Add strdup

Signed-off-by: Mattias Andrée <maandree@kth.se>

3 files changed, 25 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index a9812c1..094eb7b 100644
--- a/Makefile
+++ b/Makefile
@@ -37,6 +37,7 @@ OBJ =\
 	setenv.o\
 	shutdown.o\
 	sockatmark.o\
+	strdup.o\
 	unsetenv.o
 
 LOBJ = $(OBJ:.o=.lo)
diff --git a/liberror-libc.h b/liberror-libc.h
index 8de6025..108ac19 100644
--- a/liberror-libc.h
+++ b/liberror-libc.h
@@ -58,6 +58,8 @@ int liberror_shutdown(int, int, const char *);
 void liberror_shutdown_failed(int, int, const char *);
 int liberror_sockatmark(int, const char *);
 void liberror_sockatmark_failed(int, const char *);
+char *liberror_strdup(const char *);
+void liberror_strdup_failed(const char *);
 int liberror_unsetenv(const char *);
 void liberror_unsetenv_failed(const char *);
 
diff --git a/strdup.c b/strdup.c
new file mode 100644
index 0000000..0b1c8ee
--- /dev/null
+++ b/strdup.c
@@ -0,0 +1,22 @@
+/* See LICENSE file for copyright and license details. */
+#include "internal.h"
+
+
+void
+liberror_strdup_failed(const char *s)
+{
+	liberror_set_error_errno(errno == ENOMEM ? "Out of memory" : "", "strdup", errno);
+	(void) s;
+}
+
+
+char *
+liberror_strdup(const char *s)
+{
+	char *ret = malloc(s);
+	if (ret)
+		return ret;
+	liberror_save_backtrace(NULL);
+	liberror_strdup_failed(s);
+	return NULL;
+}