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Add Solaris ports as a tevent backend.
Signed-off-by: Jeremy Allison <jra@samba.org> Reviewed-by: David Disseldorp <ddiss@samba.org> Autobuild-User(master): David Disseldorp <ddiss@samba.org> Autobuild-Date(master): Sun Feb 15 23:25:07 CET 2015 on sn-devel-104
This commit is contained in:
Jeremy Allison
David Disseldorp
parent
6f41a78c0e
commit
88c1eb4ae1
@ -34,6 +34,10 @@
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#include <sys/epoll.h>
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#endif
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#ifdef HAVE_SOLARIS_PORTS
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#include <port.h>
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#endif
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#ifndef SELECT_CAST
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#define SELECT_CAST
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#endif
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@ -38,6 +38,7 @@ def configure(conf):
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conf.CHECK_HEADERS('libaio.h locale.h ndir.h pwd.h')
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conf.CHECK_HEADERS('shadow.h sys/acl.h')
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conf.CHECK_HEADERS('sys/attributes.h attr/attributes.h sys/capability.h sys/dir.h sys/epoll.h')
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conf.CHECK_HEADERS('port.h')
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conf.CHECK_HEADERS('sys/fcntl.h sys/filio.h sys/filsys.h sys/fs/s5param.h sys/fs/vx/quota.h')
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conf.CHECK_HEADERS('sys/id.h sys/ioctl.h sys/ipc.h sys/mman.h sys/mode.h sys/ndir.h sys/priv.h')
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conf.CHECK_HEADERS('sys/resource.h sys/security.h sys/shm.h sys/statfs.h sys/statvfs.h sys/termio.h')
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@ -283,6 +284,7 @@ def configure(conf):
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conf.CHECK_FUNCS('timegm getifaddrs freeifaddrs mmap setgroups syscall setsid')
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conf.CHECK_FUNCS('getgrent_r getgrgid_r getgrnam_r getgrouplist getpagesize')
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conf.CHECK_FUNCS('getpwent_r getpwnam_r getpwuid_r epoll_create')
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conf.CHECK_FUNCS('port_create')
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conf.SET_TARGET_TYPE('attr', 'EMPTY')
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@ -487,6 +489,9 @@ removeea setea
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if conf.CONFIG_SET('HAVE_EPOLL_CREATE') and conf.CONFIG_SET('HAVE_SYS_EPOLL_H'):
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conf.DEFINE('HAVE_EPOLL', 1)
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if conf.CONFIG_SET('HAVE_PORT_CREATE') and conf.CONFIG_SET('HAVE_PORT_H'):
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conf.DEFINE('HAVE_SOLARIS_PORTS', 1)
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conf.CHECK_HEADERS('poll.h')
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conf.CHECK_FUNCS('poll')
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@ -123,9 +123,12 @@ static void tevent_backend_init(void)
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tevent_select_init();
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tevent_poll_init();
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tevent_poll_mt_init();
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#ifdef HAVE_EPOLL
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#if defined(HAVE_EPOLL)
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tevent_epoll_init();
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#elif defined(HAVE_SOLARIS_PORTS)
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tevent_port_init();
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#endif
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tevent_standard_init();
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}
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@ -351,6 +351,9 @@ void tevent_epoll_set_panic_fallback(struct tevent_context *ev,
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bool (*panic_fallback)(struct tevent_context *ev,
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bool replay));
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#endif
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#ifdef HAVE_SOLARIS_PORTS
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bool tevent_port_init(void);
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#endif
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void tevent_trace_point_callback(struct tevent_context *ev,
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779
lib/tevent/tevent_port.c
Normal file
779
lib/tevent/tevent_port.c
Normal file
@ -0,0 +1,779 @@
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/*
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Unix SMB/CIFS implementation.
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Main select loop and event handling - Solaris port implementation.
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Losely based on the Linux epoll backend.
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Copyright (C) Jeremy Allison 2013
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** NOTE! The following LGPL license applies to the tevent
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** library. This does NOT imply that all of Samba is released
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** under the LGPL
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 3 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "replace.h"
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#include "system/filesys.h"
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#include "system/select.h"
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#include "tevent.h"
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#include "tevent_internal.h"
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#include "tevent_util.h"
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struct port_associate_vals {
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struct port_associate_vals *prev, *next;
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struct port_event_context *port_ev;
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int events;
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struct tevent_fd *fde;
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bool associated_event;
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};
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struct port_event_context {
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/* a pointer back to the generic event_context */
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struct tevent_context *ev;
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/* This is the handle from port_create */
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int port_fd;
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pid_t pid;
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/* List of associations. */
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struct port_associate_vals *po_vals;
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};
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#define PORT_ADDITIONAL_FD_FLAG_HAS_ASSOCIATION (1<<0)
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#define PORT_ADDITIONAL_FD_FLAG_REPORT_ERROR (1<<1)
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#define PORT_ADDITIONAL_FD_FLAG_GOT_ERROR (1<<2)
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#define PORT_ADDITIONAL_FD_FLAG_HAS_MPX (1<<3)
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/*
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Map from TEVENT_FD_* to POLLIN/POLLOUT
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*/
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static int port_map_flags(uint16_t flags)
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{
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int ret = 0;
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if (flags & TEVENT_FD_READ) ret |= (POLLIN | POLLERR | POLLHUP);
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if (flags & TEVENT_FD_WRITE) ret |= (POLLOUT | POLLERR | POLLHUP);
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return ret;
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}
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/*
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Free the port fd
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*/
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static int port_ctx_destructor(struct port_event_context *port_ev)
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{
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close(port_ev->port_fd);
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port_ev->port_fd = -1;
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return 0;
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}
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/*
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Init the port fd
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*/
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static int port_init_ctx(struct port_event_context *port_ev)
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{
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port_ev->port_fd = port_create();
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if (port_ev->port_fd == -1) {
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tevent_debug(port_ev->ev, TEVENT_DEBUG_FATAL,
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"Failed to create port handle.\n");
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return -1;
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}
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if (!ev_set_close_on_exec(port_ev->port_fd)) {
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tevent_debug(port_ev->ev, TEVENT_DEBUG_WARNING,
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"Failed to set close-on-exec, file descriptor may be leaked to children.\n");
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}
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port_ev->pid = getpid();
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talloc_set_destructor(port_ev, port_ctx_destructor);
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return 0;
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}
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/*
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Functions to manage the lower level cache of associated events on the port_fd.
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*/
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static int port_associate_vals_destructor(struct port_associate_vals *val)
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{
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DLIST_REMOVE(val->port_ev->po_vals, val);
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memset(val, '\0', sizeof(struct port_associate_vals));
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return 0;
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}
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/*
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* TODO: As the port_association is per-fde, it should be possible to store it
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* directly in fde->additional_data, alongside any multiplexed-fde. That way the
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* lookup on store and delete would be avoided, and associate_all_events() could
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* walk the ev->fd_events list.
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*/
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static bool store_port_association(struct port_event_context *port_ev,
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struct tevent_fd *fde,
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int events)
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{
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struct port_associate_vals *val;
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for (val = port_ev->po_vals; val; val = val->next) {
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if (val->fde->fd == fde->fd) {
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/* Association already attached to fd. */
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if (val->events != events) {
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val->events = events;
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val->associated_event = false;
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}
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return true;
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}
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}
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val = talloc_zero(port_ev, struct port_associate_vals);
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if (val == NULL) {
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return false;
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}
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val->port_ev = port_ev;
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val->fde = fde;
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val->events = events;
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val->associated_event = false;
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DLIST_ADD(port_ev->po_vals, val);
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talloc_set_destructor(val, port_associate_vals_destructor);
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return true;
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}
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static void delete_port_association(struct port_event_context *port_ev,
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struct tevent_fd *fde)
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{
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struct port_associate_vals *val;
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for (val = port_ev->po_vals; val; val = val->next) {
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if (val->fde == fde) {
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if (val->associated_event) {
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(void)port_dissociate(port_ev->port_fd,
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PORT_SOURCE_FD,
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fde->fd);
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}
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talloc_free(val);
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return;
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}
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}
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}
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static int associate_all_events(struct port_event_context *port_ev)
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{
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struct port_associate_vals *val;
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for (val = port_ev->po_vals; val; val = val->next) {
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if (val->associated_event) {
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continue;
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}
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int ret = port_associate(port_ev->port_fd,
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PORT_SOURCE_FD,
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(uintptr_t)val->fde->fd,
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val->events,
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(void *)val);
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if (ret != 0) {
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return -1;
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}
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val->associated_event = true;
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}
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return 0;
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}
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static int port_update_event(struct port_event_context *port_ev, struct tevent_fd *fde);
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/*
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Reopen the port handle when our pid changes.
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*/
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static int port_check_reopen(struct port_event_context *port_ev)
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{
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struct tevent_fd *fde;
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if (port_ev->pid == getpid()) {
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return 0;
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}
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close(port_ev->port_fd);
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port_ev->port_fd = port_create();
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if (port_ev->port_fd == -1) {
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tevent_debug(port_ev->ev, TEVENT_DEBUG_FATAL,
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"port_create() failed");
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return -1;
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}
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if (!ev_set_close_on_exec(port_ev->port_fd)) {
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tevent_debug(port_ev->ev, TEVENT_DEBUG_WARNING,
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"Failed to set close-on-exec, file descriptor may be leaked to children.\n");
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}
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port_ev->pid = getpid();
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for (fde=port_ev->ev->fd_events;fde;fde=fde->next) {
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fde->additional_flags &= PORT_ADDITIONAL_FD_FLAG_HAS_ASSOCIATION;
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if (port_update_event(port_ev, fde) != 0) {
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return -1;
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}
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}
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return 0;
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}
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/*
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* Solaris ports cannot add the same file descriptor twice, once
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* with read, once with write which is allowed by the tevent backend.
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* Multiplex the existing fde, flag it as such so we can search for the
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* correct fde on event triggering.
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*/
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static void port_setup_multiplex_fd(struct port_event_context *port_ev,
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struct tevent_fd *add_fde,
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struct tevent_fd *mpx_fde)
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{
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/*
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* Make each fde->additional_data pointers point at each other
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* so we can look them up from each other. They are now paired.
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*/
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mpx_fde->additional_data = add_fde;
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add_fde->additional_data = mpx_fde;
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/* Now flag both fde's as being multiplexed. */
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mpx_fde->additional_flags |= PORT_ADDITIONAL_FD_FLAG_HAS_MPX;
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add_fde->additional_flags |= PORT_ADDITIONAL_FD_FLAG_HAS_MPX;
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/* We need to keep the GOT_ERROR flag. */
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if (mpx_fde->additional_flags & PORT_ADDITIONAL_FD_FLAG_GOT_ERROR) {
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add_fde->additional_flags |= PORT_ADDITIONAL_FD_FLAG_GOT_ERROR;
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}
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}
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/*
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Add the port event to the given fd_event,
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Or modify an existing event.
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*/
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static int port_add_event(struct port_event_context *port_ev, struct tevent_fd *fde)
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{
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int flags = port_map_flags(fde->flags);
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struct tevent_fd *mpx_fde = NULL;
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fde->additional_flags &= ~PORT_ADDITIONAL_FD_FLAG_HAS_ASSOCIATION;
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fde->additional_flags &= ~PORT_ADDITIONAL_FD_FLAG_REPORT_ERROR;
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if (fde->additional_flags & PORT_ADDITIONAL_FD_FLAG_HAS_MPX) {
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/*
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* This is already a multiplexed fde, we need to include both
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* flags in the modified event.
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*/
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mpx_fde = talloc_get_type_abort(fde->additional_data,
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struct tevent_fd);
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mpx_fde->additional_flags &= ~PORT_ADDITIONAL_FD_FLAG_HAS_ASSOCIATION;
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mpx_fde->additional_flags &= ~PORT_ADDITIONAL_FD_FLAG_REPORT_ERROR;
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flags |= port_map_flags(mpx_fde->flags);
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} else {
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/*
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* Not (yet) a multiplexed event. See if there
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* is already an event with the same fd.
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*/
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for (mpx_fde = port_ev->ev->fd_events; mpx_fde; mpx_fde = mpx_fde->next) {
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if (mpx_fde->fd != fde->fd) {
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continue;
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}
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if (mpx_fde == fde) {
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continue;
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}
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/* Same fd. */
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break;
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}
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if (mpx_fde) {
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if (mpx_fde->additional_flags & PORT_ADDITIONAL_FD_FLAG_HAS_MPX) {
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/* Logic error. Can't have more then 2 multiplexed fde's. */
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tevent_debug(port_ev->ev, TEVENT_DEBUG_FATAL,
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"multiplex fde for fd[%d] is already multiplexed\n",
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mpx_fde->fd);
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return -1;
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}
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flags |= port_map_flags(mpx_fde->flags);
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}
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}
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if (!store_port_association(port_ev,
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fde,
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flags)) {
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tevent_debug(port_ev->ev, TEVENT_DEBUG_FATAL,
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"store_port_association failed for fd[%d]\n",
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fde->fd);
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return -1;
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}
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/* Note we have an association now. */
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fde->additional_flags |= PORT_ADDITIONAL_FD_FLAG_HAS_ASSOCIATION;
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/* Only if we want to read do we tell the event handler about errors. */
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if (fde->flags & TEVENT_FD_READ) {
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fde->additional_flags |= PORT_ADDITIONAL_FD_FLAG_REPORT_ERROR;
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}
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if (mpx_fde == NULL) {
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return 0;
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}
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/* Set up the multiplex pointer. Does no harm if already multiplexed. */
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port_setup_multiplex_fd(port_ev,
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fde,
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mpx_fde);
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mpx_fde->additional_flags |= PORT_ADDITIONAL_FD_FLAG_HAS_ASSOCIATION;
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/* Only if we want to read do we tell the event handler about errors. */
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if (mpx_fde->flags & TEVENT_FD_READ) {
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mpx_fde->additional_flags |= PORT_ADDITIONAL_FD_FLAG_REPORT_ERROR;
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}
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return 0;
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}
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/*
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Delete the port association for the given fd_event.
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*/
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static void port_del_event(struct port_event_context *port_ev, struct tevent_fd *fde)
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{
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struct tevent_fd *mpx_fde = NULL;
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fde->additional_flags &= ~PORT_ADDITIONAL_FD_FLAG_HAS_ASSOCIATION;
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fde->additional_flags &= ~PORT_ADDITIONAL_FD_FLAG_REPORT_ERROR;
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if (fde->additional_flags & PORT_ADDITIONAL_FD_FLAG_HAS_MPX) {
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/*
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* This is a multiplexed fde, we need to remove
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* both associations.
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*/
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mpx_fde = talloc_get_type_abort(fde->additional_data,
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struct tevent_fd);
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mpx_fde->additional_flags &= ~PORT_ADDITIONAL_FD_FLAG_HAS_ASSOCIATION;
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mpx_fde->additional_flags &= ~PORT_ADDITIONAL_FD_FLAG_REPORT_ERROR;
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mpx_fde->additional_data = NULL;
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fde->additional_data = NULL;
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}
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delete_port_association(port_ev, fde);
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}
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/*
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Add or remove the port event from the given fd_event
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*/
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static int port_update_event(struct port_event_context *port_ev, struct tevent_fd *fde)
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{
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bool got_error = (fde->additional_flags & PORT_ADDITIONAL_FD_FLAG_GOT_ERROR);
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bool want_read = (fde->flags & TEVENT_FD_READ);
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bool want_write = (fde->flags & TEVENT_FD_WRITE);
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struct tevent_fd *mpx_fde = NULL;
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if (fde->additional_flags & PORT_ADDITIONAL_FD_FLAG_HAS_MPX) {
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/*
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* work out what the multiplexed fde wants.
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*/
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mpx_fde = talloc_get_type_abort(fde->additional_data,
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struct tevent_fd);
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if (mpx_fde->flags & TEVENT_FD_READ) {
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want_read = true;
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}
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||||
if (mpx_fde->flags & TEVENT_FD_WRITE) {
|
||||
want_write = true;
|
||||
}
|
||||
}
|
||||
|
||||
if (fde->additional_flags & PORT_ADDITIONAL_FD_FLAG_HAS_ASSOCIATION) {
|
||||
/* There's already an association. */
|
||||
if (want_read || (want_write && !got_error)) {
|
||||
return port_add_event(port_ev, fde);
|
||||
}
|
||||
/*
|
||||
* If we want to match the select behavior, we need to remove the port event
|
||||
* when the caller isn't interested in events.
|
||||
*/
|
||||
port_del_event(port_ev, fde);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* There's no port event attached to the fde. */
|
||||
if (want_read || (want_write && !got_error)) {
|
||||
return port_add_event(port_ev, fde);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
Cope with port_get returning EPOLLHP|EPOLLERR on an association.
|
||||
Return true if there's nothing else to do, false if this event
|
||||
needs further handling.
|
||||
*/
|
||||
|
||||
static bool port_handle_hup_or_err(struct port_event_context *port_ev,
|
||||
struct tevent_fd *fde)
|
||||
{
|
||||
if (fde == NULL) {
|
||||
return true;
|
||||
}
|
||||
|
||||
fde->additional_flags |= PORT_ADDITIONAL_FD_FLAG_GOT_ERROR;
|
||||
/*
|
||||
* If we only wait for TEVENT_FD_WRITE, we should not tell the
|
||||
* event handler about it, and remove the port association,
|
||||
* as we only report error when waiting for read events,
|
||||
* to match the select() behavior.
|
||||
*/
|
||||
if (!(fde->additional_flags & PORT_ADDITIONAL_FD_FLAG_REPORT_ERROR)) {
|
||||
/*
|
||||
* Do the same as the poll backend and
|
||||
* remove the writable flag.
|
||||
*/
|
||||
fde->flags &= ~TEVENT_FD_WRITE;
|
||||
return true;
|
||||
}
|
||||
/* This has TEVENT_FD_READ set, we're not finished. */
|
||||
return false;
|
||||
}
|
||||
|
||||
/*
|
||||
Event loop handling using Solaris ports.
|
||||
*/
|
||||
static int port_event_loop(struct port_event_context *port_ev, struct timeval *tvalp)
|
||||
{
|
||||
int ret;
|
||||
#define MAXEVENTS 1
|
||||
port_event_t events[MAXEVENTS];
|
||||
uint_t nget = 1;
|
||||
uint_t max_events = MAXEVENTS;
|
||||
uint_t i;
|
||||
int port_errno;
|
||||
struct timespec ts;
|
||||
struct tevent_context *ev = port_ev->ev;
|
||||
|
||||
if (tvalp) {
|
||||
ts.tv_sec = tvalp->tv_sec;
|
||||
ts.tv_nsec = tvalp->tv_usec * 1000;
|
||||
}
|
||||
|
||||
if (port_ev->ev->signal_events &&
|
||||
tevent_common_check_signal(ev)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Solaris triggers sending the event to the port
|
||||
* at the time the port association is done. Postpone
|
||||
* associating fd's until just before we get the events,
|
||||
* otherwise we can deadlock.
|
||||
*/
|
||||
|
||||
if (associate_all_events(port_ev) != 0) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
tevent_trace_point_callback(ev, TEVENT_TRACE_BEFORE_WAIT);
|
||||
ret = port_getn(port_ev->port_fd, events, max_events, &nget, &ts);
|
||||
port_errno = errno;
|
||||
tevent_trace_point_callback(ev, TEVENT_TRACE_AFTER_WAIT);
|
||||
|
||||
if (ret == -1 && port_errno == EINTR && ev->signal_events) {
|
||||
if (tevent_common_check_signal(ev)) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
if (ret == -1 && port_errno == ETIME && tvalp) {
|
||||
/* we don't care about a possible delay here */
|
||||
tevent_common_loop_timer_delay(ev);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (ret == -1) {
|
||||
tevent_debug(ev, TEVENT_DEBUG_ERROR,
|
||||
"port_get failed (%s)\n",
|
||||
strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
|
||||
for (i = 0; i < nget; i++) {
|
||||
struct tevent_fd *mpx_fde = NULL;
|
||||
struct tevent_fd *fde = NULL;
|
||||
uint16_t flags = 0;
|
||||
struct port_associate_vals *val = talloc_get_type(events[i].portev_user,
|
||||
struct port_associate_vals);
|
||||
if (val == NULL) {
|
||||
tevent_debug(ev, TEVENT_DEBUG_ERROR,
|
||||
"port_getn() gave bad data");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Mark this event as needing to be re-associated. */
|
||||
val->associated_event = false;
|
||||
|
||||
fde = val->fde;
|
||||
|
||||
if (fde->additional_flags & PORT_ADDITIONAL_FD_FLAG_HAS_MPX) {
|
||||
/*
|
||||
* Save off the multiplexed event in case we need
|
||||
* to use it to call the handler function.
|
||||
*/
|
||||
mpx_fde = talloc_get_type_abort(fde->additional_data,
|
||||
struct tevent_fd);
|
||||
}
|
||||
|
||||
if (events[i].portev_events & (POLLHUP|POLLERR)) {
|
||||
bool handled_fde = port_handle_hup_or_err(port_ev, fde);
|
||||
bool handled_mpx = port_handle_hup_or_err(port_ev, mpx_fde);
|
||||
|
||||
if (handled_fde && handled_mpx) {
|
||||
return port_update_event(port_ev, fde);
|
||||
}
|
||||
|
||||
if (!handled_mpx) {
|
||||
/*
|
||||
* If the mpx event was the one that needs
|
||||
* further handling, it's the TEVENT_FD_READ
|
||||
* event so switch over and call that handler.
|
||||
*/
|
||||
fde = mpx_fde;
|
||||
mpx_fde = NULL;
|
||||
}
|
||||
flags |= TEVENT_FD_READ;
|
||||
}
|
||||
|
||||
if (events[i].portev_events & POLLIN) {
|
||||
flags |= TEVENT_FD_READ;
|
||||
}
|
||||
if (events[i].portev_events & POLLOUT) {
|
||||
flags |= TEVENT_FD_WRITE;
|
||||
}
|
||||
|
||||
if (flags & TEVENT_FD_WRITE) {
|
||||
if (fde->flags & TEVENT_FD_WRITE) {
|
||||
mpx_fde = NULL;
|
||||
}
|
||||
if (mpx_fde && (mpx_fde->flags & TEVENT_FD_WRITE)) {
|
||||
fde = mpx_fde;
|
||||
mpx_fde = NULL;
|
||||
}
|
||||
|
||||
if (mpx_fde) {
|
||||
/* Ensure we got the right fde. */
|
||||
if ((flags & fde->flags) == 0) {
|
||||
fde = mpx_fde;
|
||||
mpx_fde = NULL;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Make sure we only pass the flags
|
||||
* the handler is expecting.
|
||||
*/
|
||||
flags &= fde->flags;
|
||||
if (flags) {
|
||||
fde->handler(ev, fde, flags, fde->private_data);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
create a port_event_context structure.
|
||||
*/
|
||||
static int port_event_context_init(struct tevent_context *ev)
|
||||
{
|
||||
int ret;
|
||||
struct port_event_context *port_ev;
|
||||
|
||||
/*
|
||||
* We might be called during tevent_re_initialise()
|
||||
* which means we need to free our old additional_data.
|
||||
*/
|
||||
TALLOC_FREE(ev->additional_data);
|
||||
|
||||
port_ev = talloc_zero(ev, struct port_event_context);
|
||||
if (!port_ev) {
|
||||
return -1;
|
||||
}
|
||||
port_ev->ev = ev;
|
||||
port_ev->port_fd = -1;
|
||||
port_ev->pid = (pid_t)-1;
|
||||
|
||||
ret = port_init_ctx(port_ev);
|
||||
if (ret != 0) {
|
||||
talloc_free(port_ev);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ev->additional_data = port_ev;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
destroy an fd_event
|
||||
*/
|
||||
static int port_event_fd_destructor(struct tevent_fd *fde)
|
||||
{
|
||||
struct tevent_context *ev = fde->event_ctx;
|
||||
struct port_event_context *port_ev = NULL;
|
||||
struct tevent_fd *mpx_fde = NULL;
|
||||
int flags = (int)fde->flags;
|
||||
|
||||
if (ev == NULL) {
|
||||
return tevent_common_fd_destructor(fde);
|
||||
}
|
||||
|
||||
port_ev = talloc_get_type_abort(ev->additional_data,
|
||||
struct port_event_context);
|
||||
|
||||
DLIST_REMOVE(ev->fd_events, fde);
|
||||
|
||||
if (fde->additional_flags & PORT_ADDITIONAL_FD_FLAG_HAS_MPX) {
|
||||
mpx_fde = talloc_get_type_abort(fde->additional_data,
|
||||
struct tevent_fd);
|
||||
|
||||
fde->additional_flags &= ~PORT_ADDITIONAL_FD_FLAG_HAS_MPX;
|
||||
mpx_fde->additional_flags &= ~PORT_ADDITIONAL_FD_FLAG_HAS_MPX;
|
||||
|
||||
fde->additional_data = NULL;
|
||||
mpx_fde->additional_data = NULL;
|
||||
|
||||
fde->additional_flags &= PORT_ADDITIONAL_FD_FLAG_HAS_ASSOCIATION;
|
||||
}
|
||||
|
||||
(void)port_check_reopen(port_ev);
|
||||
|
||||
if (mpx_fde != NULL) {
|
||||
(void)port_update_event(port_ev, mpx_fde);
|
||||
}
|
||||
|
||||
fde->flags = 0;
|
||||
(void)port_update_event(port_ev, fde);
|
||||
fde->flags = flags;
|
||||
|
||||
return tevent_common_fd_destructor(fde);
|
||||
}
|
||||
|
||||
/*
|
||||
add a fd based event
|
||||
return NULL on failure (memory allocation error)
|
||||
*/
|
||||
static struct tevent_fd *port_event_add_fd(struct tevent_context *ev, TALLOC_CTX *mem_ctx,
|
||||
int fd, uint16_t flags,
|
||||
tevent_fd_handler_t handler,
|
||||
void *private_data,
|
||||
const char *handler_name,
|
||||
const char *location)
|
||||
{
|
||||
struct port_event_context *port_ev =
|
||||
talloc_get_type_abort(ev->additional_data,
|
||||
struct port_event_context);
|
||||
struct tevent_fd *fde;
|
||||
|
||||
fde = tevent_common_add_fd(ev, mem_ctx, fd, flags,
|
||||
handler, private_data,
|
||||
handler_name, location);
|
||||
if (!fde) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
talloc_set_destructor(fde, port_event_fd_destructor);
|
||||
|
||||
if (port_check_reopen(port_ev) != 0) {
|
||||
TALLOC_FREE(fde);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (port_update_event(port_ev, fde) != 0) {
|
||||
TALLOC_FREE(fde);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return fde;
|
||||
}
|
||||
|
||||
/*
|
||||
set the fd event flags
|
||||
*/
|
||||
static void port_event_set_fd_flags(struct tevent_fd *fde, uint16_t flags)
|
||||
{
|
||||
struct tevent_context *ev;
|
||||
struct port_event_context *port_ev;
|
||||
|
||||
if (fde->flags == flags) {
|
||||
return;
|
||||
}
|
||||
|
||||
ev = fde->event_ctx;
|
||||
port_ev = talloc_get_type_abort(ev->additional_data,
|
||||
struct port_event_context);
|
||||
|
||||
fde->flags = flags;
|
||||
|
||||
(void)port_check_reopen(port_ev);
|
||||
(void)port_update_event(port_ev, fde);
|
||||
}
|
||||
|
||||
/*
|
||||
do a single event loop using the events defined in ev
|
||||
*/
|
||||
static int port_event_loop_once(struct tevent_context *ev, const char *location)
|
||||
{
|
||||
struct port_event_context *port_ev = talloc_get_type(ev->additional_data,
|
||||
struct port_event_context);
|
||||
struct timeval tval;
|
||||
|
||||
if (ev->signal_events &&
|
||||
tevent_common_check_signal(ev)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (ev->immediate_events &&
|
||||
tevent_common_loop_immediate(ev)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
tval = tevent_common_loop_timer_delay(ev);
|
||||
if (tevent_timeval_is_zero(&tval)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (port_check_reopen(port_ev) != 0) {
|
||||
errno = EINVAL;
|
||||
return -1;
|
||||
}
|
||||
return port_event_loop(port_ev, &tval);
|
||||
}
|
||||
|
||||
static const struct tevent_ops port_event_ops = {
|
||||
.context_init = port_event_context_init,
|
||||
.add_fd = port_event_add_fd,
|
||||
.set_fd_close_fn = tevent_common_fd_set_close_fn,
|
||||
.get_fd_flags = tevent_common_fd_get_flags,
|
||||
.set_fd_flags = port_event_set_fd_flags,
|
||||
.add_timer = tevent_common_add_timer_v2,
|
||||
.schedule_immediate = tevent_common_schedule_immediate,
|
||||
.add_signal = tevent_common_add_signal,
|
||||
.loop_once = port_event_loop_once,
|
||||
.loop_wait = tevent_common_loop_wait,
|
||||
};
|
||||
|
||||
_PRIVATE_ bool tevent_port_init(void)
|
||||
{
|
||||
if (!tevent_register_backend("port", &port_event_ops)) {
|
||||
return false;
|
||||
}
|
||||
tevent_set_default_backend("port");
|
||||
return true;
|
||||
}
|
||||
@ -89,6 +89,9 @@ def build(bld):
|
||||
if bld.CONFIG_SET('HAVE_EPOLL'):
|
||||
SRC += ' tevent_epoll.c'
|
||||
|
||||
if bld.CONFIG_SET('HAVE_SOLARIS_PORTS'):
|
||||
SRC += ' tevent_port.c'
|
||||
|
||||
if bld.env.standalone_tevent:
|
||||
bld.env.PKGCONFIGDIR = '${LIBDIR}/pkgconfig'
|
||||
private_library = False
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user