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Update Xen packages, include QEMU fix to avoid using %ms scanf directive which is not supported by FreeBSD libc. Link: https://lore.kernel.org/xen-devel/20250107093140.86180-1-roger.pau@citrix.com/ Link: https://lists.freebsd.org/archives/freebsd-xen/2025-February/000227.html Approved by: bapt (implicit) Sponsored by: Cloud Software Group
88 lines
3.4 KiB
Diff
88 lines
3.4 KiB
Diff
From 677a577b625045c6d02210ac91ff452f54812513 Mon Sep 17 00:00:00 2001
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From: Roger Pau Monne <roger.pau@citrix.com>
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Date: Fri, 10 Jan 2025 10:35:31 +0100
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Subject: [PATCH 2/2] xen: do not use '%ms' scanf specifier
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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The 'm' parameter used to request auto-allocation of the destination variable
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is not supported on FreeBSD, and as such leads to failures to parse.
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What's more, the current usage of '%ms' with xs_node_scanf() is pointless, as
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it just leads to a double allocation of the same string. Instead use
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xs_node_read() to read the whole xenstore node.
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Fixes: a783f8ad4ec9 ('xen: add a mechanism to automatically create XenDevice-s...')
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Fixes: 9b7737469080 ('hw/xen: update Xen console to XenDevice model')
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Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
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Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
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Reviewed-by: Anthony PERARD <anthony.perard@vates.tech>
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---
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hw/block/xen-block.c | 4 ++--
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hw/xen/xen-bus.c | 14 ++++++++++++--
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include/hw/xen/xen-bus.h | 1 +
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3 files changed, 15 insertions(+), 4 deletions(-)
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diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c
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index 6ccb8a4a3219..dc389578f454 100644
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--- a/hw/block/xen-block.c
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+++ b/hw/block/xen-block.c
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@@ -115,8 +115,8 @@ static void xen_block_connect(XenDevice *xendev, Error **errp)
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return;
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}
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- if (xen_device_frontend_scanf(xendev, "protocol", "%ms",
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- &str) != 1) {
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+ str = xen_device_frontend_read(xendev, "protocol");
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+ if (!str) {
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protocol = BLKIF_PROTOCOL_NATIVE;
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} else {
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if (strcmp(str, XEN_IO_PROTO_ABI_X86_32) == 0) {
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diff --git a/hw/xen/xen-bus.c b/hw/xen/xen-bus.c
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index c59850b1dee7..8ff083167f47 100644
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--- a/hw/xen/xen-bus.c
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+++ b/hw/xen/xen-bus.c
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@@ -154,8 +154,8 @@ again:
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!strcmp(key[i], "hotplug-status"))
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continue;
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- if (xs_node_scanf(xenbus->xsh, tid, path, key[i], NULL, "%ms",
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- &val) == 1) {
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+ val = xs_node_read(xenbus->xsh, tid, NULL, NULL, "%s/%s", path, key[i]);
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+ if (val) {
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qdict_put_str(opts, key[i], val);
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free(val);
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}
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@@ -644,6 +644,16 @@ int xen_device_frontend_scanf(XenDevice *xendev, const char *key,
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return rc;
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}
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+char *xen_device_frontend_read(XenDevice *xendev, const char *key)
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+{
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+ XenBus *xenbus = XEN_BUS(qdev_get_parent_bus(DEVICE(xendev)));
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+
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+ g_assert(xenbus->xsh);
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+
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+ return xs_node_read(xenbus->xsh, XBT_NULL, NULL, NULL, "%s/%s",
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+ xendev->frontend_path, key);
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+}
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+
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static void xen_device_frontend_set_state(XenDevice *xendev,
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enum xenbus_state state,
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bool publish)
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diff --git a/include/hw/xen/xen-bus.h b/include/hw/xen/xen-bus.h
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index f43589816495..6bb199704440 100644
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--- a/include/hw/xen/xen-bus.h
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+++ b/include/hw/xen/xen-bus.h
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@@ -89,6 +89,7 @@ void xen_device_frontend_printf(XenDevice *xendev, const char *key,
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int xen_device_frontend_scanf(XenDevice *xendev, const char *key,
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const char *fmt, ...)
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G_GNUC_SCANF(3, 4);
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+char *xen_device_frontend_read(XenDevice *xendev, const char *key);
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void xen_device_set_max_grant_refs(XenDevice *xendev, unsigned int nr_refs,
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Error **errp);
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--
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2.46.0
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