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https://gitlab.nic.cz/labs/bird.git
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22f54eaee6
Memory allocation is a fragile part of BIRD and we need checking that everybody is using the resource pools in an appropriate way. To assure this, all the resource pools are associated with locking domains and every resource manipulation is thoroughly checked whether the appropriate locking domain is locked. With transitive resource manipulation like resource dumping or mass free operations, domains are locked and unlocked on the go, thus we require pool domains to have higher order than their parent to allow for this transitive operations. Adding pool locking revealed some cases of insecure memory manipulation and this commit fixes that as well.
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
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* BIRD -- I/O and event loop
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#ifndef _BIRD_IO_LOOP_H_
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#define _BIRD_IO_LOOP_H_
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#include "nest/bird.h"
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#include "lib/lists.h"
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#include "lib/locking.h"
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#include "lib/resource.h"
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#include "lib/event.h"
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#include "lib/socket.h"
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extern struct birdloop main_birdloop;
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/* Start a new birdloop owned by given pool and domain */
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struct birdloop *birdloop_new(pool *p, uint order, btime max_latency, const char *fmt, ...);
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/* Stop the loop. At the end, the @stopped callback is called unlocked in tail
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* position to finish cleanup. Run birdloop_free() from that callback to free
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* the loop itself. */
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void birdloop_stop(struct birdloop *loop, void (*stopped)(void *data), void *data);
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void birdloop_stop_self(struct birdloop *loop, void (*stopped)(void *data), void *data);
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void birdloop_free(struct birdloop *loop);
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/* Get birdloop's event list */
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event_list *birdloop_event_list(struct birdloop *loop);
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/* Get birdloop's time heap */
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struct timeloop *birdloop_time_loop(struct birdloop *loop);
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#define birdloop_domain(l) (birdloop_time_loop((l))->domain)
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/* Get birdloop's pool */
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pool *birdloop_pool(struct birdloop *loop);
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/* Enter and exit the birdloop */
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void birdloop_enter(struct birdloop *loop);
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void birdloop_leave(struct birdloop *loop);
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_Bool birdloop_inside(struct birdloop *loop);
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void birdloop_mask_wakeups(struct birdloop *loop);
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void birdloop_unmask_wakeups(struct birdloop *loop);
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void birdloop_link(struct birdloop *loop);
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void birdloop_unlink(struct birdloop *loop);
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void birdloop_ping(struct birdloop *loop);
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struct birdloop_flag_handler {
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void (*hook)(struct birdloop_flag_handler *, u32 flags);
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void *data;
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};
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void birdloop_flag(struct birdloop *loop, u32 flag);
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void birdloop_flag_set_handler(struct birdloop *, struct birdloop_flag_handler *);
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/* Setup sockets */
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void birdloop_add_socket(struct birdloop *, struct birdsock *);
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void birdloop_remove_socket(struct birdloop *, struct birdsock *);
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void birdloop_init(void);
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/* Yield for a little while. Use only in special cases. */
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void birdloop_yield(void);
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#endif /* _BIRD_IO_LOOP_H_ */
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