diff options
| author | Darrick J. Wong <djwong@kernel.org> | 2024-02-10 11:32:20 -0800 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-02-27 13:59:06 -0500 |
| commit | 0b460b33c7720ecea69a62d2b6c0993325ad23f4 (patch) | |
| tree | 3d2cb3c5acdd0fdb407919c8150410db571bb94a | |
| parent | b073aa4f48f8d82a4d450f3030a27d4b23decbea (diff) | |
thread_with_file: allow ioctls against these files
Make it so that a thread_with_stdio user can handle ioctls against the
file descriptor.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
| -rw-r--r-- | include/linux/thread_with_file.h | 1 | ||||
| -rw-r--r-- | lib/thread_with_file.c | 12 |
2 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/thread_with_file.h b/include/linux/thread_with_file.h index 445b1b12a0bd..33770938d5d9 100644 --- a/include/linux/thread_with_file.h +++ b/include/linux/thread_with_file.h @@ -57,6 +57,7 @@ struct thread_with_stdio; struct thread_with_stdio_ops { void (*exit)(struct thread_with_stdio *); void (*fn)(struct thread_with_stdio *); + long (*unlocked_ioctl)(struct thread_with_stdio *, unsigned int, unsigned long); }; struct thread_with_stdio { diff --git a/lib/thread_with_file.c b/lib/thread_with_file.c index 2edf33c3e7dc..8b129744a48a 100644 --- a/lib/thread_with_file.c +++ b/lib/thread_with_file.c @@ -379,12 +379,23 @@ static __poll_t thread_with_stdout_poll(struct file *file, struct poll_table_str return mask; } +static long thread_with_stdio_ioctl(struct file *file, unsigned int cmd, unsigned long p) +{ + struct thread_with_stdio *thr = + container_of(file->private_data, struct thread_with_stdio, thr); + + if (thr->ops->unlocked_ioctl) + return thr->ops->unlocked_ioctl(thr, cmd, p); + return -ENOTTY; +} + static const struct file_operations thread_with_stdio_fops = { .llseek = no_llseek, .read = thread_with_stdio_read, .write = thread_with_stdio_write, .poll = thread_with_stdio_poll, .release = thread_with_stdio_release, + .unlocked_ioctl = thread_with_stdio_ioctl, }; static const struct file_operations thread_with_stdout_fops = { @@ -392,6 +403,7 @@ static const struct file_operations thread_with_stdout_fops = { .read = thread_with_stdio_read, .poll = thread_with_stdout_poll, .release = thread_with_stdio_release, + .unlocked_ioctl = thread_with_stdio_ioctl, }; static int thread_with_stdio_fn(void *arg) |