[USER] Temporary write syscall

libc/file_io.c

@@ -0,0 +1,38 @@
+#include "syscalls.h"
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+#include <sys/uio.h>
+
+SYSCALL_DEF(ioctl)
+{
+  SYSCALL_INIT(int, fd, unsigned long, request);
+
+  if(fd == 1 && request == TIOCGWINSZ)
+  {
+    return 0;
+  }
+  kernel_debug("==> IOCTL - unsupported request:%lx\n", request);
+  return -1;
+}
+
+SYSCALL_DEF(writev)
+{
+  SYSCALL_INIT(int, fd, const struct iovec *, iov, int, iovcnt);
+
+  size_t len = 0;
+
+  for(int i=0; i < iovcnt; i++)
+  {
+    len += write(fd, iov[i].iov_base, iov[i].iov_len);
+  }
+
+  return (long)len;
+}
+
+SYSCALL_DEF(write)
+{
+  SYSCALL_INIT(int, fd, void *, buffer, size_t, nbyte);
+
+  return kernel_syscall(SYS_WRITE, fd, buffer, nbyte);
+}

libc/syscall_num.h

@@ -1,3 +1,4 @@
 #pragma once
 
+#define SYS_WRITE 0x001
 #define SYS_DEBUG 0x3FF