[Minios-devel] [UNIKRAFT PATCH v2 02/10] lib/nolibc: Add strdup function

[Costin Lupu <costin.lupu@xxxxxxxxx>]

Shamelessly taken from Mini-OS.

Signed-off-by: Costin Lupu <costin.lupu@xxxxxxxxx>
---
 lib/nolibc/include/string.h |  1 +
 lib/nolibc/string.c         | 17 +++++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/lib/nolibc/include/string.h b/lib/nolibc/include/string.h
index 677f528..8674c77 100644
--- a/lib/nolibc/include/string.h
+++ b/lib/nolibc/include/string.h
@@ -57,6 +57,7 @@ size_t strlen(const char *str);
 const char *strchr(const char *str, int c);
 int strncmp(const char *str1, const char *str2, size_t len);
 int strcmp(const char *str1, const char *str2);
+char *strdup(const char *str);
 
 #ifdef __cplusplus
 }
diff --git a/lib/nolibc/string.c b/lib/nolibc/string.c
index bf89106..bf4ab50 100644
--- a/lib/nolibc/string.c
+++ b/lib/nolibc/string.c
@@ -33,6 +33,7 @@
  * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
  */
 
+#include <stdlib.h>
 #include <stdint.h>
 #include <string.h>
 #include <limits.h>
@@ -166,3 +167,19 @@ int strcmp(const char *str1, const char *str2)
 
        return __res;
 }
+
+char *strdup(const char *str)
+{
+       char *__res;
+       int __len;
+
+       __len = strlen(str);
+
+       __res = malloc(__len + 1);
+       if (!__res)
+               return NULL;
+
+       memcpy(__res, str, __len + 1);
+
+       return __res;
+}
-- 
2.11.0


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