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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2017-06-26 13:19:16 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2018-01-24 19:13:45 -0500 |
| commit | 36fd633ec98acd2028585c22128fcaa3da6d5770 (patch) | |
| tree | 1fa77e8bf1662dea936b52107a0d39485110edb1 /sound | |
| parent | Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue (diff) | |
| download | linux-dev-36fd633ec98acd2028585c22128fcaa3da6d5770.tar.xz linux-dev-36fd633ec98acd2028585c22128fcaa3da6d5770.zip | |
net: separate SIOCGIFCONF handling from dev_ioctl()
Only two of dev_ioctl() callers may pass SIOCGIFCONF to it.
Separating that codepath from the rest of dev_ioctl() allows both
to simplify dev_ioctl() itself (all other cases work with struct ifreq *)
*and* seriously simplify the compat side of that beast: all it takes
is passing to inet_gifconf() an extra argument - the size of individual
records (sizeof(struct ifreq) or sizeof(struct compat_ifreq)). With
dev_ifconf() called directly from sock_do_ioctl()/compat_dev_ifconf()
that's easy to arrange.
As the result, compat side of SIOCGIFCONF doesn't need any
allocations, copy_in_user() back and forth, etc.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'sound')
0 files changed, 0 insertions, 0 deletions