int
-_nss_nisplus_parse_pwent (nis_result *result, struct passwd *pw,
- char *buffer, size_t buflen, int *errnop)
+_nss_nisplus_parse_pwent_chk (nis_result *result, struct passwd *pw,
+ char *buffer, size_t buflen, int *errnop)
{
- char *first_unused = buffer;
- size_t room_left = buflen;
- size_t len;
-
- if (result == NULL)
- return 0;
-
if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS)
|| NIS_RES_NUMOBJ (result) != 1
|| __type_of (NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ
|| NIS_RES_OBJECT (result)->EN_data.en_cols.en_cols_len < 7)
return 0;
- if (NISENTRYLEN (0, 0, result) >= room_left)
+ return _nss_nisplus_parse_pwent (result, 0, pw, buffer, buflen, errnop);
+}
+
+
+int
+_nss_nisplus_parse_pwent (nis_result *result, size_t entry, struct passwd *pw,
+ char *buffer, size_t buflen, int *errnop)
+{
+ char *first_unused = buffer;
+ size_t room_left = buflen;
+ size_t len;
+
+ if (NISENTRYLEN (entry, 0, result) >= room_left)
{
/* The line is too long for our buffer. */
no_more_room:
return -1;
}
- strncpy (first_unused, NISENTRYVAL (0, 0, result),
- NISENTRYLEN (0, 0, result));
- first_unused[NISENTRYLEN (0, 0, result)] = '\0';
+ strncpy (first_unused, NISENTRYVAL (entry, 0, result),
+ NISENTRYLEN (entry, 0, result));
+ first_unused[NISENTRYLEN (entry, 0, result)] = '\0';
len = strlen (first_unused);
if (len == 0) /* No name ? Should never happen, database is corrupt */
return 0;
pw->pw_name = first_unused;
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
- if (NISENTRYLEN (0, 1, result) >= room_left)
+ if (NISENTRYLEN (entry, 1, result) >= room_left)
goto no_more_room;
- strncpy (first_unused, NISENTRYVAL (0, 1, result),
- NISENTRYLEN (0, 1, result));
- first_unused[NISENTRYLEN (0, 1, result)] = '\0';
+ strncpy (first_unused, NISENTRYVAL (entry, 1, result),
+ NISENTRYLEN (entry, 1, result));
+ first_unused[NISENTRYLEN (entry, 1, result)] = '\0';
pw->pw_passwd = first_unused;
len = strlen (first_unused);
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
- if (NISENTRYLEN(0, 2, result) >= room_left)
+ if (NISENTRYLEN (entry, 2, result) >= room_left)
goto no_more_room;
- strncpy (first_unused, NISENTRYVAL (0, 2, result),
- NISENTRYLEN (0, 2, result));
- first_unused[NISENTRYLEN (0, 2, result)] = '\0';
+ strncpy (first_unused, NISENTRYVAL (entry, 2, result),
+ NISENTRYLEN (entry, 2, result));
+ first_unused[NISENTRYLEN (entry, 2, result)] = '\0';
len = strlen (first_unused);
if (len == 0) /* If we don't have a uid, it's an invalid shadow entry */
return 0;
pw->pw_uid = strtoul (first_unused, NULL, 10);
- if (NISENTRYLEN (0, 3, result) >= room_left)
+ if (NISENTRYLEN (entry, 3, result) >= room_left)
goto no_more_room;
- strncpy (first_unused, NISENTRYVAL (0, 3, result),
- NISENTRYLEN (0, 3, result));
- first_unused[NISENTRYLEN (0, 3, result)] = '\0';
+ strncpy (first_unused, NISENTRYVAL (entry, 3, result),
+ NISENTRYLEN (entry, 3, result));
+ first_unused[NISENTRYLEN (entry, 3, result)] = '\0';
len = strlen (first_unused);
if (len == 0) /* If we don't have a gid, it's an invalid shadow entry */
return 0;
pw->pw_gid = strtoul (first_unused, NULL, 10);
- if (NISENTRYLEN(0, 4, result) >= room_left)
+ if (NISENTRYLEN(entry, 4, result) >= room_left)
goto no_more_room;
- strncpy (first_unused, NISENTRYVAL (0, 4, result),
- NISENTRYLEN (0, 4, result));
- first_unused[NISENTRYLEN (0, 4, result)] = '\0';
+ strncpy (first_unused, NISENTRYVAL (entry, 4, result),
+ NISENTRYLEN (entry, 4, result));
+ first_unused[NISENTRYLEN (entry, 4, result)] = '\0';
pw->pw_gecos = first_unused;
len = strlen (first_unused);
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
- if (NISENTRYLEN (0, 5, result) >= room_left)
+ if (NISENTRYLEN (entry, 5, result) >= room_left)
goto no_more_room;
- strncpy (first_unused, NISENTRYVAL (0, 5, result),
- NISENTRYLEN (0, 5, result));
- first_unused[NISENTRYLEN (0, 5, result)] = '\0';
+ strncpy (first_unused, NISENTRYVAL (entry, 5, result),
+ NISENTRYLEN (entry, 5, result));
+ first_unused[NISENTRYLEN (entry, 5, result)] = '\0';
pw->pw_dir = first_unused;
len = strlen (first_unused);
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
- if (NISENTRYLEN (0, 6, result) >= room_left)
+ if (NISENTRYLEN (entry, 6, result) >= room_left)
goto no_more_room;
- strncpy (first_unused, NISENTRYVAL (0, 6, result),
- NISENTRYLEN (0, 6, result));
- first_unused[NISENTRYLEN (0, 6, result)] = '\0';
+ strncpy (first_unused, NISENTRYVAL (entry, 6, result),
+ NISENTRYLEN (entry, 6, result));
+ first_unused[NISENTRYLEN (entry, 6, result)] = '\0';
pw->pw_shell = first_unused;
len = strlen (first_unused);
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
return 1;
}
#include "nss-nisplus.h"
#include "nisplus-parser.h"
+#include <libnsl.h>
+
__libc_lock_define_initialized (static, lock)
+/* Previous result of iteration. */
static nis_result *result;
+
+/* All results of batch table load. */
+static nis_result *cached_results;
+static size_t cached_results_iter;
+
nis_name pwd_tablename_val attribute_hidden;
size_t pwd_tablename_len attribute_hidden;
}
-enum nss_status
-_nss_nisplus_setpwent (int stayopen)
+static void
+internal_nisplus_endpwent (void)
{
- enum nss_status status = NSS_STATUS_SUCCESS;
-
- __libc_lock_lock (lock);
+ if (cached_results != NULL)
+ {
+ nis_freeresult (cached_results);
+ cached_results = NULL;
+ cached_results_iter = 0;
+ }
if (result != NULL)
{
nis_freeresult (result);
result = NULL;
}
+}
+
+
+static enum nss_status
+internal_nisplus_setpwent (int *errnop)
+{
+ enum nss_status status;
+
+ cached_results = nis_list (pwd_tablename_val, FOLLOW_PATH | FOLLOW_LINKS,
+ NULL, NULL);
+
+ if (cached_results == NULL)
+ {
+ *errnop = errno;
+ status = NSS_STATUS_TRYAGAIN;
+ }
+ else if (__builtin_expect ((status = niserr2nss (cached_results->status))
+ != NSS_STATUS_SUCCESS, 0))
+ {
+ nis_freeresult (cached_results);
+ cached_results = NULL;
+ }
+ else if (__builtin_expect (__type_of (NIS_RES_OBJECT (cached_results))
+ != NIS_ENTRY_OBJ
+ || strcmp (NIS_RES_OBJECT (cached_results)->EN_data.en_type,
+ "passwd_tbl") != 0
+ || NIS_RES_OBJECT (cached_results)->EN_data.en_cols.en_cols_len < 7,
+ 0))
+ {
+ nis_freeresult (cached_results);
+ cached_results = NULL;
+ status = NSS_STATUS_NOTFOUND;
+ }
+
+ return status;
+}
+
+
+enum nss_status
+_nss_nisplus_setpwent (int stayopen)
+{
+ enum nss_status status = NSS_STATUS_SUCCESS;
+
+ __libc_lock_lock (lock);
+
+ internal_nisplus_endpwent ();
if (pwd_tablename_val == NULL)
{
+ // XXX We need to be able to set errno. Pass in new parameter.
int err;
status = _nss_pwd_create_tablename (&err);
}
+ if (status == NSS_STATUS_SUCCESS
+ && (_nsl_default_nss () & NSS_FLAG_SETENT_BATCH_READ))
+ {
+ // XXX We need to be able to set errno. Pass in new parameter.
+ int err;
+ status = internal_nisplus_setpwent (&err);
+ }
+
__libc_lock_unlock (lock);
return status;
}
+
enum nss_status
_nss_nisplus_endpwent (void)
{
__libc_lock_lock (lock);
- if (result != NULL)
- {
- nis_freeresult (result);
- result = NULL;
- }
+ internal_nisplus_endpwent ();
__libc_lock_unlock (lock);
return NSS_STATUS_SUCCESS;
}
+
static enum nss_status
internal_nisplus_getpwent_r (struct passwd *pw, char *buffer, size_t buflen,
int *errnop)
{
- int parse_res;
+ int parse_res = -1;
+ nis_result *saved_res = NULL;
/* Get the next entry until we found a correct one. */
do
{
- nis_result *saved_res;
-
- if (result == NULL)
+ if (cached_results != NULL)
{
- saved_res = NULL;
- if (pwd_tablename_val == NULL)
- {
- enum nss_status status = _nss_pwd_create_tablename (errnop);
-
- if (status != NSS_STATUS_SUCCESS)
- return status;
- }
-
- result = nis_first_entry (pwd_tablename_val);
- if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
- return niserr2nss (result->status);
+ handle_batch_read:
+ /* See whether we reported the last problem. */
+ if (cached_results_iter >= NIS_RES_NUMOBJ (cached_results))
+ return NSS_STATUS_NOTFOUND;
+
+ parse_res = _nss_nisplus_parse_pwent (cached_results,
+ cached_results_iter, pw,
+ buffer, buflen, errnop);
}
else
{
- saved_res = result;
- result = nis_next_entry (pwd_tablename_val, &result->cookie);
- if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
+ if (result == NULL)
+ {
+ if (pwd_tablename_val == NULL)
+ {
+ enum nss_status status = _nss_pwd_create_tablename (errnop);
+
+ if (status != NSS_STATUS_SUCCESS)
+ return status;
+ }
+
+ /* Determine whether we should instead read all entries at
+ once. */
+ if (_nsl_default_nss () & NSS_FLAG_SETENT_BATCH_READ)
+ {
+ enum nss_status status = internal_nisplus_setpwent (errnop);
+
+ if (status == NSS_STATUS_SUCCESS && cached_results != NULL)
+ goto handle_batch_read;
+ }
+
+ saved_res = NULL;
+
+ result = nis_first_entry (pwd_tablename_val);
+ if (result == NULL)
+ {
+ *errnop = errno;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
+ return niserr2nss (result->status);
+ }
+ else
{
- nis_freeresult (saved_res);
- return niserr2nss (result->status);
+ saved_res = result;
+ result = nis_next_entry (pwd_tablename_val, &result->cookie);
+ if (result == NULL)
+ {
+ *errnop = errno;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
+ {
+ nis_freeresult (saved_res);
+ return niserr2nss (result->status);
+ }
}
+
+ parse_res = _nss_nisplus_parse_pwent_chk (result, pw, buffer,
+ buflen, errnop);
}
- parse_res = _nss_nisplus_parse_pwent (result, pw, buffer,
- buflen, errnop);
if (__builtin_expect (parse_res == -1, 0))
{
- nis_freeresult (result);
- result = saved_res;
+ if (cached_results == NULL)
+ {
+ nis_freeresult (result);
+ result = saved_res;
+ }
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
- if (saved_res)
- nis_freeresult (saved_res);
+ if (cached_results != NULL)
+ ++cached_results_iter;
+ else
+ if (saved_res)
+ {
+ nis_freeresult (saved_res);
+ saved_res = NULL;
+ }
}
while (!parse_res);
return status;
}
- parse_res = _nss_nisplus_parse_pwent (result, pw, buffer, buflen, errnop);
+ parse_res = _nss_nisplus_parse_pwent_chk (result, pw, buffer, buflen,
+ errnop);
nis_freeresult (result);
return status;
}
- parse_res = _nss_nisplus_parse_pwent (result, pw, buffer, buflen, errnop);
+ parse_res = _nss_nisplus_parse_pwent_chk (result, pw, buffer, buflen,
+ errnop);
nis_freeresult (result);
projects / platform / upstream / linaro-glibc.git / commitdiff