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96 lines
2.1 KiB
C
96 lines
2.1 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1997-2005
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* Sleepycat Software. All rights reserved.
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*
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* $Id: os_unlink.c,v 12.3 2005/08/10 15:47:27 bostic Exp $
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*/
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#include "db_config.h"
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#ifndef NO_SYSTEM_INCLUDES
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#include <sys/types.h>
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#include <string.h>
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#endif
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#include "db_int.h"
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/*
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* __os_region_unlink --
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* Remove a shared memory object file.
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*
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* PUBLIC: int __os_region_unlink __P((DB_ENV *, const char *));
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*/
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int
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__os_region_unlink(dbenv, path)
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DB_ENV *dbenv;
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const char *path;
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{
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#ifdef HAVE_QNX
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int ret;
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char *newname;
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if ((ret = __os_shmname(dbenv, path, &newname)) != 0)
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goto err;
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if ((ret = shm_unlink(newname)) != 0) {
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ret = __os_get_errno();
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if (ret != ENOENT)
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__db_err(dbenv, "shm_unlink: %s: %s",
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newname, strerror(ret));
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}
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err:
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if (newname != NULL)
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__os_free(dbenv, newname);
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return (ret);
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#else
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if (F_ISSET(dbenv, DB_ENV_OVERWRITE))
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(void)__db_file_multi_write(dbenv, path);
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return (__os_unlink(dbenv, path));
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#endif
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}
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/*
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* __os_unlink --
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* Remove a file.
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*
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* PUBLIC: int __os_unlink __P((DB_ENV *, const char *));
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*/
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int
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__os_unlink(dbenv, path)
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DB_ENV *dbenv;
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const char *path;
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{
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int ret;
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if (DB_GLOBAL(j_unlink) != NULL)
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ret = DB_GLOBAL(j_unlink)(path);
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else
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#ifdef HAVE_VXWORKS
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RETRY_CHK((unlink((char *)path)), ret);
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#else
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RETRY_CHK((unlink(path)), ret);
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#endif
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/*
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* !!!
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* The results of unlink are file system driver specific on VxWorks.
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* In the case of removing a file that did not exist, some, at least,
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* return an error, but with an errno of 0, not ENOENT. We do not
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* have to test for the explicitly, the RETRY_CHK macro resets "ret"
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* to be the errno, and so we'll just slide right on through.
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*
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* XXX
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* We shouldn't be testing for an errno of ENOENT here, but ENOENT
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* signals that a file is missing, and we attempt to unlink things
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* (such as v. 2.x environment regions, in DB_ENV->remove) that we
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* are expecting not to be there. Reporting errors in these cases
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* is annoying.
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*/
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if (ret != 0 && ret != ENOENT)
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__db_err(dbenv, "unlink: %s: %s", path, strerror(ret));
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return (ret);
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}
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