Files
libguestfs/daemon/fallocate.c
Jim Meyering 84fc760439 generator.ml: use new "Pathname" designation
Nearly every file-related function in daemons/*.c is affected:
Remove this pair of statements from each affected do_* function:
-  NEED_ROOT (return -1);
-  ABS_PATH (dir, return -1);
and change the type of the corresponding parameter to "const char *".
* src/generator.ml: Emit NEED_ROOT just once, even when there are two or
more Pathname args.
2009-08-13 14:45:34 +02:00

57 lines
1.4 KiB
C

/* libguestfs - the guestfsd daemon
* Copyright (C) 2009 Red Hat Inc.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include "daemon.h"
#include "actions.h"
int
do_fallocate (const char *path, int len)
{
int fd, r;
CHROOT_IN;
fd = open (path, O_WRONLY | O_CREAT | O_TRUNC | O_NOCTTY, 0666);
CHROOT_OUT;
if (fd == -1) {
reply_with_perror (path);
return -1;
}
r = posix_fallocate (fd, 0, len);
if (r == -1) {
reply_with_perror ("posix_fallocate: %s", path);
close (fd);
return -1;
}
if (close (fd) == -1) {
reply_with_perror ("close: %s", path);
return -1;
}
return 0;
}