From c3ec475c5dd16499aa040908e11d382c3ded9692 Mon Sep 17 00:00:00 2001 From: Siddhesh Poyarekar Date: Mon, 26 May 2014 11:40:08 +0530 Subject: Use NSS_STATUS_TRYAGAIN to indicate insufficient buffer (BZ #16878) The netgroups nss modules in the glibc tree use NSS_STATUS_UNAVAIL (with errno as ERANGE) when the supplied buffer does not have sufficient space for the result. This is wrong, because the canonical way to indicate insufficient buffer is to set the errno to ERANGE and the status to NSS_STATUS_TRYAGAIN, as is used by all other modules. This fixes nscd behaviour when the nss_ldap module returns NSS_STATUS_TRYAGAIN to indicate that a netgroup entry is too long to fit into the supplied buffer. --- nscd/netgroupcache.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'nscd') diff --git a/nscd/netgroupcache.c b/nscd/netgroupcache.c index b3d40e9174..edab1744f4 100644 --- a/nscd/netgroupcache.c +++ b/nscd/netgroupcache.c @@ -197,11 +197,6 @@ addgetnetgrentX (struct database_dyn *db, int fd, request_header *req, int e; status = getfct.f (&data, buffer + buffilled, buflen - buffilled - req->key_len, &e); - if (status == NSS_STATUS_RETURN - || status == NSS_STATUS_NOTFOUND) - /* This was either the last one for this group or the - group was empty. Look at next group if available. */ - break; if (status == NSS_STATUS_SUCCESS) { if (data.type == triple_val) @@ -320,11 +315,18 @@ addgetnetgrentX (struct database_dyn *db, int fd, request_header *req, } } } - else if (status == NSS_STATUS_UNAVAIL && e == ERANGE) + else if (status == NSS_STATUS_TRYAGAIN && e == ERANGE) { buflen *= 2; buffer = xrealloc (buffer, buflen); } + else if (status == NSS_STATUS_RETURN + || status == NSS_STATUS_NOTFOUND + || status == NSS_STATUS_UNAVAIL) + /* This was either the last one for this group or the + group was empty or the NSS module had an internal + failure. Look at next group if available. */ + break; } enum nss_status (*endfct) (struct __netgrent *); -- cgit 1.4.1