55 static int proc_parse_param(struct fs_context *fc, struct fs_parameter *param)  in proc_parse_param()  argument
57 	struct proc_fs_context *ctx = fc->fs_private;  in proc_parse_param()
61 	opt = fs_parse(fc, &proc_fs_parameters, param, &result);  in proc_parse_param()
74 			return invalf(fc, "proc: hidepid value must be between 0 and 2.\n");  in proc_parse_param()
86 			       struct fs_context *fc,  in proc_apply_options()  argument
90 	struct proc_fs_context *ctx = fc->fs_private;  in proc_apply_options()
98 static int proc_fill_super(struct super_block *s, struct fs_context *fc)  in proc_fill_super()  argument
104 	proc_apply_options(s, fc, pid_ns, current_user_ns());  in proc_fill_super()
145 static int proc_reconfigure(struct fs_context *fc)  in proc_reconfigure()  argument
147 	struct super_block *sb = fc->root->d_sb;  in proc_reconfigure()
152 	proc_apply_options(sb, fc, pid, current_user_ns());  in proc_reconfigure()
156 static int proc_get_tree(struct fs_context *fc)  in proc_get_tree()  argument
158 	struct proc_fs_context *ctx = fc->fs_private;  in proc_get_tree()
160 	return get_tree_keyed(fc, proc_fill_super, ctx->pid_ns);  in proc_get_tree()
163 static void proc_fs_context_free(struct fs_context *fc)  in proc_fs_context_free()  argument
165 	struct proc_fs_context *ctx = fc->fs_private;  in proc_fs_context_free()
178 static int proc_init_fs_context(struct fs_context *fc)  in proc_init_fs_context()  argument
187 	put_user_ns(fc->user_ns);  in proc_init_fs_context()
188 	fc->user_ns = get_user_ns(ctx->pid_ns->user_ns);  in proc_init_fs_context()
189 	fc->fs_private = ctx;  in proc_init_fs_context()
190 	fc->ops = &proc_fs_context_ops;  in proc_init_fs_context()
304 	struct fs_context *fc;  in pid_ns_prepare_proc()  local
307 	fc = fs_context_for_mount(&proc_fs_type, SB_KERNMOUNT);  in pid_ns_prepare_proc()
308 	if (IS_ERR(fc))  in pid_ns_prepare_proc()
309 		return PTR_ERR(fc);  in pid_ns_prepare_proc()
311 	if (fc->user_ns != ns->user_ns) {  in pid_ns_prepare_proc()
312 		put_user_ns(fc->user_ns);  in pid_ns_prepare_proc()
313 		fc->user_ns = get_user_ns(ns->user_ns);  in pid_ns_prepare_proc()
316 	ctx = fc->fs_private;  in pid_ns_prepare_proc()
323 	mnt = fc_mount(fc);  in pid_ns_prepare_proc()
324 	put_fs_context(fc);  in pid_ns_prepare_proc()