-/* $LP: LPlib/source/LPdir_vms.c,v 1.20 2004/08/26 13:36:05 _cvs_levitte Exp $ */
/*
* Copyright (c) 2004, Richard Levitte <richard@levitte.org>
* All rights reserved.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
- *
+ *
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
#include <str$routines.h>
#include <stsdef.h>
#ifndef LPDIR_H
-#include "LPdir.h"
+# include "LPdir.h"
#endif
+#include "vms_rms.h"
-/* Because some compiler options hide this macor */
+/* Some compiler options hide EVMSERR. */
#ifndef EVMSERR
-#define EVMSERR 65535 /* error for non-translatable VMS errors */
+# define EVMSERR 65535 /* error for non-translatable VMS errors */
#endif
-struct LP_dir_context_st
-{
- unsigned long VMS_context;
-#ifdef NAML$C_MAXRSS
- char filespec[NAML$C_MAXRSS+1];
- char result[NAML$C_MAXRSS+1];
-#else
- char filespec[256];
- char result[256];
-#endif
- struct dsc$descriptor_d filespec_dsc;
- struct dsc$descriptor_d result_dsc;
+struct LP_dir_context_st {
+ unsigned long VMS_context;
+ char filespec[NAMX_MAXRSS + 1];
+ char result[NAMX_MAXRSS + 1];
+ struct dsc$descriptor_d filespec_dsc;
+ struct dsc$descriptor_d result_dsc;
};
const char *LP_find_file(LP_DIR_CTX **ctx, const char *directory)
{
- int status;
- char *p, *r;
- size_t l;
- unsigned long flags = 0;
+ int status;
+ char *p, *r;
+ size_t l;
+ unsigned long flags = 0;
+
+/* Arrange 32-bit pointer to (copied) string storage, if needed. */
+#if __INITIAL_POINTER_SIZE == 64
+# pragma pointer_size save
+# pragma pointer_size 32
+ char *ctx_filespec_32p;
+# pragma pointer_size restore
+ char ctx_filespec_32[NAMX_MAXRSS + 1];
+#endif /* __INITIAL_POINTER_SIZE == 64 */
+
#ifdef NAML$C_MAXRSS
- flags |= LIB$M_FIL_LONG_NAMES;
+ flags |= LIB$M_FIL_LONG_NAMES;
#endif
- if (ctx == NULL || directory == NULL)
- {
- errno = EINVAL;
- return 0;
+ if (ctx == NULL || directory == NULL) {
+ errno = EINVAL;
+ return 0;
}
- errno = 0;
- if (*ctx == NULL)
- {
- size_t filespeclen = strlen(directory);
- char *filespec = NULL;
-
- /* MUST be a VMS directory specification! Let's estimate if it is. */
- if (directory[filespeclen-1] != ']'
- && directory[filespeclen-1] != '>'
- && directory[filespeclen-1] != ':')
- {
- errno = EINVAL;
- return 0;
- }
-
- filespeclen += 4; /* "*.*;" */
-
- if (filespeclen >
-#ifdef NAML$C_MAXRSS
- NAML$C_MAXRSS
-#else
- 255
-#endif
- )
- {
- errno = ENAMETOOLONG;
- return 0;
- }
-
- *ctx = (LP_DIR_CTX *)malloc(sizeof(LP_DIR_CTX));
- if (*ctx == NULL)
- {
- errno = ENOMEM;
- return 0;
- }
- memset(*ctx, '\0', sizeof(LP_DIR_CTX));
-
- strcpy((*ctx)->filespec,directory);
- strcat((*ctx)->filespec,"*.*;");
- (*ctx)->filespec_dsc.dsc$w_length = filespeclen;
- (*ctx)->filespec_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
- (*ctx)->filespec_dsc.dsc$b_class = DSC$K_CLASS_S;
- (*ctx)->filespec_dsc.dsc$a_pointer = (*ctx)->filespec;
- (*ctx)->result_dsc.dsc$w_length = 0;
- (*ctx)->result_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
- (*ctx)->result_dsc.dsc$b_class = DSC$K_CLASS_D;
- (*ctx)->result_dsc.dsc$a_pointer = 0;
+ errno = 0;
+ if (*ctx == NULL) {
+ size_t filespeclen = strlen(directory);
+ char *filespec = NULL;
+
+ if (filespeclen == 0) {
+ errno = ENOENT;
+ return 0;
+ }
+
+ /* MUST be a VMS directory specification! Let's estimate if it is. */
+ if (directory[filespeclen - 1] != ']'
+ && directory[filespeclen - 1] != '>'
+ && directory[filespeclen - 1] != ':') {
+ errno = EINVAL;
+ return 0;
+ }
+
+ filespeclen += 4; /* "*.*;" */
+
+ if (filespeclen > NAMX_MAXRSS) {
+ errno = ENAMETOOLONG;
+ return 0;
+ }
+
+ *ctx = malloc(sizeof(**ctx));
+ if (*ctx == NULL) {
+ errno = ENOMEM;
+ return 0;
+ }
+ memset(*ctx, 0, sizeof(**ctx));
+
+ strcpy((*ctx)->filespec, directory);
+ strcat((*ctx)->filespec, "*.*;");
+
+/* Arrange 32-bit pointer to (copied) string storage, if needed. */
+#if __INITIAL_POINTER_SIZE == 64
+# define CTX_FILESPEC ctx_filespec_32p
+ /* Copy the file name to storage with a 32-bit pointer. */
+ ctx_filespec_32p = ctx_filespec_32;
+ strcpy(ctx_filespec_32p, (*ctx)->filespec);
+#else /* __INITIAL_POINTER_SIZE == 64 */
+# define CTX_FILESPEC (*ctx)->filespec
+#endif /* __INITIAL_POINTER_SIZE == 64 [else] */
+
+ (*ctx)->filespec_dsc.dsc$w_length = filespeclen;
+ (*ctx)->filespec_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
+ (*ctx)->filespec_dsc.dsc$b_class = DSC$K_CLASS_S;
+ (*ctx)->filespec_dsc.dsc$a_pointer = CTX_FILESPEC;
}
- (*ctx)->result_dsc.dsc$w_length = 0;
- (*ctx)->result_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
- (*ctx)->result_dsc.dsc$b_class = DSC$K_CLASS_D;
- (*ctx)->result_dsc.dsc$a_pointer = 0;
+ (*ctx)->result_dsc.dsc$w_length = 0;
+ (*ctx)->result_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
+ (*ctx)->result_dsc.dsc$b_class = DSC$K_CLASS_D;
+ (*ctx)->result_dsc.dsc$a_pointer = 0;
- status = lib$find_file(&(*ctx)->filespec_dsc, &(*ctx)->result_dsc,
- &(*ctx)->VMS_context, 0, 0, 0, &flags);
+ status = lib$find_file(&(*ctx)->filespec_dsc, &(*ctx)->result_dsc,
+ &(*ctx)->VMS_context, 0, 0, 0, &flags);
- if (status == RMS$_NMF)
- {
- errno = 0;
- vaxc$errno = status;
- return NULL;
+ if (status == RMS$_NMF) {
+ errno = 0;
+ vaxc$errno = status;
+ return NULL;
}
- if(!$VMS_STATUS_SUCCESS(status))
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return NULL;
+ if (!$VMS_STATUS_SUCCESS(status)) {
+ errno = EVMSERR;
+ vaxc$errno = status;
+ return NULL;
}
- /* Quick, cheap and dirty way to discard any device and directory,
- since we only want file names */
- l = (*ctx)->result_dsc.dsc$w_length;
- p = (*ctx)->result_dsc.dsc$a_pointer;
- r = p;
- for (; *p; p++)
- {
- if (*p == '^' && p[1] != '\0') /* Take care of ODS-5 escapes */
- {
- p++;
- }
- else if (*p == ':' || *p == '>' || *p == ']')
- {
- l -= p + 1 - r;
- r = p + 1;
- }
- else if (*p == ';')
- {
- l = p - r;
- break;
- }
+ /*
+ * Quick, cheap and dirty way to discard any device and directory, since
+ * we only want file names
+ */
+ l = (*ctx)->result_dsc.dsc$w_length;
+ p = (*ctx)->result_dsc.dsc$a_pointer;
+ r = p;
+ for (; *p; p++) {
+ if (*p == '^' && p[1] != '\0') { /* Take care of ODS-5 escapes */
+ p++;
+ } else if (*p == ':' || *p == '>' || *p == ']') {
+ l -= p + 1 - r;
+ r = p + 1;
+ } else if (*p == ';') {
+ l = p - r;
+ break;
+ }
}
- strncpy((*ctx)->result, r, l);
- (*ctx)->result[l] = '\0';
- str$free1_dx(&(*ctx)->result_dsc);
+ strncpy((*ctx)->result, r, l);
+ (*ctx)->result[l] = '\0';
+ str$free1_dx(&(*ctx)->result_dsc);
- return (*ctx)->result;
+ return (*ctx)->result;
}
int LP_find_file_end(LP_DIR_CTX **ctx)
{
- if (ctx != NULL && *ctx != NULL)
- {
- int status = lib$find_file_end(&(*ctx)->VMS_context);
-
- free(*ctx);
-
- if(!$VMS_STATUS_SUCCESS(status))
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return 0;
- }
- return 1;
+ if (ctx != NULL && *ctx != NULL) {
+ int status = lib$find_file_end(&(*ctx)->VMS_context);
+
+ free(*ctx);
+
+ if (!$VMS_STATUS_SUCCESS(status)) {
+ errno = EVMSERR;
+ vaxc$errno = status;
+ return 0;
+ }
+ return 1;
}
- errno = EINVAL;
- return 0;
+ errno = EINVAL;
+ return 0;
}
-
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