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libcsupport: Implement utime() in terms of utimensat()

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utime() now calls utimensat() to update file access
and modification timestamps.

Updated license.

Closes #4397
This commit is contained in:
Ryan Long
2021-04-28 12:42:50 -04:00
committed by Joel Sherrill
parent 335f705082
commit bb70412306
1 changed files with 41 additions and 33 deletions
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74
cpukit/libcsupport/src/utime.c
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@@ -1,58 +1,66 @@
/* SPDX-License-Identifier: BSD-2-Clause */
/** /**
* @file * @file
* *
* @brief Set File Access and Modification Times
* @ingroup libcsupport * @ingroup libcsupport
*
* @brief Set file access and modification times in seconds.
*/ */
/* /*
* COPYRIGHT (c) 1989-1999. * COPYRIGHT (C) 1989, 2021 On-Line Applications Research Corporation (OAR).
* On-Line Applications Research Corporation (OAR).
* *
* The license and distribution terms for this file may be * Redistribution and use in source and binary forms, with or without
* found in the file LICENSE in this distribution or at * modification, are permitted provided that the following conditions
* http://www.rtems.org/license/LICENSE. * are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/ */
#ifdef HAVE_CONFIG_H #ifdef HAVE_CONFIG_H
#include "config.h" #include "config.h"
#endif #endif
/* FIXME: This include is a workaround for a broken <utime.h> in Newlib */ #include <sys/stat.h>
#include <sys/types.h>
#include <utime.h>
#include <rtems/libio_.h> #include <rtems/libio_.h>
#include <fcntl.h>
#include <utime.h>
/** /**
* POSIX 1003.1b 5.5.6 - Set File Access and Modification Times * https://pubs.opengroup.org/onlinepubs/009604599/functions/utime.html
*
* Set file access and modification times
*/ */
int utime( const char *path, const struct utimbuf *times ) int utime(
const char *path,
const struct utimbuf *times
)
{ {
int rv = 0; struct timespec new_times[2];
rtems_filesystem_eval_path_context_t ctx;
int eval_flags = RTEMS_FS_FOLLOW_LINK;
const rtems_filesystem_location_info_t *currentloc =
rtems_filesystem_eval_path_start( &ctx, path, eval_flags );
struct utimbuf now_times;
if ( times == NULL ) { if ( times == NULL ) {
time_t now = time( NULL ); return utimensat(AT_FDCWD, path, NULL, 0);
now_times.actime = now;
now_times.modtime = now;
times = &now_times;
} }
rv = (*currentloc->mt_entry->ops->utime_h)( _Timespec_Set(&new_times[0], times->actime, 0);
currentloc, _Timespec_Set(&new_times[1], times->modtime, 0);
times->actime,
times->modtime
);
rtems_filesystem_eval_path_cleanup( &ctx ); return utimensat(AT_FDCWD, path, new_times, 0);
return rv;
} }