mirror_zfs/lib/libspl/include/sys/time.h
Brian Behlendorf 6413c95fbd
Linux 4.18 compat: inode timespec -> timespec64
Commit torvalds/linux@95582b0 changes the inode i_atime, i_mtime,
and i_ctime members form timespec's to timespec64's to make them
2038 safe.  As part of this change the current_time() function was
also updated to return the timespec64 type.

Resolve this issue by introducing a new inode_timespec_t type which
is defined to match the timespec type used by the inode.  It should
be used when working with inode timestamps to ensure matching types.

The timestruc_t type under Illumos was used in a similar fashion but
was specified to always be a timespec_t.  Rather than incorrectly
define this type all timespec_t types have been replaced by the new
inode_timespec_t type.

Finally, the kernel and user space 'sys/time.h' headers were aligned
with each other.  They define as appropriate for the context several
constants as macros and include static inline implementation of
gethrestime(), gethrestime_sec(), and gethrtime().

Reviewed-by: Chunwei Chen <tuxoko@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7643
2018-06-19 21:51:18 -07:00

108 lines
2.3 KiB
C

/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _LIBSPL_SYS_TIME_H
#define _LIBSPL_SYS_TIME_H
#include <time.h>
#include <sys/types.h>
#include_next <sys/time.h>
#ifndef SEC
#define SEC 1
#endif
#ifndef MILLISEC
#define MILLISEC 1000
#endif
#ifndef MICROSEC
#define MICROSEC 1000000
#endif
#ifndef NANOSEC
#define NANOSEC 1000000000
#endif
#ifndef NSEC_PER_USEC
#define NSEC_PER_USEC 1000L
#endif
#ifndef MSEC2NSEC
#define MSEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MILLISEC))
#endif
#ifndef NSEC2MSEC
#define NSEC2MSEC(n) ((n) / (NANOSEC / MILLISEC))
#endif
#ifndef USEC2NSEC
#define USEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MICROSEC))
#endif
#ifndef NSEC2USEC
#define NSEC2USEC(n) ((n) / (NANOSEC / MICROSEC))
#endif
#ifndef NSEC2SEC
#define NSEC2SEC(n) ((n) / (NANOSEC / SEC))
#endif
#ifndef SEC2NSEC
#define SEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / SEC))
#endif
typedef long long hrtime_t;
typedef struct timespec timespec_t;
typedef struct timespec inode_timespec_t;
static inline void
gethrestime(inode_timespec_t *ts)
{
struct timeval tv;
(void) gettimeofday(&tv, NULL);
ts->tv_sec = tv.tv_sec;
ts->tv_nsec = tv.tv_usec * NSEC_PER_USEC;
}
static inline time_t
gethrestime_sec(void)
{
struct timeval tv;
(void) gettimeofday(&tv, NULL);
return (tv.tv_sec);
}
static inline hrtime_t
gethrtime(void)
{
struct timespec ts;
(void) clock_gettime(CLOCK_MONOTONIC, &ts);
return ((((u_int64_t)ts.tv_sec) * NANOSEC) + ts.tv_nsec);
}
#endif /* _LIBSPL_SYS_TIME_H */