Add clock_adjtime syscall.

2 files changed, 201 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/bits/time.h b/sysdeps/unix/sysv/linux/bits/time.h
new file mode 100644
index 0000000000..02a05114f2
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/time.h
@@ -0,0 +1,93 @@
+/* System-dependent timing definitions.  Linux version.
+   Copyright (C) 1996,1997,1999-2003,2010,2011 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.  */
+
+/*
+ * Never include this file directly; use <time.h> instead.
+ */
+
+#if defined __need_timeval || defined __USE_GNU
+# ifndef _STRUCT_TIMEVAL
+#  define _STRUCT_TIMEVAL	1
+#  include <bits/types.h>
+
+/* A time value that is accurate to the nearest
+   microsecond but also has a range of years.  */
+struct timeval
+  {
+    __time_t tv_sec;		/* Seconds.  */
+    __suseconds_t tv_usec;	/* Microseconds.  */
+  };
+# endif	/* struct timeval */
+#endif
+
+#ifndef __need_timeval
+# ifndef _BITS_TIME_H
+#  define _BITS_TIME_H	1
+
+/* ISO/IEC 9899:1990 7.12.1: <time.h>
+   The macro `CLOCKS_PER_SEC' is the number per second of the value
+   returned by the `clock' function. */
+/* CAE XSH, Issue 4, Version 2: <time.h>
+   The value of CLOCKS_PER_SEC is required to be 1 million on all
+   XSI-conformant systems. */
+#  define CLOCKS_PER_SEC  1000000l
+
+#  if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K
+/* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK
+   presents the real value for clock ticks per second for the system.  */
+#   include <bits/types.h>
+extern long int __sysconf (int);
+#   define CLK_TCK ((__clock_t) __sysconf (2))	/* 2 is _SC_CLK_TCK */
+#  endif
+
+#  ifdef __USE_POSIX199309
+/* Identifier for system-wide realtime clock.  */
+#   define CLOCK_REALTIME		0
+/* Monotonic system-wide clock.  */
+#   define CLOCK_MONOTONIC		1
+/* High-resolution timer from the CPU.  */
+#   define CLOCK_PROCESS_CPUTIME_ID	2
+/* Thread-specific CPU-time clock.  */
+#   define CLOCK_THREAD_CPUTIME_ID	3
+/* Monotonic system-wide clock, not adjusted for frequency scaling.  */
+#   define CLOCK_MONOTONIC_RAW		4
+/* Identifier for system-wide realtime clock, updated only on ticks.  */
+#   define CLOCK_REALTIME_COARSE	5
+/* Monotonic system-wide clock, updated only on ticks.  */
+#   define CLOCK_MONOTONIC_COARSE	6
+
+/* Flag to indicate time is absolute.  */
+#   define TIMER_ABSTIME		1
+#  endif
+
+#  ifdef __USE_GNU
+#   include <bits/timex.h>
+
+__BEGIN_DECLS
+
+/* Tune a POSIX clock.  */
+extern int clock_adjtime (__clockid_t __clock_id, struct timex *__utx) __THROW;
+
+__END_DECLS
+#  endif /* use GNU */
+
+# endif	/* bits/time.h */
+#endif
+
+#undef __need_timeval
diff --git a/sysdeps/unix/sysv/linux/bits/timex.h b/sysdeps/unix/sysv/linux/bits/timex.h
new file mode 100644
index 0000000000..67de67e1ca
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/timex.h
@@ -0,0 +1,108 @@
+/* Copyright (C) 1995-1997,1999,2007,2009,2011 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.  */
+
+#ifndef	_BITS_TIMEX_H
+#define	_BITS_TIMEX_H	1
+
+/* These definitions from linux/timex.h as of 2.6.30.  */
+
+struct timex
+{
+  unsigned int modes;	/* mode selector */
+  long int offset;	/* time offset (usec) */
+  long int freq;	/* frequency offset (scaled ppm) */
+  long int maxerror;	/* maximum error (usec) */
+  long int esterror;	/* estimated error (usec) */
+  int status;		/* clock command/status */
+  long int constant;	/* pll time constant */
+  long int precision;	/* clock precision (usec) (read only) */
+  long int tolerance;	/* clock frequency tolerance (ppm) (read only) */
+  struct timeval time;	/* (read only) */
+  long int tick;	/* (modified) usecs between clock ticks */
+
+  long int ppsfreq;	/* pps frequency (scaled ppm) (ro) */
+  long int jitter;	/* pps jitter (us) (ro) */
+  int shift;		/* interval duration (s) (shift) (ro) */
+  long int stabil;	/* pps stability (scaled ppm) (ro) */
+  long int jitcnt;	/* jitter limit exceeded (ro) */
+  long int calcnt;	/* calibration intervals (ro) */
+  long int errcnt;	/* calibration errors (ro) */
+  long int stbcnt;	/* stability limit exceeded (ro) */
+
+  int tai;		/* TAI offset (ro) */
+
+  /* ??? */
+  int  :32; int  :32; int  :32; int  :32;
+  int  :32; int  :32; int  :32; int  :32;
+  int  :32; int  :32; int  :32;
+};
+
+/* Mode codes (timex.mode) */
+#define ADJ_OFFSET		0x0001	/* time offset */
+#define ADJ_FREQUENCY		0x0002	/* frequency offset */
+#define ADJ_MAXERROR		0x0004	/* maximum time error */
+#define ADJ_ESTERROR		0x0008	/* estimated time error */
+#define ADJ_STATUS		0x0010	/* clock status */
+#define ADJ_TIMECONST		0x0020	/* pll time constant */
+#define ADJ_TAI			0x0080	/* set TAI offset */
+#define ADJ_MICRO		0x1000	/* select microsecond resolution */
+#define ADJ_NANO		0x2000	/* select nanosecond resolution */
+#define ADJ_TICK		0x4000	/* tick value */
+#define ADJ_OFFSET_SINGLESHOT	0x8001	/* old-fashioned adjtime */
+#define ADJ_OFFSET_SS_READ	0xa001	/* read-only adjtime */
+
+/* xntp 3.4 compatibility names */
+#define MOD_OFFSET	ADJ_OFFSET
+#define MOD_FREQUENCY	ADJ_FREQUENCY
+#define MOD_MAXERROR	ADJ_MAXERROR
+#define MOD_ESTERROR	ADJ_ESTERROR
+#define MOD_STATUS	ADJ_STATUS
+#define MOD_TIMECONST	ADJ_TIMECONST
+#define MOD_CLKB	ADJ_TICK
+#define MOD_CLKA	ADJ_OFFSET_SINGLESHOT /* 0x8000 in original */
+#define MOD_TAI		ADJ_TAI
+#define MOD_MICRO	ADJ_MICRO
+#define MOD_NANO	ADJ_NANO
+
+
+/* Status codes (timex.status) */
+#define STA_PLL		0x0001	/* enable PLL updates (rw) */
+#define STA_PPSFREQ	0x0002	/* enable PPS freq discipline (rw) */
+#define STA_PPSTIME	0x0004	/* enable PPS time discipline (rw) */
+#define STA_FLL		0x0008	/* select frequency-lock mode (rw) */
+
+#define STA_INS		0x0010	/* insert leap (rw) */
+#define STA_DEL		0x0020	/* delete leap (rw) */
+#define STA_UNSYNC	0x0040	/* clock unsynchronized (rw) */
+#define STA_FREQHOLD	0x0080	/* hold frequency (rw) */
+
+#define STA_PPSSIGNAL	0x0100	/* PPS signal present (ro) */
+#define STA_PPSJITTER	0x0200	/* PPS signal jitter exceeded (ro) */
+#define STA_PPSWANDER	0x0400	/* PPS signal wander exceeded (ro) */
+#define STA_PPSERROR	0x0800	/* PPS signal calibration error (ro) */
+
+#define STA_CLOCKERR	0x1000	/* clock hardware fault (ro) */
+#define STA_NANO	0x2000	/* resolution (0 = us, 1 = ns) (ro) */
+#define STA_MODE	0x4000	/* mode (0 = PLL, 1 = FLL) (ro) */
+#define STA_CLK		0x8000	/* clock source (0 = A, 1 = B) (ro) */
+
+/* Read-only bits */
+#define STA_RONLY (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER | \
+    STA_PPSERROR | STA_CLOCKERR | STA_NANO | STA_MODE | STA_CLK)
+
+#endif /* bits/timex.h */