ceph/src/pmdk/src/libpmem2/config.h

   1 /* SPDX-License-Identifier: BSD-3-Clause */
   2 /* Copyright 2019-2020, Intel Corporation */
   3
   4 /*
   5  * config.h -- internal definitions for pmem2_config
   6  */
   7 #ifndef PMEM2_CONFIG_H
   8 #define PMEM2_CONFIG_H
   9
  10 #include "libpmem2.h"
  11
  12 #define PMEM2_GRANULARITY_INVALID ((enum pmem2_granularity) (-1))
  13 #define PMEM2_ADDRESS_ANY 0 /* default value of the address request type */
  14
  15 struct pmem2_config {
  16         /* offset from the beginning of the file */
  17         size_t offset;
  18         size_t length; /* length of the mapping */
  19         /* persistence granularity requested by user */
  20         void *addr; /* address of the mapping */
  21         int addr_request; /* address request type */
  22         enum pmem2_granularity requested_max_granularity;
  23         enum pmem2_sharing_type sharing; /* the way the file will be mapped */
  24         unsigned protection_flag;
  25         struct pmem2_vm_reservation *reserv;
  26         size_t reserv_offset;
  27 };
  28
  29 void pmem2_config_init(struct pmem2_config *cfg);
  30
  31 int pmem2_config_validate_length(const struct pmem2_config *cfg,
  32                 size_t file_len, size_t alignment);
  33
  34 #endif /* PMEM2_CONFIG_H */