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net: validate HWTSTAMP ioctl parameters

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This patch adds a sanity check on the values provided by user space for
the hardware time stamping configuration. If the values lie outside of
the absolute limits, then the ioctl request will be denied.

Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Richard Cochran 2011-10-19 17:00:35 -04:00 • committed by David S. Miller
parent 850a545bd8
commit 4dc360c5e7
2 changed files with 60 additions and 2 deletions
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4
include/linux/net_tstamp.h
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@ -45,7 +45,7 @@ struct hwtstamp_config {
};
/* possible values for hwtstamp_config->tx_type */
enum {
enum hwtstamp_tx_types {
/*
* No outgoing packet will need hardware time stamping;
* should a packet arrive which asks for it, no hardware
@ -72,7 +72,7 @@ enum {
};
/* possible values for hwtstamp_config->rx_filter */
enum {
enum hwtstamp_rx_filters {
/* time stamp no incoming packet at all */
HWTSTAMP_FILTER_NONE,