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mdbx: refine handling EACCESS while trying create LCK-file on a read-only filesystem.

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This commit is contained in:
Леонид Юрьев (Leonid Yuriev)
2022-06-04 02:04:55 +03:00
parent a4da10bc62
commit d1e67645a2
2 changed files with 39 additions and 14 deletions
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30
src/core.c
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@@ -12440,17 +12440,29 @@ __cold static int mdbx_setup_lck(MDBX_env *env, char *lck_pathname,
int err = mdbx_openfile(MDBX_OPEN_LCK, env, lck_pathname, &env->me_lfd, mode);
if (err != MDBX_SUCCESS) {
if (!(err == MDBX_ENOFILE && (env->me_flags & MDBX_EXCLUSIVE)) &&
!((err == MDBX_EROFS || err == MDBX_EACCESS || err == MDBX_EPERM) &&
(env->me_flags & MDBX_RDONLY)))
switch (err) {
default:
return err;
case MDBX_ENOFILE:
case MDBX_EACCESS:
case MDBX_EPERM:
if (!F_ISSET(env->me_flags, MDBX_RDONLY | MDBX_EXCLUSIVE))
return err;
break;
case MDBX_EROFS:
if ((env->me_flags & MDBX_RDONLY) == 0)
return err;
break;
}
/* ensure the file system is read-only */
err = mdbx_check_fs_rdonly(env->me_lazy_fd, lck_pathname, err);
if (err != MDBX_SUCCESS &&
/* ignore ERROR_NOT_SUPPORTED for exclusive mode */
!(err == MDBX_ENOSYS && (env->me_flags & MDBX_EXCLUSIVE)))
return err;
if (err != MDBX_ENOFILE) {
/* ensure the file system is read-only */
err = mdbx_check_fs_rdonly(env->me_lazy_fd, lck_pathname, err);
if (err != MDBX_SUCCESS &&
/* ignore ERROR_NOT_SUPPORTED for exclusive mode */
!(err == MDBX_ENOSYS && (env->me_flags & MDBX_EXCLUSIVE)))
return err;
}
/* LY: without-lck mode (e.g. exclusive or on read-only filesystem) */
/* beginning of a locked section ---------------------------------------- */