1 /* 2 * Copyright 2004-2008, 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 /* function arguments needed by lockf() */ 25 #define F_ULOCK 0 /* unlock locked sections */ 26 #define F_LOCK 1 /* lock a section for exclusive use */ 27 #define F_TLOCK 2 /* test and lock a section for exclusive use */ 28 #define F_TEST 3 /* test a section for locks by other processes */ 29 30 /* POSIX version support */ 31 #define _POSIX_VERSION (199009L) 32 33 /* pathconf() constants */ 34 #define _PC_CHOWN_RESTRICTED 1 35 #define _PC_MAX_CANON 2 36 #define _PC_MAX_INPUT 3 37 #define _PC_NAME_MAX 4 38 #define _PC_NO_TRUNC 5 39 #define _PC_PATH_MAX 6 40 #define _PC_PIPE_BUF 7 41 #define _PC_VDISABLE 8 42 #define _PC_LINK_MAX 25 43 #define _POSIX_CHOWN_RESTRICTED 9 44 #define _POSIX_JOB_CONTROL 10 45 #define _POSIX_NO_TRUNC 11 46 #define _POSIX_SAVED_IDS 12 47 #define _POSIX_VDISABLE ((cc_t) - 2) 48 49 /* sysconf() constants */ 50 #define _SC_ARG_MAX 15 51 #define _SC_CHILD_MAX 16 52 #define _SC_CLK_TCK 17 53 #define _SC_JOB_CONTROL 18 54 #define _SC_NGROUPS_MAX 19 55 #define _SC_OPEN_MAX 20 56 #define _SC_SAVED_IDS 21 57 #define _SC_STREAM_MAX 22 58 #define _SC_TZNAME_MAX 23 59 #define _SC_VERSION 24 60 #define _SC_GETGR_R_SIZE_MAX 25 61 #define _SC_GETPW_R_SIZE_MAX 26 62 #define _SC_PAGE_SIZE 27 63 #define _SC_PAGESIZE _SC_PAGE_SIZE 64 65 /* lseek() constants */ 66 #ifndef SEEK_SET 67 # define SEEK_SET 0 68 #endif 69 #ifndef SEEK_CUR 70 # define SEEK_CUR 1 71 #endif 72 #ifndef SEEK_END 73 # define SEEK_END 2 74 #endif 75 76 77 #ifdef __cplusplus 78 extern "C" { 79 #endif 80 81 /* file functions */ 82 extern int access(const char *path, int accessMode); 83 84 extern int chdir(const char *path); 85 extern int fchdir(int fd); 86 extern char *getcwd(char *buffer, size_t size); 87 88 extern int pipe(int fildes[2]); 89 extern int dup(int fd); 90 extern int dup2(int fd1, int fd2); 91 extern int close(int fd); 92 extern int link(const char *name, const char *new_name); 93 extern int unlink(const char *name); 94 extern int rmdir(const char *path); 95 96 extern ssize_t readlink(const char *path, char *buffer, size_t bufferSize); 97 extern int symlink(const char *from, const char *to); 98 99 extern int ftruncate(int fd, off_t newSize); 100 extern int truncate(const char *path, off_t newSize); 101 extern int ioctl(int fd, unsigned long op, ...); 102 103 extern ssize_t read(int fd, void *buffer, size_t count); 104 extern ssize_t read_pos(int fd, off_t pos, void *buffer, size_t count); 105 extern ssize_t pread(int fd, void *buffer, size_t count, off_t pos); 106 extern ssize_t write(int fd, const void *buffer, size_t count); 107 extern ssize_t write_pos(int fd, off_t pos, const void *buffer,size_t count); 108 extern ssize_t pwrite(int fd, const void *buffer, size_t count, off_t pos); 109 extern off_t lseek(int fd, off_t offset, int whence); 110 111 extern int sync(void); 112 extern int fsync(int fd); 113 114 extern int chown(const char *path, uid_t owner, gid_t group); 115 extern int fchown(int fd, uid_t owner, gid_t group); 116 extern int lchown(const char *path, uid_t owner, gid_t group); 117 118 extern int mknod(const char *name, mode_t mode, dev_t dev); 119 120 extern int getpagesize(void); 121 extern int getdtablesize(void); 122 extern long sysconf(int name); 123 extern long fpathconf(int fd, int name); 124 extern long pathconf(const char *path, int name); 125 extern size_t confstr(int name, char *buf, size_t len); 126 extern int lockf(int fd, int function, off_t size); 127 128 /* process functions */ 129 extern pid_t fork(void); 130 extern pid_t vfork(void); 131 extern int execve(const char *path, char * const argv[], char * const envp[]); 132 extern int execl(const char *path, const char *arg, ...); 133 extern int execv(const char *path, char *const *argv); 134 extern int execlp(const char *file, const char *arg, ...); 135 extern int execle(const char *path, const char *arg , ... /*, char **envp */); 136 extern int exect(const char *path, char *const *argv); 137 extern int execvp(const char *file, char *const *argv); 138 139 extern void _exit(int status); 140 141 extern pid_t tcgetpgrp(int fd); 142 extern int tcsetpgrp(int fd, pid_t pgrpid); 143 extern void *sbrk(long incr); 144 145 extern unsigned int alarm(unsigned int seconds); 146 extern useconds_t ualarm(useconds_t microSeconds, useconds_t interval); 147 extern unsigned int sleep(unsigned int seconds); 148 extern int usleep(unsigned int microSeconds); 149 extern clock_t clock(void); 150 extern int pause(void); 151 152 /* process */ 153 extern pid_t getpid(void); 154 extern pid_t getpgrp(void); 155 extern pid_t getppid(void); 156 extern pid_t getsid(pid_t pid); 157 extern pid_t getpgid(pid_t pid); 158 159 extern pid_t setsid(void); 160 extern int setpgid(pid_t pid, pid_t pgid); 161 extern pid_t setpgrp(void); 162 163 extern int chroot(const char *path); 164 165 /* access permissions */ 166 extern gid_t getegid(void); 167 extern uid_t geteuid(void); 168 extern gid_t getgid(void); 169 extern uid_t getuid(void); 170 171 extern int setgid(gid_t gid); 172 extern int setuid(uid_t uid); 173 extern int setegid(gid_t gid); 174 extern int seteuid(uid_t uid); 175 extern int setregid(gid_t rgid, gid_t egid); 176 extern int setreuid(uid_t ruid, uid_t euid); 177 178 extern int getgrouplist(const char* user, gid_t baseGroup, 179 gid_t* groupList, int* groupCount); 180 extern int getgroups(int groupCount, gid_t groupList[]); 181 extern int initgroups(const char* user, gid_t baseGroup); 182 extern int setgroups(int groupCount, const gid_t* groupList); 183 184 extern char *getlogin(void); 185 extern int getlogin_r(char *name, size_t nameSize); 186 187 /* host name */ 188 extern int sethostname(const char *hostName, size_t nameSize); 189 extern int gethostname(char *hostName, size_t nameSize); 190 191 /* tty */ 192 extern int isatty(int fd); 193 extern char *ttyname(int fd); 194 extern int ttyname_r(int fd, char *buffer, size_t bufferSize); 195 196 /* misc */ 197 extern char *crypt(const char *key, const char *salt); 198 extern void encrypt(char block[64], int edflag); 199 extern int getopt(int argc, char *const *argv, const char *shortOpts); 200 extern void swab(const void *src, void *dest, ssize_t nbytes); 201 202 /* getopt() related external variables */ 203 extern char *optarg; 204 extern int optind, opterr, optopt; 205 206 // ToDo: should be moved to stdlib.h 207 extern char **environ; 208 209 #ifdef __cplusplus 210 } 211 #endif 212 213 #endif /* _UNISTD_H_ */ 214