80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
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/****************************************************************
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* *
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* Copyright 2001, 2009 Fidelity Information Services, Inc *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#include "mdef.h"
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#include <errno.h>
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#include "gtm_unistd.h"
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#include "gtm_fcntl.h"
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#include "gdsroot.h"
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#include "gtm_facility.h"
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#include "fileinfo.h"
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#include "gdsbt.h"
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#include "gdsfhead.h"
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#include "filestruct.h"
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#include "gtm_stdio.h"
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#include "gtm_stdlib.h"
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#include "gtm_string.h"
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#include "gtmio.h"
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#include "iosp.h"
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#include "eintr_wrappers.h"
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#include "file_head_write.h"
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#include "gtmmsg.h"
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#ifdef __MVS__
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#include "gtm_zos_io.h"
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#endif
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/*
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* This is a plain way to write file header to database.
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* User needs to take care of concurrency issue etc.
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* Parameters :
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* fn : full name of a database file.
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* header: Pointer to database file header structure (may not be in shared memory)
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* len: length of header to write (should be either SGMNT_HDR_LEN or SIZEOF_FILE_HDR(header))
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*/
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boolean_t file_head_write(char *fn, sgmnt_data_ptr_t header, int4 len)
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{
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int save_errno, fd, header_size;
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ZOS_ONLY(int realfiletag;)
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error_def(ERR_DBFILOPERR);
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error_def(ERR_DBNOTGDS);
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error_def(ERR_TEXT);
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ZOS_ONLY(error_def(ERR_BADTAG);)
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header_size = (int)SIZEOF_FILE_HDR(header);
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assert(SGMNT_HDR_LEN == len || header_size == len);
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OPENFILE(fn, O_RDWR, fd);
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if (FD_INVALID == fd)
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{
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save_errno = errno;
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gtm_putmsg(VARLSTCNT(5) ERR_DBFILOPERR, 2, LEN_AND_STR(fn), save_errno);
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return FALSE;
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}
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#ifdef __MVS__
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if (-1 == gtm_zos_tag_to_policy(fd, TAG_BINARY, &realfiletag))
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TAG_POLICY_GTM_PUTMSG(fn, errno, realfiletag, TAG_BINARY);
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#endif
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LSEEKWRITE(fd, 0, header, len, save_errno);
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if (0 != save_errno)
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{
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gtm_putmsg(VARLSTCNT(5) ERR_DBFILOPERR, 2, LEN_AND_STR(fn), save_errno);
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return FALSE;
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}
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CLOSEFILE_RESET(fd, save_errno); /* resets "fd" to FD_INVALID */
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if (0 != save_errno)
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{
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gtm_putmsg(VARLSTCNT(5) ERR_DBFILOPERR, 2, LEN_AND_STR(fn), save_errno);
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return FALSE;
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}
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return TRUE;
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}
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