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      1 #ifndef _LINUX_RESOURCE_H
      2 #define _LINUX_RESOURCE_H
      3 
      4 #include <linux/time.h>
      5 
      6 struct task_struct;
      7 
      8 /*
      9  * Resource control/accounting header file for linux
     10  */
     11 
     12 /*
     13  * Definition of struct rusage taken from BSD 4.3 Reno
     14  *
     15  * We don't support all of these yet, but we might as well have them....
     16  * Otherwise, each time we add new items, programs which depend on this
     17  * structure will lose.  This reduces the chances of that happening.
     18  */
     19 #define	RUSAGE_SELF	0
     20 #define	RUSAGE_CHILDREN	(-1)
     21 #define RUSAGE_BOTH	(-2)		/* sys_wait4() uses this */
     22 
     23 struct	rusage {
     24 	struct timeval ru_utime;	/* user time used */
     25 	struct timeval ru_stime;	/* system time used */
     26 	long	ru_maxrss;		/* maximum resident set size */
     27 	long	ru_ixrss;		/* integral shared memory size */
     28 	long	ru_idrss;		/* integral unshared data size */
     29 	long	ru_isrss;		/* integral unshared stack size */
     30 	long	ru_minflt;		/* page reclaims */
     31 	long	ru_majflt;		/* page faults */
     32 	long	ru_nswap;		/* swaps */
     33 	long	ru_inblock;		/* block input operations */
     34 	long	ru_oublock;		/* block output operations */
     35 	long	ru_msgsnd;		/* messages sent */
     36 	long	ru_msgrcv;		/* messages received */
     37 	long	ru_nsignals;		/* signals received */
     38 	long	ru_nvcsw;		/* voluntary context switches */
     39 	long	ru_nivcsw;		/* involuntary " */
     40 };
     41 
     42 struct rlimit {
     43 	unsigned long	rlim_cur;
     44 	unsigned long	rlim_max;
     45 };
     46 
     47 #define	PRIO_MIN	(-20)
     48 #define	PRIO_MAX	20
     49 
     50 #define	PRIO_PROCESS	0
     51 #define	PRIO_PGRP	1
     52 #define	PRIO_USER	2
     53 
     54 /*
     55  * Limit the stack by to some sane default: root can always
     56  * increase this limit if needed..  8MB seems reasonable.
     57  */
     58 #define _STK_LIM	(8*1024*1024)
     59 
     60 /*
     61  * GPG wants 32kB of mlocked memory, to make sure pass phrases
     62  * and other sensitive information are never written to disk.
     63  */
     64 #define MLOCK_LIMIT	(8 * PAGE_SIZE)
     65 
     66 /*
     67  * Due to binary compatibility, the actual resource numbers
     68  * may be different for different linux versions..
     69  */
     70 #include <asm/resource.h>
     71 
     72 int getrusage(struct task_struct *p, int who, struct rusage __user *ru);
     73 
     74 #endif
     75