diff options
| -rw-r--r-- | qapi-schema.json | 16 | ||||
| -rw-r--r-- | qemu-char.c | 61 | ||||
| -rw-r--r-- | qmp-commands.hx | 8 |
3 files changed, 83 insertions, 2 deletions
diff --git a/qapi-schema.json b/qapi-schema.json index 462511e904..c70c11840a 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -3019,6 +3019,19 @@ { 'command': 'nbd-server-stop' } ## +# @ChardevFile: +# +# Configuration info for file chardevs. +# +# @in: #optional The name of the input file +# @out: The name of the output file +# +# Since: 1.4 +## +{ 'type': 'ChardevFile', 'data': { '*in' : 'str', + 'out' : 'str' } } + +## # @ChardevBackend: # # Configuration info for the new chardev backend. @@ -3027,7 +3040,8 @@ ## { 'type': 'ChardevDummy', 'data': { } } -{ 'union': 'ChardevBackend', 'data': { 'null' : 'ChardevDummy' } } +{ 'union': 'ChardevBackend', 'data': { 'file' : 'ChardevFile', + 'null' : 'ChardevDummy' } } ## # @ChardevReturn: diff --git a/qemu-char.c b/qemu-char.c index 73a5e37aa7..d447d96805 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -3011,6 +3011,64 @@ QemuOptsList qemu_chardev_opts = { }, }; +#ifdef _WIN32 + +static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp) +{ + HANDLE out; + + if (file->in) { + error_setg(errp, "input file not supported"); + return NULL; + } + + out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL, + OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); + if (out == INVALID_HANDLE_VALUE) { + error_setg(errp, "open %s failed", file->out); + return NULL; + } + return qemu_chr_open_win_file(out); +} + +#else /* WIN32 */ + +static int qmp_chardev_open_file_source(char *src, int flags, + Error **errp) +{ + int fd = -1; + + TFR(fd = qemu_open(src, flags, 0666)); + if (fd == -1) { + error_setg(errp, "open %s: %s", src, strerror(errno)); + } + return fd; +} + +static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp) +{ + int flags, in = -1, out = -1; + + flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY; + out = qmp_chardev_open_file_source(file->out, flags, errp); + if (error_is_set(errp)) { + return NULL; + } + + if (file->in) { + flags = O_RDONLY; + in = qmp_chardev_open_file_source(file->in, flags, errp); + if (error_is_set(errp)) { + qemu_close(out); + return NULL; + } + } + + return qemu_chr_open_fd(in, out); +} + +#endif /* WIN32 */ + ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, Error **errp) { @@ -3025,6 +3083,9 @@ ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, } switch (backend->kind) { + case CHARDEV_BACKEND_KIND_FILE: + chr = qmp_chardev_open_file(backend->file, errp); + break; case CHARDEV_BACKEND_KIND_NULL: chr = qemu_chr_open_null(NULL); break; diff --git a/qmp-commands.hx b/qmp-commands.hx index c9ab37c9b9..4d382f4ffc 100644 --- a/qmp-commands.hx +++ b/qmp-commands.hx @@ -2672,13 +2672,19 @@ Arguments: - "id": the chardev's ID, must be unique (json-string) - "backend": chardev backend type + parameters -Example: +Examples: -> { "execute" : "chardev-add", "arguments" : { "id" : "foo", "backend" : { "type" : "null", "data" : {} } } } <- { "return": {} } +-> { "execute" : "chardev-add", + "arguments" : { "id" : "bar", + "backend" : { "type" : "file", + "data" : { "out" : "/tmp/bar.log" } } } } +<- { "return": {} } + EQMP { |