ceph/src/pmdk/src/librpmem/librpmem.c

   1 // SPDX-License-Identifier: BSD-3-Clause
   2 /* Copyright 2016-2019, Intel Corporation */
   3
   4 /*
   5  * librpmem.c -- entry points for librpmem
   6  */
   7
   8 #include <stdio.h>
   9 #include <stdint.h>
  10
  11 #include "librpmem.h"
  12
  13 #include "rpmem.h"
  14 #include "rpmem_common.h"
  15 #include "rpmem_util.h"
  16 #include "rpmem_fip.h"
  17 #include "util.h"
  18 #include "out.h"
  19
  20 /*
  21  * librpmem_init -- load-time initialization for librpmem
  22  *
  23  * Called automatically by the run-time loader.
  24  */
  25 ATTR_CONSTRUCTOR
  26 void
  27 librpmem_init(void)
  28 {
  29         util_init();
  30         out_init(RPMEM_LOG_PREFIX, RPMEM_LOG_LEVEL_VAR, RPMEM_LOG_FILE_VAR,
  31                         RPMEM_MAJOR_VERSION, RPMEM_MINOR_VERSION);
  32         LOG(3, NULL);
  33         rpmem_util_cmds_init();
  34
  35         rpmem_util_get_env_max_nlanes(&Rpmem_max_nlanes);
  36         rpmem_util_get_env_wq_size(&Rpmem_wq_size);
  37 }
  38
  39 /*
  40  * librpmem_fini -- librpmem cleanup routine
  41  *
  42  * Called automatically when the process terminates.
  43  */
  44 ATTR_DESTRUCTOR
  45 void
  46 librpmem_fini(void)
  47 {
  48         LOG(3, NULL);
  49         rpmem_util_cmds_fini();
  50         out_fini();
  51 }
  52
  53 /*
  54  * rpmem_check_version -- see if library meets application version requirements
  55  */
  56 const char *
  57 rpmem_check_version(unsigned major_required, unsigned minor_required)
  58 {
  59         LOG(3, "major_required %u minor_required %u",
  60                         major_required, minor_required);
  61
  62         if (major_required != RPMEM_MAJOR_VERSION) {
  63                 ERR("librpmem major version mismatch (need %u, found %u)",
  64                         major_required, RPMEM_MAJOR_VERSION);
  65                 return out_get_errormsg();
  66         }
  67
  68         if (minor_required > RPMEM_MINOR_VERSION) {
  69                 ERR("librpmem minor version mismatch (need %u, found %u)",
  70                         minor_required, RPMEM_MINOR_VERSION);
  71                 return out_get_errormsg();
  72         }
  73
  74         return NULL;
  75 }
  76
  77 /*
  78  * rpmem_errormsg -- return the last error message
  79  */
  80 const char *
  81 rpmem_errormsg(void)
  82 {
  83         return out_get_errormsg();
  84 }