Mark internal grp/pwd/shadow functions with attribute_hidden [BZ #18822]

Mark internal grp/pwd/shadow functions with attribute_hidden to allow
direct access within libc.so and libc.a without using GOT nor PLT.

	[BZ #18822]
	* include/grp.h (__fgetgrent_r): Add attribute_hidden.
	(__getgrgid_r): Likewise.
	(__getgrnam_r): Likewise.
	* include/pwd.h (__getpwuid_r): Likewise.
	(__getpwnam_r): Likewise.
	(__fgetpwent_r): Likewise.
	* include/shadow.h (__getspnam_r): Likewise.
	(__sgetspent_r): Likewise.
	(__fgetspent_r): Likewise.

diff --git a/ChangeLog b/ChangeLog
index 1c2b7e9..f626ba4 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,19 @@
 2017-10-01  H.J. Lu  <hongjiu.lu@intel.com>
 
        [BZ #18822]
+       * include/grp.h (__fgetgrent_r): Add attribute_hidden.
+       (__getgrgid_r): Likewise.
+       (__getgrnam_r): Likewise.
+       * include/pwd.h (__getpwuid_r): Likewise.
+       (__getpwnam_r): Likewise.
+       (__fgetpwent_r): Likewise.
+       * include/shadow.h (__getspnam_r): Likewise.
+       (__sgetspent_r): Likewise.
+       (__fgetspent_r): Likewise.
+
+2017-10-01  H.J. Lu  <hongjiu.lu@intel.com>
+
+       [BZ #18822]
        * include/unistd.h (__access): Add attribute_hidden.
        (__lseek64): Likewise.
        (__libc_pread64): Likewise.

diff --git a/include/grp.h b/include/grp.h
index 0fb5c9a..871701a 100644 (file)
--- a/include/grp.h
+++ b/include/grp.h
@@ -12,12 +12,12 @@ extern int __old_getgrent_r (struct group *__resultbuf, char *buffer,
                             size_t __buflen, struct group **__result);
 extern int __fgetgrent_r (FILE * __stream, struct group *__resultbuf,
                          char *buffer, size_t __buflen,
-                         struct group **__result);
+                         struct group **__result) attribute_hidden;
 
 /* Search for an entry with a matching group ID.  */
 extern int __getgrgid_r (__gid_t __gid, struct group *__resultbuf,
                         char *__buffer, size_t __buflen,
-                        struct group **__result);
+                        struct group **__result) attribute_hidden;
 extern int __old_getgrgid_r (__gid_t __gid, struct group *__resultbuf,
                             char *__buffer, size_t __buflen,
                             struct group **__result);
@@ -25,7 +25,7 @@ extern int __old_getgrgid_r (__gid_t __gid, struct group *__resultbuf,
 /* Search for an entry with a matching group name.  */
 extern int __getgrnam_r (const char *__name, struct group *__resultbuf,
                         char *__buffer, size_t __buflen,
-                        struct group **__result);
+                        struct group **__result) attribute_hidden;
 extern int __old_getgrnam_r (const char *__name, struct group *__resultbuf,
                             char *__buffer, size_t __buflen,
                             struct group **__result);

diff --git a/include/pwd.h b/include/pwd.h
index 3b0f725..fc99506 100644 (file)
--- a/include/pwd.h
+++ b/include/pwd.h
@@ -10,19 +10,19 @@ extern int __old_getpwent_r (struct passwd *__resultbuf, char *__buffer,
                             size_t __buflen, struct passwd **__result);
 extern int __getpwuid_r (__uid_t __uid, struct passwd *__resultbuf,
                         char *__buffer, size_t __buflen,
-                        struct passwd **__result);
+                        struct passwd **__result) attribute_hidden;
 extern int __old_getpwuid_r (__uid_t __uid, struct passwd *__resultbuf,
                             char *__buffer, size_t __buflen,
                             struct passwd **__result);
 extern int __getpwnam_r (const char *__name, struct passwd *__resultbuf,
                         char *__buffer, size_t __buflen,
-                        struct passwd **__result);
+                        struct passwd **__result) attribute_hidden;
 extern int __old_getpwnam_r (const char *__name, struct passwd *__resultbuf,
                             char *__buffer, size_t __buflen,
                             struct passwd **__result);
 extern int __fgetpwent_r (FILE * __stream, struct passwd *__resultbuf,
                          char *__buffer, size_t __buflen,
-                         struct passwd **__result);
+                         struct passwd **__result) attribute_hidden;
 
 #include <nss.h>
 

diff --git a/include/shadow.h b/include/shadow.h
index 124a1ab..366ea83 100644 (file)
--- a/include/shadow.h
+++ b/include/shadow.h
@@ -11,16 +11,17 @@ extern int __old_getspent_r (struct spwd *__result_buf, char *__buffer,
                             size_t __buflen, struct spwd **__result);
 extern int __getspnam_r (const char *__name, struct spwd *__result_buf,
                         char *__buffer, size_t __buflen,
-                        struct spwd **__result);
+                        struct spwd **__result) attribute_hidden;
 extern int __old_getspnam_r (const char *__name, struct spwd *__result_buf,
                             char *__buffer, size_t __buflen,
                             struct spwd **__result);
 extern int __sgetspent_r (const char *__string,
                          struct spwd *__result_buf, char *__buffer,
-                         size_t __buflen, struct spwd **__result);
+                         size_t __buflen, struct spwd **__result)
+     attribute_hidden;
 extern int __fgetspent_r (FILE *__stream, struct spwd *__result_buf,
                          char *__buffer, size_t __buflen,
-                         struct spwd **__result);
+                         struct spwd **__result) attribute_hidden;
 extern int __lckpwdf (void);
 extern int __ulckpwdf (void);