Keith Winstein
56 lines
2.0 KiB
C++
56 lines
2.0 KiB
C++
/*
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Mosh: the mobile shell
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Copyright 2012 Keith Winstein
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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 3 of the License, or
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(at your option) any later version.
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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
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GNU General Public License for more details.
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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, see <http://www.gnu.org/licenses/>.
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In addition, as a special exception, the copyright holders give
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permission to link the code of portions of this program with the
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OpenSSL library under certain conditions as described in each
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individual source file, and distribute linked combinations including
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the two.
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You must obey the GNU General Public License in all respects for all
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of the code used other than OpenSSL. If you modify file(s) with this
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exception, you may extend this exception to your version of the
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file(s), but you are not obligated to do so. If you do not wish to do
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so, delete this exception statement from your version. If you delete
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this exception statement from all source files in the program, then
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also delete it here.
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*/
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#include <unistd.h>
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#include <string.h>
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#include <stdio.h>
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#include "swrite.h"
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int swrite( int fd, const char *str, ssize_t len )
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{
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ssize_t total_bytes_written = 0;
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ssize_t bytes_to_write = ( len >= 0 ) ? len : (ssize_t) strlen( str );
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while ( total_bytes_written < bytes_to_write ) {
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ssize_t bytes_written = write( fd, str + total_bytes_written,
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bytes_to_write - total_bytes_written );
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if ( bytes_written <= 0 ) {
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perror( "write" );
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return -1;
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} else {
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total_bytes_written += bytes_written;
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}
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}
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return 0;
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}
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