Teach disklabel(8) about different hardware architectures.
This is aimed at creating floppies during cross-releases. For different endianness machines, a tool like bswapfs(8) is necessary to make the generated floppies readable on the target machine. While here, fixed unaligned access on Alphas. Tested on: i386, alpha
This commit is contained in:
Ruslan Ermilov
parent
d647b74e54
commit
bc33ea1acc
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=112307
@ -48,31 +48,37 @@
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.Nm
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.Fl w
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.Op Fl nr
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.Ar disk disktype Ns | Ns Cm auto
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.Op Fl m Ar machine
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.Ar disk type
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.Op Ar packid
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.Nm
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.Fl e
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.Op Fl nr
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.Op Fl m Ar machine
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.Ar disk
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.Nm
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.Fl R
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.Op Fl nr
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.Op Fl m Ar machine
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.Ar disk protofile
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.Pp
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.Nm
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.Fl B
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.Op Fl b Ar boot
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.Op Fl m Ar machine
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.Ar disk
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.Nm
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.Fl w B
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.Op Fl n
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.Op Fl b Ar boot
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.Ar disk disktype Ns | Ns Cm auto
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.Op Fl m Ar machine
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.Ar disk type
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.Op Ar packid
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.Nm
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.Fl R B
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.Op Fl n
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.Op Fl b Ar boot
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.Op Fl m Ar machine
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.Ar disk protofile
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.Sh DESCRIPTION
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The
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@ -167,7 +173,8 @@ To write a standard label, use the form
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.Nm
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.Fl w
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.Op Fl nr
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.Ar disk disktype Ns | Ns Cm auto
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.Op Fl m Ar machine
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.Ar disk type
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.Op Ar packid
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.Pp
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The required arguments to
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@ -187,6 +194,13 @@ The
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.Ar packid
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must be quoted if it contains blanks.
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.Pp
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If the
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.Fl m
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option is given, then label will be written so that
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it is understood by the target
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.Ar machine ;
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defaults to the current hardware architecture.
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.Pp
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If
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.Fl n
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is used, no data will be written to the device, and instead the
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@ -199,7 +213,7 @@ will be written directly.
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A side-effect of this is that any existing bootstrap code will be overwritten
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and the disk rendered unbootable.
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See the boot options below for a method of
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writing the label and the bootstrap at the same time.
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writing the and the bootstrap at the same time.
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If
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.Fl r
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is not specified,
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@ -212,7 +226,7 @@ In either case, the kernel's in-core label is replaced.
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.Pp
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For a virgin disk that is not known to
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.Xr disktab 5 ,
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.Ar disktype
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.Ar type
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can be specified as
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.Cm auto .
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In this case, the driver is requested to produce a virgin label for the
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@ -270,6 +284,7 @@ To edit an existing disk label, use the form
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.Nm
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.Fl e
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.Op Fl nr
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.Op Fl m Ar machine
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.Ar disk
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.Pp
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This command reads the label from the in-core kernel copy, or directly from the
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@ -288,6 +303,14 @@ When the editor terminates, the label file is used to rewrite the disk label.
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Existing bootstrap code is unchanged regardless of whether
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.Fl r
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was specified.
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.Pp
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If the
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.Fl m
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option is given, then the label will be written so that
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it is understood by the target
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.Ar machine ;
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defaults to the current hardware architecture.
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.Pp
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If
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.Fl n
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is used, no data will be written to the device, and instead the
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@ -300,6 +323,7 @@ To restore a disk label from a file, use the form
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.Nm
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.Fl R
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.Op Fl nr
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.Op Fl m Ar machine
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.Ar disk protofile
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.Pp
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.Nm
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@ -317,6 +341,14 @@ clobbered if
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is specified, and will be unaffected otherwise.
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See the boot options below for a
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method of restoring the label and writing the bootstrap at the same time.
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.Pp
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If the
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.Fl m
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option is given, then the label will be written so that
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it is understood by the target
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.Ar machine ;
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defaults to the current hardware architecture.
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.Pp
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If
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.Fl n
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is used, no data will be written to the device, and instead the
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@ -345,6 +377,7 @@ on the base disk should probably be updated; see
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.Nm
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.Fl B
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.Op Fl b Ar boot
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.Op Fl m Ar machine
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.Ar disk
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.Pp
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This form installs the bootstrap only.
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@ -357,11 +390,18 @@ disk.
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This command is typically run on a slice such as
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.Pa da0s1 .
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.Pp
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The
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.Fl m
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option should be specified if the label was
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created for a different hardware architecture,
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.Ar machine .
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.Pp
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.Nm
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.Fl w B
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.Op Fl n
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.Op Fl b Ar boot
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.Ar disk disktype Ns | Ns Cm auto
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.Op Fl m Ar machine
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.Ar disk type
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.Op Ar packid
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.Pp
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This form corresponds to the
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@ -372,6 +412,14 @@ If run on a base disk, this command will create a
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.Dq dangerously-dedicated
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label.
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This command is normally run on a slice rather than a base disk.
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.Pp
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If the
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.Fl m
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option is given, then the label and bootstrap will be written so that
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they are understood by the target
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.Ar machine ;
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defaults to the current hardware architecture.
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.Pp
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If
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.Fl n
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is used, no data will be written to the device, and instead the
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@ -381,6 +429,7 @@ disk label that would have been written will be printed to standard output.
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.Fl R B
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.Op Fl n
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.Op Fl b Ar boot
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.Op Fl m Ar machine
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.Ar disk protofile
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.Pp
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This form corresponds to the
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@ -396,6 +445,14 @@ The bootstrap commands always access the disk directly, so it is not necessary
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to specify the
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.Fl r
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option.
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.Pp
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If the
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.Fl m
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option is given, then the label and bootstrap will be written so that
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they are understood by the target
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.Ar machine ;
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defaults to the current hardware architecture.
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.Pp
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If
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.Fl n
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is used, no data will be written to the device, and instead the
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@ -64,11 +64,35 @@ __FBSDID("$FreeBSD$");
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#define DKTYPENAMES
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#define FSTYPENAMES
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#include <sys/disklabel.h>
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#ifdef PC98
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#include <sys/diskpc98.h>
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#else
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#include <sys/diskmbr.h>
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#if (DOSPARTOFF != 446 || NDOSPART != 4 || DOSPTYP_386BSD != 0xa5)
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#error <sys/diskmbr.h> has changed
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#else
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#define I386_DOSPARTOFF 446
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#define I386_NDOSPART 4
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#define I386_DOSPTYP_386BSD 0xa5
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#endif
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#undef DOSPARTOFF
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#undef NDOSPART
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#undef DOSPTYP_386BSD
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#include <sys/diskpc98.h>
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#if (DOSPARTOFF != 0 || NDOSPART != 16 || DOSPTYP_386BSD != 0x94)
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#error <sys/diskpc98.h> has changed
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#else
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#define PC98_DOSPARTOFF 0
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#define PC98_NDOSPART 16
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#define PC98_DOSPTYP_386BSD 0x94
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#endif
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#undef DOSPARTOFF
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#undef NDOSPART
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#undef DOSPTYP_386BSD
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#define IS_PC98 (arch->mach == MACH_PC98)
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#define DOSPARTOFF (IS_PC98 ? PC98_DOSPARTOFF : I386_DOSPARTOFF)
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#define NDOSPART (IS_PC98 ? PC98_NDOSPART : I386_NDOSPART)
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#define DOSPTYP_386BSD (IS_PC98 ? PC98_DOSPTYP_386BSD : I386_DOSPTYP_386BSD)
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#include <unistd.h>
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#include <string.h>
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@ -104,18 +128,11 @@ __FBSDID("$FreeBSD$");
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#define BIG_NEWFS_FRAG 2048U
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#define BIG_NEWFS_CPG 64U
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#if defined(__i386__)
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#elif defined(__alpha__)
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#elif defined(__ia64__)
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#else
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#error I do not know about this architecture, and shall probably not be compiled for it.
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#endif
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void makelabel(const char *, const char *, struct disklabel *);
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int writelabel(int, const char *, struct disklabel *);
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int writelabel(int, void *, struct disklabel *);
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void l_perror(const char *);
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struct disklabel *readlabel(int);
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struct disklabel *makebootarea(char *, struct disklabel *, int);
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struct disklabel *makebootarea(void *, struct disklabel *, int);
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void display(FILE *, const struct disklabel *);
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int edit(struct disklabel *, int);
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int editit(void);
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@ -137,7 +154,7 @@ char tmpfil[] = PATH_TMPFILE;
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char namebuf[BBSIZE], *np = namebuf;
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struct disklabel lab;
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char bootarea[BBSIZE];
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int64_t bootarea[BBSIZE / 8];
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char blank[] = "";
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char unknown[] = "unknown";
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@ -155,20 +172,36 @@ enum {
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UNSPEC, EDIT, READ, RESTORE, WRITE, WRITEBOOT
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} op = UNSPEC;
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enum { ARCH_I386, ARCH_ALPHA, ARCH_IA64 };
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enum { MACH_I386, MACH_PC98 };
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struct {
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const char *name;
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int arch;
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int mach;
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off_t label_sector;
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off_t label_offset;
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} arches[] = {
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{ "i386", ARCH_I386, MACH_I386, 1, 0 },
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{ "pc98", ARCH_I386, MACH_PC98, 1, 0 },
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{ "alpha", ARCH_ALPHA, ARCH_ALPHA, 0, 64 },
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{ "ia64", ARCH_IA64, ARCH_IA64, 1, 0 },
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}, *arch;
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#define NARCHES (int)(sizeof(arches) / sizeof(*arches))
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int rflag;
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int disable_write; /* set to disable writing to disk label */
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#define OPTIONS "BRb:enrs:w"
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int
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main(int argc, char *argv[])
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{
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struct disklabel *lp;
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FILE *t;
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int ch, f = 0, error = 0;
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int ch, f = 0, error = 0, i;
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char *name = 0;
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while ((ch = getopt(argc, argv, OPTIONS)) != -1)
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while ((ch = getopt(argc, argv, "Bb:em:nRrs:w")) != -1)
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switch (ch) {
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case 'B':
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++installboot;
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@ -176,6 +209,15 @@ main(int argc, char *argv[])
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case 'b':
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xxboot = optarg;
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break;
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case 'm':
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for (i = 0; i < NARCHES &&
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strcmp(arches[i].name, optarg) != 0;
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i++);
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if (i == NARCHES)
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errx(1, "%s: unknown architecture",
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optarg);
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arch = &arches[i];
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break;
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case 'n':
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disable_write = 1;
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break;
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@ -215,6 +257,30 @@ main(int argc, char *argv[])
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if (argc < 1)
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usage();
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if (arch == NULL) {
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for (i = 0; i < NARCHES; i++)
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if (strcmp(arches[i].name,
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#if defined(__i386__)
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#ifdef PC98
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"pc98"
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#else
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"i386"
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#endif
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#elif defined(__alpha__)
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"alpha"
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#elif defined(__ia64__)
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"ia64"
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#else
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"unknown"
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#endif
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) == 0) {
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arch = &arches[i];
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break;
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}
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if (i == NARCHES)
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errx(1, "unsupported architecture");
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}
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dkname = argv[0];
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if (dkname[0] != '/') {
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(void)sprintf(np, "%s%s%c", _PATH_DEV, dkname, 'a' + RAW_PART);
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@ -320,12 +386,10 @@ makelabel(const char *type, const char *name, struct disklabel *lp)
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}
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int
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writelabel(int f, const char *boot, struct disklabel *lp)
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writelabel(int f, void *boot, struct disklabel *lp)
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{
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#ifdef __alpha__
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u_long *p, sum;
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uint64_t *p, sum;
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int i;
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#endif
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if (disable_write) {
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Warning("write to disk label supressed - label was as follows:");
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@ -360,14 +424,14 @@ writelabel(int f, const char *boot, struct disklabel *lp)
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}
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(void)lseek(f, (off_t)0, SEEK_SET);
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#ifdef __alpha__
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/*
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* Generate the bootblock checksum for the SRM console.
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*/
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for (p = (u_long *)boot, i = 0, sum = 0; i < 63; i++)
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sum += p[i];
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p[63] = sum;
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#endif
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if (arch->arch == ARCH_ALPHA) {
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/*
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* Generate the bootblock checksum for the SRM console.
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*/
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for (p = (uint64_t *)boot, i = 0, sum = 0; i < 63; i++)
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sum += p[i];
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p[63] = sum;
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}
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if (ioctl(f, DIOCBSDBB, &boot) == 0)
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return (0);
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if (write(f, boot, lp->d_bbsize) != (int)lp->d_bbsize) {
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@ -420,12 +484,14 @@ readlabel(int f)
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if (read(f, bootarea, BBSIZE) < BBSIZE)
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err(4, "%s", specname);
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for (lp = (struct disklabel *)bootarea;
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lp <= (struct disklabel *)(bootarea + BBSIZE - sizeof(*lp));
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lp <= (struct disklabel *)
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((char *)bootarea + BBSIZE - sizeof(*lp));
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lp = (struct disklabel *)((char *)lp + 16))
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if (lp->d_magic == DISKMAGIC &&
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lp->d_magic2 == DISKMAGIC)
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break;
|
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if (lp > (struct disklabel *)(bootarea+BBSIZE-sizeof(*lp)) ||
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if (lp > (struct disklabel *)
|
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((char *)bootarea + BBSIZE - sizeof(*lp)) ||
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lp->d_magic != DISKMAGIC || lp->d_magic2 != DISKMAGIC ||
|
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dkcksum(lp) != 0)
|
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errx(1,
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@ -443,21 +509,17 @@ readlabel(int f)
|
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* Returns a pointer to the disklabel portion of the bootarea.
|
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*/
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struct disklabel *
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makebootarea(char *boot, struct disklabel *dp, int f)
|
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makebootarea(void *boot, struct disklabel *dp, int f)
|
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{
|
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struct disklabel *lp;
|
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char *p;
|
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int b;
|
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char *dkbasename;
|
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struct stat sb;
|
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#ifdef __alpha__
|
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u_long *bootinfo;
|
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uint64_t *bootinfo;
|
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int n;
|
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#endif
|
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#ifdef __i386__
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char *tmpbuf;
|
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int i, found, dps;
|
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#endif
|
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|
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/* XXX */
|
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if (dp->d_secsize == 0) {
|
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@ -465,7 +527,8 @@ makebootarea(char *boot, struct disklabel *dp, int f)
|
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dp->d_bbsize = BBSIZE;
|
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}
|
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lp = (struct disklabel *)
|
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(boot + (LABELSECTOR * dp->d_secsize) + LABELOFFSET);
|
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((char *)boot + (arch->label_sector * dp->d_secsize) +
|
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arch->label_offset);
|
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bzero((char *)lp, sizeof *lp);
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/*
|
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* If we are not installing a boot program but we are installing a
|
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@ -505,57 +568,55 @@ makebootarea(char *boot, struct disklabel *dp, int f)
|
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err(4, "%s", xxboot);
|
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if (fstat(b, &sb) != 0)
|
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err(4, "%s", xxboot);
|
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#ifdef __i386__
|
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if (sb.st_size > BBSIZE)
|
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errx(4, "%s too large", xxboot);
|
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/*
|
||||
* XXX Botch alert.
|
||||
* The i386/PC98 has the so-called fdisk table embedded into the
|
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* primary bootstrap. We take care to not clobber it, but
|
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* only if it does already contain some data. (Otherwise,
|
||||
* the xxboot provides a template.)
|
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*/
|
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if ((tmpbuf = (char *)malloc((int)dp->d_secsize)) == 0)
|
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err(4, "%s", xxboot);
|
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memcpy((void *)tmpbuf, (void *)boot, (int)dp->d_secsize);
|
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if (arch->arch == ARCH_I386) {
|
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if (sb.st_size > BBSIZE)
|
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errx(4, "%s too large", xxboot);
|
||||
/*
|
||||
* XXX Botch alert.
|
||||
* The i386/PC98 has the so-called fdisk table embedded into the
|
||||
* primary bootstrap. We take care to not clobber it, but
|
||||
* only if it does already contain some data. (Otherwise,
|
||||
* the xxboot provides a template.)
|
||||
*/
|
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if ((tmpbuf = (char *)malloc((int)dp->d_secsize)) == 0)
|
||||
err(4, "%s", xxboot);
|
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memcpy((void *)tmpbuf, (void *)boot, (int)dp->d_secsize);
|
||||
|
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if (read(b, boot, BBSIZE) < 0)
|
||||
err(4, "%s", xxboot);
|
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if (read(b, boot, BBSIZE) < 0)
|
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err(4, "%s", xxboot);
|
||||
|
||||
/* XXX: rely on some very precise overlaps in definitions */
|
||||
#ifdef PC98
|
||||
dps = sizeof(struct pc98_partition);
|
||||
#else
|
||||
dps = sizeof(struct dos_partition);
|
||||
#endif
|
||||
for (i = DOSPARTOFF, found = 0;
|
||||
!found && i < (int)(DOSPARTOFF + NDOSPART * dps);
|
||||
i++)
|
||||
found = tmpbuf[i] != 0;
|
||||
if (found)
|
||||
memcpy((void *)&boot[DOSPARTOFF],
|
||||
(void *)&tmpbuf[DOSPARTOFF],
|
||||
NDOSPART * dps);
|
||||
free(tmpbuf);
|
||||
#endif /* __i386__ */
|
||||
/* XXX: rely on some very precise overlaps in definitions */
|
||||
dps = IS_PC98 ? sizeof(struct pc98_partition) :
|
||||
sizeof(struct dos_partition);
|
||||
for (i = DOSPARTOFF, found = 0;
|
||||
!found && i < (int)(DOSPARTOFF + NDOSPART * dps);
|
||||
i++)
|
||||
found = tmpbuf[i] != 0;
|
||||
if (found)
|
||||
memcpy((void *)&((char *)boot)[DOSPARTOFF],
|
||||
(void *)&tmpbuf[DOSPARTOFF],
|
||||
NDOSPART * dps);
|
||||
free(tmpbuf);
|
||||
}
|
||||
|
||||
#ifdef __alpha__
|
||||
if (sb.st_size > BBSIZE - dp->d_secsize)
|
||||
errx(4, "%s too large", xxboot);
|
||||
/*
|
||||
* On the alpha, the primary bootstrap starts at the
|
||||
* second sector of the boot area. The first sector
|
||||
* contains the label and must be edited to contain the
|
||||
* size and location of the primary bootstrap.
|
||||
*/
|
||||
n = read(b, boot + dp->d_secsize, BBSIZE - dp->d_secsize);
|
||||
if (n < 0)
|
||||
err(4, "%s", xxboot);
|
||||
bootinfo = (u_long *)(boot + 480);
|
||||
bootinfo[0] = (n + dp->d_secsize - 1) / dp->d_secsize;
|
||||
bootinfo[1] = 1; /* start at sector 1 */
|
||||
bootinfo[2] = 0; /* flags (must be zero) */
|
||||
#endif /* __alpha__ */
|
||||
if (arch->arch == ARCH_ALPHA) {
|
||||
if (sb.st_size > BBSIZE - dp->d_secsize)
|
||||
errx(4, "%s too large", xxboot);
|
||||
/*
|
||||
* On the alpha, the primary bootstrap starts at the
|
||||
* second sector of the boot area. The first sector
|
||||
* contains the label and must be edited to contain the
|
||||
* size and location of the primary bootstrap.
|
||||
*/
|
||||
n = read(b, (char *)boot + dp->d_secsize,
|
||||
BBSIZE - dp->d_secsize);
|
||||
if (n < 0)
|
||||
err(4, "%s", xxboot);
|
||||
bootinfo = (uint64_t *)((char *)boot + 480);
|
||||
bootinfo[0] = (n + dp->d_secsize - 1) / dp->d_secsize;
|
||||
bootinfo[1] = 1; /* start at sector 1 */
|
||||
bootinfo[2] = 0; /* flags (must be zero) */
|
||||
}
|
||||
|
||||
(void)close(b);
|
||||
/*
|
||||
@ -1495,20 +1556,22 @@ Warning(const char *fmt, ...)
|
||||
void
|
||||
usage(void)
|
||||
{
|
||||
fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
|
||||
"usage: disklabel [-r] disk",
|
||||
"\t\t(to read label)",
|
||||
" disklabel -w [-r] [-n] disk type [ packid ]",
|
||||
"\t\t(to write label with existing boot program)",
|
||||
" disklabel -e [-r] [-n] disk",
|
||||
"\t\t(to edit label)",
|
||||
" disklabel -R [-r] [-n] disk protofile",
|
||||
"\t\t(to restore label with existing boot program)",
|
||||
" disklabel -B [-n] [ -b bootprog ] disk [ type ]",
|
||||
"\t\t(to install boot program with existing on-disk label)",
|
||||
" disklabel -w -B [-n] [ -b bootprog ] disk type [ packid ]",
|
||||
"\t\t(to write label and install boot program)",
|
||||
" disklabel -R -B [-n] [ -b bootprog ] disk protofile",
|
||||
|
||||
fprintf(stderr,
|
||||
"%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
|
||||
"usage: disklabel [-r] disk",
|
||||
"\t\t(to read label)",
|
||||
" disklabel -w [-nr] [-m machine] disk type [packid]",
|
||||
"\t\t(to write label with existing boot program)",
|
||||
" disklabel -e [-nr] [-m machine] disk",
|
||||
"\t\t(to edit label)",
|
||||
" disklabel -R [-nr] [-m machine] disk protofile",
|
||||
"\t\t(to restore label with existing boot program)",
|
||||
" disklabel -B [-b boot] [-m machine] disk",
|
||||
"\t\t(to install boot program with existing on-disk label)",
|
||||
" disklabel -w -B [-n] [-b boot] [-m machine] disk type [packid]",
|
||||
"\t\t(to write label and install boot program)",
|
||||
" disklabel -R -B [-n] [-b boot] [-m machine] disk protofile",
|
||||
"\t\t(to restore label and install boot program)"
|
||||
);
|
||||
exit(1);
|
||||
|
||||
@ -48,31 +48,37 @@
|
||||
.Nm
|
||||
.Fl w
|
||||
.Op Fl nr
|
||||
.Ar disk disktype Ns | Ns Cm auto
|
||||
.Op Fl m Ar machine
|
||||
.Ar disk type
|
||||
.Op Ar packid
|
||||
.Nm
|
||||
.Fl e
|
||||
.Op Fl nr
|
||||
.Op Fl m Ar machine
|
||||
.Ar disk
|
||||
.Nm
|
||||
.Fl R
|
||||
.Op Fl nr
|
||||
.Op Fl m Ar machine
|
||||
.Ar disk protofile
|
||||
.Pp
|
||||
.Nm
|
||||
.Fl B
|
||||
.Op Fl b Ar boot
|
||||
.Op Fl m Ar machine
|
||||
.Ar disk
|
||||
.Nm
|
||||
.Fl w B
|
||||
.Op Fl n
|
||||
.Op Fl b Ar boot
|
||||
.Ar disk disktype Ns | Ns Cm auto
|
||||
.Op Fl m Ar machine
|
||||
.Ar disk type
|
||||
.Op Ar packid
|
||||
.Nm
|
||||
.Fl R B
|
||||
.Op Fl n
|
||||
.Op Fl b Ar boot
|
||||
.Op Fl m Ar machine
|
||||
.Ar disk protofile
|
||||
.Sh DESCRIPTION
|
||||
The
|
||||
@ -167,7 +173,8 @@ To write a standard label, use the form
|
||||
.Nm
|
||||
.Fl w
|
||||
.Op Fl nr
|
||||
.Ar disk disktype Ns | Ns Cm auto
|
||||
.Op Fl m Ar machine
|
||||
.Ar disk type
|
||||
.Op Ar packid
|
||||
.Pp
|
||||
The required arguments to
|
||||
@ -187,6 +194,13 @@ The
|
||||
.Ar packid
|
||||
must be quoted if it contains blanks.
|
||||
.Pp
|
||||
If the
|
||||
.Fl m
|
||||
option is given, then label will be written so that
|
||||
it is understood by the target
|
||||
.Ar machine ;
|
||||
defaults to the current hardware architecture.
|
||||
.Pp
|
||||
If
|
||||
.Fl n
|
||||
is used, no data will be written to the device, and instead the
|
||||
@ -199,7 +213,7 @@ will be written directly.
|
||||
A side-effect of this is that any existing bootstrap code will be overwritten
|
||||
and the disk rendered unbootable.
|
||||
See the boot options below for a method of
|
||||
writing the label and the bootstrap at the same time.
|
||||
writing the and the bootstrap at the same time.
|
||||
If
|
||||
.Fl r
|
||||
is not specified,
|
||||
@ -212,7 +226,7 @@ In either case, the kernel's in-core label is replaced.
|
||||
.Pp
|
||||
For a virgin disk that is not known to
|
||||
.Xr disktab 5 ,
|
||||
.Ar disktype
|
||||
.Ar type
|
||||
can be specified as
|
||||
.Cm auto .
|
||||
In this case, the driver is requested to produce a virgin label for the
|
||||
@ -270,6 +284,7 @@ To edit an existing disk label, use the form
|
||||
.Nm
|
||||
.Fl e
|
||||
.Op Fl nr
|
||||
.Op Fl m Ar machine
|
||||
.Ar disk
|
||||
.Pp
|
||||
This command reads the label from the in-core kernel copy, or directly from the
|
||||
@ -288,6 +303,14 @@ When the editor terminates, the label file is used to rewrite the disk label.
|
||||
Existing bootstrap code is unchanged regardless of whether
|
||||
.Fl r
|
||||
was specified.
|
||||
.Pp
|
||||
If the
|
||||
.Fl m
|
||||
option is given, then the label will be written so that
|
||||
it is understood by the target
|
||||
.Ar machine ;
|
||||
defaults to the current hardware architecture.
|
||||
.Pp
|
||||
If
|
||||
.Fl n
|
||||
is used, no data will be written to the device, and instead the
|
||||
@ -300,6 +323,7 @@ To restore a disk label from a file, use the form
|
||||
.Nm
|
||||
.Fl R
|
||||
.Op Fl nr
|
||||
.Op Fl m Ar machine
|
||||
.Ar disk protofile
|
||||
.Pp
|
||||
.Nm
|
||||
@ -317,6 +341,14 @@ clobbered if
|
||||
is specified, and will be unaffected otherwise.
|
||||
See the boot options below for a
|
||||
method of restoring the label and writing the bootstrap at the same time.
|
||||
.Pp
|
||||
If the
|
||||
.Fl m
|
||||
option is given, then the label will be written so that
|
||||
it is understood by the target
|
||||
.Ar machine ;
|
||||
defaults to the current hardware architecture.
|
||||
.Pp
|
||||
If
|
||||
.Fl n
|
||||
is used, no data will be written to the device, and instead the
|
||||
@ -345,6 +377,7 @@ on the base disk should probably be updated; see
|
||||
.Nm
|
||||
.Fl B
|
||||
.Op Fl b Ar boot
|
||||
.Op Fl m Ar machine
|
||||
.Ar disk
|
||||
.Pp
|
||||
This form installs the bootstrap only.
|
||||
@ -357,11 +390,18 @@ disk.
|
||||
This command is typically run on a slice such as
|
||||
.Pa da0s1 .
|
||||
.Pp
|
||||
The
|
||||
.Fl m
|
||||
option should be specified if the label was
|
||||
created for a different hardware architecture,
|
||||
.Ar machine .
|
||||
.Pp
|
||||
.Nm
|
||||
.Fl w B
|
||||
.Op Fl n
|
||||
.Op Fl b Ar boot
|
||||
.Ar disk disktype Ns | Ns Cm auto
|
||||
.Op Fl m Ar machine
|
||||
.Ar disk type
|
||||
.Op Ar packid
|
||||
.Pp
|
||||
This form corresponds to the
|
||||
@ -372,6 +412,14 @@ If run on a base disk, this command will create a
|
||||
.Dq dangerously-dedicated
|
||||
label.
|
||||
This command is normally run on a slice rather than a base disk.
|
||||
.Pp
|
||||
If the
|
||||
.Fl m
|
||||
option is given, then the label and bootstrap will be written so that
|
||||
they are understood by the target
|
||||
.Ar machine ;
|
||||
defaults to the current hardware architecture.
|
||||
.Pp
|
||||
If
|
||||
.Fl n
|
||||
is used, no data will be written to the device, and instead the
|
||||
@ -381,6 +429,7 @@ disk label that would have been written will be printed to standard output.
|
||||
.Fl R B
|
||||
.Op Fl n
|
||||
.Op Fl b Ar boot
|
||||
.Op Fl m Ar machine
|
||||
.Ar disk protofile
|
||||
.Pp
|
||||
This form corresponds to the
|
||||
@ -396,6 +445,14 @@ The bootstrap commands always access the disk directly, so it is not necessary
|
||||
to specify the
|
||||
.Fl r
|
||||
option.
|
||||
.Pp
|
||||
If the
|
||||
.Fl m
|
||||
option is given, then the label and bootstrap will be written so that
|
||||
they are understood by the target
|
||||
.Ar machine ;
|
||||
defaults to the current hardware architecture.
|
||||
.Pp
|
||||
If
|
||||
.Fl n
|
||||
is used, no data will be written to the device, and instead the
|
||||
|
||||
@ -64,11 +64,35 @@ __FBSDID("$FreeBSD$");
|
||||
#define DKTYPENAMES
|
||||
#define FSTYPENAMES
|
||||
#include <sys/disklabel.h>
|
||||
#ifdef PC98
|
||||
#include <sys/diskpc98.h>
|
||||
#else
|
||||
|
||||
#include <sys/diskmbr.h>
|
||||
#if (DOSPARTOFF != 446 || NDOSPART != 4 || DOSPTYP_386BSD != 0xa5)
|
||||
#error <sys/diskmbr.h> has changed
|
||||
#else
|
||||
#define I386_DOSPARTOFF 446
|
||||
#define I386_NDOSPART 4
|
||||
#define I386_DOSPTYP_386BSD 0xa5
|
||||
#endif
|
||||
#undef DOSPARTOFF
|
||||
#undef NDOSPART
|
||||
#undef DOSPTYP_386BSD
|
||||
|
||||
#include <sys/diskpc98.h>
|
||||
#if (DOSPARTOFF != 0 || NDOSPART != 16 || DOSPTYP_386BSD != 0x94)
|
||||
#error <sys/diskpc98.h> has changed
|
||||
#else
|
||||
#define PC98_DOSPARTOFF 0
|
||||
#define PC98_NDOSPART 16
|
||||
#define PC98_DOSPTYP_386BSD 0x94
|
||||
#endif
|
||||
#undef DOSPARTOFF
|
||||
#undef NDOSPART
|
||||
#undef DOSPTYP_386BSD
|
||||
|
||||
#define IS_PC98 (arch->mach == MACH_PC98)
|
||||
#define DOSPARTOFF (IS_PC98 ? PC98_DOSPARTOFF : I386_DOSPARTOFF)
|
||||
#define NDOSPART (IS_PC98 ? PC98_NDOSPART : I386_NDOSPART)
|
||||
#define DOSPTYP_386BSD (IS_PC98 ? PC98_DOSPTYP_386BSD : I386_DOSPTYP_386BSD)
|
||||
|
||||
#include <unistd.h>
|
||||
#include <string.h>
|
||||
@ -104,18 +128,11 @@ __FBSDID("$FreeBSD$");
|
||||
#define BIG_NEWFS_FRAG 2048U
|
||||
#define BIG_NEWFS_CPG 64U
|
||||
|
||||
#if defined(__i386__)
|
||||
#elif defined(__alpha__)
|
||||
#elif defined(__ia64__)
|
||||
#else
|
||||
#error I do not know about this architecture, and shall probably not be compiled for it.
|
||||
#endif
|
||||
|
||||
void makelabel(const char *, const char *, struct disklabel *);
|
||||
int writelabel(int, const char *, struct disklabel *);
|
||||
int writelabel(int, void *, struct disklabel *);
|
||||
void l_perror(const char *);
|
||||
struct disklabel *readlabel(int);
|
||||
struct disklabel *makebootarea(char *, struct disklabel *, int);
|
||||
struct disklabel *makebootarea(void *, struct disklabel *, int);
|
||||
void display(FILE *, const struct disklabel *);
|
||||
int edit(struct disklabel *, int);
|
||||
int editit(void);
|
||||
@ -137,7 +154,7 @@ char tmpfil[] = PATH_TMPFILE;
|
||||
|
||||
char namebuf[BBSIZE], *np = namebuf;
|
||||
struct disklabel lab;
|
||||
char bootarea[BBSIZE];
|
||||
int64_t bootarea[BBSIZE / 8];
|
||||
char blank[] = "";
|
||||
char unknown[] = "unknown";
|
||||
|
||||
@ -155,20 +172,36 @@ enum {
|
||||
UNSPEC, EDIT, READ, RESTORE, WRITE, WRITEBOOT
|
||||
} op = UNSPEC;
|
||||
|
||||
enum { ARCH_I386, ARCH_ALPHA, ARCH_IA64 };
|
||||
|
||||
enum { MACH_I386, MACH_PC98 };
|
||||
|
||||
struct {
|
||||
const char *name;
|
||||
int arch;
|
||||
int mach;
|
||||
off_t label_sector;
|
||||
off_t label_offset;
|
||||
} arches[] = {
|
||||
{ "i386", ARCH_I386, MACH_I386, 1, 0 },
|
||||
{ "pc98", ARCH_I386, MACH_PC98, 1, 0 },
|
||||
{ "alpha", ARCH_ALPHA, ARCH_ALPHA, 0, 64 },
|
||||
{ "ia64", ARCH_IA64, ARCH_IA64, 1, 0 },
|
||||
}, *arch;
|
||||
#define NARCHES (int)(sizeof(arches) / sizeof(*arches))
|
||||
|
||||
int rflag;
|
||||
int disable_write; /* set to disable writing to disk label */
|
||||
|
||||
#define OPTIONS "BRb:enrs:w"
|
||||
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
struct disklabel *lp;
|
||||
FILE *t;
|
||||
int ch, f = 0, error = 0;
|
||||
int ch, f = 0, error = 0, i;
|
||||
char *name = 0;
|
||||
|
||||
while ((ch = getopt(argc, argv, OPTIONS)) != -1)
|
||||
while ((ch = getopt(argc, argv, "Bb:em:nRrs:w")) != -1)
|
||||
switch (ch) {
|
||||
case 'B':
|
||||
++installboot;
|
||||
@ -176,6 +209,15 @@ main(int argc, char *argv[])
|
||||
case 'b':
|
||||
xxboot = optarg;
|
||||
break;
|
||||
case 'm':
|
||||
for (i = 0; i < NARCHES &&
|
||||
strcmp(arches[i].name, optarg) != 0;
|
||||
i++);
|
||||
if (i == NARCHES)
|
||||
errx(1, "%s: unknown architecture",
|
||||
optarg);
|
||||
arch = &arches[i];
|
||||
break;
|
||||
case 'n':
|
||||
disable_write = 1;
|
||||
break;
|
||||
@ -215,6 +257,30 @@ main(int argc, char *argv[])
|
||||
if (argc < 1)
|
||||
usage();
|
||||
|
||||
if (arch == NULL) {
|
||||
for (i = 0; i < NARCHES; i++)
|
||||
if (strcmp(arches[i].name,
|
||||
#if defined(__i386__)
|
||||
#ifdef PC98
|
||||
"pc98"
|
||||
#else
|
||||
"i386"
|
||||
#endif
|
||||
#elif defined(__alpha__)
|
||||
"alpha"
|
||||
#elif defined(__ia64__)
|
||||
"ia64"
|
||||
#else
|
||||
"unknown"
|
||||
#endif
|
||||
) == 0) {
|
||||
arch = &arches[i];
|
||||
break;
|
||||
}
|
||||
if (i == NARCHES)
|
||||
errx(1, "unsupported architecture");
|
||||
}
|
||||
|
||||
dkname = argv[0];
|
||||
if (dkname[0] != '/') {
|
||||
(void)sprintf(np, "%s%s%c", _PATH_DEV, dkname, 'a' + RAW_PART);
|
||||
@ -320,12 +386,10 @@ makelabel(const char *type, const char *name, struct disklabel *lp)
|
||||
}
|
||||
|
||||
int
|
||||
writelabel(int f, const char *boot, struct disklabel *lp)
|
||||
writelabel(int f, void *boot, struct disklabel *lp)
|
||||
{
|
||||
#ifdef __alpha__
|
||||
u_long *p, sum;
|
||||
uint64_t *p, sum;
|
||||
int i;
|
||||
#endif
|
||||
|
||||
if (disable_write) {
|
||||
Warning("write to disk label supressed - label was as follows:");
|
||||
@ -360,14 +424,14 @@ writelabel(int f, const char *boot, struct disklabel *lp)
|
||||
}
|
||||
(void)lseek(f, (off_t)0, SEEK_SET);
|
||||
|
||||
#ifdef __alpha__
|
||||
/*
|
||||
* Generate the bootblock checksum for the SRM console.
|
||||
*/
|
||||
for (p = (u_long *)boot, i = 0, sum = 0; i < 63; i++)
|
||||
sum += p[i];
|
||||
p[63] = sum;
|
||||
#endif
|
||||
if (arch->arch == ARCH_ALPHA) {
|
||||
/*
|
||||
* Generate the bootblock checksum for the SRM console.
|
||||
*/
|
||||
for (p = (uint64_t *)boot, i = 0, sum = 0; i < 63; i++)
|
||||
sum += p[i];
|
||||
p[63] = sum;
|
||||
}
|
||||
if (ioctl(f, DIOCBSDBB, &boot) == 0)
|
||||
return (0);
|
||||
if (write(f, boot, lp->d_bbsize) != (int)lp->d_bbsize) {
|
||||
@ -420,12 +484,14 @@ readlabel(int f)
|
||||
if (read(f, bootarea, BBSIZE) < BBSIZE)
|
||||
err(4, "%s", specname);
|
||||
for (lp = (struct disklabel *)bootarea;
|
||||
lp <= (struct disklabel *)(bootarea + BBSIZE - sizeof(*lp));
|
||||
lp <= (struct disklabel *)
|
||||
((char *)bootarea + BBSIZE - sizeof(*lp));
|
||||
lp = (struct disklabel *)((char *)lp + 16))
|
||||
if (lp->d_magic == DISKMAGIC &&
|
||||
lp->d_magic2 == DISKMAGIC)
|
||||
break;
|
||||
if (lp > (struct disklabel *)(bootarea+BBSIZE-sizeof(*lp)) ||
|
||||
if (lp > (struct disklabel *)
|
||||
((char *)bootarea + BBSIZE - sizeof(*lp)) ||
|
||||
lp->d_magic != DISKMAGIC || lp->d_magic2 != DISKMAGIC ||
|
||||
dkcksum(lp) != 0)
|
||||
errx(1,
|
||||
@ -443,21 +509,17 @@ readlabel(int f)
|
||||
* Returns a pointer to the disklabel portion of the bootarea.
|
||||
*/
|
||||
struct disklabel *
|
||||
makebootarea(char *boot, struct disklabel *dp, int f)
|
||||
makebootarea(void *boot, struct disklabel *dp, int f)
|
||||
{
|
||||
struct disklabel *lp;
|
||||
char *p;
|
||||
int b;
|
||||
char *dkbasename;
|
||||
struct stat sb;
|
||||
#ifdef __alpha__
|
||||
u_long *bootinfo;
|
||||
uint64_t *bootinfo;
|
||||
int n;
|
||||
#endif
|
||||
#ifdef __i386__
|
||||
char *tmpbuf;
|
||||
int i, found, dps;
|
||||
#endif
|
||||
|
||||
/* XXX */
|
||||
if (dp->d_secsize == 0) {
|
||||
@ -465,7 +527,8 @@ makebootarea(char *boot, struct disklabel *dp, int f)
|
||||
dp->d_bbsize = BBSIZE;
|
||||
}
|
||||
lp = (struct disklabel *)
|
||||
(boot + (LABELSECTOR * dp->d_secsize) + LABELOFFSET);
|
||||
((char *)boot + (arch->label_sector * dp->d_secsize) +
|
||||
arch->label_offset);
|
||||
bzero((char *)lp, sizeof *lp);
|
||||
/*
|
||||
* If we are not installing a boot program but we are installing a
|
||||
@ -505,57 +568,55 @@ makebootarea(char *boot, struct disklabel *dp, int f)
|
||||
err(4, "%s", xxboot);
|
||||
if (fstat(b, &sb) != 0)
|
||||
err(4, "%s", xxboot);
|
||||
#ifdef __i386__
|
||||
if (sb.st_size > BBSIZE)
|
||||
errx(4, "%s too large", xxboot);
|
||||
/*
|
||||
* XXX Botch alert.
|
||||
* The i386/PC98 has the so-called fdisk table embedded into the
|
||||
* primary bootstrap. We take care to not clobber it, but
|
||||
* only if it does already contain some data. (Otherwise,
|
||||
* the xxboot provides a template.)
|
||||
*/
|
||||
if ((tmpbuf = (char *)malloc((int)dp->d_secsize)) == 0)
|
||||
err(4, "%s", xxboot);
|
||||
memcpy((void *)tmpbuf, (void *)boot, (int)dp->d_secsize);
|
||||
if (arch->arch == ARCH_I386) {
|
||||
if (sb.st_size > BBSIZE)
|
||||
errx(4, "%s too large", xxboot);
|
||||
/*
|
||||
* XXX Botch alert.
|
||||
* The i386/PC98 has the so-called fdisk table embedded into the
|
||||
* primary bootstrap. We take care to not clobber it, but
|
||||
* only if it does already contain some data. (Otherwise,
|
||||
* the xxboot provides a template.)
|
||||
*/
|
||||
if ((tmpbuf = (char *)malloc((int)dp->d_secsize)) == 0)
|
||||
err(4, "%s", xxboot);
|
||||
memcpy((void *)tmpbuf, (void *)boot, (int)dp->d_secsize);
|
||||
|
||||
if (read(b, boot, BBSIZE) < 0)
|
||||
err(4, "%s", xxboot);
|
||||
if (read(b, boot, BBSIZE) < 0)
|
||||
err(4, "%s", xxboot);
|
||||
|
||||
/* XXX: rely on some very precise overlaps in definitions */
|
||||
#ifdef PC98
|
||||
dps = sizeof(struct pc98_partition);
|
||||
#else
|
||||
dps = sizeof(struct dos_partition);
|
||||
#endif
|
||||
for (i = DOSPARTOFF, found = 0;
|
||||
!found && i < (int)(DOSPARTOFF + NDOSPART * dps);
|
||||
i++)
|
||||
found = tmpbuf[i] != 0;
|
||||
if (found)
|
||||
memcpy((void *)&boot[DOSPARTOFF],
|
||||
(void *)&tmpbuf[DOSPARTOFF],
|
||||
NDOSPART * dps);
|
||||
free(tmpbuf);
|
||||
#endif /* __i386__ */
|
||||
/* XXX: rely on some very precise overlaps in definitions */
|
||||
dps = IS_PC98 ? sizeof(struct pc98_partition) :
|
||||
sizeof(struct dos_partition);
|
||||
for (i = DOSPARTOFF, found = 0;
|
||||
!found && i < (int)(DOSPARTOFF + NDOSPART * dps);
|
||||
i++)
|
||||
found = tmpbuf[i] != 0;
|
||||
if (found)
|
||||
memcpy((void *)&((char *)boot)[DOSPARTOFF],
|
||||
(void *)&tmpbuf[DOSPARTOFF],
|
||||
NDOSPART * dps);
|
||||
free(tmpbuf);
|
||||
}
|
||||
|
||||
#ifdef __alpha__
|
||||
if (sb.st_size > BBSIZE - dp->d_secsize)
|
||||
errx(4, "%s too large", xxboot);
|
||||
/*
|
||||
* On the alpha, the primary bootstrap starts at the
|
||||
* second sector of the boot area. The first sector
|
||||
* contains the label and must be edited to contain the
|
||||
* size and location of the primary bootstrap.
|
||||
*/
|
||||
n = read(b, boot + dp->d_secsize, BBSIZE - dp->d_secsize);
|
||||
if (n < 0)
|
||||
err(4, "%s", xxboot);
|
||||
bootinfo = (u_long *)(boot + 480);
|
||||
bootinfo[0] = (n + dp->d_secsize - 1) / dp->d_secsize;
|
||||
bootinfo[1] = 1; /* start at sector 1 */
|
||||
bootinfo[2] = 0; /* flags (must be zero) */
|
||||
#endif /* __alpha__ */
|
||||
if (arch->arch == ARCH_ALPHA) {
|
||||
if (sb.st_size > BBSIZE - dp->d_secsize)
|
||||
errx(4, "%s too large", xxboot);
|
||||
/*
|
||||
* On the alpha, the primary bootstrap starts at the
|
||||
* second sector of the boot area. The first sector
|
||||
* contains the label and must be edited to contain the
|
||||
* size and location of the primary bootstrap.
|
||||
*/
|
||||
n = read(b, (char *)boot + dp->d_secsize,
|
||||
BBSIZE - dp->d_secsize);
|
||||
if (n < 0)
|
||||
err(4, "%s", xxboot);
|
||||
bootinfo = (uint64_t *)((char *)boot + 480);
|
||||
bootinfo[0] = (n + dp->d_secsize - 1) / dp->d_secsize;
|
||||
bootinfo[1] = 1; /* start at sector 1 */
|
||||
bootinfo[2] = 0; /* flags (must be zero) */
|
||||
}
|
||||
|
||||
(void)close(b);
|
||||
/*
|
||||
@ -1495,20 +1556,22 @@ Warning(const char *fmt, ...)
|
||||
void
|
||||
usage(void)
|
||||
{
|
||||
fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
|
||||
"usage: disklabel [-r] disk",
|
||||
"\t\t(to read label)",
|
||||
" disklabel -w [-r] [-n] disk type [ packid ]",
|
||||
"\t\t(to write label with existing boot program)",
|
||||
" disklabel -e [-r] [-n] disk",
|
||||
"\t\t(to edit label)",
|
||||
" disklabel -R [-r] [-n] disk protofile",
|
||||
"\t\t(to restore label with existing boot program)",
|
||||
" disklabel -B [-n] [ -b bootprog ] disk [ type ]",
|
||||
"\t\t(to install boot program with existing on-disk label)",
|
||||
" disklabel -w -B [-n] [ -b bootprog ] disk type [ packid ]",
|
||||
"\t\t(to write label and install boot program)",
|
||||
" disklabel -R -B [-n] [ -b bootprog ] disk protofile",
|
||||
|
||||
fprintf(stderr,
|
||||
"%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
|
||||
"usage: disklabel [-r] disk",
|
||||
"\t\t(to read label)",
|
||||
" disklabel -w [-nr] [-m machine] disk type [packid]",
|
||||
"\t\t(to write label with existing boot program)",
|
||||
" disklabel -e [-nr] [-m machine] disk",
|
||||
"\t\t(to edit label)",
|
||||
" disklabel -R [-nr] [-m machine] disk protofile",
|
||||
"\t\t(to restore label with existing boot program)",
|
||||
" disklabel -B [-b boot] [-m machine] disk",
|
||||
"\t\t(to install boot program with existing on-disk label)",
|
||||
" disklabel -w -B [-n] [-b boot] [-m machine] disk type [packid]",
|
||||
"\t\t(to write label and install boot program)",
|
||||
" disklabel -R -B [-n] [-b boot] [-m machine] disk protofile",
|
||||
"\t\t(to restore label and install boot program)"
|
||||
);
|
||||
exit(1);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user