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| author | Howard Chu <hyc@openldap.org> | 2016-02-21 18:29:40 +0000 |
|---|---|---|
| committer | Howard Chu <hyc@symas.com> | 2022-06-03 16:45:39 +0100 |
| commit | 747f5d3594566e4a9f56595cfd0feef7004e3485 (patch) | |
| tree | e9a0ea774ba150b9b292a8861b60c7829a5de264 /external/db_drivers/liblmdb/mdb.c | |
| parent | Merge pull request #8315 (diff) | |
| download | monero-747f5d3594566e4a9f56595cfd0feef7004e3485.tar.xz | |
Preliminary raw partition support
Autodetects that a block device is being used.
Diffstat (limited to '')
| -rw-r--r-- | external/db_drivers/liblmdb/mdb.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/external/db_drivers/liblmdb/mdb.c b/external/db_drivers/liblmdb/mdb.c index 6314d5775..0d01d2959 100644 --- a/external/db_drivers/liblmdb/mdb.c +++ b/external/db_drivers/liblmdb/mdb.c @@ -1473,6 +1473,8 @@ struct MDB_env { #define MDB_ENV_TXKEY 0x10000000U /** fdatasync is unreliable */ #define MDB_FSYNCONLY 0x08000000U + /** using a raw block device */ +#define MDB_RAWPART 0x04000000U uint32_t me_flags; /**< @ref mdb_env */ unsigned int me_psize; /**< DB page size, inited from me_os_psize */ unsigned int me_os_psize; /**< OS page size, from #GET_PAGESIZE */ @@ -4081,6 +4083,8 @@ mdb_env_read_header(MDB_env *env, int prev, MDB_meta *meta) p = (MDB_page *)&pbuf; if (!F_ISSET(p->mp_flags, P_META)) { + if (env->me_flags & MDB_RAWPART) + return ENOENT; DPRINTF(("page %"Yu" not a meta page", p->mp_pgno)); return MDB_INVALID; } @@ -4410,7 +4414,7 @@ mdb_env_map(MDB_env *env, void *addr) int prot = PROT_READ; if (flags & MDB_WRITEMAP) { prot |= PROT_WRITE; - if (ftruncate(env->me_fd, env->me_mapsize) < 0) + if (!(flags & MDB_RAWPART) && ftruncate(env->me_fd, env->me_mapsize) < 0) return ErrCode(); } env->me_map = mmap(addr, env->me_mapsize, prot, MAP_SHARED, @@ -5449,6 +5453,17 @@ mdb_env_open(MDB_env *env, const char *path, unsigned int flags, mdb_mode_t mode goto leave; #endif #endif +#ifndef _WIN32 + { + struct stat st; + rc = stat(path, &st); + if (rc) + return ErrCode(); + flags &= ~MDB_RAWPART; + if (S_ISBLK(st.st_mode)) + flags |= MDB_RAWPART | MDB_NOSUBDIR; + } +#endif flags |= MDB_ENV_ACTIVE; /* tell mdb_env_close0() to clean up */ if (flags & MDB_RDONLY) { |