git: c620dfb037e7 - stable/14 - hidraw(4): update hgd_actlen in HIDRAW_GET_REPORT ioctl

The branch stable/14 has been updated by wulf:

URL: https://cgit.FreeBSD.org/src/commit/?id=c620dfb037e7cdcbc26f33edf8afa4764c3757ac

commit c620dfb037e7cdcbc26f33edf8afa4764c3757ac
Author:     Matthew Nygard Dodd <Matthew.Nygard.Dodd@gmail.com>
AuthorDate: 2024-11-18 04:25:10 +0000
Commit:     Vladimir Kondratyev <wulf@FreeBSD.org>
CommitDate: 2024-12-22 03:33:27 +0000

    hidraw(4): update hgd_actlen in HIDRAW_GET_REPORT ioctl
    
    HIDRAW_GET_REPORT ioctl is documented to update hgd_actlen on return
    with the number of bytes copied.  It does not do this.
    
    Reviewed by:    wulf
    PR:             282790
    MFC after:      1 week
    
    (cherry picked from commit f4f46a2eef3be6d19c65a4ca4ee70f365dd5be4f)
---
 sys/dev/hid/hidraw.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/sys/dev/hid/hidraw.c b/sys/dev/hid/hidraw.c
index 618a6d2d5c31..45ef1995063e 100644
--- a/sys/dev/hid/hidraw.c
+++ b/sys/dev/hid/hidraw.c
@@ -570,6 +570,7 @@ hidraw_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag,
 	struct hidraw_devinfo *hd;
 	const char *devname;
 	uint32_t size;
+	hid_size_t actsize;
 	int id, len;
 	int error = 0;
 
@@ -747,16 +748,16 @@ hidraw_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag,
 		}
 		size = MIN(hgd->hgd_maxlen, size);
 		buf = HIDRAW_LOCAL_ALLOC(local_buf, size);
-		error = hid_get_report(sc->sc_dev, buf, size, NULL,
+		actsize = 0;
+		error = hid_get_report(sc->sc_dev, buf, size, &actsize,
 		    hgd->hgd_report_type, id);
 		if (!error)
-			error = copyout(buf, hgd->hgd_data, size);
+			error = copyout(buf, hgd->hgd_data, actsize);
 		HIDRAW_LOCAL_FREE(local_buf, buf);
+		hgd->hgd_actlen = actsize;
 #ifdef COMPAT_FREEBSD32
-		/*
-		 * HIDRAW_GET_REPORT is declared _IOWR, but hgd is not written
-		 * so we don't call update_hgd32().
-		 */
+		if (hgd32 != NULL)
+			update_hgd32(hgd, hgd32);
 #endif
 		return (error);