diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2020-02-20 08:08:20 -0600 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2020-02-28 12:06:14 -0600 |
| commit | 69879c01a0c3f70e0887cfb4d9ff439814361e46 (patch) | |
| tree | 1da3b3be89a43a37d06797ffbc5720ed116fad25 /include/linux/proc_ns.h | |
| parent | 76313c70c52f930af4afd21684509ca52297ea71 (diff) | |
proc: Remove the now unnecessary internal mount of proc
There remains no more code in the kernel using pids_ns->proc_mnt,
therefore remove it from the kernel.
The big benefit of this change is that one of the most error prone and
tricky parts of the pid namespace implementation, maintaining kernel
mounts of proc is removed.
In addition removing the unnecessary complexity of the kernel mount
fixes a regression that caused the proc mount options to be ignored.
Now that the initial mount of proc comes from userspace, those mount
options are again honored. This fixes Android's usage of the proc
hidepid option.
Reported-by: Alistair Strachan <astrachan@google.com>
Fixes: e94591d0d90c ("proc: Convert proc_mount to use mount_ns.")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'include/linux/proc_ns.h')
| -rw-r--r-- | include/linux/proc_ns.h | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/include/linux/proc_ns.h b/include/linux/proc_ns.h index 4626b1ac3b6c..e1106a077c1a 100644 --- a/include/linux/proc_ns.h +++ b/include/linux/proc_ns.h @@ -50,16 +50,11 @@ enum { #ifdef CONFIG_PROC_FS -extern int pid_ns_prepare_proc(struct pid_namespace *ns); -extern void pid_ns_release_proc(struct pid_namespace *ns); extern int proc_alloc_inum(unsigned int *pino); extern void proc_free_inum(unsigned int inum); #else /* CONFIG_PROC_FS */ -static inline int pid_ns_prepare_proc(struct pid_namespace *ns) { return 0; } -static inline void pid_ns_release_proc(struct pid_namespace *ns) {} - static inline int proc_alloc_inum(unsigned int *inum) { *inum = 1; |