feat: refine symbolic link support.

[lunaix-os.git] / lunaix-os / uprog / init.c

diff --git a/lunaix-os/uprog/init.c b/lunaix-os/uprog/init.c
index a7265c0e350c4c9b54187d5d7a2b94d77c8faf8b..82e3ea32ec1b694b5e5729baa55e2c210ae94109 100644 (file)
--- a/lunaix-os/uprog/init.c
+++ b/lunaix-os/uprog/init.c
@@ -1,3 +1,4 @@
+#include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <sys/lunaix.h>
@@ -6,24 +7,29 @@
 int
 main(int argc, const char** argv)
 {
-    int errno = 0;
+    int err = 0;
 
-    if ((errno = open("/dev/tty", 0)) < 0) {
+    if ((err = open("/dev/tty", 0)) < 0) {
         syslog(2, "fail to open tty (%d)\n", errno);
         return 0;
     }
 
-    if ((errno = dup(errno)) < 0) {
+    if ((err = dup(err)) < 0) {
         syslog(2, "fail to setup tty i/o (%d)\n", errno);
         return 0;
     }
 
     printf("(%p) user space!\n", (void*)main);
 
+    if ((err = symlink("/usr", "/mnt/lunaix-os/usr"))) {
+        syslog(2, "symlink /usr:/mnt/lunaix-os/usr (%d)\n", errno);
+        return 0;
+    }
+
     pid_t pid;
     if (!(pid = fork())) {
-        int err = execve("/mnt/lunaix-os/usr/sh", NULL, NULL);
-        printf("fail to execute (%d)\n", err);
+        err = execve("/mnt/lunaix-os/usr/sh", NULL, NULL);
+        printf("fail to execute (%d)\n", errno);
         _exit(err);
     }