getmntpoint: Don't compare st_rdev for non-devices

If the mntfromname of a mountpoint is not a device (e.g. nullfs, tarfs,
procfs) we shouldn't compare st_rdev, as any match will be spurious.

MFC after:	1 week
Sponsored by:	Klara, Inc.
Sponsored by:	NetApp, Inc.
Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D51945

This commit is contained in:

Dag-Erling Smørgrav

2025-08-17 19:07:45 +02:00

parent d4b59682cb

commit 8073a5137f

1 changed files with 1 additions and 0 deletions

									
										lib/libutil/mntopts.c
									
		+1
		
												View File
												
				@@ -185,6 +185,7 @@ getmntpoint(const char *name)

								strncpy(statfsp->f_mntfromname, device, len);

						}

						if (stat(ddevname, &mntdevstat) == 0 &&

						    S_ISCHR(mntdevstat.st_mode) &&

						    mntdevstat.st_rdev == devstat.st_rdev)

							return (statfsp);

					}