Fix pthreads getrlimit, gettimeofday namespace (bug 17682).

Some pthreads functions use getrlimit and gettimeofday, but these
functions are XSI, not base POSIX; this is a namespace issue for
dynamic linking as well as static linking.  This patch makes them use
__getrlimit and __gettimeofday instead - the former needed to be newly
exported from libc.so at GLIBC_PRIVATE (and so now needs
libc_hidden_proto / libc_hidden_def), the latter was already exported.

Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by the patch).

	[BZ #17682]
	* resource/Versions (libc): Add __getrlimit at GLIBC_PRIVATE.
	* resource/getrlimit.c (__getrlimit): Use libc_hidden_def.
	* sysdeps/mach/hurd/getrlimit.c (__getrlimit): Likewise.
	* include/sys/resource.h (__getrlimit): Use libc_hidden_proto.
	* nptl/nptl-init.c (__pthread_initialize_minimal_internal): Use
	__getrlimit instead of getrlimit.
	* nptl/pthread_cond_timedwait.c (__pthread_cond_timedwait): Use
	__gettimeofday instead of gettimeofday.
	* nptl/pthread_rwlock_timedrdlock.c (pthread_rwlock_timedrdlock):
	Likewise.
	* nptl/pthread_rwlock_timedwrlock.c (pthread_rwlock_timedwrlock):
	Likewise.
	* sysdeps/pthread/aio_misc.c (handle_fildes_io): Likewise.
	* conform/Makefile (test-xfail-POSIX2008/aio.h/linknamespace):
	Remove variable.
	(test-xfail-POSIX2008/pthread.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/time.h/linknamespace): Likewise.

ChangeLog

@@ -1,3 +1,24 @@
+2014-12-06  Joseph Myers  <joseph@codesourcery.com>
+
+	[BZ #17682]
+	* resource/Versions (libc): Add __getrlimit at GLIBC_PRIVATE.
+	* resource/getrlimit.c (__getrlimit): Use libc_hidden_def.
+	* sysdeps/mach/hurd/getrlimit.c (__getrlimit): Likewise.
+	* include/sys/resource.h (__getrlimit): Use libc_hidden_proto.
+	* nptl/nptl-init.c (__pthread_initialize_minimal_internal): Use
+	__getrlimit instead of getrlimit.
+	* nptl/pthread_cond_timedwait.c (__pthread_cond_timedwait): Use
+	__gettimeofday instead of gettimeofday.
+	* nptl/pthread_rwlock_timedrdlock.c (pthread_rwlock_timedrdlock):
+	Likewise.
+	* nptl/pthread_rwlock_timedwrlock.c (pthread_rwlock_timedwrlock):
+	Likewise.
+	* sysdeps/pthread/aio_misc.c (handle_fildes_io): Likewise.
+	* conform/Makefile (test-xfail-POSIX2008/aio.h/linknamespace):
+	Remove variable.
+	(test-xfail-POSIX2008/pthread.h/linknamespace): Likewise.
+	(test-xfail-POSIX2008/time.h/linknamespace): Likewise.
+
 2014-12-05  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>
 
 	* libio/tst-ftell-active-handler.c (do_ftell_test): Fix buffer overrun

NEWS

@@ -13,7 +13,8 @@ Version 2.21
   16619, 16740, 16857, 17192, 17266, 17344, 17363, 17370, 17371, 17411,
   17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555, 17570, 17571,
   17572, 17573, 17574, 17581, 17582, 17583, 17584, 17585, 17589, 17594,
-  17601, 17608, 17616, 17625, 17633, 17647, 17653, 17664, 17665, 17668.
+  17601, 17608, 17616, 17625, 17633, 17647, 17653, 17664, 17665, 17668,
+  17682.
 
 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
   under certain input conditions resulting in the execution of a shell for

conform/Makefile

@@ -424,18 +424,15 @@ test-xfail-XOPEN2K/syslog.h/linknamespace = yes
 test-xfail-XOPEN2K/ucontext.h/linknamespace = yes
 test-xfail-XOPEN2K/unistd.h/linknamespace = yes
 test-xfail-XOPEN2K/wordexp.h/linknamespace = yes
-test-xfail-POSIX2008/aio.h/linknamespace = yes
 test-xfail-POSIX2008/ctype.h/linknamespace = yes
 test-xfail-POSIX2008/dirent.h/linknamespace = yes
 test-xfail-POSIX2008/fcntl.h/linknamespace = yes
 test-xfail-POSIX2008/grp.h/linknamespace = yes
 test-xfail-POSIX2008/mqueue.h/linknamespace = yes
 test-xfail-POSIX2008/netdb.h/linknamespace = yes
-test-xfail-POSIX2008/pthread.h/linknamespace = yes
 test-xfail-POSIX2008/regex.h/linknamespace = yes
 test-xfail-POSIX2008/semaphore.h/linknamespace = yes
 test-xfail-POSIX2008/spawn.h/linknamespace = yes
-test-xfail-POSIX2008/time.h/linknamespace = yes
 test-xfail-POSIX2008/unistd.h/linknamespace = yes
 test-xfail-XOPEN2K8/dirent.h/linknamespace = yes
 test-xfail-XOPEN2K8/fcntl.h/linknamespace = yes

include/sys/resource.h

@@ -9,6 +9,7 @@ libc_hidden_proto (getrlimit64)
 /* Now define the internal interfaces.  */
 extern int __getrlimit (enum __rlimit_resource __resource,
 			struct rlimit *__rlimits);
+libc_hidden_proto (__getrlimit)
 extern int __getrusage (enum __rusage_who __who, struct rusage *__usage)
 	attribute_hidden;
 

nptl/nptl-init.c

@@ -433,7 +433,7 @@ __pthread_initialize_minimal_internal (void)
   /* Determine the default allowed stack size.  This is the size used
      in case the user does not specify one.  */
   struct rlimit limit;
-  if (getrlimit (RLIMIT_STACK, &limit) != 0
+  if (__getrlimit (RLIMIT_STACK, &limit) != 0
       || limit.rlim_cur == RLIM_INFINITY)
     /* The system limit is not usable.  Use an architecture-specific
        default.  */

nptl/pthread_cond_timedwait.c

@@ -131,7 +131,7 @@ __pthread_cond_timedwait (cond, mutex, abstime)
 # else
 	/* Get the current time.  So far we support only one clock.  */
 	struct timeval tv;
-	(void) gettimeofday (&tv, NULL);
+	(void) __gettimeofday (&tv, NULL);
 
 	/* Convert the absolute timeout value to a relative timeout.  */
 	rt.tv_sec = abstime->tv_sec - tv.tv_sec;

nptl/pthread_rwlock_timedrdlock.c

@@ -90,7 +90,7 @@ pthread_rwlock_timedrdlock (rwlock, abstime)
      || !defined lll_futex_timed_wait_bitset)
       /* Get the current time.  So far we support only one clock.  */
       struct timeval tv;
-      (void) gettimeofday (&tv, NULL);
+      (void) __gettimeofday (&tv, NULL);
 
       /* Convert the absolute timeout value to a relative timeout.  */
       struct timespec rt;

nptl/pthread_rwlock_timedwrlock.c

@@ -81,7 +81,7 @@ pthread_rwlock_timedwrlock (rwlock, abstime)
      || !defined lll_futex_timed_wait_bitset)
       /* Get the current time.  So far we support only one clock.  */
       struct timeval tv;
-      (void) gettimeofday (&tv, NULL);
+      (void) __gettimeofday (&tv, NULL);
 
       /* Convert the absolute timeout value to a relative timeout.  */
       struct timespec rt;

resource/Versions

@@ -22,4 +22,7 @@ libc {
     # s*
     setrlimit64;
   }
+  GLIBC_PRIVATE {
+    __getrlimit;
+  }
 }

resource/getrlimit.c

@@ -27,6 +27,7 @@ __getrlimit (enum __rlimit_resource resource, struct rlimit *rlimits)
   __set_errno (ENOSYS);
   return -1;
 }
+libc_hidden_def (__getrlimit)
 weak_alias (__getrlimit, getrlimit)
 
 stub_warning (getrlimit)

sysdeps/mach/hurd/getrlimit.c

@@ -43,4 +43,5 @@ __getrlimit (enum __rlimit_resource resource, struct rlimit *rlimits)
 
   return 0;
 }
+libc_hidden_def (__getrlimit)
 weak_alias (__getrlimit, getrlimit)

sysdeps/pthread/aio_misc.c

@@ -631,7 +631,7 @@ handle_fildes_io (void *arg)
 	  struct timespec wakeup_time;
 
 	  ++idle_thread_count;
-	  gettimeofday (&now, NULL);
+	  __gettimeofday (&now, NULL);
 	  wakeup_time.tv_sec = now.tv_sec + optim.aio_idle_time;
 	  wakeup_time.tv_nsec = now.tv_usec * 1000;
 	  if (wakeup_time.tv_nsec >= 1000000000)