unistd.h revision 7aebec8d
1/*
2 * Copyright 2004-2015 Haiku, Inc. All Rights Reserved.
3 * Distributed under the terms of the MIT License.
4 */
5#ifndef _UNISTD_H_
6#define _UNISTD_H_
7
8
9#include <null.h>
10#include <stdint.h>
11#include <sys/types.h>
12
13
14/* access modes */
15#define R_OK	4
16#define W_OK	2
17#define X_OK	1
18#define F_OK	0
19
20/* standard file descriptors */
21#define STDIN_FILENO	0
22#define STDOUT_FILENO	1
23#define STDERR_FILENO	2
24
25/* function arguments needed by lockf() */
26#define F_ULOCK		0	/* unlock locked sections */
27#define F_LOCK		1	/* lock a section for exclusive use */
28#define F_TLOCK		2	/* test and lock a section for exclusive use */
29#define F_TEST		3	/* test a section for locks by other processes */
30
31/* POSIX version support */
32#define _POSIX_VERSION			(199009L)	/* TODO: Update! */
33
34#define _POSIX_CHOWN_RESTRICTED	1
35#define _POSIX_JOB_CONTROL		1
36#define _POSIX_NO_TRUNC			0
37#define _POSIX_SAVED_IDS		1
38#define _POSIX_VDISABLE			((unsigned char)-2)
39	/* TODO: Check this! */
40/* TODO: Update these to the current POSIX version! Ideally after actually
41	supporting the features. */
42#define _POSIX_SEMAPHORES					(200112L)
43#define _POSIX_THREADS						(200112L)
44#define _POSIX_MAPPED_FILES					(200809L)
45#define _POSIX_THREAD_PROCESS_SHARED		(200809L)
46#undef  _POSIX_THREAD_ATTR_STACKADDR		/* currently unsupported */
47#define _POSIX_THREAD_ATTR_STACKSIZE		(200809L)
48#undef  _POSIX_THREAD_PRIORITY_SCHEDULING	/* currently unsupported */
49#define _POSIX_REALTIME_SIGNALS				(200809L)
50#define _POSIX_MEMORY_PROTECTION			(200809L)
51#define _POSIX_MONOTONIC_CLOCK				(200809L)
52#define _POSIX_TIMERS						(200809L)
53#define _POSIX_CPUTIME						(200809L)
54#define _POSIX_THREAD_CPUTIME				(200809L)
55
56
57/* pathconf() constants */
58/* BeOS supported values, do not touch */
59#define _PC_CHOWN_RESTRICTED	1
60#define _PC_MAX_CANON			2
61#define _PC_MAX_INPUT			3
62#define _PC_NAME_MAX			4
63#define _PC_NO_TRUNC			5
64#define _PC_PATH_MAX			6
65#define _PC_PIPE_BUF			7
66#define _PC_VDISABLE			8
67#define _PC_LINK_MAX			25
68/* new values */
69#define _PC_SYNC_IO				26
70#define _PC_ASYNC_IO			27
71#define _PC_PRIO_IO				28
72#define _PC_SOCK_MAXBUF			29
73#define _PC_FILESIZEBITS		30
74#define _PC_REC_INCR_XFER_SIZE	31
75#define _PC_REC_MAX_XFER_SIZE	32
76#define _PC_REC_MIN_XFER_SIZE	33
77#define _PC_REC_XFER_ALIGN		34
78#define _PC_ALLOC_SIZE_MIN		35
79#define _PC_SYMLINK_MAX			36
80#define _PC_2_SYMLINKS			37
81#define _PC_XATTR_EXISTS		38
82#define _PC_XATTR_ENABLED		39
83
84/* sysconf() constants */
85/* BeOS supported values, do not touch */
86#define _SC_ARG_MAX				15
87#define _SC_CHILD_MAX			16
88#define _SC_CLK_TCK				17
89#define _SC_JOB_CONTROL			18
90#define _SC_NGROUPS_MAX			19
91#define _SC_OPEN_MAX			20
92#define _SC_SAVED_IDS			21
93#define _SC_STREAM_MAX			22
94#define _SC_TZNAME_MAX			23
95#define _SC_VERSION				24
96/* new values */
97#define _SC_GETGR_R_SIZE_MAX	25
98#define _SC_GETPW_R_SIZE_MAX	26
99#define _SC_PAGE_SIZE			27
100#define _SC_PAGESIZE			_SC_PAGE_SIZE
101#define _SC_SEM_NSEMS_MAX		28
102#define _SC_SEM_VALUE_MAX		29
103#define _SC_SEMAPHORES			30
104#define _SC_THREADS				31
105/* TODO: check */
106#define _SC_IOV_MAX						32
107#define _SC_UIO_MAXIOV					_SC_IOV_MAX
108#define _SC_NPROCESSORS_CONF			34
109#define _SC_NPROCESSORS_ONLN			35
110#define _SC_ATEXIT_MAX					37
111#define _SC_PASS_MAX					39
112#define _SC_PHYS_PAGES					40
113#define _SC_AVPHYS_PAGES				41
114#define _SC_PIPE						42
115#define _SC_SELECT						43
116#define _SC_POLL						44
117#define _SC_MAPPED_FILES				45
118#define _SC_THREAD_PROCESS_SHARED		46
119#define _SC_THREAD_STACK_MIN			47
120#define _SC_THREAD_ATTR_STACKADDR		48
121#define _SC_THREAD_ATTR_STACKSIZE		49
122#define _SC_THREAD_PRIORITY_SCHEDULING	50
123#define _SC_REALTIME_SIGNALS			51
124#define	_SC_MEMORY_PROTECTION			52
125#define _SC_SIGQUEUE_MAX				53
126#define _SC_RTSIG_MAX					54
127#define _SC_MONOTONIC_CLOCK				55
128#define _SC_DELAYTIMER_MAX				56
129#define _SC_TIMER_MAX					57
130#define	_SC_TIMERS						58
131#define	_SC_CPUTIME						59
132#define	_SC_THREAD_CPUTIME				60
133
134
135/* confstr() constants */
136#define _CS_PATH				1
137
138/* lseek() constants */
139#ifndef SEEK_SET
140#	define SEEK_SET 0
141#endif
142#ifndef SEEK_CUR
143#	define SEEK_CUR 1
144#endif
145#ifndef SEEK_END
146#	define SEEK_END 2
147#endif
148
149
150#ifdef __cplusplus
151extern "C" {
152#endif
153
154/* file functions */
155extern int		access(const char *path, int accessMode);
156extern int		faccessat(int fd, const char *path, int accessMode, int flag);
157
158extern int		chdir(const char *path);
159extern int		fchdir(int fd);
160extern char		*getcwd(char *buffer, size_t size);
161
162extern int		pipe(int fildes[2]);
163extern int		dup(int fd);
164extern int		dup2(int fd1, int fd2);
165extern int		close(int fd);
166extern int		link(const char *toPath, const char *path);
167extern int		linkat(int toFD, const char *toPath, int pathFD,
168					const char *path, int flag);
169extern int		unlink(const char *name);
170extern int		unlinkat(int fd, const char *path, int flag);
171extern int		rmdir(const char *path);
172
173extern ssize_t  readlink(const char *path, char *buffer, size_t bufferSize);
174extern ssize_t	readlinkat(int fd, const char *path, char *buffer,
175					size_t bufferSize);
176extern int      symlink(const char *toPath, const char *symlinkPath);
177extern int		symlinkat(const char *toPath, int fd, const char *symlinkPath);
178
179extern int      ftruncate(int fd, off_t newSize);
180extern int      truncate(const char *path, off_t newSize);
181extern int		ioctl(int fd, unsigned long op, ...);
182
183extern ssize_t	read(int fd, void *buffer, size_t count);
184extern ssize_t  read_pos(int fd, off_t pos, void *buffer, size_t count);
185extern ssize_t	pread(int fd, void *buffer, size_t count, off_t pos);
186extern ssize_t	write(int fd, const void *buffer, size_t count);
187extern ssize_t  write_pos(int fd, off_t pos, const void *buffer,size_t count);
188extern ssize_t	pwrite(int fd, const void *buffer, size_t count, off_t pos);
189extern off_t	lseek(int fd, off_t offset, int whence);
190
191extern void		sync(void);
192extern int		fsync(int fd);
193
194extern int		chown(const char *path, uid_t owner, gid_t group);
195extern int		fchown(int fd, uid_t owner, gid_t group);
196extern int		lchown(const char *path, uid_t owner, gid_t group);
197extern int		fchownat(int fd, const char *path, uid_t owner, gid_t group,
198					int flag);
199
200extern int		getpagesize(void);
201extern int      getdtablesize(void);
202extern long		sysconf(int name);
203extern long		fpathconf(int fd, int name);
204extern long		pathconf(const char *path, int name);
205extern size_t	confstr(int name, char *buf, size_t len);
206extern int		lockf(int fd, int function, off_t size);
207
208/* process functions */
209extern pid_t	fork(void);
210extern pid_t	vfork(void);
211extern int		execve(const char *path, char * const argv[],
212					char *const environment[]);
213extern int		execl(const char *path, const char *arg, ...);
214extern int		execv(const char *path, char *const argv[]);
215extern int		execlp(const char *file, const char *arg, ...);
216extern int		execle(const char *path, const char *arg , ... /*, char **envp */);
217extern int		execvp(const char *file, char *const argv[]);
218extern int		execvpe(const char *file, char *const argv[],
219					char *const environment[]);
220
221extern void		_exit(int status) __attribute__ ((noreturn));
222
223extern pid_t	tcgetpgrp(int fd);
224extern int		tcsetpgrp(int fd, pid_t pgrpid);
225
226extern int		brk(void *addr);
227extern void		*sbrk(intptr_t increment);
228
229extern unsigned	int	alarm(unsigned int seconds);
230extern useconds_t	ualarm(useconds_t microSeconds, useconds_t interval);
231extern unsigned int	sleep(unsigned int seconds);
232extern int			usleep(unsigned int microSeconds);
233extern int 			pause(void);
234
235/* process */
236extern pid_t	getpid(void);
237extern pid_t	getpgrp(void);
238extern pid_t	getppid(void);
239extern pid_t	getsid(pid_t pid);
240extern pid_t	getpgid(pid_t pid);
241
242extern pid_t	setsid(void);
243extern int		setpgid(pid_t pid, pid_t pgid);
244extern pid_t	setpgrp(void);
245
246extern int		chroot(const char *path);
247
248/* access permissions */
249extern gid_t	getegid(void);
250extern uid_t	geteuid(void);
251extern gid_t	getgid(void);
252extern uid_t	getuid(void);
253
254extern int		setgid(gid_t gid);
255extern int		setuid(uid_t uid);
256extern int		setegid(gid_t gid);
257extern int		seteuid(uid_t uid);
258extern int		setregid(gid_t rgid, gid_t egid);
259extern int		setreuid(uid_t ruid, uid_t euid);
260
261extern int		getgrouplist(const char* user, gid_t baseGroup,
262					gid_t* groupList, int* groupCount);
263extern int		getgroups(int groupCount, gid_t groupList[]);
264extern int		initgroups(const char* user, gid_t baseGroup);
265extern int		setgroups(int groupCount, const gid_t* groupList);
266
267extern char		*getlogin(void);
268extern int		getlogin_r(char *name, size_t nameSize);
269
270/* host name */
271extern int		sethostname(const char *hostName, size_t nameSize);
272extern int		gethostname(char *hostName, size_t nameSize);
273
274/* tty */
275extern int		isatty(int fd);
276extern char		*ttyname(int fd);
277extern int		ttyname_r(int fd, char *buffer, size_t bufferSize);
278
279/* misc */
280extern char 	*crypt(const char *key, const char *salt);
281extern void 	encrypt(char block[64], int edflag);
282extern int		getopt(int argc, char *const *argv, const char *shortOpts);
283extern void 	swab(const void *src, void *dest, ssize_t nbytes);
284
285/* getopt() related external variables */
286extern char *optarg;
287extern int optind, opterr, optopt;
288
289#ifdef __cplusplus
290}
291#endif
292
293#endif  /* _UNISTD_H_ */
294