106 lines
2.8 KiB
C
106 lines
2.8 KiB
C
#ifndef _UNISTD_H
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#define _UNISTD_H
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/*
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* Generic Posix prototypes used by the rest of the libc. Plats don't have to
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* implement these if they don't care about the functionality, but if they do,
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* they must conform to these prototypes.
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*/
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#include <ack/config.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <sys/types.h>
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#if ACKCONF_WANT_STANDARD_O
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/* A standard set of flags for read/write/creat and friends for platforms
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* where these aren't determined by the operating system. */
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enum
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{
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O_ACCMODE = 0x3,
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O_RDONLY = 0,
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O_WRONLY = 1,
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O_RDWR = 2,
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O_CREAT = 0100,
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O_TRUNC = 01000,
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O_APPEND = 02000,
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O_NONBLOCK = 04000
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};
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#else
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#include <ack/fcntl.h>
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#endif
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#if ACKCONF_WANT_STANDARD_SIGNALS
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/* A standard set of definitions for signal handling for platforms where these
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* aren't determined by the operating system. */
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typedef int sig_atomic_t;
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#define SIG_ERR ((sighandler_t) -1) /* Error return. */
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#define SIG_DFL ((sighandler_t) 0) /* Default action. */
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#define SIG_IGN ((sighandler_t) 1) /* Ignore signal. */
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#define SIGABRT 6 /* Abort (ANSI) */
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#define SIGILL 11 /* Illegal instruction */
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#define _NSIG 16 /* Biggest signal number + 1
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(not including real-time signals). */
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typedef uint16_t sigset_t;
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struct sigaction;
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#else
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#include <ack/signal.h>
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#endif
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typedef void (*sighandler_t)(int);
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/* Time handling. */
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struct timeval
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{
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time_t tv_sec;
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suseconds_t tv_usec;
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};
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struct timezone
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{
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int tz_minuteswest;
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int tz_dsttime;
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}; /* obsolete, unused */
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/* Special variables */
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extern char** environ;
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/* Implemented system calls */
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extern int brk(void* ptr);
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extern int close(int d);
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extern int creat(const char* path, mode_t mode);
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extern int execve(const char *path, char *const argv[], char *const envp[]);
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extern int fcntl(int fd, int op, ...);
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extern int gettimeofday(struct timeval* tv, struct timezone* tz);
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extern int isatty(int d);
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extern int isatty(int d);
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extern int kill(pid_t old, int sig);
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extern int open(const char* path, int access, ...);
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extern int raise(int signum);
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extern int settimeofday(const struct timeval* tv, const struct timezone* tz);
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extern int sigaction(int, const struct sigaction *, struct sigaction *);
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extern int sigprocmask(int, const sigset_t *, sigset_t *);
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extern int unlink(const char* path);
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extern off_t lseek(int fildes, off_t offset, int whence);
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extern pid_t fork(void);
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extern pid_t getpid(void);
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extern pid_t wait(int* wstatus);
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extern sighandler_t signal(int signum, sighandler_t handler);
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extern ssize_t read(int fd, void* buffer, size_t count);
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extern ssize_t write(int fd, void* buffer, size_t count);
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extern void _exit(int);
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extern void* sbrk(int increment);
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#endif
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