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mdbx: add MDBX_EXCLUSIVE instead of mdbx_env_open_ex().

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Change-Id: I3c817d58d971385bcd07643df14beaf7122c7836
This commit is contained in:
Leo Yuriev
2018-06-13 17:02:31 +03:00
parent 09ad941a05
commit 0dfa9cd09a
8 changed files with 69 additions and 46 deletions
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10
src/osal.c
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@@ -409,19 +409,20 @@ int mdbx_fastmutex_release(mdbx_fastmutex_t *fastmutex) {
/*----------------------------------------------------------------------------*/
int mdbx_openfile(const char *pathname, int flags, mode_t mode,
mdbx_filehandle_t *fd) {
mdbx_filehandle_t *fd, bool exclusive) {
*fd = INVALID_HANDLE_VALUE;
#if defined(_WIN32) || defined(_WIN64)
(void)mode;
DWORD DesiredAccess;
DWORD ShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;
DWORD DesiredAccess, ShareMode;
DWORD FlagsAndAttributes = FILE_ATTRIBUTE_NORMAL;
switch (flags & (O_RDONLY | O_WRONLY | O_RDWR)) {
default:
return ERROR_INVALID_PARAMETER;
case O_RDONLY:
DesiredAccess = GENERIC_READ;
ShareMode =
exclusive ? FILE_SHARE_READ : (FILE_SHARE_READ | FILE_SHARE_WRITE);
break;
case O_WRONLY: /* assume for MDBX_env_copy() and friends output */
DesiredAccess = GENERIC_WRITE;
@@ -430,6 +431,7 @@ int mdbx_openfile(const char *pathname, int flags, mode_t mode,
break;
case O_RDWR:
DesiredAccess = GENERIC_READ | GENERIC_WRITE;
ShareMode = exclusive ? 0 : (FILE_SHARE_READ | FILE_SHARE_WRITE);
break;
}
@@ -468,7 +470,7 @@ int mdbx_openfile(const char *pathname, int flags, mode_t mode,
}
}
#else
(void)exclusive;
#ifdef O_CLOEXEC
flags |= O_CLOEXEC;
#endif