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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2022 Oxide Computer Company
*/
/*
* This is designed to act as a basic test of PORT_SOURCE_FILE associations and
* a regression test for illumos#14898. In particular we want to verify certain
* behaviors of association and disassociation with respect to the value in the
* user payload. We will create and tear down the underlying event port each
* time. The rough cases are:
*
* o associate, trigger, port_get -> first associate event
* o associate, associate, trigger, port_get -> second associate event
* o associate, trigger, associate, port_get -> second associate event
* o associate, disassociate, port_get -> no event
* o associate, trigger, disassociate, port_get -> no event
* o associate, trigger, disassociate, associate, port_get -> second associate
* event
* o associate, trigger, disassociate, fstat, associate, port_get -> no event
*/
#include <port.h>
#include <err.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <stdlib.h>
#include <strings.h>
#include <stdbool.h>
#include <sys/sysmacros.h>
static int fa_nfail = 0;
static uintptr_t fa_user = 1;
static char *fa_path;
/*
* This is a series of actions that we want to be able to take on our port. We
* keep going until we do encounter a FA_DONE, at which point we do a
* port_get() to compare things.
*/
typedef enum {
FA_DONE,
FA_ASSOC,
FA_DEASSOC,
FA_FSTAT,
FA_TRIGGER
} fa_act_t;
#define FA_MAX_EVENTS 6
typedef struct {
bool fa_getevent;
const char *fa_msg;
fa_act_t fa_acts[FA_MAX_EVENTS];
} fa_test_t;
fa_test_t fa_tests[] = {
{ false, "port_get -> no event",
{ FA_TRIGGER, FA_DONE } },
{ false, "associate, port_get -> no event",
{ FA_ASSOC, FA_DONE } },
{ true, "associate, trigger, port_get -> first user",
{ FA_ASSOC, FA_TRIGGER, FA_DONE } },
{ true, "associate, associate, trigger, port_get -> second user",
{ FA_ASSOC, FA_ASSOC, FA_TRIGGER, FA_DONE } },
{ true, "associate, trigger, associate, port_get -> second user",
{ FA_ASSOC, FA_TRIGGER, FA_ASSOC, FA_DONE } },
{ false, "associate, disassociate, port_get -> no event",
{ FA_ASSOC, FA_DEASSOC, FA_DONE } },
{ false, "associate, trigger, disassociate, port_get -> no event",
{ FA_ASSOC, FA_TRIGGER, FA_DEASSOC, FA_DONE } },
{ true, "associate, trigger, disassociate, associate, port_get -> "
"second user", { FA_ASSOC, FA_TRIGGER, FA_DEASSOC, FA_ASSOC,
FA_DONE } },
{ false, "associate, trigger, disassociate, fstat, associate, port_get "
"-> no event", { FA_ASSOC, FA_TRIGGER, FA_DEASSOC, FA_FSTAT,
FA_ASSOC, FA_DONE } },
};
static void
fa_run_test(int portfd, int filefd, fa_test_t *test)
{
int ret;
uint_t nget;
struct stat st;
struct file_obj fo;
port_event_t pe;
struct timespec to;
bool pass;
/*
* At the beginning of a test we stat our underlying file so we can make
* sure our information is up to date. We purposefully keep it the same
* across a run so that way certain tests will automatically trigger an
* event on association.
*/
if (fstat(filefd, &st) != 0) {
warn("failed to stat %s", fa_path);
(void) printf("TEST FAILED: %s\n", test->fa_msg);
fa_nfail = 1;
return;
}
bzero(&fo, sizeof (fo));
for (uint_t i = 0; test->fa_acts[i] != FA_DONE; i++) {
uint32_t data;
switch (test->fa_acts[i]) {
case FA_ASSOC:
bzero(&fo, sizeof (fo));
fo.fo_atime = st.st_atim;
fo.fo_mtime = st.st_mtim;
fo.fo_ctime = st.st_ctim;
fo.fo_name = fa_path;
fa_user++;
if (port_associate(portfd, PORT_SOURCE_FILE,
(uintptr_t)&fo, FILE_MODIFIED, (void *)fa_user) <
0) {
warn("failed to associate event");
fa_nfail = 1;
}
break;
case FA_DEASSOC:
if (port_dissociate(portfd, PORT_SOURCE_FILE,
(uintptr_t)&fo) != 0) {
warn("failed to dissociate event");
fa_nfail = 1;
}
break;
case FA_FSTAT:
if (fstat(filefd, &st) != 0) {
warn("failed to stat %s", fa_path);
fa_nfail = 1;
}
break;
case FA_TRIGGER:
data = arc4random();
if (write(filefd, &data, sizeof (data)) < 0) {
warn("failed to write data to %s", fa_path);
}
break;
default:
abort();
}
}
/*
* At this point we attempt to see if there's an event for us. We
* explicitly zero the timeout so we don't wait at all.
*/
bzero(&to, sizeof (to));
bzero(&pe, sizeof (pe));
nget = 1;
ret = port_getn(portfd, &pe, 1, &nget, &to);
if (ret < 0) {
warn("port_getn failed unexpectedly");
(void) printf("TEST FAILED: %s\n", test->fa_msg);
fa_nfail = 1;
return;
}
if (!test->fa_getevent) {
if (nget != 0) {
warnx("port_getn() returned an event, but we expected "
"none");
(void) printf("portev_events: 0x%x, portev_source: "
"0x%x\n", pe.portev_events, pe.portev_source);
(void) printf("TEST FAILED: %s\n", test->fa_msg);
fa_nfail = 1;
} else {
(void) printf("TEST PASSED: %s\n", test->fa_msg);
}
return;
} else {
if (nget == 0) {
warnx("port_getn() returned no events, but we expected "
"one");
(void) printf("TEST FAILED: %s\n", test->fa_msg);
fa_nfail = 1;
return;
}
}
pass = true;
if (pe.portev_source != PORT_SOURCE_FILE) {
(void) printf("port source mismatch: found 0x%x, expected "
"0x%x\n", pe.portev_source, PORT_SOURCE_FILE);
pass = false;
}
if (pe.portev_events != FILE_MODIFIED) {
(void) printf("port events mismatch: found 0x%x, expected "
"0x%x\n", pe.portev_events, FILE_MODIFIED);
pass = false;
}
if ((uintptr_t)pe.portev_user != fa_user) {
(void) printf("port user mismatch: found 0x%p, expected "
"0x%lx\n", pe.portev_user, fa_user);
pass = false;
}
if (pass) {
(void) printf("TEST PASSED: %s\n", test->fa_msg);
} else {
fa_nfail = 1;
(void) printf("TEST FAILED: %s\n", test->fa_msg);
}
}
int
main(void)
{
int fd;
if (asprintf(&fa_path, "/tmp/file_assoc_test.%d", getpid()) < 0) {
err(EXIT_FAILURE, "failed to create temp file");
}
fd = open(fa_path, O_RDWR | O_CREAT, 0644);
if (fd < 0) {
err(EXIT_FAILURE, "failed to create %s", fa_path);
}
/*
* We open and close the underlying port that we're using for each run
* to make sure that any associations that were created do not persist.
*/
for (uint_t i = 0; i < ARRAY_SIZE(fa_tests); i++) {
int port = port_create();
if (port < 0) {
err(EXIT_FAILURE, "failed to create event port");
}
fa_run_test(port, fd, &fa_tests[i]);
(void) close(port);
}
(void) close(fd);
(void) unlink(fa_path);
return (fa_nfail);
}
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