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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-08-21 05:31:02 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-08-21 05:31:19 -0700 |
| commit | 1dbbb1ec7af9026bbdc6dd265525de0c3958406c (patch) | |
| tree | 21aa5ee4232f9e0c8a0f45f7b8476711fce828e7 /nss/nsswitch.h | |
| parent | 2585d7b839559e665d5723734862fbe62264b25d (diff) | |
| download | glibc-1dbbb1ec7af9026bbdc6dd265525de0c3958406c.tar.gz glibc-1dbbb1ec7af9026bbdc6dd265525de0c3958406c.tar.xz glibc-1dbbb1ec7af9026bbdc6dd265525de0c3958406c.zip | |
Mark internal nss symbols with attribute_hidden [BZ #18822]
Mark internal nss symbols with attribute_hidden to allow direct access within libc.so and libc.a without using GOT nor PLT. Tested on x86-64 with and without --disable-nscd. [BZ #18822] * grp/initgroups.c (__nss_group_database): Removed. (__nss_initgroups_database): Likewise. * nscd/gai.c (__nss_hosts_database): Likewise. * nss/XXX-lookup.c (DATABASE_NAME_SYMBOL): Likewise. * posix/tst-rfc3484-2.c (__nss_hosts_database): Likewise. * posix/tst-rfc3484-3.c (__nss_hosts_database): Likewise. * posix/tst-rfc3484.c (__nss_hosts_database): Likewise. * sysdeps/posix/getaddrinfo.c (__nss_hosts_database): Likewise. * nss/getXXent.c (INTERNAL (REENTRANT_GETNAME)): Add attribute_hidden. * nss/nsswitch.c (__nss_database_custom): Define only if USE_NSCD is defined. (__nss_configure_lookup): Use __nss_database_custom only if USE_NSCD is defined. * nss/nsswitch.h (__nss_database_custom): Declare only if USE_NSCD is defined. Add attribute_hidden. (__nss_setent): Add attribute_hidden. (__nss_endent): Likewise. (__nss_getent_r): Likewise. (__nss_getent): Likewise. (DEFINE_DATABASE): Declare __nss_##arg##_database.
Diffstat (limited to 'nss/nsswitch.h')
| -rw-r--r-- | nss/nsswitch.h | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/nss/nsswitch.h b/nss/nsswitch.h index 2b86d63ddb..ab0a512d40 100644 --- a/nss/nsswitch.h +++ b/nss/nsswitch.h @@ -96,17 +96,19 @@ typedef struct name_database } name_database; +#ifdef USE_NSCD /* Indices into DATABASES in nsswitch.c and __NSS_DATABASE_CUSTOM. */ enum { -#define DEFINE_DATABASE(arg) NSS_DBSIDX_##arg, -#include "databases.def" -#undef DEFINE_DATABASE +# define DEFINE_DATABASE(arg) NSS_DBSIDX_##arg, +# include "databases.def" +# undef DEFINE_DATABASE NSS_DBSIDX_max }; /* Flags whether custom rules for database is set. */ -extern bool __nss_database_custom[NSS_DBSIDX_max]; +extern bool __nss_database_custom[NSS_DBSIDX_max] attribute_hidden; +#endif /* Warning for NSS functions, which don't require dlopen if glibc was built with --enable-static-nss. */ @@ -180,11 +182,13 @@ extern void __nss_setent (const char *func_name, db_lookup_function lookup_fct, service_user **nip, service_user **startp, service_user **last_nip, int stayon, - int *stayon_tmp, int res); + int *stayon_tmp, int res) + attribute_hidden; extern void __nss_endent (const char *func_name, db_lookup_function lookup_fct, service_user **nip, service_user **startp, - service_user **last_nip, int res); + service_user **last_nip, int res) + attribute_hidden; extern int __nss_getent_r (const char *getent_func_name, const char *setent_func_name, db_lookup_function lookup_fct, @@ -192,10 +196,12 @@ extern int __nss_getent_r (const char *getent_func_name, service_user **last_nip, int *stayon_tmp, int res, void *resbuf, char *buffer, size_t buflen, - void **result, int *h_errnop); + void **result, int *h_errnop) + attribute_hidden; extern void *__nss_getent (getent_r_function func, void **resbuf, char **buffer, size_t buflen, - size_t *buffer_size, int *h_errnop); + size_t *buffer_size, int *h_errnop) + attribute_hidden; struct resolv_context; struct hostent; extern int __nss_hostname_digits_dots_context (struct resolv_context *, @@ -221,6 +227,7 @@ libc_hidden_proto (__nss_hostname_digits_dots) /* Prototypes for __nss_*_lookup2 functions. */ #define DEFINE_DATABASE(arg) \ + service_user *__nss_##arg##_database attribute_hidden; \ int __nss_##arg##_lookup2 (service_user **, const char *, \ const char *, void **); \ libc_hidden_proto (__nss_##arg##_lookup2) |