Updated to fedora-glibc-20060815T0533

4 files changed, 131 insertions, 97 deletions

diff --git a/sysdeps/unix/clock_settime.c b/sysdeps/unix/clock_settime.c
index 0194999b36..a93be6349b 100644
--- a/sysdeps/unix/clock_settime.c
+++ b/sysdeps/unix/clock_settime.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+/* Copyright (C) 1999-2004, 2006 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -36,6 +36,43 @@ extern void __pthread_clock_settime (clockid_t clock_id, hp_timing_t offset)
 #endif
 
 
+#if HP_TIMING_AVAIL
+static int
+hp_timing_settime (clockid_t clock_id, const struct timespec *tp)
+{
+  hp_timing_t tsc;
+  hp_timing_t usertime;
+
+  /* First thing is to get the current time.  */
+  HP_TIMING_NOW (tsc);
+
+  if (__builtin_expect (freq == 0, 0))
+    {
+      /* This can only happen if we haven't initialized the `freq'
+	 variable yet.  Do this now. We don't have to protect this
+	 code against multiple execution since all of them should lead
+	 to the same result.  */
+      freq = __get_clockfreq ();
+      if (__builtin_expect (freq == 0, 0))
+	/* Something went wrong.  */
+	return -1;
+    }
+
+  /* Convert the user-provided time into CPU ticks.  */
+  usertime = tp->tv_sec * freq + (tp->tv_nsec * freq) / 1000000000ull;
+
+  /* Determine the offset and use it as the new base value.  */
+  if (clock_id == CLOCK_PROCESS_CPUTIME_ID
+      || __pthread_clock_settime == NULL)
+    GL(dl_cpuclock_offset) = tsc - usertime;
+  else
+    __pthread_clock_settime (clock_id, tsc - usertime);
+
+  return 0;
+}
+#endif
+
+
 /* Set CLOCK to value TP.  */
 int
 clock_settime (clockid_t clock_id, const struct timespec *tp)
@@ -70,55 +107,22 @@ clock_settime (clockid_t clock_id, const struct timespec *tp)
 #endif
 
     default:
-#if HP_TIMING_AVAIL
-      if ((clock_id & ((1 << CLOCK_IDFIELD_SIZE) - 1))
-	  != CLOCK_THREAD_CPUTIME_ID)
+#ifdef SYSDEP_SETTIME_CPU
+      SYSDEP_SETTIME_CPU;
 #endif
+#ifndef HANDLED_CPUTIME
+# if HP_TIMING_AVAIL
+      if (CPUCLOCK_WHICH (clock_id) == CLOCK_PROCESS_CPUTIME_ID
+	  || CPUCLOCK_WHICH (clock_id) == CLOCK_THREAD_CPUTIME_ID)
+	retval = hp_timing_settime (clock_id, tp);
+      else
+# endif
 	{
 	  __set_errno (EINVAL);
 	  retval = -1;
-	  break;
 	}
-
-#if HP_TIMING_AVAIL
-      /* FALLTHROUGH.  */
-    case CLOCK_PROCESS_CPUTIME_ID:
-      {
-	hp_timing_t tsc;
-	hp_timing_t usertime;
-
-	/* First thing is to get the current time.  */
-	HP_TIMING_NOW (tsc);
-
-	if (__builtin_expect (freq == 0, 0))
-	  {
-	    /* This can only happen if we haven't initialized the `freq'
-	       variable yet.  Do this now. We don't have to protect this
-	       code against multiple execution since all of them should
-	       lead to the same result.  */
-	    freq = __get_clockfreq ();
-	    if (__builtin_expect (freq == 0, 0))
-	      {
-		/* Something went wrong.  */
-		retval = -1;
-		break;
-	      }
-	  }
-
-	/* Convert the user-provided time into CPU ticks.  */
-	usertime = tp->tv_sec * freq + (tp->tv_nsec * freq) / 1000000000ull;
-
-	/* Determine the offset and use it as the new base value.  */
-	if (clock_id == CLOCK_PROCESS_CPUTIME_ID
-	    || __pthread_clock_settime == NULL)
-	  GL(dl_cpuclock_offset) = tsc - usertime;
-	else
-	  __pthread_clock_settime (clock_id, tsc - usertime);
-
-	retval = 0;
-      }
-      break;
 #endif
+      break;
     }
 
   return retval;
diff --git a/sysdeps/unix/nice.c b/sysdeps/unix/nice.c
index 1dd57fa5c0..6e75b0327b 100644
--- a/sysdeps/unix/nice.c
+++ b/sysdeps/unix/nice.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1992, 1996, 1997, 2001, 2002 Free Software Foundation, Inc.
+/* Copyright (C) 1992, 1996, 1997, 2001, 2002, 2006
+   Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -47,9 +48,11 @@ nice (int incr)
   else if (prio >= PRIO_MAX)
     prio = PRIO_MAX - 1;
   result = setpriority (PRIO_PROCESS, 0, prio);
-  if (result != -1)
-    return getpriority (PRIO_PROCESS, 0);
-  else
-    return -1;
-
+  if (result == -1)
+    {
+      if (errno == EACCES)
+	errno = EPERM;
+      return -1;
+    }
+  return getpriority (PRIO_PROCESS, 0);
 }
diff --git a/sysdeps/unix/sysv/linux/clock_settime.c b/sysdeps/unix/sysv/linux/clock_settime.c
index 31ba0225fb..731b7be7b8 100644
--- a/sysdeps/unix/sysv/linux/clock_settime.c
+++ b/sysdeps/unix/sysv/linux/clock_settime.c
@@ -16,10 +16,65 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#include <errno.h>
 #include <sysdep.h>
 
+#include "kernel-posix-cpu-timers.h"
 #include <kernel-features.h>
 
+#ifndef HAVE_CLOCK_GETTIME_VSYSCALL
+# undef INTERNAL_VSYSCALL
+# define INTERNAL_VSYSCALL INTERNAL_SYSCALL
+# undef INLINE_VSYSCALL
+# define INLINE_VSYSCALL INLINE_SYSCALL
+#else
+# include <bits/libc-vdso.h>
+#endif
+
+#if __ASSUME_POSIX_CPU_TIMERS <= 0 && defined __NR_clock_settime
+extern int __libc_missing_posix_timers attribute_hidden;
+extern int __libc_missing_posix_cpu_timers attribute_hidden;
+
+static int
+maybe_syscall_settime_cpu (clockid_t clock_id, const struct timespec *tp)
+{
+  int e = EINVAL;
+
+  if (!__libc_missing_posix_cpu_timers)
+    {
+      INTERNAL_SYSCALL_DECL (err);
+      int r = INTERNAL_VSYSCALL (clock_settime, err, 2, clock_id, tp);
+      if (!INTERNAL_SYSCALL_ERROR_P (r, err))
+        return 0;
+
+      e = INTERNAL_SYSCALL_ERRNO (r, err);
+# ifndef __ASSUME_POSIX_TIMERS
+      if (e == ENOSYS)
+	{
+	  __libc_missing_posix_timers = 1;
+	  __libc_missing_posix_cpu_timers = 1;
+	  e = EINVAL;
+	}
+      else
+# endif
+	{
+	  if (e == EINVAL)
+	    {
+	      /* Check whether the kernel supports CPU clocks at all.
+		 If not, record it for the future.  */
+	      r = INTERNAL_VSYSCALL (clock_getres, err, 2,
+				     MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED),
+				     NULL);
+	      if (INTERNAL_SYSCALL_ERROR_P (r, err))
+		__libc_missing_posix_cpu_timers = 1;
+	    }
+	}
+    }
+
+  return e;
+}
+#endif
+
 
 #ifdef __ASSUME_POSIX_TIMERS
 /* This means the REALTIME clock is definitely supported in the
@@ -73,4 +128,22 @@ extern int __libc_missing_posix_timers attribute_hidden;
 # define HANDLED_REALTIME	1
 #endif
 
+#if __ASSUME_POSIX_CPU_TIMERS > 0
+# define HANDLED_CPUTIME 1
+# define SYSDEP_SETTIME_CPU \
+  retval = INLINE_SYSCALL (clock_settime, 2, clock_id, tp)
+#elif defined __NR_clock_settime
+# define SYSDEP_SETTIME_CPU \
+  retval = maybe_syscall_settime_cpu (clock_id, tp);			      \
+  if (retval == 0)							      \
+    break;								      \
+  if (retval != EINVAL || !__libc_missing_posix_cpu_timers)		      \
+    {									      \
+      __set_errno (retval);						      \
+      retval = -1;							      \
+      break;								      \
+    }									      \
+  do { } while (0)
+#endif
+
 #include <sysdeps/unix/clock_settime.c>
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/pause.c b/sysdeps/unix/sysv/linux/sparc/sparc64/pause.c
index 40fab28d47..2ec5bd39ad 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/pause.c
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/pause.c
@@ -1,47 +1 @@
-/* pause -- suspend the process until a signal arrives.  POSIX.1 version.
-   Copyright (C) 2003 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#include <errno.h>
-#include <signal.h>
-#include <unistd.h>
-#include <sysdep-cancel.h>
-
-#include <sysdep.h>
-#include <sys/syscall.h>
-#include <bp-checks.h>
-
-/* Suspend the process until a signal arrives.
-   This always returns -1 and sets errno to EINTR.  */
-int
-__libc_pause (void)
-{
-  sigset_t set;
-
-  __sigemptyset (&set);
-  INLINE_SYSCALL (rt_sigprocmask, 4, SIG_BLOCK, CHECK_SIGSET (NULL),
-		  CHECK_SIGSET_NULL_OK (&set), _NSIG / 8);
-
-  /* pause is a cancellation point, but so is sigsuspend.
-     So no need for anything special here.  */
-
-  return __sigsuspend (&set);
-}
-weak_alias (__libc_pause, pause)
-
-LIBC_CANCEL_HANDLED ();		/* sigsuspend handles our cancellation.  */
+#include <sysdeps/posix/pause.c>