1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _UAPI_LINUX_LIMITS_H
3 #define _UAPI_LINUX_LIMITS_H
7 #define NGROUPS_MAX 65536 /* supplemental group IDs are available */
8 #define ARG_MAX 131072 /* # bytes of args + environ for exec() */
9 #define LINK_MAX 127 /* # links a file may have */
10 #define MAX_CANON 255 /* size of the canonical input queue */
11 #define MAX_INPUT 255 /* size of the type-ahead buffer */
12 #define NAME_MAX 255 /* # chars in a file name */
13 #define PATH_MAX 4096 /* # chars in a path name including nul */
14 #define PIPE_BUF 4096 /* # bytes in atomic write to a pipe */
15 #define XATTR_NAME_MAX 255 /* # chars in an extended attribute name */
16 #define XATTR_SIZE_MAX 65536 /* size of an extended attribute value (64k) */
17 #define XATTR_LIST_MAX 65536 /* size of extended attribute namelist (64k) */