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Use clock_settime to implement stime; withdraw stime.

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Unconditionally, on all ports, use clock_settime to implement stime,
not settimeofday or a direct syscall.  Then convert stime into a
compatibility symbol and remove its prototype from time.h.

Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu,
powerpc64-linux-gnu, powerpc-linux-gnu, and aarch64-linux-gnu.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
This commit is contained in:
Zack Weinberg 2019-08-16 15:03:16 -04:00 committed by Adhemerval Zanella
parent 4a39c34c4f
commit 12cbde1dae
5 changed files with 16 additions and 57 deletions
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4
NEWS
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@ -30,6 +30,10 @@ Deprecated and removed features, and other changes affecting compatibility:
Request 25 to TS 18661-1, as applied for C2X. Existing binaries that pass
floating-point arguments directly will continue to work.
* The obsolete function stime is no longer available to newly linked
binaries and it has been removed from <time.h> header. This function
has been deprecated in favor of clock_settime.
Changes to build and runtime requirements:
[Add changes to build and runtime requirements here]

39
sysdeps/unix/stime.c
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@ -1,39 +0,0 @@
/* Copyright (C) 1992-2019 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, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <stddef.h> /* For NULL. */
#include <sys/time.h>
#include <time.h>
/* Set the system clock to *WHEN. */
int
stime (const time_t *when)
{
struct timeval tv;
if (when == NULL)
{
__set_errno (EINVAL);
return -1;
}
tv.tv_sec = *when;
tv.tv_usec = 0;
return __settimeofday (&tv, (struct timezone *) 0);
}

1
sysdeps/unix/sysv/linux/syscalls.list
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@ -61,7 +61,6 @@ setfsgid EXTRA setfsgid i:i setfsgid
setfsuid EXTRA setfsuid i:i setfsuid
setpgid - setpgid i:ii __setpgid setpgid
sigaltstack - sigaltstack i:PP __sigaltstack sigaltstack
stime - stime i:p stime
sysinfo EXTRA sysinfo i:p __sysinfo sysinfo
swapon - swapon i:si __swapon swapon
swapoff - swapoff i:s __swapoff swapoff

23
time/stime.c
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@ -15,23 +15,24 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <shlib-compat.h>
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_31)
#include <time.h>
#include <stddef.h>
/* Set the system clock to *WHEN. */
int
stime (const time_t *when)
attribute_compat_text_section
__stime (const time_t *when)
{
if (when == NULL)
{
__set_errno (EINVAL);
return -1;
}
struct timespec ts;
ts.tv_sec = *when;
ts.tv_nsec = 0;
__set_errno (ENOSYS);
return -1;
return __clock_settime (CLOCK_REALTIME, &ts);
}
stub_warning (stime)
compat_symbol (libc, __stime, stime, GLIBC_2_0);
#endif

6
time/time.h
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@ -175,12 +175,6 @@ extern int daylight;
extern long int timezone;
#endif
#ifdef __USE_MISC
/* Set the system time to *WHEN.
This call is restricted to the superuser. */
extern int stime (const time_t *__when) __THROW;
#endif
/* Nonzero if YEAR is a leap year (every 4 years,
except every 100th isn't, and every 400th is). */