16f52b16cSGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*54d50897SMasahiro Yamada #ifndef _UAPI_LINUX_LIMITS_H 3*54d50897SMasahiro Yamada #define _UAPI_LINUX_LIMITS_H 4607ca46eSDavid Howells 5607ca46eSDavid Howells #define NR_OPEN 1024 6607ca46eSDavid Howells 7607ca46eSDavid Howells #define NGROUPS_MAX 65536 /* supplemental group IDs are available */ 8607ca46eSDavid Howells #define ARG_MAX 131072 /* # bytes of args + environ for exec() */ 9607ca46eSDavid Howells #define LINK_MAX 127 /* # links a file may have */ 10607ca46eSDavid Howells #define MAX_CANON 255 /* size of the canonical input queue */ 11607ca46eSDavid Howells #define MAX_INPUT 255 /* size of the type-ahead buffer */ 12607ca46eSDavid Howells #define NAME_MAX 255 /* # chars in a file name */ 13607ca46eSDavid Howells #define PATH_MAX 4096 /* # chars in a path name including nul */ 14607ca46eSDavid Howells #define PIPE_BUF 4096 /* # bytes in atomic write to a pipe */ 15607ca46eSDavid Howells #define XATTR_NAME_MAX 255 /* # chars in an extended attribute name */ 16607ca46eSDavid Howells #define XATTR_SIZE_MAX 65536 /* size of an extended attribute value (64k) */ 17607ca46eSDavid Howells #define XATTR_LIST_MAX 65536 /* size of extended attribute namelist (64k) */ 18607ca46eSDavid Howells 19607ca46eSDavid Howells #define RTSIG_MAX 32 20607ca46eSDavid Howells 21607ca46eSDavid Howells #endif 22