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| author | Karel Zak <kzak@redhat.com> | 2025-04-16 13:21:47 +0200 |
|---|---|---|
| committer | Karel Zak <kzak@redhat.com> | 2025-04-16 13:21:47 +0200 |
| commit | 75c7b312bf6c046c64095988e5331eaabd1220df (patch) | |
| tree | 5253332903644ce6f9ecb3758a52e13230ea86bf /sys-utils | |
| parent | efb22a49e36f8ea74e8a2c5cf6f8fa6546d153d4 (diff) | |
| parent | ae19f7546ccb038966fc121e287e1a1385ba94bb (diff) | |
| download | util-linux-75c7b312bf6c046c64095988e5331eaabd1220df.tar.gz | |
Merge branch 'PR/libmount-subdir' of https://github.com/karelzak/util-linux-work
* 'PR/libmount-subdir' of https://github.com/karelzak/util-linux-work:
libmount: (subdir) support detached open_tree() (>=6.15)
libmount: (subdir) restrict for real mounts only
libmount: (subdir) remove unused code
Diffstat (limited to 'sys-utils')
| -rw-r--r-- | sys-utils/mount.8.adoc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys-utils/mount.8.adoc b/sys-utils/mount.8.adoc index bb4151225a..95998ce2ad 100644 --- a/sys-utils/mount.8.adoc +++ b/sys-utils/mount.8.adoc @@ -767,7 +767,9 @@ Note that *mount*(8) still sanitizes and canonicalizes the source and target pat Do not create and mount a loop device, even if the source of the mount is a regular file. **X-mount.subdir=**_directory_:: -Allow mounting a sub-directory of a filesystem instead of the root directory. For now, this feature is implemented by a temporary filesystem root-directory mount in an unshared namespace and then binding the sub-directory to the final mount point and unmounting the root of the filesystem. The sub-directory mount shows up atomically for the rest of the system although it is implemented by multiple *mount*(2) syscalls. +Allow mounting a subdirectory of a filesystem instead of the root directory. This is effective only when a new instance of a filesystem is attached to the system. The option is silently ignored for operations like remount, bind mount, or move. ++ +For now, this feature is implemented by a temporary filesystem root-directory mount in an unshared namespace and then binding the sub-directory to the final mount point and unmounting the root of the filesystem. The sub-directory mount shows up atomically for the rest of the system although it is implemented by multiple *mount*(2) syscalls. + Note that this feature will not work in session with an unshared private mount namespace (after *unshare --mount*) on old kernels or with *mount*(8) without support for file-descriptors-based mount kernel API. In this case, you need *unshare --mount --propagation shared*. + |