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authorUlrich Drepper <drepper@redhat.com>2006-04-28 21:08:22 +0000
committerUlrich Drepper <drepper@redhat.com>2006-04-28 21:08:22 +0000
commit4eaa9bb48b319803544909a085651fc6ff4a9ea1 (patch)
tree82576e0a3da147dbad681d17ef6bb3aec4f0ba0d /nis
parentee821689eb2a2db7d303d4e3efa7ef54f502c854 (diff)
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* nis/nss-default.c (vars): Add SETENT_BATCH_READ.
* nis/nss: Document SETENT_BATCH_READ. * nis/libnsl.h: Define NSS_FLAG_SETENT_BATCH_READ. * nis/nss_nis/nis-service.c (saveit): Don't add NUL byte if the string is already NUL terminated. (internal_nis_endservent): No need to return anything. Change callers. (internal_nis_setservent): One more initialization. * nis/nss_nis/nis-pwd.c: Support SETENT_BATCH_READ option. * nis/nss_nis/nis-grp.c: Likewise. * nis/nss-default.c (init): Rewrite parser to get the variables
Diffstat (limited to 'nis')
-rw-r--r--nis/libnsl.h1
-rw-r--r--nis/nss12
-rw-r--r--nis/nss-default.c3
-rw-r--r--nis/nss_nis/nis-grp.c250
-rw-r--r--nis/nss_nis/nis-pwd.c259
-rw-r--r--nis/nss_nis/nis-service.c28
6 files changed, 463 insertions, 90 deletions
diff --git a/nis/libnsl.h b/nis/libnsl.h
index e45f24d..9f78469 100644
--- a/nis/libnsl.h
+++ b/nis/libnsl.h
@@ -18,6 +18,7 @@
#define NSS_FLAG_NETID_AUTHORITATIVE 1
#define NSS_FLAG_SERVICES_AUTHORITATIVE 2
+#define NSS_FLAG_SETENT_BATCH_READ 4
/* Get current set of default flags. */
diff --git a/nis/nss b/nis/nss
index 4f65f81..aab40ab 100644
--- a/nis/nss
+++ b/nis/nss
@@ -1,7 +1,7 @@
# /etc/default/nss
# This file can theoretically contain a bunch of customization variables
-# for Name Service Switch in the GNU C library. For now there are only two
-# variables:
+# for Name Service Switch in the GNU C library. For now there are only
+# three variables:
#
# NETID_AUTHORITATIVE
# If set to TRUE, the initgroups() function will accept the information
@@ -18,3 +18,11 @@
# primary service names and service aliases. The system administrator
# has to make sure it is correctly generated.
#SERVICES_AUTHORITATIVE=TRUE
+#
+# SETENT_BATCH_READ
+# If set to TRUE, various setXXent() functions will read the entire
+# database at once and then hand out the requests one by one from
+# memory with every getXXent() call. Otherwise each getXXent() call
+# might result into a network communication with the server to get
+# the next entry.
+#SETENT_BATCH_READ=TRUE
diff --git a/nis/nss-default.c b/nis/nss-default.c
index e3a228d..577f7c2 100644
--- a/nis/nss-default.c
+++ b/nis/nss-default.c
@@ -45,7 +45,8 @@ static const struct
{
#define STRNLEN(s) s, sizeof (s) - 1
{ STRNLEN ("NETID_AUTHORITATIVE"), NSS_FLAG_NETID_AUTHORITATIVE },
- { STRNLEN ("SERVICES_AUTHORITATIVE"), NSS_FLAG_SERVICES_AUTHORITATIVE }
+ { STRNLEN ("SERVICES_AUTHORITATIVE"), NSS_FLAG_SERVICES_AUTHORITATIVE },
+ { STRNLEN ("SETENT_BATCH_READ"), NSS_FLAG_SETENT_BATCH_READ }
};
#define nvars (sizeof (vars) / sizeof (vars[0]))
diff --git a/nis/nss_nis/nis-grp.c b/nis/nss_nis/nis-grp.c
index 68f3ced..10af019 100644
--- a/nis/nss_nis/nis-grp.c
+++ b/nis/nss_nis/nis-grp.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-1999, 2001-2003, 2004, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 1996-1999, 2001-2004, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@suse.de>, 1996.
@@ -17,20 +17,17 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
-#include <nss.h>
-/* The following is an ugly trick to avoid a prototype declaration for
- _nss_nis_endgrent. */
-#define _nss_nis_endgrent _nss_nis_endgrent_XXX
-#include <grp.h>
-#undef _nss_nis_endgrent
#include <ctype.h>
#include <errno.h>
+#include <grp.h>
+#include <nss.h>
#include <string.h>
#include <bits/libc-lock.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include "nss-nis.h"
+#include <libnsl.h>
/* Get the declaration of the parser function. */
#define ENTNAME grent
@@ -45,11 +42,84 @@ static bool_t new_start = 1;
static char *oldkey;
static int oldkeylen;
-enum nss_status
-_nss_nis_setgrent (int stayopen)
+struct response_t
{
- __libc_lock_lock (lock);
+ struct response_t *next;
+ size_t size;
+ char mem[0];
+};
+
+typedef struct intern_t
+{
+ struct response_t *start;
+ struct response_t *next;
+ size_t offset;
+} intern_t;
+
+static intern_t intern;
+
+
+static int
+saveit (int instatus, char *inkey, int inkeylen, char *inval,
+ int invallen, char *indata)
+{
+ if (instatus != YP_TRUE)
+ return 1;
+
+ if (inkey && inkeylen > 0 && inval && invallen > 0)
+ {
+ struct response_t *bucket = intern.next;
+
+ if (__builtin_expect (bucket == NULL, 0))
+ {
+#define MINSIZE 4096 - 4 * sizeof (void *)
+ const size_t minsize = MAX (MINSIZE, 2 * (invallen + 1));
+ bucket = malloc (sizeof (struct response_t) + minsize);
+ if (bucket == NULL)
+ /* We have no error code for out of memory. */
+ return 1;
+
+ bucket->next = NULL;
+ bucket->size = minsize;
+ intern.start = intern.next = bucket;
+ intern.offset = 0;
+ }
+ else if (__builtin_expect (invallen + 1 > bucket->size - intern.offset,
+ 0))
+ {
+ /* We need a new (larger) buffer. */
+ const size_t newsize = 2 * MAX (bucket->size, invallen + 1);
+ struct response_t *newp = malloc (sizeof (struct response_t)
+ + newsize);
+ if (newp == NULL)
+ /* We have no error code for out of memory. */
+ return 1;
+
+ /* Mark the old bucket as full. */
+ bucket->size = intern.offset;
+
+ newp->next = NULL;
+ newp->size = newsize;
+ bucket = intern.next = bucket->next = newp;
+ intern.offset = 0;
+ }
+
+ char *p = mempcpy (&bucket->mem[intern.offset], inval, invallen);
+ if (__builtin_expect (p[-1] != '\0', 0))
+ {
+ *p = '\0';
+ ++invallen;
+ }
+ intern.offset += invallen;
+ }
+
+ return 0;
+}
+
+static void
+internal_nis_endgrent (void)
+{
new_start = 1;
if (oldkey != NULL)
{
@@ -58,21 +128,86 @@ _nss_nis_setgrent (int stayopen)
oldkeylen = 0;
}
+ struct response_t *curr = intern.next;
+
+ while (curr != NULL)
+ {
+ struct response_t *last = curr;
+ curr = curr->next;
+ free (last);
+ }
+
+ intern.next = intern.start = NULL;
+}
+
+
+enum nss_status
+_nss_nis_endgrent (void)
+{
+ __libc_lock_lock (lock);
+
+ internal_nis_endgrent ();
+
__libc_lock_unlock (lock);
return NSS_STATUS_SUCCESS;
}
-/* Make _nss_nis_endgrent an alias of _nss_nis_setgrent. We do this
- even though the prototypes don't match. The argument of setgrent
- is not used so this makes no difference. */
-strong_alias (_nss_nis_setgrent, _nss_nis_endgrent)
+
+
+enum nss_status
+internal_nis_setgrent (void)
+{
+ /* We have to read all the data now. */
+ char *domain;
+ if (__builtin_expect (yp_get_default_domain (&domain), 0))
+ return NSS_STATUS_UNAVAIL;
+
+ struct ypall_callback ypcb;
+
+ ypcb.foreach = saveit;
+ ypcb.data = NULL;
+ enum nss_status status = yperr2nss (yp_all (domain, "group.byname", &ypcb));
+
+
+ /* Mark the last buffer as full. */
+ if (intern.next != NULL)
+ intern.next->size = intern.offset;
+
+ intern.next = intern.start;
+ intern.offset = 0;
+
+ return status;
+}
+
+
+enum nss_status
+_nss_nis_setgrent (int stayopen)
+{
+ enum nss_status result = NSS_STATUS_SUCCESS;
+
+ __libc_lock_lock (lock);
+
+ internal_nis_endgrent ();
+
+ if (_nsl_default_nss () & NSS_FLAG_SETENT_BATCH_READ)
+ result = internal_nis_setgrent ();
+
+ __libc_lock_unlock (lock);
+
+ return result;
+}
+
static enum nss_status
internal_nis_getgrent_r (struct group *grp, char *buffer, size_t buflen,
int *errnop)
{
- char *domain;
- if (__builtin_expect (yp_get_default_domain (&domain), 0))
+ /* If we read the entire database at setpwent time we just iterate
+ over the data we have in memory. */
+ bool batch_read = intern.start != NULL;
+
+ char *domain = NULL;
+ if (!batch_read && __builtin_expect (yp_get_default_domain (&domain), 0))
return NSS_STATUS_UNAVAIL;
/* Get the next entry until we found a correct one. */
@@ -83,23 +218,62 @@ internal_nis_getgrent_r (struct group *grp, char *buffer, size_t buflen,
char *outkey;
int len;
int keylen;
- int yperr;
- if (new_start)
- yperr = yp_first (domain, "group.byname", &outkey, &keylen, &result,
- &len);
- else
- yperr = yp_next (domain, "group.byname", oldkey, oldkeylen, &outkey,
- &keylen, &result, &len);
+ if (batch_read)
+ {
+ struct response_t *bucket;
- if (__builtin_expect (yperr != YPERR_SUCCESS, 0))
- {
- enum nss_status retval = yperr2nss (yperr);
+ handle_batch_read:
+ bucket = intern.next;
- if (retval == NSS_STATUS_TRYAGAIN)
- *errnop = errno;
- return retval;
- }
+ if (__builtin_expect (intern.offset >= bucket->size, 0))
+ {
+ if (bucket->next == NULL)
+ return NSS_STATUS_NOTFOUND;
+
+ /* We look at all the content in the current bucket. Go on
+ to the next. */
+ bucket = intern.next = bucket->next;
+ intern.offset = 0;
+ }
+
+ for (result = &bucket->mem[intern.offset]; isspace (*result);
+ ++result)
+ ++intern.offset;
+
+ len = strlen (result);
+ }
+ else
+ {
+ int yperr;
+
+ if (new_start)
+ {
+ /* Maybe we should read the database in one piece. */
+ if ((_nsl_default_nss () & NSS_FLAG_SETENT_BATCH_READ)
+ && internal_nis_setgrent () == NSS_STATUS_SUCCESS
+ && intern.start != NULL)
+ {
+ batch_read = true;
+ goto handle_batch_read;
+ }
+
+ yperr = yp_first (domain, "group.byname", &outkey, &keylen,
+ &result, &len);
+ }
+ else
+ yperr = yp_next (domain, "group.byname", oldkey, oldkeylen,
+ &outkey, &keylen, &result, &len);
+
+ if (__builtin_expect (yperr != YPERR_SUCCESS, 0))
+ {
+ enum nss_status retval = yperr2nss (yperr);
+
+ if (retval == NSS_STATUS_TRYAGAIN)
+ *errnop = errno;
+ return retval;
+ }
+ }
if (__builtin_expect ((size_t) (len + 1) > buflen, 0))
{
@@ -112,7 +286,8 @@ internal_nis_getgrent_r (struct group *grp, char *buffer, size_t buflen,
buffer[len] = '\0';
while (isspace (*p))
++p;
- free (result);
+ if (!batch_read)
+ free (result);
parse_res = _nss_files_parse_grent (p, grp, (void *) buffer, buflen,
errnop);
@@ -123,10 +298,15 @@ internal_nis_getgrent_r (struct group *grp, char *buffer, size_t buflen,
return NSS_STATUS_TRYAGAIN;
}
- free (oldkey);
- oldkey = outkey;
- oldkeylen = keylen;
- new_start = 0;
+ if (batch_read)
+ intern.offset += len + 1;
+ else
+ {
+ free (oldkey);
+ oldkey = outkey;
+ oldkeylen = keylen;
+ new_start = 0;
+ }
}
while (parse_res < 1);
diff --git a/nis/nss_nis/nis-pwd.c b/nis/nss_nis/nis-pwd.c
index 457574a..a996b04 100644
--- a/nis/nss_nis/nis-pwd.c
+++ b/nis/nss_nis/nis-pwd.c
@@ -17,20 +17,18 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
-#include <nss.h>
-/* The following is an ugly trick to avoid a prototype declaration for
- _nss_nis_endpwent. */
-#define _nss_nis_endpwent _nss_nis_endpwent_XXX
-#include <pwd.h>
-#undef _nss_nis_endpwent
+#include <assert.h>
#include <ctype.h>
#include <errno.h>
+#include <nss.h>
+#include <pwd.h>
#include <string.h>
#include <bits/libc-lock.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include "nss-nis.h"
+#include <libnsl.h>
/* Get the declaration of the parser function. */
#define ENTNAME pwent
@@ -45,11 +43,84 @@ static bool_t new_start = 1;
static char *oldkey;
static int oldkeylen;
-enum nss_status
-_nss_nis_setpwent (int stayopen)
+struct response_t
{
- __libc_lock_lock (lock);
+ struct response_t *next;
+ size_t size;
+ char mem[0];
+};
+
+typedef struct intern_t
+{
+ struct response_t *start;
+ struct response_t *next;
+ size_t offset;
+} intern_t;
+
+static intern_t intern;
+
+
+static int
+saveit (int instatus, char *inkey, int inkeylen, char *inval,
+ int invallen, char *indata)
+{
+ if (instatus != YP_TRUE)
+ return 1;
+
+ if (inkey && inkeylen > 0 && inval && invallen > 0)
+ {
+ struct response_t *bucket = intern.next;
+
+ if (__builtin_expect (bucket == NULL, 0))
+ {
+#define MINSIZE 4096 - 4 * sizeof (void *)
+ const size_t minsize = MAX (MINSIZE, 2 * (invallen + 1));
+ bucket = malloc (sizeof (struct response_t) + minsize);
+ if (bucket == NULL)
+ /* We have no error code for out of memory. */
+ return 1;
+
+ bucket->next = NULL;
+ bucket->size = minsize;
+ intern.start = intern.next = bucket;
+ intern.offset = 0;
+ }
+ else if (__builtin_expect (invallen + 1 > bucket->size - intern.offset,
+ 0))
+ {
+ /* We need a new (larger) buffer. */
+ const size_t newsize = 2 * MAX (bucket->size, invallen + 1);
+ struct response_t *newp = malloc (sizeof (struct response_t)
+ + newsize);
+ if (newp == NULL)
+ /* We have no error code for out of memory. */
+ return 1;
+
+ /* Mark the old bucket as full. */
+ bucket->size = intern.offset;
+
+ newp->next = NULL;
+ newp->size = newsize;
+ bucket = intern.next = bucket->next = newp;
+ intern.offset = 0;
+ }
+
+ char *p = mempcpy (&bucket->mem[intern.offset], inval, invallen);
+ if (__builtin_expect (p[-1] != '\0', 0))
+ {
+ *p = '\0';
+ ++invallen;
+ }
+ intern.offset += invallen;
+ }
+ return 0;
+}
+
+
+static void
+internal_nis_endpwent (void)
+{
new_start = 1;
if (oldkey != NULL)
{
@@ -58,21 +129,86 @@ _nss_nis_setpwent (int stayopen)
oldkeylen = 0;
}
+ struct response_t *curr = intern.next;
+
+ while (curr != NULL)
+ {
+ struct response_t *last = curr;
+ curr = curr->next;
+ free (last);
+ }
+
+ intern.next = intern.start = NULL;
+}
+
+
+enum nss_status
+_nss_nis_endpwent (void)
+{
+ __libc_lock_lock (lock);
+
+ internal_nis_endpwent ();
+
__libc_lock_unlock (lock);
return NSS_STATUS_SUCCESS;
}
-/* Make _nss_nis_endpwent an alias of _nss_nis_setpwent. We do this
- even though the prototypes don't match. The argument of setpwent
- is not used so this makes no difference. */
-strong_alias (_nss_nis_setpwent, _nss_nis_endpwent)
+
+
+enum nss_status
+internal_nis_setpwent (void)
+{
+ /* We have to read all the data now. */
+ char *domain;
+ if (__builtin_expect (yp_get_default_domain (&domain), 0))
+ return NSS_STATUS_UNAVAIL;
+
+ struct ypall_callback ypcb;
+
+ ypcb.foreach = saveit;
+ ypcb.data = NULL;
+ enum nss_status status = yperr2nss (yp_all (domain, "passwd.byname", &ypcb));
+
+
+ /* Mark the last buffer as full. */
+ if (intern.next != NULL)
+ intern.next->size = intern.offset;
+
+ intern.next = intern.start;
+ intern.offset = 0;
+
+ return status;
+}
+
+
+enum nss_status
+_nss_nis_setpwent (int stayopen)
+{
+ enum nss_status result = NSS_STATUS_SUCCESS;
+
+ __libc_lock_lock (lock);
+
+ internal_nis_endpwent ();
+
+ if (_nsl_default_nss () & NSS_FLAG_SETENT_BATCH_READ)
+ result = internal_nis_setpwent ();
+
+ __libc_lock_unlock (lock);
+
+ return result;
+}
+
static enum nss_status
internal_nis_getpwent_r (struct passwd *pwd, char *buffer, size_t buflen,
int *errnop)
{
- char *domain;
- if (__builtin_expect (yp_get_default_domain (&domain), 0))
+ /* If we read the entire database at setpwent time we just iterate
+ over the data we have in memory. */
+ bool batch_read = intern.start != NULL;
+
+ char *domain = NULL;
+ if (!batch_read && __builtin_expect (yp_get_default_domain (&domain), 0))
return NSS_STATUS_UNAVAIL;
/* Get the next entry until we found a correct one. */
@@ -83,23 +219,62 @@ internal_nis_getpwent_r (struct passwd *pwd, char *buffer, size_t buflen,
char *outkey;
int len;
int keylen;
- int yperr;
- if (new_start)
- yperr = yp_first (domain, "passwd.byname", &outkey, &keylen, &result,
- &len);
+ if (batch_read)
+ {
+ struct response_t *bucket;
+
+ handle_batch_read:
+ bucket = intern.next;
+
+ if (__builtin_expect (intern.offset >= bucket->size, 0))
+ {
+ if (bucket->next == NULL)
+ return NSS_STATUS_NOTFOUND;
+
+ /* We look at all the content in the current bucket. Go on
+ to the next. */
+ bucket = intern.next = bucket->next;
+ intern.offset = 0;
+ }
+
+ for (result = &bucket->mem[intern.offset]; isspace (*result);
+ ++result)
+ ++intern.offset;
+
+ len = strlen (result);
+ }
else
- yperr = yp_next (domain, "passwd.byname", oldkey, oldkeylen, &outkey,
- &keylen, &result, &len);
+ {
+ int yperr;
- if (__builtin_expect (yperr != YPERR_SUCCESS, 0))
- {
- enum nss_status retval = yperr2nss (yperr);
+ if (new_start)
+ {
+ /* Maybe we should read the database in one piece. */
+ if ((_nsl_default_nss () & NSS_FLAG_SETENT_BATCH_READ)
+ && internal_nis_setpwent () == NSS_STATUS_SUCCESS
+ && intern.start != NULL)
+ {
+ batch_read = true;
+ goto handle_batch_read;
+ }
+
+ yperr = yp_first (domain, "passwd.byname", &outkey, &keylen,
+ &result, &len);
+ }
+ else
+ yperr = yp_next (domain, "passwd.byname", oldkey, oldkeylen,
+ &outkey, &keylen, &result, &len);
+
+ if (__builtin_expect (yperr != YPERR_SUCCESS, 0))
+ {
+ enum nss_status retval = yperr2nss (yperr);
- if (retval == NSS_STATUS_TRYAGAIN)
- *errnop = errno;
- return retval;
- }
+ if (retval == NSS_STATUS_TRYAGAIN)
+ *errnop = errno;
+ return retval;
+ }
+ }
/* Check for adjunct style secret passwords. They can be
recognized by a password starting with "##". */
@@ -140,10 +315,10 @@ internal_nis_getpwent_r (struct passwd *pwd, char *buffer, size_t buflen,
return NSS_STATUS_TRYAGAIN;
}
- __mempcpy (__mempcpy (__mempcpy (__mempcpy (buffer, result, namelen),
- ":", 1),
- encrypted, endp - encrypted),
- p, restlen + 1);
+ mempcpy (mempcpy (mempcpy (mempcpy (buffer, result, namelen),
+ ":", 1),
+ encrypted, endp - encrypted),
+ p, restlen + 1);
p = buffer;
free (result2);
@@ -158,13 +333,14 @@ internal_nis_getpwent_r (struct passwd *pwd, char *buffer, size_t buflen,
return NSS_STATUS_TRYAGAIN;
}
- p = strncpy (buffer, result, len);
- buffer[len] = '\0';
+ p = buffer;
+ *((char *) mempcpy (buffer, result, len)) = '\0';
}
while (isspace (*p))
++p;
- free (result);
+ if (!batch_read)
+ free (result);
parse_res = _nss_files_parse_pwent (p, pwd, (void *) buffer, buflen,
errnop);
@@ -175,10 +351,15 @@ internal_nis_getpwent_r (struct passwd *pwd, char *buffer, size_t buflen,
return NSS_STATUS_TRYAGAIN;
}
- free (oldkey);
- oldkey = outkey;
- oldkeylen = keylen;
- new_start = 0;
+ if (batch_read)
+ intern.offset += len + 1;
+ else
+ {
+ free (oldkey);
+ oldkey = outkey;
+ oldkeylen = keylen;
+ new_start = 0;
+ }
}
while (parse_res < 1);
diff --git a/nis/nss_nis/nis-service.c b/nis/nss_nis/nis-service.c
index f5d886f..f705ff7 100644
--- a/nis/nss_nis/nis-service.c
+++ b/nis/nss_nis/nis-service.c
@@ -110,9 +110,13 @@ saveit (int instatus, char *inkey, int inkeylen, char *inval,
intern.offset = 0;
}
- *((char *) mempcpy (&bucket->mem[intern.offset], inval, invallen))
- = '\0';
- intern.offset += invallen + 1;
+ char *p = mempcpy (&bucket->mem[intern.offset], inval, invallen);
+ if (__builtin_expect (p[-1] != '\0', 0))
+ {
+ *p = '\0';
+ ++invallen;
+ }
+ intern.offset += invallen;
}
return 0;
@@ -177,7 +181,7 @@ dosearch (int instatus, char *inkey, int inkeylen, char *inval,
return 0;
}
-static enum nss_status
+static void
internal_nis_endservent (void)
{
struct response_t *curr = intern.next;
@@ -190,22 +194,18 @@ internal_nis_endservent (void)
}
intern.next = intern.start = NULL;
-
- return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_nis_endservent (void)
{
- enum nss_status status;
-
__libc_lock_lock (lock);
- status = internal_nis_endservent ();
+ internal_nis_endservent ();
__libc_lock_unlock (lock);
- return status;
+ return NSS_STATUS_SUCCESS;
}
static enum nss_status
@@ -218,16 +218,18 @@ internal_nis_setservent (void)
if (yp_get_default_domain (&domainname))
return NSS_STATUS_UNAVAIL;
- (void) internal_nis_endservent ();
+ internal_nis_endservent ();
ypcb.foreach = saveit;
ypcb.data = NULL;
status = yperr2nss (yp_all (domainname, "services.byname", &ypcb));
/* Mark the last buffer as full. */
- intern.next->size = intern.offset;
+ if (intern.next != NULL)
+ intern.next->size = intern.offset;
intern.next = intern.start;
+ intern.offset = 0;
return status;
}
@@ -262,7 +264,7 @@ internal_nis_getservent_r (struct servent *serv, char *buffer,
{
struct response_t *bucket = intern.next;
- if (intern.offset >= bucket->size)
+ if (__builtin_expect (intern.offset >= bucket->size, 0))
{
if (bucket->next == NULL)
return NSS_STATUS_NOTFOUND;