75 lines
2.6 KiB
C
75 lines
2.6 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 "gtm_stdio.h"
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#include "gtm_unistd.h"
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#include "gtm_string.h"
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#include "gtm_limits.h"
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#include <errno.h>
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#include "setzdir.h"
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UNSUPPORTED_PLATFORM_CHECK
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static char directory_buffer[GTM_MAX_DIR_LEN];
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void setzdir(mval *newdir, mval *full_path_of_newdir)
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{ /* newdir is the directory to change to; NULL to set full_path_of_newdir to current working directory.
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* If full_path_of_newdir is non NULL, return the full path of the new directory in full_path_of_newdir.
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* NOTE : the full path of directory is stored in a static buffer which might get overwritten by the next call to setzdir.
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* Callers should save return value if needed. */
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char directory[GTM_MAX_DIR_LEN], *getcwd_res, *err_str;
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uint4 length, status;
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error_def(ERR_SETZDIR);
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error_def(ERR_SYSCALL);
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error_def(ERR_TEXT);
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assert(NULL != newdir || NULL != full_path_of_newdir);
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if (NULL != newdir)
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{
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MV_FORCE_STR(newdir);
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assert(SIZEOF(directory) > newdir->str.len);
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memcpy(directory, newdir->str.addr, newdir->str.len);
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directory[newdir->str.len] = '\0';
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if (-1 == CHDIR(directory))
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{ /* On VMS, chdir(directory, 0) [actually, any non 1 value] is supposed to restore the process startup cwd at exit
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* (see help cc run). We've noticed that it doesn't behave the way it has been documented in the mumps executable.
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* Vinaya, 08/22/2001 */
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err_str = STRERROR(errno);
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rts_error(VARLSTCNT(8) ERR_SETZDIR, 2, newdir->str.len, newdir->str.addr, ERR_TEXT, 2,
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LEN_AND_STR(err_str));
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}
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}
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/* We need to find the full path of the current working directory because newdir might be a relative path, in which case
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* $ZDIR will show up as a relative path */
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if (NULL != full_path_of_newdir)
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{
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if (NULL != GETCWD(directory_buffer, SIZEOF(directory_buffer), getcwd_res))
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{
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length = USTRLEN(directory_buffer);
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UNIX_ONLY(directory_buffer[length++] = '/';)
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} else
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{
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err_str = STRERROR(errno);
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rts_error(VARLSTCNT(11) ERR_SYSCALL, 5, LEN_AND_LIT("getcwd"), CALLFROM, ERR_TEXT, 2,
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LEN_AND_STR(err_str));
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}
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full_path_of_newdir->mvtype = MV_STR;
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full_path_of_newdir->str.addr = directory_buffer;
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full_path_of_newdir->str.len = length;
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}
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return;
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}
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