LingaoM commented on code in PR #19456:
URL: https://github.com/apache/nuttx/pull/19456#discussion_r3627060378
##########
fs/hostfs/hostfs.c:
##########
@@ -616,6 +610,16 @@ static int hostfs_ioctl(FAR struct file *filep, int cmd,
unsigned long arg)
{
switch (cmd)
{
+ case FIOC_GETLK:
+ case FIOC_SETLK:
+ case FIOC_SETLKW:
Review Comment:
For the non-POSIX hostfs backends such as ARM semihosting, `host_ioctl()`
already returned `-ENOSYS`, so host-side ioctl forwarding was not supported
there before this change. This patch therefore keeps those backends unchanged
and only implements the FIOC lock translation in the POSIX sim backend, where
hostfs can actually call the host `fcntl()` API.
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