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7b5af2d8f2
In glibc 2.17, the functions clock_getcpuclockid, clock_getres, clock_gettime, clock_nanosleep, and clock_settime were moved from librt.so to libc.so, leaving compatibility stubs behind. Now that the dynamic linker no longer insists on finding versioned symbols in the same library that originally defined them, we do not need the stubs anymore, and this means we don't need GLIBC_PRIVATE __-prefix aliases for most of the functions anymore either. (clock_gettime still needs one.) For ports added before 2.17, libc.so needs to provide two symbol versions for each, the default at GLIBC_2.17 plus a compat version matching what librt had. While I'm at it, move the clock_*.c files and their tests from rt/ to time/.
62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/* Copyright (C) 1999-2019 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <time.h>
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#include <sys/time.h>
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#include <shlib-compat.h>
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/* Set CLOCK to value TP. */
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int
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__clock_settime (clockid_t clock_id, const struct timespec *tp)
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{
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int retval = -1;
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/* Make sure the time cvalue is OK. */
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if (tp->tv_nsec < 0 || tp->tv_nsec >= 1000000000)
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{
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__set_errno (EINVAL);
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return -1;
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}
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switch (clock_id)
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{
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case CLOCK_REALTIME:
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{
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struct timeval tv;
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TIMESPEC_TO_TIMEVAL (&tv, tp);
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retval = __settimeofday (&tv, NULL);
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}
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break;
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default:
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__set_errno (EINVAL);
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break;
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}
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return retval;
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}
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libc_hidden_def (__clock_settime)
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versioned_symbol (libc, __clock_settime, clock_settime, GLIBC_2_17);
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/* clock_settime moved to libc in version 2.17;
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old binaries may expect the symbol version it had in librt. */
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#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
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strong_alias (__clock_settime, __clock_settime_2);
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compat_symbol (libc, __clock_settime_2, clock_settime, GLIBC_2_2);
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#endif
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