5b41535aac
It now allows also reading of limits. I.e. all read and writes will later use this function. It takes two parameters, new and old limits which can be both NULL. If new is non-NULL, the value in it is set to rlimits. If old is non-NULL, current rlimits are stored there. If both are non-NULL, old are stored prior to setting the new ones, atomically. (Similar to sigaction.) Signed-off-by: Jiri Slaby <jslaby@suse.cz>
88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
#ifndef _LINUX_RESOURCE_H
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#define _LINUX_RESOURCE_H
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#include <linux/time.h>
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/*
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* Resource control/accounting header file for linux
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*/
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/*
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* Definition of struct rusage taken from BSD 4.3 Reno
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*
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* We don't support all of these yet, but we might as well have them....
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* Otherwise, each time we add new items, programs which depend on this
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* structure will lose. This reduces the chances of that happening.
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*/
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#define RUSAGE_SELF 0
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#define RUSAGE_CHILDREN (-1)
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#define RUSAGE_BOTH (-2) /* sys_wait4() uses this */
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#define RUSAGE_THREAD 1 /* only the calling thread */
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struct rusage {
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struct timeval ru_utime; /* user time used */
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struct timeval ru_stime; /* system time used */
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long ru_maxrss; /* maximum resident set size */
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long ru_ixrss; /* integral shared memory size */
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long ru_idrss; /* integral unshared data size */
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long ru_isrss; /* integral unshared stack size */
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long ru_minflt; /* page reclaims */
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long ru_majflt; /* page faults */
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long ru_nswap; /* swaps */
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long ru_inblock; /* block input operations */
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long ru_oublock; /* block output operations */
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long ru_msgsnd; /* messages sent */
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long ru_msgrcv; /* messages received */
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long ru_nsignals; /* signals received */
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long ru_nvcsw; /* voluntary context switches */
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long ru_nivcsw; /* involuntary " */
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};
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struct rlimit {
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unsigned long rlim_cur;
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unsigned long rlim_max;
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};
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#define RLIM64_INFINITY (~0ULL)
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struct rlimit64 {
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__u64 rlim_cur;
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__u64 rlim_max;
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};
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#define PRIO_MIN (-20)
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#define PRIO_MAX 20
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#define PRIO_PROCESS 0
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#define PRIO_PGRP 1
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#define PRIO_USER 2
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/*
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* Limit the stack by to some sane default: root can always
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* increase this limit if needed.. 8MB seems reasonable.
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*/
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#define _STK_LIM (8*1024*1024)
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/*
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* GPG2 wants 64kB of mlocked memory, to make sure pass phrases
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* and other sensitive information are never written to disk.
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*/
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#define MLOCK_LIMIT ((PAGE_SIZE > 64*1024) ? PAGE_SIZE : 64*1024)
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/*
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* Due to binary compatibility, the actual resource numbers
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* may be different for different linux versions..
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*/
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#include <asm/resource.h>
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#ifdef __KERNEL__
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struct task_struct;
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int getrusage(struct task_struct *p, int who, struct rusage __user *ru);
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int do_prlimit(struct task_struct *tsk, unsigned int resource,
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struct rlimit *new_rlim, struct rlimit *old_rlim);
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#endif /* __KERNEL__ */
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#endif
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