src/system/libroot/posix/unistd/usergroup.cpp

   1 /*
   2  * Copyright 2008, Ingo Weinhold, ingo_weinhold@gmx.de. All rights reserved.
   3  * Copyright 2002-2006, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
   4  * Distributed under the terms of the MIT License.
   5  */
   6
   7
   8 #include <syscalls.h>
   9
  10 #include <ctype.h>
  11 #include <errno.h>
  12 #include <fcntl.h>
  13 #include <limits.h>
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <string.h>
  17 #include <unistd.h>
  18 #include <pwd.h>
  19
  20 #include <errno_private.h>
  21
  22
  23 template<typename T>
  24 static inline T
  25 set_errno_if_necessary(const T& result)
  26 {
  27         if (result < 0) {
  28                 __set_errno(result);
  29                 return -1;
  30         }
  31
  32         return result;
  33 }
  34
  35
  36 //      #pragma mark -
  37
  38
  39 gid_t
  40 getegid(void)
  41 {
  42         return _kern_getgid(true);
  43 }
  44
  45
  46 uid_t
  47 geteuid(void)
  48 {
  49         return _kern_getuid(true);
  50 }
  51
  52
  53 gid_t
  54 getgid(void)
  55 {
  56         return _kern_getgid(false);
  57 }
  58
  59
  60 uid_t
  61 getuid(void)
  62 {
  63         return _kern_getuid(false);
  64 }
  65
  66
  67 int
  68 setgid(gid_t gid)
  69 {
  70         return set_errno_if_necessary(_kern_setregid(gid, (gid_t)-1, true));
  71 }
  72
  73
  74 int
  75 setuid(uid_t uid)
  76 {
  77         return set_errno_if_necessary(_kern_setreuid(uid, (uid_t)-1, true));
  78 }
  79
  80
  81 int
  82 setegid(gid_t gid)
  83 {
  84         return set_errno_if_necessary(_kern_setregid((gid_t)-1, gid, false));
  85 }
  86
  87
  88 int
  89 seteuid(uid_t uid)
  90 {
  91         return set_errno_if_necessary(_kern_setreuid((uid_t)-1, uid, false));
  92 }
  93
  94
  95 int
  96 setregid(gid_t rgid, gid_t egid)
  97 {
  98         return set_errno_if_necessary(_kern_setregid(rgid, egid, false));
  99 }
 100
 101
 102 int
 103 setreuid(uid_t ruid, uid_t euid)
 104 {
 105         return set_errno_if_necessary(_kern_setreuid(ruid, euid, false));
 106 }
 107
 108
 109 int
 110 getgroups(int groupCount, gid_t groupList[])
 111 {
 112         return set_errno_if_necessary(_kern_getgroups(groupCount, groupList));
 113 }
 114
 115
 116 int
 117 setgroups(int groupCount, const gid_t* groupList)
 118 {
 119         return set_errno_if_necessary(_kern_setgroups(groupCount, groupList));
 120 }
 121
 122 // NOTE: getgrouplist() and initgroups() are implemented in grp.cpp.