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+/* Bit values & structures for resource limits.  4.4 BSD/generic GNU version.
+   Copyright (C) 1994, 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* These are the values for 4.4 BSD and GNU.  Earlier BSD systems have a
+   subset of these kinds of resource limit.  In systems where `getrlimit'
+   and `setrlimit' are not system calls, these are the values used by the C
+   library to emulate them.  */
+
+/* Kinds of resource limit.  */
+enum __rlimit_resource
+  {
+    /* Per-process CPU limit, in seconds.  */
+    RLIMIT_CPU,
+#define	RLIMIT_CPU	RLIMIT_CPU
+    /* Largest file that can be created, in bytes.  */
+    RLIMIT_FSIZE,
+#define	RLIMIT_FSIZE	RLIMIT_FSIZE
+    /* Maximum size of data segment, in bytes.  */
+    RLIMIT_DATA,
+#define	RLIMIT_DATA	RLIMIT_DATA
+    /* Maximum size of stack segment, in bytes.  */
+    RLIMIT_STACK,
+#define	RLIMIT_STACK	RLIMIT_STACK
+    /* Largest core file that can be created, in bytes.  */
+    RLIMIT_CORE,
+#define	RLIMIT_CORE	RLIMIT_CORE
+    /* Largest resident set size, in bytes.
+       This affects swapping; processes that are exceeding their
+       resident set size will be more likely to have physical memory
+       taken from them.  */
+    RLIMIT_RSS,
+#define	RLIMIT_RSS	RLIMIT_RSS
+    /* Locked-in-memory address space.  */
+    RLIMIT_MEMLOCK,
+#define	RLIMIT_MEMLOCK	RLIMIT_MEMLOCK
+    /* Number of processes.  */
+    RLIMIT_NPROC,
+#define	RLIMIT_NPROC	RLIMIT_NPROC
+    /* Number of open files.  */
+    RLIMIT_OFILE,
+    RLIMIT_NOFILE = RLIMIT_OFILE, /* Another name for the same thing.  */
+#define	RLIMIT_OFILE	RLIMIT_OFILE
+#define	RLIMIT_NOFILE	RLIMIT_NOFILE
+
+    RLIMIT_NLIMITS,		/* Number of limit flavors.  */
+    RLIM_NLIMITS = RLIMIT_NLIMITS, /* Traditional name for same.  */
+
+    RLIM_INFINITY = 0x7fffffff /* Value to indicate that there is no limit.  */
+#define RLIM_INFINITY RLIM_INFINITY
+  };
+
+struct rlimit
+  {
+    /* The current (soft) limit.  */
+    int rlim_cur;
+    /* The hard limit.  */
+    int rlim_max;
+  };
+
+/* Whose usage statistics do you want?  */
+enum __rusage_who
+/* The macro definitions are necessary because some programs want
+   to test for operating system features with #ifdef RUSAGE_SELF.
+   In ISO C the reflexive definition is a no-op.  */
+  {
+    /* The calling process.  */
+    RUSAGE_SELF = 0,
+#define RUSAGE_SELF     RUSAGE_SELF
+    /* All of its terminated child processes.  */
+    RUSAGE_CHILDREN = -1
+#define RUSAGE_CHILDREN RUSAGE_CHILDREN
+  };
+
+#include <sys/time.h>           /* For `struct timeval'.  */
+
+/* Structure which says how much of each resource has been used.  */
+struct rusage
+  {
+    /* Total amount of user time used.  */
+    struct timeval ru_utime;
+    /* Total amount of system time used.  */
+    struct timeval ru_stime;
+    /* Maximum resident set size (in kilobytes).  */
+    long int ru_maxrss;
+    /* Amount of sharing of text segment memory
+       with other processes (kilobyte-seconds).  */
+    long int ru_ixrss;
+    /* Amount of data segment memory used (kilobyte-seconds).  */
+    long int ru_idrss;
+    /* Amount of stack memory used (kilobyte-seconds).  */
+    long int ru_isrss;
+    /* Number of soft page faults (i.e. those serviced by reclaiming
+       a page from the list of pages awaiting reallocation.  */
+    long int ru_minflt;
+    /* Number of hard page faults (i.e. those that required I/O).  */
+    long int ru_majflt;
+    /* Number of times a process was swapped out of physical memory.  */
+    long int ru_nswap;
+    /* Number of input operations via the file system.  Note: This
+       and `ru_oublock' do not include operations with the cache.  */
+    long int ru_inblock;
+    /* Number of output operations via the file system.  */
+    long int ru_oublock;
+    /* Number of IPC messages sent.  */
+    long int ru_msgsnd;
+    /* Number of IPC messages received.  */
+    long int ru_msgrcv;
+    /* Number of signals delivered.  */
+    long int ru_nsignals;
+    /* Number of voluntary context switches, i.e. because the process
+       gave up the process before it had to (usually to wait for some
+       resource to be available).  */
+    long int ru_nvcsw;
+    /* Number of involuntary context switches, i.e. a higher priority process
+       became runnable or the current process used up its time slice.  */
+    long int ru_nivcsw;
+  };
+
+/* Priority limits.  */
+#define PRIO_MIN        -20     /* Minimum priority a process can have.  */
+#define PRIO_MAX        20      /* Maximum priority a process can have.  */
+
+/* The type of the WHICH argument to `getpriority' and `setpriority',
+   indicating what flavor of entity the WHO argument specifies.  */
+enum __priority_which
+  {
+    PRIO_PROCESS = 0,           /* WHO is a process ID.  */
+    PRIO_PGRP = 1,              /* WHO is a process group ID.  */
+    PRIO_USER = 2               /* WHO is a user ID.  */
+  };