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authorChristian Brauner <brauner@kernel.org>2025-06-06 11:45:09 +0200
committerChristian Brauner <brauner@kernel.org>2025-06-11 11:59:08 +0200
commit7f4f229195b73606ded77e56943f463b78adf635 (patch)
tree552a87c24c71f2fbaa69871a470889dda0ca9896 /include/uapi/linux
parent9b0240b3ccc325c7a96cf362877180bc9e10d546 (diff)
mntns: use stable inode number for initial mount ns
Apart from the network and mount namespace all other namespaces expose a stable inode number and userspace has been relying on that for a very long time now. It's very much heavily used API. Align the mount namespace and use a stable inode number from the reserved procfs inode number space so this is consistent across all namespaces. Link: https://lore.kernel.org/20250606-work-nsfs-v1-3-b8749c9a8844@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'include/uapi/linux')
-rw-r--r--include/uapi/linux/nsfs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/nsfs.h b/include/uapi/linux/nsfs.h
index 393778489d85..97d8d80d139f 100644
--- a/include/uapi/linux/nsfs.h
+++ b/include/uapi/linux/nsfs.h
@@ -50,6 +50,7 @@ enum init_ns_ino {
CGROUP_NS_INIT_INO = 0xEFFFFFFBU,
TIME_NS_INIT_INO = 0xEFFFFFFAU,
NET_NS_INIT_INO = 0xEFFFFFF9U,
+ MNT_NS_INIT_INO = 0xEFFFFFF8U,
};
#endif /* __LINUX_NSFS_H */