xref: /haiku/headers/posix/unistd.h (revision 24159a0c7d6d6dcba9f2a0c1a7c08d2c8167f21b)
1 /*
2  * Copyright 2004-2005, 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 <sys/types.h>
11 
12 
13 /* access modes */
14 #define R_OK	4
15 #define W_OK	2
16 #define X_OK	1
17 #define F_OK	0
18 
19 /* standard file descriptors */
20 #define STDIN_FILENO	0
21 #define STDOUT_FILENO	1
22 #define STDERR_FILENO	2
23 
24 /* POSIX version support */
25 #define _POSIX_VERSION			(199009L)
26 
27 /* pathconf() constants */
28 #define _PC_CHOWN_RESTRICTED	1
29 #define _PC_MAX_CANON			2
30 #define _PC_MAX_INPUT			3
31 #define _PC_NAME_MAX			4
32 #define _PC_NO_TRUNC			5
33 #define _PC_PATH_MAX			6
34 #define _PC_PIPE_BUF			7
35 #define _PC_VDISABLE			8
36 #define _PC_LINK_MAX			25
37 #define _POSIX_CHOWN_RESTRICTED	9
38 #define _POSIX_JOB_CONTROL		10
39 #define _POSIX_NO_TRUNC			11
40 #define _POSIX_SAVED_IDS		12
41 #define _POSIX_VDISABLE			((cc_t) - 2)
42 
43 /* sysconf() constants */
44 #define _SC_ARG_MAX				15
45 #define _SC_CHILD_MAX			16
46 #define _SC_CLK_TCK				17
47 #define _SC_JOB_CONTROL			18
48 #define _SC_NGROUPS_MAX			19
49 #define _SC_OPEN_MAX			20
50 #define _SC_SAVED_IDS			21
51 #define _SC_STREAM_MAX			22
52 #define _SC_TZNAME_MAX			23
53 #define _SC_VERSION				24
54 
55 /* lseek() constants */
56 #ifndef SEEK_SET
57 #	define SEEK_SET 0
58 #endif
59 #ifndef SEEK_CUR
60 #	define SEEK_CUR 1
61 #endif
62 #ifndef SEEK_END
63 #	define SEEK_END 2
64 #endif
65 
66 
67 #ifdef __cplusplus
68 extern "C" {
69 #endif
70 
71 /* file functions */
72 extern int		access(const char *path, int accessMode);
73 
74 extern int		chdir(const char *path);
75 extern int		fchdir(int fd);
76 extern char		*getcwd(char *buffer, size_t size);
77 
78 extern int		pipe(int fildes[2]);
79 extern int		dup(int fd);
80 extern int		dup2(int fd1, int fd2);
81 extern int		close(int fd);
82 extern int		link(const char *name, const char *new_name);
83 extern int		unlink(const char *name);
84 extern int		rmdir(const char *path);
85 
86 extern ssize_t  readlink(const char *path, char *buffer, size_t bufferSize);
87 extern int      symlink(const char *from, const char *to);
88 
89 extern int      ftruncate(int fd, off_t newSize);
90 extern int      truncate(const char *path, off_t newSize);
91 extern int		ioctl(int fd, unsigned long op, ...);
92 
93 extern ssize_t	read(int fd, void *buffer, size_t count);
94 extern ssize_t  read_pos(int fd, off_t pos, void *buffer, size_t count);
95 extern ssize_t	pread(int fd, void *buffer, size_t count, off_t pos);
96 extern ssize_t	write(int fd, const void *buffer, size_t count);
97 extern ssize_t  write_pos(int fd, off_t pos, const void *buffer,size_t count);
98 extern ssize_t	pwrite(int fd, const void *buffer, size_t count, off_t pos);
99 extern off_t	lseek(int fd, off_t offset, int whence);
100 
101 extern int		sync(void);
102 extern int		fsync(int fd);
103 
104 extern int		chown(const char *path, uid_t owner, gid_t group);
105 extern int		fchown(int fd, uid_t owner, gid_t group);
106 extern int		lchown(const char *path, uid_t owner, gid_t group);
107 
108 extern int		mknod(const char *name, mode_t mode, dev_t dev);
109 
110 extern int      getdtablesize(void);
111 extern long		sysconf(int name);
112 extern long		fpathconf(int fd, int name);
113 extern long		pathconf(const char *path, int name);
114 
115 /* process functions */
116 extern pid_t	fork(void);
117 extern int		execve(const char *path, char * const argv[], char * const envp[]);
118 extern int		execl(const char *path, const char *arg, ...);
119 extern int		execv(const char *path, char *const *argv);
120 extern int		execlp(const char *file, const char *arg, ...);
121 extern int		execle(const char *path, const char *arg , ... /*, char **envp */);
122 extern int		exect(const char *path, char *const *argv);
123 extern int		execvp(const char *file, char *const *argv);
124 
125 extern void		_exit(int status);
126 
127 extern pid_t	tcgetpgrp(int fd);
128 extern int		tcsetpgrp(int fd, pid_t pgrpid);
129 extern void		*sbrk(long incr);
130 
131 extern unsigned	int	alarm(unsigned int seconds);
132 extern useconds_t	ualarm(useconds_t microSeconds, useconds_t interval);
133 extern unsigned int	sleep(unsigned int seconds);
134 extern int			usleep(unsigned int microSeconds);
135 extern clock_t		clock(void);
136 extern int 			pause(void);
137 
138 /* process */
139 extern pid_t	getpid(void);
140 extern pid_t	getpgrp(void);
141 extern pid_t	getppid(void);
142 extern pid_t	getsid(pid_t pid);
143 extern pid_t	getpgid(pid_t pid);
144 
145 extern pid_t	setsid(void);
146 extern int	setpgid(pid_t pid, pid_t pgid);
147 extern int 	setpgrp(void);
148 
149 /* access permissions */
150 extern gid_t	getegid(void);
151 extern uid_t	geteuid(void);
152 extern gid_t	getgid(void);
153 extern int		getgroups(int groupSize, gid_t groupList[]);
154 extern uid_t	getuid(void);
155 
156 extern int		setgid(gid_t gid);
157 extern int		setuid(uid_t uid);
158 extern int		setegid(gid_t gid);
159 extern int		seteuid(uid_t uid);
160 
161 extern char		*getlogin(void);
162 extern int		getlogin_r(char *name, size_t nameSize);
163 
164 /* host name */
165 extern int		sethostname(const char *hostName, size_t nameSize);
166 extern int		gethostname(char *hostName, size_t nameSize);
167 
168 /* tty */
169 extern int		isatty(int fd);
170 extern char		*ttyname(int fd);
171 extern int		ttyname_r(int fd, char *buffer, size_t bufferSize);
172 
173 /* misc */
174 extern char 	*crypt(const char *key, const char *salt);
175 extern int		getopt(int argc, char *const *argv, const char *shortOpts);
176 
177 /* getopt() related external variables */
178 extern char *optarg;
179 extern int optind, opterr, optopt;
180 
181 // ToDo: should be moved to stdlib.h
182 extern char **environ;
183 
184 #ifdef __cplusplus
185 }
186 #endif
187 
188 #endif  /* _UNISTD_H_ */
189