user/libc: execv()

2 files changed, 18 insertions, 0 deletions

diff --git a/src/user/lib/include/unistd.h b/src/user/lib/include/unistd.h
index b825e45..4f367ca 100644
--- a/src/user/lib/include/unistd.h
+++ b/src/user/lib/include/unistd.h
@@ -4,3 +4,5 @@
 int fork(void);
 int close(handle_t h);
 _Noreturn void exit(int);
+
+int execv(const char *path, char *const argv[]);
diff --git a/src/user/lib/stdlib.c b/src/user/lib/stdlib.c
index 068635b..179bd8f 100644
--- a/src/user/lib/stdlib.c
+++ b/src/user/lib/stdlib.c
@@ -1,5 +1,8 @@
 #include <camellia/syscalls.h>
+#include <errno.h>
+#include <stdio.h>
 #include <unistd.h>
+#include <user/lib/elfload.h>
 
 int errno = 0;
 
@@ -14,3 +17,16 @@ int close(handle_t h) {
 _Noreturn void exit(int c) {
 	_syscall_exit(c);
 }
+
+int execv(const char *path, char *const argv[]) {
+	(void)argv;
+
+	FILE *file = fopen(path, "r");
+	if (!file)
+		return -1;
+
+	elf_execf(file);
+	fclose(file);
+	errno = EINVAL;
+	return -1;
+}