ceph/src/pmdk/src/libpmem2/pmem2_utils.c

   1 // SPDX-License-Identifier: BSD-3-Clause
   2 /* Copyright 2019-2020, Intel Corporation */
   3
   4 /*
   5  * pmem2_utils.c -- libpmem2 utilities functions
   6  */
   7
   8 #include <errno.h>
   9 #include "alloc.h"
  10 #include "libpmem2.h"
  11 #include "out.h"
  12 #include "pmem2_utils.h"
  13 #include "util.h"
  14
  15 /*
  16  * pmem2_malloc -- allocate a buffer and handle an error
  17  */
  18 void *
  19 pmem2_malloc(size_t size, int *err)
  20 {
  21         void *ptr = Malloc(size);
  22         *err = 0;
  23
  24         if (ptr == NULL) {
  25                 ERR("!malloc(%zu)", size);
  26                 *err = PMEM2_E_ERRNO;
  27         }
  28
  29         return ptr;
  30 }
  31
  32 /*
  33  * pmem2_zalloc -- allocate a buffer, zero it and handle an error
  34  */
  35 void *
  36 pmem2_zalloc(size_t size, int *err)
  37 {
  38         void *ptr = Zalloc(size);
  39         *err = 0;
  40
  41         if (ptr == NULL) {
  42                 ERR("!malloc(%zu)", size);
  43                 *err = PMEM2_E_ERRNO;
  44         }
  45
  46         return ptr;
  47 }
  48
  49 /*
  50  * pmem2_realloc -- reallocate a buffer and handle an error
  51  */
  52 void *
  53 pmem2_realloc(void *ptr, size_t size, int *err)
  54 {
  55         void *newptr = Realloc(ptr, size);
  56         *err = 0;
  57
  58         if (newptr == NULL) {
  59                 ERR("!realloc(%zu)", size);
  60                 *err = PMEM2_E_ERRNO;
  61         }
  62
  63         return newptr;
  64 }
  65
  66 int
  67 pmem2_err_to_errno(int err)
  68 {
  69         if (err > 0)
  70                 FATAL("positive error code is a bug in libpmem2");
  71
  72         if (err == PMEM2_E_NOSUPP)
  73                 return ENOTSUP;
  74
  75         if (err <= PMEM2_E_UNKNOWN)
  76                 return EINVAL;
  77
  78         return -err;
  79 }
  80
  81 #ifdef _WIN32
  82 /*
  83  * converts windows error codes to pmem2 error
  84  */
  85 int
  86 pmem2_lasterror_to_err()
  87 {
  88         int err = util_lasterror_to_errno(GetLastError());
  89
  90         if (err == -1)
  91                 return PMEM2_E_UNKNOWN;
  92
  93         return -err;
  94 }
  95 #endif