diff options
| author | Mateusz Piotrowski <0mp@FreeBSD.org> | 2025-10-09 15:47:25 +0000 |
|---|---|---|
| committer | Mateusz Piotrowski <0mp@FreeBSD.org> | 2025-10-30 13:00:37 +0000 |
| commit | 89fd2ff35c3f4d70d8c93c3a3075dd2dab23cd3a (patch) | |
| tree | 42ff8ca4ee430e9f5e0baebb87a8a2026a63104c | |
| parent | e37fbc13eedf606bfdc9db5a55ce89009399b45b (diff) | |
uio.9: Improve description of uio_rw flags
The direction of the data transfer in uio(9) can be confusing,
so state explicitly the difference between UIO_READ and UIO_WRITE.
Reviewed by: ziaee
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D52996
(cherry picked from commit 0625f470e0956a3a337e4999f6712ec7b7d872e5)
| -rw-r--r-- | share/man/man9/uio.9 | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/share/man/man9/uio.9 b/share/man/man9/uio.9 index e6240c4e51d3..b143eb6e8e62 100644 --- a/share/man/man9/uio.9 +++ b/share/man/man9/uio.9 @@ -23,7 +23,7 @@ .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" -.Dd March 11, 2017 +.Dd October 22, 2025 .Dt UIO 9 .Os .Sh NAME @@ -107,10 +107,14 @@ The I/O vector points into the kernel address space. Do not copy, already in object. .El .It Va uio_rw -The direction of the desired transfer, either -.Dv UIO_READ -or -.Dv UIO_WRITE . +The direction of the desired transfer. +The supported flags are: +.Bl -tag -width "UIO_WRITE" +.It Dv UIO_READ +Transfer data from the buffers into the I/O vectors. +.It Dv UIO_WRITE +Transfer data from the I/O vectors into the buffers. +.El .It Va uio_td The pointer to a .Vt "struct thread" |