additional -r (read-only) flag or or -w (read-write) flag,
then assume we want, mount -u -w.
When doing a mount update, this will implicitly pass a "noro" mount
option down to the VFS layer.
vfs_mergeopts() in vfs_mount.c will then remove the "ro" mount option
if it exists in the mount options for a mounted file system.
This means that "mount -u" works the same as "mount -u -w"
and will convert a read-only mount to read-write.
- mount(8) now calls the nmount(2) system call directly, not mount(2)
- specifying a filesystem type with -t will not automatically
invoke an external /sbin/mount_XXXX program....this only happens for
certain file system types. For all other file system types, nmount(2)
is called directly.
system is mounted. This prevevents duplicated mounts.
The change I made against the original patch is to fall back to the given
path on realpath(2) failure instead of exiting with an error.
Submitted by: Andreas Kohn <andreas@syndrom23.de>
PR: bin/89782
MFC after: 3 days
external mounting program list as well; otherwise, entry like the following
in /etc/fstab wouldn't work:
/dev/acd0 /mnt/cdrom cd9660 ro,-C=big5 0 0
Reviewed by: rodrigc
- Add build_iovec_argf() helper function, for help converting old
mount options which used the mount_argf() function for the mount() syscall.
Discussed with: phk
- Teach the mount program to call the nmount() syscall directly
- Preserve existing method of calling mount() for UFS, until we clean things
up.
- Preserve existing method of forking and calling external mount programs for
mfs, msdosfs, nfs, nfs4, ntfs, nwfs, nullfs, portalfs, reiserfs, smbfs,
udf, umapfs, unionfs
- devfs, linprocfs, procfs, ext2fs call nmount() syscall directly, since
that is all those external mount programs were doing
Reviewed by: phk
Discussed on: arch
use of the macro in sbin/mount*'s, by replacing:
mopts[] = {
MOPT_STDOPTS,
{ NULL }
}
With:
mopts[] = {
MOPT_STDOPTS,
MOPT_NULL
}
This change will help to reduce the situation that we don't explicitly
initialize "struct mntopt"'s. It should not contribute to any
functional/logical changes as far as I can tell.
This unbreaks "/rescue/mount -t foo" -- previously it was necessary to
explicitly call "/rescue/mount_foo".
Hints from: gordon
X-MFC after: 3 days (if approved by re@)
libufs, which only works for Charlie root.
This change reverts the introduction of libufs and moves the
check into the kernel. Since the f_fstypename is the same
for both ufs and ufs2, we check fs_magic for presence of
ufs2 and copy "ufs2" explicitly instead.
Submitted by: Christian S.J. Peron <maneo@bsdpro.com>
MAC support on the file system, if supported, which causes MAC to treat
each object as having its own label, rather than using a single label
for all objects on the file system. This doesn't have to be used in
combination with the tunefs/newfs flags -- it's an alternative.
in those cases:
1. File system was mounted by an unprivileged user.
2. File system was mounted by an unprivileged root user.
3. File system was mounted by a privileged non-root user.
Point 1 is when file system was mounted by unprivileged user
(sysctl vfs.usermount was equal to 1 then).
Point 2 is when file system was mounted by root, while sysctl
security.bsd.suser_enabled is set to 0 and sysctl vfs.usermount
is set to 1.
Point 3 is because we want to be ready for capabilities.
Reviewed by: rwatson
Approved by: scottl (mentor)
