mirror of
https://github.com/ksherlock/minix.fst.git
synced 2024-10-31 15:05:44 +00:00
257 lines
3.2 KiB
Plaintext
257 lines
3.2 KiB
Plaintext
include 'gsos.equ'
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include 'minix.equ'
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include 'fst.equ'
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include 'fst.macros'
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include 'M16.Debug'
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include 'records.equ'
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;
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; VolumeGS / Volume call.
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;
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; check if the disk is ours. create a VCR or mark it active.
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;
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import id_disk
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import do_file_sys_id
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import do_ignore
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entry do_block_size
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entry do_free_blocks
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entry do_total_blocks
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entry do_vol_name_0
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entry do_vol_name_1
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volume procname export
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with dp
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with dev_parms
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with fst_parms
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stz tool_error
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lda dev_num
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jsr id_disk
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bcc got_it
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cmp #dup_volume
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beq dup
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sec
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rtl
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dup
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; this is a duplicate volume.
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; return the name (and only the name), but also return the error.
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lda <call_class
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beq dup_0
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dup_1
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ldy #VolumeRecGS.volName
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jsr do_vol_name_1
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bcs exit
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lda #dup_volume
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bra exit
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dup_0
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ldy #VolumeRec.volName
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jsr do_vol_name_0
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bcs exit
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lda #dup_volume
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bra exit
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got_it
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lda <call_class
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beq class0
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class1
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lda [param_blk_ptr] ; pcount
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dec a
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asl a ; x 2
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asl a ; x 4
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tax
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dispatch volume_dcb_1
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lda tool_error
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cmp #1
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rtl
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class0
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ldx #volume_dcb_0_size-4
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dispatch volume_dcb_0
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lda tool_error
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exit
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cmp #1
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rtl
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volume_dcb_0
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dc.w VolumeRec.deviceName, do_ignore
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dc.w VolumeRec.volName, do_vol_name_0
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dc.w VolumeRec.totalBlocks, do_total_blocks
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dc.w VolumeRec.freeBlocks, do_free_blocks
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dc.w VolumeRec.fileSysID, do_file_sys_id
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volume_dcb_0_size equ *-volume_dcb_0
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volume_dcb_1
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dc.w VolumeRecGS.devName, do_ignore
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dc.w VolumeRecGS.volName, do_vol_name_1
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dc.w VolumeRecGS.totalBlocks, do_total_blocks
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dc.w VolumeRecGS.freeBlocks, do_free_blocks
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dc.w VolumeRecGS.fileSysID, do_file_sys_id
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dc.w VolumeRecGS.blockSize, do_block_size
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dc.w VolumeRecGS.characteristics, do_ignore
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dc.w VolumeRecGS.deviceID, do_ignore
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endp
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do_block_size proc
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with dp
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with fst_parms
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lda #1024
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sta [param_blk_ptr],y
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rts
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endp
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do_total_blocks proc
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; total blocks = 2 + imap_blocks + zmap_blocks + nzones. I think.
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with dp
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with fst_parms
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phy ; save
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lda #2 ; boot block, super block.
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clc
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; pull from vcr?
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ldy #vcr.super.nzones
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adc [my_vcr],y
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ldy #vcr.super.imap_blocks
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adc [my_vcr],y
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ldy #vcr.super.zmap_blocks
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adc [my_vcr],y
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ply
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sta [param_blk_ptr],y
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rts
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endp
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do_free_blocks proc
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; load the zmaps and count them up...
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; someday.
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with fst_parms
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lda #0
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sta [param_blk_ptr],y
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rts
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endp
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do_vol_name_0 proc
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; store the volume name (class 0)
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with fst_parms
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with dp
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;ldy #VolumeRec.volName
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lda [param_blk_ptr],y
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sta ptr
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iny
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iny
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lda [param_blk_ptr],y
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sta ptr+2
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lda #0
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short m
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lda defaultName ; count.
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tax
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tay
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@loop
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lda defaultName,x
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sta [ptr],y
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dex
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dey
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bpl @loop
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done
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long m
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clc
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rts
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defaultName str.b ':minix'
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endp
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do_vol_name_1 proc
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with fst_parms
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with dp
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;ldy #VolumeRecGS.volName
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lda [param_blk_ptr],y
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sta ptr
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iny
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iny
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lda [param_blk_ptr],y
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sta ptr+2
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; check the length.
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lda [ptr]
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sec
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sbc #4
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bmi error
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cmp defaultName
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bcc error_store_size
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;ldy #2
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lda defaultName
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;sta [ptr],y
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inc a ; +1 for length word.
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tax
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inc a ; skip buffer size.
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inc a
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tay
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short m
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@loop
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lda defaultName,x
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sta [ptr],y
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dey
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dex
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bpl @loop
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done
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long m
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clc
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rts
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error_store_size
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lda defaultName
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ldy #2
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sta [ptr],y
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error
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lda #buff_too_small
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sta tool_error
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sec
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rts
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defaultName str.w ':minix'
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endp
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end
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