apps/include/unistd.h

   1 /*
   2     meinOS - A unix-like x86 microkernel operating system
   3     Copyright (C) 2008  Janosch Gräf <janosch.graef@gmx.net>
   4
   5     This program is free software: you can redistribute it and/or modify
   6     it under the terms of the GNU Lesser General Public License as published by
   7     the Free Software Foundation, either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU Lesser General Public License for more details.
  14
  15     You should have received a copy of the GNU Lesser General Public License
  16     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #ifndef _UNISTD_H_
  20 #define _UNISTD_H_
  21
  22 #include <sys/types.h>
  23 #include <syscall.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <proc.h>
  27
  28 #ifndef NULL
  29   #define NULL ((void*)0)
  30 #endif
  31
  32 #define POSIX_VERSION    200112L
  33 #define POSIX2_VERSION   200112L
  34
  35 #define SEEK_SET         0 // Seek from beginning of file
  36 #define SEEK_CUR         1 // Seek from current position
  37 #define SEEK_END         2 // Seek from end of file
  38
  39 #define STDIN_FILENO     0
  40 #define STDOUT_FILENO    1
  41 #define STDERR_FILENO    2
  42
  43 #define _exit(r)    _Exit(r)
  44 #define getpid()    syscall_call(SYSCALL_PROC_GETPID,0)
  45 #define getppid()   getppidbypid(getpid())
  46
  47 // ID Bitmask
  48 //  1 - Real ID
  49 //  2 - Effective ID
  50 //  4 - Saved ID
  51
  52 #define getuid()    syscall_call(SYSCALL_PROC_GETUID,1,1)
  53 #define geteuid()   syscall_call(SYSCALL_PROC_GETUID,1,2)
  54 #define getgid()    syscall_call(SYSCALL_PROC_GETGID,1,1)
  55 #define getegid()   syscall_call(SYSCALL_PROC_GETGID,1,2)
  56
  57 #define setuid(uid)   syscall_call(SYSCALL_PROC_SETUID,2,7,uid)
  58 #define seteuid(uid)  syscall_call(SYSCALL_PROC_SETUID,2,2,uid)
  59 #define setreuid(uid) syscall_call(SYSCALL_PROC_SETUID,2,3,uid)
  60 #define setgid(gid)   syscall_call(SYSCALL_PROC_SETGID,2,7,gid)
  61 #define setegid(gid)  syscall_call(SYSCALL_PROC_SETGID,2,2,uid)
  62 #define setregid(gid) syscall_call(SYSCALL_PROC_SETGID,2,3,gid)
  63
  64 #define dup(fildes) dup2(fildes,0)
  65 // meinOS has no "ttys"
  66 #define isatty(fh) 0
  67 /// @todo When symlinks are (completely) implemented, this has to be rewritten
  68 #define lstat(path,buf) stat(path,buf)
  69
  70 char *optarg;
  71 int optind,opterr,optopt;
  72 char **environ;
  73
  74 int chown(const char *file,uid_t uid,gid_t gid);
  75 int fchown(int fildes,uid_t uid,gid_t gid);
  76 int symlink(const char *path1,const char *path2);
  77 ssize_t readlink(const char *path,char *buf,size_t bufsize);
  78 int symlink(const char *src,const char *dest);
  79 int link(const char *src, const char *dest);
  80 int access(const char *path,int amode);
  81 int chdir(const char *dir);
  82 int fchdir(int fildes);
  83 char *getcwd(char *, size_t);
  84 int dup2(int fildes,int fildes2);
  85 int close(int fildes);
  86 ssize_t read(int fildes,void *buf,size_t nbyte);
  87 ssize_t write(int fildes,const void *buf,size_t count);
  88 ssize_t pread(int fildes,void *buf,size_t count,off_t offset);
  89 ssize_t pwrite(int fildes,const void *buf,size_t count,off_t offset);
  90 off_t lseek(int fildes,off_t offset,int whence);
  91 int unlink(const char *path);
  92 int rmdir(const char *path);
  93 int ftruncate(int fildes,off_t length);
  94 int truncate(const char *path,off_t length);
  95 int pipe(int fildes[2]);
  96
  97 int gethostname(char *, size_t); ///< @todo implement uname(...);
  98 void swab(const void *buf1,void *buf2,ssize_t size);
  99 unsigned sleep(unsigned sec);
 100 int usleep(useconds_t usec);
 101
 102 int getopt(int argc, char *const *argv, const char *optstring);
 103
 104 int execl(const char *path, ... /*, (char *)0 */);
 105 int execv(const char *path, char *const argv[]);
 106 int execle(const char *path, ... /*, (char *)0, char *const envp[]*/);
 107 int execve(const char *path, char *const argv[], char *const envp[]);
 108 int execlp(const char *file, ... /*, (char *)0 */);
 109 int execvp(const char *file, char *const argv[]);
 110
 111 pid_t fork();
 112
 113 #endif