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109 lines
2.3 KiB
C
109 lines
2.3 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1997-2002
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* Sleepycat Software. All rights reserved.
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*/
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#include "db_config.h"
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#ifndef lint
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static const char revid[] = "$Id: os_unlink.c,v 11.24 2002/07/12 18:56:53 bostic Exp $";
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#endif /* not lint */
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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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#include <unistd.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_overwrite(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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retry: ret = DB_GLOBAL(j_unlink) != NULL ?
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DB_GLOBAL(j_unlink)(path) :
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#ifdef HAVE_VXWORKS
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unlink((char *)path);
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#else
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unlink(path);
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#endif
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if (ret == -1) {
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if ((ret = __os_get_errno()) == EINTR)
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goto retry;
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/*
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* XXX
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* We really shouldn't be looking at this value ourselves,
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* but ENOENT usually signals that a file is missing, and
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* we attempt to unlink things (such as v. 2.x environment
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* regions, in DB_ENV->remove) that we're expecting not to
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* be there. Reporting errors in these cases is annoying.
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*/
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#ifdef HAVE_VXWORKS
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/*
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* XXX
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* The results of unlink are file system driver specific
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* on VxWorks. In the case of removing a file that did
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* not exist, some, at least, return an error, but with
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* an errno of 0, not ENOENT.
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*
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* Code below falls through to original if-statement only
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* we didn't get a "successful" error.
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*/
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if (ret != 0)
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/* FALLTHROUGH */
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#endif
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if (ret != ENOENT)
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__db_err(dbenv, "unlink: %s: %s", path, strerror(ret));
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}
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return (ret);
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}
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