/* * Copyright (c) 2019 TAOS Data, Inc. * * This program is free software: you can use, redistribute, and/or modify * it under the terms of the GNU Affero General Public License, version 3 * or later ("AGPL"), as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see . */ #include "tdbInt.h" int tdbGnrtFileID(const char *fname, uint8_t *fileid, bool unique) { struct stat statbuf; if (stat(fname, &statbuf) < 0) { return -1; } memset(fileid, 0, TDB_FILE_ID_LEN); ((uint64_t *)fileid)[0] = (uint64_t)statbuf.st_ino; ((uint64_t *)fileid)[1] = (uint64_t)statbuf.st_dev; if (unique) { ((uint64_t *)fileid)[2] = rand(); } return 0; } int tdbCheckFileAccess(const char *pathname, int mode) { int flags = 0; if (mode & TDB_F_OK) { flags |= F_OK; } if (mode & TDB_R_OK) { flags |= R_OK; } if (mode & TDB_W_OK) { flags |= W_OK; } return access(pathname, flags); } int tdbGetFileSize(const char *fname, int pgSize, SPgno *pSize) { struct stat st; int ret; ret = stat(fname, &st); if (ret != 0) { return -1; } ASSERT(st.st_size % pgSize == 0); *pSize = st.st_size / pgSize; return 0; }