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/*
* Copyright (c) 2009 Mark Heily <mark@heily.com>
*
* 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 "common.h"
extern int kqfd;
/* Checks if any events are pending, which is an error. */
void
_test_no_kevents(int kqfd, const char *file, int line)
{
int nfds;
struct timespec timeo;
struct kevent kev;
memset(&timeo, 0, sizeof(timeo));
nfds = kevent(kqfd, NULL, 0, &kev, 1, &timeo);
if (nfds < 0)
err(1, "kevent(2)");
if (nfds > 0) {
printf("\n[%s:%d]: Unexpected event:", file, line);
err(1, kevent_to_str(&kev));
}
}
/* Retrieve a single kevent */
void
kevent_get(struct kevent *kev, int kqfd)
{
struct kevent buf;
int nfds;
if (kev == NULL)
kev = &buf;
nfds = kevent(kqfd, NULL, 0, kev, 1, NULL);
if (nfds < 1)
err(1, "kevent(2)");
}
/* In Linux, a kevent() call with less than 1ms resolution
will perform a pselect() call to obtain the higer resolution.
This test exercises that codepath.
*/
void
kevent_get_hires(struct kevent *kev, int kqfd)
{
int nfds;
struct timespec timeo;
timeo.tv_sec = 0;
timeo.tv_nsec = 500000;
nfds = kevent(kqfd, NULL, 0, kev, 1, &timeo);
if (nfds < 1)
die("kevent(2)");
}
char *
kevent_fflags_dump(struct kevent *kev)
{
char *buf;
#define KEVFFL_DUMP(attrib) \
if (kev->fflags & attrib) \
strncat(buf, #attrib" ", 64);
if ((buf = calloc(1, 1024)) == NULL)
abort();
/* Not every filter has meaningful fflags */
if (kev->filter != EVFILT_VNODE) {
snprintf(buf, 1024, "fflags = %d", kev->fflags);
return (buf);
}
snprintf(buf, 1024, "fflags = %d (", kev->fflags);
KEVFFL_DUMP(NOTE_DELETE);
KEVFFL_DUMP(NOTE_WRITE);
KEVFFL_DUMP(NOTE_EXTEND);
#if HAVE_NOTE_TRUNCATE
KEVFFL_DUMP(NOTE_TRUNCATE);
#endif
KEVFFL_DUMP(NOTE_ATTRIB);
KEVFFL_DUMP(NOTE_LINK);
KEVFFL_DUMP(NOTE_RENAME);
#if HAVE_NOTE_REVOKE
KEVFFL_DUMP(NOTE_REVOKE);
#endif
buf[strlen(buf) - 1] = ')';
return (buf);
}
char *
kevent_flags_dump(struct kevent *kev)
{
char *buf;
#define KEVFL_DUMP(attrib) \
if (kev->flags & attrib) \
strncat(buf, #attrib" ", 64);
if ((buf = calloc(1, 1024)) == NULL)
abort();
snprintf(buf, 1024, "flags = %d (", kev->flags);
KEVFL_DUMP(EV_ADD);
KEVFL_DUMP(EV_ENABLE);
KEVFL_DUMP(EV_DISABLE);
KEVFL_DUMP(EV_DELETE);
KEVFL_DUMP(EV_ONESHOT);
KEVFL_DUMP(EV_CLEAR);
KEVFL_DUMP(EV_EOF);
KEVFL_DUMP(EV_ERROR);
#ifdef EV_DISPATCH
KEVFL_DUMP(EV_DISPATCH);
#endif
#ifdef EV_RECEIPT
KEVFL_DUMP(EV_RECEIPT);
#endif
buf[strlen(buf) - 1] = ')';
return (buf);
}
/* TODO - backport changes from src/common/kevent.c kevent_dump() */
const char *
kevent_to_str(struct kevent *kev)
{
char buf[512];
snprintf(&buf[0], sizeof(buf),
"[ident=%d, filter=%d, %s, %s, data=%d, udata=%p]",
(u_int) kev->ident,
kev->filter,
kevent_flags_dump(kev),
kevent_fflags_dump(kev),
(int) kev->data,
kev->udata);
return (strdup(buf));
}
void
kevent_update(int kqfd, struct kevent *kev)
{
if (kevent(kqfd, kev, 1, NULL, 0, NULL) < 0) {
printf("Unable to add the following kevent:\n%s\n",
kevent_to_str(kev));
die("kevent");
}
}
void
kevent_add(int kqfd, struct kevent *kev,
uintptr_t ident,
short filter,
u_short flags,
u_int fflags,
intptr_t data,
void *udata)
{
EV_SET(kev, ident, filter, flags, fflags, data, NULL);
if (kevent(kqfd, kev, 1, NULL, 0, NULL) < 0) {
printf("Unable to add the following kevent:\n%s\n",
kevent_to_str(kev));
die("kevent");
}
}
void
_kevent_cmp(struct kevent *k1, struct kevent *k2, const char *file, int line)
{
/* XXX-
Workaround for inconsistent implementation of kevent(2)
*/
#if defined (__FreeBSD_kernel__) || defined (__FreeBSD__)
if (k1->flags & EV_ADD)
k2->flags |= EV_ADD;
#endif
if (memcmp(k1, k2, sizeof(*k1)) != 0) {
printf("[%s:%d]: kevent_cmp() failed:\n expected %s\n but got %s\n",
file, line, kevent_to_str(k1), kevent_to_str(k2));
abort();
}
}
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