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| author | Markus Armbruster | 2020-11-02 10:44:22 +0100 |
|---|---|---|
| committer | Daniel P. Berrangé | 2020-11-03 14:17:25 +0100 |
| commit | 8acefc79deaab1c7ee2ab07b540b0e3edf0f9f47 (patch) | |
| tree | 1481759a0b868fe0ecef50509c97feee5063eced /chardev | |
| parent | sockets: Bypass "replace empty @path" for abstract unix sockets (diff) | |
| download | qemu-8acefc79deaab1c7ee2ab07b540b0e3edf0f9f47.tar.gz qemu-8acefc79deaab1c7ee2ab07b540b0e3edf0f9f47.tar.xz qemu-8acefc79deaab1c7ee2ab07b540b0e3edf0f9f47.zip | |
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 'chardev')
| -rw-r--r-- | chardev/char-socket.c | 6 | ||||
| -rw-r--r-- | chardev/char.c | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/chardev/char-socket.c b/chardev/char-socket.c index 27a2954f47..213a4c8dd0 100644 --- a/chardev/char-socket.c +++ b/chardev/char-socket.c @@ -447,12 +447,14 @@ static char *qemu_chr_socket_address(SocketChardev *s, const char *prefix) const char *tight = "", *abstract = ""; UnixSocketAddress *sa = &s->addr->u.q_unix; +#ifdef CONFIG_LINUX if (sa->has_abstract && sa->abstract) { abstract = ",abstract"; if (sa->has_tight && sa->tight) { tight = ",tight"; } } +#endif return g_strdup_printf("%sunix:%s%s%s%s", prefix, sa->path, abstract, tight, @@ -1398,8 +1400,10 @@ static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend, const char *host = qemu_opt_get(opts, "host"); const char *port = qemu_opt_get(opts, "port"); const char *fd = qemu_opt_get(opts, "fd"); +#ifdef CONFIG_LINUX bool tight = qemu_opt_get_bool(opts, "tight", true); bool abstract = qemu_opt_get_bool(opts, "abstract", false); +#endif SocketAddressLegacy *addr; ChardevSocket *sock; @@ -1451,10 +1455,12 @@ static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend, addr->type = SOCKET_ADDRESS_LEGACY_KIND_UNIX; q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1); q_unix->path = g_strdup(path); +#ifdef CONFIG_LINUX q_unix->has_tight = true; q_unix->tight = tight; q_unix->has_abstract = true; q_unix->abstract = abstract; +#endif } else if (host) { addr->type = SOCKET_ADDRESS_LEGACY_KIND_INET; addr->u.inet.data = g_new(InetSocketAddress, 1); diff --git a/chardev/char.c b/chardev/char.c index 78553125d3..aa4282164a 100644 --- a/chardev/char.c +++ b/chardev/char.c @@ -928,6 +928,7 @@ QemuOptsList qemu_chardev_opts = { },{ .name = "logappend", .type = QEMU_OPT_BOOL, +#ifdef CONFIG_LINUX },{ .name = "tight", .type = QEMU_OPT_BOOL, @@ -935,6 +936,7 @@ QemuOptsList qemu_chardev_opts = { },{ .name = "abstract", .type = QEMU_OPT_BOOL, +#endif }, { /* end of list */ } }, |