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authorGerd Hoffmann <kraxel@redhat.com>2012-12-19 13:13:57 +0100
committerGerd Hoffmann <kraxel@redhat.com>2013-01-16 06:58:54 +0100
commitffbdbe59acc5f175d6c05a5d90f0b7c865fafd5b (patch)
treea3ffc447ff9a7f2dc14a7c05c363525b608cbd99 /qemu-char.c
parentf10889089153edf032476b45229477866a9ca0b1 (diff)
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chardev: add file chardev support to chardev-add (qmp)
Add support for file chardevs. Output file is mandatory, input file is optional. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'qemu-char.c')
-rw-r--r--qemu-char.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/qemu-char.c b/qemu-char.c
index 73a5e37..d447d96 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;