os_dir.c
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:2k
- /*-
- * See the file LICENSE for redistribution information.
- *
- * Copyright (c) 1997-2002
- * Sleepycat Software. All rights reserved.
- */
- #include "db_config.h"
- #ifndef lint
- static const char revid[] = "$Id: os_dir.c,v 11.14 2002/07/12 18:56:50 bostic Exp $";
- #endif /* not lint */
- #ifndef NO_SYSTEM_INCLUDES
- #include <sys/types.h>
- #if HAVE_DIRENT_H
- # include <dirent.h>
- # define NAMLEN(dirent) strlen((dirent)->d_name)
- #else
- # define dirent direct
- # define NAMLEN(dirent) (dirent)->d_namlen
- # if HAVE_SYS_NDIR_H
- # include <sys/ndir.h>
- # endif
- # if HAVE_SYS_DIR_H
- # include <sys/dir.h>
- # endif
- # if HAVE_NDIR_H
- # include <ndir.h>
- # endif
- #endif
- #endif
- #include "db_int.h"
- /*
- * __os_dirlist --
- * Return a list of the files in a directory.
- *
- * PUBLIC: int __os_dirlist __P((DB_ENV *, const char *, char ***, int *));
- */
- int
- __os_dirlist(dbenv, dir, namesp, cntp)
- DB_ENV *dbenv;
- const char *dir;
- char ***namesp;
- int *cntp;
- {
- struct dirent *dp;
- DIR *dirp;
- int arraysz, cnt, ret;
- char **names;
- if (DB_GLOBAL(j_dirlist) != NULL)
- return (DB_GLOBAL(j_dirlist)(dir, namesp, cntp));
- #ifdef HAVE_VXWORKS
- if ((dirp = opendir((char *)dir)) == NULL)
- #else
- if ((dirp = opendir(dir)) == NULL)
- #endif
- return (__os_get_errno());
- names = NULL;
- for (arraysz = cnt = 0; (dp = readdir(dirp)) != NULL; ++cnt) {
- if (cnt >= arraysz) {
- arraysz += 100;
- if ((ret = __os_realloc(dbenv,
- arraysz * sizeof(names[0]), &names)) != 0)
- goto nomem;
- }
- if ((ret = __os_strdup(dbenv, dp->d_name, &names[cnt])) != 0)
- goto nomem;
- }
- (void)closedir(dirp);
- *namesp = names;
- *cntp = cnt;
- return (0);
- nomem: if (names != NULL)
- __os_dirfree(dbenv, names, cnt);
- if (dirp != NULL)
- (void)closedir(dirp);
- return (ret);
- }
- /*
- * __os_dirfree --
- * Free the list of files.
- *
- * PUBLIC: void __os_dirfree __P((DB_ENV *, char **, int));
- */
- void
- __os_dirfree(dbenv, names, cnt)
- DB_ENV *dbenv;
- char **names;
- int cnt;
- {
- if (DB_GLOBAL(j_dirfree) != NULL)
- DB_GLOBAL(j_dirfree)(names, cnt);
- else {
- while (cnt > 0)
- __os_free(dbenv, names[--cnt]);
- __os_free(dbenv, names);
- }
- }