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hw/xen: Use xs_node_read() from xs_node_vscanf()

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Reduce some duplication.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Anthony PERARD <anthony.perard@vates.tech>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
This commit is contained in:
David Woodhouse 2025-01-10 09:37:48 +00:00
parent 7a0b74d871
commit 76f26e46ac
2 changed files with 6 additions and 10 deletions
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1
hw/xen/trace-events
View file

@ -38,7 +38,6 @@ xen_device_remove_watch(const char *type, char *name, const char *node, const ch
xs_node_create(const char *node) "%s"
xs_node_destroy(const char *node) "%s"
xs_node_vprintf(char *path, char *value) "%s %s"
xs_node_vscanf(char *path, char *value) "%s %s"
xs_node_read(const char *path, const char *value) "%s %s"
xs_node_watch(char *path) "%s"
xs_node_unwatch(char *path) "%s"

15
hw/xen/xen-bus-helper.c
View file

@ -105,25 +105,22 @@ int xs_node_vscanf(struct qemu_xs_handle *h, xs_transaction_t tid,
const char *node, const char *key, Error **errp,
const char *fmt, va_list ap)
{
char *path, *value;
char *value;
int rc;
path = (strlen(node) != 0) ? g_strdup_printf("%s/%s", node, key) :
g_strdup(key);
value = qemu_xen_xs_read(h, tid, path, NULL);
trace_xs_node_vscanf(path, value);
if (node && strlen(node) != 0) {
value = xs_node_read(h, tid, NULL, errp, "%s/%s", node, key);
} else {
value = xs_node_read(h, tid, NULL, errp, "%s", key);
}
if (value) {
rc = vsscanf(value, fmt, ap);
} else {
error_setg_errno(errp, errno, "failed to read from '%s'",
path);
rc = EOF;
}
free(value);
g_free(path);
return rc;
}