6498ece0e7
Linux kernel does not allow to change more than one propagation flag
by one mount(2) syscall. The flags also cannot be mixed with another
mount options. It means that the propagation flags cannot be stored in
/etc/fstab, manual "mount --make-* <mountpoint>" is always necessary
after successful mount. Painful...
This patch implements additional mount(2) after previous successful
mount(2) (or exec /sbin/mount.<type>).
For example:
mount /dev/sda1 /A -o private,unbindable,ro
or fstab entry:
/dev/sda1 /A auto ro,private,unbindable
is implemented by three mount(2) calls:
- 1st mounts /dev/sda1 with MS_RDONLY
- 2nd sets MS_PRIVATE flag
- 3rd sets MS_UNBINDABLE flag.
It's the same as as to manually call:
mount /dev/sda1 /A -o ro
mount --make-private /A
mount --make-unbindable /A
This solution is not atomic, and umount(2) is not called if
propagation flags are not successfully applied, only error is
returned.
This change does not affect libmount API, so one beautiful day when
mount(2) syscall will be improved we can drop this nasty patch.
Signed-off-by: Karel Zak <kzak@redhat.com>
|
||
|---|---|---|
| Documentation | ||
| config | ||
| disk-utils | ||
| fdisks | ||
| include | ||
| lib | ||
| libblkid | ||
| libmount | ||
| libuuid | ||
| login-utils | ||
| m4 | ||
| misc-utils | ||
| mount-deprecated | ||
| po | ||
| schedutils | ||
| sys-utils | ||
| term-utils | ||
| tests | ||
| text-utils | ||
| tools | ||
| .gitignore | ||
| AUTHORS | ||
| COPYING | ||
| ChangeLog | ||
| Makefile.am | ||
| NEWS | ||
| README | ||
| README.licensing | ||
| autogen.sh | ||
| configure.ac | ||
README
util-linux
util-linux is a random collection of Linux utilities
Note that in years 2006-2010 this project used the name "util-linux-ng".
MAILING LIST:
E-MAIL: util-linux@vger.kernel.org
URL: http://vger.kernel.org/vger-lists.html#util-linux
DOWNLOAD:
ftp://ftp.kernel.org/pub/linux/utils/util-linux/
SOURCE CODE:
Web interface:
http://git.kernel.org/?p=utils/util-linux/util-linux.git
https://github.com/karelzak/util-linux
Checkout:
git clone git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git util-linux
NLS (PO TRANSLATIONS):
PO files are maintained by:
http://translationproject.org/domain/util-linux.html
VERSION SCHEMA:
Standard releases:
<major>.<minor>[.<maint>[.<bugfix>]]
major = fatal and deep changes
minor = typical release with new features
maint = maintenance releases; bug fixes only
bugfix = unplanned releases for critical/security bugs
Development releases:
<major>.<minor>-rc<N>