[Cluster-devel] cluster/gfs/gfs_mkfs main.c

[rohara at sourceware.org]

CVSROOT:	/cvs/cluster
Module name:	cluster
Changes by:	rohara at sourceware.org	2007-07-10 18:01:05

Modified files:
	gfs/gfs_mkfs   : main.c 

Log message:
	BZ 240584 - Check to see if device is mounted before creating filesystem.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/gfs/gfs_mkfs/main.c.diff?cvsroot=cluster&r1=1.6&r2=1.7

--- cluster/gfs/gfs_mkfs/main.c	2006/11/29 17:25:44	1.6
+++ cluster/gfs/gfs_mkfs/main.c	2007/07/10 18:01:01	1.7
@@ -22,6 +22,7 @@
 #include <sys/ioctl.h>
 #include <assert.h>
 #include <time.h>
+#include <mntent.h>
 
 #include "global.h"
 #include "gfs_ondisk.h"
@@ -243,6 +244,39 @@
 
 
 /**
+ * check_mount -
+ * @
+ *
+ */
+
+void check_mount(char *device)
+{
+	struct mntent *mnt;
+	FILE *fp;
+
+	if ((fp = setmntent("/proc/mounts", "r")) == NULL) {
+		die("error opening /proc/mounts");
+	}
+
+	while ((mnt = getmntent(fp)) != NULL) {
+		if (strcmp(device, mnt->mnt_fsname) == 0) {
+			printf("cannot create filesystem: ");
+			printf("%s appears to be mounted\n", device);
+			break;
+		}
+	}
+
+	endmntent(fp);
+
+	if (fp != NULL) {
+		exit(EXIT_FAILURE);
+	}
+
+	return;
+}
+
+
+/**
  * print_results - print out summary information
  * @comline: the command line
  *
@@ -307,6 +341,8 @@
 
 	decode_arguments(argc, argv, &comline);
 
+	check_mount(comline.device);
+
 	if (!comline.expert) {
 		char buf[256];
 		if (test_locking(comline.lockproto, comline.locktable, buf, 256))