-#ifndef __CONFIG_GRP_H
-#define __CONFIG_GRP_H
+/* vi: set sw=4 ts=4: */
+/* Copyright (C) 1991,92,95,96,97,98,99,2000,01 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/*
+ * POSIX Standard: 9.2.1 Group Database Access <grp.h>
+ */
+
+#if !ENABLE_USE_BB_PWD_GRP
-#if !defined CONFIG_USE_BB_PWD_GRP
#include <grp.h>
#else
-#include <sys/types.h>
-#include <features.h>
-#include <stdio.h>
-
+#ifndef _GRP_H
+#define _GRP_H 1
-/* The group structure */
-struct group
-{
- char *gr_name; /* Group name. */
- char *gr_passwd; /* Password. */
- gid_t gr_gid; /* Group ID. */
- char **gr_mem; /* Member list. */
+/* The group structure. */
+struct group {
+ char *gr_name; /* Group name. */
+ char *gr_passwd; /* Password. */
+ gid_t gr_gid; /* Group ID. */
+ char **gr_mem; /* Member list. */
};
-extern void setgrent __P ((void));
-extern void endgrent __P ((void));
-extern struct group * getgrent __P ((void));
+/* We don't reimplement this, just supplying prototype */
+/* The function itself is in libc */
+/* Set the group set for the current user to GROUPS (N of them). */
+extern int setgroups(size_t __n, __const gid_t *__groups);
+
+
+#define setgrent bb_internal_setgrent
+#define endgrent bb_internal_endgrent
+#define getgrent bb_internal_getgrent
+#define fgetgrent bb_internal_fgetgrent
+#define putgrent bb_internal_putgrent
+#define getgrgid bb_internal_getgrgid
+#define getgrnam bb_internal_getgrnam
+#define getgrent_r bb_internal_getgrent_r
+#define getgrgid_r bb_internal_getgrgid_r
+#define getgrnam_r bb_internal_getgrnam_r
+#define fgetgrent_r bb_internal_fgetgrent_r
+#define getgrouplist bb_internal_getgrouplist
+#define initgroups bb_internal_initgroups
+
+
+/* All function names below should be remapped by #defines above
+ * in order to not collide with libc names.
+ * In theory it isn't necessary, but I saw weird interactions at link time.
+ * Let's play safe */
+
+
+/* Rewind the group-file stream. */
+extern void setgrent(void);
+
+/* Close the group-file stream. */
+extern void endgrent(void);
+
+/* Read an entry from the group-file stream, opening it if necessary. */
+extern struct group *getgrent(void);
+
+/* Read a group entry from STREAM. */
+extern struct group *fgetgrent(FILE *__stream);
+
+/* Write the given entry onto the given stream. */
+extern int putgrent(__const struct group *__restrict __p,
+ FILE *__restrict __f);
+
+/* Search for an entry with a matching group ID. */
+extern struct group *getgrgid(gid_t __gid);
+
+/* Search for an entry with a matching group name. */
+extern struct group *getgrnam(__const char *__name);
+
+/* Reentrant versions of some of the functions above.
+
+ PLEASE NOTE: the `getgrent_r' function is not (yet) standardized.
+ The interface may change in later versions of this library. But
+ the interface is designed following the principals used for the
+ other reentrant functions so the chances are good this is what the
+ POSIX people would choose. */
+
+extern int getgrent_r(struct group *__restrict __resultbuf,
+ char *__restrict __buffer, size_t __buflen,
+ struct group **__restrict __result);
+
+/* Search for an entry with a matching group ID. */
+extern int getgrgid_r(gid_t __gid, struct group *__restrict __resultbuf,
+ char *__restrict __buffer, size_t __buflen,
+ struct group **__restrict __result);
-extern struct group * getgrgid __P ((__const gid_t gid));
-extern struct group * getgrnam __P ((__const char * name));
+/* Search for an entry with a matching group name. */
+extern int getgrnam_r(__const char *__restrict __name,
+ struct group *__restrict __resultbuf,
+ char *__restrict __buffer, size_t __buflen,
+ struct group **__restrict __result);
-extern struct group * fgetgrent __P ((FILE * file));
+/* Read a group entry from STREAM. This function is not standardized
+ an probably never will. */
+extern int fgetgrent_r(FILE *__restrict __stream,
+ struct group *__restrict __resultbuf,
+ char *__restrict __buffer, size_t __buflen,
+ struct group **__restrict __result);
-extern int setgroups __P ((size_t n, __const gid_t * groups));
-extern int initgroups __P ((__const char * user, gid_t gid));
+/* Store at most *NGROUPS members of the group set for USER into
+ *GROUPS. Also include GROUP. The actual number of groups found is
+ returned in *NGROUPS. Return -1 if the if *NGROUPS is too small. */
+extern int getgrouplist(__const char *__user, gid_t __group,
+ gid_t *__groups, int *__ngroups);
-extern struct group * __getgrent __P ((int grp_fd));
+/* Initialize the group set for the current user
+ by reading the group database and using all groups
+ of which USER is a member. Also include GROUP. */
+extern int initgroups(__const char *__user, gid_t __group);
-#endif /* USE_SYSTEM_PWD_GRP */
-#endif /* __CONFIG_GRP_H */
+#endif /* grp.h */
+#endif
projects / oweals / busybox.git / blobdiff