[gentoo-commits] proj/rpm2targz:master commit in: /

["Mike Frysinger" <vapier@gentoo.org>]

commit:     a9f55f411d42fc5f60c099d7d9bc432f0be3852d
Author:     Christoph Junghans <ottxor <AT> gentoo <DOT> org>
AuthorDate: Thu May 17 04:43:06 2012 +0000
Commit:     Mike Frysinger <vapier <AT> gentoo <DOT> org>
CommitDate: Thu May 17 04:44:06 2012 +0000
URL:        http://git.overlays.gentoo.org/gitweb/?p=proj/rpm2targz.git;a=commit;h=a9f55f41

rpmoffset: provide a local memmem for non-glibc systems

URL: https://bugs.gentoo.org/397835
Reported-by: Christoph Junghans <ottxor <AT> gentoo.org>
Signed-off-by: Mike Frysinger <vapier <AT> gentoo.org>

---
 rpmoffset.c |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/rpmoffset.c b/rpmoffset.c
index 0a3c488..628af93 100644
--- a/rpmoffset.c
+++ b/rpmoffset.c
@@ -19,6 +19,26 @@
 # define BUFSIZ 8192
 #endif
 
+#if !defined(__GLIBC__)
+static void *rp_memmem(const void *buf, size_t buflen, const void *pattern, size_t len)
+{
+	char *bf = (char *)buf, *pt = (char *)pattern, *p = bf;
+
+	while (len <= (buflen - (p - bf))) {
+		if (NULL != (p = memchr(p, (int)(*pt), buflen - (p - bf)))) {
+			if (0 == memcmp(p, pattern, len))
+				return p;
+			else
+				++p;
+		}
+		else
+			break;
+	}
+	return NULL;
+}
+#define memmem(a,b,c,d) rp_memmem(a,b,c,d)
+#endif
+
 typedef struct {
 	const char *type;
 	const unsigned char *magic;