mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
157 lines
5.5 KiB
C
157 lines
5.5 KiB
C
/* Copyright (C) 1996-2025 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, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
/* Declaration of types and functions for "shadow" storage of hashed
|
|
passphrases. The shadow database is like the user database, but is
|
|
only accessible with special privileges, so that malicious users
|
|
cannot retrieve everyone else's hashed passphrase to brute-force at
|
|
their convenience. */
|
|
|
|
#ifndef _SHADOW_H
|
|
#define _SHADOW_H 1
|
|
|
|
#include <features.h>
|
|
|
|
#include <paths.h>
|
|
|
|
#define __need_size_t
|
|
#include <stddef.h>
|
|
|
|
#include <bits/types/FILE.h>
|
|
|
|
/* Paths to the user database files. */
|
|
#define SHADOW _PATH_SHADOW
|
|
|
|
|
|
__BEGIN_DECLS
|
|
|
|
/* A record in the shadow database. */
|
|
struct spwd
|
|
{
|
|
char *sp_namp; /* Login name. */
|
|
char *sp_pwdp; /* Hashed passphrase. */
|
|
long int sp_lstchg; /* Date of last change. */
|
|
long int sp_min; /* Minimum number of days between changes. */
|
|
long int sp_max; /* Maximum number of days between changes. */
|
|
long int sp_warn; /* Number of days to warn user to change
|
|
the password. */
|
|
long int sp_inact; /* Number of days the account may be
|
|
inactive. */
|
|
long int sp_expire; /* Number of days since 1970-01-01 until
|
|
account expires. */
|
|
unsigned long int sp_flag; /* Reserved. */
|
|
};
|
|
|
|
|
|
/* Open database for reading.
|
|
|
|
This function is not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation it is a cancellation point and
|
|
therefore not marked with __THROW. */
|
|
extern void setspent (void);
|
|
|
|
/* Close database.
|
|
|
|
This function is not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation it is a cancellation point and
|
|
therefore not marked with __THROW. */
|
|
extern void endspent (void);
|
|
|
|
/* Get next entry from database, perhaps after opening the file.
|
|
|
|
This function is not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation it is a cancellation point and
|
|
therefore not marked with __THROW. */
|
|
extern struct spwd *getspent (void);
|
|
|
|
/* Get shadow entry matching NAME.
|
|
|
|
This function is not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation it is a cancellation point and
|
|
therefore not marked with __THROW. */
|
|
extern struct spwd *getspnam (const char *__name);
|
|
|
|
/* Read shadow entry from STRING.
|
|
|
|
This function is not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation it is a cancellation point and
|
|
therefore not marked with __THROW. */
|
|
extern struct spwd *sgetspent (const char *__string);
|
|
|
|
/* Read next shadow entry from STREAM.
|
|
|
|
This function is not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation it is a cancellation point and
|
|
therefore not marked with __THROW. */
|
|
extern struct spwd *fgetspent (FILE *__stream);
|
|
|
|
/* Write line containing shadow entry to stream.
|
|
|
|
This function is not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation it is a cancellation point and
|
|
therefore not marked with __THROW. */
|
|
extern int putspent (const struct spwd *__p, FILE *__stream);
|
|
|
|
|
|
#ifdef __USE_MISC
|
|
/* Reentrant versions of some of the functions above.
|
|
|
|
These functions are not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation they are cancellation points and
|
|
therefore not marked with __THROW. */
|
|
extern int getspent_r (struct spwd *__result_buf, char *__buffer,
|
|
size_t __buflen, struct spwd **__result)
|
|
__attr_access ((__write_only__, 2, 3));
|
|
|
|
extern int getspnam_r (const char *__name, struct spwd *__result_buf,
|
|
char *__buffer, size_t __buflen,
|
|
struct spwd **__result)
|
|
__attr_access ((__write_only__, 3, 4));
|
|
|
|
extern int sgetspent_r (const char *__string, struct spwd *__result_buf,
|
|
char *__buffer, size_t __buflen,
|
|
struct spwd **__result)
|
|
__attr_access ((__write_only__, 3, 4));
|
|
|
|
extern int fgetspent_r (FILE *__stream, struct spwd *__result_buf,
|
|
char *__buffer, size_t __buflen,
|
|
struct spwd **__result)
|
|
__attr_access ((__write_only__, 3, 4));
|
|
#endif /* misc */
|
|
|
|
|
|
/* The simple locking functionality provided here is not suitable for
|
|
multi-threaded applications. */
|
|
|
|
/* Request exclusive access to /etc/passwd and /etc/shadow. */
|
|
extern int lckpwdf (void) __THROW;
|
|
|
|
/* Release exclusive access to /etc/passwd and /etc/shadow. */
|
|
extern int ulckpwdf (void) __THROW;
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* shadow.h */
|