Attachment 294292 Details for Bug 421761 – Proposed patch to fix the problem

[patch] Proposed patch to fix the problem

421761.gfs_tool.deviceid.patch (text/plain), 2.43 KB, created by Robert Peterson on 2008-02-08 00:09:03 UTC

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Creator: Robert Peterson

Created: 2008-02-08 00:09:03 UTC

Size: 2.43 KB

patch

obsolete

>Index: util.c
>===================================================================
>RCS file: /cvs/cluster/cluster/gfs/gfs_tool/util.c,v
>retrieving revision 1.1.2.1
>diff -w -u -p -p -u -r1.1.2.1 util.c
>--- util.c	2 Feb 2005 00:24:58 -0000	1.1.2.1
>+++ util.c	8 Feb 2008 00:05:43 -0000
>@@ -122,52 +122,6 @@ str2lines(char *str)
> }
> 
> /**
>- * do_basename - Create dm-N style name for the device
>- * @device:
>- *
>- * Returns: Pointer to dm name or basename
>- */
>-
>-static char *
>-do_basename(char *device)
>-{
>-	FILE *file;
>-	int found = FALSE;
>-	char line[256], major_name[256];
>-	unsigned int major_number;
>-	struct stat st;
>-
>-	file = fopen("/proc/devices", "r");
>-	if (!file)
>-		goto punt;
>-
>-	while (fgets(line, 256, file)) {
>-		if (sscanf(line, "%u %s", &major_number, major_name) != 2)
>-			continue;
>-		if (strcmp(major_name, "device-mapper") != 0)
>-			continue;
>-		found = TRUE;
>-		break;
>-	}
>-
>-	fclose(file);
>-
>-	if (!found)
>-		goto punt;
>-
>-	if (stat(device, &st))
>-		goto punt;
>-	if (major(st.st_rdev) == major_number) {
>-		static char realname[16];
>-		snprintf(realname, 16, "dm-%u", minor(st.st_rdev));
>-		return realname;
>-	}
>-
>- punt:
>-	return basename(device);
>-}
>-
>-/**
>  * mp2cookie - Find the cookie for a filesystem given its mountpoint
>  * @mp:
>  * @ioctl_ok: If this is FALSE, it's not acceptable to open() the mountpoint
>@@ -181,9 +135,9 @@ mp2cookie(char *mp, int ioctl_ok)
> 	char *cookie;
> 	char *list, **lines;
> 	FILE *file;
>-	char line[256], device[256];
>-	char *dev = NULL;
>+	char line[256], device[256], dev_id[256];
> 	unsigned int x;
>+	struct stat st;
> 
> 	cookie = malloc(256);
> 	if (!cookie)
>@@ -196,6 +150,7 @@ mp2cookie(char *mp, int ioctl_ok)
> 		die("can't open /proc/mounts: %s\n",
> 		    strerror(errno));
> 
>+	memset(dev_id, 0, sizeof(dev_id));
> 	while (fgets(line, 256, file)) {
> 		char path[256], type[256];
> 
>@@ -206,18 +161,19 @@ mp2cookie(char *mp, int ioctl_ok)
> 		if (strcmp(type, "gfs"))
> 			die("%s is not a GFS filesystem\n", mp);
> 
>-		dev = do_basename(device);
>-
>+		if (stat(device, &st))
>+			continue;
>+		sprintf(dev_id, "%u:%u", major(st.st_rdev),minor(st.st_rdev));
> 		break;
> 	}
> 
> 	fclose(file);
> 
> 	for (x = 0; *lines[x]; x++) {
>-		char s_id[256];
>-		sscanf(lines[x], "%s %s", cookie, s_id);
>-		if (dev) {
>-			if (strcmp(s_id, dev) == 0)
>+		char device_id[256];
>+		sscanf(lines[x], "%s %s", cookie, device_id);
>+		if (dev_id[0]) {
>+			if (strcmp(device_id, dev_id) == 0)
> 				return cookie;
> 		} else {
> 			if (strcmp(cookie, mp) == 0)

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Attachments on bug 421761: 294292