1  /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2  #ifndef _UAPI_LINUX_LIMITS_H
3  #define _UAPI_LINUX_LIMITS_H
4  
5  #define NR_OPEN	        1024
6  
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) */
18  
19  #define RTSIG_MAX	  32
20  
21  #endif
22