Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/include/unistd.h
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
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1 /* The <unistd.h> header contains a few miscellaneous manifest constants. */ 2 3 #ifndef _UNISTD_H 4 #define _UNISTD_H 5 6 #ifndef _TYPES_H 7 #include <sys/types.h> 8 #endif 9 10 /* Values used by access(). POSIX Table 2-8. */ 11 #define F_OK 0 /* test if file exists */ 12 #define X_OK 1 /* test if file is executable */ 13 #define W_OK 2 /* test if file is writable */ 14 #define R_OK 4 /* test if file is readable */ 15 16 /* Values used for whence in lseek(fd, offset, whence). POSIX Table 2-9. */ 17 #define SEEK_SET 0 /* offset is absolute */ 18 #define SEEK_CUR 1 /* offset is relative to current position */ 19 #define SEEK_END 2 /* offset is relative to end of file */ 20 21 /* This value is required by POSIX Table 2-10. */ 22 #define _POSIX_VERSION 199009L /* which standard is being conformed to */ 23 24 /* These three definitions are required by POSIX Sec. 8.2.1.2. */ 25 #define STDIN_FILENO 0 /* file descriptor for stdin */ 26 #define STDOUT_FILENO 1 /* file descriptor for stdout */ 27 #define STDERR_FILENO 2 /* file descriptor for stderr */ 28 29 #ifdef _MINIX 30 /* How to exit the system or stop a server process. */ 31 #define RBT_HALT 0 32 #define RBT_REBOOT 1 33 #define RBT_PANIC 2 /* a server panics */ 34 #define RBT_MONITOR 3 /* let the monitor do this */ 35 #define RBT_RESET 4 /* hard reset the system */ 36 #endif 37 38 /* What system info to retrieve with sysgetinfo(). */ 39 #define SI_KINFO 0 /* get kernel info via PM */ 40 #define SI_PROC_ADDR 1 /* address of process table */ 41 #define SI_PROC_TAB 2 /* copy of entire process table */ 42 #define SI_DMAP_TAB 3 /* get device <-> driver mappings */ 43 #define SI_MEM_ALLOC 4 /* get memory allocation data */ 44 #define SI_DATA_STORE 5 /* get copy of data store */ 45 46 /* NULL must be defined in <unistd.h> according to POSIX Sec. 2.7.1. */ 47 #define NULL ((void *)0) 48 49 /* The following relate to configurable system variables. POSIX Table 4-2. */ 50 #define _SC_ARG_MAX 1 51 #define _SC_CHILD_MAX 2 52 #define _SC_CLOCKS_PER_SEC 3 53 #define _SC_CLK_TCK 3 54 #define _SC_NGROUPS_MAX 4 55 #define _SC_OPEN_MAX 5 56 #define _SC_JOB_CONTROL 6 57 #define _SC_SAVED_IDS 7 58 #define _SC_VERSION 8 59 #define _SC_STREAM_MAX 9 60 #define _SC_TZNAME_MAX 10 61 62 /* The following relate to configurable pathname variables. POSIX Table 5-2. */ 63 #define _PC_LINK_MAX 1 /* link count */ 64 #define _PC_MAX_CANON 2 /* size of the canonical input queue */ 65 #define _PC_MAX_INPUT 3 /* type-ahead buffer size */ 66 #define _PC_NAME_MAX 4 /* file name size */ 67 #define _PC_PATH_MAX 5 /* pathname size */ 68 #define _PC_PIPE_BUF 6 /* pipe size */ 69 #define _PC_NO_TRUNC 7 /* treatment of long name components */ 70 #define _PC_VDISABLE 8 /* tty disable */ 71 #define _PC_CHOWN_RESTRICTED 9 /* chown restricted or not */ 72 73 /* POSIX defines several options that may be implemented or not, at the 74 * implementer's whim. This implementer has made the following choices: 75 * 76 * _POSIX_JOB_CONTROL not defined: no job control 77 * _POSIX_SAVED_IDS not defined: no saved uid/gid 78 * _POSIX_NO_TRUNC defined as -1: long path names are truncated 79 * _POSIX_CHOWN_RESTRICTED defined: you can't give away files 80 * _POSIX_VDISABLE defined: tty functions can be disabled 81 */ 82 #define _POSIX_NO_TRUNC (-1) 83 #define _POSIX_CHOWN_RESTRICTED 1 84 85 /* Function Prototypes. */ 86 _PROTOTYPE( void _exit, (int _status) ); 87 _PROTOTYPE( int access, (const char *_path, int _amode) ); 88 _PROTOTYPE( unsigned int alarm, (unsigned int _seconds) ); 89 _PROTOTYPE( int chdir, (const char *_path) ); 90 _PROTOTYPE( int fchdir, (int fd) ); 91 _PROTOTYPE( int chown, (const char *_path, _mnx_Uid_t _owner, _mnx_Gid_t _group) ); 92 _PROTOTYPE( int close, (int _fd) ); 93 _PROTOTYPE( char *ctermid, (char *_s) ); 94 _PROTOTYPE( char *cuserid, (char *_s) ); 95 _PROTOTYPE( int dup, (int _fd) ); 96 _PROTOTYPE( int dup2, (int _fd, int _fd2) ); 97 _PROTOTYPE( int execl, (const char *_path, const char *_arg, ...) ); 98 _PROTOTYPE( int execle, (const char *_path, const char *_arg, ...) ); 99 _PROTOTYPE( int execlp, (const char *_file, const char *arg, ...) ); 100 _PROTOTYPE( int execv, (const char *_path, char *const _argv[]) ); 101 _PROTOTYPE( int execve, (const char *_path, char *const _argv[], 102 char *const _envp[]) ); 103 _PROTOTYPE( int execvp, (const char *_file, char *const _argv[]) ); 104 _PROTOTYPE( pid_t fork, (void) ); 105 _PROTOTYPE( long fpathconf, (int _fd, int _name) ); 106 _PROTOTYPE( char *getcwd, (char *_buf, size_t _size) ); 107 _PROTOTYPE( gid_t getegid, (void) ); 108 _PROTOTYPE( uid_t geteuid, (void) ); 109 _PROTOTYPE( gid_t getgid, (void) ); 110 _PROTOTYPE( int getgroups, (int _gidsetsize, gid_t _grouplist[]) ); 111 _PROTOTYPE( char *getlogin, (void) ); 112 _PROTOTYPE( pid_t getpgrp, (void) ); 113 _PROTOTYPE( pid_t getpid, (void) ); 114 _PROTOTYPE( pid_t getnpid, (int proc_nr) ); 115 _PROTOTYPE( pid_t getppid, (void) ); 116 _PROTOTYPE( uid_t getuid, (void) ); 117 _PROTOTYPE( int isatty, (int _fd) ); 118 _PROTOTYPE( int link, (const char *_existing, const char *_new) ); 119 _PROTOTYPE( off_t lseek, (int _fd, off_t _offset, int _whence) ); 120 _PROTOTYPE( long pathconf, (const char *_path, int _name) ); 121 _PROTOTYPE( int pause, (void) ); 122 _PROTOTYPE( int pipe, (int _fildes[2]) ); 123 _PROTOTYPE( ssize_t read, (int _fd, void *_buf, size_t _n) ); 124 _PROTOTYPE( int rmdir, (const char *_path) ); 125 _PROTOTYPE( int setgid, (_mnx_Gid_t _gid) ); 126 _PROTOTYPE( int setpgid, (pid_t _pid, pid_t _pgid) ); 127 _PROTOTYPE( pid_t setsid, (void) ); 128 _PROTOTYPE( int setuid, (_mnx_Uid_t _uid) ); 129 _PROTOTYPE( unsigned int sleep, (unsigned int _seconds) ); 130 _PROTOTYPE( long sysconf, (int _name) ); 131 _PROTOTYPE( pid_t tcgetpgrp, (int _fd) ); 132 _PROTOTYPE( int tcsetpgrp, (int _fd, pid_t _pgrp_id) ); 133 _PROTOTYPE( char *ttyname, (int _fd) ); 134 _PROTOTYPE( int unlink, (const char *_path) ); 135 _PROTOTYPE( ssize_t write, (int _fd, const void *_buf, size_t _n) ); 136 137 /* Open Group Base Specifications Issue 6 (not complete) */ 138 _PROTOTYPE( int symlink, (const char *path1, const char *path2) ); 139 _PROTOTYPE( int getopt, (int _argc, char **_argv, char *_opts) ); 140 extern char *optarg; 141 extern int optind, opterr, optopt; 142 _PROTOTYPE( int usleep, (useconds_t _useconds) ); 143 144 #ifdef _MINIX 145 #ifndef _TYPE_H 146 #include <minix/type.h> 147 #endif 148 _PROTOTYPE( int brk, (char *_addr) ); 149 _PROTOTYPE( int chroot, (const char *_name) ); 150 _PROTOTYPE( int mknod, (const char *_name, _mnx_Mode_t _mode, Dev_t _addr) ); 151 _PROTOTYPE( int mknod4, (const char *_name, _mnx_Mode_t _mode, Dev_t _addr, 152 long _size) ); 153 _PROTOTYPE( char *mktemp, (char *_template) ); 154 _PROTOTYPE( int mount, (char *_spec, char *_name, int _flag) ); 155 _PROTOTYPE( long ptrace, (int _req, pid_t _pid, long _addr, long _data) ); 156 _PROTOTYPE( char *sbrk, (int _incr) ); 157 _PROTOTYPE( int sync, (void) ); 158 _PROTOTYPE( int fsync, (int fd) ); 159 _PROTOTYPE( int umount, (const char *_name) ); 160 _PROTOTYPE( int reboot, (int _how, ...) ); 161 _PROTOTYPE( int gethostname, (char *_hostname, size_t _len) ); 162 _PROTOTYPE( int getdomainname, (char *_domain, size_t _len) ); 163 _PROTOTYPE( int ttyslot, (void) ); 164 _PROTOTYPE( int fttyslot, (int _fd) ); 165 _PROTOTYPE( char *crypt, (const char *_key, const char *_salt) ); 166 _PROTOTYPE( int getsysinfo, (int who, int what, void *where) ); 167 _PROTOTYPE( int getprocnr, (void) ); 168 _PROTOTYPE( int getnprocnr, (pid_t pid) ); 169 _PROTOTYPE( int getpprocnr, (void) ); 170 _PROTOTYPE( int findproc, (char *proc_name, int *proc_nr) ); 171 _PROTOTYPE( int allocmem, (phys_bytes size, phys_bytes *base) ); 172 _PROTOTYPE( int freemem, (phys_bytes size, phys_bytes base) ); 173 #define DEV_MAP 1 174 #define DEV_UNMAP 2 175 #define mapdriver(driver, device, style) devctl(DEV_MAP, driver, device, style) 176 #define unmapdriver(device) devctl(DEV_UNMAP, 0, device, 0) 177 _PROTOTYPE( int devctl, (int ctl_req, int driver, int device, int style)); 178 179 /* For compatibility with other Unix systems */ 180 _PROTOTYPE( int getpagesize, (void) ); 181 _PROTOTYPE( int setgroups, (int ngroups, const gid_t *gidset) ); 182 183 #endif 184 185 _PROTOTYPE( int readlink, (const char *, char *, int)); 186 _PROTOTYPE( int getopt, (int, char **, char *)); 187 extern int optind, opterr, optopt; 188 189 #endif /* _UNISTD_H */
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