92b2f1bd3d
to simplify the large file check in many place Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
146 lines
5.0 KiB
C
146 lines
5.0 KiB
C
/****************************************************************************
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* include/sys/resource.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_SYS_RESOURCE_H
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#define __INCLUDE_SYS_RESOURCE_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <sys/types.h>
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#include <sys/time.h>
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#include <stdint.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Possible values of the 'which' argument of getpriority() and
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* setpriority()
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*/
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#define PRIO_PROCESS 1 /* 'who' argument is a process ID */
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#define PRIO_PGRP 2 /* 'who' argument is a process group ID */
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#define PRIO_USER 3 /* 'who' argument is a user ID */
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/* Possible values of the 'who' parameter of getrusage(): */
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#define RUSAGE_SELF 0 /* Returns information about the current
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* process */
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#define RUSAGE_CHILDREN 1 /* Returns information about children of
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* the current process */
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/* Possible values for the resource argument of getrlimit() and setrlimit() */
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#define RLIMIT_CORE 1 /* Limit on size of core dump file */
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#define RLIMIT_CPU 2 /* Limit on CPU time per process. */
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#define RLIMIT_DATA 3 /* Limit on data segment size */
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#define RLIMIT_FSIZE 4 /* Limit on file size */
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#define RLIMIT_NOFILE 5 /* Limit on number of open files */
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#define RLIMIT_STACK 6 /* Limit on stack size */
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#define RLIMIT_AS 7 /* Limit on address space size */
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#if defined(CONFIG_FS_LARGEFILE)
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# define RLIM_INFINITY UINT64_MAX /* No limit */
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# define RLIM_SAVED_MAX UINT64_MAX /* Unrepresentable saved hard limit */
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# define RLIM_SAVED_CUR UINT64_MAX /* Unrepresentable saved soft limit */
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# define RLIM64_INFINITY RLIM_INFINITY
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# define RLIM64_SAVED_MAX RLIM_SAVED_MAX
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# define RLIM64_SAVED_CUR RLIM_SAVED_CUR
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# define getrlimit64 getrlimit
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# define setrlimit64 setrlimit
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# define prlimit64 prlimit
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# define rlimit64 rlimit
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# define rlim64_t rlim_t
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#else
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/* The following symbolic constants are defined. Each is a value of type
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* rlim_t.
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*
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* On implementations where all resource limits are representable in an
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* object of type rlim_t, RLIM_SAVED_MAX and RLIM_SAVED_CUR need not be
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* distinct from RLIM_INFINITY.
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*/
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# define RLIM_INFINITY UINT32_MAX /* No limit */
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# define RLIM_SAVED_MAX UINT32_MAX /* Unrepresentable saved hard limit */
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# define RLIM_SAVED_CUR UINT32_MAX /* Unrepresentable saved soft limit */
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#endif
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/****************************************************************************
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* Type Definitions
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****************************************************************************/
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/* All resource limits are represented with this type.
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* It must be an unsigned integral type.
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*/
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#if defined(CONFIG_FS_LARGEFILE)
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typedef uint64_t rlim_t;
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#else
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typedef uint32_t rlim_t;
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#endif
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/* Minimal, compliant rlimit structure */
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struct rlimit
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{
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rlim_t rlim_cur; /* The current (soft) limit */
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rlim_t rlim_max; /* The hard limit */
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};
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/* Minimal, compliant rusage structure */
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struct rusage
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{
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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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};
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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int getpriority(int which, id_t who);
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int getrlimit(int resource, FAR struct rlimit *rlp);
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int getrusage(int who, FAR struct rusage *r_usage);
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int setpriority(int which, id_t who, int value);
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int setrlimit(int resource, FAR const struct rlimit *rlp);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __INCLUDE_SYS_RESOURCE_H */
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