vt: drop access_ok() calls in unimap ioctls
Done by copy_{from,to}_user(). Signed-off-by: Adam Borowski <kilobyte@angband.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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4f1be1b5d9
Коммит
f8564c93e0
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@ -266,10 +266,6 @@ do_unimap_ioctl(int cmd, struct unimapdesc __user *user_ud, int perm, struct vc_
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if (copy_from_user(&tmp, user_ud, sizeof tmp))
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if (copy_from_user(&tmp, user_ud, sizeof tmp))
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return -EFAULT;
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return -EFAULT;
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if (tmp.entries)
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if (!access_ok(VERIFY_WRITE, tmp.entries,
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tmp.entry_ct*sizeof(struct unipair)))
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return -EFAULT;
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switch (cmd) {
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switch (cmd) {
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case PIO_UNIMAP:
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case PIO_UNIMAP:
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if (!perm)
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if (!perm)
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@ -1170,10 +1166,6 @@ compat_unimap_ioctl(unsigned int cmd, struct compat_unimapdesc __user *user_ud,
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if (copy_from_user(&tmp, user_ud, sizeof tmp))
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if (copy_from_user(&tmp, user_ud, sizeof tmp))
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return -EFAULT;
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return -EFAULT;
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tmp_entries = compat_ptr(tmp.entries);
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tmp_entries = compat_ptr(tmp.entries);
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if (tmp_entries)
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if (!access_ok(VERIFY_WRITE, tmp_entries,
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tmp.entry_ct*sizeof(struct unipair)))
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return -EFAULT;
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switch (cmd) {
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switch (cmd) {
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case PIO_UNIMAP:
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case PIO_UNIMAP:
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if (!perm)
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if (!perm)
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