68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Utility routines.
|
|
*
|
|
* Copyright (C) 1999-2001 Erik Andersen <andersee@debian.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include "libbb.h"
|
|
|
|
|
|
extern size_t copyfd(int fd1, int fd2)
|
|
{
|
|
char buf[32768], *writebuf;
|
|
int status = TRUE;
|
|
size_t totalread = 0, bytesread, byteswritten;
|
|
|
|
while(status) {
|
|
bytesread = read(fd1, &buf, sizeof(buf));
|
|
if(bytesread == -1) {
|
|
error_msg("read: %s", strerror(errno));
|
|
status = FALSE;
|
|
break;
|
|
}
|
|
byteswritten = 0;
|
|
writebuf = buf;
|
|
while(bytesread) {
|
|
byteswritten = write( fd2, &writebuf, bytesread );
|
|
if(byteswritten == -1) {
|
|
error_msg("write: %s", strerror(errno));
|
|
status = FALSE;
|
|
break;
|
|
}
|
|
bytesread -= byteswritten;
|
|
writebuf += byteswritten;
|
|
}
|
|
}
|
|
if ( status == TRUE )
|
|
return totalread;
|
|
else
|
|
return -1;
|
|
}
|
|
|
|
/* END CODE */
|
|
/*
|
|
Local Variables:
|
|
c-file-style: "linux"
|
|
c-basic-offset: 4
|
|
tab-width: 4
|
|
End:
|
|
*/
|