git: 0459337491cd - stable/13 - makefs: warn that ffs sectorsize other than 512 may not work

The branch stable/13 has been updated by emaste:

URL: https://cgit.FreeBSD.org/src/commit/?id=0459337491cdfdd752507c0d2722999a6a9781ef

commit 0459337491cdfdd752507c0d2722999a6a9781ef
Author:     Ed Maste <emaste@FreeBSD.org>
AuthorDate: 2024-01-25 01:47:36 +0000
Commit:     Ed Maste <emaste@FreeBSD.org>
CommitDate: 2024-03-22 19:03:48 +0000

    makefs: warn that ffs sectorsize other than 512 may not work
    
    newfs always sets sectorsize to DEV_BSIZE (512) and derives some other
    values based on the number of 512-byte sectors per real sector.  Similar
    logic is required in makefs.  Until that happens, emit a warning that
    the image may be incorrect.
    
    PR:             276571
    (cherry picked from commit 176b9e0d724b4c1a24d2c46a1256381784f04edc)
    (cherry picked from commit 8e402178193f7b273a956b864d8d8b288ce62ee7)
---
 usr.sbin/makefs/ffs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/usr.sbin/makefs/ffs.c b/usr.sbin/makefs/ffs.c
index 7504d6653180..cc83f2f2d3d2 100644
--- a/usr.sbin/makefs/ffs.c
+++ b/usr.sbin/makefs/ffs.c
@@ -340,6 +340,9 @@ ffs_validate(const char *dir, fsnode *root, fsinfo_t *fsopts)
 		/* set FFS defaults */
 	if (fsopts->sectorsize == -1)
 		fsopts->sectorsize = DFL_SECSIZE;
+	if (fsopts->sectorsize != DFL_SECSIZE)
+		warnx("sectorsize %d may produce nonfunctional image",
+		    fsopts->sectorsize);
 	if (ffs_opts->fsize == -1)
 		ffs_opts->fsize = MAX(DFL_FRAGSIZE, fsopts->sectorsize);
 	if (ffs_opts->bsize == -1)