Merge Lite2 changes (rather bigish, the dump/restore folks should check)
This commit is contained in:
peter
parent
b44b4b434e
commit
9fd0eac987
110
sbin/dump/dump.8
110
sbin/dump/dump.8
@ -30,10 +30,10 @@
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)dump.8 8.1 (Berkeley) 6/16/93
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.\" $Id$
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.\" @(#)dump.8 8.3 (Berkeley) 5/1/95
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.\" $Id: dump.8,v 1.12 1997/02/22 14:32:16 peter Exp $
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.\"
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.Dd June 16, 1993
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.Dd May 1, 1995
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.Dt DUMP 8
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.Os BSD 4
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.Sh NAME
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@ -41,8 +41,23 @@
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.Nd filesystem backup
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.Sh SYNOPSIS
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.Nm dump
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.Op Cm 0123456789BTWabcdfhnsu Op Ar argument ...
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.Op Ar filesystem
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.Op Fl 0123456789acnu
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.Op Fl B Ar records
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.Op Fl b Ar blocksize
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.Op Fl d Ar density
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.Op Fl f Ar file
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.Op Fl h Ar level
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.Op Fl s Ar feet
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.Op Fl T Ar date
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.Ar filesystem
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.Nm dump
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.Op Fl W Li \&| Fl w
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.Pp
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.in -\\n(iSu
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(The
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.Bx 4.3
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option syntax is implemented for backward compatibility, but
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is not documented here.)
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.Sh DESCRIPTION
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.Nm Dump
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examines files
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@ -51,7 +66,7 @@ and determines which files
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need to be backed up. These files
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are copied to the given disk, tape or other
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storage medium for safe keeping (see the
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.Cm f
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.Fl f
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option below for doing remote backups).
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A dump that is larger than the output medium is broken into
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multiple volumes.
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@ -70,26 +85,26 @@ By default, the same output file name is used for each volume
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after prompting the operator to change media.
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.Pp
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The following options are supported by
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.Nm dump:
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.Bl -tag -width 4n
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.It Cm 0\-9
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.Nm dump :
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.Bl -tag -width Ds
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.It Fl 0\-9
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Dump levels.
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A level 0, full backup,
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guarantees the entire file system is copied
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(but see also the
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.Cm h
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.Fl h
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option below).
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A level number above 0,
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incremental backup,
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tells dump to
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copy all files new or modified since the
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last dump of the same or lower level. The default
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level is 9.
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.It Cm B Ar records
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last dump of the same or lower level.
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The default level is 9.
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.It Fl B Ar records
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The number of dump records per volume.
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This option overrides the calculation of tape size
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based on length and density.
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.It Cm a
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.It Fl a
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.Dq auto-size .
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Bypass all tape length considerations, and enforce writing
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until an end-of-media indication is returned. This fits best
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@ -97,12 +112,12 @@ for most modern tape drives. Use of this option is particularly
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recommended when appending to an existing tape, or using a tape
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drive with hardware compression (where you can never be sure about
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the compression ratio).
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.It Cm b Ar blocksize
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.It Fl b Ar blocksize
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The number of kilobytes per dump record.
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.It Cm c
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.It Fl c
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Change the defaults for use with a cartridge tape drive, with a density
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of 8000 bpi, and a length of 1700 feet.
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.It Cm h Ar level
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.It Fl h Ar level
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Honor the user
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.Dq nodump
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flag
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@ -112,7 +127,11 @@ only for dumps at or above the given
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The default honor level is 1,
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so that incremental backups omit such files
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but full backups retain them.
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.It Cm f Ar file
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.It Fl d Ar density
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Set tape density to
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.Ar density .
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The default is 1600BPI.
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.It Fl f Ar file
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Write the backup to
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.Ar file ;
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.Ar file
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@ -145,11 +164,7 @@ program is
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.Pa /etc/rmt ;
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this can be overridden by the environment variable
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.Ev RMT .
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.It Cm d Ar density
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Set tape density to
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.Ar density .
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The default is 1600BPI.
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.It Cm n
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.It Fl n
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Whenever
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.Nm dump
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requires operator attention,
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@ -157,7 +172,7 @@ notify all operators in the group
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.Dq operator
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by means similar to a
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.Xr wall 1 .
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.It Cm s Ar feet
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.It Fl s Ar feet
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Attempt to calculate the amount of tape needed
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at a particular density.
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If this amount is exceeded,
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@ -165,7 +180,21 @@ If this amount is exceeded,
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prompts for a new tape.
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It is recommended to be a bit conservative on this option.
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The default tape length is 2300 feet.
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.It Cm u
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.ne 1i
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.It Fl T Ar date
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Use the specified date as the starting time for the dump
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instead of the time determined from looking in
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.Pa /etc/dumpdates .
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The format of date is the same as that of
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.Xr ctime 3 .
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This option is useful for automated dump scripts that wish to
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dump over a specific period of time.
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The
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.Fl T
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option is mutually exclusive from the
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.Fl u
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option.
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.It Fl u
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Update the file
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.Pa /etc/dumpdates
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after a successful dump.
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@ -183,20 +212,7 @@ The file
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.Pa /etc/dumpdates
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may be edited to change any of the fields,
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if necessary.
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.It Cm T Ar date
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Use the specified date as the starting time for the dump
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instead of the time determined from looking in
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.Pa /etc/dumpdates .
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The format of date is the same as that of
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.Xr ctime 3 .
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This option is useful for automated dump scripts that wish to
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dump over a specific period of time.
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The
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.Cm T
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option is mutually exclusive from the
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.Cm u
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option.
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.It Cm W
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.It Fl W
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.Nm Dump
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tells the operator what file systems need to be dumped.
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This information is gleaned from the files
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@ -204,7 +220,7 @@ This information is gleaned from the files
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and
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.Pa /etc/fstab .
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The
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.Cm W
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.Fl W
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option causes
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.Nm dump
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to print out, for each file system in
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@ -212,11 +228,11 @@ to print out, for each file system in
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the most recent dump date and level,
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and highlights those file systems that should be dumped.
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If the
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.Cm W
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.Fl W
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option is set, all other options are ignored, and
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.Nm dump
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exits immediately.
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.It Cm w
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.It Fl w
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Is like W, but prints only those filesystems which need to be dumped.
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.El
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.Pp
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@ -228,7 +244,7 @@ tape write error,
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tape open error or
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disk read error (if there are more than a threshold of 32).
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In addition to alerting all operators implied by the
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.Cm n
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.Fl n
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key,
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.Nm dump
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interacts with the operator on
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@ -279,7 +295,7 @@ to minimize the number of tapes follows:
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.It
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Always start with a level 0 backup, for example:
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.Bd -literal -offset indent
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/sbin/dump 0uf /dev/nrst0 /usr/src
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/sbin/dump -0u -f /dev/nrst0 /usr/src
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.Ed
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.Pp
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This should be done at set intervals, say once a month or once every two months,
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@ -334,8 +350,8 @@ Dump exits with zero status on success.
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Startup errors are indicated with an exit code of 1;
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abnormal termination is indicated with an exit code of 3.
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.Sh BUGS
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.Pp
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Fewer than 32 read errors on the filesystem are ignored.
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.Pp
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Each reel requires a new process, so parent processes for
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reels already written just hang around until the entire tape
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is written.
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@ -349,9 +365,9 @@ will prevent this from happening.
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.Pp
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.Nm Dump
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with the
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.Cm W
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.Fl W
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or
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.Cm w
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.Fl w
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options does not report filesystems that have never been recorded
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in
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.Pa /etc/dumpdates ,
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@ -30,7 +30,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)dump.h 8.1 (Berkeley) 6/5/93
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* @(#)dump.h 8.2 (Berkeley) 4/28/95
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*/
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#define MAXINOPB (MAXBSIZE / sizeof(struct dinode))
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@ -186,8 +186,9 @@ void sig __P((int signo));
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*/
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#ifdef COMPAT
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#include <sys/file.h>
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extern char *index(), *rindex(), *strdup();
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extern char *ctime();
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#define strchr(a,b) index(a,b)
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#define strrchr(a,b) rindex(a,b)
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extern char *strdup(), *ctime();
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extern int read(), write();
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extern int errno;
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#endif
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@ -32,7 +32,7 @@
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*/
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#ifndef lint
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static char sccsid[] = "@(#)dumprmt.c 8.1 (Berkeley) 6/5/93";
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static char sccsid[] = "@(#)dumprmt.c 8.3 (Berkeley) 4/28/95";
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#endif /* not lint */
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#include <sys/param.h>
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@ -55,6 +55,7 @@ static char sccsid[] = "@(#)dumprmt.c 8.1 (Berkeley) 6/5/93";
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#include <protocols/dumprestore.h>
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#include <ctype.h>
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#include <err.h>
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#include <netdb.h>
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#include <pwd.h>
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#include <signal.h>
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@ -157,7 +158,7 @@ rmtgetconn()
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exit(X_ABORT);
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}
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}
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if ((cp = index(rmtpeer, '@')) != NULL) {
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if ((cp = strchr(rmtpeer, '@')) != NULL) {
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tuser = rmtpeer;
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*cp = '\0';
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if (!okname(tuser))
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271
sbin/dump/main.c
271
sbin/dump/main.c
@ -38,7 +38,7 @@ static char copyright[] =
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 4/15/94";
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static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/1/95";
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#endif /* not lint */
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#include <sys/param.h>
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@ -49,23 +49,22 @@ static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 4/15/94";
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#include <ufs/inode.h>
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#include <ufs/fs.h>
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#else
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#include <ufs/ffs/fs.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.h>
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#endif
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#include <protocols/dumprestore.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <fstab.h>
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#include <signal.h>
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#include <stdio.h>
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#ifdef __STDC__
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#endif
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#include "dump.h"
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#include "pathnames.h"
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@ -84,20 +83,21 @@ long dev_bsize = 1; /* recalculated below */
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long blocksperfile; /* output blocks per file */
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char *host = NULL; /* remote host (if any) */
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static long numarg __P((int, char *, long, long, int *, char ***));
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static void missingarg __P((int, char *)) __dead2;
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static long numarg __P((char *, long, long));
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static void obsolete __P((int *, char **[]));
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static void usage __P((void));
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int
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main(argc, argv)
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int argc;
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char **argv;
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char *argv[];
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{
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register ino_t ino;
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register int dirty;
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register struct dinode *dp;
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register struct fstab *dt;
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register char *map;
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register char *cp;
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register int ch;
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int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
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ino_t maxino;
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@ -112,62 +112,31 @@ main(argc, argv)
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if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
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quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
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level = '0';
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if (argc == 1) {
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(void) fprintf(stderr, "Must specify a key.\n");
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Exit(X_ABORT);
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}
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argv++;
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argc -= 2;
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for (cp = *argv++; cp != NULL && *cp != '\0'; cp++) {
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switch (*cp) {
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case '-':
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if (argc < 2)
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usage();
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obsolete(&argc, &argv);
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while ((ch = getopt(argc, argv, "0123456789B:b:cd:f:h:ns:T:uWw")) != -1)
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switch (ch) {
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/* dump level */
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case '0': case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9':
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level = ch;
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break;
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case 'w':
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lastdump('w'); /* tell us only what has to be done */
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exit(0);
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case 'W': /* what to do */
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lastdump('W'); /* tell us state of what is done */
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exit(0); /* do nothing else */
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case 'f': /* output file */
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if (argc < 1)
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missingarg('f', "output file");
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tape = *argv++;
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argc--;
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case 'a': /* `auto-size', Write to EOM. */
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unlimited = 1;
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break;
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case 'd': /* density, in bits per inch */
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density = numarg('d', "density",
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10L, 327670L, &argc, &argv) / 10;
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if (density >= 625 && !bflag)
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ntrec = HIGHDENSITYTREC;
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break;
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case 's': /* tape size, feet */
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tsize = numarg('s', "size",
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1L, 0L, &argc, &argv) * 12 * 10;
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break;
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case 'T': /* time of last dump */
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if (argc < 1)
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missingarg('T', "time of last dump");
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spcl.c_ddate = unctime(*argv);
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if (spcl.c_ddate < 0) {
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(void)fprintf(stderr, "bad time \"%s\"\n",
|
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*argv);
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exit(X_ABORT);
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}
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Tflag = 1;
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lastlevel = '?';
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argc--;
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argv++;
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case 'B': /* blocks per output file */
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blocksperfile = numarg("number of blocks per file",
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1L, 0L);
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break;
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case 'b': /* blocks per tape write */
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ntrec = numarg('b', "number of blocks per write",
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1L, 1000L, &argc, &argv);
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ntrec = numarg("number of blocks per write",
|
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1L, 1000L);
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/*
|
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* XXX
|
||||
* physio(9) currently slices all requests to
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@ -184,43 +153,60 @@ main(argc, argv)
|
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}
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break;
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|
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case 'B': /* blocks per output file */
|
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blocksperfile = numarg('B', "number of blocks per file",
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1L, 0L, &argc, &argv);
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break;
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||||
|
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case 'c': /* Tape is cart. not 9-track */
|
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cartridge = 1;
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break;
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|
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case 'a': /* `auto-size', Write to EOM. */
|
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unlimited = 1;
|
||||
case 'd': /* density, in bits per inch */
|
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density = numarg("density", 10L, 327670L) / 10;
|
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if (density >= 625 && !bflag)
|
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ntrec = HIGHDENSITYTREC;
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break;
|
||||
|
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/* dump level */
|
||||
case '0': case '1': case '2': case '3': case '4':
|
||||
case '5': case '6': case '7': case '8': case '9':
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level = *cp;
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case 'f': /* output file */
|
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tape = optarg;
|
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break;
|
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|
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case 'u': /* update /etc/dumpdates */
|
||||
uflag = 1;
|
||||
case 'h':
|
||||
honorlevel = numarg("honor level", 0L, 10L);
|
||||
break;
|
||||
|
||||
case 'n': /* notify operators */
|
||||
notify = 1;
|
||||
break;
|
||||
|
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case 'h':
|
||||
honorlevel = numarg('h', "honor level",
|
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0L, 10L, &argc, &argv);
|
||||
case 's': /* tape size, feet */
|
||||
tsize = numarg("tape size", 1L, 0L) * 12 * 10;
|
||||
break;
|
||||
|
||||
case 'T': /* time of last dump */
|
||||
spcl.c_ddate = unctime(optarg);
|
||||
if (spcl.c_ddate < 0) {
|
||||
(void)fprintf(stderr, "bad time \"%s\"\n",
|
||||
optarg);
|
||||
exit(X_ABORT);
|
||||
}
|
||||
Tflag = 1;
|
||||
lastlevel = '?';
|
||||
argc--;
|
||||
argv++;
|
||||
break;
|
||||
|
||||
case 'u': /* update /etc/dumpdates */
|
||||
uflag = 1;
|
||||
break;
|
||||
|
||||
case 'W': /* what to do */
|
||||
case 'w':
|
||||
lastdump(ch);
|
||||
exit(0); /* do nothing else */
|
||||
|
||||
default:
|
||||
(void)fprintf(stderr, "bad key '%c'\n", *cp);
|
||||
exit(X_ABORT);
|
||||
usage();
|
||||
}
|
||||
}
|
||||
argc -= optind;
|
||||
argv += optind;
|
||||
|
||||
if (argc < 1) {
|
||||
(void)fprintf(stderr, "Must specify disk or filesystem\n");
|
||||
exit(X_ABORT);
|
||||
@ -263,9 +249,9 @@ main(argc, argv)
|
||||
tsize = cartridge ? 1700L*120L : 2300L*120L;
|
||||
}
|
||||
|
||||
if (index(tape, ':')) {
|
||||
if (strchr(tape, ':')) {
|
||||
host = tape;
|
||||
tape = index(host, ':');
|
||||
tape = strchr(host, ':');
|
||||
*tape++ = '\0';
|
||||
#ifdef RDUMP
|
||||
if (index(tape, '\n')) {
|
||||
@ -492,48 +478,33 @@ main(argc, argv)
|
||||
/* NOTREACHED */
|
||||
}
|
||||
|
||||
static void
|
||||
usage()
|
||||
{
|
||||
|
||||
(void)fprintf(stderr, "usage: dump [-0123456789cnu] [-B records] [-b blocksize] [-d density] [-f file]\n [-h level] [-s feet] [-T date] filesystem\n");
|
||||
(void)fprintf(stderr, " dump [-W | -w]\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
/*
|
||||
* Pick up a numeric argument. It must be nonnegative and in the given
|
||||
* range (except that a vmax of 0 means unlimited).
|
||||
*/
|
||||
static long
|
||||
numarg(letter, meaning, vmin, vmax, pargc, pargv)
|
||||
int letter;
|
||||
numarg(meaning, vmin, vmax)
|
||||
char *meaning;
|
||||
long vmin, vmax;
|
||||
int *pargc;
|
||||
char ***pargv;
|
||||
{
|
||||
register char *p;
|
||||
char *p;
|
||||
long val;
|
||||
char *str;
|
||||
|
||||
if (--*pargc < 0)
|
||||
missingarg(letter, meaning);
|
||||
str = *(*pargv)++;
|
||||
for (p = str; *p; p++)
|
||||
if (!isdigit(*p))
|
||||
goto bad;
|
||||
val = atol(str);
|
||||
val = strtol(optarg, &p, 10);
|
||||
if (*p)
|
||||
errx(1, "illegal %s -- %s", meaning, optarg);
|
||||
if (val < vmin || (vmax && val > vmax))
|
||||
goto bad;
|
||||
errx(1, "%s must be between %ld and %ld", meaning, vmin, vmax);
|
||||
return (val);
|
||||
|
||||
bad:
|
||||
(void)fprintf(stderr, "bad '%c' (%s) value \"%s\"\n",
|
||||
letter, meaning, str);
|
||||
exit(X_ABORT);
|
||||
}
|
||||
|
||||
static void
|
||||
missingarg(letter, meaning)
|
||||
int letter;
|
||||
char *meaning;
|
||||
{
|
||||
|
||||
(void)fprintf(stderr, "The '%c' flag (%s) requires an argument\n",
|
||||
letter, meaning);
|
||||
exit(X_ABORT);
|
||||
}
|
||||
|
||||
void
|
||||
@ -568,7 +539,7 @@ rawname(cp)
|
||||
char *cp;
|
||||
{
|
||||
static char rawbuf[MAXPATHLEN];
|
||||
char *dp = rindex(cp, '/');
|
||||
char *dp = strrchr(cp, '/');
|
||||
|
||||
if (dp == NULL)
|
||||
return (NULL);
|
||||
@ -581,17 +552,77 @@ rawname(cp)
|
||||
return (rawbuf);
|
||||
}
|
||||
|
||||
#ifdef sunos
|
||||
const char *
|
||||
strerror(errnum)
|
||||
int errnum;
|
||||
/*
|
||||
* obsolete --
|
||||
* Change set of key letters and ordered arguments into something
|
||||
* getopt(3) will like.
|
||||
*/
|
||||
static void
|
||||
obsolete(argcp, argvp)
|
||||
int *argcp;
|
||||
char **argvp[];
|
||||
{
|
||||
extern int sys_nerr;
|
||||
extern const char *const sys_errlist[];
|
||||
int argc, flags;
|
||||
char *ap, **argv, *flagsp, **nargv, *p;
|
||||
|
||||
if (errnum < sys_nerr)
|
||||
return (sys_errlist[errnum]);
|
||||
else
|
||||
return ("bogus errno in strerror");
|
||||
/* Setup. */
|
||||
argv = *argvp;
|
||||
argc = *argcp;
|
||||
|
||||
/* Return if no arguments or first argument has leading dash. */
|
||||
ap = argv[1];
|
||||
if (argc == 1 || *ap == '-')
|
||||
return;
|
||||
|
||||
/* Allocate space for new arguments. */
|
||||
if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
|
||||
(p = flagsp = malloc(strlen(ap) + 2)) == NULL)
|
||||
err(1, NULL);
|
||||
|
||||
*nargv++ = *argv;
|
||||
argv += 2;
|
||||
|
||||
for (flags = 0; *ap; ++ap) {
|
||||
switch (*ap) {
|
||||
case 'a':
|
||||
case 'B':
|
||||
case 'b':
|
||||
case 'd':
|
||||
case 'f':
|
||||
case 'h':
|
||||
case 's':
|
||||
case 'T':
|
||||
if (*argv == NULL) {
|
||||
warnx("option requires an argument -- %c", *ap);
|
||||
usage();
|
||||
}
|
||||
if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
|
||||
err(1, NULL);
|
||||
nargv[0][0] = '-';
|
||||
nargv[0][1] = *ap;
|
||||
(void)strcpy(&nargv[0][2], *argv);
|
||||
++argv;
|
||||
++nargv;
|
||||
break;
|
||||
default:
|
||||
if (!flags) {
|
||||
*p++ = '-';
|
||||
flags = 1;
|
||||
}
|
||||
*p++ = *ap;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* Terminate flags. */
|
||||
if (flags) {
|
||||
*p = '\0';
|
||||
*nargv++ = flagsp;
|
||||
}
|
||||
|
||||
/* Copy remaining arguments. */
|
||||
while (*nargv++ = *argv++);
|
||||
|
||||
/* Update argument count. */
|
||||
*argcp = nargv - *argvp - 1;
|
||||
}
|
||||
#endif
|
||||
|
||||
@ -32,7 +32,7 @@
|
||||
*/
|
||||
|
||||
#ifndef lint
|
||||
static char sccsid[] = "@(#)tape.c 8.2 (Berkeley) 3/17/94";
|
||||
static char sccsid[] = "@(#)tape.c 8.4 (Berkeley) 5/1/95";
|
||||
#endif /* not lint */
|
||||
|
||||
#include <sys/param.h>
|
||||
@ -45,8 +45,8 @@ static char sccsid[] = "@(#)tape.c 8.2 (Berkeley) 3/17/94";
|
||||
#include <ufs/fs.h>
|
||||
#include <ufs/inode.h>
|
||||
#else
|
||||
#include <ufs/ffs/fs.h>
|
||||
#include <ufs/ufs/dinode.h>
|
||||
#include <ufs/ffs/fs.h>
|
||||
#endif
|
||||
|
||||
#include <protocols/dumprestore.h>
|
||||
@ -584,10 +584,10 @@ startnewtape(top)
|
||||
* the remaining names for subsequent volumes.
|
||||
*/
|
||||
tapeno++; /* current tape sequence */
|
||||
if (nexttape || index(tape, ',')) {
|
||||
if (nexttape || strchr(tape, ',')) {
|
||||
if (nexttape && *nexttape)
|
||||
tape = nexttape;
|
||||
if ((p = index(tape, ',')) != NULL) {
|
||||
if ((p = strchr(tape, ',')) != NULL) {
|
||||
*p = '\0';
|
||||
nexttape = p + 1;
|
||||
} else
|
||||
|
||||
@ -32,7 +32,7 @@
|
||||
*/
|
||||
|
||||
#ifndef lint
|
||||
static char sccsid[] = "@(#)traverse.c 8.2 (Berkeley) 9/23/93";
|
||||
static char sccsid[] = "@(#)traverse.c 8.7 (Berkeley) 6/15/95";
|
||||
#endif /* not lint */
|
||||
|
||||
#include <sys/param.h>
|
||||
@ -45,9 +45,9 @@ static char sccsid[] = "@(#)traverse.c 8.2 (Berkeley) 9/23/93";
|
||||
#include <ufs/fsdir.h>
|
||||
#include <ufs/inode.h>
|
||||
#else
|
||||
#include <ufs/ffs/fs.h>
|
||||
#include <ufs/ufs/dir.h>
|
||||
#include <ufs/ufs/dinode.h>
|
||||
#include <ufs/ffs/fs.h>
|
||||
#endif
|
||||
|
||||
#include <protocols/dumprestore.h>
|
||||
@ -362,8 +362,7 @@ dumpino(dp, ino)
|
||||
spcl.c_addr[0] = 1;
|
||||
spcl.c_count = 1;
|
||||
writeheader(ino);
|
||||
bcopy((caddr_t)dp->di_shortlink, buf,
|
||||
(u_long)dp->di_size);
|
||||
memmove(buf, dp->di_shortlink, (u_long)dp->di_size);
|
||||
buf[dp->di_size] = '\0';
|
||||
writerec(buf, 0);
|
||||
return;
|
||||
@ -418,7 +417,7 @@ dmpindir(ino, blk, ind_level, size)
|
||||
if (blk != 0)
|
||||
bread(fsbtodb(sblock, blk), (char *)idblk, (int) sblock->fs_bsize);
|
||||
else
|
||||
bzero((char *)idblk, (int)sblock->fs_bsize);
|
||||
memset(idblk, 0, (int)sblock->fs_bsize);
|
||||
if (ind_level <= 0) {
|
||||
if (*size < NINDIR(sblock) * sblock->fs_bsize)
|
||||
cnt = howmany(*size, sblock->fs_fsize);
|
||||
@ -592,7 +591,7 @@ bread(blkno, buf, size)
|
||||
/*
|
||||
* Zero buffer, then try to read each sector of buffer separately.
|
||||
*/
|
||||
bzero(buf, size);
|
||||
memset(buf, 0, size);
|
||||
for (i = 0; i < size; i += dev_bsize, buf += dev_bsize, blkno++) {
|
||||
if (lseek(diskfd, ((off_t)blkno << dev_bshift), 0) !=
|
||||
((off_t)blkno << dev_bshift))
|
||||
|
||||
Loading…
Reference in New Issue
Block a user