/* Copyright (C) 1991-2018 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, see

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<http://www.gnu.org/licenses/>. */

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/*

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* POSIX Standard: 9.2.2 User Database Access <pwd.h>

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*/

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#ifndef _PWD_H

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#define _PWD_H 1

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#include <features.h>

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__BEGIN_DECLS

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#include <bits/types.h>

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#define __need_size_t

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#include <stddef.h>

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#if defined __USE_XOPEN || defined __USE_XOPEN2K

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/* The Single Unix specification says that some more types are

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available here. */

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# ifndef __gid_t_defined

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typedef __gid_t gid_t;

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# define __gid_t_defined

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# endif

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# ifndef __uid_t_defined

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typedef __uid_t uid_t;

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# define __uid_t_defined

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# endif

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#endif

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/* A record in the user database. */

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struct passwd

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{

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char *pw_name; /* Username. */

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char *pw_passwd; /* Hashed passphrase, if shadow database

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not in use (see shadow.h). */

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__uid_t pw_uid; /* User ID. */

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__gid_t pw_gid; /* Group ID. */

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char *pw_gecos; /* Real name. */

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char *pw_dir; /* Home directory. */

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char *pw_shell; /* Shell program. */

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};

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#ifdef __USE_MISC

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# include <bits/types/FILE.h>

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#endif

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#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED

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/* Rewind the user database stream.

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This function is a possible cancellation point and therefore not

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marked with __THROW. */

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extern void setpwent (void);

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/* Close the user database stream.

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This function is a possible cancellation point and therefore not

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marked with __THROW. */

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extern void endpwent (void);

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/* Read an entry from the user database stream, opening it if necessary.

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This function is a possible cancellation point and therefore not

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marked with __THROW. */

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extern struct passwd *getpwent (void);

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#endif

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#ifdef __USE_MISC

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/* Read a user database entry from STREAM.

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This function is not part of POSIX and therefore no official

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cancellation point. But due to similarity with an POSIX interface

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or due to the implementation it is a cancellation point and

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therefore not marked with __THROW. */

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extern struct passwd *fgetpwent (FILE *__stream) __nonnull ((1));

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/* Write a given user database entry onto the given stream.

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This function is not part of POSIX and therefore no official

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cancellation point. But due to similarity with an POSIX interface

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or due to the implementation it is a cancellation point and

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therefore not marked with __THROW. */

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extern int putpwent (const struct passwd *__restrict __p,

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FILE *__restrict __f);

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#endif

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/* Retrieve the user database entry for the given user ID.

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This function is a possible cancellation point and therefore not

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marked with __THROW. */

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extern struct passwd *getpwuid (__uid_t __uid);

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/* Retrieve the user database entry for the given username.

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This function is a possible cancellation point and therefore not

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marked with __THROW. */

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extern struct passwd *getpwnam (const char *__name) __nonnull ((1));

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#ifdef __USE_POSIX

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# ifdef __USE_MISC

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/* Reasonable value for the buffer sized used in the reentrant

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functions below. But better use `sysconf'. */

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# define NSS_BUFLEN_PASSWD 1024

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# endif

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/* Reentrant versions of some of the functions above.

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PLEASE NOTE: the `getpwent_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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# ifdef __USE_MISC

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/* This function is not part of POSIX and therefore no official

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cancellation point. But due to similarity with an POSIX interface

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or due to the implementation it is a cancellation point and

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therefore not marked with __THROW. */

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extern int getpwent_r (struct passwd *__restrict __resultbuf,

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char *__restrict __buffer, size_t __buflen,

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struct passwd **__restrict __result)

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__nonnull ((1, 2, 4));

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# endif

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extern int getpwuid_r (__uid_t __uid,

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struct passwd *__restrict __resultbuf,

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char *__restrict __buffer, size_t __buflen,

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struct passwd **__restrict __result)

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__nonnull ((2, 3, 5));

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extern int getpwnam_r (const char *__restrict __name,

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struct passwd *__restrict __resultbuf,

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char *__restrict __buffer, size_t __buflen,

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struct passwd **__restrict __result)

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__nonnull ((1, 2, 3, 5));

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# ifdef __USE_MISC

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/* Read a user database entry from STREAM. This function is not

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standardized and probably never will.

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This function is not part of POSIX and therefore no official

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cancellation point. But due to similarity with an POSIX interface

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or due to the implementation it is a cancellation point and

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therefore not marked with __THROW. */

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extern int fgetpwent_r (FILE *__restrict __stream,

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struct passwd *__restrict __resultbuf,

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char *__restrict __buffer, size_t __buflen,

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struct passwd **__restrict __result)

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__nonnull ((1, 2, 3, 5));

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# endif

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#endif /* POSIX or reentrant */

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#ifdef __USE_GNU

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/* Write a traditional /etc/passwd line, based on the user database

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entry for the given UID, to BUFFER; space for BUFFER must be

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allocated by the caller.

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This function is not part of POSIX and therefore no official

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cancellation point. But due to similarity with an POSIX interface

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or due to the implementation it is a cancellation point and

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therefore not marked with __THROW. */

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extern int getpw (__uid_t __uid, char *__buffer);

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#endif

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__END_DECLS

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#endif /* pwd.h */

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