unistd.h revision 42123119
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_BARRIERS						(200112L)
43#define _POSIX_SEMAPHORES					(200112L)
44#define _POSIX_THREADS						(200112L)
45#define _POSIX_MAPPED_FILES					(200809L)
46#define _POSIX_THREAD_PROCESS_SHARED		(200809L)
47#define _POSIX_THREAD_ATTR_STACKADDR		(-1)	/* currently unsupported */
48#define _POSIX_THREAD_ATTR_STACKSIZE		(200809L)
49#define _POSIX_THREAD_PRIORITY_SCHEDULING	(-1)	/* currently unsupported */
50#define _POSIX_REALTIME_SIGNALS				(200809L)
51#define _POSIX_MEMORY_PROTECTION			(200809L)
52#define _POSIX_MONOTONIC_CLOCK				(200809L)
53#define _POSIX_TIMERS						(200809L)
54#define _POSIX_CPUTIME						(200809L)
55#define _POSIX_THREAD_CPUTIME				(200809L)
56
57
58/* pathconf() constants */
59/* BeOS supported values, do not touch */
60#define _PC_CHOWN_RESTRICTED	1
61#define _PC_MAX_CANON			2
62#define _PC_MAX_INPUT			3
63#define _PC_NAME_MAX			4
64#define _PC_NO_TRUNC			5
65#define _PC_PATH_MAX			6
66#define _PC_PIPE_BUF			7
67#define _PC_VDISABLE			8
68#define _PC_LINK_MAX			25
69/* new values */
70#define _PC_SYNC_IO				26
71#define _PC_ASYNC_IO			27
72#define _PC_PRIO_IO				28
73#define _PC_SOCK_MAXBUF			29
74#define _PC_FILESIZEBITS		30
75#define _PC_REC_INCR_XFER_SIZE	31
76#define _PC_REC_MAX_XFER_SIZE	32
77#define _PC_REC_MIN_XFER_SIZE	33
78#define _PC_REC_XFER_ALIGN		34
79#define _PC_ALLOC_SIZE_MIN		35
80#define _PC_SYMLINK_MAX			36
81#define _PC_2_SYMLINKS			37
82#define _PC_XATTR_EXISTS		38
83#define _PC_XATTR_ENABLED		39
84
85/* sysconf() constants */
86/* BeOS supported values, do not touch */
87#define _SC_ARG_MAX				15
88#define _SC_CHILD_MAX			16
89#define _SC_CLK_TCK				17
90#define _SC_JOB_CONTROL			18
91#define _SC_NGROUPS_MAX			19
92#define _SC_OPEN_MAX			20
93#define _SC_SAVED_IDS			21
94#define _SC_STREAM_MAX			22
95#define _SC_TZNAME_MAX			23
96#define _SC_VERSION				24
97/* new values */
98#define _SC_GETGR_R_SIZE_MAX	25
99#define _SC_GETPW_R_SIZE_MAX	26
100#define _SC_PAGE_SIZE			27
101#define _SC_PAGESIZE			_SC_PAGE_SIZE
102#define _SC_SEM_NSEMS_MAX		28
103#define _SC_SEM_VALUE_MAX		29
104#define _SC_SEMAPHORES			30
105#define _SC_THREADS				31
106/* TODO: check */
107#define _SC_IOV_MAX						32
108#define _SC_UIO_MAXIOV					_SC_IOV_MAX
109#define _SC_NPROCESSORS_CONF			34
110#define _SC_NPROCESSORS_ONLN			35
111#define _SC_ATEXIT_MAX					37
112#define _SC_PASS_MAX					39
113#define _SC_PHYS_PAGES					40
114#define _SC_AVPHYS_PAGES				41
115#define _SC_PIPE						42
116#define _SC_SELECT						43
117#define _SC_POLL						44
118#define _SC_MAPPED_FILES				45
119#define _SC_THREAD_PROCESS_SHARED		46
120#define _SC_THREAD_STACK_MIN			47
121#define _SC_THREAD_ATTR_STACKADDR		48
122#define _SC_THREAD_ATTR_STACKSIZE		49
123#define _SC_THREAD_PRIORITY_SCHEDULING	50
124#define _SC_REALTIME_SIGNALS			51
125#define	_SC_MEMORY_PROTECTION			52
126#define _SC_SIGQUEUE_MAX				53
127#define _SC_RTSIG_MAX					54
128#define _SC_MONOTONIC_CLOCK				55
129#define _SC_DELAYTIMER_MAX				56
130#define _SC_TIMER_MAX					57
131#define	_SC_TIMERS						58
132#define	_SC_CPUTIME						59
133#define	_SC_THREAD_CPUTIME				60
134
135
136/* confstr() constants */
137#define _CS_PATH				1
138
139/* lseek() constants */
140#ifndef SEEK_SET
141#	define SEEK_SET 0
142#endif
143#ifndef SEEK_CUR
144#	define SEEK_CUR 1
145#endif
146#ifndef SEEK_END
147#	define SEEK_END 2
148#endif
149
150
151#ifdef __cplusplus
152extern "C" {
153#endif
154
155/* file functions */
156extern int		access(const char *path, int accessMode);
157extern int		faccessat(int fd, const char *path, int accessMode, int flag);
158
159extern int		chdir(const char *path);
160extern int		fchdir(int fd);
161extern char		*getcwd(char *buffer, size_t size);
162
163extern int		pipe(int fildes[2]);
164extern int		dup(int fd);
165extern int		dup2(int fd1, int fd2);
166extern int		close(int fd);
167extern int		link(const char *toPath, const char *path);
168extern int		linkat(int toFD, const char *toPath, int pathFD,
169					const char *path, int flag);
170extern int		unlink(const char *name);
171extern int		unlinkat(int fd, const char *path, int flag);
172extern int		rmdir(const char *path);
173
174extern ssize_t  readlink(const char *path, char *buffer, size_t bufferSize);
175extern ssize_t	readlinkat(int fd, const char *path, char *buffer,
176					size_t bufferSize);
177extern int      symlink(const char *toPath, const char *symlinkPath);
178extern int		symlinkat(const char *toPath, int fd, const char *symlinkPath);
179
180extern int      ftruncate(int fd, off_t newSize);
181extern int      truncate(const char *path, off_t newSize);
182extern int		ioctl(int fd, unsigned long op, ...);
183
184extern ssize_t	read(int fd, void *buffer, size_t count);
185extern ssize_t  read_pos(int fd, off_t pos, void *buffer, size_t count);
186extern ssize_t	pread(int fd, void *buffer, size_t count, off_t pos);
187extern ssize_t	write(int fd, const void *buffer, size_t count);
188extern ssize_t  write_pos(int fd, off_t pos, const void *buffer,size_t count);
189extern ssize_t	pwrite(int fd, const void *buffer, size_t count, off_t pos);
190extern off_t	lseek(int fd, off_t offset, int whence);
191
192extern void		sync(void);
193extern int		fsync(int fd);
194
195extern int		chown(const char *path, uid_t owner, gid_t group);
196extern int		fchown(int fd, uid_t owner, gid_t group);
197extern int		lchown(const char *path, uid_t owner, gid_t group);
198extern int		fchownat(int fd, const char *path, uid_t owner, gid_t group,
199					int flag);
200
201extern int		getpagesize(void);
202extern int      getdtablesize(void);
203extern long		sysconf(int name);
204extern long		fpathconf(int fd, int name);
205extern long		pathconf(const char *path, int name);
206extern size_t	confstr(int name, char *buf, size_t len);
207extern int		lockf(int fd, int function, off_t size);
208
209/* process functions */
210extern pid_t	fork(void);
211extern pid_t	vfork(void);
212extern int		execve(const char *path, char * const argv[],
213					char *const environment[]);
214extern int		execl(const char *path, const char *arg, ...);
215extern int		execv(const char *path, char *const argv[]);
216extern int		execlp(const char *file, const char *arg, ...);
217extern int		execle(const char *path, const char *arg , ... /*, char **envp */);
218extern int		execvp(const char *file, char *const argv[]);
219extern int		execvpe(const char *file, char *const argv[],
220					char *const environment[]);
221
222extern void		_exit(int status) __attribute__ ((noreturn));
223
224extern pid_t	tcgetpgrp(int fd);
225extern int		tcsetpgrp(int fd, pid_t pgrpid);
226
227extern int		brk(void *addr);
228extern void		*sbrk(intptr_t increment);
229
230extern unsigned	int	alarm(unsigned int seconds);
231extern useconds_t	ualarm(useconds_t microSeconds, useconds_t interval);
232extern unsigned int	sleep(unsigned int seconds);
233extern int			usleep(unsigned int microSeconds);
234extern int 			pause(void);
235
236/* process */
237extern pid_t	getpid(void);
238extern pid_t	getpgrp(void);
239extern pid_t	getppid(void);
240extern pid_t	getsid(pid_t pid);
241extern pid_t	getpgid(pid_t pid);
242
243extern pid_t	setsid(void);
244extern int		setpgid(pid_t pid, pid_t pgid);
245extern pid_t	setpgrp(void);
246
247extern int		chroot(const char *path);
248
249/* access permissions */
250extern gid_t	getegid(void);
251extern uid_t	geteuid(void);
252extern gid_t	getgid(void);
253extern uid_t	getuid(void);
254
255extern int		setgid(gid_t gid);
256extern int		setuid(uid_t uid);
257extern int		setegid(gid_t gid);
258extern int		seteuid(uid_t uid);
259extern int		setregid(gid_t rgid, gid_t egid);
260extern int		setreuid(uid_t ruid, uid_t euid);
261
262extern int		getgrouplist(const char* user, gid_t baseGroup,
263					gid_t* groupList, int* groupCount);
264extern int		getgroups(int groupCount, gid_t groupList[]);
265extern int		initgroups(const char* user, gid_t baseGroup);
266extern int		setgroups(int groupCount, const gid_t* groupList);
267
268extern char		*getlogin(void);
269extern int		getlogin_r(char *name, size_t nameSize);
270
271/* host name */
272extern int		sethostname(const char *hostName, size_t nameSize);
273extern int		gethostname(char *hostName, size_t nameSize);
274
275/* tty */
276extern int		isatty(int fd);
277extern char		*ttyname(int fd);
278extern int		ttyname_r(int fd, char *buffer, size_t bufferSize);
279
280/* misc */
281extern char 	*crypt(const char *key, const char *salt);
282extern void 	encrypt(char block[64], int edflag);
283extern int		getopt(int argc, char *const *argv, const char *shortOpts);
284extern void 	swab(const void *src, void *dest, ssize_t nbytes);
285
286/* getopt() related external variables */
287extern char *optarg;
288extern int optind, opterr, optopt;
289
290#ifdef __cplusplus
291}
292#endif
293
294#endif  /* _UNISTD_H_ */
295