linux/include/linux/limits.h
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   1#ifndef _LINUX_LIMITS_H
   2#define _LINUX_LIMITS_H
   3
   4#define NR_OPEN         1024
   5
   6#define NGROUPS_MAX    65536    /* supplemental group IDs are available */
   7#define ARG_MAX       131072    /* # bytes of args + environ for exec() */
   8#define LINK_MAX         127    /* # links a file may have */
   9#define MAX_CANON        255    /* size of the canonical input queue */
  10#define MAX_INPUT        255    /* size of the type-ahead buffer */
  11#define NAME_MAX         255    /* # chars in a file name */
  12#define PATH_MAX        4096    /* # chars in a path name including nul */
  13#define PIPE_BUF        4096    /* # bytes in atomic write to a pipe */
  14#define XATTR_NAME_MAX   255    /* # chars in an extended attribute name */
  15#define XATTR_SIZE_MAX 65536    /* size of an extended attribute value (64k) */
  16#define XATTR_LIST_MAX 65536    /* size of extended attribute namelist (64k) */
  17
  18#define RTSIG_MAX         32
  19
  20#endif
  21
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