diff options
| author | Markus Armbruster <armbru@redhat.com> | 2020-11-02 10:44:22 +0100 |
|---|---|---|
| committer | Daniel P. Berrangé <berrange@redhat.com> | 2020-11-03 13:17:25 +0000 |
| commit | 8acefc79deaab1c7ee2ab07b540b0e3edf0f9f47 (patch) | |
| tree | 1481759a0b868fe0ecef50509c97feee5063eced /qapi | |
| parent | ef298e3826e574c712d10e38a5f2a3629d6f5e01 (diff) | |
sockets: Make abstract UnixSocketAddress depend on CONFIG_LINUX
The abstract socket namespace is a non-portable Linux extension. An
attempt to use it elsewhere should fail with ENOENT (the abstract
address looks like a "" pathname, which does not resolve). We report
this failure like
Failed to connect socket abc: No such file or directory
Tolerable, although ENOTSUP would be better.
However, introspection lies: it has @abstract regardless of host
support. Easy enough to fix: since Linux provides them since 2.2,
'if': 'defined(CONFIG_LINUX)' should do.
The above failure becomes
Parameter 'backend.data.addr.data.abstract' is unexpected
I consider this an improvement.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Diffstat (limited to 'qapi')
| -rw-r--r-- | qapi/sockets.json | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/qapi/sockets.json b/qapi/sockets.json index c0c640a5b0..2e83452797 100644 --- a/qapi/sockets.json +++ b/qapi/sockets.json @@ -74,18 +74,20 @@ # Captures a socket address in the local ("Unix socket") namespace. # # @path: filesystem path to use -# @tight: pass a socket address length confined to the minimum length of the -# abstract string, rather than the full sockaddr_un record length -# (only matters for abstract sockets, default true). (Since 5.1) -# @abstract: whether this is an abstract address, default false. (Since 5.1) +# @abstract: if true, this is a Linux abstract socket address. @path +# will be prefixed by a null byte, and optionally padded +# with null bytes. Defaults to false. (Since 5.1) +# @tight: if false, pad an abstract socket address with enough null +# bytes to make it fill struct sockaddr_un member sun_path. +# Defaults to true. (Since 5.1) # # Since: 1.3 ## { 'struct': 'UnixSocketAddress', 'data': { 'path': 'str', - '*tight': 'bool', - '*abstract': 'bool' } } + '*abstract': { 'type': 'bool', 'if': 'defined(CONFIG_LINUX)' }, + '*tight': { 'type': 'bool', 'if': 'defined(CONFIG_LINUX)' } } } ## # @VsockSocketAddress: |