Add support for older C libraries that do not support latest POSIX standard (%as flags) #406303 by Ed Wildgoose.

(Portage version: 2.2.0_alpha100/cvs/Linux x86_64)

2 files changed, 217 insertions, 0 deletions

diff --git a/sys-apps/util-linux/files/util-linux-2.20.1-no-printf-alloc.patch b/sys-apps/util-linux/files/util-linux-2.20.1-no-printf-alloc.patch
new file mode 100644
index 000000000000..a390344e0dcd
--- /dev/null
+++ b/sys-apps/util-linux/files/util-linux-2.20.1-no-printf-alloc.patch
@@ -0,0 +1,110 @@
+for systems that don't support latest POSIX standard: %as
+
+https://bugs.gentoo.org/406303
+
+--- a/configure.ac
++++ b/configure.ac
+@@ -489,10 +489,6 @@ as)
+   AC_DEFINE([HAVE_SCANF_AS_MODIFIER], [1], [scanf %as modifier]) ;;
+ *)
+   AC_MSG_RESULT([no])
+-  if "x$build_libmount" = xyes; then
+-    AC_MSG_WARN([%as or %ms for sscanf() not found; do not build libmount])
+-    build_libmount=no
+-  fi
+ esac
+ 
+ 
+--- a/libmount/src/tab_parse.c
++++ b/libmount/src/tab_parse.c
+@@ -22,6 +22,10 @@
+ #include "pathnames.h"
+ #include "strutils.h"
+ 
++#ifndef HAVE_SCANF_MS_MODIFIER
++# define UL_SCNsA "%s"
++#endif
++
+ static inline char *skip_spaces(char *s)
+ {
+ 	assert(s);
+@@ -61,16 +65,31 @@ 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;
+ 
+@@ -136,6 +155,15 @@ 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);
++	fstype = malloc(len);
++	src = malloc(len);
++#endif
++
+ 	rc = sscanf(s,	"%u "		/* (1) id */
+ 			"%u "		/* (2) parent */
+ 			"%u:%u "	/* (3) maj:min */
+@@ -147,9 +175,15 @@ 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)
+@@ -167,9 +201,15 @@ 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) {
+ 		fs->flags |= MNT_FS_KERNEL;
diff --git a/sys-apps/util-linux/files/util-linux-2.21.1-no-printf-alloc.patch b/sys-apps/util-linux/files/util-linux-2.21.1-no-printf-alloc.patch
new file mode 100644
index 000000000000..268c8e12e2d6
--- /dev/null
+++ b/sys-apps/util-linux/files/util-linux-2.21.1-no-printf-alloc.patch
@@ -0,0 +1,107 @@
+for systems that don't support latest POSIX standard: %as
+
+https://bugs.gentoo.org/406303
+
+--- a/configure.ac
++++ b/configure.ac
+@@ -688,7 +688,6 @@ AC_ARG_ENABLE([libmount],
+ UL_BUILD_INIT([libmount])
+ UL_REQUIRES_LINUX([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)
+ 
+ AC_SUBST([LIBMOUNT_VERSION])
+--- a/libmount/src/tab_parse.c
++++ b/libmount/src/tab_parse.c
+@@ -22,6 +22,10 @@
+ #include "pathnames.h"
+ #include "strutils.h"
+ 
++#ifndef HAVE_SCANF_MS_MODIFIER
++# define UL_SCNsA "%s"
++#endif
++
+ static inline char *skip_spaces(char *s)
+ {
+ 	assert(s);
+@@ -61,16 +65,31 @@ 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;
+ 
+@@ -136,6 +155,15 @@ 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);
++	fstype = malloc(len);
++	src = malloc(len);
++#endif
++
+ 	rc = sscanf(s,	"%u "		/* (1) id */
+ 			"%u "		/* (2) parent */
+ 			"%u:%u "	/* (3) maj:min */
+@@ -147,9 +175,15 @@ 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)
+@@ -167,9 +201,15 @@ 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) {
+ 		fs->flags |= MNT_FS_KERNEL;