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 26PUSH_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 33#define setgrent bb_internal_setgrent 34#define endgrent bb_internal_endgrent 35#define getgrent bb_internal_getgrent 36#define fgetgrent bb_internal_fgetgrent 37#define putgrent bb_internal_putgrent 38#define getgrgid bb_internal_getgrgid 39#define getgrnam bb_internal_getgrnam 40#define getgrent_r bb_internal_getgrent_r 41#define getgrgid_r bb_internal_getgrgid_r 42#define getgrnam_r bb_internal_getgrnam_r 43#define fgetgrent_r bb_internal_fgetgrent_r 44#define getgrouplist bb_internal_getgrouplist 45#define initgroups bb_internal_initgroups 46 47 48/* All function names below should be remapped by #defines above 49 * in order to not collide with libc names. */ 50 51 52/* Rewind the group-file stream. */ 53extern void setgrent(void); 54 55/* Close the group-file stream. */ 56extern void endgrent(void); 57 58#ifdef UNUSED_SINCE_WE_AVOID_STATIC_BUFS 59/* Read an entry from the group-file stream, opening it if necessary. */ 60extern struct group *getgrent(void); 61 62/* Read a group entry from STREAM. */ 63extern struct group *fgetgrent(FILE *__stream); 64 65/* Write the given entry onto the given stream. */ 66extern int putgrent(const struct group *__restrict __p, 67 FILE *__restrict __f); 68#endif 69 70/* Search for an entry with a matching group ID. */ 71extern struct group *getgrgid(gid_t __gid); 72 73/* Search for an entry with a matching group name. */ 74extern struct group *getgrnam(const char *__name); 75 76/* Reentrant versions of some of the functions above. 77 78 PLEASE NOTE: the `getgrent_r' function is not (yet) standardized. 79 The interface may change in later versions of this library. But 80 the interface is designed following the principals used for the 81 other reentrant functions so the chances are good this is what the 82 POSIX people would choose. */ 83 84extern int getgrent_r(struct group *__restrict __resultbuf, 85 char *__restrict __buffer, size_t __buflen, 86 struct group **__restrict __result); 87 88/* Search for an entry with a matching group ID. */ 89extern int getgrgid_r(gid_t __gid, struct group *__restrict __resultbuf, 90 char *__restrict __buffer, size_t __buflen, 91 struct group **__restrict __result); 92 93/* Search for an entry with a matching group name. */ 94extern int getgrnam_r(const char *__restrict __name, 95 struct group *__restrict __resultbuf, 96 char *__restrict __buffer, size_t __buflen, 97 struct group **__restrict __result); 98 99/* Read a group entry from STREAM. This function is not standardized 100 an probably never will. */ 101extern int fgetgrent_r(FILE *__restrict __stream, 102 struct group *__restrict __resultbuf, 103 char *__restrict __buffer, size_t __buflen, 104 struct group **__restrict __result); 105 106/* Store at most *NGROUPS members of the group set for USER into 107 *GROUPS. Also include GROUP. The actual number of groups found is 108 returned in *NGROUPS. Return -1 if the if *NGROUPS is too small. */ 109extern int getgrouplist(const char *__user, gid_t __group, 110 gid_t *__groups, int *__ngroups); 111 112/* Initialize the group set for the current user 113 by reading the group database and using all groups 114 of which USER is a member. Also include GROUP. */ 115extern int initgroups(const char *__user, gid_t __group); 116 117POP_SAVED_FUNCTION_VISIBILITY 118 119#endif 120