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mdbx: use O_DIRECT for db-copy.

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Change-Id: Ib17fcdc2eba3382ed841a1e5e0a4f69f88c2491d
This commit is contained in:
Leonid Yuriev 2019-08-11 01:06:59 +03:00
parent 2b2eedbbf0
commit bf0e0382fc
1 changed files with 17 additions and 6 deletions
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23
src/osal.c
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@ -530,16 +530,27 @@ int mdbx_openfile(const char *pathname, int flags, mode_t mode,
(void)exclusive;
#ifdef O_CLOEXEC
flags |= O_CLOEXEC;
#endif
#endif /* O_CLOEXEC */
*fd = open(pathname, flags, mode);
if (*fd < 0)
return errno;
#if defined(FD_CLOEXEC) && defined(F_GETFD)
flags = fcntl(*fd, F_GETFD);
if (flags >= 0)
(void)fcntl(*fd, F_SETFD, flags | FD_CLOEXEC);
#endif
#if defined(FD_CLOEXEC) && !defined(O_CLOEXEC)
int fd_flags = fcntl(*fd, F_GETFD);
if (fd_flags != -1)
(void)fcntl(*fd, F_SETFD, fd_flags | FD_CLOEXEC);
#endif /* FD_CLOEXEC && !O_CLOEXEC */
if ((flags & (O_RDONLY | O_WRONLY | O_RDWR)) == O_WRONLY) {
/* assume for MDBX_env_copy() and friends output */
#if defined(O_DIRECT)
int fd_flags = fcntl(*fd, F_GETFD);
if (fd_flags != -1)
(void)fcntl(*fd, F_SETFL, fd_flags | O_DIRECT);
#endif /* O_DIRECT */
}
#endif
return MDBX_SUCCESS;
}