busybox/include/pwd_.h

/* vi: set sw=4 ts=4: */
/* Copyright (C) 1991,92,95,96,97,98,99,2001 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: 9.2.2 User Database Access	<pwd.h>
 */

#ifndef	_PWD_H
#define	_PWD_H 1

#if __GNUC_PREREQ(4,1)
# pragma GCC visibility push(hidden)
#endif

/* The passwd structure.  */
struct passwd {
	char *pw_name;          /* Username.  */
	char *pw_passwd;        /* Password.  */
	uid_t pw_uid;           /* User ID.  */
	gid_t pw_gid;           /* Group ID.  */
	char *pw_gecos;         /* Real name.  */
	char *pw_dir;           /* Home directory.  */
	char *pw_shell;         /* Shell program.  */
};


#define setpwent    bb_internal_setpwent
#define endpwent    bb_internal_endpwent
#define getpwent    bb_internal_getpwent
#define fgetpwent   bb_internal_fgetpwent
#define putpwent    bb_internal_putpwent
#define getpwuid    bb_internal_getpwuid
#define getpwnam    bb_internal_getpwnam
#define getpwent_r  bb_internal_getpwent_r
#define getpwuid_r  bb_internal_getpwuid_r
#define getpwnam_r  bb_internal_getpwnam_r
#define fgetpwent_r bb_internal_fgetpwent_r
#define getpw       bb_internal_getpw


/* 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 password-file stream.  */
extern void setpwent(void);

/* Close the password-file stream.  */
extern void endpwent(void);

/* Read an entry from the password-file stream, opening it if necessary.  */
extern struct passwd *getpwent(void);

/* Read an entry from STREAM.  */
extern struct passwd *fgetpwent(FILE *__stream);

/* Write the given entry onto the given stream.  */
extern int putpwent(__const struct passwd *__restrict __p,
		     FILE *__restrict __f);

/* Search for an entry with a matching user ID.  */
extern struct passwd *getpwuid(uid_t __uid);

/* Search for an entry with a matching username.  */
extern struct passwd *getpwnam(__const char *__name);

/* Reentrant versions of some of the functions above.

   PLEASE NOTE: the `getpwent_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 getpwent_r(struct passwd *__restrict __resultbuf,
		       char *__restrict __buffer, size_t __buflen,
		       struct passwd **__restrict __result);

extern int getpwuid_r(uid_t __uid,
		       struct passwd *__restrict __resultbuf,
		       char *__restrict __buffer, size_t __buflen,
		       struct passwd **__restrict __result);

extern int getpwnam_r(__const char *__restrict __name,
		       struct passwd *__restrict __resultbuf,
		       char *__restrict __buffer, size_t __buflen,
		       struct passwd **__restrict __result);

/* Read an entry from STREAM.  This function is not standardized and
   probably never will.  */
extern int fgetpwent_r(FILE *__restrict __stream,
			struct passwd *__restrict __resultbuf,
			char *__restrict __buffer, size_t __buflen,
			struct passwd **__restrict __result);

/* Re-construct the password-file line for the given uid
   in the given buffer.  This knows the format that the caller
   will expect, but this need not be the format of the password file.  */
extern int getpw(uid_t __uid, char *__buffer);

#if __GNUC_PREREQ(4,1)
# pragma GCC visibility pop
#endif

#endif /* pwd.h  */