172 lines
5.7 KiB
Diff
172 lines
5.7 KiB
Diff
From d663f1b1a92a778bcdc68f29b8c08cb49431b4f7 Mon Sep 17 00:00:00 2001
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From: Daniel Mack <daniel@zonque.org>
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Date: Mon, 6 Oct 2014 18:36:16 +0200
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Subject: [PATCH] sd-bus: sync kdbus.h (ABI break)
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The KDBUS_CMD_FREE ioctl now uses a struct rather than a direct pointer
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to the offset to free.
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The KDBUS_CMD_MSG_CANCEL ioctl has also changes, but there's no user of
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it yet in systemd.
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---
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src/bus-proxyd/bus-proxyd.c | 6 +++++-
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src/libsystemd/sd-bus/bus-control.c | 23 ++++++++++++++++++++---
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src/libsystemd/sd-bus/bus-kernel.c | 7 +++++--
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src/libsystemd/sd-bus/kdbus.h | 32 ++++++++++++++++++++++++++++++--
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4 files changed, 60 insertions(+), 8 deletions(-)
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diff --git a/src/bus-proxyd/bus-proxyd.c b/src/bus-proxyd/bus-proxyd.c
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index 5d58cd2af4..cbec04933c 100644
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--- a/src/bus-proxyd/bus-proxyd.c
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+++ b/src/bus-proxyd/bus-proxyd.c
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@@ -730,6 +730,7 @@ static int process_driver(sd_bus *a, sd_bus *b, sd_bus_message *m) {
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "ListQueuedOwners")) {
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struct kdbus_cmd_name_list cmd = {};
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struct kdbus_name_list *name_list;
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+ struct kdbus_cmd_free cmd_free;
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struct kdbus_cmd_name *name;
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_cleanup_strv_free_ char **owners = NULL;
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char *arg0;
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@@ -773,7 +774,10 @@ static int process_driver(sd_bus *a, sd_bus *b, sd_bus_message *m) {
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}
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}
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- r = ioctl(a->input_fd, KDBUS_CMD_FREE, &cmd.offset);
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+ cmd_free.flags = 0;
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+ cmd_free.offset = cmd.offset;
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+
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+ r = ioctl(a->input_fd, KDBUS_CMD_FREE, &cmd_free);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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diff --git a/src/libsystemd/sd-bus/bus-control.c b/src/libsystemd/sd-bus/bus-control.c
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index d9a53c702f..dbd94fc46b 100644
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--- a/src/libsystemd/sd-bus/bus-control.c
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+++ b/src/libsystemd/sd-bus/bus-control.c
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@@ -223,6 +223,23 @@ _public_ int sd_bus_release_name(sd_bus *bus, const char *name) {
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return bus_release_name_dbus1(bus, name);
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}
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+static int kernel_cmd_free(sd_bus *bus, uint64_t offset)
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+{
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+ struct kdbus_cmd_free cmd;
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+ int r;
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+
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+ assert(bus);
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+
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+ cmd.flags = 0;
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+ cmd.offset = offset;
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+
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+ r = ioctl(bus->input_fd, KDBUS_CMD_FREE, &cmd);
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+ if (r < 0)
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+ return -errno;
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+
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+ return 0;
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+}
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+
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static int kernel_get_list(sd_bus *bus, uint64_t flags, char ***x) {
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struct kdbus_cmd_name_list cmd = {};
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struct kdbus_name_list *name_list;
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@@ -269,9 +286,9 @@ static int kernel_get_list(sd_bus *bus, uint64_t flags, char ***x) {
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}
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}
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- r = ioctl(bus->input_fd, KDBUS_CMD_FREE, &cmd.offset);
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+ r = kernel_cmd_free(bus, cmd.offset);
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if (r < 0)
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- return -errno;
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+ return r;
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return 0;
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}
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@@ -597,7 +614,7 @@ static int bus_get_owner_kdbus(
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r = 0;
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fail:
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- ioctl(bus->input_fd, KDBUS_CMD_FREE, &cmd->offset);
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+ kernel_cmd_free(bus, cmd->offset);
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return r;
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}
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diff --git a/src/libsystemd/sd-bus/bus-kernel.c b/src/libsystemd/sd-bus/bus-kernel.c
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index 09ff25fe71..5ae1418afc 100644
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--- a/src/libsystemd/sd-bus/bus-kernel.c
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+++ b/src/libsystemd/sd-bus/bus-kernel.c
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@@ -799,14 +799,17 @@ int bus_kernel_connect(sd_bus *b) {
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}
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static void close_kdbus_msg(sd_bus *bus, struct kdbus_msg *k) {
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+ struct kdbus_cmd_free cmd;
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uint64_t off _alignas_(8);
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struct kdbus_item *d;
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assert(bus);
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assert(k);
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- off = (uint8_t *)k - (uint8_t *)bus->kdbus_buffer;
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- ioctl(bus->input_fd, KDBUS_CMD_FREE, &off);
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+ cmd.flags = 0;
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+ cmd.offset = (uint8_t *)k - (uint8_t *)bus->kdbus_buffer;
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+
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+ ioctl(bus->input_fd, KDBUS_CMD_FREE, &cmd);
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KDBUS_ITEM_FOREACH(d, k, items) {
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diff --git a/src/libsystemd/sd-bus/kdbus.h b/src/libsystemd/sd-bus/kdbus.h
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index 801125946b..8994b5673d 100644
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--- a/src/libsystemd/sd-bus/kdbus.h
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+++ b/src/libsystemd/sd-bus/kdbus.h
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@@ -444,6 +444,31 @@ struct kdbus_cmd_recv {
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} __attribute__((aligned(8)));
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/**
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+ * struct kdbus_cmd_cancel - struct to cancel a synchronously pending message
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+ * @cookie The cookie of the pending message
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+ * @flags Flags for the free command. Currently unused.
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+ *
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+ * This struct is used with the KDBUS_CMD_CANCEL ioctl.
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+ */
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+struct kdbus_cmd_cancel {
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+ __u64 cookie;
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+ __u64 flags;
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+} __attribute__((aligned(8)));
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+
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+/**
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+ * struct kdbus_cmd_free - struct to free a slice of memory in the pool
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+ * @offset The offset of the memory slice, as returned by other
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+ * ioctls
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+ * @flags Flags for the free command. Currently unused.
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+ *
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+ * This struct is used with the KDBUS_CMD_FREE ioctl.
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+ */
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+struct kdbus_cmd_free {
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+ __u64 offset;
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+ __u64 flags;
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+} __attribute__((aligned(8)));
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+
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+/**
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* enum kdbus_policy_access_type - permissions of a policy record
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* @_KDBUS_POLICY_ACCESS_NULL: Uninitialized/invalid
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* @KDBUS_POLICY_ACCESS_USER: Grant access to a uid
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@@ -710,6 +735,7 @@ struct kdbus_conn_info {
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*/
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struct kdbus_cmd_update {
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__u64 size;
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+ __u64 flags;
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struct kdbus_item items[0];
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} __attribute__((aligned(8)));
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@@ -807,8 +833,10 @@ enum kdbus_ioctl_type {
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struct kdbus_msg),
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KDBUS_CMD_MSG_RECV = _IOWR(KDBUS_IOCTL_MAGIC, 0x41,
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struct kdbus_cmd_recv),
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- KDBUS_CMD_MSG_CANCEL = _IOW(KDBUS_IOCTL_MAGIC, 0x42, __u64 *),
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- KDBUS_CMD_FREE = _IOW(KDBUS_IOCTL_MAGIC, 0x43, __u64 *),
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+ KDBUS_CMD_MSG_CANCEL = _IOW(KDBUS_IOCTL_MAGIC, 0x42,
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+ struct kdbus_cmd_cancel),
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+ KDBUS_CMD_FREE = _IOW(KDBUS_IOCTL_MAGIC, 0x43,
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+ struct kdbus_cmd_free),
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KDBUS_CMD_NAME_ACQUIRE = _IOWR(KDBUS_IOCTL_MAGIC, 0x50,
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struct kdbus_cmd_name),
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