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authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /nis/nss_nisplus/nisplus-grp.c
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
downloadglibc-a334319f6530564d22e775935d9c91663623a1b4.tar.gz
(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'nis/nss_nisplus/nisplus-grp.c')
-rw-r--r--nis/nss_nisplus/nisplus-grp.c380
1 files changed, 131 insertions, 249 deletions
diff --git a/nis/nss_nisplus/nisplus-grp.c b/nis/nss_nisplus/nisplus-grp.c
index 7cc762fea9..daca94fc87 100644
--- a/nis/nss_nisplus/nisplus-grp.c
+++ b/nis/nss_nisplus/nisplus-grp.c
@@ -1,5 +1,4 @@
-/* Copyright (C) 1997, 2001, 2002, 2003, 2005, 2006
- Free Software Foundation, Inc.
+/* Copyright (C) 1997, 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
@@ -18,7 +17,6 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
-#include <atomic.h>
#include <nss.h>
#include <grp.h>
#include <ctype.h>
@@ -29,110 +27,68 @@
#include "nss-nisplus.h"
#include "nisplus-parser.h"
-#include <libnsl.h>
-#include <nis_intern.h>
-#include <nis_xdr.h>
-
__libc_lock_define_initialized (static, lock);
-/* Connection information. */
-static ib_request *ibreq;
-static directory_obj *dir;
-static dir_binding bptr;
-static char *tablepath;
-static char *tableptr;
-/* Cursor. */
-static netobj cursor;
-
+static nis_result *result;
+static unsigned long next_entry;
+static nis_name tablename_val;
+static u_long tablename_len;
-nis_name grp_tablename_val attribute_hidden;
-size_t grp_tablename_len attribute_hidden;
-
-enum nss_status
-_nss_grp_create_tablename (int *errnop)
+static enum nss_status
+_nss_create_tablename (int *errnop)
{
- if (grp_tablename_val == NULL)
+ if (tablename_val == NULL)
{
- const char *local_dir = nis_local_directory ();
- size_t local_dir_len = strlen (local_dir);
- static const char prefix[] = "group.org_dir.";
+ char buf [40 + strlen (nis_local_directory ())];
+ char *p;
- char *p = malloc (sizeof (prefix) + local_dir_len);
- if (p == NULL)
+ p = __stpcpy (buf, "group.org_dir.");
+ p = __stpcpy (p, nis_local_directory ());
+ tablename_val = __strdup (buf);
+ if (tablename_val == NULL)
{
*errnop = errno;
return NSS_STATUS_TRYAGAIN;
}
-
- memcpy (__stpcpy (p, prefix), local_dir, local_dir_len + 1);
-
- grp_tablename_len = sizeof (prefix) - 1 + local_dir_len;
-
- atomic_write_barrier ();
-
- if (atomic_compare_and_exchange_bool_acq (&grp_tablename_val, p, NULL))
- {
- /* Another thread already installed the value. */
- free (p);
- grp_tablename_len = strlen (grp_tablename_val);
- }
+ tablename_len = strlen (tablename_val);
}
-
return NSS_STATUS_SUCCESS;
}
-
-static void
-internal_endgrent (void)
-{
- __nisbind_destroy (&bptr);
- memset (&bptr, '\0', sizeof (bptr));
-
- nis_free_directory (dir);
- dir = NULL;
-
- nis_free_request (ibreq);
- ibreq = NULL;
-
- xdr_free ((xdrproc_t) xdr_netobj, (char *) &cursor);
- memset (&cursor, '\0', sizeof (cursor));
-
- free (tablepath);
- tableptr = tablepath = NULL;
-}
-
-
static enum nss_status
-internal_setgrent (int *errnop)
+internal_setgrent (void)
{
- enum nss_status status = NSS_STATUS_SUCCESS;
+ enum nss_status status;
+ int err;
- if (grp_tablename_val == NULL)
- status = _nss_grp_create_tablename (errnop);
+ if (result)
+ nis_freeresult (result);
+ result = NULL;
+ next_entry = 0;
- if (status == NSS_STATUS_SUCCESS)
- {
- ibreq = __create_ib_request (grp_tablename_val, 0);
- if (ibreq == NULL)
- {
- *errnop = errno;
- return NSS_STATUS_TRYAGAIN;
- }
+ if (tablename_val == NULL)
+ if (_nss_create_tablename (&err) != NSS_STATUS_SUCCESS)
+ return NSS_STATUS_UNAVAIL;
- nis_error retcode = __prepare_niscall (grp_tablename_val, &dir, &bptr, 0);
- if (retcode != NIS_SUCCESS)
+ result = nis_list (tablename_val, FOLLOW_LINKS | FOLLOW_PATH, NULL, NULL);
+ if (result == NULL)
+ {
+ status = NSS_STATUS_TRYAGAIN;
+ __set_errno (ENOMEM);
+ }
+ else
+ {
+ status = niserr2nss (result->status);
+ if (status != NSS_STATUS_SUCCESS)
{
- nis_free_request (ibreq);
- ibreq = NULL;
- status = niserr2nss (retcode);
+ nis_freeresult (result);
+ result = NULL;
}
}
-
return status;
}
-
enum nss_status
_nss_nisplus_setgrent (int stayopen)
{
@@ -140,133 +96,58 @@ _nss_nisplus_setgrent (int stayopen)
__libc_lock_lock (lock);
- internal_endgrent ();
-
- // XXX We need to be able to set errno. Pass in new parameter.
- int err;
- status = internal_setgrent (&err);
+ status = internal_setgrent ();
__libc_lock_unlock (lock);
return status;
}
-
enum nss_status
_nss_nisplus_endgrent (void)
{
__libc_lock_lock (lock);
- internal_endgrent ();
+ if (result)
+ nis_freeresult (result);
+ result = NULL;
__libc_lock_unlock (lock);
return NSS_STATUS_SUCCESS;
}
-
static enum nss_status
internal_nisplus_getgrent_r (struct group *gr, char *buffer, size_t buflen,
int *errnop)
{
- int parse_res = -1;
- enum nss_status retval = NSS_STATUS_SUCCESS;
+ int parse_res;
- /* Get the next entry until we found a correct one. */
- do
+ if (result == NULL)
{
- nis_error status;
- nis_result result;
- memset (&result, '\0', sizeof (result));
+ enum nss_status status;
- if (cursor.n_bytes == NULL)
- {
- if (ibreq == NULL)
- {
- retval = internal_setgrent (errnop);
- if (retval != NSS_STATUS_SUCCESS)
- return retval;
- }
-
- status = __do_niscall3 (&bptr, NIS_IBFIRST,
- (xdrproc_t) _xdr_ib_request,
- (caddr_t) ibreq,
- (xdrproc_t) _xdr_nis_result,
- (caddr_t) &result,
- 0, NULL);
- }
- else
- {
- ibreq->ibr_cookie.n_bytes = cursor.n_bytes;
- ibreq->ibr_cookie.n_len = cursor.n_len;
-
- status = __do_niscall3 (&bptr, NIS_IBNEXT,
- (xdrproc_t) _xdr_ib_request,
- (caddr_t) ibreq,
- (xdrproc_t) _xdr_nis_result,
- (caddr_t) &result,
- 0, NULL);
-
- ibreq->ibr_cookie.n_bytes = NULL;
- ibreq->ibr_cookie.n_len = 0;
- }
-
- if (status != NIS_SUCCESS)
- return niserr2nss (status);
+ status = internal_setgrent ();
+ if (result == NULL || status != NSS_STATUS_SUCCESS)
+ return status;
+ }
- if (NIS_RES_STATUS (&result) == NIS_NOTFOUND)
- {
- /* No more entries on this server. This means we have to go
- to the next server on the path. */
- status = __follow_path (&tablepath, &tableptr, ibreq, &bptr);
- if (status != NIS_SUCCESS)
- return niserr2nss (status);
-
- directory_obj *newdir = NULL;
- dir_binding newbptr;
- status = __prepare_niscall (ibreq->ibr_name, &newdir, &newbptr, 0);
- if (status != NIS_SUCCESS)
- return niserr2nss (status);
-
- nis_free_directory (dir);
- dir = newdir;
- __nisbind_destroy (&bptr);
- bptr = newbptr;
-
- xdr_free ((xdrproc_t) xdr_netobj, (char *) &result.cookie);
- result.cookie.n_bytes = NULL;
- result.cookie.n_len = 0;
- parse_res = 0;
- goto next;
- }
- else if (NIS_RES_STATUS (&result) != NIS_SUCCESS)
- return niserr2nss (NIS_RES_STATUS (&result));
+ /* Get the next entry until we found a correct one. */
+ do
+ {
+ if (next_entry >= result->objects.objects_len)
+ return NSS_STATUS_NOTFOUND;
- parse_res = _nss_nisplus_parse_grent (&result, gr,
+ parse_res = _nss_nisplus_parse_grent (result, next_entry, gr,
buffer, buflen, errnop);
- if (__builtin_expect (parse_res == -1, 0))
- {
- *errnop = ERANGE;
- retval = NSS_STATUS_TRYAGAIN;
- goto freeres;
- }
+ if (parse_res == -1)
+ return NSS_STATUS_TRYAGAIN;
- next:
- /* Free the old cursor. */
- xdr_free ((xdrproc_t) xdr_netobj, (char *) &cursor);
- /* Remember the new one. */
- cursor.n_bytes = result.cookie.n_bytes;
- cursor.n_len = result.cookie.n_len;
- /* Free the result structure. NB: we do not remove the cookie. */
- result.cookie.n_bytes = NULL;
- result.cookie.n_len = 0;
- freeres:
- xdr_free ((xdrproc_t) _xdr_nis_result, (char *) &result);
- memset (&result, '\0', sizeof (result));
+ ++next_entry;
}
while (!parse_res);
- return retval;
+ return NSS_STATUS_SUCCESS;
}
enum nss_status
@@ -290,9 +171,9 @@ _nss_nisplus_getgrnam_r (const char *name, struct group *gr,
{
int parse_res;
- if (grp_tablename_val == NULL)
+ if (tablename_val == NULL)
{
- enum nss_status status = _nss_grp_create_tablename (errnop);
+ enum nss_status status = _nss_create_tablename (errnop);
if (status != NSS_STATUS_SUCCESS)
return status;
@@ -303,101 +184,102 @@ _nss_nisplus_getgrnam_r (const char *name, struct group *gr,
*errnop = EINVAL;
return NSS_STATUS_NOTFOUND;
}
-
- nis_result *result;
- char buf[strlen (name) + 9 + grp_tablename_len];
- int olderr = errno;
-
- snprintf (buf, sizeof (buf), "[name=%s],%s", name, grp_tablename_val);
-
- result = nis_list (buf, FOLLOW_LINKS | FOLLOW_PATH, NULL, NULL);
-
- if (result == NULL)
+ else
{
- *errnop = ENOMEM;
- return NSS_STATUS_TRYAGAIN;
- }
+ nis_result *result;
+ char buf[strlen (name) + 24 + tablename_len];
+ int olderr = errno;
- if (__builtin_expect (niserr2nss (result->status) != NSS_STATUS_SUCCESS, 0))
- {
- enum nss_status status = niserr2nss (result->status);
+ sprintf (buf, "[name=%s],%s", name, tablename_val);
- nis_freeresult (result);
- return status;
- }
+ result = nis_list (buf, FOLLOW_LINKS | FOLLOW_PATH, NULL, NULL);
- parse_res = _nss_nisplus_parse_grent (result, gr, buffer, buflen, errnop);
- nis_freeresult (result);
- if (__builtin_expect (parse_res < 1, 0))
- {
- if (parse_res == -1)
+ if (result == NULL)
{
- *errnop = ERANGE;
+ *errnop = ENOMEM;
return NSS_STATUS_TRYAGAIN;
}
- else
+ if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
{
- __set_errno (olderr);
- return NSS_STATUS_NOTFOUND;
+ enum nss_status status = niserr2nss (result->status);
+
+ nis_freeresult (result);
+ return status;
}
- }
- return NSS_STATUS_SUCCESS;
+ parse_res = _nss_nisplus_parse_grent (result, 0, gr, buffer, buflen,
+ errnop);
+ nis_freeresult (result);
+ if (parse_res < 1)
+ {
+ if (parse_res == -1)
+ {
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ else
+ {
+ __set_errno (olderr);
+ return NSS_STATUS_NOTFOUND;
+ }
+ }
+ return NSS_STATUS_SUCCESS;
+ }
}
enum nss_status
_nss_nisplus_getgrgid_r (const gid_t gid, struct group *gr,
char *buffer, size_t buflen, int *errnop)
{
- if (grp_tablename_val == NULL)
+ if (tablename_val == NULL)
{
- enum nss_status status = _nss_grp_create_tablename (errnop);
+ enum nss_status status = _nss_create_tablename (errnop);
if (status != NSS_STATUS_SUCCESS)
return status;
}
- int parse_res;
- nis_result *result;
- char buf[8 + 3 * sizeof (unsigned long int) + grp_tablename_len];
- int olderr = errno;
-
- snprintf (buf, sizeof (buf), "[gid=%lu],%s",
- (unsigned long int) gid, grp_tablename_val);
+ {
+ int parse_res;
+ nis_result *result;
+ char buf[36 + tablename_len];
+ int olderr = errno;
- result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
+ sprintf (buf, "[gid=%lu],%s", (unsigned long int) gid, tablename_val);
- if (result == NULL)
- {
- *errnop = ENOMEM;
- return NSS_STATUS_TRYAGAIN;
- }
+ result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
- if (__builtin_expect (niserr2nss (result->status) != NSS_STATUS_SUCCESS, 0))
- {
- enum nss_status status = niserr2nss (result->status);
+ if (result == NULL)
+ {
+ *errnop = ENOMEM;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
+ {
+ enum nss_status status = niserr2nss (result->status);
- __set_errno (olderr);
-
- nis_freeresult (result);
- return status;
- }
+ __set_errno (olderr);
- parse_res = _nss_nisplus_parse_grent (result, gr, buffer, buflen, errnop);
-
- nis_freeresult (result);
- if (__builtin_expect (parse_res < 1, 0))
- {
- __set_errno (olderr);
-
- if (parse_res == -1)
- {
- *errnop = ERANGE;
- return NSS_STATUS_TRYAGAIN;
- }
- else
- return NSS_STATUS_NOTFOUND;
- }
-
- return NSS_STATUS_SUCCESS;
+ nis_freeresult (result);
+ return status;
+ }
+
+ parse_res = _nss_nisplus_parse_grent (result, 0, gr, buffer, buflen,
+ errnop);
+
+ nis_freeresult (result);
+ if (parse_res < 1)
+ {
+ __set_errno (olderr);
+
+ if (parse_res == -1)
+ {
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ else
+ return NSS_STATUS_NOTFOUND;
+ }
+ return NSS_STATUS_SUCCESS;
+ }
}