git: 964ad27f1e48 - main - bsdinstall: Filter out devices that cannot be opened

The branch main has been updated by brd:

URL: https://cgit.FreeBSD.org/src/commit/?id=964ad27f1e48ec28247142cfe6afdfa1f8bd3182

commit 964ad27f1e48ec28247142cfe6afdfa1f8bd3182
Author:     Brad Davis <brd@FreeBSD.org>
AuthorDate: 2022-05-13 14:33:21 +0000
Commit:     Brad Davis <brd@FreeBSD.org>
CommitDate: 2022-05-13 14:33:21 +0000

    bsdinstall: Filter out devices that cannot be opened
    
    Devices that cannot be opened are most likely the install media and
    should not be listed as destinations.
    
    Reviewed by:            allanjude
    Approved by:            allanjude
    Differential Revision:  https://reviews.freebsd.org/D34879
    Sponsored by:           Rubicon Communications, LLC ("Netgate")
---
 usr.sbin/bsdinstall/partedit/part_wizard.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/usr.sbin/bsdinstall/partedit/part_wizard.c b/usr.sbin/bsdinstall/partedit/part_wizard.c
index 2ffae7b16829..bc6427f859da 100644
--- a/usr.sbin/bsdinstall/partedit/part_wizard.c
+++ b/usr.sbin/bsdinstall/partedit/part_wizard.c
@@ -135,6 +135,16 @@ boot_disk_select(struct gmesh *mesh)
 					continue;
 				if (strncmp(pp->lg_name, "cd", 2) == 0)
 					continue;
+				/*
+				 * Check if the disk is available to be opened for
+				 * write operations, it helps prevent the USB
+				 * stick used to boot from being listed as an option
+				 */
+				fd = g_open(pp->lg_name, 1);
+				if (fd == -1) {
+					continue;
+				}
+				g_close(fd);
 
 				disks = realloc(disks, (++n)*sizeof(disks[0]));
 				disks[n-1].name = pp->lg_name;