Author: sephe Date: Fri Oct 14 03:11:31 2016 New Revision: 307253 URL: https://svnweb.freebsd.org/changeset/base/307253
Log: MFC 306396 cam/ata: Allow drivers to veto ATA disk attachment. This eventhandler is mainly used by VMs, e.g. Hyper-V, whose disk controllers share the disks with the simulated ATA controllers. Submitted by: Hongjiang Zhang <honzhan microsoft com> Discussed with: mav Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D7693 Modified: stable/10/sys/cam/ata/ata_xpt.c stable/10/sys/sys/eventhandler.h Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/cam/ata/ata_xpt.c ============================================================================== --- stable/10/sys/cam/ata/ata_xpt.c Fri Oct 14 03:00:53 2016 (r307252) +++ stable/10/sys/cam/ata/ata_xpt.c Fri Oct 14 03:11:31 2016 (r307253) @@ -40,6 +40,7 @@ __FBSDID("$FreeBSD$"); #include <sys/interrupt.h> #include <sys/sbuf.h> +#include <sys/eventhandler.h> #include <sys/lock.h> #include <sys/mutex.h> #include <sys/sysctl.h> @@ -827,12 +828,24 @@ noerror: { struct ccb_pathinq cpi; int16_t *ptr; + int veto = 0; ident_buf = &softc->ident_data; for (ptr = (int16_t *)ident_buf; ptr < (int16_t *)ident_buf + sizeof(struct ata_params)/2; ptr++) { *ptr = le16toh(*ptr); } + + /* + * Allow others to veto this ATA disk attachment. This + * is mainly used by VMs, whose disk controllers may + * share the disks with the simulated ATA controllers. + */ + EVENTHANDLER_INVOKE(ada_probe_veto, path, ident_buf, &veto); + if (veto) { + goto device_fail; + } + if (strncmp(ident_buf->model, "FX", 2) && strncmp(ident_buf->model, "NEC", 3) && strncmp(ident_buf->model, "Pioneer", 7) && Modified: stable/10/sys/sys/eventhandler.h ============================================================================== --- stable/10/sys/sys/eventhandler.h Fri Oct 14 03:00:53 2016 (r307252) +++ stable/10/sys/sys/eventhandler.h Fri Oct 14 03:11:31 2016 (r307253) @@ -283,4 +283,11 @@ typedef void (*unregister_framebuffer_fn EVENTHANDLER_DECLARE(register_framebuffer, register_framebuffer_fn); EVENTHANDLER_DECLARE(unregister_framebuffer, unregister_framebuffer_fn); +/* Veto ada attachment */ +struct cam_path; +struct ata_params; +typedef void (*ada_probe_veto_fn)(void *, struct cam_path *, + struct ata_params *, int *); +EVENTHANDLER_DECLARE(ada_probe_veto, ada_probe_veto_fn); + #endif /* SYS_EVENTHANDLER_H */ _______________________________________________ svn-src-stable-10@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-stable-10 To unsubscribe, send any mail to "svn-src-stable-10-unsubscr...@freebsd.org"