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112 lines
2.3 KiB
C
112 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) 1997-2005
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* Sleepycat Software. All rights reserved.
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*
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* $Id: os_stat.c,v 12.1 2005/06/16 20:23:26 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 <sys/stat.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_exists --
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* Return if the file exists.
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*
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* PUBLIC: int __os_exists __P((const char *, int *));
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*/
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int
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__os_exists(path, isdirp)
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const char *path;
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int *isdirp;
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{
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struct stat sb;
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int ret;
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if (DB_GLOBAL(j_exists) != NULL)
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return (DB_GLOBAL(j_exists)(path, isdirp));
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#ifdef HAVE_VXWORKS
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RETRY_CHK((stat((char *)path, &sb)), ret);
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#else
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RETRY_CHK((stat(path, &sb)), ret);
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#endif
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if (ret != 0)
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return (ret);
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#if !defined(S_ISDIR) || defined(STAT_MACROS_BROKEN)
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#undef S_ISDIR
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#ifdef _S_IFDIR
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#define S_ISDIR(m) (_S_IFDIR & (m))
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#else
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#define S_ISDIR(m) (((m) & 0170000) == 0040000)
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#endif
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#endif
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if (isdirp != NULL)
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*isdirp = S_ISDIR(sb.st_mode);
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return (0);
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}
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/*
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* __os_ioinfo --
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* Return file size and I/O size; abstracted to make it easier
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* to replace.
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*
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* PUBLIC: int __os_ioinfo __P((DB_ENV *, const char *,
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* PUBLIC: DB_FH *, u_int32_t *, u_int32_t *, u_int32_t *));
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*/
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int
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__os_ioinfo(dbenv, path, fhp, mbytesp, bytesp, iosizep)
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DB_ENV *dbenv;
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const char *path;
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DB_FH *fhp;
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u_int32_t *mbytesp, *bytesp, *iosizep;
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{
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struct stat sb;
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int ret;
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if (DB_GLOBAL(j_ioinfo) != NULL)
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return (DB_GLOBAL(j_ioinfo)(path,
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fhp->fd, mbytesp, bytesp, iosizep));
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/* Check for illegal usage. */
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DB_ASSERT(F_ISSET(fhp, DB_FH_OPENED) && fhp->fd != -1);
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RETRY_CHK((fstat(fhp->fd, &sb)), ret);
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if (ret != 0) {
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__db_err(dbenv, "fstat: %s", strerror(ret));
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return (ret);
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}
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/* Return the size of the file. */
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if (mbytesp != NULL)
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*mbytesp = (u_int32_t)(sb.st_size / MEGABYTE);
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if (bytesp != NULL)
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*bytesp = (u_int32_t)(sb.st_size % MEGABYTE);
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/*
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* Return the underlying filesystem blocksize, if available.
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*
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* XXX
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* Check for a 0 size -- the HP MPE/iX architecture has st_blksize,
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* but it's always 0.
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*/
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#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
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if (iosizep != NULL && (*iosizep = sb.st_blksize) == 0)
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*iosizep = DB_DEF_IOSIZE;
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#else
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if (iosizep != NULL)
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*iosizep = DB_DEF_IOSIZE;
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#endif
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return (0);
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}
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