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mdbx: disallow begin txn if env not yet opened.

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This commit is contained in:
Leo Yuriev 2017-06-06 18:28:04 +03:00
parent fbce45cb98
commit 204904df7c
2 changed files with 5 additions and 0 deletions
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2
mdbx.h
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@ -79,6 +79,7 @@ typedef DWORD mdbx_tid_t;
#define MDBX_EROFS ERROR_FILE_READ_ONLY #define MDBX_EROFS ERROR_FILE_READ_ONLY
#define MDBX_ENOSYS ERROR_NOT_SUPPORTED #define MDBX_ENOSYS ERROR_NOT_SUPPORTED
#define MDBX_EIO ERROR_WRITE_FAULT #define MDBX_EIO ERROR_WRITE_FAULT
#define MDBX_EPERM ERROR_INVALID_FUNCTION
#else #else
@ -97,6 +98,7 @@ typedef pthread_t mdbx_tid_t;
#define MDBX_EROFS EROFS #define MDBX_EROFS EROFS
#define MDBX_ENOSYS ENOSYS #define MDBX_ENOSYS ENOSYS
#define MDBX_EIO EIO #define MDBX_EIO EIO
#define MDBX_EPERM EPERM
#endif #endif
#ifdef _MSC_VER #ifdef _MSC_VER

3
src/mdbx.c
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@ -2434,6 +2434,9 @@ int mdbx_txn_begin(MDBX_env *env, MDBX_txn *parent, unsigned flags,
return MDBX_PANIC; return MDBX_PANIC;
} }
if (unlikely(!env->me_map))
return MDBX_EPERM;
flags &= MDBX_TXN_BEGIN_FLAGS; flags &= MDBX_TXN_BEGIN_FLAGS;
flags |= env->me_flags & MDBX_WRITEMAP; flags |= env->me_flags & MDBX_WRITEMAP;