys/stat.h>
#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <fcntl.h>
#include "xmalloc.h"
#include "swap_constants.h"
#include "nls.h"
@@ -17,6 +20,8 @@
#include "realpath.h"
#include "mount_paths.h"
+#define PATH_MKSWAP "/sbin/mkswap"
+
#ifdef HAVE_SYS_SWAP_H
# include <sys/swap.h>
#endif
@@ -158,6 +163,52 @@ display_summary(void)
}
static int
+swap_is_swsuspend(const char *device) {
+ const char *type = fsprobe_get_fstype_by_devname(device);
+
+ return (type && strcmp(type, "swsuspend") == 0) ? 1 : 0;
+}
+
+/* calls mkswap */
+static int
+swap_reinitialize(const char *device) {
+ const char *label = fsprobe_get_label_by_devname(device);
+ pid_t pid;
+ int status, ret;
+
+ switch((pid=fork())) {
+ case -1: /* fork error */
+ fprintf(stderr, _("%s: cannot fork: %s\n"),
+ progname, strerror(errno));
+ return -1;
+
+ case 0: /* child */
+ if (label && *label)
+ execl(PATH_MKSWAP, PATH_MKSWAP, "-L", label, device, NULL);
+ else
+ execl(PATH_MKSWAP, PATH_MKSWAP, device, NULL);
+ exit(1); /* error */
+
+ default: /* parent */
+ do {
+ if ((ret = waitpid(pid, &status, 0)) < 0
+ && errno == EINTR)
+ continue;
+ else if (ret < 0) {
+ fprintf(stderr, _("%s: waitpid: %s\n"),
+ progname, strerror(errno));
+ return -1;
+ }
+ } while (0);
+
+ /* mkswap returns: 0=suss, 1=error */
+ if (WIFEXITED(status) && WEXITSTATUS(status)==0)
+ return 0; /* ok */
+ }
+ return -1; /* error */
+}
+
+static int
do_swapon(const char *orig_special, int prio, int canonic) {
int status;
struct stat st;
@@ -179,6 +230,18 @@ do_swapon(const char *orig_special, int prio, int canonic) {
return -1;
}
+ /* We have to reinitialize swap with old (=useless) software suspend
+ * data. The problem is that if we don't do it, then we get data
+ * corruption the next time with suspended on.
+ */
+ if (swap_is_swsuspend(special)) {
+ fprintf(stdout, _("%s: %s: software suspend data detected. "
+ "Reinitializing the swap.\n"),
+ progname, special);
+ if (swap_reinitialize(special) < 0)
+ return -1;
+ }
+
/* people generally dislike this warning - now it is printed
only when `verbose' is set */
if (verbose) {
--
1.5.2.2