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/* $OpenBSD: vnode.c,v 1.3 2020/12/03 19:16:57 anton Exp $ */
/*
* Copyright (c) 2020 Anton Lindqvist <anton@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <err.h>
#include <errno.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "extern.h"
static void sighandler(int);
static void __dead usage(void);
int loglevel = 0;
static int gotsig;
int
main(int argc, char *argv[])
{
struct {
const char *t_name;
int (*t_func)(struct context *);
} tests[] = {
{ "deadlock", test_deadlock },
{ NULL, NULL },
};
struct context ctx;
int ch, i;
memset(&ctx, 0, sizeof(ctx));
ctx.c_iterations = 100;
while ((ch = getopt(argc, argv, "If:v")) != -1) {
switch (ch) {
case 'I':
ctx.c_iterations = -1;
break;
case 'f':
ctx.c_path = optarg;
break;
case 'v':
loglevel++;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc != 1 || ctx.c_path == NULL)
usage();
if (signal(SIGINT, sighandler) == SIG_ERR)
err(1, "signal");
for (i = 0;; i++) {
if (tests[i].t_name == NULL)
err(1, "%s: no such test", *argv);
if (strcmp(tests[i].t_name, *argv))
continue;
return tests[i].t_func(&ctx);
}
return 0;
}
int
ctx_abort(struct context *ctx)
{
if (gotsig)
return 1;
if (ctx->c_iterations > 0 && --ctx->c_iterations == 0)
return 1;
return 0;
}
void
logit(const char *fmt, ...)
{
char buf[1024];
va_list ap;
char *p = buf;
ssize_t siz = sizeof(buf);
int n;
n = snprintf(p, siz, "[%d] ", getpid());
if (n < 0 || n >= siz)
errc(1, ENAMETOOLONG, "%s", __func__);
p += n;
siz -= n;
va_start(ap, fmt);
n = vsnprintf(p, siz, fmt, ap);
va_end(ap);
if (n < 0 || n >= siz)
errc(1, ENAMETOOLONG, "%s", __func__);
p += n;
siz -= n;
fprintf(stderr, "%s\n", buf);
}
static void
sighandler(int signo)
{
gotsig = signo;
}
static void __dead
usage(void)
{
fprintf(stderr, "usage: vnode [-Iv] -f path test-case\n");
exit(1);
}
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