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Add a plugin interface to sudo main event loop.

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This commit is contained in:
Todd C. Miller
2019-11-15 13:36:01 -07:00
parent 58cede6fee
commit 5793023ffd
17 changed files with 1114 additions and 199 deletions
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44
lib/util/event.c
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@@ -284,6 +284,33 @@ sudo_ev_init(struct sudo_event *ev, int fd, short events,
debug_return;
}
/*
* Set a pre-allocated struct sudo_event.
* Allocates space for siginfo_t for SUDO_EV_SIGINFO as needed.
*/
int
sudo_ev_set_v1(struct sudo_event *ev, int fd, short events,
sudo_ev_callback_t callback, void *closure)
{
debug_decl(sudo_ev_set, SUDO_DEBUG_EVENT)
/* For SUDO_EV_SIGINFO we use a container to store closure + siginfo_t */
if (ISSET(events, SUDO_EV_SIGINFO)) {
struct sudo_ev_siginfo_container *container =
malloc(sizeof(*container) + sizeof(siginfo_t) - 1);
if (container == NULL) {
sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
"%s: unable to allocate siginfo container", __func__);
debug_return_int(-1);
}
container->closure = closure;
closure = container;
}
sudo_ev_init(ev, fd, events, callback, closure);
debug_return_int(0);
}
struct sudo_event *
sudo_ev_alloc_v1(int fd, short events, sudo_ev_callback_t callback, void *closure)
{
@@ -296,21 +323,10 @@ sudo_ev_alloc_v1(int fd, short events, sudo_ev_callback_t callback, void *closur
"%s: unable to allocate event", __func__);
debug_return_ptr(NULL);
}
/* For SUDO_EV_SIGINFO we use a container to store closure + siginfo_t */
if (ISSET(events, SUDO_EV_SIGINFO)) {
struct sudo_ev_siginfo_container *container =
malloc(sizeof(*container) + sizeof(siginfo_t) - 1);
if (container == NULL) {
sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
"%s: unable to allocate siginfo container", __func__);
free(ev);
debug_return_ptr(NULL);
}
container->closure = closure;
closure = container;
if (sudo_ev_set(ev, fd, events, callback, closure) == -1) {
free(ev);
debug_return_ptr(NULL);
}
sudo_ev_init(ev, fd, events, callback, closure);
debug_return_ptr(ev);
}