diff options
Diffstat (limited to 'release/src/router/busybox/libbb/full_write.c')
| -rw-r--r-- | release/src/router/busybox/libbb/full_write.c | 56 |
1 files changed, 16 insertions, 40 deletions
diff --git a/release/src/router/busybox/libbb/full_write.c b/release/src/router/busybox/libbb/full_write.c index dc9937fa..f353b7d5 100644 --- a/release/src/router/busybox/libbb/full_write.c +++ b/release/src/router/busybox/libbb/full_write.c @@ -2,31 +2,11 @@ /* * Utility routines. * - * Copyright (C) tons of folks. Tracking down who wrote what - * isn't something I'm going to worry about... If you wrote something - * here, please feel free to acknowledge your work. - * - * 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 - * - * Based in part on code from sash, Copyright (c) 1999 by David I. Bell - * Permission has been granted to redistribute this code under the GPL. + * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> * + * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ -#include <stdio.h> -#include <unistd.h> #include "libbb.h" /* @@ -34,33 +14,29 @@ * This does multiple writes as necessary. * Returns the amount written, or -1 on an error. */ -int full_write(int fd, const char *buf, int len) +ssize_t FAST_FUNC full_write(int fd, const void *buf, size_t len) { - int cc; - int total; + ssize_t cc; + ssize_t total; total = 0; - while (len > 0) { - cc = write(fd, buf, len); + while (len) { + cc = safe_write(fd, buf, len); - if (cc < 0) - return -1; + if (cc < 0) { + if (total) { + /* we already wrote some! */ + /* user can do another write to know the error code */ + return total; + } + return cc; /* write() returns -1 on failure. */ + } - buf += cc; total += cc; + buf = ((const char *)buf) + cc; len -= cc; } return total; } - - -/* END CODE */ -/* -Local Variables: -c-file-style: "linux" -c-basic-offset: 4 -tab-width: 4 -End: -*/ |