V5/usr/source/s4/fstat.s

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including files from this version of Unix. 
/ C library -- fstat

/ error = fstat(file, statbuf);

/ int statbuf[17] or
/ char statbuf[34]
/ as appropriate

.globl	_fstat, retrn, cerror

_fstat:
	mov	r5,-(sp)
	mov	sp,r5
	mov	4(r5),r0
	mov	6(r5),0f
	sys	0; 9f
	bec	1f
	jmp	cerror
1:
	clr	r0
	jmp	retrn
.data
9:
	sys	fstat; 0:..