A2osX/SYS/KERNEL.S.STAT.txt

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2017-12-22 21:24:30 +00:00
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AUTO 3,1
*--------------------------------------
* # ChMod
* change permissions of a file
* ## C
* `int chmod(const char *pathname, int mode);`
* ## ASM
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* **In:**
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* `>PUSHW mode`
* `>LDYA pathname`
* `>SYSCALL chmod`
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* ## RETURN VALUE
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*--------------------------------------
* only 777-555
*--------------------------------------
K.ChMod jsr PFT.CheckPathYA
bcs .99
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>PULLW K.S.STAT+S.STAT.MODE
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lda K.S.STAT+S.STAT.MODE+1
and /S.STAT.MODE.RU
beq .9
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lda K.S.STAT+S.STAT.MODE
and #S.STAT.MODE.XO+S.STAT.MODE.RO+S.STAT.MODE.XG+S.STAT.MODE.RG+S.STAT.MODE.XU+S.STAT.MODE.RU
cmp #S.STAT.MODE.XO+S.STAT.MODE.RO+S.STAT.MODE.XG+S.STAT.MODE.RG+S.STAT.MODE.XU+S.STAT.MODE.RU
bne .9
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>MLICALL MLIGETFILEINFO
bcs .90
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lda K.MLI.PARAMS+S.FI.A
and #$3D not S.FI.A.RN+S.FI.A.D+S.FI.A.W
ora #S.FI.A.R
tax
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lda K.S.STAT+S.STAT.MODE
tay
bit #S.STAT.MODE.WG
beq .1
txa
ora #S.FI.A.RN
tax
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tya
.1 bit #S.STAT.MODE.WU
beq .2
txa
ora #S.FI.A.D
tax
tya
.2 bit #S.STAT.MODE.WO
beq .3
txa
ora #S.FI.A.W
tax
.3 stx K.MLI.PARAMS+S.FI.A
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>MLICALL MLISETFILEINFO
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rts
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.9 lda #E.SYN
sec
.90 rts
.99 >RET 2
*--------------------------------------
* # FStat
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* Return information about a hFILE
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* ## C
* `int fstat(short int hFILE, struct stat *statbuf);`
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* ## ASM
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* **In:**
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* `>PUSHW statbuf`
* `lda hFILE`
* `>SYSCALL fstat`
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* ## RETURN VALUE
*--------------------------------------
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K.FStat jsr PFT.CheckNodeA
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bcs K.FStat.9
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tax
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lda OF.Table.hPath-1,x
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jsr K.GetMemPtr
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jsr PFT.YAToMLIPATH
jsr K.Stat.I
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bcs K.Stat.9
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lda (pFD) #S.FD.T
bne K.Stat.BLK2SIZE
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ldy #S.FD.REG.REF
lda (pFD),y
sta K.MLI.PARAMS+1
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>MLICALL MLIGETEOF
bcs K.Stat.BLK2SIZE
ldy #S.STAT.SIZE+3
lda #0
sta (ZPPtr1),y
ldx #2
.1 lda K.MLI.PARAMS+2,x
dey
sta (ZPPtr1),y
dex
bpl .1
* clc
rts
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K.FStat.9 >RET 2 discard statbuf
*/--------------------------------------
* # Stat
* Return information about a file
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* ## C
* `int stat(const char *pathname, struct stat *statbuf);`
* ## ASM
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* **In:**
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* `>PUSHW statbuf`
* `>LDYA pathname`
* `>SYSCALL stat`
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* ## RETURN VALUE
*\--------------------------------------
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K.Stat jsr PFT.CheckPathYA
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bcs K.FStat.9 go discard statbuf
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jsr K.Stat.I
bcs K.Stat.9
K.Stat.BLK2SIZE
ldy #S.STAT.SIZE
lda #0
sta (ZPPtr1),y
iny
lda K.MLI.PARAMS+S.FI.UBLKS
asl
sta (ZPPtr1),y
iny
lda K.MLI.PARAMS+S.FI.UBLKS+1
rol
sta (ZPPtr1),y
iny
lda #0
rol
sta (ZPPtr1),y
* clc
K.Stat.9 rts
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K.Stat.I >PULLW ZPPtr1 Get StatBuf
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>MLICALL MLIGETFILEINFO
bcs .9
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lda K.MLI.PARAMS+S.FI.A
jsr STAT.Access2Mode
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.2 phy
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ldy #S.STAT.MODE
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sta (ZPPtr1),y
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iny
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pla
sta (ZPPtr1),y
ldx #K.Stat.DST-K.Stat.SRC
.3 ldy K.Stat.SRC-1,x
lda K.MLI.PARAMS,y
ldy K.Stat.DST-1,x
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sta (ZPPtr1),y
dex
bne .3
clc
.9 rts
*--------------------------------------
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K.Stat.SRC .DA #S.FI.T
.DA #S.FI.AUXTYPE,#S.FI.AUXTYPE+1
.DA #S.FI.UBLKS,#S.FI.UBLKS+1
K.Stat.DST .DA #S.STAT.P.TYPE
.DA #S.STAT.P.AUXTYPE,#S.STAT.P.AUXTYPE+1
.DA #S.STAT.BLOCKS,#S.STAT.BLOCKS+1
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*--------------------------------------
STAT.Access2Mode
and #S.FI.A.FULL
cmp #S.FI.A.FULL
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beq .7
tay
ldx #S.STAT.MODE.RO+S.STAT.MODE.RG+S.STAT.MODE.RU+S.STAT.MODE.XO+S.STAT.MODE.XG+S.STAT.MODE.XU
bit #S.FI.A.W
beq .1
txa
ora #S.STAT.MODE.WO
tax
tya
.1 asl D in C
bpl .2 RN in N
txa
ora #S.STAT.MODE.WG
tax
.2 txa
bcc .8
ora #S.STAT.MODE.WU
.HS 2C BIT ABS
.7 lda #S.STAT.MODE.FO+S.STAT.MODE.FG+S.STAT.MODE.FU rwxrwxrwx
.8 ldy /S.STAT.MODE.RU ??????R??
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STAT.Access2Mode.RTS
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rts
*/-------------------------------------
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* # MKDir
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* create a directory
* ## C
* `int mkdir(const char *pathname, int mode);`
* ## ASM
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* **In:**
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* `>PUSHW mode`
* `>LDYA pathname`
* `>SYSCALL mkdir`
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* ## RETURN VALUE
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* CC : success
* CS : error
* A = EC
*\-------------------------------------
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K.MKDir jsr PFT.CheckPathYA
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bcs STAT.Access2Mode.RTS
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lda #S.FI.T.DIR
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sta K.MLI.PARAMS+4
stz K.MLI.PARAMS+5
stz K.MLI.PARAMS+6
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lda #S.FI.ST.DIR
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jmp IO.MLI.CREATE
*/--------------------------------------
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* # MKFIFO
* return a pathname to a new FIFO
* ## C
* `int mkfifo( char *pathname, int mode );`
* ## ASM
* **In:**
* `>PUSHW mode`
* `>LDYA pathname`
* `>SYSCALL mkfifo`
* ## RETURN VALUE
* CC = OK, CS = ERROR
* A = hFD
*\--------------------------------------
K.MKFIFO >STYA ZPPtr1 pathname buffer
>PULLW K.S.STAT+S.STAT.MODE
>LDYAI 512
jsr K.pipe
bcs STAT.Access2Mode.RTS
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sta K.S.STAT+S.STAT.DEV hFD
tax
ldy #11
lda #0
sta (ZPPtr1),y
dey
txa
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and #$0F
jsr .7
sta (ZPPtr1),y
dey
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txa
lsr
lsr
lsr
lsr
jsr .7
.1 sta (ZPPtr1),y
lda STAT.FIFO-1,y
dey
bpl .1
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bra K.MkNod.I
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.7 ora #$30
cmp #'9'+1
bcc .8
adc #6
.8 rts
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*/--------------------------------------
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* # MkNod
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* Create a special or ordinary file.
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* (CDEV, BDEV, DSOCKS, SSOCK, PIPE)
* ## C
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* `hFILE mknod(const char *pathname, int mode, hFD fd);`
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* ## ASM
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* **In:**
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* `>PUSHB fd`
* `>PUSHW mode`
* `>LDYA pathname`
* `>SYSCALL mknod`
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* ## RETURN VALUE
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* CC = OK, CS = ERROR
* A = hFILE
*\--------------------------------------
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K.MkNod >STYA ZPPtr1 pathname
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>PULLW K.S.STAT+S.STAT.MODE
>PULLB K.S.STAT+S.STAT.DEV
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K.MkNod.I ldx #2
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.1 lda Nod.Table.hPath-2,x
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beq .2
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inx
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cpx #K.Nod.MAX+2
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bne .1
lda #E.OOH
* sec
rts
.2 stx .3+1 Store hFILE
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>LDYA ZPPtr1
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ldx #SYS.StrDup
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jsr K.SYSCALL2.BANK
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bcs .9
txa
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.3 ldx #$ff SELF MODIFIED
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sta Nod.Table.hPath-2,x
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lda K.S.STAT+S.STAT.DEV
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sta Nod.Table.hFD-2,x
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txa hNODE
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clc
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.9 rts
*/--------------------------------------
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* # pipe
* ## C
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* `hFD pipe(int size);`
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* ## ASM
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* `>LDYA size`
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* `>SYSCALL pipe`
* ## RETURN VALUE
* CC = OK, CS = ERROR
* A = hFD
*\--------------------------------------
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K.Pipe sta .1+1 SIZE HI
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.DO AUXPIPE=1
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ldx #SYS.NewStkObj
jsr K.SYSCALL2.AUX Buffer in AUX mem
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.ELSE
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jsr K.GetMem
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.FIN
bcs .99
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stx .8+1 save PIPE buffer
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>LDYAI S.FD.PIPE
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ldx #S.MEM.F.INIT0+S.MEM.F.FD
jsr MEM.GetMem.YAX
bcs .9
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>STYA pFD
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lda #S.FD.T.PIPE
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sta (pFD)
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.1 lda #$ff SELF MODIFIED
ldy #S.FD.PIPE.Free+1
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sta (pFD),y
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ldy #S.FD.PIPE.Size+1
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sta (pFD),y
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ldy #S.FD.PIPE.hMem
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.8 lda #$ff Self Modified
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sta (pFD),y
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txa hFD
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* clc
rts
.9 pha save error code
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lda .8+1 get back PIPE buffer
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.DO AUXPIPE=1
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ldx #SYS.FreeStkObj
jsr K.SYSCALL2.AUX
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.ELSE
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jsr K.FreeMem
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.FIN
pla
sec
.99 rts
*--------------------------------------
MAN
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SAVE USR/SRC/SYS/KERNEL.S.STAT
LOAD USR/SRC/SYS/KERNEL.S
ASM