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fs: rpmsgfs_client: add init message to unlock semaphore

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Add INIT message which can be used in case ns_announcement isn't
supported on the system.
It unlocks the client flow by calling rpmsg_post() on the semaphore.
Without this or an NS announcement, the client's semaphore will wait
forever.

This is practical when the server side is running from linux userspace
using ioctl where controlling NS announcements is problematic.

Signed-off-by: Andre Heinemans <andre.heinemans@nxp.com>
This commit is contained in:
Andre Heinemans
2026-04-07 16:57:23 +02:00
committed by Xiang Xiao
parent faa4d7ff8d
commit 67f1cd288a
2 changed files with 14 additions and 0 deletions
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fs/rpmsgfs/rpmsgfs.h
+1
View File
@@ -38,6 +38,7 @@
#define RPMSGFS_NAME_PREFIX "rpmsgfs-"
#define RPMSGFS_INIT 0 /* Only needed if NS announcements can't be used */
#define RPMSGFS_OPEN 1
#define RPMSGFS_CLOSE 2
#define RPMSGFS_READ 3
fs/rpmsgfs/rpmsgfs_client.c
+13
View File
@@ -80,6 +80,9 @@ static int rpmsgfs_statfs_handler(FAR struct rpmsg_endpoint *ept,
static int rpmsgfs_stat_handler(FAR struct rpmsg_endpoint *ept,
FAR void *data, size_t len,
uint32_t src, FAR void *priv);
static int rpmsgfs_init_handler(FAR struct rpmsg_endpoint *ept,
FAR void *data, size_t len,
uint32_t src, FAR void *priv);
static void rpmsgfs_device_created(struct rpmsg_device *rdev,
FAR void *priv_);
static void rpmsgfs_device_destroy(struct rpmsg_device *rdev,
@@ -98,6 +101,7 @@ static int rpmsgfs_send_recv(FAR struct rpmsgfs_s *priv,
static const rpmsg_ept_cb g_rpmsgfs_handler[] =
{
[RPMSGFS_INIT] = rpmsgfs_init_handler,
[RPMSGFS_OPEN] = rpmsgfs_default_handler,
[RPMSGFS_CLOSE] = rpmsgfs_default_handler,
[RPMSGFS_READ] = rpmsgfs_read_handler,
@@ -276,6 +280,15 @@ static int rpmsgfs_stat_handler(FAR struct rpmsg_endpoint *ept,
return 0;
}
static int rpmsgfs_init_handler(FAR struct rpmsg_endpoint *ept,
FAR void *data, size_t len,
uint32_t src, FAR void *priv)
{
FAR struct rpmsgfs_s *ept_priv = ept->priv;
rpmsg_post(&ept_priv->ept, &ept_priv->wait);
return 0;
}
static FAR void *rpmsgfs_get_tx_payload_buffer(FAR struct rpmsgfs_s *priv,
FAR uint32_t *len)
{