be3dc7223a
The tv_diff function can potentially overflow as soon as t2->tv_sec is larger than 2147483. This is very easily hit in ujail, after only 2147484 seconds of uptime, or 24.85 days. Improve the behaviour by changing the return type to int64_t. Fixes: FS#3943 Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
115 lines
2.7 KiB
C
115 lines
2.7 KiB
C
/*
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* uloop - event loop implementation
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*
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* Copyright (C) 2010-2013 Felix Fietkau <nbd@openwrt.org>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _ULOOP_H__
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#define _ULOOP_H__
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#include <sys/time.h>
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#include <sys/types.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <signal.h>
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#if defined(__APPLE__) || defined(__FreeBSD__)
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#define USE_KQUEUE
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#else
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#define USE_EPOLL
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#endif
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#include "list.h"
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struct uloop_fd;
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struct uloop_timeout;
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struct uloop_process;
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typedef void (*uloop_fd_handler)(struct uloop_fd *u, unsigned int events);
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typedef void (*uloop_timeout_handler)(struct uloop_timeout *t);
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typedef void (*uloop_process_handler)(struct uloop_process *c, int ret);
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#define ULOOP_READ (1 << 0)
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#define ULOOP_WRITE (1 << 1)
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#define ULOOP_EDGE_TRIGGER (1 << 2)
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#define ULOOP_BLOCKING (1 << 3)
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#define ULOOP_EVENT_MASK (ULOOP_READ | ULOOP_WRITE)
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/* internal flags */
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#define ULOOP_EVENT_BUFFERED (1 << 4)
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#ifdef USE_KQUEUE
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#define ULOOP_EDGE_DEFER (1 << 5)
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#endif
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#define ULOOP_ERROR_CB (1 << 6)
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struct uloop_fd
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{
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uloop_fd_handler cb;
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int fd;
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bool eof;
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bool error;
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bool registered;
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uint8_t flags;
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};
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struct uloop_timeout
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{
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struct list_head list;
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bool pending;
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uloop_timeout_handler cb;
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struct timeval time;
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};
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struct uloop_process
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{
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struct list_head list;
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bool pending;
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uloop_process_handler cb;
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pid_t pid;
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};
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extern bool uloop_cancelled;
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extern bool uloop_handle_sigchld;
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int uloop_fd_add(struct uloop_fd *sock, unsigned int flags);
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int uloop_fd_delete(struct uloop_fd *sock);
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int uloop_timeout_add(struct uloop_timeout *timeout);
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int uloop_timeout_set(struct uloop_timeout *timeout, int msecs);
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int uloop_timeout_cancel(struct uloop_timeout *timeout);
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int64_t uloop_timeout_remaining(struct uloop_timeout *timeout);
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int uloop_process_add(struct uloop_process *p);
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int uloop_process_delete(struct uloop_process *p);
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bool uloop_cancelling(void);
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static inline void uloop_end(void)
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{
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uloop_cancelled = true;
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}
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int uloop_init(void);
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int uloop_run_timeout(int timeout);
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static inline int uloop_run(void)
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{
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return uloop_run_timeout(-1);
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}
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void uloop_done(void);
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#endif
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