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glibc  2.9
write.c
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00001 /* Copyright (C) 1991, 1995, 1996, 1997, 2002 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <sysdep.h>
00020 #include <errno.h>
00021 #include <unistd.h>
00022 #include <stddef.h>
00023 
00024 /* Write NBYTES of BUF to FD.  Return the number written, or -1.  */
00025 ssize_t
00026 __libc_write (int fd, const void *buf, size_t nbytes)
00027 {
00028   if (nbytes == 0)
00029     return 0;
00030   if (fd < 0)
00031     {
00032       __set_errno (EBADF);
00033       return -1;
00034     }
00035   if (buf == NULL)
00036     {
00037       __set_errno (EINVAL);
00038       return -1;
00039     }
00040 
00041   __set_errno (ENOSYS);
00042   return -1;
00043 }
00044 libc_hidden_def (__libc_write)
00045 stub_warning (write)
00046 
00047 weak_alias (__libc_write, __write)
00048 libc_hidden_weak (__write)
00049 weak_alias (__libc_write, write)
00050 #include <stub-tag.h>