-/* Copyright (C) 1996 Free Software Foundation, Inc.
+/* Copyright (C) 1996-1998,2000,2001,2002,2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>
and Paul Janzen <pcj@primenet.com>, 1996.
The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include <assert.h>
-#include <db.h>
-#include <fcntl.h>
-#include <libc-lock.h>
-#include <limits.h>
-#include <stdio.h>
+ 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <bits/libc-lock.h>
#include <stdlib.h>
-#include <string.h>
#include <utmp.h>
-#include <gnu/lib-names.h>
-#include <sys/stat.h>
#include "utmp-private.h"
-#include "../elf/link.h"
-
-/* The various backends we have. */
-static int __setutent_unknown (int reset);
-static int __getutent_r_unknown (struct utmp *buffer, struct utmp **result);
-static void __pututline_unknown (const struct utmp *data);
-static void __endutent_unknown (void);
+/* Functions defined here. */
+static int setutent_unknown (void);
+static int getutent_r_unknown (struct utmp *buffer, struct utmp **result);
+static int getutid_r_unknown (const struct utmp *line, struct utmp *buffer,
+ struct utmp **result);
+static int getutline_r_unknown (const struct utmp *id, struct utmp *buffer,
+ struct utmp **result);
+static struct utmp *pututline_unknown (const struct utmp *data);
+static void endutent_unknown (void);
-/* We have three jump tables: unknown, db, or file. */
-static struct utfuncs unknown_functions =
+/* Initial Jump table. */
+const struct utfuncs __libc_utmp_unknown_functions =
{
- __setutent_unknown,
- __getutent_r_unknown,
- NULL,
- NULL,
- __pututline_unknown,
- __endutent_unknown,
+ setutent_unknown,
+ getutent_r_unknown,
+ getutid_r_unknown,
+ getutline_r_unknown,
+ pututline_unknown,
+ endutent_unknown,
NULL
};
/* Currently selected backend. */
-struct utfuncs *__libc_utmp_jump_table = &unknown_functions;
-
-/* The tables from the services. */
-extern struct utfuncs __libc_utmp_db_functions;
-extern struct utfuncs __libc_utmp_file_functions;
-
+const struct utfuncs *__libc_utmp_jump_table = &__libc_utmp_unknown_functions;
/* We need to protect the opening of the file. */
-__libc_lock_define_initialized (, __libc_utmp_lock)
+__libc_lock_define_initialized (, __libc_utmp_lock attribute_hidden)
-void
-__setutent (void)
+
+static int
+setutent_unknown (void)
{
- __libc_lock_lock (__libc_utmp_lock);
+ int result;
- (void) (*__libc_utmp_jump_table->setutent) (1);
+ result = (*__libc_utmp_file_functions.setutent) ();
+ if (result)
+ __libc_utmp_jump_table = &__libc_utmp_file_functions;
- __libc_lock_unlock (__libc_utmp_lock);
+ return result;
}
-weak_alias (__setutent, setutent)
static int
-__setutent_unknown (int reset)
+getutent_r_unknown (struct utmp *buffer, struct utmp **result)
{
- /* We have to test whether it is still not decided which backend to use. */
- assert (__libc_utmp_jump_table == &unknown_functions);
-
- /* See whether utmp db file exists. */
- if ((*__libc_utmp_db_functions.setutent) (reset))
- __libc_utmp_jump_table = &__libc_utmp_db_functions;
- else
- {
- /* Either the db file does not exist or we have other
- problems. So use the normal file. */
- (*__libc_utmp_file_functions.setutent) (reset);
- __libc_utmp_jump_table = &__libc_utmp_file_functions;
- }
-
- return 0;
+ /* The backend was not yet initialized. */
+ if (setutent_unknown ())
+ return (*__libc_utmp_jump_table->getutent_r) (buffer, result);
+
+ /* Not available. */
+ *result = NULL;
+ return -1;
}
-void
-__endutent (void)
+static int
+getutid_r_unknown (const struct utmp *id, struct utmp *buffer,
+ struct utmp **result)
{
- __libc_lock_lock (__libc_utmp_lock);
+ /* The backend was not yet initialized. */
+ if (setutent_unknown ())
+ return (*__libc_utmp_jump_table->getutid_r) (id, buffer, result);
- (*__libc_utmp_jump_table->endutent) ();
+ /* Not available. */
+ *result = NULL;
+ return -1;
+}
- __libc_lock_unlock (__libc_utmp_lock);
+
+static int
+getutline_r_unknown (const struct utmp *line, struct utmp *buffer,
+ struct utmp **result)
+{
+ /* The backend was not yet initialized. */
+ if (setutent_unknown ())
+ return (*__libc_utmp_jump_table->getutline_r) (line, buffer, result);
+
+ /* Not available. */
+ *result = NULL;
+ return -1;
+}
+
+
+static struct utmp *
+pututline_unknown (const struct utmp *data)
+{
+ /* The backend was not yet initialized. */
+ if (setutent_unknown ())
+ return (*__libc_utmp_jump_table->pututline) (data);
+
+ /* Not available. */
+ return NULL;
}
-weak_alias (__endutent, endutent)
static void
-__endutent_unknown (void)
+endutent_unknown (void)
{
- /* Huh, how do we came here? Nothing to do. */
+ /* Nothing to do. */
}
+void
+__setutent (void)
+{
+ __libc_lock_lock (__libc_utmp_lock);
+
+ (*__libc_utmp_jump_table->setutent) ();
+
+ __libc_lock_unlock (__libc_utmp_lock);
+}
+weak_alias (__setutent, setutent)
+
+
int
__getutent_r (struct utmp *buffer, struct utmp **result)
{
weak_alias (__getutent_r, getutent_r)
-static int
-__getutent_r_unknown (struct utmp *buffer, struct utmp **result)
-{
- /* It is not yet initialized. */
- __setutent_unknown (0);
-
- return (*__libc_utmp_jump_table->getutent_r) (buffer, result);
-}
-
-
-void
+struct utmp *
__pututline (const struct utmp *data)
{
+ struct utmp *buffer;
+
__libc_lock_lock (__libc_utmp_lock);
- (*__libc_utmp_jump_table->pututline) (data);
+ buffer = (*__libc_utmp_jump_table->pututline) (data);
__libc_lock_unlock (__libc_utmp_lock);
-}
-
-
-static void
-__pututline_unknown (const struct utmp *data)
-{
- /* It is not yet initialized. */
- __setutent_unknown (0);
- (*__libc_utmp_jump_table->pututline) (data);
+ return buffer;
}
+weak_alias (__pututline, pututline)
-int
-__utmpname (const char *file)
+void
+__endutent (void)
{
- int result = -1;
-
__libc_lock_lock (__libc_utmp_lock);
- /* Close the old file. */
(*__libc_utmp_jump_table->endutent) ();
-
- /* Store new names. */
- if ((*__libc_utmp_file_functions.utmpname) (file) == 0
- && !(*__libc_utmp_db_functions.utmpname) (file) == 0)
- {
- /* Try to find out whether we are supposed to work with a db
- file or not. Do this by looking for the extension ".db". */
- const char *ext = strrchr (file, '.');
-
- if (ext != NULL && strcmp (ext, ".db") == 0)
- __libc_utmp_jump_table = &__libc_utmp_db_functions;
- else
- __libc_utmp_jump_table = &unknown_functions;
-
- result = 0;
- }
+ __libc_utmp_jump_table = &__libc_utmp_unknown_functions;
__libc_lock_unlock (__libc_utmp_lock);
-
- return result;
}
-weak_alias (__utmpname, utmpname)
+weak_alias (__endutent, endutent)
projects / platform / upstream / glibc.git / blobdiff