util-linux: fix libmount build under uClibc

Patch taken from gentoo.

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

diff --git a/package/util-linux/util-linux-2.20.1-sscanf-no-ms-as.patch b/package/util-linux/util-linux-2.20.1-sscanf-no-ms-as.patch
new file mode 100644 (file)
index 0000000..5b0ac36
--- /dev/null
+++ b/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,