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authorUlrich Drepper <drepper@redhat.com>2004-08-14 04:21:09 +0000
committerUlrich Drepper <drepper@redhat.com>2004-08-14 04:21:09 +0000
commit8500b0cabadf7500bdccdf6b94ad3f36bf7a96c9 (patch)
tree5c5eb63f6fa5ee9448988b2a231a8cf8d0608184 /nis
parenta57532064137c37543e7e8861a8931444a21157c (diff)
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Update.
* nis/nss_nis/nis-netgrp.c: Remove locking by using data in struct __netgrent object passed in instead of global variables. Optimize. * nis/nss_nisplus/nisplus-netgrp.c: Remove locking by using data in struct __netgrent object passed in instead of global variables. * inet/netgroup.h (struct __netgrent): Add service_user field. Move cursor in anonymous union, add new field location to that union. * inet/getnetgrent_r.c: Extensive rewrite to really enable concurrent uset of set/get/endnetgrent and innetgr.
Diffstat (limited to 'nis')
-rw-r--r--nis/nss_nis/nis-netgrp.c86
-rw-r--r--nis/nss_nisplus/nisplus-netgrp.c140
2 files changed, 95 insertions, 131 deletions
diff --git a/nis/nss_nis/nis-netgrp.c b/nis/nss_nis/nis-netgrp.c
index e9318d6..d339dd5 100644
--- a/nis/nss_nis/nis-netgrp.c
+++ b/nis/nss_nis/nis-netgrp.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1996,1997,1999,2000,2002,2003 Free Software Foundation, Inc.
+/* Copyright (C) 1996,1997,1999,2000,2002,2003,2004
+ Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@suse.de>, 1996.
@@ -17,11 +18,12 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
-#include <nss.h>
+#include <assert.h>
#include <ctype.h>
#include <errno.h>
-#include <bits/libc-lock.h>
+#include <malloc.h>
#include <netdb.h>
+#include <nss.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@@ -31,36 +33,28 @@
#include "nss-nis.h"
-/* Locks the static variables in this file. */
-__libc_lock_define_initialized (static, lock)
-
-static char *data;
-static size_t data_size;
-static char *cursor;
-
extern enum nss_status
-_nss_netgroup_parseline (char **cursor, struct __netgrent *result,
+_nss_netgroup_parseline (char **cursor, struct __netgrent *netgrp,
char *buffer, size_t buflen, int *errnop);
static void
-internal_nis_endnetgrent (void)
+internal_nis_endnetgrent (struct __netgrent *netgrp)
{
- if (data != NULL)
+ if (netgrp->data != NULL)
{
- free (data);
- data = NULL;
- data_size = 0;
- cursor = NULL;
+ free (netgrp->data);
+ netgrp->data = NULL;
+ netgrp->data_size = 0;
+ netgrp->cursor = NULL;
}
}
enum nss_status
-_nss_nis_setnetgrent (const char *group, struct __netgrent *dummy)
+_nss_nis_setnetgrent (const char *group, struct __netgrent *netgrp)
{
char *domain;
- char *result;
- int len, group_len;
+ int len;
enum nss_status status;
status = NSS_STATUS_SUCCESS;
@@ -71,41 +65,32 @@ _nss_nis_setnetgrent (const char *group, struct __netgrent *dummy)
if (yp_get_default_domain (&domain))
return NSS_STATUS_UNAVAIL;
- __libc_lock_lock (lock);
+ internal_nis_endnetgrent (netgrp);
- internal_nis_endnetgrent ();
-
- group_len = strlen (group);
-
- status = yperr2nss (yp_match (domain, "netgroup", group, group_len,
- &result, &len));
+ status = yperr2nss (yp_match (domain, "netgroup", group, strlen (group),
+ &netgrp->data, &len));
if (status == NSS_STATUS_SUCCESS)
{
- if (len > 0 && (data = malloc (len + 1)) != NULL)
- {
- data_size = len;
- cursor = strncpy (data, result, len + 1);
- data[len] = '\0';
- free (result);
- }
- else
- status = NSS_STATUS_NOTFOUND;
+ /* Our implementation of yp_match already allocates a buffer
+ which is one byte larger than the value in LEN specifies
+ and the last byte is filled with NUL. So we can simply
+ use that buffer. */
+ assert (len > 0);
+ assert (malloc_usable_size (netgrp->data) >= len + 1);
+ assert (netgrp->data[len] == '\0');
+
+ netgrp->data_size = len;
+ netgrp->cursor = netgrp->data;
}
- __libc_lock_unlock (lock);
-
return status;
}
enum nss_status
-_nss_nis_endnetgrent (struct __netgrent *dummy)
+_nss_nis_endnetgrent (struct __netgrent *netgrp)
{
- __libc_lock_lock (lock);
-
- internal_nis_endnetgrent ();
-
- __libc_lock_unlock (lock);
+ internal_nis_endnetgrent (netgrp);
return NSS_STATUS_SUCCESS;
}
@@ -114,16 +99,9 @@ enum nss_status
_nss_nis_getnetgrent_r (struct __netgrent *result, char *buffer, size_t buflen,
int *errnop)
{
- enum nss_status status;
-
- if (cursor == NULL)
+ if (result->cursor == NULL)
return NSS_STATUS_NOTFOUND;
- __libc_lock_lock (lock);
-
- status = _nss_netgroup_parseline (&cursor, result, buffer, buflen, errnop);
-
- __libc_lock_unlock (lock);
-
- return status;
+ return _nss_netgroup_parseline (&result->cursor, result, buffer, buflen,
+ errnop);
}
diff --git a/nis/nss_nisplus/nisplus-netgrp.c b/nis/nss_nisplus/nisplus-netgrp.c
index 2d5ddf0..c56a685 100644
--- a/nis/nss_nisplus/nisplus-netgrp.c
+++ b/nis/nss_nisplus/nisplus-netgrp.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
@@ -23,51 +23,47 @@
#include <netdb.h>
#include <string.h>
#include <netgroup.h>
-#include <bits/libc-lock.h>
#include <rpcsvc/nis.h>
#include "nss-nisplus.h"
-__libc_lock_define_initialized (static, lock)
-
-static nis_result *data = NULL;
-static unsigned long data_size = 0;
-static unsigned long position = 0;
-
#define NISENTRYVAL(idx,col,res) \
((res)->objects.objects_val[(idx)].EN_data.en_cols.en_cols_val[(col)].ec_value.ec_value_val)
#define NISENTRYLEN(idx,col,res) \
((res)->objects.objects_val[(idx)].EN_data.en_cols.en_cols_val[(col)].ec_value.ec_value_len)
-static enum nss_status
-_nss_nisplus_parse_netgroup (struct __netgrent *result, char *buffer,
- size_t buflen, int *errnop)
+enum nss_status
+_nss_nisplus_getnetgrent_r (struct __netgrent *result, char *buffer,
+ size_t buflen, int *errnop)
{
enum nss_status status;
/* Some sanity checks. */
- if (data == NULL || data_size == 0)
+ if (result->data == NULL || result->data_size == 0)
return NSS_STATUS_NOTFOUND;
- if (position == data_size)
+ if (result->position == result->data_size)
return result->first ? NSS_STATUS_NOTFOUND : NSS_STATUS_RETURN;
- if (NISENTRYLEN (position, 1, data) > 0)
+ unsigned int entrylen
+ = NISENTRYLEN (result->position, 1, (nis_result *) result->data);
+ if (entrylen > 0)
{
/* We have a list of other netgroups. */
result->type = group_val;
- if (NISENTRYLEN (position, 1, data) >= buflen)
+ if (entrylen >= buflen)
{
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
- strncpy (buffer, NISENTRYVAL (position, 1, data),
- NISENTRYLEN (position, 1, data));
- buffer[NISENTRYLEN (position, 1, data)] = '\0';
+ strncpy (buffer, NISENTRYVAL (result->position, 1,
+ (nis_result *) result->data),
+ entrylen);
+ buffer[entrylen] = '\0';
result->val.group = buffer;
- ++position;
+ ++result->position;
result->first = 0;
return NSS_STATUS_SUCCESS;
@@ -75,8 +71,13 @@ _nss_nisplus_parse_netgroup (struct __netgrent *result, char *buffer,
/* Before we can copy the entry to the private buffer we have to make
sure it is big enough. */
- if (NISENTRYLEN (position, 2, data) + NISENTRYLEN (position, 3, data) +
- NISENTRYLEN (position, 4, data) + 6 > buflen)
+ unsigned int hostlen
+ = NISENTRYLEN (result->position, 2, (nis_result *) result->data);
+ unsigned int userlen
+ = NISENTRYLEN (result->position, 3, (nis_result *) result->data);
+ unsigned int domainlen
+ = NISENTRYLEN (result->position, 4, (nis_result *) result->data);
+ if (hostlen + userlen + domainlen + 6 > buflen)
{
*errnop = ERANGE;
status = NSS_STATUS_TRYAGAIN;
@@ -87,40 +88,43 @@ _nss_nisplus_parse_netgroup (struct __netgrent *result, char *buffer,
result->type = triple_val;
- if (NISENTRYLEN (position, 2, data) == 0)
+ if (hostlen == 0)
result->val.triple.host = NULL;
else
{
result->val.triple.host = cp;
- cp = __stpncpy (cp, NISENTRYVAL (position, 2, data),
- NISENTRYLEN (position, 2, data));
+ cp = __stpncpy (cp, NISENTRYVAL (result->position, 2,
+ (nis_result *) result->data),
+ hostlen);
*cp++ = '\0';
}
- if (NISENTRYLEN (position, 3, data) == 0)
+ if (userlen == 0)
result->val.triple.user = NULL;
else
{
result->val.triple.user = cp;
- cp = __stpncpy (cp, NISENTRYVAL (position, 3, data),
- NISENTRYLEN (position, 3, data));
+ cp = __stpncpy (cp, NISENTRYVAL (result->position, 3,
+ (nis_result *) result->data),
+ userlen);
*cp++ = '\0';
}
- if (NISENTRYLEN (position, 4, data) == 0)
+ if (domainlen == 0)
result->val.triple.domain = NULL;
else
{
result->val.triple.domain = cp;
- cp = __stpncpy (cp, NISENTRYVAL (position, 4, data),
- NISENTRYLEN (position, 4, data));
+ cp = __stpncpy (cp, NISENTRYVAL (result->position, 4,
+ (nis_result *) result->data),
+ domainlen);
*cp = '\0';
}
status = NSS_STATUS_SUCCESS;
/* Remember where we stopped reading. */
- ++position;
+ ++result->position;
result->first = 0;
}
@@ -128,8 +132,20 @@ _nss_nisplus_parse_netgroup (struct __netgrent *result, char *buffer,
return status;
}
+static void
+internal_endnetgrent (struct __netgrent *netgrp)
+{
+ if (netgrp->data != NULL)
+ {
+ nis_freeresult ((nis_result *) netgrp->data);
+ netgrp->data = NULL;
+ netgrp->data_size = 0;
+ netgrp->position = 0;
+ }
+}
+
enum nss_status
-_nss_nisplus_setnetgrent (const char *group, struct __netgrent *dummy)
+_nss_nisplus_setnetgrent (const char *group, struct __netgrent *netgrp)
{
enum nss_status status;
char buf[strlen (group) + 30];
@@ -139,68 +155,38 @@ _nss_nisplus_setnetgrent (const char *group, struct __netgrent *dummy)
status = NSS_STATUS_SUCCESS;
- __libc_lock_lock (lock);
-
- if (data != NULL)
- {
- nis_freeresult (data);
- data = NULL;
- data_size = 0;
- position = 0;
- }
+ internal_endnetgrent (netgrp);
sprintf (buf, "[name=%s],netgroup.org_dir", group);
- data = nis_list (buf, EXPAND_NAME, NULL, NULL);
+ netgrp->data = (char *) nis_list (buf, EXPAND_NAME, NULL, NULL);
- if (data == NULL)
+ if (netgrp->data == NULL)
{
__set_errno (ENOMEM);
status = NSS_STATUS_TRYAGAIN;
}
- else if (niserr2nss (data->status) != NSS_STATUS_SUCCESS)
+ else if (niserr2nss (((nis_result *) netgrp->data)->status)
+ != NSS_STATUS_SUCCESS)
{
- status = niserr2nss (data->status);
- nis_freeresult (data);
- data = NULL;
+ status = niserr2nss (((nis_result *) netgrp->data)->status);
+
+ internal_endnetgrent (netgrp);
}
else
- data_size = data->objects.objects_len;
-
- __libc_lock_unlock (lock);
-
- return status;
-}
-
-enum nss_status
-_nss_nisplus_endnetgrent (struct __netgrent *dummy)
-{
- __libc_lock_lock (lock);
-
- if (data != NULL)
{
- nis_freeresult (data);
- data = NULL;
- data_size = 0;
- position = 0;
+ netgrp->data_size = ((nis_result *) netgrp->data)->objects.objects_len;
+ netgrp->position = 0;
+ netgrp->first = 1;
}
- __libc_lock_unlock (lock);
-
- return NSS_STATUS_SUCCESS;
+ return status;
}
enum nss_status
-_nss_nisplus_getnetgrent_r (struct __netgrent *result,
- char *buffer, size_t buflen, int *errnop)
+_nss_nisplus_endnetgrent (struct __netgrent *netgrp)
{
- enum nss_status status;
-
- __libc_lock_lock (lock);
-
- status = _nss_nisplus_parse_netgroup (result, buffer, buflen, errnop);
+ internal_endnetgrent (netgrp);
- __libc_lock_unlock (lock);
-
- return status;
+ return NSS_STATUS_SUCCESS;
}