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author | Roland McGrath <roland@gnu.org> | 1995-02-18 01:27:10 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1995-02-18 01:27:10 +0000 |
commit | 28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch) | |
tree | 15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/standalone/write.c | |
download | glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.gz glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.xz glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.zip |
initial import
Diffstat (limited to 'sysdeps/standalone/write.c')
-rw-r--r-- | sysdeps/standalone/write.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/sysdeps/standalone/write.c b/sysdeps/standalone/write.c new file mode 100644 index 0000000000..f0ae3888f6 --- /dev/null +++ b/sysdeps/standalone/write.c @@ -0,0 +1,74 @@ +/* Copyright (C) 1994, 1995 Free Software Foundation, Inc. + Ported to standalone by Joel Sherrill jsherril@redstone-emh2.army.mil, + On-Line Applications Research Corporation. + +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#include <sysdep.h> +#include <errno.h> +#include <unistd.h> +#include <stddef.h> + +#include "filedesc.h" +#include <fcntl.h> +#include <standalone.h> + +/* Write NBYTES of BUF to FD. Return the number written, or -1. */ +ssize_t +DEFUN(__write, (fd, buf, nbytes), + int fd AND CONST PTR buf AND size_t nbytes) +{ + int count; + CONST char *data = buf; + + if (nbytes == 0) + return 0; + if ( !__FD_Is_valid( fd ) || !__FD_Table[ fd ].in_use ) + { + errno = EBADF; + return -1; + } + if (buf == NULL) + { + errno = EINVAL; + return -1; + } + + if ( !(__FD_Table[ fd ].flags & (O_WRONLY|O_RDWR)) ) /* is it writeable? */ + { + errno = EBADF; + return -1; + } + + /* + * All open file descriptors are mapped to the console. + */ + + for ( count=0 ; count != nbytes ; count++ ) { + if ( _Console_Putc(data[ count ]) == -1 ) + return -1; + if ( data[count] == '\n' && _Console_Putc('\r') == -1 ) + return -1; + } + + return count; +} + + +weak_alias (__write, write) |