From 8c831a69068a4b0b4c31cf2716d446a91b473509 Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Sat, 18 Mar 2023 09:13:31 +0100
Subject: [PATCH] libc: Add mknod()

---
 apps/hello.c            | 4 ++--
 libc/include/sys/stat.h | 3 +++
 libc/src/sys/stat.cpp   | 6 ++++++
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/apps/hello.c b/apps/hello.c
index 192b335a..cd338452 100644
--- a/apps/hello.c
+++ b/apps/hello.c
@@ -10,7 +10,7 @@ int main()
     printf("Hello world!\n");
 
     mkdir("/dev", 0755);
-    if (syscall(SYS_mknod, "/dev/console", 0666, makedev(1, 0)) < 0)
+    if (mknod("/dev/console", 0666, makedev(1, 0)) < 0)
     {
         perror("mknod");
         return 1;
@@ -19,6 +19,6 @@ int main()
     const char* str = "Hello from /dev!";
 
     FILE* f = fopen("/dev/console", "r+");
-    fwrite(str, 1, strlen(str), f);
+    if (f) fwrite(str, 1, strlen(str), f);
     if (f) fclose(f);
 }
diff --git a/libc/include/sys/stat.h b/libc/include/sys/stat.h
index dc89b780..1b77922d 100644
--- a/libc/include/sys/stat.h
+++ b/libc/include/sys/stat.h
@@ -14,6 +14,9 @@ extern "C"
     /* Create a directory. */
     int mkdir(const char* path, mode_t mode);
 
+    /* Create a special file. */
+    int mknod(const char* path, mode_t mode, dev_t dev);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/libc/src/sys/stat.cpp b/libc/src/sys/stat.cpp
index 1316d0a3..8775170d 100644
--- a/libc/src/sys/stat.cpp
+++ b/libc/src/sys/stat.cpp
@@ -10,4 +10,10 @@ extern "C"
         long rc = syscall(SYS_mkdir, path, mode);
         __errno_return(rc, int);
     }
+
+    int mknod(const char* path, mode_t mode, dev_t dev)
+    {
+        long rc = syscall(SYS_mknod, path, mode, dev);
+        __errno_return(rc, int);
+    }
 }