From c88ffc239e8d8820f6d1d4e185984e6093a1e4d7 Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Mon, 14 Aug 2017 17:12:05 +0200 Subject: NSS: Replace exported NSS lookup functions with stubs [BZ #21962] Commit 384ca551743318bd9c9e24a496d6397f2e3f2a49 from 2007 added this to nss/XXX-lookup.c: +#ifndef NO_COMPAT +int +internal_function attribute_compat_text_section +DB_COMPAT_FCT (service_user **ni, const char *fct_name, void **fctp) +{ + return DB_LOOKUP_FCT (ni, fct_name, NULL, fctp); +} +#endif That is, it adds a pseudo-compat function with an internal_function attribute. The function it was supposed to replace did not have the attribute: extern int DB_LOOKUP_FCT (service_user **ni, const char *fct_name, - void **fctp) internal_function; + const char *fct2_name, void **fctp) + internal_function; This changed the calling convention on i386 for the following functions in the public ABI: __nss_passwd_lookup __nss_group_lookup __nss_hosts_lookup This commit replaces the functions with always-failing stubs, with true compat symbols. Due to a happy accident, the calling convention of the stub is identical for the internal_function and non-internal_function case on i386. In addition, this commit auto-generates the __nss_*_lookup2 function declarations as part of . --- grp/initgroups.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'grp') diff --git a/grp/initgroups.c b/grp/initgroups.c index 7a40813d5e..0d5b841796 100644 --- a/grp/initgroups.c +++ b/grp/initgroups.c @@ -36,11 +36,6 @@ typedef enum nss_status (*initgroups_dyn_function) (const char *, gid_t, long int *, long int *, gid_t **, long int, int *); -/* The lookup function for the first entry of this service. */ -extern int __nss_group_lookup (service_user **nip, const char *name, - void **fctp); -extern void *__nss_lookup_function (service_user *ni, const char *fct_name); - extern service_user *__nss_group_database attribute_hidden; service_user *__nss_initgroups_database; static bool use_initgroups_entry; -- cgit v1.2.3-65-gdbad