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Code to handle compatibility of syscall for adjtime interface.
This commit is contained in:
Ulrich Drepper
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0f04509d00
commit
d958c12167
202
sysdeps/unix/sysv/linux/alpha/adjtime.c
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202
sysdeps/unix/sysv/linux/alpha/adjtime.c
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/* Copyright (C) 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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struct timeval32
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{
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int tv_sec, tv_usec;
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};
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struct timex32 {
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unsigned int modes; /* mode selector */
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long offset; /* time offset (usec) */
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long freq; /* frequency offset (scaled ppm) */
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long maxerror; /* maximum error (usec) */
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long esterror; /* estimated error (usec) */
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int status; /* clock command/status */
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long constant; /* pll time constant */
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long precision; /* clock precision (usec) (read only) */
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long tolerance; /* clock frequency tolerance (ppm)
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* (read only)
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*/
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struct timeval32 time; /* (read only) */
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long tick; /* (modified) usecs between clock ticks */
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long ppsfreq; /* pps frequency (scaled ppm) (ro) */
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long jitter; /* pps jitter (us) (ro) */
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int shift; /* interval duration (s) (shift) (ro) */
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long stabil; /* pps stability (scaled ppm) (ro) */
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long jitcnt; /* jitter limit exceeded (ro) */
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long calcnt; /* calibration intervals (ro) */
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long errcnt; /* calibration errors (ro) */
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long stbcnt; /* stability limit exceeded (ro) */
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int :32; int :32; int :32; int :32;
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int :32; int :32; int :32; int :32;
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int :32; int :32; int :32; int :32;
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};
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#define TIMEVAL timeval32
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#define TIMEX timex32
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#define ADJTIME __adjtime_tv32
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#define ADJTIMEX(x) __adjtimex_tv32 (x)
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#if defined HAVE_ELF && defined PIC && defined DO_VERSIONING
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#define LINKAGE
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#else
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#define LINKAGE static
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#endif
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LINKAGE int ADJTIME (const struct TIMEVAL *itv, struct TIMEVAL *otv);
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extern int ADJTIMEX (struct TIMEX *);
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#include <sysdeps/unix/sysv/linux/adjtime.c>
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#if defined HAVE_ELF && defined PIC && defined DO_VERSIONING
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symbol_version (__adjtime_tv32, adjtime, GLIBC_2.0);
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#endif
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#undef TIMEVAL
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#define TIMEVAL timeval
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#undef TIMEX
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#define TIMEX timex
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#undef ADJTIME
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#define ADJTIME __adjtime_tv64
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#undef ADJTIMEX
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#define ADJTIMEX(x) __syscall_adjtimex_tv64 (x)
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#undef LINKAGE
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#define LINKAGE static
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LINKAGE int ADJTIME (const struct TIMEVAL *itv, struct TIMEVAL *otv);
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extern int ADJTIMEX (struct TIMEX *);
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#include <sysdeps/unix/sysv/linux/adjtime.c>
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static int missing_adjtimex = 0;
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int
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__adjtime (itv, otv)
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const struct timeval *itv;
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struct timeval *otv;
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{
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int ret;
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if (!missing_adjtimex)
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{
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ret = __adjtime_tv64 (itv, otv);
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if (ret && errno == ENOSYS)
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missing_adjtimex = 1;
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}
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if (missing_adjtimex)
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{
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struct timeval32 itv32, otv32;
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itv32.tv_sec = itv->tv_sec;
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itv32.tv_usec = itv->tv_usec;
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ret = __adjtime_tv32 (&itv32, &otv32);
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if (ret == 0)
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{
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otv->tv_sec = otv32.tv_sec;
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otv->tv_usec = otv32.tv_usec;
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}
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}
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return ret;
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}
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#if defined HAVE_ELF && defined PIC && defined DO_VERSIONING
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default_symbol_version (__adjtime, adjtime, GLIBC_2.1);
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#else
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weak_alias (__adjtime, adjtime);
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#endif
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extern int __syscall_adjtimex_tv64 (struct timex *tx);
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int
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__adjtimex_tv64 (tx)
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struct timex *tx;
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{
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int ret;
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if (!missing_adjtimex)
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{
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ret = __syscall_adjtimex_tv64 (tx);
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if (ret && errno == ENOSYS)
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missing_adjtimex = 1;
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}
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if (missing_adjtimex)
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{
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struct timex32 tx32;
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tx32.modes = tx->modes;
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tx32.offset = tx->offset;
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tx32.freq = tx->freq;
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tx32.maxerror = tx->maxerror;
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tx32.esterror = tx->esterror;
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tx32.status = tx->status;
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tx32.constant = tx->constant;
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tx32.precision = tx->precision;
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tx32.tolerance = tx->tolerance;
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tx32.time.tv_sec = tx->time.tv_sec;
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tx32.time.tv_sec = tx->time.tv_usec;
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tx32.tick = tx->tick;
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tx32.ppsfreq = tx->ppsfreq;
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tx32.jitter = tx->jitter;
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tx32.shift = tx->shift;
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tx32.stabil = tx->stabil;
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tx32.jitcnt = tx->jitcnt;
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tx32.calcnt = tx->calcnt;
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tx32.errcnt = tx->errcnt;
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tx32.stbcnt = tx->stbcnt;
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ret = __adjtimex_tv32 (&tx32);
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if (ret == 0)
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{
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tx->modes = tx32.modes;
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tx->offset = tx32.offset;
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tx->freq = tx32.freq;
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tx->maxerror = tx32.maxerror;
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tx->esterror = tx32.esterror;
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tx->status = tx32.status;
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tx->constant = tx32.constant;
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tx->precision = tx32.precision;
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tx->tolerance = tx32.tolerance;
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tx->time.tv_sec = tx32.time.tv_sec;
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tx->time.tv_usec = tx32.time.tv_sec;
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tx->tick = tx32.tick;
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tx->ppsfreq = tx32.ppsfreq;
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tx->jitter = tx32.jitter;
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tx->shift = tx32.shift;
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tx->stabil = tx32.stabil;
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tx->jitcnt = tx32.jitcnt;
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tx->calcnt = tx32.calcnt;
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tx->errcnt = tx32.errcnt;
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tx->stbcnt = tx32.stbcnt;
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}
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}
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return ret;
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}
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#if defined HAVE_ELF && defined PIC && defined DO_VERSIONING
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strong_alias (__adjtimex_tv64, __adjtimex_tv64p);
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default_symbol_version (__adjtimex_tv64, __adjtimex, GLIBC_2.1);
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default_symbol_version (__adjtimex_tv64p, adjtimex, GLIBC_2.1);
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#else
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weak_alias (__adjtimex_tv64, __adjtimex);
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weak_alias (__adjtimex_tv64, adjtimex);
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#endif
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