feat: implement readlink(2) readlinkat(2)

[lunaix-os.git] / lunaix-os / kernel / demos / dir_read.c

diff --git a/lunaix-os/kernel/demos/dir_read.c b/lunaix-os/kernel/demos/dir_read.c
index 7a63ba933d7c44469eedaee1de02b3655f66c2c3..a0ef65f41ab542b777ad3fbf3842d67603af6e2f 100644 (file)
--- a/lunaix-os/kernel/demos/dir_read.c
+++ b/lunaix-os/kernel/demos/dir_read.c
@@ -1,5 +1,6 @@
 #include <lunaix/dirent.h>
 #include <lunaix/fctrl.h>
+#include <lunaix/proc.h>
 #include <lunaix/syslog.h>
 
 LOG_MODULE("RDDIR")
@@ -7,9 +8,9 @@ LOG_MODULE("RDDIR")
 void
 _readdir_main()
 {
-    int fd = open("/dev/block", 0);
+    int fd = open("/dev/./../dev/.", 0);
     if (fd == -1) {
-        kprintf(KERROR "fail to open\n");
+        kprintf(KERROR "fail to open (%d)\n", geterrno());
         return;
     }
 
@@ -19,6 +20,17 @@ _readdir_main()
         kprintf(KINFO "%s\n", ent.d_name);
     }
 
+    char path[129];
+
+    int len = readlinkat(fd, ".", path, 128);
+    if (len < 0) {
+        kprintf(KERROR "fail to read (%d)\n", geterrno());
+    }
+
+    path[len] = 0;
+
+    kprintf("%s\n", path);
+
     close(fd);
 
     return;