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| author | Christian Brauner <brauner@kernel.org> | 2025-09-22 14:42:37 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-09-22 14:47:10 +0200 |
| commit | 5890f504ef543190beae2a4e244bbfa7c3e0b57c (patch) | |
| tree | 9d38639cdb55dfb9753dcf2c167222dcc6063643 | |
| parent | d7610cb7454bbd8bf6d58f71b0ed57155d3c545f (diff) | |
ns: add ns_debug()
Add ns_debug() that asserts that the correct operations are used for the
namespace type.
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
| -rw-r--r-- | kernel/nscommon.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/kernel/nscommon.c b/kernel/nscommon.c index 7aa2be6a0c32..3cef89ddef41 100644 --- a/kernel/nscommon.c +++ b/kernel/nscommon.c @@ -2,6 +2,55 @@ #include <linux/ns_common.h> #include <linux/proc_ns.h> +#include <linux/vfsdebug.h> + +#ifdef CONFIG_DEBUG_VFS +static void ns_debug(struct ns_common *ns, const struct proc_ns_operations *ops) +{ + switch (ns->ops->type) { +#ifdef CONFIG_CGROUPS + case CLONE_NEWCGROUP: + VFS_WARN_ON_ONCE(ops != &cgroupns_operations); + break; +#endif +#ifdef CONFIG_IPC_NS + case CLONE_NEWIPC: + VFS_WARN_ON_ONCE(ops != &ipcns_operations); + break; +#endif + case CLONE_NEWNS: + VFS_WARN_ON_ONCE(ops != &mntns_operations); + break; +#ifdef CONFIG_NET_NS + case CLONE_NEWNET: + VFS_WARN_ON_ONCE(ops != &netns_operations); + break; +#endif +#ifdef CONFIG_PID_NS + case CLONE_NEWPID: + VFS_WARN_ON_ONCE(ops != &pidns_operations); + break; +#endif +#ifdef CONFIG_TIME_NS + case CLONE_NEWTIME: + VFS_WARN_ON_ONCE(ops != &timens_operations); + break; +#endif +#ifdef CONFIG_USER_NS + case CLONE_NEWUSER: + VFS_WARN_ON_ONCE(ops != &userns_operations); + break; +#endif +#ifdef CONFIG_UTS_NS + case CLONE_NEWUTS: + VFS_WARN_ON_ONCE(ops != &utsns_operations); + break; +#endif + default: + VFS_WARN_ON_ONCE(true); + } +} +#endif int __ns_common_init(struct ns_common *ns, const struct proc_ns_operations *ops, int inum) { @@ -12,6 +61,10 @@ int __ns_common_init(struct ns_common *ns, const struct proc_ns_operations *ops, RB_CLEAR_NODE(&ns->ns_tree_node); INIT_LIST_HEAD(&ns->ns_list_node); +#ifdef CONFIG_DEBUG_VFS + ns_debug(ns, ops); +#endif + if (inum) { ns->inum = inum; return 0; |