A2osX/SYS/KERNEL.S.STAT.txt
2019-01-11 16:06:05 +00:00

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NEW
PREFIX
AUTO 4,1
*--------------------------------------
* # FStat
* Return information about a hFILE
* ## C
* `int fstat(short int hFILE, struct stat *statbuf);`
* ## ASM
* **In:**
* `>PUSHW statbuf`
* `lda hFILE`
* `>SYSCALL fstat`
* ## RETURN VALUE
*--------------------------------------
K.FStat jsr PFT.CheckNodeA
bcs K.FStat.9
tax
lda OF.Table.hPath,x
jsr K.GetMemPtr
jsr PFT.YAToMLIPATH
jsr K.Stat.I
bcs K.Stat.9
lda (pFD) #S.FD.T
bne K.Stat.BLK2SIZE
ldy #S.FD.REG.REF
lda (pFD),y
sta K.MLI.PARAMS+1
>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
K.FStat.9 >RET 2 discard statbuf
*/--------------------------------------
* # Stat
* Return information about a file
* ## C
* `int stat(const char *pathname, struct stat *statbuf);`
* ## ASM
* **In:**
* `>PUSHW statbuf`
* `>LDYA pathname`
* `>SYSCALL stat`
* ## RETURN VALUE
*\--------------------------------------
K.Stat jsr PFT.CheckPathYA
bcs K.FStat.9 go discard statbuf
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
K.Stat.I >PULLW ZPPtr1 Get StatBuf
>MLICALL MLIGETFILEINFO
bcs .9
ldx K.MLI.PARAMS+S.FI.A
lda #S.STAT.MODE.XO+S.STAT.MODE.WO+S.STAT.MODE.RO
cpx #S.FI.A.FULL
beq .2
lda #S.STAT.MODE.XO+S.STAT.MODE.RO
cpx #S.FI.A.R
beq .2
lda #0
.2 ldy #S.STAT.MODE
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
sta (ZPPtr1),y
dex
bne .3
clc
.9 rts
*--------------------------------------
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
*/-------------------------------------
* # MKDir
* create a directory
* ## C
* `int mkdir(const char *pathname, int mode);`
* ## ASM
* **In:**
* `>PUSHW mode`
* `>LDYA pathname`
* `>SYSCALL mkdir`
* ## RETURN VALUE
* CC : success
* CS : error
* A = EC
*\-------------------------------------
K.MKDir jsr PFT.CheckPathYA
bcs K.Stat.9
lda #S.FI.T.DIR
sta K.MLI.PARAMS+4
stz K.MLI.PARAMS+5
stz K.MLI.PARAMS+6
lda #S.FI.ST.DIR
jmp IO.MLI.CREATE
*/--------------------------------------
* # MkNod
* Create a special or ordinary file.
* (CDEV, BDEV, DSOCKS, SSOCK, PIPE)
* ## C
* `hFILE mknod(const char *pathname, int mode, hFD fd);`
* ## ASM
* **In:**
* `>PUSHB fd`
* `>PUSHW mode`
* `>LDYA pathname`
* `>SYSCALL mknod`
* ## RETURN VALUE
* CC = OK, CS = ERROR
* A = hFILE
*\--------------------------------------
K.MkNod >STYA ZPPtr1 pathname
>PULLW K.S.STAT+S.STAT.MODE
>PULLB K.S.STAT+S.STAT.DEV
jsr K.GetMemPtr
bcs K.MKNOD.RTS
>STYA pFD
>LDYA ZPPtr1
ldx K.S.STAT+S.STAT.DEV
jsr STAT.NewhNodeYAX
bcs K.MKNOD.RTS
lda (pFD) #S.FD.T
tax
jmp (.8,x)
.8 .DA STDIO.IOERR REG
.DA STDIO.IOERR DIR
.DA STAT.MKNOD.CDEV
.DA STAT.MKNOD.BDEV
.DA STDIO.IOERR LNK
.DA STAT.MKNOD.DSOCK
.DA STAT.MKNOD.SSOCK
.DA STAT.MKNOD.PIPE
*--------------------------------------
STAT.MKNOD.CDEV
STAT.MKNOD.BDEV
STAT.MKNOD.DSOCK
STAT.MKNOD.SSOCK
STAT.MKNOD.PIPE
clc
K.MKNOD.RTS rts
*/--------------------------------------
* # MKFIFO
* return a hFILE to a new FIFO
* ## C
* `hFILE mkfifo(const char *pathname, int mode);`
* ## ASM
* **In:**
* `>PUSHW mode`
* `>LDYA pathname`
* `>SYSCALL mkfifo`
* ## RETURN VALUE
* CC = OK, CS = ERROR
* A = hFILE
*\--------------------------------------
K.MKFIFO >LDYAI K.PIPE.SIZE
jsr K.GetMem
bcs .99
stx .1+1 save PIPE buffer
>LDYAI S.FD.PIPE
ldx #S.MEM.F.INIT0+S.MEM.F.FD
jsr MEM.GetMem.YAX
bcs .9
>STYA pFD
ldy #S.FD.T
lda #S.FD.T.PIPE
sta (pFD),y
iny S.FD.PIPE.hMem
.1 lda #$ff Self Modified
sta (pFD),y
txa
clc
rts
.9 pha save error code
lda .1+1 get back PIPE buffer
jsr K.FreeMem
pla
sec
.99 rts
*--------------------------------------
STAT.NewhNodeYAX
pha
stx .4+1 Store hFD
ldx #0
.1 lda Nod.Table.hFD,x
beq .2
inx
cpx #K.Nod.MAX
bne .1
pla
lda #E.OOH
* sec
rts
.2 stx .3+1 Store hFILE
pla
>SYSCALL StrDup
bcs .9
txa
.3 ldx #$ff SELF MODIFIED
sta Nod.Table.hPath,x
.4 lda #$ff SELF MODIFIED
sta Nod.Table.hFD,x
txa hNODE
clc
.9 rts
*--------------------------------------
MAN
SAVE USR/SRC/SYS/KERNEL.S.STAT
LOAD USR/SRC/SYS/KERNEL.S
ASM