CVS commit: [netbsd-7] src/sys/kern

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Mon Dec  1 09:54:50 UTC 2014

Modified Files:
        src/sys/kern [netbsd-7]: vfs_syscalls.c

Log Message:
Pull up following revision(s) (requested by manu in ticket #276):
        sys/kern/vfs_syscalls.c: revision 1.492
Do not follow symlinks in sys_unmount()
There are situations where the underlying filesystem is unreachable
(e.g: NFS) causing symlink resolution to hang. Such a situation
should be avoided by using umount -f -R (force and raw), but while -R
causes the symlink resolution to be skipped in umount(8), the kernel was
still doing it in sys_unmount(). This changes fixes that.
When the -R flag is not given, umount(8) does symlinks resolution
through
realpath(3) before calling unmount(2), hence not doing it in the kernel
would not change behavior.


To generate a diff of this commit:
cvs rdiff -u -r1.490 -r1.490.2.1 src/sys/kern/vfs_syscalls.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.