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Allocating sparse files on windows.

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clemahieu 2015-03-15 20:45:15 -05:00
commit c2520dab54
1 changed files with 4 additions and 0 deletions
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liblmdb/mdb.c
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@ -4682,6 +4682,10 @@ mdb_env_open(MDB_env *env, const char *path, unsigned int flags, mdb_mode_t mode
mode = FILE_ATTRIBUTE_NORMAL;
env->me_fd = CreateFile(dpath, oflags, FILE_SHARE_READ|FILE_SHARE_WRITE,
NULL, len, mode, NULL);
DWORD actual;
if (!DeviceIoControl(env->me_fd, FSCTL_SET_SPARSE, NULL, 0,
NULL, 0, &actual, NULL))
; // If the file is not sparsed, it will allocate the full environment
#else
if (F_ISSET(flags, MDB_RDONLY))
oflags = O_RDONLY;