long
sys_fstat(ulong *arg)
{
Chan *c;
char *name;
uint l;
uchar buf[128]; /* old DIRLEN plus a little should be plenty */
char strs[128];
Dir d;
char old[] = "old fstat system call - recompile";
validaddr(arg[1], 116, 1);
c = fdtochan(arg[0], -1, 0, 1);
if(waserror()){
cclose(c);
nexterror();
}
l = devtab[c->type]->stat(c, buf, sizeof buf);
/* buf contains a new stat buf; convert to old. yuck. */
if(l <= BIT16SZ) /* buffer too small; time to face reality */
error(old);
name = pathlast(c->path);
if(name)
l = dirsetname(name, strlen(name), buf, l, sizeof buf);
l = convM2D(buf, l, &d, strs);
if(l == 0)
error(old);
packoldstat((uchar*)arg[1], &d);
poperror();
cclose(c);
return 0;
}
long
sysstat(uint32 *arg)
{
char *name;
Chan *c;
uint l;
uchar *p;
l = arg[2];
p = uvalidaddr(arg[1], l, 1);
name = uvalidaddr(arg[0], 1, 0);
c = namec(name, Aaccess, 0, 0);
if(waserror()){
cclose(c);
nexterror();
}
l = devtab[c->type]->stat(c, p, l);
name = pathlast(c->path);
if(name)
l = dirsetname(name, strlen(name), p, l, arg[2]);
poperror();
cclose(c);
return l;
}
long
sys_stat(uint32 *arg)
{
Chan *c;
uint l;
uchar buf[128]; /* old DIRLEN plus a little should be plenty */
char strs[128], *name, *elem;
Dir d;
char old[] = "old stat system call - recompile";
uchar *p;
p = uvalidaddr(arg[1], 116, 1);
name = uvalidaddr(arg[0], 1, 0);
c = namec(name, Aaccess, 0, 0);
if(waserror()){
cclose(c);
nexterror();
}
l = devtab[c->type]->stat(c, buf, sizeof buf);
/* buf contains a new stat buf; convert to old. yuck. */
if(l <= BIT16SZ) /* buffer too small; time to face reality */
error(old);
elem = pathlast(c->path);
if(elem)
l = dirsetname(elem, strlen(elem), buf, l, sizeof buf);
l = convM2D(buf, l, &d, strs);
if(l == 0)
error(old);
packoldstat(p, &d);
poperror();
cclose(c);
return 0;
}
/*
* Returns a cvs path allocated with malloc() containing absolute pathname to a
* file in cvs mode which can reside in the attic. XXX: filename has really no
* restrictions.
*/
char *
cvspath(const char *prefix, const char *file, int attic)
{
const char *last;
char *path;
last = pathlast(file);
if (attic)
xasprintf(&path, "%s/%.*sAttic/%s", prefix, (int)(last - file),
file, last);
else
xasprintf(&path, "%s/%s", prefix, file);
return (path);
}
void
sysstat(Ar0* ar0, ...)
{
Proc *up = externup();
char *aname;
Chan *c;
usize n;
int r;
uint8_t *p;
va_list list;
va_start(list, ar0);
/*
* int stat(char* name, uchar* edir, int nedir);
* should really be
* usize stat(char* name, uchar* edir, usize nedir);
* but returning an unsigned is probably too
* radical.
*/
aname = va_arg(list, char*);
aname = validaddr(aname, 1, 0);
p = va_arg(list, uint8_t*);
n = va_arg(list, usize);
va_end(list);
p = validaddr(p, n, 1);
c = namec(aname, Aaccess, 0, 0);
if(waserror()){
cclose(c);
nexterror();
}
r = c->dev->stat(c, p, n);
aname = pathlast(c->path);
if(aname)
r = dirsetname(aname, strlen(aname), p, r, n);
poperror();
cclose(c);
ar0->i = r;
}