88fa3a7649
FreeBSD's mkstemp sets the temporary file's permissions to 600, and has ever since mkstemp was added in 1987. Coverity's warning is still relevant for portable programs since OpenGroup does not require that behavior, and POSIX didn't until 2008. But none of these programs are portable.
238 lines
6.1 KiB
C
238 lines
6.1 KiB
C
/*-
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* Copyright (C) 2005 IronPort Systems, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Prerequisities:
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* - AIO support must be compiled into the kernel (see sys/<arch>/NOTES for
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* more details).
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*
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* Note: it is a good idea to run this against a physical drive to
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* exercise the physio fast path (ie. aio_kqueue /dev/<something safe>)
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*/
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#include <sys/types.h>
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#include <sys/event.h>
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#include <sys/time.h>
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#include <aio.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "freebsd_test_suite/macros.h"
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#include "local.h"
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#define PATH_TEMPLATE "aio.XXXXXXXXXX"
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#define MAX_RUNS 300
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/* #define DEBUG */
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int
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main (int argc, char *argv[])
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{
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struct aiocb **iocb, *kq_iocb;
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char *file, pathname[sizeof(PATH_TEMPLATE)+1];
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struct kevent ke, kq_returned;
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struct timespec ts;
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char buffer[32768];
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int max_queue_per_proc;
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size_t max_queue_per_proc_size;
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#ifdef DEBUG
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int cancel, error;
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#endif
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int failed = 0, fd, kq, pending, result, run;
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int tmp_file = 0;
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int i, j;
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PLAIN_REQUIRE_KERNEL_MODULE("aio", 0);
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PLAIN_REQUIRE_UNSAFE_AIO(0);
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max_queue_per_proc_size = sizeof(max_queue_per_proc);
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if (sysctlbyname("vfs.aio.max_aio_queue_per_proc",
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&max_queue_per_proc, &max_queue_per_proc_size, NULL, 0) != 0)
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err(1, "sysctlbyname");
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iocb = calloc(max_queue_per_proc, sizeof(struct aiocb*));
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if (iocb == NULL)
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err(1, "calloc");
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kq = kqueue();
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if (kq < 0) {
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perror("No kqeueue\n");
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exit(1);
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}
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if (argc == 1) {
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strcpy(pathname, PATH_TEMPLATE);
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fd = mkstemp(pathname);
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file = pathname;
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tmp_file = 1;
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} else {
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file = argv[1];
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fd = open(file, O_RDWR|O_CREAT, 0666);
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}
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if (fd == -1)
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err(1, "Can't open %s\n", file);
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for (run = 0; run < MAX_RUNS; run++){
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#ifdef DEBUG
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printf("Run %d\n", run);
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#endif
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for (i = 0; i < max_queue_per_proc; i++) {
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iocb[i] = (struct aiocb *)calloc(1,
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sizeof(struct aiocb));
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if (iocb[i] == NULL)
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err(1, "calloc");
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}
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pending = 0;
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for (i = 0; i < max_queue_per_proc; i++) {
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pending++;
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iocb[i]->aio_nbytes = sizeof(buffer);
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iocb[i]->aio_buf = buffer;
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iocb[i]->aio_fildes = fd;
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iocb[i]->aio_offset = iocb[i]->aio_nbytes * i * run;
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iocb[i]->aio_sigevent.sigev_notify_kqueue = kq;
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iocb[i]->aio_sigevent.sigev_value.sival_ptr = iocb[i];
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iocb[i]->aio_sigevent.sigev_notify = SIGEV_KEVENT;
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result = aio_write(iocb[i]);
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if (result != 0) {
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perror("aio_write");
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printf("Result %d iteration %d\n", result, i);
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exit(1);
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}
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#ifdef DEBUG
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printf("WRITE %d is at %p\n", i, iocb[i]);
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#endif
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result = rand();
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if (result < RAND_MAX/32) {
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if (result > RAND_MAX/64) {
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result = aio_cancel(fd, iocb[i]);
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#ifdef DEBUG
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printf("Cancel %d %p result %d\n", i, iocb[i], result);
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#endif
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if (result == AIO_CANCELED) {
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aio_return(iocb[i]);
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iocb[i] = NULL;
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pending--;
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}
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}
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}
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}
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#ifdef DEBUG
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cancel = max_queue_per_proc - pending;
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#endif
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i = 0;
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while (pending) {
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for (;;) {
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bzero(&ke, sizeof(ke));
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bzero(&kq_returned, sizeof(ke));
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ts.tv_sec = 0;
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ts.tv_nsec = 1;
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result = kevent(kq, NULL, 0,
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&kq_returned, 1, &ts);
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#ifdef DEBUG
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error = errno;
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#endif
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if (result < 0)
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perror("kevent error: ");
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kq_iocb = kq_returned.udata;
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#ifdef DEBUG
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printf("kevent %d %d errno %d return.ident %p "
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"return.data %p return.udata %p %p"
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" filter %d flags %#x fflags %#x\n",
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i, result, error,
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(void*)kq_returned.ident,
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(void*)kq_returned.data,
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kq_returned.udata,
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kq_iocb,
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kq_returned.filter,
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kq_returned.flags,
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kq_returned.fflags);
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if (result > 0)
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printf("\tsigev_notify_kevent_flags %#x\n",
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((struct aiocb*)(kq_returned.ident))->aio_sigevent.sigev_notify_kevent_flags);
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#endif
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if (kq_iocb)
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break;
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#ifdef DEBUG
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printf("Try again left %d out of %d %d\n",
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pending, max_queue_per_proc, cancel);
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#endif
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}
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for (j = 0; j < max_queue_per_proc && iocb[j] != kq_iocb;
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j++) ;
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#ifdef DEBUG
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printf("kq_iocb %p\n", kq_iocb);
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printf("Error Result for %d is %d pending %d\n",
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j, result, pending);
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#endif
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result = aio_return(kq_iocb);
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#ifdef DEBUG
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printf("Return Result for %d is %d\n\n", j, result);
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#endif
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if (result != sizeof(buffer)) {
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printf("FAIL: run %d, operation %d, result %d "
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" (errno=%d) should be %zu\n", run, pending,
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result, errno, sizeof(buffer));
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failed++;
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} else
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printf("PASS: run %d, left %d\n", run,
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pending - 1);
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free(kq_iocb);
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iocb[j] = NULL;
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pending--;
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i++;
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}
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for (i = 0; i < max_queue_per_proc; i++)
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free(iocb[i]);
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}
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if (tmp_file)
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unlink(pathname);
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if (failed != 0)
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printf("FAIL: %d tests failed\n", failed);
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else
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printf("PASS: All tests passed\n");
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exit (failed == 0 ? 0 : 1);
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}
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