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 a1972452ebf614e287556a9596d205664813b9b9..82e3ea32ec1b694b5e5729baa55e2c210ae94109 100644 (file)
--- a/lunaix-os/uprog/init.c
+++ b/lunaix-os/uprog/init.c
@@ -1,23 +1,39 @@
+#include <errno.h>

 #include <fcntl.h>
 #include <fcntl.h>

+#include <stdio.h>

 #include <sys/lunaix.h>
 #include <unistd.h>
 
 int
 main(int argc, const char** argv)
 {
 #include <sys/lunaix.h>
 #include <unistd.h>
 
 int
 main(int argc, const char** argv)
 {

-    int errno = 0;
+    int err = 0;

 
 

-    if ((errno = open("/dev/tty", 0))) {
+    if ((err = open("/dev/tty", 0)) < 0) {

         syslog(2, "fail to open tty (%d)\n", errno);
         return 0;
     }
 
         syslog(2, "fail to open tty (%d)\n", errno);
         return 0;
     }
 

-    if ((errno = dup(errno))) {
+    if ((err = dup(err)) < 0) {

         syslog(2, "fail to setup tty i/o (%d)\n", errno);
         return 0;
     }
 
         syslog(2, "fail to setup tty i/o (%d)\n", errno);
         return 0;
     }
 

-    syslog(0, "user space!\n");
+    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())) {
+        err = execve("/mnt/lunaix-os/usr/sh", NULL, NULL);
+        printf("fail to execute (%d)\n", errno);
+        _exit(err);
+    }
+
+    waitpid(pid, NULL, 0);

 
     return 0;
 }
\ No newline at end of file
 
     return 0;
 }
\ No newline at end of file