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dm: virtio: refine console options parse code

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Refine the virtio-console options parse code, so that no need to pass
all the variables as parameters to the backend adding function.

Tracked-On: #3232
Signed-off-by: Conghui Chen <conghui.chen@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
This commit is contained in:
Conghui Chen 2019-06-06 02:54:31 +08:00 committed by ACRN System Integration
parent ce6e663f6c
commit c0bffc2f58
1 changed files with 68 additions and 69 deletions
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135
devicemodel/hw/pci/virtio/virtio_console.c
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@ -759,14 +759,70 @@ virtio_console_config_backend(struct virtio_console_backend *be)
return 0;
}
static enum virtio_console_be_type
virtio_console_get_be_type(const char *backend)
{
int i;
for (i = 0; i < VIRTIO_CONSOLE_BE_MAX; i++)
if (strcasecmp(backend, virtio_console_be_table[i]) == 0)
return i;
return VIRTIO_CONSOLE_BE_INVALID;
}
static int
virtio_console_add_backend(struct virtio_console *console,
const char *name, const char *path,
enum virtio_console_be_type be_type,
bool is_console)
virtio_console_add_backend(struct virtio_console *console, char *opts)
{
struct virtio_console_backend *be;
int error = 0, fd = -1;
bool is_console = false;
char *backend = NULL;
char *portname = NULL;
char *portpath = NULL;
char *opt;
enum virtio_console_be_type be_type = VIRTIO_CONSOLE_BE_INVALID;
/* virtio-console,[@]stdio|tty|pty|file:portname[=portpath]
* [,[@]stdio|tty|pty|file:portname[=portpath]]
*/
while ((opt = strsep(&opts, ",")) != NULL) {
backend = strsep(&opt, ":");
if (backend == NULL) {
WPRINTF(("vtcon: no backend is specified!\n"));
error = -1;
goto parse_fail;
}
if (backend[0] == '@') {
is_console = true;
backend++;
} else
is_console = false;
be_type = virtio_console_get_be_type(backend);
if (be_type == VIRTIO_CONSOLE_BE_INVALID) {
WPRINTF(("vtcon: invalid backend %s!\n",
backend));
error = -1;
goto parse_fail;
}
if (opt != NULL) {
portname = strsep(&opt, "=");
portpath = opt;
if (portpath == NULL
&& be_type != VIRTIO_CONSOLE_BE_STDIO
&& be_type != VIRTIO_CONSOLE_BE_PTY
&& be_type != VIRTIO_CONSOLE_BE_SOCKET) {
WPRINTF(("vtcon: portpath missing for %s\n",
portname));
error = -1;
goto parse_fail;
}
}
}
be = calloc(1, sizeof(struct virtio_console_backend));
if (be == NULL) {
@ -774,7 +830,7 @@ virtio_console_add_backend(struct virtio_console *console,
goto out;
}
fd = virtio_console_open_backend(path, be_type);
fd = virtio_console_open_backend(portpath, be_type);
if (fd < 0) {
error = -1;
goto out;
@ -782,7 +838,7 @@ virtio_console_add_backend(struct virtio_console *console,
be->fd = fd;
be->be_type = be_type;
be->portpath = path;
be->portpath = portpath;
if (virtio_console_config_backend(be) < 0) {
WPRINTF(("vtcon: virtio_console_config_backend failed\n"));
@ -790,7 +846,7 @@ virtio_console_add_backend(struct virtio_console *console,
goto out;
}
be->port = virtio_console_add_port(console, name,
be->port = virtio_console_add_port(console, portname,
virtio_console_backend_write, be, is_console);
if (be->port == NULL) {
WPRINTF(("vtcon: virtio_console_add_port failed\n"));
@ -831,6 +887,9 @@ out:
close(fd);
}
parse_fail:
WPRINTF(("vtcon: add port failed %s\n", portname));
return error;
}
@ -936,30 +995,12 @@ virtio_console_close_all(struct virtio_console *console)
return rc;
}
static enum virtio_console_be_type
virtio_console_get_be_type(const char *backend)
{
int i;
for (i = 0; i < VIRTIO_CONSOLE_BE_MAX; i++)
if (strcasecmp(backend, virtio_console_be_table[i]) == 0)
return i;
return VIRTIO_CONSOLE_BE_INVALID;
}
static int
virtio_console_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
{
struct virtio_console *console;
char *backend = NULL;
char *portname = NULL;
char *portpath = NULL;
char *opt;
int i;
pthread_mutexattr_t attr;
enum virtio_console_be_type be_type;
bool is_console = false;
int rc;
if (!opts) {
@ -1033,52 +1074,10 @@ virtio_console_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
console->control_port.rxq = 3;
console->control_port.cb = virtio_console_control_tx;
console->control_port.enabled = true;
/* virtio-console,[@]stdio|tty|pty|file:portname[=portpath]
* [,[@]stdio|tty|pty|file:portname[=portpath]]
*/
while ((opt = strsep(&opts, ",")) != NULL) {
backend = strsep(&opt, ":");
if (backend == NULL) {
WPRINTF(("vtcon: no backend is specified!\n"));
if (virtio_console_add_backend(console, opts) < 0) {
return -1;
}
if (backend[0] == '@') {
is_console = true;
backend++;
} else
is_console = false;
be_type = virtio_console_get_be_type(backend);
if (be_type == VIRTIO_CONSOLE_BE_INVALID) {
WPRINTF(("vtcon: invalid backend %s!\n",
backend));
return -1;
}
if (opt != NULL) {
portname = strsep(&opt, "=");
portpath = opt;
if (portpath == NULL
&& be_type != VIRTIO_CONSOLE_BE_STDIO
&& be_type != VIRTIO_CONSOLE_BE_PTY
&& be_type != VIRTIO_CONSOLE_BE_SOCKET) {
WPRINTF(("vtcon: portpath missing for %s\n",
portname));
return -1;
}
if (virtio_console_add_backend(console, portname,
portpath, be_type, is_console) < 0) {
WPRINTF(("vtcon: add port failed %s\n",
portname));
return -1;
}
}
}
return 0;
}