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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 /nss/Makefile
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 'nss/Makefile')
-rw-r--r--nss/Makefile3
1 files changed, 2 insertions, 1 deletions
diff --git a/nss/Makefile b/nss/Makefile
index d9f6d41181..1e298c28f1 100644
--- a/nss/Makefile
+++ b/nss/Makefile
@@ -27,7 +27,8 @@ headers := nss.h
# This is the trivial part which goes into libc itself.
routines = nsswitch getnssent getnssent_r digits_dots \
valid_field valid_list_field rewrite_field \
- $(addsuffix -lookup,$(databases))
+ $(addsuffix -lookup,$(databases)) \
+ compat-lookup
# These are the databases that go through nss dispatch.
# Caution: if you add a database here, you must add its real name