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From 44d733203637666926964957af7af23429ddcecf Mon Sep 17 00:00:00 2001
From: Gustavo Zacarias <gustavo@zacarias.com.ar>
Date: Mon, 18 Apr 2016 09:58:56 -0300
Subject: [PATCH] Fix libmount build under uClibc
See https://bugs.gentoo.org/show_bug.cgi?id=406303
http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/sys-apps/util-linux/files/util-linux-2.21.1-no-printf-alloc.patch?revision=1.2
[Gustavo: converted to git format for 2.28]
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
---
configure.ac | 1 -
libmount/src/tab_parse.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 52 insertions(+), 1 deletion(-)
diff --git a/configure.ac b/configure.ac
index 5a00403..3422f11 100644
--- a/configure.ac
+++ b/configure.ac
@@ -948,7 +948,6 @@ AC_ARG_ENABLE([libmount],
)
UL_BUILD_INIT([libmount])
UL_REQUIRES_BUILD([libmount], [libblkid])
-UL_REQUIRES_HAVE([libmount], [scanf_alloc_modifier], [scanf string alloc modifier])
AM_CONDITIONAL([BUILD_LIBMOUNT], [test "x$build_libmount" = xyes])
AM_CONDITIONAL([BUILD_LIBMOUNT_TESTS], [test "x$build_libmount" = xyes -a "x$enable_static" = xyes])
AS_IF([test "x$build_libmount" = xyes], [
diff --git a/libmount/src/tab_parse.c b/libmount/src/tab_parse.c
index 3f5e14a..2ff1795 100644
--- a/libmount/src/tab_parse.c
+++ b/libmount/src/tab_parse.c
@@ -39,6 +39,10 @@ static void parser_cleanup(struct libmnt_parser *pa)
memset(pa, 0, sizeof(*pa));
}
+#ifndef HAVE_SCANF_MS_MODIFIER
+# define UL_SCNsA "%s"
+#endif
+
static int next_number(char **s, int *num)
{
char *end = NULL;
@@ -69,16 +73,31 @@ static int mnt_parse_table_line(struct libmnt_fs *fs, char *s)
int rc, n = 0, xrc;
char *src = NULL, *fstype = NULL, *optstr = NULL;
+#ifndef HAVE_SCANF_MS_MODIFIER
+ size_t len = strlen(s) + 1;
+ src = malloc(len);
+ fstype = malloc(len);
+ fs->target = malloc(len);
+ optstr = malloc(len);
+#endif
+
rc = sscanf(s, UL_SCNsA" " /* (1) source */
UL_SCNsA" " /* (2) target */
UL_SCNsA" " /* (3) FS type */
UL_SCNsA" " /* (4) options */
"%n", /* byte count */
+#ifdef HAVE_SCANF_MS_MODIFIER
&src,
&fs->target,
&fstype,
&optstr,
+#else
+ src,
+ fs->target,
+ fstype,
+ optstr,
+#endif
&n);
xrc = rc;
@@ -144,6 +163,16 @@ static int mnt_parse_mountinfo_line(struct libmnt_fs *fs, char *s)
unsigned int maj, min;
char *fstype = NULL, *src = NULL, *p;
+#ifndef HAVE_SCANF_MS_MODIFIER
+ size_t len = strlen(s) + 1;
+ fs->root = malloc(len);
+ fs->target = malloc(len);
+ fs->vfs_optstr = malloc(len);
+ fs->fs_optstr = malloc(len);
+ fstype = malloc(len);
+ src = malloc(len);
+#endif
+
rc = sscanf(s, "%d " /* (1) id */
"%d " /* (2) parent */
"%u:%u " /* (3) maj:min */
@@ -155,9 +184,15 @@ static int mnt_parse_mountinfo_line(struct libmnt_fs *fs, char *s)
&fs->id,
&fs->parent,
&maj, &min,
+#ifdef HAVE_SCANF_MS_MODIFIER
&fs->root,
&fs->target,
&fs->vfs_optstr,
+#else
+ fs->root,
+ fs->target,
+ fs->vfs_optstr,
+#endif
&end);
if (rc >= 7 && end > 0)
@@ -177,9 +212,15 @@ static int mnt_parse_mountinfo_line(struct libmnt_fs *fs, char *s)
UL_SCNsA" " /* (9) source */
UL_SCNsA, /* (10) fs options (fs specific) */
+#ifdef HAVE_SCANF_MS_MODIFIER
&fstype,
&src,
&fs->fs_optstr);
+#else
+ fstype,
+ src,
+ fs->fs_optstr);
+#endif
if (rc >= 10) {
size_t sz;
@@ -298,14 +339,25 @@ static int mnt_parse_swaps_line(struct libmnt_fs *fs, char *s)
int rc;
char *src = NULL;
+#ifndef HAVE_SCANF_MS_MODIFIER
+ size_t len = strlen(s) + 1;
+ src = malloc(len);
+ fs->swaptype = malloc(len);
+#endif
+
rc = sscanf(s, UL_SCNsA" " /* (1) source */
UL_SCNsA" " /* (2) type */
"%ju" /* (3) size */
"%ju" /* (4) used */
"%d", /* priority */
+#ifdef HAVE_SCANF_MS_MODIFIER
&src,
&fs->swaptype,
+#else
+ src,
+ fs->swaptype,
+#endif
&fsz,
&usz,
&fs->priority);
--
2.7.3
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