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| author | Christian Brauner <brauner@kernel.org> | 2025-01-28 13:33:41 +0300 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-02-12 14:12:28 +0300 |
| commit | c4a16820d90199409c9bf01c4f794e1e9e8d8fd8 (patch) | |
| tree | b3de182aaedb70d4278e12becfc23a829ffc9a82 /include/linux | |
| parent | 474f7825d5335798742b92f067e1d22365013107 (diff) | |
| download | linux-c4a16820d90199409c9bf01c4f794e1e9e8d8fd8.tar.xz | |
fs: add open_tree_attr()
Add open_tree_attr() which allow to atomically create a detached mount
tree and set mount options on it. If OPEN_TREE_CLONE is used this will
allow the creation of a detached mount with a new set of mount options
without it ever being exposed to userspace without that set of mount
options applied.
Link: https://lore.kernel.org/r/20250128-work-mnt_idmap-update-v2-v1-3-c25feb0d2eb3@kernel.org
Reviewed-by: "Seth Forshee (DigitalOcean)" <sforshee@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/syscalls.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index c6333204d451..079ea1d09d85 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -951,6 +951,10 @@ asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags, asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len, int flags, uint32_t sig); asmlinkage long sys_open_tree(int dfd, const char __user *path, unsigned flags); +asmlinkage long sys_open_tree_attr(int dfd, const char __user *path, + unsigned flags, + struct mount_attr __user *uattr, + size_t usize); asmlinkage long sys_move_mount(int from_dfd, const char __user *from_path, int to_dfd, const char __user *to_path, unsigned int ms_flags); |