lighttpd 1.4.x https://www.lighttpd.net/
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#include "first.h"
#include "fdevent_impl.h"
#include "fdevent.h"
#include "buffer.h"
#include "log.h"
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#ifdef FDEVENT_USE_SOLARIS_DEVPOLL
# include <sys/devpoll.h>
# include <sys/ioctl.h>
static void fdevent_solaris_devpoll_free(fdevents *ev) {
free(ev->devpollfds);
close(ev->devpoll_fd);
}
/* return -1 is fine here */
static int fdevent_solaris_devpoll_event_del(fdevents *ev, int fde_ndx, int fd) {
struct pollfd pfd;
if (fde_ndx < 0) return -1;
pfd.fd = fd;
pfd.events = POLLREMOVE;
pfd.revents = 0;
if (-1 == write(ev->devpoll_fd, &pfd, sizeof(pfd))) {
log_error_write(ev->srv, __FILE__, __LINE__, "S(D, S)",
"(del) write failed: ", fd, strerror(errno));
return -1;
}
return -1;
}
static int fdevent_solaris_devpoll_event_set(fdevents *ev, int fde_ndx, int fd, int events) {
struct pollfd pfd;
int add = 0;
int pevents = 0;
if (events & FDEVENT_IN) pevents |= POLLIN;
if (events & FDEVENT_OUT) pevents |= POLLOUT;
if (fde_ndx == -1) add = 1;
pfd.fd = fd;
pfd.events = pevents;
pfd.revents = 0;
if (-1 == write(ev->devpoll_fd, &pfd, sizeof(pfd))) {
log_error_write(ev->srv, __FILE__, __LINE__, "S(D, S)",
"(set) write failed: ", fd, strerror(errno));
return -1;
}
return fd;
}
static int fdevent_solaris_devpoll_poll(fdevents *ev, int timeout_ms) {
struct dvpoll dopoll;
int ret;
dopoll.dp_timeout = timeout_ms;
dopoll.dp_nfds = ev->maxfds - 1;
dopoll.dp_fds = ev->devpollfds;
ret = ioctl(ev->devpoll_fd, DP_POLL, &dopoll);
return ret;
}
static int fdevent_solaris_devpoll_event_get_revent(fdevents *ev, size_t ndx) {
int r, poll_r;
r = 0;
poll_r = ev->devpollfds[ndx].revents;
/* map POLL* to FDEVEN_*; they are probably the same, but still. */
if (poll_r & POLLIN) r |= FDEVENT_IN;
if (poll_r & POLLOUT) r |= FDEVENT_OUT;
if (poll_r & POLLERR) r |= FDEVENT_ERR;
if (poll_r & POLLHUP) r |= FDEVENT_HUP;
if (poll_r & POLLNVAL) r |= FDEVENT_NVAL;
if (poll_r & POLLPRI) r |= FDEVENT_PRI;
return r;
}
static int fdevent_solaris_devpoll_event_get_fd(fdevents *ev, size_t ndx) {
return ev->devpollfds[ndx].fd;
}
static int fdevent_solaris_devpoll_event_next_fdndx(fdevents *ev, int last_ndx) {
size_t i;
UNUSED(ev);
i = (last_ndx < 0) ? 0 : last_ndx + 1;
return i;
}
int fdevent_solaris_devpoll_reset(fdevents *ev) {
/* a forked process does only inherit the filedescriptor,
* but every operation on the device will lead to a EACCES */
if ((ev->devpoll_fd = open("/dev/poll", O_RDWR)) < 0) {
log_error_write(ev->srv, __FILE__, __LINE__, "SSS",
"opening /dev/poll failed (", strerror(errno), "), try to set server.event-handler = \"poll\" or \"select\"");
return -1;
}
fdevent_setfd_cloexec(ev->devpoll_fd);
return 0;
}
int fdevent_solaris_devpoll_init(fdevents *ev) {
ev->type = FDEVENT_HANDLER_SOLARIS_DEVPOLL;
#define SET(x) \
ev->x = fdevent_solaris_devpoll_##x;
SET(free);
SET(poll);
SET(reset);
SET(event_del);
SET(event_set);
SET(event_next_fdndx);
SET(event_get_fd);
SET(event_get_revent);
ev->devpollfds = malloc(sizeof(*ev->devpollfds) * ev->maxfds);
force_assert(NULL != ev->devpollfds);
if ((ev->devpoll_fd = open("/dev/poll", O_RDWR)) < 0) {
log_error_write(ev->srv, __FILE__, __LINE__, "SSS",
"opening /dev/poll failed (", strerror(errno), "), try to set server.event-handler = \"poll\" or \"select\"");
return -1;
}
/* we just wanted to check if it works */
close(ev->devpoll_fd);
ev->devpoll_fd = -1;
return 0;
}
#else
int fdevent_solaris_devpoll_init(fdevents *ev) {
UNUSED(ev);
log_error_write(ev->srv, __FILE__, __LINE__, "S",
"solaris-devpoll not supported, try to set server.event-handler = \"poll\" or \"select\"");
return -1;
}
#endif