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117 lines
3.9 KiB
C
117 lines
3.9 KiB
C
/* Copyright (C) 1991,92,95,96,97,98,99,2000,01 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/*
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* POSIX Standard: 9.2.1 Group Database Access <grp.h>
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*/
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#if !defined CONFIG_USE_BB_PWD_GRP
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#include <grp.h>
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#else
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#ifndef _GRP_H
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#define _GRP_H 1
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#include <sys/types.h>
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#include <features.h>
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#include <stdio.h>
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/* The group structure. */
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struct group
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{
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char *gr_name; /* Group name. */
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char *gr_passwd; /* Password. */
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gid_t gr_gid; /* Group ID. */
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char **gr_mem; /* Member list. */
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};
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/* Rewind the group-file stream. */
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extern void setgrent (void);
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/* Close the group-file stream. */
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extern void endgrent (void);
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/* Read an entry from the group-file stream, opening it if necessary. */
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extern struct group *getgrent (void);
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/* Read a group entry from STREAM. */
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extern struct group *fgetgrent (FILE *__stream);
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/* Write the given entry onto the given stream. */
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extern int putgrent (__const struct group *__restrict __p,
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FILE *__restrict __f);
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/* Search for an entry with a matching group ID. */
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extern struct group *getgrgid (gid_t __gid);
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/* Search for an entry with a matching group name. */
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extern struct group *getgrnam (__const char *__name);
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/* Reentrant versions of some of the functions above.
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PLEASE NOTE: the `getgrent_r' function is not (yet) standardized.
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The interface may change in later versions of this library. But
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the interface is designed following the principals used for the
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other reentrant functions so the chances are good this is what the
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POSIX people would choose. */
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extern int getgrent_r (struct group *__restrict __resultbuf,
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char *__restrict __buffer, size_t __buflen,
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struct group **__restrict __result);
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/* Search for an entry with a matching group ID. */
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extern int getgrgid_r (gid_t __gid, struct group *__restrict __resultbuf,
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char *__restrict __buffer, size_t __buflen,
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struct group **__restrict __result);
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/* Search for an entry with a matching group name. */
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extern int getgrnam_r (__const char *__restrict __name,
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struct group *__restrict __resultbuf,
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char *__restrict __buffer, size_t __buflen,
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struct group **__restrict __result);
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/* Read a group entry from STREAM. This function is not standardized
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an probably never will. */
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extern int fgetgrent_r (FILE *__restrict __stream,
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struct group *__restrict __resultbuf,
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char *__restrict __buffer, size_t __buflen,
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struct group **__restrict __result);
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/* Set the group set for the current user to GROUPS (N of them). */
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extern int setgroups (size_t __n, __const gid_t *__groups);
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/* Store at most *NGROUPS members of the group set for USER into
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*GROUPS. Also include GROUP. The actual number of groups found is
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returned in *NGROUPS. Return -1 if the if *NGROUPS is too small. */
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extern int getgrouplist (__const char *__user, gid_t __group,
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gid_t *__groups, int *__ngroups);
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/* Initialize the group set for the current user
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by reading the group database and using all groups
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of which USER is a member. Also include GROUP. */
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extern int initgroups (__const char *__user, gid_t __group);
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#endif /* grp.h */
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#endif
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