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authorMarcelo Tosatti <marcelo.tosatti@cyclades.com>2005-11-07 00:59:34 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-07 07:53:39 -0800
commite3f17f0f6e98f58edb13cb38810d93e6d4808e68 (patch)
treec442f18da80497cc45644e41e29ac0efe96498a7 /drivers/char
parent796f8d9b98fc92a5e9aaea8cf932957850332f51 (diff)
[PATCH] Only disallow _setting_ of function key string
Mikael Pettersson <mikpe@csd.uu.se> noted that the current 2.6-git (and 2.4) patch to disallow KDSKBSENT for unpriviledged users should be less restrictive allowing reading of current function key string entry, but not writing. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/vt_ioctl.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c
index 003dda147cd0..24011e7c81ff 100644
--- a/drivers/char/vt_ioctl.c
+++ b/drivers/char/vt_ioctl.c
@@ -80,6 +80,9 @@ do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm, struct kbd_str
if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry)))
return -EFAULT;
+ if (!capable(CAP_SYS_TTY_CONFIG))
+ perm = 0;
+
switch (cmd) {
case KDGKBENT:
key_map = key_maps[s];
@@ -193,7 +196,7 @@ do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
int ret;
if (!capable(CAP_SYS_TTY_CONFIG))
- return -EPERM;
+ perm = 0;
kbs = kmalloc(sizeof(*kbs), GFP_KERNEL);
if (!kbs) {