@item EBADF
The @var{dirstream} argument is not valid.
@end table
+
+@code{readdir} is not thread safe. Multiple threads using
+@code{readdir} on the same @var{dirstream} may overwrite the return
+value. Use @code{readdir_r} when this is critical.
+@end deftypefun
+
+@comment dirent.h
+@comment GNU
+@deftypefun int readdir_r (DIR *@var{dirstream}, struct *@var{entry}, struct **@var{result})
+This function is the reentrant version of @code{reentrant}. Like
+@code{readdir} it returns the next entry from the directory. But to
+prevent conflicts for simultanously running threads the result is not
+stored in some internal memory. Instead the argument @var{entry} has to
+point to a place where the result is stored.
+
+The return value is @code{0} in case the next entry was read
+successfully. In this case a pointer to the result is returned in
+*@var{result}. It is not required that *@var{result} is the same as
+@var{entry}. If somethings goes wrong while exeucting @code{readdir_r}
+the function return @code{-1}. The @code{errno} variable is set like
+described for @code{readdir}.
+
+@strong{Portability Note:} On some systems, @code{readdir_r} may not
+return a terminated string as the file name even if no @code{d_reclen}
+element is available in @code{struct dirent} and the file name as the
+maximal allowed size. Modern systems all have the @code{d_reclen} field
+and on old systems multi threading is not critical. In any case, there
+is no such problem with the @code{readdir} function so that even on
+systems without @code{d_reclen} field one could use multiple threads by
+using external locking.
@end deftypefun
@comment dirent.h
hsearch hsearch_r tsearch lsearch \
err error ustat \
getsysstats
-
-ifneq (,$(filter %REENTRANT, $(defines)))
-routines += force-wrapper
-endif
-
aux := init-misc
distribute := bsd-compat.c
extra-objs := bsd-compat.o
# Caution: if you add a database here, you must add its real name
# in databases.def, too.
databases = proto service hosts network grp pwd rpc ethers \
- spwd
+ spwd netgrp
# Specify rules for the nss_* modules. We have some services.
services := files dns db
DEFINE_DATABASE (ethers)
DEFINE_DATABASE (group)
DEFINE_DATABASE (hosts)
+DEFINE_DATABASE (netgroup)
DEFINE_DATABASE (networks)
DEFINE_DATABASE (passwd)
DEFINE_DATABASE (protocols)
DATABASES = $(wildcard /etc/passwd /etc/group /etc/ethers /etc/protocols \
- /etc/rpc /etc/services /etc/shadow)
+ /etc/rpc /etc/services /etc/shadow /etc/netgroup)
VAR_DB = /var/db
/^[^#]/ { printf ".%s ", $$1; print }' $^ | \
$(MAKEDB) -o $@ -
@echo "done."
+
+$(VAR_DB)/netgroup.db: /etc/netgroup
+ @echo -n "$(patsubst %.db,%,$(@F))... "
+ @$(AWK) '/^[^#]/ { end=sub(/\\/, " "); \
+ gsub(/[ \t]+/, " "); \
+ if(end == 1) printf "%s", $$0; else print }' $^ | \
+ $(MAKEDB) -o $@ -
+ @echo "done."
#ifdef NEED__RES
if ((_res.options & RES_INIT) == 0 && res_init () == -1)
{
- h_errno = NETDB_INTERNAL;
+ __set_h_errno (NETDB_INTERNAL);
return NULL;
}
#endif /* need _res */
#ifdef NEED__RES
if ((_res.options & RES_INIT) == 0 && res_init () == -1)
{
- h_errno = NETDB_INTERNAL;
+ __set_h_errno (NETDB_INTERNAL);
return NULL;
}
#endif /* need _res */
#ifdef NEED__RES
if ((_res.options & RES_INIT) == 0 && res_init () == -1)
{
- h_errno = NETDB_INTERNAL;
+ __set_h_errno (NETDB_INTERNAL);
return NULL;
}
#endif /* need _res */
--- /dev/null
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ulrich Drepper <drepper@cygnus.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.
+
+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. */
+
+#define DATABASE_NAME netgroup
+
+#include "XXX-lookup.c"
NSS_STATUS_UNAVAIL,
NSS_STATUS_NOTFOUND,
NSS_STATUS_SUCCESS,
+ NSS_STATUS_RETURN
};
static unsigned int entidx; /* Index for `getENTNAME'. */
/* Open database file if not already opened. */
-static int
+static enum nss_status
internal_setent (int stayopen)
{
- int status = NSS_STATUS_SUCCESS;
+ enum nss_status status = NSS_STATUS_SUCCESS;
if (db == NULL)
{
/* Thread-safe, exported version of that. */
-int
+enum nss_status
CONCAT(_nss_db_set,ENTNAME) (int stayopen)
{
- int status;
+ enum nss_status status;
__libc_lock_lock (lock);
/* Thread-safe, exported version of that. */
-int
+enum nss_status
CONCAT(_nss_db_end,ENTNAME) (void)
{
__libc_lock_lock (lock);
--- /dev/null
+/* Netgroup file parser in nss_db modules.
+Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ulrich Drepper <drepper@cygnus.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.
+
+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 <db.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <libc-lock.h>
+#include <paths.h>
+#include "nsswitch.h"
+#include "netgroup.h"
+
+
+#define DBFILE _PATH_VARDB "netgroup.db"
+
+
+/* Locks the static variables in this file. */
+__libc_lock_define_initialized (static, lock)
+\f
+/* Maintenance of the shared handle open on the database. */
+static DB *db;
+static char *entry;
+static char *cursor;
+
+enum nss_status
+_nss_db_setnetgrent (const char *group)
+{
+ enum nss_status status = NSS_STATUS_SUCCESS;
+
+ __libc_lock_lock (lock);
+
+ /* Make sure the data base file is open. */
+ if (db == NULL)
+ {
+ db = dbopen (DBFILE, O_RDONLY, 0, DB_BTREE, NULL);
+
+ if (db == NULL)
+ status = errno = EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
+ }
+
+ if (status == NSS_STATUS_SUCCESS)
+ {
+ DBT key = { data: (void *) group, size: strlen (group) };
+ DBT value;
+
+ if ((*db->get) (db, &key, &value, 0) != 0)
+ status = NSS_STATUS_NOTFOUND;
+ else
+ cursor = entry = value.data;
+ }
+
+ __libc_lock_unlock (lock);
+
+ return status;
+
+}
+
+
+enum nss_status
+_nss_db_endnetgrent (void)
+{
+ __libc_lock_lock (lock);
+
+ if (db != NULL)
+ {
+ (*db->close) (db);
+ db = NULL;
+ }
+
+ __libc_lock_unlock (lock);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+
+extern enum nss_status _nss_netgroup_parseline (char **cursor,
+ struct __netgrent *result,
+ char *buffer, int buflen);
+
+enum nss_status
+_nss_db_getnetgrent_r (struct __netgrent *result, char *buffer, int buflen)
+{
+ int status;
+
+ __libc_lock_lock (lock);
+
+ status = _nss_netgroup_parseline (&cursor, result, buffer, buflen);
+
+ __libc_lock_unlock (lock);
+
+ return status;
+}
OSF/1 has a per-thread h_errno variable. */
if (header_pointer->aa != 0)
{
- h_errno = HOST_NOT_FOUND;
+ __set_h_errno (HOST_NOT_FOUND);
return NSS_STATUS_NOTFOUND;
}
else
{
- h_errno = TRY_AGAIN;
+ __set_h_errno (TRY_AGAIN);
return NSS_STATUS_TRYAGAIN;
}
return NSS_STATUS_SUCCESS;
}
- /* XXX Really use global variable??? */
- h_errno = TRY_AGAIN;
+ __set_h_errno (TRY_AGAIN);
return NSS_STATUS_TRYAGAIN;
}
--- /dev/null
+/* Netgroup file parser in nss_files modules.
+Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ulrich Drepper <drepper@cygnus.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.
+
+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 <ctype.h>
+#include <errno.h>
+#include <libc-lock.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "nsswitch.h"
+#include "netgroup.h"
+
+#define DATAFILE "/etc/netgroup"
+
+
+/* Locks the static variables in this file. */
+__libc_lock_define_initialized (static, lock)
+\f
+/* We share a single place where we store the data for the current
+ netgroup. This buffer is allocated by `setnetgrent' and freed on
+ the next call of this function or when calling `endnetgrent'. */
+static char *data;
+static size_t data_size;
+static char *cursor;
+static int first;
+
+
+#define EXPAND(needed) \
+ do \
+ { \
+ size_t old_cursor = cursor - data; \
+ \
+ data_size += 512 > 2 * needed ? 512 : 2 * needed; \
+ data = realloc (data, data_size); \
+ \
+ if (data == NULL) \
+ { \
+ status = NSS_STATUS_UNAVAIL; \
+ goto the_end; \
+ } \
+ \
+ cursor = data + old_cursor; \
+ } \
+ while (0)
+
+
+enum nss_status
+_nss_files_setnetgrent (const char *group)
+{
+ FILE *fp;
+ enum nss_status status;
+
+ if (group[0] == '\0')
+ return NSS_STATUS_UNAVAIL;
+
+ __libc_lock_lock (lock);
+
+ /* Find the netgroups file and open it. */
+ fp = fopen (DATAFILE, "r");
+ if (fp == NULL)
+ status = errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
+ else
+ {
+ /* Read the file line by line and try to find the description
+ GROUP. We must take care for long lines. */
+ char *line = NULL;
+ size_t line_len = 0;
+ const ssize_t group_len = strlen (group);
+
+ status = NSS_STATUS_NOTFOUND;
+ cursor = data;
+
+ while (!feof (fp))
+ {
+ ssize_t curlen = getline (&line, &line_len, fp);
+ int found;
+
+ if (curlen < 0)
+ {
+ status = NSS_STATUS_NOTFOUND;
+ break;
+ }
+
+ found = (curlen > group_len && strncmp (line, group, group_len) == 0
+ && isspace (line[group_len]));
+
+ /* Read the whole line (including continuation) and store it
+ if FOUND in nonzero. Otherwise we don't need it. */
+ if (found)
+ {
+ /* Store the data from the first line. */
+ EXPAND (curlen - group_len);
+ memcpy (cursor, &line[group_len + 1], curlen - group_len);
+ cursor += (curlen - group_len) - 1;
+ }
+
+ while (line[curlen - 1] == '\n' && line[curlen - 2] == '\\')
+ {
+ /* Yes, we have a continuation line. */
+ if (found)
+ /* Remove these characters from the stored line. */
+ cursor -= 2;
+
+ /* Get netxt line. */
+ curlen = getline (&line, &line_len, fp);
+ if (curlen <= 0)
+ break;
+
+ if (found)
+ {
+ /* Make sure we have enough room. */
+ EXPAND (1 + curlen + 1);
+
+ /* Add separator in case next line starts immediately. */
+ *cursor++ = ' ';
+
+ /* Copy new line. */
+ memcpy (cursor, line, curlen + 1);
+ cursor += curlen;
+ }
+ }
+
+ if (found)
+ {
+ /* Now we have read the line. */
+ status = NSS_STATUS_SUCCESS;
+ cursor = data;
+ first = 1;
+ break;
+ }
+ }
+
+ the_end:
+ /* We don't need the file and the line buffer anymore. */
+ free (line);
+ fclose (fp);
+ }
+
+ __libc_lock_unlock (lock);
+
+ return status;
+}
+
+
+int
+_nss_files_endnetgrent (void)
+{
+ __libc_lock_lock (lock);
+
+ /* Free allocated memory for data if some is present. */
+ if (data != NULL)
+ {
+ free (data);
+ data = NULL;
+ data_size = 0;
+ cursor = NULL;
+ }
+
+ __libc_lock_unlock (lock);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+
+enum nss_status
+_nss_netgroup_parseline (char **cursor, struct __netgrent *result,
+ char *buffer, int buflen)
+{
+ enum nss_status status;
+ const char *host, *user, *domain;
+ char *cp = *cursor;
+
+ /* First skip leading spaces. */
+ while (isspace (*cp))
+ ++cp;
+
+ if (*cp != '(')
+ return first ? NSS_STATUS_NOTFOUND : NSS_STATUS_RETURN;
+
+ /* Match host name. */
+ host = ++cp;
+ while (*cp != ',')
+ if (*cp++ == '\0')
+ return first ? NSS_STATUS_NOTFOUND : NSS_STATUS_RETURN;
+
+ /* Match user name. */
+ user = ++cp;
+ while (*cp != ',')
+ if (*cp++ == '\0')
+ return first ? NSS_STATUS_NOTFOUND : NSS_STATUS_RETURN;
+
+ /* Match domain name. */
+ domain = ++cp;
+ while (*cp != ')')
+ if (*cp++ == '\0')
+ return first ? NSS_STATUS_NOTFOUND : NSS_STATUS_RETURN;
+ ++cp;
+
+
+ /* When we got here we have found an entry. Before we can copy it
+ to the private buffer we have to make sure it is big enough. */
+ if (cp - host > buflen)
+ {
+ __set_errno (ERANGE);
+ status = NSS_STATUS_UNAVAIL;
+ }
+ else
+ {
+ memcpy (buffer, host, cp - host);
+
+ buffer[(user - host) - 1] = '\0';
+ result->host = *host == ',' ? NULL : buffer;
+
+ buffer[(domain - host) - 1] = '\0';
+ result->user = *user == ',' ? NULL : buffer + (user - host);
+
+ buffer[(cp - host) - 1] = '\0';
+ result->domain = *domain == ')' ? NULL : buffer + (domain - host);
+
+ status = NSS_STATUS_SUCCESS;
+
+ /* Rememember where we stopped reading. */
+ *cursor = cp;
+
+ first = 0;
+ }
+
+ return status;
+}
+
+
+enum nss_status
+_nss_files_getnetgrent_r (struct __netgrent *result, char *buffer, int buflen)
+{
+ enum nss_status status;
+
+ __libc_lock_lock (lock);
+
+ status = _nss_netgroup_parseline (&cursor, result, buffer, buflen);
+
+ __libc_lock_unlock (lock);
+
+ return status;
+}
else
{
/* This is really only for debugging. */
- if (NSS_STATUS_TRYAGAIN > status || status > NSS_STATUS_SUCCESS)
+ if (NSS_STATUS_TRYAGAIN > status || status > NSS_STATUS_RETURN)
__libc_fatal ("illegal status in " __FUNCTION__);
if (nss_next_action (*ni, status) == NSS_ACTION_RETURN)
new_service->actions[2 + NSS_STATUS_UNAVAIL] = NSS_ACTION_CONTINUE;
new_service->actions[2 + NSS_STATUS_NOTFOUND] = NSS_ACTION_CONTINUE;
new_service->actions[2 + NSS_STATUS_SUCCESS] = NSS_ACTION_RETURN;
+ new_service->actions[2 + NSS_STATUS_RETURN] = NSS_ACTION_RETURN;
new_service->library = NULL;
new_service->known = NULL;
new_service->next = NULL;
services: db files
ethers: db files
rpc: db files
+
+netgroup: db files
/* Name of the service (`files', `dns', `nis', ...). */
const char *name;
/* Action according to result. */
- lookup_actions actions[4];
+ lookup_actions actions[5];
/* Link to the underlying library object. */
service_library *library;
/* Collection of known functions. */
#include <gnu/types.h>
#ifndef ssize_t
-#define ssize_t __ssize_t
+typedef __ssize_t ssize_t;
+#define ssize_t ssize_t
#endif
#define __need_size_t
projects / kopensolaris-gnu / glibc.git / commitdiff