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net_tstamp: Add SIOCGHWTSTAMP ioctl to match SIOCSHWTSTAMP

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SIOCSHWTSTAMP returns the real configuration to the application
using it, but there is currently no way for any other
application to find out the configuration non-destructively.
Add a new ioctl for this, making it unprivileged.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This commit is contained in:
Ben Hutchings 2013-11-14 01:19:29 +00:00
commit fd468c74bd
5 changed files with 19 additions and 10 deletions
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1
net/socket.c
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@ -3231,6 +3231,7 @@ static int compat_sock_ioctl_trans(struct file *file, struct socket *sock,
case SIOCBONDSLAVEINFOQUERY:
case SIOCBONDINFOQUERY:
case SIOCSHWTSTAMP:
case SIOCGHWTSTAMP:
return compat_ifr_data_ioctl(net, cmd, argp);
case FIOSETOWN: