From a17fa6100dd400cd0c64aab1803c2047c95bfd5b Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sat, 20 May 2006 19:22:30 +0000 Subject: * nis/nis_call.c (__prepare_niscall): New function. Split out from __do_niscall. * nis/nis_table.c (__create_ib_request): Renamed from create_ib_request and exported. (__follow_path): New function. Split out from nis_list. * nis/nis_xdr.h: Add libnsl_hidden_proto for _xdr_ib_request and _xdr_nis_result. * nis/nis_xdr.c: Add libnsl_hidden_def for _xdr_ib_request and _xdr_nis_result. * nis/libnsl.h: Declare __prepare_niscall, __create_ib_request, and __follow_path. * nis/Versions: Export __prepare_niscall, __create_ib_request, __follow_path, __do_niscall3, _xdr_ib_request, and _xdr_nis_result from libnsl for version GLIBC_PRIVATE. * nis/nisplus-parser.h: Remove _nss_nisplus_parse_pwent_chk. Remove entry parameter from _nss_nisplus_parse_pwent and _nss_nisplus_parse_grent. * nis/nss_nisplus/nisplus-parser.c: Likewise. * nis/nss_nisplus/nisplus-pwd.c: Remove support for SETENT_BATCH_READ again. Rewrite getpwent handling to not use nis_first_entry and nis_next_entry. Roll out own niscall handling. * nis/nss_nisplus/nisplus-grp.c: Likewise. * sunrpc/xdr_rec.c: Fix typo in comment. 2006-05-18 David Woodhouse --- nis/nss_nisplus/nisplus-grp.c | 202 ++++++++++++++++++++++-------- nis/nss_nisplus/nisplus-parser.c | 108 ++++++++-------- nis/nss_nisplus/nisplus-pwd.c | 258 +++++++++++++++++++-------------------- 3 files changed, 325 insertions(+), 243 deletions(-) (limited to 'nis/nss_nisplus') diff --git a/nis/nss_nisplus/nisplus-grp.c b/nis/nss_nisplus/nisplus-grp.c index 624b20610a..c1adc98aee 100644 --- a/nis/nss_nisplus/nisplus-grp.c +++ b/nis/nss_nisplus/nisplus-grp.c @@ -29,12 +29,23 @@ #include "nss-nisplus.h" #include "nisplus-parser.h" +#include +#include +#include __libc_lock_define_initialized (static, lock); -static nis_result *result; -static unsigned long next_entry; +/* 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_name tablename_val; static size_t tablename_len; @@ -66,43 +77,57 @@ _nss_create_tablename (int *errnop) return NSS_STATUS_SUCCESS; } -static enum nss_status -internal_setgrent (void) + +static void +internal_endgrent (void) { - enum nss_status status; + __nisbind_destroy (&bptr); + memset (&bptr, '\0', sizeof (bptr)); - if (result != NULL) - { - nis_freeresult (result); - result = NULL; - } - next_entry = 0; + 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) +{ + enum nss_status status = NSS_STATUS_SUCCESS; if (tablename_val == NULL) - { - int err; - if (_nss_create_tablename (&err) != NSS_STATUS_SUCCESS) - return NSS_STATUS_UNAVAIL; - } + status = _nss_create_tablename (errnop); - result = nis_list (tablename_val, FOLLOW_LINKS | FOLLOW_PATH, NULL, NULL); - if (result == NULL) + if (status == NSS_STATUS_SUCCESS) { - status = NSS_STATUS_TRYAGAIN; - __set_errno (ENOMEM); - } - else - { - status = niserr2nss (result->status); - if (status != NSS_STATUS_SUCCESS) + ibreq = __create_ib_request (tablename_val, 0); + if (ibreq == NULL) { - nis_freeresult (result); - result = NULL; + *errnop = errno; + return NSS_STATUS_TRYAGAIN; + } + + nis_error retcode = __prepare_niscall (tablename_val, &dir, &bptr, 0); + if (retcode != NIS_SUCCESS) + { + nis_free_request (ibreq); + ibreq = NULL; + status = niserr2nss (retcode); } } + return status; } + enum nss_status _nss_nisplus_setgrent (int stayopen) { @@ -110,60 +135,133 @@ _nss_nisplus_setgrent (int stayopen) __libc_lock_lock (lock); - status = internal_setgrent (); + internal_endgrent (); + + // XXX We need to be able to set errno. Pass in new parameter. + int err; + status = internal_setgrent (&err); __libc_lock_unlock (lock); return status; } + enum nss_status _nss_nisplus_endgrent (void) { __libc_lock_lock (lock); - if (result != NULL) - { - nis_freeresult (result); - result = NULL; - } + internal_endgrent (); __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; - - if (result == NULL) - { - enum nss_status status; - - status = internal_setgrent (); - if (result == NULL || status != NSS_STATUS_SUCCESS) - return status; - } + int parse_res = -1; + enum nss_status retval = NSS_STATUS_SUCCESS; /* Get the next entry until we found a correct one. */ do { - if (next_entry >= result->objects.objects_len) - return NSS_STATUS_NOTFOUND; + nis_error status; + nis_result result; + memset (&result, '\0', sizeof (result)); - parse_res = _nss_nisplus_parse_grent (result, next_entry, gr, + 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); + + 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)); + + parse_res = _nss_nisplus_parse_grent (&result, gr, buffer, buflen, errnop); - if (parse_res == -1) - return NSS_STATUS_TRYAGAIN; + if (__builtin_expect (parse_res == -1, 0)) + { + *errnop = ERANGE; + retval = NSS_STATUS_TRYAGAIN; + goto freeres; + } - ++next_entry; + 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)); } while (!parse_res); - return NSS_STATUS_SUCCESS; + return retval; } enum nss_status @@ -227,7 +325,7 @@ _nss_nisplus_getgrnam_r (const char *name, struct group *gr, return status; } - parse_res = _nss_nisplus_parse_grent (result, 0, gr, buffer, buflen, errnop); + parse_res = _nss_nisplus_parse_grent (result, gr, buffer, buflen, errnop); nis_freeresult (result); if (__builtin_expect (parse_res < 1, 0)) { @@ -288,7 +386,7 @@ _nss_nisplus_getgrgid_r (const gid_t gid, struct group *gr, return status; } - parse_res = _nss_nisplus_parse_grent (result, 0, gr, buffer, buflen, errnop); + parse_res = _nss_nisplus_parse_grent (result, gr, buffer, buflen, errnop); nis_freeresult (result); if (__builtin_expect (parse_res < 1, 0)) diff --git a/nis/nss_nisplus/nisplus-parser.c b/nis/nss_nisplus/nisplus-parser.c index 5ed07d86d9..1e1a343d52 100644 --- a/nis/nss_nisplus/nisplus-parser.c +++ b/nis/nss_nisplus/nisplus-parser.c @@ -31,10 +31,16 @@ #define NISENTRYLEN(idx, col, res) \ (NIS_RES_OBJECT (res)[idx].EN_data.en_cols.en_cols_val[col].ec_value.ec_value_len) +#define NISOBJVAL(col, obj) \ + ((obj)->EN_data.en_cols.en_cols_val[col].ec_value.ec_value_val) + +#define NISOBJLEN(col, obj) \ + ((obj)->EN_data.en_cols.en_cols_val[col].ec_value.ec_value_len) + int -_nss_nisplus_parse_pwent_chk (nis_result *result, struct passwd *pw, - char *buffer, size_t buflen, int *errnop) +_nss_nisplus_parse_pwent (nis_result *result, struct passwd *pw, + char *buffer, size_t buflen, int *errnop) { if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) || NIS_RES_NUMOBJ (result) != 1 @@ -43,19 +49,12 @@ _nss_nisplus_parse_pwent_chk (nis_result *result, struct passwd *pw, || NIS_RES_OBJECT (result)->EN_data.en_cols.en_cols_len < 7) return 0; - 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) -{ + nis_object *obj = NIS_RES_OBJECT (result); char *first_unused = buffer; size_t room_left = buflen; size_t len; - if (NISENTRYLEN (entry, 0, result) >= room_left) + if (NISOBJLEN (0, obj) >= room_left) { /* The line is too long for our buffer. */ no_more_room: @@ -63,9 +62,8 @@ _nss_nisplus_parse_pwent (nis_result *result, size_t entry, struct passwd *pw, return -1; } - strncpy (first_unused, NISENTRYVAL (entry, 0, result), - NISENTRYLEN (entry, 0, result)); - first_unused[NISENTRYLEN (entry, 0, result)] = '\0'; + strncpy (first_unused, NISOBJVAL (0, obj), NISOBJLEN (0, obj)); + first_unused[NISOBJLEN (0, obj)] = '\0'; len = strlen (first_unused); if (len == 0) /* No name ? Should never happen, database is corrupt */ return 0; @@ -73,19 +71,18 @@ _nss_nisplus_parse_pwent (nis_result *result, size_t entry, struct passwd *pw, room_left -= len + 1; first_unused += len + 1; - if (NISENTRYLEN (entry, 1, result) >= room_left) + if (NISOBJLEN (1, obj) >= room_left) goto no_more_room; - strncpy (first_unused, NISENTRYVAL (entry, 1, result), - NISENTRYLEN (entry, 1, result)); - first_unused[NISENTRYLEN (entry, 1, result)] = '\0'; + strncpy (first_unused, NISOBJVAL (1, obj), NISOBJLEN (1, obj)); + first_unused[NISOBJLEN (1, obj)] = '\0'; pw->pw_passwd = first_unused; len = strlen (first_unused); room_left -= len + 1; first_unused += len + 1; - char *numstr = NISENTRYVAL (entry, 2, result); - len = NISENTRYLEN (entry, 2, result); + char *numstr = NISOBJVAL (2, obj); + len = NISOBJLEN (2, obj); if (len == 0 && numstr[len - 1] != '\0') { if (len >= room_left) @@ -100,8 +97,8 @@ _nss_nisplus_parse_pwent (nis_result *result, size_t entry, struct passwd *pw, return 0; pw->pw_uid = strtoul (numstr, NULL, 10); - numstr = NISENTRYVAL (entry, 3, result); - len = NISENTRYLEN (entry, 3, result); + numstr = NISOBJVAL (3, obj); + len = NISOBJLEN (3, obj); if (len == 0 && numstr[len - 1] != '\0') { if (len >= room_left) @@ -116,34 +113,31 @@ _nss_nisplus_parse_pwent (nis_result *result, size_t entry, struct passwd *pw, return 0; pw->pw_gid = strtoul (numstr, NULL, 10); - if (NISENTRYLEN(entry, 4, result) >= room_left) + if (NISOBJLEN(4, obj) >= room_left) goto no_more_room; - strncpy (first_unused, NISENTRYVAL (entry, 4, result), - NISENTRYLEN (entry, 4, result)); - first_unused[NISENTRYLEN (entry, 4, result)] = '\0'; + strncpy (first_unused, NISOBJVAL (4, obj), NISOBJLEN (4, obj)); + first_unused[NISOBJLEN (4, obj)] = '\0'; pw->pw_gecos = first_unused; len = strlen (first_unused); room_left -= len + 1; first_unused += len + 1; - if (NISENTRYLEN (entry, 5, result) >= room_left) + if (NISOBJLEN (5, obj) >= room_left) goto no_more_room; - strncpy (first_unused, NISENTRYVAL (entry, 5, result), - NISENTRYLEN (entry, 5, result)); - first_unused[NISENTRYLEN (entry, 5, result)] = '\0'; + strncpy (first_unused, NISOBJVAL (5, obj), NISOBJLEN (5, obj)); + first_unused[NISOBJLEN (5, obj)] = '\0'; pw->pw_dir = first_unused; len = strlen (first_unused); room_left -= len + 1; first_unused += len + 1; - if (NISENTRYLEN (entry, 6, result) >= room_left) + if (NISOBJLEN (6, obj) >= room_left) goto no_more_room; - strncpy (first_unused, NISENTRYVAL (entry, 6, result), - NISENTRYLEN (entry, 6, result)); - first_unused[NISENTRYLEN (entry, 6, result)] = '\0'; + strncpy (first_unused, NISOBJVAL (6, obj), NISOBJLEN (6, obj)); + first_unused[NISOBJLEN (6, obj)] = '\0'; pw->pw_shell = first_unused; len = strlen (first_unused); room_left -= len + 1; @@ -154,26 +148,23 @@ _nss_nisplus_parse_pwent (nis_result *result, size_t entry, struct passwd *pw, int -_nss_nisplus_parse_grent (nis_result *result, u_long entry, struct group *gr, +_nss_nisplus_parse_grent (nis_result *result, struct group *gr, char *buffer, size_t buflen, int *errnop) { + if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) + || __type_of(NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ + || strcmp (NIS_RES_OBJECT (result)[0].EN_data.en_type, "group_tbl") != 0 + || NIS_RES_OBJECT (result)[0].EN_data.en_cols.en_cols_len < 4) + return 0; + + nis_object *obj = NIS_RES_OBJECT (result); char *first_unused = buffer; size_t room_left = buflen; char *line; int count; size_t len; - if (result == NULL) - return 0; - - if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) - || __type_of(NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ - || strcmp (NIS_RES_OBJECT (result)[entry].EN_data.en_type, - "group_tbl") != 0 - || NIS_RES_OBJECT (result)[entry].EN_data.en_cols.en_cols_len < 4) - return 0; - - if (NISENTRYLEN (entry, 0, result) >= room_left) + if (NISOBJLEN (0, obj) >= room_left) { /* The line is too long for our buffer. */ no_more_room: @@ -181,9 +172,8 @@ _nss_nisplus_parse_grent (nis_result *result, u_long entry, struct group *gr, return -1; } - strncpy (first_unused, NISENTRYVAL (entry, 0, result), - NISENTRYLEN (entry, 0, result)); - first_unused[NISENTRYLEN (entry, 0, result)] = '\0'; + strncpy (first_unused, NISOBJVAL (0, obj), NISOBJLEN (0, obj)); + first_unused[NISOBJLEN (0, obj)] = '\0'; len = strlen (first_unused); if (len == 0) /* group table is corrupt */ return 0; @@ -191,20 +181,19 @@ _nss_nisplus_parse_grent (nis_result *result, u_long entry, struct group *gr, room_left -= len + 1; first_unused += len + 1; - if (NISENTRYLEN (entry, 1, result) >= room_left) + if (NISOBJLEN (1, obj) >= room_left) goto no_more_room; - strncpy (first_unused, NISENTRYVAL (entry, 1, result), - NISENTRYLEN (entry, 1, result)); - first_unused[NISENTRYLEN (entry, 1, result)] = '\0'; + strncpy (first_unused, NISOBJVAL (1, obj), NISOBJLEN (1, obj)); + first_unused[NISOBJLEN (1, obj)] = '\0'; gr->gr_passwd = first_unused; len = strlen (first_unused); room_left -= len + 1; first_unused += len + 1; - char *numstr = NISENTRYVAL (entry, 2, result); - len = NISENTRYLEN (entry, 2, result); - if (len == 0 && numstr[len - 1] != '\0') + char *numstr = NISOBJVAL (2, obj); + len = NISOBJLEN (2, obj); + if (len == 0 || numstr[len - 1] != '\0') { if (len >= room_left) goto no_more_room; @@ -218,12 +207,11 @@ _nss_nisplus_parse_grent (nis_result *result, u_long entry, struct group *gr, return 0; gr->gr_gid = strtoul (numstr, NULL, 10); - if (NISENTRYLEN (entry, 3, result) >= room_left) + if (NISOBJLEN (3, obj) >= room_left) goto no_more_room; - strncpy (first_unused, NISENTRYVAL (entry, 3, result), - NISENTRYLEN (entry, 3, result)); - first_unused[NISENTRYLEN (entry, 3, result)] = '\0'; + strncpy (first_unused, NISOBJVAL (3, obj), NISOBJLEN (3, obj)); + first_unused[NISOBJLEN (3, obj)] = '\0'; line = first_unused; len = strlen (line); room_left -= len + 1; diff --git a/nis/nss_nisplus/nisplus-pwd.c b/nis/nss_nisplus/nisplus-pwd.c index 7957e6a27d..93e37dddab 100644 --- a/nis/nss_nisplus/nisplus-pwd.c +++ b/nis/nss_nisplus/nisplus-pwd.c @@ -29,16 +29,21 @@ #include "nss-nisplus.h" #include "nisplus-parser.h" #include +#include +#include __libc_lock_define_initialized (static, lock) -/* Previous result of iteration. */ -static nis_result *result; +/* Connection information. */ +static ib_request *ibreq; +static directory_obj *dir; +static dir_binding bptr; +static char *tablepath; +static char *tableptr; +/* Cursor. */ +static netobj cursor; -/* 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; @@ -80,50 +85,48 @@ _nss_pwd_create_tablename (int *errnop) static void internal_nisplus_endpwent (void) { - if (cached_results != NULL) - { - nis_freeresult (cached_results); - cached_results = NULL; - cached_results_iter = 0; - } + __nisbind_destroy (&bptr); + memset (&bptr, '\0', sizeof (bptr)); - if (result != NULL) - { - nis_freeresult (result); - result = NULL; - } + 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_nisplus_setpwent (int *errnop) { - enum nss_status status; + enum nss_status status = NSS_STATUS_SUCCESS; - cached_results = nis_list (pwd_tablename_val, FOLLOW_PATH | FOLLOW_LINKS, - NULL, NULL); + if (pwd_tablename_val == NULL) + status = _nss_pwd_create_tablename (errnop); - 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)) + if (status == NSS_STATUS_SUCCESS) { - nis_freeresult (cached_results); - cached_results = NULL; - status = NSS_STATUS_NOTFOUND; + ibreq = __create_ib_request (pwd_tablename_val, 0); + if (ibreq == NULL) + { + *errnop = errno; + return NSS_STATUS_TRYAGAIN; + } + + nis_error retcode = __prepare_niscall (pwd_tablename_val, &dir, + &bptr, 0); + if (retcode != NIS_SUCCESS) + { + nis_free_request (ibreq); + ibreq = NULL; + status = niserr2nss (retcode); + } } return status; @@ -133,26 +136,15 @@ internal_nisplus_setpwent (int *errnop) enum nss_status _nss_nisplus_setpwent (int stayopen) { - enum nss_status status = NSS_STATUS_SUCCESS; + enum nss_status status; __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); - } + // XXX We need to be able to set errno. Pass in new parameter. + int err; + status = internal_nisplus_setpwent (&err); __libc_lock_unlock (lock); @@ -178,98 +170,104 @@ internal_nisplus_getpwent_r (struct passwd *pw, char *buffer, size_t buflen, int *errnop) { int parse_res = -1; - nis_result *saved_res = NULL; + enum nss_status retval = NSS_STATUS_SUCCESS; /* Get the next entry until we found a correct one. */ do { - if (cached_results != NULL) + nis_error status; + nis_result result; + memset (&result, '\0', sizeof (result)); + + if (cursor.n_bytes == NULL) { - 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); + if (ibreq == NULL) + { + retval = internal_nisplus_setpwent (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 { - 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 - { - 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); - } - } + 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; + } - parse_res = _nss_nisplus_parse_pwent_chk (result, pw, buffer, - buflen, errnop); + if (status != NIS_SUCCESS) + return niserr2nss (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)); + + parse_res = _nss_nisplus_parse_pwent (&result, pw, buffer, + buflen, errnop); if (__builtin_expect (parse_res == -1, 0)) { - if (cached_results == NULL) - { - nis_freeresult (result); - result = saved_res; - } *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; + retval = NSS_STATUS_TRYAGAIN; + goto freeres; } - if (cached_results != NULL) - ++cached_results_iter; - else - if (saved_res) - { - nis_freeresult (saved_res); - saved_res = NULL; - } + 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)); } while (!parse_res); - return NSS_STATUS_SUCCESS; + return retval; } enum nss_status @@ -331,8 +329,7 @@ _nss_nisplus_getpwnam_r (const char *name, struct passwd *pw, return status; } - parse_res = _nss_nisplus_parse_pwent_chk (result, pw, buffer, buflen, - errnop); + parse_res = _nss_nisplus_parse_pwent (result, pw, buffer, buflen, errnop); nis_freeresult (result); @@ -391,8 +388,7 @@ _nss_nisplus_getpwuid_r (const uid_t uid, struct passwd *pw, return status; } - parse_res = _nss_nisplus_parse_pwent_chk (result, pw, buffer, buflen, - errnop); + parse_res = _nss_nisplus_parse_pwent (result, pw, buffer, buflen, errnop); nis_freeresult (result); -- cgit v1.2.3