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-rw-r--r--ChangeLog24
-rw-r--r--grp/Makefile4
-rw-r--r--grp/compat-initgroups.c98
-rw-r--r--grp/initgroups.c119
-rw-r--r--nscd/Makefile4
-rw-r--r--nscd/cache.c4
-rw-r--r--nscd/connections.c12
-rw-r--r--nscd/initgrcache.c391
-rw-r--r--nscd/nscd-client.h13
-rw-r--r--nscd/nscd_getai.c1
-rw-r--r--nscd/nscd_initgroups.c158
-rw-r--r--nscd/nscd_proto.h5
-rw-r--r--nscd/selinux.c3
-rw-r--r--sunrpc/clnt_udp.c1
-rw-r--r--sunrpc/get_myaddr.c4
-rw-r--r--sunrpc/pmap_clnt.c4
-rw-r--r--sunrpc/pmap_rmt.c1
17 files changed, 738 insertions, 108 deletions
diff --git a/ChangeLog b/ChangeLog
index 92715fd..f95cc74 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,29 @@
2004-09-29 Ulrich Drepper <drepper@redhat.com>
+ * grp/initgroups.c: Move compat_call implementation...
+ * grp/compat-initgroups.c: ...to here. New file.
+ * grp/Makefile (distribute): Add compat-initgroups.c.
+ (CFLAGS-initgroups.c): Add -DUSE_NSCD=1.
+ * mscd/initgrcache.c: New file.
+ * nscd/nscd_initgroups.c: New file.
+ * nscd/Makefile (routines): Add nscd_initgroups.
+ (nscd-modules): Add initgrcache.
+ * nscd/cache.c (prune_cache): Add support for INITGROUPS entries.
+ * nscd/connections.c: Handle INITGROUPS requests.
+ * nscd/nscd-client.h: Define INITGROUPS, initgr_response_header.
+ Add initgrdata element to struct datahead. Fix typo in comment.
+ * nscd/nscd_proto.h: Declare __nscd_getgrouplist. Fix parameter
+ type in __nscd_getgrgrid_r.
+ * nscd/selinux.c (perms): Add INITGROUPS entry.
+
+ * nscd/nscd_getai.c: No need to include <sys/mman.h>.
+
+ * sunrpc/get_myaddr.c (get_myaddress): Account for interfaces without
+ assigned addresses.
+ * sunrpc/pmap_clnt.c (__get_myaddress): Likewise.
+ * sunrpc/pmap_rmt.c (getbroadcastnets): Likewise.
+ * sunrpc/clnt_udp.c (is_network_up): Likewise.
+
* nscd/nscd.c: Define getaddrinfo hidden so that it is never found
outside.
diff --git a/grp/Makefile b/grp/Makefile
index 54e8639..e6ca864 100644
--- a/grp/Makefile
+++ b/grp/Makefile
@@ -22,7 +22,7 @@
subdir := grp
headers := grp.h
-distribute := tst_fgetgrent.c tst_fgetgrent.sh
+distribute := tst_fgetgrent.c tst_fgetgrent.sh compat-initgroups.c
routines := fgetgrent initgroups setgroups \
getgrent getgrgid getgrnam putgrent \
@@ -54,7 +54,7 @@ CFLAGS-getgrent.c = -fexceptions
CFLAGS-fgetgrent.c = -fexceptions
CFLAGS-fgetgrent_r.c = -fexceptions -D_IO_MTSAFE_IO
CFLAGS-putgrent.c = -fexceptions -D_IO_MTSAFE_IO
-CFLAGS-initgroups.c = -fexceptions
+CFLAGS-initgroups.c = -DUSE_NSCD=1 -fexceptions
CFLAGS-getgrgid.c = -fexceptions
endif
diff --git a/grp/compat-initgroups.c b/grp/compat-initgroups.c
new file mode 100644
index 0000000..585c4ae
--- /dev/null
+++ b/grp/compat-initgroups.c
@@ -0,0 +1,98 @@
+/* Prototype for the setgrent functions we use here. */
+typedef enum nss_status (*set_function) (void);
+
+/* Prototype for the endgrent functions we use here. */
+typedef enum nss_status (*end_function) (void);
+
+/* Prototype for the setgrent functions we use here. */
+typedef enum nss_status (*get_function) (struct group *, char *,
+ size_t, int *);
+
+static enum nss_status
+compat_call (service_user *nip, const char *user, gid_t group, long int *start,
+ long int *size, gid_t **groupsp, long int limit, int *errnop)
+{
+ struct group grpbuf;
+ size_t buflen = __sysconf (_SC_GETGR_R_SIZE_MAX);
+ char *tmpbuf;
+ enum nss_status status;
+ set_function setgrent_fct;
+ get_function getgrent_fct;
+ end_function endgrent_fct;
+ gid_t *groups = *groupsp;
+
+ getgrent_fct = __nss_lookup_function (nip, "getgrent_r");
+ if (getgrent_fct == NULL)
+ return NSS_STATUS_UNAVAIL;
+
+ setgrent_fct = __nss_lookup_function (nip, "setgrent");
+ if (setgrent_fct)
+ {
+ status = DL_CALL_FCT (setgrent_fct, ());
+ if (status != NSS_STATUS_SUCCESS)
+ return status;
+ }
+
+ endgrent_fct = __nss_lookup_function (nip, "endgrent");
+
+ tmpbuf = __alloca (buflen);
+
+ do
+ {
+ while ((status = DL_CALL_FCT (getgrent_fct,
+ (&grpbuf, tmpbuf, buflen, errnop)),
+ status == NSS_STATUS_TRYAGAIN)
+ && *errnop == ERANGE)
+ {
+ buflen *= 2;
+ tmpbuf = __alloca (buflen);
+ }
+
+ if (status != NSS_STATUS_SUCCESS)
+ goto done;
+
+ if (grpbuf.gr_gid != group)
+ {
+ char **m;
+
+ for (m = grpbuf.gr_mem; *m != NULL; ++m)
+ if (strcmp (*m, user) == 0)
+ {
+ /* Matches user. Insert this group. */
+ if (__builtin_expect (*start == *size, 0))
+ {
+ /* Need a bigger buffer. */
+ gid_t *newgroups;
+ long int newsize;
+
+ if (limit > 0 && *size == limit)
+ /* We reached the maximum. */
+ goto done;
+
+ if (limit <= 0)
+ newsize = 2 * *size;
+ else
+ newsize = MIN (limit, 2 * *size);
+
+ newgroups = realloc (groups, newsize * sizeof (*groups));
+ if (newgroups == NULL)
+ goto done;
+ *groupsp = groups = newgroups;
+ *size = newsize;
+ }
+
+ groups[*start] = grpbuf.gr_gid;
+ *start += 1;
+
+ break;
+ }
+ }
+ }
+ while (status == NSS_STATUS_SUCCESS);
+
+ done:
+ if (endgrent_fct)
+ DL_CALL_FCT (endgrent_fct, ());
+
+ return NSS_STATUS_SUCCESS;
+}
diff --git a/grp/initgroups.c b/grp/initgroups.c
index 858dd31..9e79273 100644
--- a/grp/initgroups.c
+++ b/grp/initgroups.c
@@ -27,19 +27,14 @@
#include <sys/types.h>
#include <nsswitch.h>
+#include "../nscd/nscd-client.h"
+#include "../nscd/nscd_proto.h"
+
+
/* Type of the lookup function. */
typedef enum nss_status (*initgroups_dyn_function) (const char *, gid_t,
long int *, long int *,
gid_t **, long int, int *);
-/* Prototype for the setgrent functions we use here. */
-typedef enum nss_status (*set_function) (void);
-
-/* Prototype for the endgrent functions we use here. */
-typedef enum nss_status (*end_function) (void);
-
-/* Prototype for the setgrent functions we use here. */
-typedef enum nss_status (*get_function) (struct group *, char *,
- size_t, int *);
/* The lookup function for the first entry of this service. */
extern int __nss_group_lookup (service_user **nip, const char *name,
@@ -48,99 +43,29 @@ extern void *__nss_lookup_function (service_user *ni, const char *fct_name);
extern service_user *__nss_group_database attribute_hidden;
-static enum nss_status
-compat_call (service_user *nip, const char *user, gid_t group, long int *start,
- long int *size, gid_t **groupsp, long int limit, int *errnop)
-{
- struct group grpbuf;
- size_t buflen = __sysconf (_SC_GETGR_R_SIZE_MAX);
- char *tmpbuf;
- enum nss_status status;
- set_function setgrent_fct;
- get_function getgrent_fct;
- end_function endgrent_fct;
- gid_t *groups = *groupsp;
-
- getgrent_fct = __nss_lookup_function (nip, "getgrent_r");
- if (getgrent_fct == NULL)
- return NSS_STATUS_UNAVAIL;
-
- setgrent_fct = __nss_lookup_function (nip, "setgrent");
- if (setgrent_fct)
- {
- status = DL_CALL_FCT (setgrent_fct, ());
- if (status != NSS_STATUS_SUCCESS)
- return status;
- }
- endgrent_fct = __nss_lookup_function (nip, "endgrent");
+#include "compat-initgroups.c"
- tmpbuf = __alloca (buflen);
-
- do
- {
- while ((status = DL_CALL_FCT (getgrent_fct,
- (&grpbuf, tmpbuf, buflen, errnop)),
- status == NSS_STATUS_TRYAGAIN)
- && *errnop == ERANGE)
- {
- buflen *= 2;
- tmpbuf = __alloca (buflen);
- }
-
- if (status != NSS_STATUS_SUCCESS)
- goto done;
-
- if (grpbuf.gr_gid != group)
- {
- char **m;
-
- for (m = grpbuf.gr_mem; *m != NULL; ++m)
- if (strcmp (*m, user) == 0)
- {
- /* Matches user. Insert this group. */
- if (__builtin_expect (*start == *size, 0))
- {
- /* Need a bigger buffer. */
- gid_t *newgroups;
- long int newsize;
-
- if (limit > 0 && *size == limit)
- /* We reached the maximum. */
- goto done;
-
- if (limit <= 0)
- newsize = 2 * *size;
- else
- newsize = MIN (limit, 2 * *size);
-
- newgroups = realloc (groups, newsize * sizeof (*groups));
- if (newgroups == NULL)
- goto done;
- *groupsp = groups = newgroups;
- *size = newsize;
- }
-
- groups[*start] = grpbuf.gr_gid;
- *start += 1;
-
- break;
- }
- }
- }
- while (status == NSS_STATUS_SUCCESS);
-
- done:
- if (endgrent_fct)
- DL_CALL_FCT (endgrent_fct, ());
-
- return NSS_STATUS_SUCCESS;
-}
static int
internal_getgrouplist (const char *user, gid_t group, long int *size,
gid_t **groupsp, long int limit)
{
+#ifdef USE_NSCD
+ if (__nss_not_use_nscd_group > 0
+ && ++__nss_not_use_nscd_group > NSS_NSCD_RETRY)
+ __nss_not_use_nscd_group = 0;
+ if (!__nss_not_use_nscd_group)
+ {
+ int n = __nscd_getgrouplist (user, group, size, groupsp, limit);
+ if (n >= 0)
+ return n;
+
+ /* nscd is not usable. */
+ __nss_not_use_nscd_group = 1;
+ }
+#endif
+
service_user *nip = NULL;
initgroups_dyn_function fct;
enum nss_status status = NSS_STATUS_UNAVAIL;
@@ -205,6 +130,10 @@ getgrouplist (const char *user, gid_t group, gid_t *groups, int *ngroups)
newgroups = (gid_t *) malloc (size * sizeof (gid_t));
if (__builtin_expect (newgroups == NULL, 0))
/* No more memory. */
+ // XXX This is wrong. The user provided memory, we have to use
+ // XXX it. The internal functions must be called with the user
+ // XXX provided buffer and not try to increase the size if it is
+ // XXX too small. For initgroups a flag could say: increase size.
return -1;
result = internal_getgrouplist (user, group, &size, &newgroups, -1);
diff --git a/nscd/Makefile b/nscd/Makefile
index d24bf9c..bf79606 100644
--- a/nscd/Makefile
+++ b/nscd/Makefile
@@ -21,7 +21,7 @@
#
subdir := nscd
-routines := nscd_getpw_r nscd_getgr_r nscd_gethst_r nscd_getai
+routines := nscd_getpw_r nscd_getgr_r nscd_gethst_r nscd_getai nscd_initgroups
aux := nscd_helper
include ../Makeconfig
@@ -32,7 +32,7 @@ vpath %.c ../locale/programs
nscd-modules := nscd connections pwdcache getpwnam_r getpwuid_r grpcache \
getgrnam_r getgrgid_r hstcache gethstbyad_r gethstbynm2_r \
dbg_log nscd_conf nscd_stat cache mem nscd_setup_thread \
- xmalloc xstrdup aicache
+ xmalloc xstrdup aicache initgrcache
ifeq ($(have-thread-library),yes)
diff --git a/nscd/cache.c b/nscd/cache.c
index 468b8d2..efac4b3 100644
--- a/nscd/cache.c
+++ b/nscd/cache.c
@@ -317,6 +317,10 @@ prune_cache (struct database_dyn *table, time_t now)
readdhstai (table, runp, dh);
break;
+ case INITGROUPS:
+ readdinitgroups (table, runp, dh);
+ break;
+
default:
assert (! "should never happen");
}
diff --git a/nscd/connections.c b/nscd/connections.c
index 164fdfb..5de7c3b 100644
--- a/nscd/connections.c
+++ b/nscd/connections.c
@@ -85,7 +85,8 @@ const char *serv2str[LASTREQ] =
[GETFDPW] = "GETFDPW",
[GETFDGR] = "GETFDGR",
[GETFDHST] = "GETFDHST",
- [GETAI] = "GETAI"
+ [GETAI] = "GETAI",
+ [INITGROUPS] = "INITGROUPS"
};
/* The control data structures for the services. */
@@ -154,6 +155,7 @@ static struct database_dyn *const serv2db[LASTREQ] =
[GETFDGR] = &dbs[grpdb],
[GETFDHST] = &dbs[hstdb],
[GETAI] = &dbs[hstdb],
+ [INITGROUPS] = &dbs[grpdb]
};
@@ -604,9 +606,11 @@ cannot handle old request version %d; current version is %d"),
struct database_dyn *db = serv2db[req->type];
+ // XXX Clean up so that each new command need not introduce a
+ // XXX new conditional.
if ((__builtin_expect (req->type, GETPWBYNAME) >= GETPWBYNAME
&& __builtin_expect (req->type, LASTDBREQ) <= LASTDBREQ)
- || req->type == GETAI)
+ || req->type == GETAI || req->type == INITGROUPS)
{
if (__builtin_expect (debug_level, 0) > 0)
{
@@ -719,6 +723,10 @@ cannot handle old request version %d; current version is %d"),
addhstai (db, fd, req, key, uid);
break;
+ case INITGROUPS:
+ addinitgroups (db, fd, req, key, uid);
+ break;
+
case GETSTAT:
case SHUTDOWN:
case INVALIDATE:
diff --git a/nscd/initgrcache.c b/nscd/initgrcache.c
new file mode 100644
index 0000000..124b4ba
--- /dev/null
+++ b/nscd/initgrcache.c
@@ -0,0 +1,391 @@
+/* Cache handling for host lookup.
+ Copyright (C) 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <assert.h>
+#include <errno.h>
+#include <grp.h>
+#include <libintl.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <dbg_log.h>
+#include <nscd.h>
+
+#include "../nss/nsswitch.h"
+
+
+/* Type of the lookup function. */
+typedef enum nss_status (*initgroups_dyn_function) (const char *, gid_t,
+ long int *, long int *,
+ gid_t **, long int, int *);
+
+
+static const initgr_response_header notfound =
+{
+ .version = NSCD_VERSION,
+ .found = 0,
+ .ngrps = 0
+};
+
+
+#include "../grp/compat-initgroups.c"
+
+
+static void
+addinitgroupsX (struct database_dyn *db, int fd, request_header *req,
+ void *key, uid_t uid, struct hashentry *he,
+ struct datahead *dh)
+{
+ /* Search for the entry matching the key. Please note that we don't
+ look again in the table whether the dataset is now available. We
+ simply insert it. It does not matter if it is in there twice. The
+ pruning function only will look at the timestamp. */
+
+
+ /* We allocate all data in one memory block: the iov vector,
+ the response header and the dataset itself. */
+ struct dataset
+ {
+ struct datahead head;
+ initgr_response_header resp;
+ char strdata[0];
+ } *dataset = NULL;
+
+ if (__builtin_expect (debug_level > 0, 0))
+ {
+ if (he == NULL)
+ dbg_log (_("Haven't found \"%s\" in group cache!"), (char *) key);
+ else
+ dbg_log (_("Reloading \"%s\" in group cache!"), (char *) key);
+ }
+
+ static service_user *group_database;
+ service_user *nip = NULL;
+ int no_more;
+
+ if (group_database != NULL)
+ {
+ nip = group_database;
+ no_more = 0;
+ }
+ else
+ no_more = __nss_database_lookup ("group", NULL,
+ "compat [NOTFOUND=return] files", &nip);
+
+ /* We always use sysconf even if NGROUPS_MAX is defined. That way, the
+ limit can be raised in the kernel configuration without having to
+ recompile libc. */
+ long int limit = __sysconf (_SC_NGROUPS_MAX);
+
+ long int size;
+ if (limit > 0)
+ /* We limit the size of the intially allocated array. */
+ size = MIN (limit, 64);
+ else
+ /* No fixed limit on groups. Pick a starting buffer size. */
+ size = 16;
+
+ long int start = 0;
+ bool all_tryagain = true;
+
+ /* This is temporary memory, we need not (ad must not) call
+ mempool_alloc. */
+ // XXX This really should use alloca. need to change the backends.
+ gid_t *groups = (gid_t *) malloc (size * sizeof (gid_t));
+ if (__builtin_expect (groups == NULL, 0))
+ /* No more memory. */
+ goto out;
+
+ /* Nothing added yet. */
+ while (! no_more)
+ {
+ enum nss_status status;
+ initgroups_dyn_function fct;
+ fct = __nss_lookup_function (nip, "initgroups_dyn");
+
+ if (fct == NULL)
+ {
+ status = compat_call (nip, key, -1, &start, &size, &groups,
+ limit, &errno);
+
+ if (nss_next_action (nip, NSS_STATUS_UNAVAIL) != NSS_ACTION_CONTINUE)
+ break;
+ }
+ else
+ status = DL_CALL_FCT (fct, (key, -1, &start, &size, &groups,
+ limit, &errno));
+
+ if (status != NSS_STATUS_TRYAGAIN)
+ all_tryagain = false;
+
+ /* This is really only for debugging. */
+ if (NSS_STATUS_TRYAGAIN > status || status > NSS_STATUS_RETURN)
+ __libc_fatal ("illegal status in internal_getgrouplist");
+
+ if (status != NSS_STATUS_SUCCESS
+ && nss_next_action (nip, status) == NSS_ACTION_RETURN)
+ break;
+
+ if (nip->next == NULL)
+ no_more = -1;
+ else
+ nip = nip->next;
+ }
+
+ ssize_t total;
+ ssize_t written;
+ out:
+ if (start == 0)
+ {
+ /* Nothing found. Create a negative result record. */
+ written = total = sizeof (notfound);
+
+ if (he != NULL && all_tryagain)
+ {
+ /* If we have an old record available but cannot find one now
+ because the service is not available we keep the old record
+ and make sure it does not get removed. */
+ if (reload_count != UINT_MAX && dh->nreloads == reload_count)
+ /* Do not reset the value if we never not reload the record. */
+ dh->nreloads = reload_count - 1;
+ }
+ else
+ {
+ /* We have no data. This means we send the standard reply for this
+ case. */
+ if (fd != -1)
+ written = TEMP_FAILURE_RETRY (write (fd, &notfound, total));
+
+ dataset = mempool_alloc (db, sizeof (struct dataset) + req->key_len);
+ /* If we cannot permanently store the result, so be it. */
+ if (dataset != NULL)
+ {
+ dataset->head.allocsize = sizeof (struct dataset) + req->key_len;
+ dataset->head.recsize = total;
+ dataset->head.notfound = true;
+ dataset->head.nreloads = 0;
+ dataset->head.usable = true;
+
+ /* Compute the timeout time. */
+ dataset->head.timeout = time (NULL) + db->negtimeout;
+
+ /* This is the reply. */
+ memcpy (&dataset->resp, &notfound, total);
+
+ /* Copy the key data. */
+ char *key_copy = memcpy (dataset->strdata, key, req->key_len);
+
+ /* If necessary, we also propagate the data to disk. */
+ if (db->persistent)
+ {
+ // XXX async OK?
+ uintptr_t pval = (uintptr_t) dataset & ~pagesize_m1;
+ msync ((void *) pval,
+ ((uintptr_t) dataset & pagesize_m1)
+ + sizeof (struct dataset) + req->key_len, MS_ASYNC);
+ }
+
+ /* Now get the lock to safely insert the records. */
+ pthread_rwlock_rdlock (&db->lock);
+
+ if (cache_add (req->type, key_copy, req->key_len,
+ &dataset->head, true, db, uid) < 0)
+ /* Ensure the data can be recovered. */
+ dataset->head.usable = false;
+
+ pthread_rwlock_unlock (&db->lock);
+
+ /* Mark the old entry as obsolete. */
+ if (dh != NULL)
+ dh->usable = false;
+ }
+ else
+ ++db->head->addfailed;
+ }
+ }
+ else
+ {
+
+ written = total = sizeof (struct dataset) + start * sizeof (int32_t);
+
+ /* If we refill the cache, first assume the reconrd did not
+ change. Allocate memory on the cache since it is likely
+ discarded anyway. If it turns out to be necessary to have a
+ new record we can still allocate real memory. */
+ bool alloca_used = false;
+ dataset = NULL;
+
+ if (he == NULL)
+ {
+ dataset = (struct dataset *) mempool_alloc (db,
+ total + req->key_len);
+ if (dataset == NULL)
+ ++db->head->addfailed;
+ }
+
+ if (dataset == NULL)
+ {
+ /* We cannot permanently add the result in the moment. But
+ we can provide the result as is. Store the data in some
+ temporary memory. */
+ dataset = (struct dataset *) alloca (total + req->key_len);
+
+ /* We cannot add this record to the permanent database. */
+ alloca_used = true;
+ }
+
+ dataset->head.allocsize = total + req->key_len;
+ dataset->head.recsize = total - offsetof (struct dataset, resp);
+ dataset->head.notfound = false;
+ dataset->head.nreloads = he == NULL ? 0 : (dh->nreloads + 1);
+ dataset->head.usable = true;
+
+ /* Compute the timeout time. */
+ dataset->head.timeout = time (NULL) + db->postimeout;
+
+ dataset->resp.version = NSCD_VERSION;
+ dataset->resp.found = 1;
+ dataset->resp.ngrps = start;
+
+ char *cp = dataset->strdata;
+
+ /* Copy the GID values. If the size of the types match this is
+ very simple. */
+ if (sizeof (gid_t) == sizeof (int32_t))
+ cp = mempcpy (cp, groups, start * sizeof (gid_t));
+ else
+ {
+ gid_t *gcp = (gid_t *) cp;
+
+ for (int i = 0; i < start; ++i)
+ *gcp++ = groups[i];
+
+ cp = (char *) gcp;
+ }
+
+ /* Finally the user name. */
+ memcpy (cp, key, req->key_len);
+
+ /* Now we can determine whether on refill we have to create a new
+ record or not. */
+ if (he != NULL)
+ {
+ assert (fd == -1);
+
+ if (total + req->key_len == dh->allocsize
+ && total - offsetof (struct dataset, resp) == dh->recsize
+ && memcmp (&dataset->resp, dh->data,
+ dh->allocsize - offsetof (struct dataset, resp)) == 0)
+ {
+ /* The data has not changed. We will just bump the
+ timeout value. Note that the new record has been
+ allocated on the stack and need not be freed. */
+ dh->timeout = dataset->head.timeout;
+ ++dh->nreloads;
+ }
+ else
+ {
+ /* We have to create a new record. Just allocate
+ appropriate memory and copy it. */
+ struct dataset *newp
+ = (struct dataset *) mempool_alloc (db, total + req->key_len);
+ if (newp != NULL)
+ {
+ /* Adjust pointer into the memory block. */
+ cp = (char *) newp + (cp - (char *) dataset);
+
+ dataset = memcpy (newp, dataset, total + req->key_len);
+ alloca_used = false;
+ }
+
+ /* Mark the old record as obsolete. */
+ dh->usable = false;
+ }
+ }
+ else
+ {
+ /* We write the dataset before inserting it to the database
+ since while inserting this thread might block and so would
+ unnecessarily let the receiver wait. */
+ assert (fd != -1);
+
+ written = TEMP_FAILURE_RETRY (write (fd, &dataset->resp, total));
+ }
+
+
+ /* Add the record to the database. But only if it has not been
+ stored on the stack. */
+ if (! alloca_used)
+ {
+ /* If necessary, we also propagate the data to disk. */
+ if (db->persistent)
+ {
+ // XXX async OK?
+ uintptr_t pval = (uintptr_t) dataset & ~pagesize_m1;
+ msync ((void *) pval,
+ ((uintptr_t) dataset & pagesize_m1) + total +
+ req->key_len, MS_ASYNC);
+ }
+
+ /* Now get the lock to safely insert the records. */
+ pthread_rwlock_rdlock (&db->lock);
+
+ if (cache_add (INITGROUPS, cp, req->key_len, &dataset->head, true,
+ db, uid) < 0)
+ /* Could not allocate memory. Make sure the data gets
+ discarded. */
+ dataset->head.usable = false;
+
+ pthread_rwlock_unlock (&db->lock);
+ }
+ }
+
+ free (groups);
+
+ if (__builtin_expect (written != total, 0) && debug_level > 0)
+ {
+ char buf[256];
+ dbg_log (_("short write in %s: %s"), __FUNCTION__,
+ strerror_r (errno, buf, sizeof (buf)));
+ }
+}
+
+
+void
+addinitgroups (struct database_dyn *db, int fd, request_header *req, void *key,
+ uid_t uid)
+{
+ addinitgroupsX (db, fd, req, key, uid, NULL, NULL);
+}
+
+
+void
+readdinitgroups (struct database_dyn *db, struct hashentry *he,
+ struct datahead *dh)
+{
+ request_header req =
+ {
+ .type = INITGROUPS,
+ .key_len = he->len
+ };
+
+ addinitgroupsX (db, -1, &req, db->data + he->key, he->owner, he, dh);
+}
diff --git a/nscd/nscd-client.h b/nscd/nscd-client.h
index 4451349..930255c 100644
--- a/nscd/nscd-client.h
+++ b/nscd/nscd-client.h
@@ -62,6 +62,7 @@ typedef enum
GETFDGR,
GETFDHST,
GETAI,
+ INITGROUPS,
LASTREQ
} request_type;
@@ -140,6 +141,15 @@ struct nscd_ai_result
char *addrs;
};
+/* Structure sent in reply to initgroups query. Note that this struct is
+ sent also if the service is disabled or there is no record found. */
+typedef struct
+{
+ int32_t version;
+ int32_t found;
+ nscd_ssize_t ngrps;
+} initgr_response_header;
+
/* Type for offsets in data part of database. */
typedef uint32_t ref_t;
@@ -173,6 +183,7 @@ struct datahead
gr_response_header grdata;
hst_response_header hstdata;
ai_response_header aidata;
+ initgr_response_header initgrdata;
nscd_ssize_t align1;
nscd_time_t align2;
} data[0];
@@ -244,7 +255,7 @@ struct mapped_database
const struct database_pers_head *head;
const char *data;
size_t mapsize;
- int counter; /* > 0 indicates it isusable. */
+ int counter; /* > 0 indicates it is usable. */
};
#define NO_MAPPING ((struct mapped_database *) -1l)
diff --git a/nscd/nscd_getai.c b/nscd/nscd_getai.c
index a9eac48..6a4476f 100644
--- a/nscd/nscd_getai.c
+++ b/nscd/nscd_getai.c
@@ -23,7 +23,6 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
-#include <sys/mman.h>
#include <not-cancel.h>
#include "nscd-client.h"
diff --git a/nscd/nscd_initgroups.c b/nscd/nscd_initgroups.c
new file mode 100644
index 0000000..513d35d
--- /dev/null
+++ b/nscd/nscd_initgroups.c
@@ -0,0 +1,158 @@
+/* Copyright (C) 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <assert.h>
+#include <errno.h>
+#include <grp.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <not-cancel.h>
+
+#include "nscd-client.h"
+#include "nscd_proto.h"
+
+
+libc_locked_map_ptr (map_handle);
+/* Note that we only free the structure if necessary. The memory
+ mapping is not removed since it is not visible to the malloc
+ handling. */
+libc_freeres_fn (gr_map_free)
+{
+
+ if (map_handle.mapped != NO_MAPPING)
+ free (map_handle.mapped);
+}
+
+
+int
+__nscd_getgrouplist (const char *user, gid_t group, long int *size,
+ gid_t **groupsp, long int limit)
+{
+ size_t userlen = strlen (user) + 1;
+ const initgr_response_header *initgr_resp = NULL;
+ char *respdata = NULL;
+ int retval = -1;
+ int sock = -1;
+ int gc_cycle;
+
+ /* If the mapping is available, try to search there instead of
+ communicating with the nscd. */
+ struct mapped_database *mapped = __nscd_get_map_ref (GETFDGR, "group",
+ &map_handle, &gc_cycle);
+ retry:
+ if (mapped != NO_MAPPING)
+ {
+ const struct datahead *found = __nscd_cache_search (INITGROUPS, user,
+ userlen, mapped);
+ if (found != NULL)
+ {
+ initgr_resp = &found->data[0].initgrdata;
+ respdata = (char *) (initgr_resp + 1);
+ char *recend = (char *) found->data + found->recsize;
+
+ if (respdata + initgr_resp->ngrps * sizeof (int32_t) > recend)
+ goto out;
+ }
+ }
+
+ /* If we do not have the cache mapped, try to get the data over the
+ socket. */
+ initgr_response_header initgr_resp_mem;
+ if (initgr_resp == NULL)
+ {
+ sock = __nscd_open_socket (user, userlen, INITGROUPS, &initgr_resp_mem,
+ sizeof (initgr_resp_mem));
+ if (sock == -1)
+ /* nscd not running or wrong version or hosts caching disabled. */
+ __nss_not_use_nscd_group = 1;
+
+ initgr_resp = &initgr_resp_mem;
+ }
+
+ if (initgr_resp->found == 1)
+ {
+ /* The following code assumes that gid_t and int32_t are the
+ same size. This is the case for al existing implementation.
+ If this should change some code needs to be added which
+ doesn't use memcpy but instead copies each array element one
+ by one. */
+ assert (sizeof (int32_t) == sizeof (gid_t));
+
+ /* Make sure we have enough room. We always count GROUP in even
+ though we might not end up adding it. */
+ if (*size < initgr_resp->ngrps + 1)
+ {
+ gid_t *newp = realloc (*groupsp,
+ (initgr_resp->ngrps + 1) * sizeof (gid_t));
+ if (newp == NULL)
+ /* We cannot increase the buffer size. */
+ goto out;
+
+ *groupsp = newp;
+ *size = initgr_resp->ngrps + 1;
+ }
+
+ if (respdata == NULL)
+ {
+ /* Read the data from the socket. */
+ if ((size_t) TEMP_FAILURE_RETRY (__read (sock, *groupsp,
+ initgr_resp->ngrps
+ * sizeof (gid_t)))
+ == initgr_resp->ngrps * sizeof (gid_t))
+ retval = initgr_resp->ngrps;
+ }
+ else
+ {
+ /* Just copy the data. */
+ retval = initgr_resp->ngrps;
+ memcpy (*groupsp, respdata, retval * sizeof (gid_t));
+ }
+
+ /* Check whether GROUP is part of the mix. If not, add it. */
+ if (retval >= 0)
+ {
+ int cnt;
+ for (cnt = 0; cnt < retval; ++cnt)
+ if ((*groupsp)[cnt] == group)
+ break;
+
+ if (cnt == retval)
+ (*groupsp)[retval++] = group;
+ }
+ }
+ else
+ {
+ /* The `errno' to some value != ERANGE. */
+ __set_errno (ENOENT);
+ /* Even though we have not found anything, the result is zero. */
+ retval = 0;
+ }
+
+ if (sock != -1)
+ close_not_cancel_no_status (sock);
+ out:
+ if (__nscd_drop_map_ref (mapped, gc_cycle) != 0)
+ /* When we come here this means there has been a GC cycle while we
+ were looking for the data. This means the data might have been
+ inconsistent. Retry. */
+ goto retry;
+
+ return retval;
+}
diff --git a/nscd/nscd_proto.h b/nscd/nscd_proto.h
index eb685a5..64d9bd0 100644
--- a/nscd/nscd_proto.h
+++ b/nscd/nscd_proto.h
@@ -45,7 +45,7 @@ extern int __nscd_getpwuid_r (uid_t uid, struct passwd *resultbuf,
extern int __nscd_getgrnam_r (const char *name, struct group *resultbuf,
char *buffer, size_t buflen,
struct group **result);
-extern int __nscd_getgrgid_r (uid_t uid, struct group *resultbuf,
+extern int __nscd_getgrgid_r (gid_t gid, struct group *resultbuf,
char *buffer, size_t buflen,
struct group **result);
extern int __nscd_gethostbyname_r (const char *name,
@@ -62,5 +62,6 @@ extern int __nscd_gethostbyaddr_r (const void *addr, socklen_t len, int type,
struct hostent **result, int *h_errnop);
extern int __nscd_getai (const char *key, struct nscd_ai_result **result,
int *h_errnop);
-
+extern int __nscd_getgrouplist (const char *user, gid_t group, long int *size,
+ gid_t **groupsp, long int limit);
#endif /* _NSCD_PROTO_H */
diff --git a/nscd/selinux.c b/nscd/selinux.c
index 0f975f7..77651e0 100644
--- a/nscd/selinux.c
+++ b/nscd/selinux.c
@@ -56,7 +56,8 @@ static const int perms[LASTREQ] =
[GETFDPW] = NSCD__SHMEMPWD,
[GETFDGR] = NSCD__SHMEMGRP,
[GETFDHST] = NSCD__SHMEMHOST,
- [GETAI] = NSCD__GETHOST
+ [GETAI] = NSCD__GETHOST,
+ [INITGROUPS] = NSCD__GETGRP
};
/* Store an entry ref to speed AVC decisions. */
diff --git a/sunrpc/clnt_udp.c b/sunrpc/clnt_udp.c
index 1836ff3..f3787dd 100644
--- a/sunrpc/clnt_udp.c
+++ b/sunrpc/clnt_udp.c
@@ -244,6 +244,7 @@ is_network_up (int sock)
while (run != NULL)
{
if ((run->ifa_flags & IFF_UP) != 0
+ && run->ifa_addr != NULL
&& run->ifa_addr->sa_family == AF_INET)
break;
diff --git a/sunrpc/get_myaddr.c b/sunrpc/get_myaddr.c
index c0beee9..4449c53 100644
--- a/sunrpc/get_myaddr.c
+++ b/sunrpc/get_myaddr.c
@@ -76,7 +76,9 @@ get_myaddress (struct sockaddr_in *addr)
run = ifa;
while (run != NULL)
{
- if ((run->ifa_flags & IFF_UP) && run->ifa_addr->sa_family == AF_INET
+ if ((run->ifa_flags & IFF_UP)
+ && run->ifa_addr != NULL
+ && run->ifa_addr->sa_family == AF_INET
&& (!(run->ifa_flags & IFF_LOOPBACK)
|| (loopback == 1 && (run->ifa_flags & IFF_LOOPBACK))))
{
diff --git a/sunrpc/pmap_clnt.c b/sunrpc/pmap_clnt.c
index aa5740c..3e42960 100644
--- a/sunrpc/pmap_clnt.c
+++ b/sunrpc/pmap_clnt.c
@@ -70,7 +70,9 @@ __get_myaddress (struct sockaddr_in *addr)
run = ifa;
while (run != NULL)
{
- if ((run->ifa_flags & IFF_UP) && run->ifa_addr->sa_family == AF_INET
+ if ((run->ifa_flags & IFF_UP)
+ && run->ifa_addr != NULL
+ && run->ifa_addr->sa_family == AF_INET
&& ((run->ifa_flags & IFF_LOOPBACK) || loopback == 0))
{
*addr = *((struct sockaddr_in *) run->ifa_addr);
diff --git a/sunrpc/pmap_rmt.c b/sunrpc/pmap_rmt.c
index 4ff707a..644d503 100644
--- a/sunrpc/pmap_rmt.c
+++ b/sunrpc/pmap_rmt.c
@@ -191,6 +191,7 @@ getbroadcastnets (struct in_addr *addrs, int naddrs)
{
if ((run->ifa_flags & IFF_BROADCAST) != 0
&& (run->ifa_flags & IFF_UP) != 0
+ && run->ifa_addr != NULL
&& run->ifa_addr->sa_family == AF_INET)
/* Copy the broadcast address. */
addrs[i++] = ((struct sockaddr_in *) run->ifa_broadaddr)->sin_addr;