ISAR/libmdbx
3
0
Fork 0
mirror of https://github.com/isar/libmdbx.git synced 2025-01-04 17:14:12 +08:00
Code Issues Packages Projects Releases Wiki Activity

mdbx: more checks for meta-params.

Browse Source
This commit is contained in:
Leo Yuriev 2017-05-25 14:07:58 +03:00
parent 9eeb00f448
commit 700f3e9c2a
1 changed files with 16 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
src/mdbx.c
View File

@ -3798,6 +3798,8 @@ static int __cold mdbx_setup_dxb(MDBX_env *env, int lck_rc) {
if (env->me_psize > MAX_PAGESIZE)
env->me_psize = MAX_PAGESIZE;
assert(is_power2(env->me_psize));
assert(env->me_psize >= MIN_PAGESIZE);
env->me_mapsize = roundup2(
env->me_mapsize ? env->me_mapsize : DEFAULT_MAPSIZE, env->me_os_psize);
@ -3822,6 +3824,11 @@ static int __cold mdbx_setup_dxb(MDBX_env *env, int lck_rc) {
return err;
} else {
env->me_psize = meta.mm_psize;
if (!is_power2(env->me_psize) || env->me_psize < MIN_PAGESIZE) {
mdbx_error("wrong pagesize %u (system %u)", env->me_psize,
env->me_os_psize);
return MDBX_WANNA_RECOVERY;
}
/* Make sure mapsize >= committed data size. Even when using
* mm_mapsize, which could be broken in old files (ITS#7789). */
@ -3846,8 +3853,10 @@ static int __cold mdbx_setup_dxb(MDBX_env *env, int lck_rc) {
mdbx_notice("filesize mismatch (wanna %" PRIu64 ", have %" PRIu64 ")",
env->me_mapsize, size);
if ((env->me_flags & MDBX_RDONLY) ||
lck_rc != /* lck exclusive */ MDBX_RESULT_TRUE)
lck_rc != /* lck exclusive */ MDBX_RESULT_TRUE) {
mdbx_error("exclusive, but read-only, unable ftruncate/set-size");
return MDBX_WANNA_RECOVERY /* LY: could not mdbx_ftruncate */;
}
err = mdbx_ftruncate(env->me_fd, env->me_mapsize);
if (unlikely(err != MDBX_SUCCESS))
@ -3887,12 +3896,12 @@ static int __cold mdbx_setup_dxb(MDBX_env *env, int lck_rc) {
} else if (!env->me_lck) {
/* LY: without-lck (read-only) mode, so it is imposible that other
* process made weak checkpoint. */
mdbx_trace("without-lck, unable recovery/rollback");
mdbx_error("without-lck, unable recovery/rollback");
return MDBX_WANNA_RECOVERY;
} else {
/* LY: assume just have a collision with other running process,
* or someone make a weak checkpoint */
mdbx_trace("assume collision or online weak checkpoint");
mdbx_info("assume collision or online weak checkpoint");
}
}
@ -3973,7 +3982,7 @@ static int __cold mdbx_setup_lck(MDBX_env *env, char *lck_pathname, int mode) {
const uint64_t maxreaders =
(size - sizeof(MDBX_lockinfo)) / sizeof(MDBX_reader) + 1;
if (maxreaders > UINT16_MAX) {
mdbx_notice("lck-size too big (up to %" PRIu64 " readers)", maxreaders);
mdbx_error("lck-size too big (up to %" PRIu64 " readers)", maxreaders);
return MDBX_PROBLEM;
}
env->me_maxreaders = (unsigned)maxreaders;
@ -4019,11 +4028,11 @@ static int __cold mdbx_setup_lck(MDBX_env *env, char *lck_pathname, int mode) {
env->me_lck->mti_format = MDBX_LOCK_FORMAT;
} else {
if (env->me_lck->mti_magic != MDBX_MAGIC) {
mdbx_debug("lock region has invalid magic");
mdbx_error("lock region has invalid magic");
return MDBX_INVALID;
}
if (env->me_lck->mti_format != MDBX_LOCK_FORMAT) {
mdbx_debug("lock region has format+version 0x%" PRIx64
mdbx_error("lock region has format+version 0x%" PRIx64
", expected 0x%" PRIx64,
env->me_lck->mti_format, MDBX_LOCK_FORMAT);
return MDBX_VERSION_MISMATCH;
@ -4148,7 +4157,7 @@ int __cold mdbx_env_open_ex(MDBX_env *env, const char *path, unsigned flags,
*exclusive = 0;
}
if ((env->me_lck->mti_envmode ^ env->me_flags) & mode_flags) {
/* LY: Current mode/flags incompatible with requested. */
mdbx_error("current mode/flags incompatible with requested");
rc = MDBX_INCOMPATIBLE;
goto bailout;
}