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/* GDM - The GNOME Display Manager
* Copyright (C) 2005 Sun Microsystems, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* program to either force pages into memory or force them
* out (-o option)
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <strings.h>
int out = 0;
static int
doout(char *s)
{
int fd;
void *map;
struct stat buf;
if (((fd = open (s, O_RDONLY)) < 0) ||
(fstat (fd, &buf) < 0) ||
((map = mmap (NULL, buf.st_size, PROT_READ, MAP_PRIVATE, fd, 0)) ==
MAP_FAILED)) {
(void)close(fd);
return (-1);
}
(void)close (fd);
(void)msync (map, buf.st_size, MS_INVALIDATE);
(void)munmap (map, buf.st_size);
return (0);
}
#define SIZE 1024*128
static int
doin (char *s)
{
int fd;
char buffer[SIZE];
if ((fd = open(s, O_RDONLY)) < 0) {
fprintf (stderr, "fopen: %s %s\n", strerror (errno), s);
return (-1);
}
while (read (fd, buffer, SIZE) != 0)
;
(void)close (fd);
return (0);
}
int
main (int argc, char *argv[])
{
FILE *fp = 0;
int c, errflg = 0;
extern int optind, optopt;
extern char *optarg;
while ((c = getopt (argc, argv, "o:")) != -1) {
switch (c) {
case 'o':
out = 1;
break;
default:
errflg++;
break;
}
}
if (errflg) {
fprintf (stderr, "usage: %s [-o] filename [filename]\n",
argv[0]);
exit (1);
}
for (; optind < argc; optind++) {
if ((argv[optind][0] == '@') && ((fp = fopen (argv[optind], "r")) == 0)) {
char path[1024];
if ((fp = fopen (&(argv[optind][1]), "r")) == 0) {
fprintf (stderr, "fopen: %s %s\n", strerror (errno), &argv[optind][1]);
continue;
}
while (fgets (path, sizeof (path), fp) != 0) {
path[strlen(path) -1] = '\0';
if (path[0] == '#') {
continue;
}
if (!out) {
doin (path);
} else {
doout (path);
}
}
fclose (fp);
fp = 0;
} else {
if (fp != 0) {
fclose (fp);
fp = 0;
}
if (!out) {
doin (argv[optind]);
} else {
doout (argv[optind]);
}
}
}
exit (0);
}
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