bfd/vmsutil.c

   1 /* vmsutil.c -- Utilities for VMS.
   2    Copyright 2009 Free Software Foundation, Inc.
   3
   4    Written by Douglas B Rupp <rupp@gnat.com>
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  19
  20 #include "sysdep.h"
  21 #include "vmsutil.h"
  22
  23 /* The purspose of the two alternate versions below is to have one that
  24    works for native VMS and one that works on an NFS mounted filesystem
  25    (Unix Server/VMS client).  The main issue being to generate the special
  26    VMS file timestamps for the debug info.  */
  27
  28 #ifdef VMS
  29 #define __NEW_STARLET 1
  30 #include <vms/starlet.h>
  31 #include <vms/rms.h>
  32 #include <vms/atrdef.h>
  33 #include <vms/fibdef.h>
  34 #include <vms/stsdef.h>
  35 #include <vms/iodef.h>
  36 #include <vms/fatdef.h>
  37 #include <errno.h>
  38 #include <vms/descrip.h>
  39 #include <string.h>
  40 #include <unixlib.h>
  41
  42 #define MAXPATH 256
  43
  44 /* Descrip.h doesn't have everything...  */
  45 typedef struct fibdef * __fibdef_ptr32 __attribute__ (( mode (SI) ));
  46
  47 struct dsc$descriptor_fib
  48 {
  49   unsigned int   fib$l_len;
  50   __fibdef_ptr32 fib$l_addr;
  51 };
  52
  53 /* I/O Status Block.  */
  54 struct IOSB
  55 {
  56   unsigned short status, count;
  57   unsigned int devdep;
  58 };
  59
  60 static char *tryfile;
  61
  62 /* Variable length string.  */
  63 struct vstring
  64 {
  65   short length;
  66   char string[NAM$C_MAXRSS+1];
  67 };
  68
  69 static char filename_buff [MAXPATH];
  70 static char vms_filespec [MAXPATH];
  71
  72 /* Callback function for filespec style conversion.  */
  73
  74 static int
  75 translate_unix (char *name, int type ATTRIBUTE_UNUSED)
  76 {
  77   strncpy (filename_buff, name, MAXPATH);
  78   filename_buff [MAXPATH - 1] = (char) 0;
  79   return 0;
  80 }
  81
  82 /* Wrapper for DECC function that converts a Unix filespec
  83    to VMS style filespec.  */
  84
  85 static char *
  86 to_vms_file_spec (char *filespec)
  87 {
  88   strncpy (vms_filespec, "", MAXPATH);
  89   decc$to_vms (filespec, translate_unix, 1, 1);
  90   strncpy (vms_filespec, filename_buff, MAXPATH);
  91
  92   vms_filespec [MAXPATH - 1] = (char) 0;
  93
  94   return vms_filespec;
  95 }
  96
  97 #else /* not VMS */
  98
  99 #define _BSD_SOURCE 1
 100 #include <sys/stat.h>
 101 #include <time.h>
 102
 103 #define VMS_EPOCH_OFFSET        35067168000000000LL
 104 #define VMS_GRANULARITY_FACTOR  10000000
 105
 106 #endif /* VMS */
 107
 108 /* Return VMS file date, size, format, version given a name.  */
 109
 110 int
 111 vms_file_stats_name (const char *filename,
 112                      long long *cdt,
 113                      long *siz,
 114                      char *rfo,
 115                      int *ver)
 116 {
 117 #ifdef VMS
 118   struct FAB fab;
 119   struct NAM nam;
 120
 121   unsigned long long create;
 122   FAT recattr;
 123   char ascnamebuff [256];
 124
 125   ATRDEF atrlst[]
 126     = {
 127       { ATR$S_CREDATE,  ATR$C_CREDATE,  &create },
 128       { ATR$S_RECATTR,  ATR$C_RECATTR,  &recattr },
 129       { ATR$S_ASCNAME,  ATR$C_ASCNAME,  &ascnamebuff },
 130       { 0, 0, 0}
 131     };
 132
 133   FIBDEF fib;
 134   struct dsc$descriptor_fib fibdsc = {sizeof (fib), (void *) &fib};
 135
 136   struct IOSB iosb;
 137
 138   long status;
 139   unsigned short chan;
 140
 141   struct vstring file;
 142   struct dsc$descriptor_s filedsc
 143     = {NAM$C_MAXRSS, DSC$K_DTYPE_T, DSC$K_CLASS_S, (void *) file.string};
 144   struct vstring device;
 145   struct dsc$descriptor_s devicedsc
 146     = {NAM$C_MAXRSS, DSC$K_DTYPE_T, DSC$K_CLASS_S, (void *) device.string};
 147   struct vstring result;
 148   struct dsc$descriptor_s resultdsc
 149     = {NAM$C_MAXRSS, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, (void *) result.string};
 150
 151   if (strcmp (filename, "<internal>") == 0
 152       || strcmp (filename, "<built-in>") == 0)
 153     {
 154       if (cdt)
 155         *cdt = 0;
 156
 157       if (siz)
 158         *siz = 0;
 159
 160       if (rfo)
 161         *rfo = 0;
 162
 163       if (ver)
 164         *ver = 0;
 165
 166       return 0;
 167     }
 168
 169   tryfile = to_vms_file_spec ((char *) filename);
 170
 171   /* Allocate and initialize a FAB and NAM structures.  */
 172   fab = cc$rms_fab;
 173   nam = cc$rms_nam;
 174
 175   nam.nam$l_esa = file.string;
 176   nam.nam$b_ess = NAM$C_MAXRSS;
 177   nam.nam$l_rsa = result.string;
 178   nam.nam$b_rss = NAM$C_MAXRSS;
 179   fab.fab$l_fna = tryfile;
 180   fab.fab$b_fns = strlen (tryfile);
 181   fab.fab$l_nam = &nam;
 182
 183   /* Validate filespec syntax and device existence.  */
 184   status = SYS$PARSE (&fab, 0, 0);
 185   if ((status & 1) != 1)
 186     return 1;
 187
 188   file.string[nam.nam$b_esl] = 0;
 189
 190   /* Find matching filespec.  */
 191   status = SYS$SEARCH (&fab, 0, 0);
 192   if ((status & 1) != 1)
 193     return 1;
 194
 195   file.string[nam.nam$b_esl] = 0;
 196   result.string[result.length=nam.nam$b_rsl] = 0;
 197
 198   /* Get the device name and assign an IO channel.  */
 199   strncpy (device.string, nam.nam$l_dev, nam.nam$b_dev);
 200   devicedsc.dsc$w_length  = nam.nam$b_dev;
 201   chan = 0;
 202   status = SYS$ASSIGN (&devicedsc, &chan, 0, 0, 0);
 203   if ((status & 1) != 1)
 204     return 1;
 205
 206   /* Initialize the FIB and fill in the directory id field.  */
 207   memset (&fib, 0, sizeof (fib));
 208   fib.fib$w_did[0]  = nam.nam$w_did[0];
 209   fib.fib$w_did[1]  = nam.nam$w_did[1];
 210   fib.fib$w_did[2]  = nam.nam$w_did[2];
 211   fib.fib$l_acctl = 0;
 212   fib.fib$l_wcc = 0;
 213   strcpy (file.string, (strrchr (result.string, ']') + 1));
 214   filedsc.dsc$w_length = strlen (file.string);
 215   result.string[result.length = 0] = 0;
 216
 217   /* Open and close the file to fill in the attributes.  */
 218   status
 219     = SYS$QIOW (0, chan, IO$_ACCESS|IO$M_ACCESS, &iosb, 0, 0,
 220                 &fibdsc, &filedsc, &result.length, &resultdsc, &atrlst, 0);
 221   if ((status & 1) != 1)
 222     return 1;
 223   if ((iosb.status & 1) != 1)
 224     return 1;
 225
 226   result.string[result.length] = 0;
 227   status = SYS$QIOW (0, chan, IO$_DEACCESS, &iosb, 0, 0, &fibdsc, 0, 0, 0,
 228                      &atrlst, 0);
 229   if ((status & 1) != 1)
 230     return 1;
 231   if ((iosb.status & 1) != 1)
 232     return 1;
 233
 234   /* Deassign the channel and exit.  */
 235   status = SYS$DASSGN (chan);
 236   if ((status & 1) != 1)
 237     return 1;
 238
 239   if (cdt) *cdt = create;
 240   if (siz) *siz = (512 * 65536 * recattr.fat$w_efblkh) +
 241                   (512 * (recattr.fat$w_efblkl - 1)) +
 242                   recattr.fat$w_ffbyte;
 243   if (rfo) *rfo = recattr.fat$v_rtype;
 244   if (ver) *ver = strtol (strrchr (ascnamebuff, ';') + 1, 0, 10);
 245 #else /* not VMS */
 246
 247   struct stat buff;
 248   struct tm *ts;
 249   long long gmtoff, secs, nsecs;
 250
 251   if ((stat (filename, &buff)) != 0)
 252      return 1;
 253
 254   if (cdt)
 255     {
 256       ts = localtime (& buff.st_mtime);
 257
 258 #ifdef HAVE_TM_GMTOFF
 259         gmtoff = ts->tm_gmtoff;
 260 #else
 261         {
 262           extern long timezone;
 263
 264           if (ts->tm_isdst == 1)
 265             gmtoff = - (timezone - 3600);
 266           else
 267             gmtoff = - timezone;
 268         }
 269 #endif
 270
 271 #ifdef HAVE_ST_MTIM_TV_SEC
 272       secs = buff.st_mtim.tv_sec;
 273 #else
 274       secs = buff.st_mtime;
 275 #endif
 276
 277 #ifdef HAVE_ST_MTIM_TV_NSEC
 278       nsecs = buff.st_mtim.tv_nsec;
 279 #else
 280       nsecs = 0;
 281 #endif
 282
 283       /* VMS timestamps are stored in local time to 100 nsec accuracy, but by
 284          experiment I found timestamps truncated to (at least) microseconds
 285          on an NFS mounted filesystem, hence the adjustment below. DBR. */
 286       *cdt = ((secs + gmtoff) * VMS_GRANULARITY_FACTOR)
 287         + (nsecs / 1000 * 10) + VMS_EPOCH_OFFSET;
 288     }
 289
 290   if (siz)
 291     *siz = buff.st_size;
 292
 293   if (rfo)
 294     *rfo = 2; /* Stream LF format.  */
 295
 296   /* Returning a file version of 0 is never correct for debug info, version 1
 297      will be correct if file editing is done only on the Unix side.  If editing
 298      is done on the VMS side, then its TBD.  */
 299   if (ver)
 300     *ver = 1;
 301 #endif /* VMS */
 302
 303   return 0;
 304 }
 305