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int /*SUPPRESS 590*/
do_truncate(TARG,arg,gimme,arglast)
STR *TARG;
register ARG *arg;
int gimme;
int *arglast;
{
register ARRAY *ary = stack;
register int sp = arglast[0] + 1;
off_t len = (off_t)str_gnum(ary->ary_array[sp+1]);
int result = 1;
STAB *tmpstab;
#if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE)
#ifdef HAS_TRUNCATE
if ((arg[1].arg_type & A_MASK) == A_WORD) {
tmpstab = arg[1].arg_ptr.arg_stab;
if (!stab_io(tmpstab) || !stab_io(tmpstab)->ifp ||
ftruncate(fileno(stab_io(tmpstab)->ifp), len) < 0)
result = 0;
}
else if (truncate(str_get(ary->ary_array[sp]), len) < 0)
result = 0;
#else
if ((arg[1].arg_type & A_MASK) == A_WORD) {
tmpstab = arg[1].arg_ptr.arg_stab;
if (!stab_io(tmpstab) || !stab_io(tmpstab)->ifp ||
chsize(fileno(stab_io(tmpstab)->ifp), len) < 0)
result = 0;
}
else {
int tmpfd;
if ((tmpfd = open(str_get(ary->ary_array[sp]), 0)) < 0)
result = 0;
else {
if (chsize(tmpfd, len) < 0)
result = 0;
close(tmpfd);
}
}
#endif
if (result)
str_sset(TARG,&str_yes);
else
str_sset(TARG,&str_undef);
STABSET(TARG);
ary->ary_array[sp] = TARG;
return sp;
#else
fatal("truncate not implemented");
#endif
}
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