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Message-ID: <20080205191136.GA6234@joi>
Date: Tue, 5 Feb 2008 20:12:05 +0100
From: Marcin Slusarz <marcin.slusarz@...il.com>
To: Jan Kara <jack@...e.cz>
Cc: LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/6] udf: convert udf_stamp_to_time to return struct
timespec
On Tue, Feb 05, 2008 at 04:48:31PM +0100, Jan Kara wrote:
>
> Uh, oh. I guess you somehow mangled the ordering of patches. In this
> patch you revert what you've done in the previous patch. Otherwise I agree
> with the idea of the change...
No, the ordering is ok. Creation of udf_fill_inode_time was an intermediate
state in this cleanup. Every step is obvious and easy. When I tried to create
just one patch it didn't look so obvious, so I decided to send it in 4 parts.
>
> On Sun 03-02-08 19:36:08, marcin.slusarz@...il.com wrote:
> > Signed-off-by: Marcin Slusarz <marcin.slusarz@...il.com>
> > Cc: Jan Kara <jack@...e.cz>
> > ---
> > fs/udf/inode.c | 49 ++++++++++++++++++++++++++-----------------------
> > fs/udf/super.c | 9 ++-------
> > fs/udf/udfdecl.h | 4 ++--
> > fs/udf/udftime.c | 17 +++++++----------
> > 4 files changed, 37 insertions(+), 42 deletions(-)
> >
> > diff --git a/fs/udf/inode.c b/fs/udf/inode.c
> > index 2578677..252efe0 100644
> > --- a/fs/udf/inode.c
> > +++ b/fs/udf/inode.c
> > @@ -1151,20 +1151,6 @@ static void __udf_read_inode(struct inode *inode)
> > brelse(bh);
> > }
> >
> > -static void udf_fill_inode_time(struct timespec *tspec,
> > - const timestamp *tstamp,
> > - struct udf_sb_info *sbi)
> > -{
> > - time_t convtime;
> > - long convtime_usec;
> > - if (udf_stamp_to_time(&convtime, &convtime_usec,
> > - lets_to_cpu(*tstamp))) {
> > - tspec->tv_sec = convtime;
> > - tspec->tv_nsec = convtime_usec * 1000;
> > - } else
> > - *tspec = sbi->s_record_time;
> > -}
> > -
>
> > static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
> > {
> > struct fileEntry *fe;
> > @@ -1256,10 +1242,17 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
> > inode->i_blocks = le64_to_cpu(fe->logicalBlocksRecorded) <<
> > (inode->i_sb->s_blocksize_bits - 9);
> >
> > - udf_fill_inode_time(&inode->i_atime, &fe->accessTime, sbi);
> > - udf_fill_inode_time(&inode->i_mtime, &fe->modificationTime,
> > - sbi);
> > - udf_fill_inode_time(&inode->i_ctime, &fe->attrTime, sbi);
> > + if (!udf_stamp_to_time(&inode->i_atime,
> > + lets_to_cpu(fe->accessTime)))
> > + inode->i_atime = sbi->s_record_time;
> > +
> > + if (!udf_stamp_to_time(&inode->i_mtime,
> > + lets_to_cpu(fe->modificationTime)))
> > + inode->i_mtime = sbi->s_record_time;
> > +
> > + if (!udf_stamp_to_time(&inode->i_ctime,
> > + lets_to_cpu(fe->attrTime)))
> > + inode->i_ctime = sbi->s_record_time;
> >
> > iinfo->i_unique = le64_to_cpu(fe->uniqueID);
> > iinfo->i_lenEAttr = le32_to_cpu(fe->lengthExtendedAttr);
> > @@ -1269,11 +1262,21 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
> > inode->i_blocks = le64_to_cpu(efe->logicalBlocksRecorded) <<
> > (inode->i_sb->s_blocksize_bits - 9);
> >
> > - udf_fill_inode_time(&inode->i_atime, &efe->accessTime, sbi);
> > - udf_fill_inode_time(&inode->i_mtime, &efe->modificationTime,
> > - sbi);
> > - udf_fill_inode_time(&iinfo->i_crtime, &efe->createTime, sbi);
> > - udf_fill_inode_time(&inode->i_ctime, &efe->attrTime, sbi);
> > + if (!udf_stamp_to_time(&inode->i_atime,
> > + lets_to_cpu(efe->accessTime)))
> > + inode->i_atime = sbi->s_record_time;
> > +
> > + if (!udf_stamp_to_time(&inode->i_mtime,
> > + lets_to_cpu(efe->modificationTime)))
> > + inode->i_mtime = sbi->s_record_time;
> > +
> > + if (!udf_stamp_to_time(&iinfo->i_crtime,
> > + lets_to_cpu(efe->createTime)))
> > + iinfo->i_crtime = sbi->s_record_time;
> > +
> > + if (!udf_stamp_to_time(&inode->i_ctime,
> > + lets_to_cpu(efe->attrTime)))
> > + inode->i_ctime = sbi->s_record_time;
> >
> > iinfo->i_unique = le64_to_cpu(efe->uniqueID);
> > iinfo->i_lenEAttr = le32_to_cpu(efe->lengthExtendedAttr);
> > diff --git a/fs/udf/super.c b/fs/udf/super.c
> > index 0dcee12..9f565a9 100644
> > --- a/fs/udf/super.c
> > +++ b/fs/udf/super.c
> > @@ -909,24 +909,19 @@ static int udf_find_fileset(struct super_block *sb,
> > static void udf_load_pvoldesc(struct super_block *sb, struct buffer_head *bh)
> > {
> > struct primaryVolDesc *pvoldesc;
> > - time_t recording;
> > - long recording_usec;
> > struct ustr instr;
> > struct ustr outstr;
> >
> > pvoldesc = (struct primaryVolDesc *)bh->b_data;
> >
> > - if (udf_stamp_to_time(&recording, &recording_usec,
> > + if (udf_stamp_to_time(&UDF_SB(sb)->s_record_time,
> > lets_to_cpu(pvoldesc->recordingDateAndTime))) {
> > kernel_timestamp ts;
> > ts = lets_to_cpu(pvoldesc->recordingDateAndTime);
> > - udf_debug("recording time %ld/%ld, %04u/%02u/%02u"
> > + udf_debug("recording time %04u/%02u/%02u"
> > " %02u:%02u (%x)\n",
> > - recording, recording_usec,
> > ts.year, ts.month, ts.day, ts.hour,
> > ts.minute, ts.typeAndTimezone);
> > - UDF_SB(sb)->s_record_time.tv_sec = recording;
> > - UDF_SB(sb)->s_record_time.tv_nsec = recording_usec * 1000;
> > }
> >
> > if (!udf_build_ustr(&instr, pvoldesc->volIdent, 32))
> > diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
> > index 375be1b..508be85 100644
> > --- a/fs/udf/udfdecl.h
> > +++ b/fs/udf/udfdecl.h
> > @@ -204,7 +204,7 @@ extern short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
> > extern uint16_t udf_crc(const uint8_t *, uint32_t, uint16_t);
> >
> > /* udftime.c */
> > -extern time_t *udf_stamp_to_time(time_t *, long *, kernel_timestamp);
> > -extern kernel_timestamp *udf_time_to_stamp(kernel_timestamp *, struct timespec);
> > +extern struct timespec *udf_stamp_to_time(struct timespec *dest, kernel_timestamp src);
> > +extern kernel_timestamp *udf_time_to_stamp(kernel_timestamp *dest, struct timespec src);
> >
> > #endif /* __UDF_DECL_H */
> > diff --git a/fs/udf/udftime.c b/fs/udf/udftime.c
> > index ce59573..12fae6c 100644
> > --- a/fs/udf/udftime.c
> > +++ b/fs/udf/udftime.c
> > @@ -85,7 +85,7 @@ extern struct timezone sys_tz;
> > #define SECS_PER_HOUR (60 * 60)
> > #define SECS_PER_DAY (SECS_PER_HOUR * 24)
> >
> > -time_t *udf_stamp_to_time(time_t *dest, long *dest_usec, kernel_timestamp src)
> > +struct timespec *udf_stamp_to_time(struct timespec *dest, kernel_timestamp src)
> > {
> > int yday;
> > uint8_t type = src.typeAndTimezone >> 12;
> > @@ -97,23 +97,20 @@ time_t *udf_stamp_to_time(time_t *dest, long *dest_usec, kernel_timestamp src)
> > offset = (offset >> 4);
> > if (offset == -2047) /* unspecified offset */
> > offset = 0;
> > - } else {
> > + } else
> > offset = 0;
> > - }
> >
> > if ((src.year < EPOCH_YEAR) ||
> > (src.year >= EPOCH_YEAR + MAX_YEAR_SECONDS)) {
> > - *dest = -1;
> > - *dest_usec = -1;
> > return NULL;
> > }
> > - *dest = year_seconds[src.year - EPOCH_YEAR];
> > - *dest -= offset * 60;
> > + dest->tv_sec = year_seconds[src.year - EPOCH_YEAR];
> > + dest->tv_sec -= offset * 60;
> >
> > yday = ((__mon_yday[__isleap(src.year)][src.month - 1]) + src.day - 1);
> > - *dest += (((yday * 24) + src.hour) * 60 + src.minute) * 60 + src.second;
> > - *dest_usec = src.centiseconds * 10000 +
> > - src.hundredsOfMicroseconds * 100 + src.microseconds;
> > + dest->tv_sec += (((yday * 24) + src.hour) * 60 + src.minute) * 60 + src.second;
> > + dest->tv_nsec = 1000 * (src.centiseconds * 10000 +
> > + src.hundredsOfMicroseconds * 100 + src.microseconds);
> > return dest;
> > }
> >
> > --
> > 1.5.3.7
>
> Honza
> --
> Jan Kara <jack@...e.cz>
> SUSE Labs, CR
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