minix/lib/libc/sys/read.c

   1 #include <sys/cdefs.h>
   2 #include <lib.h>
   3 #include "namespace.h"
   4
   5 #include <string.h>
   6 #include <unistd.h>
   7
   8 #ifdef __weak_alias
   9 __weak_alias(read, _read)
  10 #endif
  11
  12 ssize_t read(int fd, void *buffer, size_t nbytes)
  13 {
  14   message m;
  15
  16   memset(&m, 0, sizeof(m));
  17   m.m_lc_vfs_readwrite.fd = fd;
  18   m.m_lc_vfs_readwrite.len = nbytes;
  19   m.m_lc_vfs_readwrite.buf = (vir_bytes)buffer;
  20   m.m_lc_vfs_readwrite.cum_io = 0;
  21   return(_syscall(VFS_PROC_NR, VFS_READ, &m));
  22 }