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apue.h
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apue.h
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/*
* Our own header, to be included before all standard system headers.
*/
#ifndef _APUE_H
#define _APUE_H
#include <errno.h> /* for definition of errno */
#include <stdarg.h> /* ISO C variable aruments */
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <termios.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <poll.h>
#include <errno.h>
#include <sys/types.h> /* some systems still require this */
#include <sys/ioctl.h>
#include <string.h> /* for convenience */
#include <unistd.h> /* for convenience */
#include <signal.h> /* for SIG_ERR */
#define MAXLINE 4096 /* max line length */
/*
* Default file access permissions for new files.
*/
#define FILE_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)
/*
* Default permissions for new directories.
*/
#define DIR_MODE (FILE_MODE | S_IXUSR | S_IXGRP | S_IXOTH)
typedef void Sigfunc (int); /* for signal handlers */
#define min(a,b) ((a) < (b) ? (a) : (b))
#define max(a,b) ((a) > (b) ? (a) : (b))
/*
* Prototypes for our own functions.
*/
char *path_alloc (size_t *); /* {Prog pathalloc} */
long open_max (void); /* {Prog openmax} */
int set_cloexec (int); /* {Prog setfd} */
void clr_fl (int, int);
void set_fl (int, int); /* {Prog setfl} */
void pr_exit (int); /* {Prog prexit} */
void pr_mask (const char *); /* {Prog prmask} */
Sigfunc *signal_intr (int, Sigfunc *); /* {Prog signal_intr_function} */
void daemonize (const char *); /* {Prog daemoninit} */
void sleep_us (unsigned int); /* {Ex sleepus} */
ssize_t readn (int, void *, size_t); /* {Prog readn_writen} */
ssize_t writen (int, const void *, size_t); /* {Prog readn_writen} */
int fd_pipe (int *); /* {Prog sock_fdpipe} */
int recv_fd (int, ssize_t (*func) (int, const void *, size_t)); /* {Prog recvfd_sockets} */
int send_fd (int, int); /* {Prog sendfd_sockets} */
int send_err (int, int, const char *); /* {Prog senderr} */
int serv_listen (const char *); /* {Prog servlisten_sockets} */
int serv_accept (int, uid_t *); /* {Prog servaccept_sockets} */
int cli_conn (const char *); /* {Prog cliconn_sockets} */
int buf_args (char *, int (*func) (int, char **)); /* {Prog bufargs} */
int tty_cbreak (int); /* {Prog raw} */
int tty_raw (int); /* {Prog raw} */
int tty_reset (int); /* {Prog raw} */
void tty_atexit (void); /* {Prog raw} */
struct termios *tty_termios (void); /* {Prog raw} */
int lock_reg (int, int, int, off_t, int, off_t); /* {Prog lockreg} */
#define read_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLK, F_RDLCK, (offset), (whence), (len))
#define readw_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLKW, F_RDLCK, (offset), (whence), (len))
#define write_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLK, F_WRLCK, (offset), (whence), (len))
#define writew_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLKW, F_WRLCK, (offset), (whence), (len))
#define un_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLK, F_UNLCK, (offset), (whence), (len))
pid_t lock_test (int, int, off_t, int, off_t); /* {Prog locktest} */
#define is_read_lockable(fd, offset, whence, len) \
(lock_test((fd), F_RDLCK, (offset), (whence), (len)) == 0)
#define is_write_lockable(fd, offset, whence, len) \
(lock_test((fd), F_WRLCK, (offset), (whence), (len)) == 0)
void err_msg (const char *, ...); /* {App misc_source} */
void err_dump (const char *, ...) __attribute__ ((noreturn));
void err_quit (const char *, ...) __attribute__ ((noreturn));
void err_cont (int, const char *, ...);
void err_exit (int, const char *, ...) __attribute__ ((noreturn));
void err_ret (const char *, ...);
void err_sys (const char *, ...) __attribute__ ((noreturn));
void log_msg (const char *, ...); /* {App misc_source} */
void log_open (const char *, int, int);
void log_quit (const char *, ...) __attribute__ ((noreturn));
void log_ret (const char *, ...);
void log_sys (const char *, ...) __attribute__ ((noreturn));
void log_exit (int, const char *, ...) __attribute__ ((noreturn));
void TELL_WAIT (void); /* parent/child from {Sec race_conditions} */
void TELL_PARENT (pid_t);
void TELL_CHILD (pid_t);
void WAIT_PARENT (void);
void WAIT_CHILD (void);
#endif /* _APUE_H */