58 static int proc_parse_hidepid_param(struct fs_context *fc, struct fs_parameter *param)  in proc_parse_hidepid_param()  argument
60 	struct proc_fs_context *ctx = fc->fs_private;  in proc_parse_hidepid_param()
66 		return invalf(fc, "proc: unexpected type of hidepid value\n");  in proc_parse_hidepid_param()
70 			return invalf(fc, "proc: unknown value of hidepid - %s\n", param->string);  in proc_parse_hidepid_param()
84 		return invalf(fc, "proc: unknown value of hidepid - %s\n", param->string);  in proc_parse_hidepid_param()
89 static int proc_parse_subset_param(struct fs_context *fc, char *value)  in proc_parse_subset_param()  argument
91 	struct proc_fs_context *ctx = fc->fs_private;  in proc_parse_subset_param()
103 				return invalf(fc, "proc: unsupported subset option - %s\n", value);  in proc_parse_subset_param()
112 static int proc_parse_param(struct fs_context *fc, struct fs_parameter *param)  in proc_parse_param()  argument
114 	struct proc_fs_context *ctx = fc->fs_private;  in proc_parse_param()
118 	opt = fs_parse(fc, proc_fs_parameters, param, &result);  in proc_parse_param()
128 		if (proc_parse_hidepid_param(fc, param))  in proc_parse_param()
133 		if (proc_parse_subset_param(fc, param->string) < 0)  in proc_parse_param()
146 			       struct fs_context *fc,  in proc_apply_options()  argument
149 	struct proc_fs_context *ctx = fc->fs_private;  in proc_apply_options()
159 static int proc_fill_super(struct super_block *s, struct fs_context *fc)  in proc_fill_super()  argument
161 	struct proc_fs_context *ctx = fc->fs_private;  in proc_fill_super()
171 	proc_apply_options(fs_info, fc, current_user_ns());  in proc_fill_super()
213 static int proc_reconfigure(struct fs_context *fc)  in proc_reconfigure()  argument
215 	struct super_block *sb = fc->root->d_sb;  in proc_reconfigure()
220 	proc_apply_options(fs_info, fc, current_user_ns());  in proc_reconfigure()
224 static int proc_get_tree(struct fs_context *fc)  in proc_get_tree()  argument
226 	return get_tree_nodev(fc, proc_fill_super);  in proc_get_tree()
229 static void proc_fs_context_free(struct fs_context *fc)  in proc_fs_context_free()  argument
231 	struct proc_fs_context *ctx = fc->fs_private;  in proc_fs_context_free()
244 static int proc_init_fs_context(struct fs_context *fc)  in proc_init_fs_context()  argument
253 	put_user_ns(fc->user_ns);  in proc_init_fs_context()
254 	fc->user_ns = get_user_ns(ctx->pid_ns->user_ns);  in proc_init_fs_context()
255 	fc->fs_private = ctx;  in proc_init_fs_context()
256 	fc->ops = &proc_fs_context_ops;  in proc_init_fs_context()