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Linux 4.18 compat: inode timespec -> timespec64

Browse Source 
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define this type all timespec_t types have been replaced by the new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
This commit is contained in:
Brian Behlendorf 2018-06-19 21:51:18 -07:00 committed by GitHub
parent aeb39df726
commit 6413c95fbd
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
27 changed files with 134 additions and 143 deletions
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7
config/kernel-current-time.m4
View File

@ -1,15 +1,14 @@
dnl #
dnl # 4.9, current_time() added
dnl # 4.18, return type changed from timespec to timespec64
dnl #
AC_DEFUN([ZFS_AC_KERNEL_CURRENT_TIME],
[AC_MSG_CHECKING([whether current_time() exists])
ZFS_LINUX_TRY_COMPILE_SYMBOL([
#include <linux/fs.h>
], [
struct inode ip;
struct timespec now __attribute__ ((unused));
now = current_time(&ip);
struct inode ip __attribute__ ((unused));
ip.i_atime = current_time(&ip);
], [current_time], [fs/inode.c], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_CURRENT_TIME, 1, [current_time() exists])

25
config/kernel-inode-times.m4 Normal file
View File

@ -0,0 +1,25 @@
dnl #
dnl # 4.18 API change
dnl # i_atime, i_mtime, and i_ctime changed from timespec to timespec64.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_INODE_TIMES], [
AC_MSG_CHECKING([whether inode->i_*time's are timespec64])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Werror"
ZFS_LINUX_TRY_COMPILE([
#include <linux/fs.h>
],[
struct inode ip;
struct timespec ts;
memset(&ip, 0, sizeof(ip));
ts = ip.i_mtime;
],[
AC_MSG_RESULT(no)
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_INODE_TIMESPEC64_TIMES, 1,
[inode->i_*time's are timespec64])
])
EXTRA_KCFLAGS="$tmp_flags"
])

1
config/kernel.m4
View File

@ -31,6 +31,7 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
ZFS_AC_KERNEL_WAIT_ON_BIT
ZFS_AC_KERNEL_WAIT_QUEUE_ENTRY_T
ZFS_AC_KERNEL_WAIT_QUEUE_HEAD_ENTRY
ZFS_AC_KERNEL_INODE_TIMES
ZFS_AC_KERNEL_INODE_LOCK
ZFS_AC_KERNEL_GROUP_INFO_GID
ZFS_AC_KERNEL_WRITE

1
include/spl/sys/condvar.h
View File

@ -30,6 +30,7 @@
#include <sys/mutex.h>
#include <sys/callo.h>
#include <sys/wait.h>
#include <sys/time.h>
/*
* The kcondvar_t struct is protected by mutex taken externally before

23
include/spl/sys/time.h
View File

@ -54,13 +54,26 @@
static const int hz = HZ;
typedef longlong_t hrtime_t;
typedef struct timespec timespec_t;
#define TIMESPEC_OVERFLOW(ts) \
((ts)->tv_sec < TIME_MIN || (ts)->tv_sec > TIME_MAX)
#if defined(HAVE_INODE_TIMESPEC64_TIMES)
typedef struct timespec64 inode_timespec_t;
#else
typedef struct timespec inode_timespec_t;
#endif
static inline void
gethrestime(timestruc_t *now)
gethrestime(inode_timespec_t *ts)
{
*now = current_kernel_time();
#if defined(HAVE_INODE_TIMESPEC64_TIMES)
*ts = current_kernel_time64();
#else
*ts = current_kernel_time();
#endif
}
static inline time_t
@ -74,9 +87,9 @@ gethrestime_sec(void)
static inline hrtime_t
gethrtime(void)
{
struct timespec now;
getrawmonotonic(&now);
return (((hrtime_t)now.tv_sec * NSEC_PER_SEC) + now.tv_nsec);
struct timespec ts;
getrawmonotonic(&ts);
return (((hrtime_t)ts.tv_sec * NSEC_PER_SEC) + ts.tv_nsec);
}
#endif /* _SPL_TIME_H */

4
include/spl/sys/types.h
View File

@ -53,10 +53,6 @@ typedef unsigned long long rlim64_t;
typedef struct task_struct kthread_t;
typedef struct task_struct proc_t;
typedef struct timespec timestruc_t;
typedef struct timespec timespec_t;
typedef longlong_t hrtime_t;
typedef int id_t;
typedef short pri_t;
typedef short index_t;

6
include/spl/sys/vnode.h
View File

@ -128,9 +128,9 @@ typedef struct vattr {
long va_nodeid; /* node # */
uint32_t va_nlink; /* # links */
uint64_t va_size; /* file size */
struct timespec va_atime; /* last acc */
struct timespec va_mtime; /* last mod */
struct timespec va_ctime; /* last chg */
inode_timespec_t va_atime; /* last acc */
inode_timespec_t va_mtime; /* last mod */
inode_timespec_t va_ctime; /* last chg */
dev_t va_rdev; /* dev */
uint64_t va_nblocks; /* space used */
uint32_t va_blksize; /* block size */

2
include/sys/dmu.h
View File

@ -962,7 +962,7 @@ uint64_t dmu_objset_fsid_guid(objset_t *os);
/*
* Get the [cm]time for an objset's snapshot dir
*/
timestruc_t dmu_objset_snap_cmtime(objset_t *os);
inode_timespec_t dmu_objset_snap_cmtime(objset_t *os);
int dmu_objset_is_snapshot(objset_t *os);

2
include/sys/dmu_objset.h
View File

@ -211,7 +211,7 @@ int dmu_objset_find_dp(struct dsl_pool *dp, uint64_t ddobj,
int func(struct dsl_pool *, struct dsl_dataset *, void *),
void *arg, int flags);
void dmu_objset_evict_dbufs(objset_t *os);
timestruc_t dmu_objset_snap_cmtime(objset_t *os);
inode_timespec_t dmu_objset_snap_cmtime(objset_t *os);
/* called from dsl */
void dmu_objset_sync(objset_t *os, zio_t *zio, dmu_tx_t *tx);

4
include/sys/dsl_dir.h
View File

@ -108,7 +108,7 @@ struct dsl_dir {
/* Protected by dd_lock */
kmutex_t dd_lock;
list_t dd_props; /* list of dsl_prop_record_t's */
timestruc_t dd_snap_cmtime; /* last time snapshot namespace changed */
inode_timespec_t dd_snap_cmtime; /* last snapshot namespace change */
uint64_t dd_origin_txg;
/* gross estimate of space used by in-flight tx's */
@ -180,7 +180,7 @@ boolean_t dsl_dir_is_clone(dsl_dir_t *dd);
void dsl_dir_new_refreservation(dsl_dir_t *dd, struct dsl_dataset *ds,
uint64_t reservation, cred_t *cr, dmu_tx_t *tx);
void dsl_dir_snap_cmtime_update(dsl_dir_t *dd);
timestruc_t dsl_dir_snap_cmtime(dsl_dir_t *dd);
inode_timespec_t dsl_dir_snap_cmtime(dsl_dir_t *dd);
void dsl_dir_set_reservation_sync_impl(dsl_dir_t *dd, uint64_t value,
dmu_tx_t *tx);
void dsl_dir_zapify(dsl_dir_t *dd, dmu_tx_t *tx);

2
include/sys/spa_impl.h
View File

@ -224,7 +224,7 @@ struct spa {
uint64_t spa_freeze_txg; /* freeze pool at this txg */
uint64_t spa_load_max_txg; /* best initial ub_txg */
uint64_t spa_claim_max_txg; /* highest claimed birth txg */
timespec_t spa_loaded_ts; /* 1st successful open time */
inode_timespec_t spa_loaded_ts; /* 1st successful open time */
objset_t *spa_meta_objset; /* copy of dp->dp_meta_objset */
kmutex_t spa_evicting_os_lock; /* Evicting objset list lock */
list_t spa_evicting_os_list; /* Objsets being evicted. */

2
include/sys/xvattr.h
View File

@ -48,7 +48,7 @@
* Structure of all optional attributes.
*/
typedef struct xoptattr {
timestruc_t xoa_createtime; /* Create time of file */
inode_timespec_t xoa_createtime; /* Create time of file */
uint8_t xoa_archive;
uint8_t xoa_system;
uint8_t xoa_readonly;

9
include/sys/zfs_context.h
View File

@ -483,7 +483,7 @@ extern char *vn_dumpdir;
#define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */
typedef struct xoptattr {
timestruc_t xoa_createtime; /* Create time of file */
inode_timespec_t xoa_createtime; /* Create time of file */
uint8_t xoa_archive;
uint8_t xoa_system;
uint8_t xoa_readonly;
@ -596,13 +596,6 @@ extern void delay(clock_t ticks);
#define USEC_TO_TICK(usec) ((usec) / (MICROSEC / hz))
#define NSEC_TO_TICK(usec) ((usec) / (NANOSEC / hz))
#define gethrestime_sec() time(NULL)
#define gethrestime(t) \
do {\
(t)->tv_sec = gethrestime_sec();\
(t)->tv_nsec = 0;\
} while (0);
#define max_ncpus 64
#define boot_ncpus (sysconf(_SC_NPROCESSORS_ONLN))

33
include/sys/zfs_znode.h
View File

@ -291,19 +291,36 @@ zfs_inherit_projid(znode_t *dzp)
extern unsigned int zfs_object_mutex_size;
/* Encode ZFS stored time values from a struct timespec */
/*
* Encode ZFS stored time values from a struct timespec / struct timespec64.
*/
#define ZFS_TIME_ENCODE(tp, stmp) \
{ \
do { \
(stmp)[0] = (uint64_t)(tp)->tv_sec; \
(stmp)[1] = (uint64_t)(tp)->tv_nsec; \
}
} while (0)
/* Decode ZFS stored time values to a struct timespec */
#if defined(HAVE_INODE_TIMESPEC64_TIMES)
/*
* Decode ZFS stored time values to a struct timespec64
* 4.18 and newer kernels.
*/
#define ZFS_TIME_DECODE(tp, stmp) \
{ \
(tp)->tv_sec = (time_t)(stmp)[0]; \
(tp)->tv_nsec = (long)(stmp)[1]; \
}
do { \
(tp)->tv_sec = (time64_t)(stmp)[0]; \
(tp)->tv_nsec = (long)(stmp)[1]; \
} while (0)
#else
/*
* Decode ZFS stored time values to a struct timespec
* 4.17 and older kernels.
*/
#define ZFS_TIME_DECODE(tp, stmp) \
do { \
(tp)->tv_sec = (time_t)(stmp)[0]; \
(tp)->tv_nsec = (long)(stmp)[1]; \
} while (0)
#endif /* HAVE_INODE_TIMESPEC64_TIMES */
/*
* Timestamp defines

9
include/sys/zpl.h
View File

@ -188,4 +188,13 @@ zpl_dir_emit_dots(struct file *file, zpl_dir_context_t *ctx)
}
#endif /* HAVE_VFS_ITERATE */
/*
* Linux 4.18, inode times converted from timespec to timespec64.
*/
#if defined(HAVE_INODE_TIMESPEC64_TIMES)
#define zpl_inode_timespec_trunc(ts, gran) timespec64_trunc(ts, gran)
#else
#define zpl_inode_timespec_trunc(ts, gran) timespec_trunc(ts, gran)
#endif
#endif /* _SYS_ZPL_H */

2
lib/libspl/Makefile.am
View File

@ -18,8 +18,6 @@ noinst_LTLIBRARIES = libspl.la
USER_C = \
getexecname.c \
gethostid.c \
gethrtime.c \
gethrestime.c \
getmntany.c \
list.c \
mkdirp.c \

38
lib/libspl/gethrestime.c
View File

@ -1,38 +0,0 @@
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <time.h>
#include <sys/time.h>
void
gethrestime(timestruc_t *ts)
{
struct timeval tv;
gettimeofday(&tv, NULL);
ts->tv_sec = tv.tv_sec;
ts->tv_nsec = tv.tv_usec * NSEC_PER_USEC;
}

45
lib/libspl/gethrtime.c
View File

@ -1,45 +0,0 @@
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <time.h>
#include <sys/time.h>
#include <stdlib.h>
#include <stdio.h>
hrtime_t
gethrtime(void)
{
struct timespec ts;
int rc;
rc = clock_gettime(CLOCK_MONOTONIC, &ts);
if (rc) {
fprintf(stderr, "Error: clock_gettime() = %d\n", rc);
abort();
}
return ((((u_int64_t)ts.tv_sec) * NANOSEC) + ts.tv_nsec);
}

33
lib/libspl/include/sys/time.h
View File

@ -27,8 +27,9 @@
#ifndef _LIBSPL_SYS_TIME_H
#define _LIBSPL_SYS_TIME_H
#include_next <sys/time.h>
#include <time.h>
#include <sys/types.h>
#include_next <sys/time.h>
#ifndef SEC
#define SEC 1
@ -74,13 +75,33 @@
#define SEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / SEC))
#endif
typedef long long hrtime_t;
typedef struct timespec timestruc_t;
typedef struct timespec timespec_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;
}
extern hrtime_t gethrtime(void);
extern void gethrestime(timestruc_t *);
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 */

4
lib/libzpool/kernel.c
View File

@ -344,7 +344,7 @@ cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime)
{
int error;
struct timeval tv;
timestruc_t ts;
struct timespec ts;
clock_t delta;
delta = abstime - ddi_get_lbolt();
@ -379,7 +379,7 @@ cv_timedwait_hires(kcondvar_t *cv, kmutex_t *mp, hrtime_t tim, hrtime_t res,
{
int error;
struct timeval tv;
timestruc_t ts;
struct timespec ts;
hrtime_t delta;
ASSERT(flag == 0 || flag == CALLOUT_FLAG_ABSOLUTE);

2
module/zfs/dmu_objset.c
View File

@ -965,7 +965,7 @@ dmu_objset_evict_done(objset_t *os)
kmem_free(os, sizeof (objset_t));
}
timestruc_t
inode_timespec_t
dmu_objset_snap_cmtime(objset_t *os)
{
return (dsl_dir_snap_cmtime(os->os_dsl_dataset->ds_dir));

6
module/zfs/dsl_dir.c
View File

@ -2126,10 +2126,10 @@ dsl_dir_transfer_possible(dsl_dir_t *sdd, dsl_dir_t *tdd,
return (0);
}
timestruc_t
inode_timespec_t
dsl_dir_snap_cmtime(dsl_dir_t *dd)
{
timestruc_t t;
inode_timespec_t t;
mutex_enter(&dd->dd_lock);
t = dd->dd_snap_cmtime;
@ -2141,7 +2141,7 @@ dsl_dir_snap_cmtime(dsl_dir_t *dd)
void
dsl_dir_snap_cmtime_update(dsl_dir_t *dd)
{
timestruc_t t;
inode_timespec_t t;
gethrestime(&t);
mutex_enter(&dd->dd_lock);

2
module/zfs/fm.c
View File

@ -503,8 +503,8 @@ zfs_zevent_insert(zevent_t *ev)
int
zfs_zevent_post(nvlist_t *nvl, nvlist_t *detector, zevent_cb_t *cb)
{
inode_timespec_t tv;
int64_t tv_array[2];
timestruc_t tv;
uint64_t eid;
size_t nvl_size = 0;
zevent_t *ev;

2
module/zfs/zfs_ctldir.c
View File

@ -448,7 +448,7 @@ static struct inode *
zfsctl_inode_alloc(zfsvfs_t *zfsvfs, uint64_t id,
const struct file_operations *fops, const struct inode_operations *ops)
{
struct timespec now;
inode_timespec_t now;
struct inode *ip;
znode_t *zp;

4
module/zfs/zfs_vnops.c
View File

@ -3408,7 +3408,7 @@ top:
if (mask & (ATTR_MTIME | ATTR_SIZE)) {
ZFS_TIME_ENCODE(&vap->va_mtime, mtime);
ZTOI(zp)->i_mtime = timespec_trunc(vap->va_mtime,
ZTOI(zp)->i_mtime = zpl_inode_timespec_trunc(vap->va_mtime,
ZTOI(zp)->i_sb->s_time_gran);
SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL,
@ -3417,7 +3417,7 @@ top:
if (mask & (ATTR_CTIME | ATTR_SIZE)) {
ZFS_TIME_ENCODE(&vap->va_ctime, ctime);
ZTOI(zp)->i_ctime = timespec_trunc(vap->va_ctime,
ZTOI(zp)->i_ctime = zpl_inode_timespec_trunc(vap->va_ctime,
ZTOI(zp)->i_sb->s_time_gran);
SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL,
ctime, sizeof (ctime));

4
module/zfs/zfs_znode.c
View File

@ -698,7 +698,7 @@ zfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr,
uint64_t rdev = 0;
zfsvfs_t *zfsvfs = ZTOZSB(dzp);
dmu_buf_t *db;
timestruc_t now;
inode_timespec_t now;
uint64_t gen, obj;
int bonuslen;
int dnodesize;
@ -1403,7 +1403,7 @@ void
zfs_tstamp_update_setup(znode_t *zp, uint_t flag, uint64_t mtime[2],
uint64_t ctime[2])
{
timestruc_t now;
inode_timespec_t now;
gethrestime(&now);

5
module/zfs/zpl_inode.c
View File

@ -384,9 +384,10 @@ zpl_setattr(struct dentry *dentry, struct iattr *ia)
vap->va_mtime = ia->ia_mtime;
vap->va_ctime = ia->ia_ctime;
if (vap->va_mask & ATTR_ATIME)
ip->i_atime = timespec_trunc(ia->ia_atime,
if (vap->va_mask & ATTR_ATIME) {
ip->i_atime = zpl_inode_timespec_trunc(ia->ia_atime,
ip->i_sb->s_time_gran);
}
cookie = spl_fstrans_mark();
error = -zfs_setattr(ip, vap, 0, cr);