diff options
Diffstat (limited to 'util')
| -rw-r--r-- | util/qemu-sockets.c | 54 |
1 files changed, 42 insertions, 12 deletions
diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c index 38f8217..8af0278 100644 --- a/util/qemu-sockets.c +++ b/util/qemu-sockets.c @@ -860,10 +860,29 @@ static int vsock_parse(VsockSocketAddress *addr, const char *str, #ifndef _WIN32 +static bool saddr_is_abstract(UnixSocketAddress *saddr) +{ +#ifdef CONFIG_LINUX + return saddr->abstract; +#else + return false; +#endif +} + +static bool saddr_is_tight(UnixSocketAddress *saddr) +{ +#ifdef CONFIG_LINUX + return !saddr->has_tight || saddr->tight; +#else + return false; +#endif +} + static int unix_listen_saddr(UnixSocketAddress *saddr, int num, Error **errp) { + bool abstract = saddr_is_abstract(saddr); struct sockaddr_un un; int sock, fd; char *pathbuf = NULL; @@ -877,7 +896,7 @@ static int unix_listen_saddr(UnixSocketAddress *saddr, return -1; } - if (saddr->path && saddr->path[0]) { + if (saddr->path[0] || abstract) { path = saddr->path; } else { const char *tmpdir = getenv("TMPDIR"); @@ -887,10 +906,10 @@ static int unix_listen_saddr(UnixSocketAddress *saddr, pathlen = strlen(path); if (pathlen > sizeof(un.sun_path) || - (saddr->abstract && pathlen > (sizeof(un.sun_path) - 1))) { + (abstract && pathlen > (sizeof(un.sun_path) - 1))) { error_setg(errp, "UNIX socket path '%s' is too long", path); error_append_hint(errp, "Path must be less than %zu bytes\n", - saddr->abstract ? sizeof(un.sun_path) - 1 : + abstract ? sizeof(un.sun_path) - 1 : sizeof(un.sun_path)); goto err; } @@ -912,7 +931,7 @@ static int unix_listen_saddr(UnixSocketAddress *saddr, close(fd); } - if (!saddr->abstract && unlink(path) < 0 && errno != ENOENT) { + if (!abstract && unlink(path) < 0 && errno != ENOENT) { error_setg_errno(errp, errno, "Failed to unlink socket %s", path); goto err; @@ -922,10 +941,10 @@ static int unix_listen_saddr(UnixSocketAddress *saddr, un.sun_family = AF_UNIX; addrlen = sizeof(un); - if (saddr->abstract) { + if (abstract) { un.sun_path[0] = '\0'; memcpy(&un.sun_path[1], path, pathlen); - if (saddr->tight) { + if (saddr_is_tight(saddr)) { addrlen = offsetof(struct sockaddr_un, sun_path) + 1 + pathlen; } } else { @@ -952,6 +971,7 @@ err: static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) { + bool abstract = saddr_is_abstract(saddr); struct sockaddr_un un; int sock, rc; size_t pathlen; @@ -970,10 +990,10 @@ static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) pathlen = strlen(saddr->path); if (pathlen > sizeof(un.sun_path) || - (saddr->abstract && pathlen > (sizeof(un.sun_path) - 1))) { + (abstract && pathlen > (sizeof(un.sun_path) - 1))) { error_setg(errp, "UNIX socket path '%s' is too long", saddr->path); error_append_hint(errp, "Path must be less than %zu bytes\n", - saddr->abstract ? sizeof(un.sun_path) - 1 : + abstract ? sizeof(un.sun_path) - 1 : sizeof(un.sun_path)); goto err; } @@ -982,10 +1002,10 @@ static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) un.sun_family = AF_UNIX; addrlen = sizeof(un); - if (saddr->abstract) { + if (abstract) { un.sun_path[0] = '\0'; memcpy(&un.sun_path[1], saddr->path, pathlen); - if (saddr->tight) { + if (saddr_is_tight(saddr)) { addrlen = offsetof(struct sockaddr_un, sun_path) + 1 + pathlen; } } else { @@ -1270,10 +1290,20 @@ socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, addr = g_new0(SocketAddress, 1); addr->type = SOCKET_ADDRESS_TYPE_UNIX; - if (su->sun_path[0]) { - addr->u.q_unix.path = g_strndup(su->sun_path, sizeof(su->sun_path)); +#ifdef CONFIG_LINUX + if (!su->sun_path[0]) { + /* Linux abstract socket */ + addr->u.q_unix.path = g_strndup(su->sun_path + 1, + sizeof(su->sun_path) - 1); + addr->u.q_unix.has_abstract = true; + addr->u.q_unix.abstract = true; + addr->u.q_unix.has_tight = true; + addr->u.q_unix.tight = salen < sizeof(*su); + return addr; } +#endif + addr->u.q_unix.path = g_strndup(su->sun_path, sizeof(su->sun_path)); return addr; } #endif /* WIN32 */ |