124 lines
3.9 KiB
C
124 lines
3.9 KiB
C
/*
|
|
* unistd.h - standard system calls
|
|
*/
|
|
/* $Id$ */
|
|
|
|
#ifndef _UNISTD_H
|
|
#define _UNISTD_H
|
|
|
|
#include <stddef.h>
|
|
#include <time.h>
|
|
|
|
/* Types */
|
|
|
|
typedef int pid_t;
|
|
typedef int mode_t;
|
|
|
|
typedef long suseconds_t;
|
|
|
|
/* Time handling. */
|
|
|
|
struct timeval
|
|
{
|
|
time_t tv_sec;
|
|
suseconds_t tv_usec;
|
|
};
|
|
|
|
struct timezone
|
|
{
|
|
int tz_minuteswest;
|
|
int tz_dsttime;
|
|
}; /* obsolete, unused */
|
|
|
|
extern int gettimeofday(struct timeval* tv, struct timezone* tz);
|
|
extern int settimeofday(const struct timeval* tv, const struct timezone* tz);
|
|
|
|
/* File access. */
|
|
|
|
enum
|
|
{
|
|
O_ACCMODE = 0x3,
|
|
|
|
O_RDONLY = 0,
|
|
O_WRONLY = 1,
|
|
O_RDWR = 2,
|
|
|
|
O_CREAT = 0x10,
|
|
O_TRUNC = 0x20,
|
|
O_APPEND = 0x40
|
|
};
|
|
|
|
extern int open(const char* path, int access, ...);
|
|
extern int creat(const char* path, mode_t mode);
|
|
extern int close(int d);
|
|
extern int read(int fd, void* buffer, size_t count);
|
|
extern int write(int fd, void* buffer, size_t count);
|
|
extern off_t lseek(int fildes, off_t offset, int whence);
|
|
extern int fcntl(int fd, int op, ...);
|
|
|
|
/* Special variables */
|
|
|
|
extern char** environ;
|
|
|
|
/* Implemented system calls */
|
|
|
|
extern void _exit(int);
|
|
extern pid_t getpid(void);
|
|
extern int brk(void* ptr);
|
|
extern void* sbrk(intptr_t increment);
|
|
extern int isatty(int d);
|
|
|
|
/* Signal handling */
|
|
|
|
typedef int sig_atomic_t;
|
|
|
|
#define SIG_ERR ((__sighandler_t) -1) /* Error return. */
|
|
#define SIG_DFL ((__sighandler_t) 0) /* Default action. */
|
|
#define SIG_IGN ((__sighandler_t) 1) /* Ignore signal. */
|
|
|
|
#define SIGHUP 1 /* Hangup (POSIX). */
|
|
#define SIGINT 2 /* Interrupt (ANSI). */
|
|
#define SIGQUIT 3 /* Quit (POSIX). */
|
|
#define SIGILL 4 /* Illegal instruction (ANSI). */
|
|
#define SIGTRAP 5 /* Trace trap (POSIX). */
|
|
#define SIGABRT 6 /* Abort (ANSI). */
|
|
#define SIGIOT 6 /* IOT trap (4.2 BSD). */
|
|
#define SIGBUS 7 /* BUS error (4.2 BSD). */
|
|
#define SIGFPE 8 /* Floating-point exception (ANSI). */
|
|
#define SIGKILL 9 /* Kill, unblockable (POSIX). */
|
|
#define SIGUSR1 10 /* User-defined signal 1 (POSIX). */
|
|
#define SIGSEGV 11 /* Segmentation violation (ANSI). */
|
|
#define SIGUSR2 12 /* User-defined signal 2 (POSIX). */
|
|
#define SIGPIPE 13 /* Broken pipe (POSIX). */
|
|
#define SIGALRM 14 /* Alarm clock (POSIX). */
|
|
#define SIGTERM 15 /* Termination (ANSI). */
|
|
#define SIGSTKFLT 16 /* Stack fault. */
|
|
#define SIGCLD SIGCHLD /* Same as SIGCHLD (System V). */
|
|
#define SIGCHLD 17 /* Child status has changed (POSIX). */
|
|
#define SIGCONT 18 /* Continue (POSIX). */
|
|
#define SIGSTOP 19 /* Stop, unblockable (POSIX). */
|
|
#define SIGTSTP 20 /* Keyboard stop (POSIX). */
|
|
#define SIGTTIN 21 /* Background read from tty (POSIX). */
|
|
#define SIGTTOU 22 /* Background write to tty (POSIX). */
|
|
#define SIGURG 23 /* Urgent condition on socket (4.2 BSD). */
|
|
#define SIGXCPU 24 /* CPU limit exceeded (4.2 BSD). */
|
|
#define SIGXFSZ 25 /* File size limit exceeded (4.2 BSD). */
|
|
#define SIGVTALRM 26 /* Virtual alarm clock (4.2 BSD). */
|
|
#define SIGPROF 27 /* Profiling alarm clock (4.2 BSD). */
|
|
#define SIGWINCH 28 /* Window size change (4.3 BSD, Sun). */
|
|
#define SIGPOLL SIGIO /* Pollable event occurred (System V). */
|
|
#define SIGIO 29 /* I/O now possible (4.2 BSD). */
|
|
#define SIGPWR 30 /* Power failure restart (System V). */
|
|
#define SIGSYS 31 /* Bad system call. */
|
|
#define SIGUNUSED 31
|
|
|
|
#define _NSIG 32 /* Biggest signal number + 1
|
|
(not including real-time signals). */
|
|
typedef void (*sighandler_t)(int);
|
|
extern sighandler_t signal(int signum, sighandler_t handler);
|
|
extern int raise(int signum);
|
|
|
|
|
|
|
|
#endif
|