initial import

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diff --git a/resource/sys/resource.h b/resource/sys/resource.h
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+/* Copyright (C) 1992, 1994 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., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#ifndef	_SYS_RESOURCE_H
+
+#define	_SYS_RESOURCE_H	1
+#include <features.h>
+
+__BEGIN_DECLS
+
+/* Get the system-dependent definitions of RLIM_*.  */
+#include <resourcebits.h>
+
+struct rlimit
+  {
+    /* The current (soft) limit.  */
+    int rlim_cur;
+    /* The hard limit.  */
+    int rlim_max;
+  };
+
+/* Value used to indicate that there is no limit.  */
+#define RLIM_INFINITY 0x7fffffff
+
+/* Put the soft and hard limits for RESOURCE in *RLIMITS.
+   Returns 0 if successful, -1 if not (and sets errno).  */
+int getrlimit __P ((enum __rlimit_resource __resource,
+		    struct rlimit * __rlimits));
+
+/* Set the soft and hard limits for RESOURCE to *RLIMITS.
+   Only the super-user can increase hard limits.
+   Return 0 if successful, -1 if not (and sets errno).  */
+int setrlimit __P ((enum __rlimit_resource __resource,
+		    struct rlimit * __rlimits));
+
+
+/* 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 ANSI 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 ru_maxrss;
+    /* Amount of sharing of text segment memory
+       with other processes (kilobyte-seconds).  */
+    long ru_ixrss;
+    /* Amount of data segment memory used (kilobyte-seconds).  */
+    long ru_idrss;
+    /* Amount of stack memory used (kilobyte-seconds).  */
+    long ru_isrss;
+    /* Number of soft page faults (i.e. those serviced by reclaiming
+       a page from the list of pages awaiting reallocation.  */
+    long ru_minflt;
+    /* Number of hard page faults (i.e. those that required I/O).  */
+    long ru_majflt;
+    /* Number of times a process was swapped out of physical memory.  */
+    long ru_nswap;
+    /* Number of input operations via the file system.  Note: This
+       and `ru_oublock' do not include operations with the cache.  */
+    long ru_inblock;
+    /* Number of output operations via the file system.  */
+    long ru_oublock;
+    /* Number of IPC messages sent.  */
+    long ru_msgsnd;
+    /* Number of IPC messages received.  */
+    long ru_msgrcv;
+    /* Number of signals delivered.  */
+    long 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 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 ru_nivcsw;
+  };
+
+/* Return resource usage information on process indicated by WHO
+   and put it in *USAGE.  Returns 0 for success, -1 for failure.  */
+int __getrusage __P ((enum __rusage_who __who, struct rusage * __usage));
+int getrusage __P ((enum __rusage_who __who, struct rusage * __usage));
+
+/* Function depends on CMD:
+   1 = Return the limit on the size of a file, in units of 512 bytes.
+   2 = Set the limit on the size of a file to NEWLIMIT.  Only the
+       super-user can increase the limit.
+   3 = Return the maximum possible address of the data segment.
+   4 = Return the maximum number of files that the calling process can open.
+   Returns -1 on errors.  */
+long int __ulimit __P ((int __cmd, long int __newlimit));
+long int ulimit __P ((int __cmd, long int __newlimit));
+
+
+/* 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.  */
+  };
+
+/* Return the highest priority of any process specified by WHICH and WHO
+   (see above); if WHO is zero, the current process, process group, or user
+   (as specified by WHO) is used.  A lower priority number means higher
+   priority.  Priorities range from PRIO_MIN to PRIO_MAX (above).  */
+extern int getpriority __P ((enum __priority_which __which, int __who));
+
+/* Set the priority of all processes specified by WHICH and WHO (see above)
+   to PRIO.  Returns 0 on success, -1 on errors.  */
+extern int setpriority __P ((enum __priority_which __which, int __who,
+			     int __prio));
+
+
+__END_DECLS
+
+#endif /* resource.h  */