include/linux/limits.h

   1 #ifndef _LINUX_LIMITS_H
   2 #define _LINUX_LIMITS_H
   3
   4 #define NR_OPEN         1024
   5
   6 #define NGROUPS_MAX       32    /* supplemental group IDs are available */
   7 #define ARG_MAX       131072    /* # bytes of args + environ for exec() */
   8 #define CHILD_MAX        999    /* no limit :-) */
   9 #define OPEN_MAX         256    /* # open files a process may have */
  10 #define LINK_MAX         127    /* # links a file may have */
  11 #define MAX_CANON        255    /* size of the canonical input queue */
  12 #define MAX_INPUT        255    /* size of the type-ahead buffer */
  13 #define NAME_MAX         255    /* # chars in a file name */
  14 #define PATH_MAX        4095    /* # chars in a path name */
  15 #define PIPE_BUF        4096    /* # bytes in atomic write to a pipe */
  16
  17 #define MAX_ITIMERS       32    /* # POSIX.1b itimers per process */
  18
  19 #define RTSIG_MAX         32
  20
  21 #endif