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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-07-15 12:34:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-07-15 12:34:01 -0700 |
| commit | 98f3a9a4fd449641010c77abca16aebb0b8d4419 (patch) | |
| tree | 20387bef96d75fa921c37ae6695ae9175b00752c /fs/internal.h | |
| parent | 1b074abe885f43b2c207b5e748ffa60604dbc020 (diff) | |
| parent | 5b08bd408534bfb3a7cf5778da5b27d4e4fffe12 (diff) | |
| download | lwn-98f3a9a4fd449641010c77abca16aebb0b8d4419.tar.gz lwn-98f3a9a4fd449641010c77abca16aebb0b8d4419.zip | |
Merge tag 'vfs-6.11.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull pidfs updates from Christian Brauner:
"This contains work to make it possible to derive namespace file
descriptors from pidfd file descriptors.
Right now it is already possible to use a pidfd with setns() to
atomically change multiple namespaces at the same time. In other
words, it is possible to switch to the namespace context of a process
using a pidfd. There is no need to first open namespace file
descriptors via procfs.
The work included here is an extension of these abilities by allowing
to open namespace file descriptors using a pidfd. This means it is now
possible to interact with namespaces without ever touching procfs.
To this end a new set of ioctls() on pidfds is introduced covering all
supported namespace types"
* tag 'vfs-6.11.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
pidfs: allow retrieval of namespace file descriptors
nsfs: add open_namespace()
nsproxy: add helper to go from arbitrary namespace to ns_common
nsproxy: add a cleanup helper for nsproxy
file: add take_fd() cleanup helper
Diffstat (limited to 'fs/internal.h')
| -rw-r--r-- | fs/internal.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/internal.h b/fs/internal.h index f26454c60a98..cdd73209eecb 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -17,6 +17,7 @@ struct fs_context; struct pipe_inode_info; struct iov_iter; struct mnt_idmap; +struct ns_common; /* * block/bdev.c @@ -239,6 +240,7 @@ extern void mnt_pin_kill(struct mount *m); * fs/nsfs.c */ extern const struct dentry_operations ns_dentry_operations; +int open_namespace(struct ns_common *ns); /* * fs/stat.c: |