util-linux: fix libmount build under uClibc

Patch taken from gentoo.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/util-linux/util-linux-2.20.1-sscanf-no-ms-as.patch

@@ -0,0 +1,87 @@
+[PATCH] Fix libmount build under uClibc
+
+Taken from gentoo-hardened:
+http://git.overlays.gentoo.org/gitweb/?p=proj/hardened-dev.git;a=commit;h=91879751
+
+For details, see https://bugs.gentoo.org/show_bug.cgi?id=406303
+
+Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
+diff -Naur util-linux-2.20.1.orig/libmount/src/tab_parse.c util-linux-2.20.1/libmount/src/tab_parse.c
+--- util-linux-2.20.1.orig/libmount/src/tab_parse.c	2011-12-12 20:51:06.646614964 -0500
++++ util-linux-2.20.1/libmount/src/tab_parse.c	2011-12-12 21:02:03.587865010 -0500
+@@ -51,19 +51,21 @@
+  */
+ static int mnt_parse_table_line(struct libmnt_fs *fs, char *s)
+ {
+-	int rc, n = 0;
+-	char *src, *fstype, *optstr;
+-
+-	rc = sscanf(s,	UL_SCNsA" "	/* (1) source */
+-			UL_SCNsA" "	/* (2) target */
+-			UL_SCNsA" "	/* (3) FS type */
+-			UL_SCNsA" "	/* (4) options */
++	int rc, n = 0, len = strlen (s) + 1;
++	char *src     = malloc (sizeof *src * len);
++  char *fstype  = malloc (sizeof *fstype * len);
++  char *optstr  = malloc (sizeof *optstr * len);
++
++	rc = sscanf(s,	"%s"" "	/* (1) source */
++			"%s"" "	/* (2) target */
++			"%s"" "	/* (3) FS type */
++			"%s"" "	/* (4) options */
+ 			"%n",		/* byte count */
+ 
+-			&src,
+-			&fs->target,
+-			&fstype,
+-			&optstr,
++			src,
++			fs->target,
++			fstype,
++			optstr,
+ 			&n);
+ 
+ 	if (rc == 4) {
+@@ -108,16 +110,20 @@
+  */
+ static int mnt_parse_mountinfo_line(struct libmnt_fs *fs, char *s)
+ {
+-	int rc, end = 0;
++	int rc, end = 0, len = strlen (s) + 1;
+ 	unsigned int maj, min;
+ 	char *fstype, *src, *p;
+ 
++  fs->root        = malloc (sizeof *fs->root * len);
++  fs->target      = malloc (sizeof *fs->target * len);
++  fs->vfs_optstr  = malloc (sizeof *fs->vfs_optstr * len);
++
+ 	rc = sscanf(s,	"%u "		/* (1) id */
+ 			"%u "		/* (2) parent */
+ 			"%u:%u "	/* (3) maj:min */
+-			UL_SCNsA" "	/* (4) mountroot */
+-			UL_SCNsA" "	/* (5) target */
+-			UL_SCNsA	/* (6) vfs options (fs-independent) */
++			"%s"" "	/* (4) mountroot */
++			"%s"" "	/* (5) target */
++			"%s"	/* (6) vfs options (fs-independent) */
+ 			"%n",		/* number of read bytes */
+ 
+ 			&fs->id,
+@@ -139,9 +145,14 @@
+ 	}
+ 	s = p + 3;
+ 
+-	rc += sscanf(s,	UL_SCNsA" "	/* (8) FS type */
+-			UL_SCNsA" "	/* (9) source */
+-			UL_SCNsA,	/* (10) fs options (fs specific) */
++  len           = strlen (s) + 1;
++	fstype        = malloc (sizeof *fstype * len);
++  src           = malloc (sizeof *src * len);
++  fs->fs_optstr = malloc (sizeof *fs->fs_optstr * len);
++
++	rc += sscanf(s,	"%s"" "	/* (8) FS type */
++			"%s"" "	/* (9) source */
++			"%s",	/* (10) fs options (fs specific) */
+ 
+ 			&fstype,
+ 			&src,