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Merge branch 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Browse Source 
Pull compat and uaccess updates from Al Viro:

 - {get,put}_compat_sigset() series

 - assorted compat ioctl stuff

 - more set_fs() elimination

 - a few more timespec64 conversions

 - several removals of pointless access_ok() in places where it was
   followed only by non-__ variants of primitives

* 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (24 commits)
  coredump: call do_unlinkat directly instead of sys_unlink
  fs: expose do_unlinkat for built-in callers
  ext4: take handling of EXT4_IOC_GROUP_ADD into a helper, get rid of set_fs()
  ipmi: get rid of pointless access_ok()
  pi433: sanitize ioctl
  cxlflash: get rid of pointless access_ok()
  mtdchar: get rid of pointless access_ok()
  r128: switch compat ioctls to drm_ioctl_kernel()
  selection: get rid of field-by-field copyin
  VT_RESIZEX: get rid of field-by-field copyin
  i2c compat ioctls: move to ->compat_ioctl()
  sched_rr_get_interval(): move compat to native, get rid of set_fs()
  mips: switch to {get,put}_compat_sigset()
  sparc: switch to {get,put}_compat_sigset()
  s390: switch to {get,put}_compat_sigset()
  ppc: switch to {get,put}_compat_sigset()
  parisc: switch to {get,put}_compat_sigset()
  get_compat_sigset()
  get rid of {get,put}_compat_itimerspec()
  io_getevents: Use timespec64 to represent timeouts
  ...
This commit is contained in:
Linus Torvalds
2017-11-17 11:54:55 -08:00
parent 06ede5f608 96271654f5
commit 93f30c73ec
32 changed files with 506 additions and 819 deletions
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68
drivers/tty/vt/vt_ioctl.c
View File

@@ -843,58 +843,44 @@ int vt_ioctl(struct tty_struct *tty,
case VT_RESIZEX:
{
struct vt_consize __user *vtconsize = up;
ushort ll,cc,vlin,clin,vcol,ccol;
struct vt_consize v;
if (!perm)
return -EPERM;
if (!access_ok(VERIFY_READ, vtconsize,
sizeof(struct vt_consize))) {
ret = -EFAULT;
break;
}
if (copy_from_user(&v, up, sizeof(struct vt_consize)))
return -EFAULT;
/* FIXME: Should check the copies properly */
__get_user(ll, &vtconsize->v_rows);
__get_user(cc, &vtconsize->v_cols);
__get_user(vlin, &vtconsize->v_vlin);
__get_user(clin, &vtconsize->v_clin);
__get_user(vcol, &vtconsize->v_vcol);
__get_user(ccol, &vtconsize->v_ccol);
vlin = vlin ? vlin : vc->vc_scan_lines;
if (clin) {
if (ll) {
if (ll != vlin/clin) {
/* Parameters don't add up */
ret = -EINVAL;
break;
}
} else
ll = vlin/clin;
if (!v.v_vlin)
v.v_vlin = vc->vc_scan_lines;
if (v.v_clin) {
int rows = v.v_vlin/v.v_clin;
if (v.v_rows != rows) {
if (v.v_rows) /* Parameters don't add up */
return -EINVAL;
v.v_rows = rows;
}
}
if (vcol && ccol) {
if (cc) {
if (cc != vcol/ccol) {
ret = -EINVAL;
break;
}
} else
cc = vcol/ccol;
if (v.v_vcol && v.v_ccol) {
int cols = v.v_vcol/v.v_ccol;
if (v.v_cols != cols) {
if (v.v_cols)
return -EINVAL;
v.v_cols = cols;
}
}
if (clin > 32) {
ret = -EINVAL;
break;
}
if (v.v_clin > 32)
return -EINVAL;
for (i = 0; i < MAX_NR_CONSOLES; i++) {
if (!vc_cons[i].d)
continue;
console_lock();
if (vlin)
vc_cons[i].d->vc_scan_lines = vlin;
if (clin)
vc_cons[i].d->vc_font.height = clin;
if (v.v_vlin)
vc_cons[i].d->vc_scan_lines = v.v_vlin;
if (v.v_clin)
vc_cons[i].d->vc_font.height = v.v_clin;
vc_cons[i].d->vc_resize_user = 1;
vc_resize(vc_cons[i].d, cc, ll);
vc_resize(vc_cons[i].d, v.v_cols, v.v_rows);
console_unlock();
}
break;