A2osX/SYS/KERNEL.S.STAT.txt

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NEW
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AUTO 3,1
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*/--------------------------------------
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* # ChMod
* change permissions of a file
* ## C
* `int chmod(const char *pathname, int mode);`
* ## ASM
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* `>PUSHW pathname`
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* `>PUSHW mode`
* `>SYSCALL chmod`
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* ## RETURN VALUE
*\--------------------------------------
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K.ChMod jsr PFT.CheckPath2
bcs STAT.RET4
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jsr STAT.PM
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stz K.MLI.PARAMS+3+S.FIEX.ACL read mode
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>MLICALL MLIACL
bcs .9
>LDYA K.S.STAT+S.STAT.MODE
>STYA K.MLI.PARAMS+3+S.FIEX.ACL.MOD
lda #$57 write mode
sta K.MLI.PARAMS+3+S.FIEX.ACL
>MLICALL MLIACL
.9 rts
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STAT.RET4 inc pStack
STAT.RET3 inc pStack
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inc pStack
inc pStack
rts
*/--------------------------------------
* # 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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* `>PUSHB hFILE`
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* `>PUSHW statbuf`
* `>SYSCALL fstat`
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* ## RETURN VALUE
*\--------------------------------------
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K.FStat ldy #2
jsr PFT.CheckNodeY
bcs STAT.RET3
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>PULLW K.Stat.Store.2+1
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>PULLA
tax
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lda hFDs.hName-1,x get path
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jsr K.GetMemPtr
jsr PFT.YAToMLIPATH
jsr FS.Stat.203
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bcs STAT.RTS
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ldy #S.FD.REG.REF
lda (pFD),y
sta K.MLI.PARAMS+1
>MLICALL MLIGETEOF
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bcs STAT.RTS
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ldx #2
.1 lda K.MLI.PARAMS+2,x
sta K.S.STAT+S.STAT.SIZE,x
dex
bpl .1
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K.Stat.Store ldy #S.STAT-1
K.Stat.Store.1 lda K.S.STAT,y
K.Stat.Store.2 sta $ffff,y SELF MODIFIED
dey
bpl K.Stat.Store.1
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* clc
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STAT.RTS rts
*/--------------------------------------
* # Stat
* Return information about a file
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* ## C
* `int stat(const char *pathname, struct stat *statbuf);`
* ## ASM
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* `>PUSHW pathname`
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* `>PUSHW statbuf`
* `>SYSCALL stat`
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* ## RETURN VALUE
*\--------------------------------------
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K.Stat jsr PFT.CheckPath2
bcs STAT.RET4 go discard statbuf
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>PULLW K.Stat.Store.2+1
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inc pStack
inc pStack
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jsr FS.Stat
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bcc K.Stat.Store
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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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* `>PUSHW pathname`
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* `>PUSHW mode`
* `>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.CheckPath2
bcs STAT.RET4
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jsr STAT.PM
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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 FS.CREATE
*/--------------------------------------
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* # MKFIFO
* return a pathname to a new FIFO
* ## C
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* `hFILE mkfifo(const char *pathname, int mode);`
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* ## ASM
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* `>PUSHW pathname`
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* `>PUSHW mode`
* `>SYSCALL mkfifo`
* ## RETURN VALUE
* CC = OK, CS = ERROR
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* A = hFILE
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*\--------------------------------------
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K.MKFIFO jsr STAT.PM
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>LDYAI 512
jsr K.pipe
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bcs STAT.RTS
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ldy #0
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.1 lda UNISTD.DEVFIFO,y
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sta (ZPPtr1),y fill pathname buffer
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iny
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cpy #9
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bne .1
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lda IO.hFD
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jsr STDIO.A2HexAX
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sta (ZPPtr1),y
txa
iny
sta (ZPPtr1),y
iny
lda #0
sta (ZPPtr1),y
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lda ZPPtr1
clc
adc #5 skip /dev/
sta ZPPtr1
bcc K.MkNod.I
inc ZPPtr1+1
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bra K.MkNod.I
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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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* `>PUSHW pathname`
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* `>PUSHW mode`
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* `>PUSHB fd`
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* `>SYSCALL mknod`
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* ## RETURN VALUE
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* CC = OK, CS = ERROR
* A = hFILE
*\--------------------------------------
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K.MkNod >PULLB IO.hFD
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jsr STAT.PM
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K.MkNod.I lda IO.hFD
jsr DEV.GetFD
bcc .2
jsr DEV.GetFreeFD
bcs .9
lda IO.hFD
sta hFDs-1,x
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.2 stx IO.hFILE
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>LDYA ZPPtr1
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>SYSCALL2 StrDup
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bcs .9
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txa
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ldx IO.hFILE
sta hFDs.hName-1,x store path
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txa hFILE
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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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>SYSCALL2 NewStkObj
bcs .99
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stx .8+1 save PIPE buffer
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lda #S.FD.T.PIPE
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jsr DEV.MkFD
bcs .9
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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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lda IO.hFD
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* clc
rts
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.9 pha save error code
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lda .8+1 get back PIPE buffer
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>SYSCALL2 FreeStkObj
pla
sec
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.99 rts
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*--------------------------------------
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STAT.PM >PULLW K.S.STAT+S.STAT.MODE
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>PULLW ZPPtr1 pathname
rts
*--------------------------------------
MAN
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SAVE usr/src/sys/kernel.s.stat
LOAD usr/src/sys/kernel.s
ASM