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authorUlrich Drepper <drepper@redhat.com>2004-09-30 02:24:51 +0000
committerUlrich Drepper <drepper@redhat.com>2004-09-30 02:24:51 +0000
commitf7e7a396812f5e6a6ec49ad84204d334630964a0 (patch)
treed1a47d6911b5992497cc8aa30d392e7c0f175e12 /grp/initgroups.c
parentUpdate. (diff)
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Update.
* 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.
Diffstat (limited to 'grp/initgroups.c')
-rw-r--r--grp/initgroups.c119
1 files changed, 24 insertions, 95 deletions
diff --git a/grp/initgroups.c b/grp/initgroups.c
index 858dd314e5..9e79273f3e 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);