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| author | Eric Blake | 2016-05-12 00:39:40 +0200 |
|---|---|---|
| committer | Paolo Bonzini | 2016-06-16 18:39:05 +0200 |
| commit | f57e2416aaeb39c32946d282768ece7ff619b423 (patch) | |
| tree | 8639bbec9008f7383d80207c9b286976898b4a72 /include/block | |
| parent | nbd: Group all Linux-specific ioctl code in one place (diff) | |
| download | qemu-f57e2416aaeb39c32946d282768ece7ff619b423.tar.gz qemu-f57e2416aaeb39c32946d282768ece7ff619b423.tar.xz qemu-f57e2416aaeb39c32946d282768ece7ff619b423.zip | |
nbd: Clean up ioctl handling of qemu-nbd -c
The kernel ioctl() interface into NBD is limited to 'unsigned long';
we MUST pass in input with that type (and not int or size_t, as
there may be platform ABIs where the wrong types promote incorrectly
through var-args). Furthermore, on 32-bit platforms, the kernel
is limited to a maximum export size of 2T (our BLKSIZE of 512 times
a SIZE_BLOCKS constrained by 32 bit unsigned long).
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1463006384-7734-8-git-send-email-eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/block')
0 files changed, 0 insertions, 0 deletions