68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
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/* vi: set sw=4 ts=4: */
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/*
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* Utility routines.
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*
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* Copyright (C) 1999-2001 Erik Andersen <andersee@debian.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include "libbb.h"
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extern size_t copyfd(int fd1, int fd2)
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{
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char buf[32768], *writebuf;
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int status = TRUE;
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size_t totalread = 0, bytesread, byteswritten;
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while(status) {
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bytesread = read(fd1, &buf, sizeof(buf));
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if(bytesread == -1) {
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error_msg("read: %s", strerror(errno));
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status = FALSE;
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break;
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}
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byteswritten = 0;
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writebuf = buf;
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while(bytesread) {
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byteswritten = write( fd2, &writebuf, bytesread );
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if(byteswritten == -1) {
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error_msg("write: %s", strerror(errno));
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status = FALSE;
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break;
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}
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bytesread -= byteswritten;
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writebuf += byteswritten;
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}
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}
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if ( status == TRUE )
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return totalread;
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else
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return -1;
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}
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/* END CODE */
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/*
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Local Variables:
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c-file-style: "linux"
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c-basic-offset: 4
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tab-width: 4
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End:
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*/
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