void
sysfwstat(Ar0* ar0, ...)
{
Chan *c;
int fd;
uint8_t *p;
usize n;
va_list list;
va_start(list, ar0);
/*
* int fwstat(int fd, uchar* edir, int nedir);
* should really be
* usize wstat(int fd, uchar* edir, usize nedir);
* but returning an unsigned is probably too
* radical.
*/
fd = va_arg(list, int);
p = va_arg(list, uint8_t*);
n = va_arg(list, usize);
p = validaddr(p, n, 0);
validstat(p, n);
c = fdtochan(fd, -1, 1, 1);
va_end(list);
ar0->l = wstat(c, p, n);
}
void
syswstat(Ar0* ar0, ...)
{
Chan *c;
char *aname;
uint8_t *p;
usize n;
va_list list;
va_start(list, ar0);
/*
* int wstat(char* name, uchar* edir, int nedir);
* should really be
* usize wstat(char* name, uchar* edir, usize nedir);
* but returning an unsigned is probably too
* radical.
*/
aname = va_arg(list, char*);
p = va_arg(list, uint8_t*);
n = va_arg(list, usize);
p = validaddr(p, n, 0);
validstat(p, n);
c = namec(validaddr(aname, 1, 0), Aaccess, 0, 0);
va_end(list);
ar0->l = wstat(c, p, n);
}
long
sysfwstat(ulong *arg)
{
Chan *c;
uint l;
l = arg[2];
validaddr(arg[1], l, 0);
validstat((uchar*)arg[1], l);
c = fdtochan(arg[0], -1, 1, 1);
return wstat(c, (uchar*)arg[1], l);
}
long
syswstat(ulong *arg)
{
Chan *c;
uint l;
l = arg[2];
validaddr(arg[1], l, 0);
validstat((uchar*)arg[1], l);
validaddr(arg[0], 1, 0);
c = namec((char*)arg[0], Aaccess, 0, 0);
return wstat(c, (uchar*)arg[1], l);
}
long
sysfwstat(uint32 *arg)
{
Chan *c;
uint l;
uchar *p;
l = arg[2];
p = uvalidaddr(arg[1], l, 0);
validstat(p, l);
c = fdtochan(arg[0], -1, 1, 1);
return wstat(c, p, l);
}
long
syswstat(uint32 *arg)
{
Chan *c;
uint l;
char *name;
uchar *p;
l = arg[2];
p = uvalidaddr(arg[1], l, 0);
validstat(p, l);
name = uvalidaddr(arg[0], 1, 0);
c = namec(name, Aaccess, 0, 0);
return wstat(c, p, l);
}
int sysfwstat(int fd, uint8_t * buf, int n)
{
ERRSTACK(2);
struct chan *c;
if (waserror()) {
poperror();
return -1;
}
validstat(buf, n, 0);
c = fdtochan(¤t->open_files, fd, -1, 1, 1);
if (waserror()) {
cclose(c);
nexterror();
}
n = devtab[c->type].wstat(c, buf, n);
poperror();
cclose(c);
poperror();
return n;
}