From b49103ed47580ecc94969d00ff4ebd5101fa53fd Mon Sep 17 00:00:00 2001
From: Karel Zak
Date: Thu, 15 Jul 2010 16:00:42 +0200
Subject: libmount: add {start,end}swith() functions

Signed-off-by: Karel Zak <kzak@redhat.com>
---
 shlibs/mount/src/Makefile.am |  3 ++-
 shlibs/mount/src/mountP.h    |  3 +++
 shlibs/mount/src/utils.c     | 52 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 57 insertions(+), 1 deletion(-)

diff --git a/shlibs/mount/src/Makefile.am b/shlibs/mount/src/Makefile.am
index 0494a7a04..37a5177e6 100644
--- a/shlibs/mount/src/Makefile.am
+++ b/shlibs/mount/src/Makefile.am
@@ -16,7 +16,8 @@ libmount_la_SOURCES =	mountP.h version.c utils.c test.c init.c cache.c \
 			$(top_srcdir)/lib/at.c \
 			$(top_srcdir)/include/list.h \
 			$(top_srcdir)/lib/mangle.c \
-			$(top_srcdir)/lib/canonicalize.c
+			$(top_srcdir)/lib/canonicalize.c \
+			$(top_srcdir)/lib/strutils.c
 
 nodist_libmount_la_SOURCES = mountP.h
 
diff --git a/shlibs/mount/src/mountP.h b/shlibs/mount/src/mountP.h
index 1de13917f..04876a0bf 100644
--- a/shlibs/mount/src/mountP.h
+++ b/shlibs/mount/src/mountP.h
@@ -67,6 +67,9 @@ extern int mnt_run_test(struct mtest *tests, int argc, char *argv[]);
 
 /* utils.c */
 extern char *mnt_getenv_safe(const char *arg);
+extern int endswith(const char *s, const char *sx);
+extern int startswith(const char *s, const char *sx);
+
 extern char *mnt_get_username(const uid_t uid);
 extern int mnt_has_regular_mtab(void);
 
diff --git a/shlibs/mount/src/utils.c b/shlibs/mount/src/utils.c
index 67b00c316..eb183ee0f 100644
--- a/shlibs/mount/src/utils.c
+++ b/shlibs/mount/src/utils.c
@@ -28,6 +28,7 @@
 #include <fcntl.h>
 #include <pwd.h>
 
+#include "strutils.h"
 #include "pathnames.h"
 #include "mountP.h"
 
@@ -52,6 +53,37 @@ char *mnt_getenv_safe(const char *arg)
 #endif
 }
 
+int endswith(const char *s, const char *sx)
+{
+	ssize_t off;
+
+	assert(s);
+	assert(sx);
+
+	off = strlen(s);
+	if (!off)
+		return 0;
+	off -= strlen(sx);
+	if (off < 0)
+		return 0;
+
+        return !strcmp(s + off, sx);
+}
+
+int startswith(const char *s, const char *sx)
+{
+	size_t off;
+
+	assert(s);
+	assert(sx);
+
+	off = strlen(sx);
+	if (!off)
+		return 0;
+
+        return !strncmp(s, sx, off);
+}
+
 /**
  * mnt_fstype_is_pseudofs:
  * @type: filesystem name
@@ -318,12 +350,32 @@ int test_match_options(struct mtest *ts, int argc, char *argv[])
 	return 0;
 }
 
+int test_startswith(struct mtest *ts, int argc, char *argv[])
+{
+	char *optstr = argv[1];
+	char *pattern = argv[2];
+
+	printf("%s\n", startswith(optstr, pattern) ? "YES" : "NOT");
+	return 0;
+}
+
+int test_endswith(struct mtest *ts, int argc, char *argv[])
+{
+	char *optstr = argv[1];
+	char *pattern = argv[2];
+
+	printf("%s\n", endswith(optstr, pattern) ? "YES" : "NOT");
+	return 0;
+}
+
 
 int main(int argc, char *argv[])
 {
 	struct mtest tss[] = {
 	{ "--match-fstype",  test_match_fstype,    "<type> <pattern>     FS types matching" },
 	{ "--match-options", test_match_options,   "<options> <pattern>  options matching" },
+	{ "--starts-with",   test_startswith,      "<string> <prefix>" },
+	{ "--ends-with",     test_endswith,        "<string> <prefix>" },
 	{ NULL }
 	};
 
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