usr: libc: Add strdup()

- Implement the strdup() string routine to duplicate strings in a new
  buffer.

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/libc/include/string.h b/lib/libc/include/string.h
index 50981c4..4ab1e45 100644
--- a/lib/libc/include/string.h
+++ b/lib/libc/include/string.h
@@ -35,6 +35,7 @@
 
 size_t strlen(const char *s);
 char *strtok(char *s, const char *delim);
+char *strdup(const char *s);
 
 void *memset(void *dst, int c, size_t n);
 int memcmp(const void *s1, const void *s2, size_t n);