lighttpd 1.4.x https://www.lighttpd.net/
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#ifndef _FDEVENT_H_
#define _FDEVENT_H_
#include "first.h"
#include "base_decls.h" /* handler_t */
struct log_error_st; /* declaration */
struct fdevents; /* declaration */
typedef struct fdevents fdevents;
typedef handler_t (*fdevent_handler)(void *ctx, int revents);
struct fdnode_st {
fdevent_handler handler;
void *ctx;
int fd;
int events;
int fde_ndx;
#ifdef HAVE_LIBEV
void *handler_ctx;
#endif
};
/* These must match POLL* values from operating system headers */
#define FDEVENT_IN 0x0001
#define FDEVENT_PRI 0x0002
#define FDEVENT_OUT 0x0004
#define FDEVENT_ERR 0x0008
#define FDEVENT_HUP 0x0010
#define FDEVENT_NVAL 0x0020
#if defined(__sun) && defined(__SVR4) /* Solaris */
#define FDEVENT_RDHUP 0x4000
#else
#define FDEVENT_RDHUP 0x2000
#endif
#define FDEVENT_STREAM_REQUEST BV(0)
#define FDEVENT_STREAM_REQUEST_BUFMIN BV(1)
#define FDEVENT_STREAM_REQUEST_POLLRDHUP BV(12)
#define FDEVENT_STREAM_REQUEST_TCP_FIN BV(13)
#define FDEVENT_STREAM_REQUEST_BACKEND_SHUT_WR BV(14)
#define FDEVENT_STREAM_REQUEST_POLLIN BV(15)
#define FDEVENT_STREAM_RESPONSE BV(0)
#define FDEVENT_STREAM_RESPONSE_BUFMIN BV(1)
#define FDEVENT_STREAM_RESPONSE_POLLRDHUP BV(15)
__attribute_cold__
int fdevent_config(const char **event_handler_name, struct log_error_st *errh);
__attribute_cold__
const char * fdevent_show_event_handlers(void);
__attribute_cold__
fdevents * fdevent_init(const char *event_handler, int *max_fds, int *cur_fds, struct log_error_st *errh);
__attribute_cold__
int fdevent_reset(fdevents *ev); /* "init" after fork() */
__attribute_cold__
void fdevent_free(fdevents *ev);
#define fdevent_fdnode_interest(fdn) (NULL != (fdn) ? (fdn)->events : 0)
void fdevent_fdnode_event_del(fdevents *ev, fdnode *fdn);
void fdevent_fdnode_event_set(fdevents *ev, fdnode *fdn, int events);
void fdevent_fdnode_event_add(fdevents *ev, fdnode *fdn, int event);
void fdevent_fdnode_event_clr(fdevents *ev, fdnode *fdn, int event);
int fdevent_poll(fdevents *ev, int timeout_ms);
fdnode * fdevent_register(fdevents *ev, int fd, fdevent_handler handler, void *ctx);
void fdevent_unregister(fdevents *ev, int fd);
void fdevent_sched_close(fdevents *ev, int fd, int issock);
void fdevent_setfd_cloexec(int fd);
void fdevent_clrfd_cloexec(int fd);
int fdevent_fcntl_set_nb(int fd);
int fdevent_fcntl_set_nb_cloexec(int fd);
int fdevent_fcntl_set_nb_cloexec_sock(int fd);
int fdevent_socket_cloexec(int domain, int type, int protocol);
int fdevent_socket_nb_cloexec(int domain, int type, int protocol);
int fdevent_dup_cloexec(int fd);
int fdevent_open_cloexec(const char *pathname, int symlinks, int flags, mode_t mode);
int fdevent_mkstemp_append(char *path);
int fdevent_rename(const char *oldpath, const char *newpath);
struct sockaddr;
int fdevent_accept_listenfd(int listenfd, struct sockaddr *addr, size_t *addrlen);
char ** fdevent_environ(void);
int fdevent_open_devnull(void);
int fdevent_open_dirname(char *path, int symlinks);
int fdevent_set_stdin_stdout_stderr(int fdin, int fdout, int fderr);
pid_t fdevent_fork_execve(const char *name, char *argv[], char *envp[], int fdin, int fdout, int fderr, int dfd);
int fdevent_waitpid(pid_t pid, int *status, int nb);
int fdevent_open_logger(const char *logger);
int fdevent_cycle_logger(const char *logger, int *curfd);
int fdevent_reaped_logger_pipe(pid_t pid);
int fdevent_waitpid_logger_pipe_pid(pid_t pid, time_t ts);
void fdevent_restart_logger_pipes(time_t ts);
void fdevent_close_logger_pipes(void);
void fdevent_breakagelog_logger_pipe(int fd);
void fdevent_clr_logger_pipe_pids(void);
ssize_t fdevent_socket_read_discard (int fd, char *buf, size_t sz, int family, int so_type);
int fdevent_ioctl_fionread (int fd, int fdfmt, int *toread);
int fdevent_connect_status(int fd);
/* fd must be TCP socket (AF_INET, AF_INET6), end-of-stream recv() 0 bytes */
int fdevent_is_tcp_half_closed(int fd);
int fdevent_set_tcp_nodelay (const int fd, const int opt);
int fdevent_set_so_reuseaddr (const int fd, const int opt);
char * fdevent_load_file (const char * const fn, off_t *lim, log_error_st *errh, void *(malloc_fn)(size_t), void(free_fn)(void *));
int fdevent_load_file_bytes (char *buf, off_t sz, off_t off, const char *fn, log_error_st *errh);
#endif