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C!T ROM 2
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ctrom_ii_b
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PROGRAM
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C
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SMALL_C
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RENAME.C
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1987-10-04
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768b
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36 lines
#define NOCCARGC /* no argument count passing */
#include stdio.h
#include clib.def
/*
** Rename a file.
** from = address of old filename.
** to = address of new filename.
** Returns NULL on success, else ERR.
*/
rename(from,to) char *from, *to; {
return(Urename(from,to));
}
Urename(from, to) char *from, *to; {
#asm
POP SI ;Return address
POP DI ;New name address
POP DX ;Current name address
PUSH DX ;Restore
PUSH DI
PUSH SI
MOV AX,DS
MOV ES,AX ;Set extra segment as our own
MOV AH,56H ;Rename
INT 21H
JNC URENAM1
MOV _ERRNO,AX
MOV AX,-2
Urenam1:
MOV BX,AX
XOR CX,CX ;Zero in CX
EXTRN _ERRNO:WORD
#endasm
}