forked from Imagelibrary/rtems
4dc0fd685b
With this in place, it is possible to fdopen a TCP stream socket and getc/fprintf/etc. on the STDIO stream!
120 lines
2.3 KiB
C
120 lines
2.3 KiB
C
/*
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* RTEMS Fake System Calls
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*
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* This file contains "fake" versions of the system call routines
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* which are reference by many libc implementations. Once a routine
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* has been implemented in terms of RTEMS services, it should be
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* taken out of this file.
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*
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* COPYRIGHT (c) 1989-1997.
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* On-Line Applications Research Corporation (OAR).
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* Copyright assigned to U.S. Government, 1994.
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.OARcorp.com/rtems/license.html.
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*
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* $Id$
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*
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <assert.h>
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#include <errno.h>
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#include <string.h>
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#include <stdio.h> /* only for puts */
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#include <rtems.h>
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#include <rtems/libio.h>
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#ifdef RTEMS_NEWLIB
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/*
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* fstat, stat, and isatty must lie consistently and report that everything
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* is a tty or stdout will not be line buffered.
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*/
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int __rtems_fstat(int _fd, struct stat* _sbuf)
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{
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#ifdef HAVE_BLKSIZE
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_sbuf->st_blksize = 0;
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#endif
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/*
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* For now assume stdin/stdout/stderr are always a TTY line
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*/
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if (_fd <= 2) {
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_sbuf->st_mode = S_IFCHR;
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} else {
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switch (rtems_file_descriptor_type (_fd)) {
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case RTEMS_FILE_DESCRIPTOR_TYPE_SOCKET:
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_sbuf->st_mode = S_IFSOCK;
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break;
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default:
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puts( "__rtems_fstat -- unknown socket type" );
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assert( 0 );
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}
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}
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return 0;
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}
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int __rtems_isatty(int _fd)
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{
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struct stat st;
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if (__rtems_fstat(_fd, &st) < 0)
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return 0;
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return S_ISCHR (st.st_mode);
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}
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#if !defined(RTEMS_UNIX)
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int stat( const char *path, struct stat *buf )
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{
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if ( strncmp( "/dev/", path, 5 ) ) {
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return -1;
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}
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return __rtems_fstat( 0, buf );
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}
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int link( const char *existing, const char *new )
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{
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/* always fail */
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return -1;
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}
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int unlink( const char *path )
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{
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/* always fail */
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return -1;
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}
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char *getcwd( char *_buf, size_t _size)
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{
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/* assert( FALSE ); */
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errno = ENOSYS;
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return 0;
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}
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int fork() {
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puts( "fork -- not supported!!!" );
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assert( 0 );
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errno = ENOSYS;
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return -1;
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}
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int execv(const char *_path, char * const _argv[] ) {
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puts( "execv -- not supported!!!" );
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assert( 0 );
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errno = ENOSYS;
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return -1;
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}
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int wait() {
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puts( "wait -- not supported!!!" );
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assert( 0 );
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errno = ENOSYS;
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return -1;
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}
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#endif
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#endif
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