Hide internal __setrlimit function [BZ #18822]

Hide internal __setrlimit function to allow direct access within libc.so
and libc.a without using GOT nor PLT.

	[BZ #18822]
	* include/sys/resource.h (__setrlimit): Add libc_hidden_proto.
	* resource/setrlimit.c (__setrlimit): Add libc_hidden_def.
	* sysdeps/mach/hurd/setrlimit.c (__setrlimit): Likewise.
	* sysdeps/unix/sysv/linux/setrlimit.c (__setrlimit): Likewise.
	* sysdeps/unix/sysv/linux/setrlimit64.c (__GI___setrlimit): New.

diff --git a/ChangeLog b/ChangeLog
index 709f983..86d30be 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,15 @@
 2017-10-01  H.J. Lu  <hongjiu.lu@intel.com>
 
        [BZ #18822]
+       * include/sys/resource.h (__setrlimit): Add libc_hidden_proto.
+       * resource/setrlimit.c (__setrlimit): Add libc_hidden_def.
+       * sysdeps/mach/hurd/setrlimit.c (__setrlimit): Likewise.
+       * sysdeps/unix/sysv/linux/setrlimit.c (__setrlimit): Likewise.
+       * sysdeps/unix/sysv/linux/setrlimit64.c (__GI___setrlimit): New.
+
+2017-10-01  H.J. Lu  <hongjiu.lu@intel.com>
+
+       [BZ #18822]
        * include/monetary.h (__vstrfmon_l): Add attribute_hidden.
 
 2017-10-01  H.J. Lu  <hongjiu.lu@intel.com>

diff --git a/include/sys/resource.h b/include/sys/resource.h
index 688c46c..c55d4e6 100644 (file)
--- a/include/sys/resource.h
+++ b/include/sys/resource.h
@@ -23,5 +23,6 @@ extern int __getrusage (enum __rusage_who __who, struct rusage *__usage)
 
 extern int __setrlimit (enum __rlimit_resource __resource,
                        const struct rlimit *__rlimits);
+libc_hidden_proto (__setrlimit);
 #endif
 #endif

diff --git a/resource/setrlimit.c b/resource/setrlimit.c
index 6e3a1fb..e02b6a8 100644 (file)
--- a/resource/setrlimit.c
+++ b/resource/setrlimit.c
@@ -29,6 +29,7 @@ __setrlimit (enum __rlimit_resource resource, const struct rlimit *rlimits)
   __set_errno (ENOSYS);
   return -1;
 }
+libc_hidden_def (__setrlimit)
 weak_alias (__setrlimit, setrlimit)
 
 stub_warning (setrlimit)

diff --git a/sysdeps/mach/hurd/setrlimit.c b/sysdeps/mach/hurd/setrlimit.c
index 3ea9af2..693422a 100644 (file)
--- a/sysdeps/mach/hurd/setrlimit.c
+++ b/sysdeps/mach/hurd/setrlimit.c
@@ -53,4 +53,5 @@ __setrlimit (enum __rlimit_resource resource, const struct rlimit *rlimits)
   return 0;
 }
 
+libc_hidden_def (__setrlimit)
 weak_alias (__setrlimit, setrlimit)

diff --git a/sysdeps/unix/sysv/linux/setrlimit.c b/sysdeps/unix/sysv/linux/setrlimit.c
index 8773c78..50a2163 100644 (file)
--- a/sysdeps/unix/sysv/linux/setrlimit.c
+++ b/sysdeps/unix/sysv/linux/setrlimit.c
@@ -48,6 +48,7 @@ __setrlimit (enum __rlimit_resource resource, const struct rlimit *rlim)
   return INLINE_SYSCALL_CALL (prlimit64, 0, resource, &rlim64, NULL);
 }
 
+libc_hidden_def (__setrlimit)
 # if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
 strong_alias (__setrlimit, __setrlimit_1)
 compat_symbol (libc, __setrlimit, setrlimit, GLIBC_2_0);

diff --git a/sysdeps/unix/sysv/linux/setrlimit64.c b/sysdeps/unix/sysv/linux/setrlimit64.c
index db1960f..ff835c8 100644 (file)
--- a/sysdeps/unix/sysv/linux/setrlimit64.c
+++ b/sysdeps/unix/sysv/linux/setrlimit64.c
@@ -43,4 +43,7 @@ weak_alias (__setrlimit64, setrlimit64)
 #if __RLIM_T_MATCHES_RLIM64_T
 strong_alias (__setrlimit64, __setrlimit)
 weak_alias (__setrlimit64, setrlimit)
+# ifdef SHARED
+__hidden_ver1 (__setrlimit64, __GI___setrlimit, __setrlimit64);
+# endif
 #endif