lindebugfs: Fix write

For write operation pseudofs creates an sbuf with the data.
Use this data instead of the uio as it's not usable anymore after
uiomove.

Reviewed by:	hselasky
MFC after:	1 week
Sponsored by:	Beckhoff Automation GmbH & Co. KG
Differential Revision:	https://reviews.freebsd.org/D34114

This commit is contained in:

Emmanuel Vadot

2022-01-31 14:46:16 +01:00

parent e11ad014d1

commit 867b4decb4

1 changed files with 8 additions and 2 deletions

									
										sys/compat/lindebugfs/lindebugfs.c
									
		+8
		-2
	
												View File
												
				@@ -130,8 +130,14 @@ debugfs_fill(PFS_FILL_ARGS)

					if ((rc = linux_set_current_flags(curthread, M_NOWAIT)))

						return (rc);

					vn.v_data = d->dm_data;

					buf = uio->uio_iov[0].iov_base;

					len = min(uio->uio_iov[0].iov_len, uio->uio_resid);

					if (uio->uio_rw == UIO_READ) {

						buf = uio->uio_iov[0].iov_base;

						len = min(uio->uio_iov[0].iov_len, uio->uio_resid);

					} else {

						sbuf_finish(sb);

						buf = sbuf_data(sb);

						len = sbuf_len(sb);

					}

					off = 0;

					lf.private_data = NULL;

					rc = d->dm_fops->open(&vn, &lf);