include/grp_.h

   1 /* vi: set sw=4 ts=4: */
   2 /* Copyright (C) 1991,92,95,96,97,98,99,2000,01 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.
  19  */
  20 /*
  21  * POSIX Standard: 9.2.1 Group Database Access  <grp.h>
  22  */
  23 #ifndef BB_GRP_H
  24 #define BB_GRP_H 1
  25
  26 PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
  27
  28 /* This file is #included after #include <grp.h>
  29  * We will use libc-defined structures, but will #define function names
  30  * so that function calls are directed to bb_internal_XXX replacements
  31  */
  32 #undef endgrent
  33 #define endgrent     bb_internal_endgrent
  34 #define getgrgid     bb_internal_getgrgid
  35 #define getgrnam     bb_internal_getgrnam
  36 #define getgrouplist bb_internal_getgrouplist
  37 #define initgroups   bb_internal_initgroups
  38
  39 /* All function names below should be remapped by #defines above
  40  * in order to not collide with libc names. */
  41
  42 /* Close the group-file stream.  */
  43 void FAST_FUNC endgrent(void);
  44
  45 /* Search for an entry with a matching group ID.  */
  46 struct group* FAST_FUNC getgrgid(gid_t __gid);
  47
  48 /* Search for an entry with a matching group name.  */
  49 struct group* FAST_FUNC getgrnam(const char *__name);
  50
  51 /* Reentrant versions of some of the functions above. */
  52
  53 /* Store at most *NGROUPS members of the group set for USER into
  54    *GROUPS.  Also include GROUP.  The actual number of groups found is
  55    returned in *NGROUPS.  Return -1 if the if *NGROUPS is too small.  */
  56 int FAST_FUNC getgrouplist(const char *__user, gid_t __group,
  57                 gid_t *__groups, int *__ngroups);
  58
  59 /* Initialize the group set for the current user
  60    by reading the group database and using all groups
  61    of which USER is a member.  Also include GROUP.  */
  62 int FAST_FUNC initgroups(const char *__user, gid_t __group);
  63
  64 POP_SAVED_FUNCTION_VISIBILITY
  65
  66 #endif