1 files changed, 16 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/process/fexecve.c b/libc-top-half/musl/src/process/fexecve.c
new file mode 100644
index 0000000..554c198
--- /dev/null
+++ b/libc-top-half/musl/src/process/fexecve.c
@@ -0,0 +1,16 @@
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include "syscall.h"
+
+int fexecve(int fd, char *const argv[], char *const envp[])
+{
+	int r = __syscall(SYS_execveat, fd, "", argv, envp, AT_EMPTY_PATH);
+	if (r != -ENOSYS) return __syscall_ret(r);
+	char buf[15 + 3*sizeof(int)];
+	__procfdname(buf, fd);
+	execve(buf, argv, envp);
+	if (errno == ENOENT) errno = EBADF;
+	return -1;
+}