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authorFlorian Weimer <fweimer@redhat.com>2017-08-14 17:12:05 +0200
committerFlorian Weimer <fweimer@redhat.com>2017-08-14 18:13:42 +0200
commitc88ffc239e8d8820f6d1d4e185984e6093a1e4d7 (patch)
tree9702ec03e78de2550e98d6e5a75b8f7b218bcd7c /sunrpc/netname.c
parent2a124c616384f140a21ee675b3e6799f8e0e7592 (diff)
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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 <nsswitch.h>.
Diffstat (limited to 'sunrpc/netname.c')
-rw-r--r--sunrpc/netname.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/sunrpc/netname.c b/sunrpc/netname.c
index 9aee3e4..0dacd1c 100644
--- a/sunrpc/netname.c
+++ b/sunrpc/netname.c
@@ -140,9 +140,6 @@ libc_hidden_nolink_sunrpc (getnetname, GLIBC_2_1)
/* Type of the lookup function for netname2user. */
typedef int (*netname2user_function) (const char netname[MAXNETNAMELEN + 1],
uid_t *, gid_t *, int *, gid_t *);
-/* The lookup function for the first entry of this service. */
-extern int __nss_publickey_lookup (service_user ** nip, const char *name,
- void **fctp) internal_function;
int
netname2user (const char netname[MAXNETNAMELEN + 1], uid_t * uidp, gid_t * gidp,
@@ -161,7 +158,7 @@ netname2user (const char netname[MAXNETNAMELEN + 1], uid_t * uidp, gid_t * gidp,
if (startp == NULL)
{
- no_more = __nss_publickey_lookup (&nip, "netname2user", &fct.ptr);
+ no_more = __nss_publickey_lookup2 (&nip, "netname2user", NULL, &fct.ptr);
if (no_more)
startp = (service_user *) - 1;
else