os_tmpdir.c
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:3k
- /*-
- * See the file LICENSE for redistribution information.
- *
- * Copyright (c) 1998-2002
- * Sleepycat Software. All rights reserved.
- */
- #include "db_config.h"
- #ifndef lint
- static const char revid[] = "$Id: os_tmpdir.c,v 11.19 2002/01/11 15:53:02 bostic Exp $";
- #endif /* not lint */
- #ifndef NO_SYSTEM_INCLUDES
- #include <sys/types.h>
- #include <stdlib.h>
- #endif
- #include "db_int.h"
- #ifdef macintosh
- #include <TFileSpec.h>
- #endif
- /*
- * __os_tmpdir --
- * Set the temporary directory path.
- *
- * The order of items in the list structure and the order of checks in
- * the environment are documented.
- *
- * PUBLIC: int __os_tmpdir __P((DB_ENV *, u_int32_t));
- */
- int
- __os_tmpdir(dbenv, flags)
- DB_ENV *dbenv;
- u_int32_t flags;
- {
- int isdir;
- /*
- * !!!
- * Don't change this to:
- *
- * static const char * const list[]
- *
- * because it creates a text relocation in position independent code.
- */
- static const char * list[] = {
- "/var/tmp",
- "/usr/tmp",
- "/temp", /* Windows. */
- "/tmp",
- "C:/temp", /* Windows. */
- "C:/tmp", /* Windows. */
- NULL
- };
- const char * const *lp, *p;
- /* Use the environment if it's permitted and initialized. */
- if (LF_ISSET(DB_USE_ENVIRON) ||
- (LF_ISSET(DB_USE_ENVIRON_ROOT) && __os_isroot())) {
- if ((p = getenv("TMPDIR")) != NULL && p[0] == ' ') {
- __db_err(dbenv, "illegal TMPDIR environment variable");
- return (EINVAL);
- }
- /* Windows */
- if (p == NULL && (p = getenv("TEMP")) != NULL && p[0] == ' ') {
- __db_err(dbenv, "illegal TEMP environment variable");
- return (EINVAL);
- }
- /* Windows */
- if (p == NULL && (p = getenv("TMP")) != NULL && p[0] == ' ') {
- __db_err(dbenv, "illegal TMP environment variable");
- return (EINVAL);
- }
- /* Macintosh */
- if (p == NULL &&
- (p = getenv("TempFolder")) != NULL && p[0] == ' ') {
- __db_err(dbenv,
- "illegal TempFolder environment variable");
- return (EINVAL);
- }
- if (p != NULL)
- return (__os_strdup(dbenv, p, &dbenv->db_tmp_dir));
- }
- #ifdef macintosh
- /* Get the path to the temporary folder. */
- {FSSpec spec;
- if (!Special2FSSpec(kTemporaryFolderType,
- kOnSystemDisk, 0, &spec))
- return (__os_strdup(dbenv,
- FSp2FullPath(&spec), &dbenv->db_tmp_dir));
- }
- #endif
- #ifdef DB_WIN32
- /* Get the path to the temporary directory. */
- {int len;
- char *eos, temp[MAXPATHLEN + 1];
- if ((len = GetTempPath(sizeof(temp) - 1, temp)) > 2) {
- eos = &temp[len];
- *eos-- = ' ';
- if (*eos == '\' || *eos == '/')
- *eos = ' ';
- if (__os_exists(temp, &isdir) == 0 && isdir != 0)
- return (__os_strdup(dbenv,
- temp, &dbenv->db_tmp_dir));
- }
- }
- #endif
- /* Step through the static list looking for a possibility. */
- for (lp = list; *lp != NULL; ++lp)
- if (__os_exists(*lp, &isdir) == 0 && isdir != 0)
- return (__os_strdup(dbenv, *lp, &dbenv->db_tmp_dir));
- return (0);
- }