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mdbx: prohibit non-WRITEMAP modes under OpenBSD.

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Temporary `workaround` for OpenBSD kernel's bug.
See https://github.com/leo-yuriev/libmdbx/issues/67
This commit is contained in:
Leonid Yuriev 2019-11-14 15:12:19 +03:00
parent f0c6292fa3
commit cb8fac6f5f
1 changed files with 11 additions and 0 deletions
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11
src/elements/core.c
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@ -8713,6 +8713,17 @@ int __cold mdbx_env_open(MDBX_env *env, const char *path, unsigned flags,
flags &= ~(MDBX_WRITEMAP | MDBX_MAPASYNC | MDBX_NOSYNC | MDBX_NOMETASYNC |
MDBX_COALESCE | MDBX_LIFORECLAIM | MDBX_NOMEMINIT);
} else {
#ifdef __OpenBSD__
/* Temporary `workaround` for OpenBSD kernel's bug.
* See https://github.com/leo-yuriev/libmdbx/issues/67 */
if ((flags & MDBX_WRITEMAP) == 0) {
mdbx_debug_log(MDBX_LOG_ERROR, __func__, __LINE__,
"OpenBSD requires MDBX_WRITEMAP because of an internal "
"bug(s) in a file/buffer/page cache.\n");
rc = 42 /* ENOPROTOOPT */;
goto bailout;
}
#endif /* __OpenBSD__ */
env->me_dirtylist = mdbx_calloc(MDBX_DPL_TXNFULL + 1, sizeof(MDBX_DP));
if (!env->me_dirtylist)
rc = MDBX_ENOMEM;