gas/config/te-vms.c

   1 /* te-vms.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 "as.h"
  21 #include "te-vms.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$to_vms (filespec, translate_unix, 1, 1);
  90   strncpy (vms_filespec, filename_buff, MAXPATH);
  91
  92   vms_filespec [MAXPATH - 1] = (char) 0;
  93
  94   return vms_filespec;
  95 }
  96
  97 #else /* not VMS */
  98
  99 #define _BSD_SOURCE 1
 100 #include <sys/stat.h>
 101 #include <time.h>
 102
 103 #define VMS_EPOCH_OFFSET        35067168000000000LL
 104 #define VMS_GRANULARITY_FACTOR  10000000
 105
 106 #endif /* VMS */
 107
 108 /* Return VMS file date, size, format, version given a name.  */
 109
 110 static int
 111 vms_file_stats_name (const char *dirname,
 112                      const char *filename,
 113                      long long *cdt,
 114                      long *siz,
 115                      char *rfo,
 116                      int *ver)
 117 {
 118   char fullname[strlen (dirname) + strlen (filename) + 1];
 119 #ifdef VMS
 120   struct FAB fab;
 121   struct NAM nam;
 122
 123   unsigned long long create;
 124   FAT recattr;
 125   char ascnamebuff [256];
 126
 127   ATRDEF atrlst[]
 128     = {
 129       { ATR$S_CREDATE,  ATR$C_CREDATE,  &create },
 130       { ATR$S_RECATTR,  ATR$C_RECATTR,  &recattr },
 131       { ATR$S_ASCNAME,  ATR$C_ASCNAME,  &ascnamebuff },
 132       { 0, 0, 0}
 133     };
 134
 135   FIBDEF fib;
 136   struct dsc$descriptor_fib fibdsc = {sizeof (fib), (void *) &fib};
 137
 138   struct IOSB iosb;
 139
 140   long status;
 141   unsigned short chan;
 142
 143   struct vstring file;
 144   struct dsc$descriptor_s filedsc
 145     = {NAM$C_MAXRSS, DSC$K_DTYPE_T, DSC$K_CLASS_S, (void *) file.string};
 146   struct vstring device;
 147   struct dsc$descriptor_s devicedsc
 148     = {NAM$C_MAXRSS, DSC$K_DTYPE_T, DSC$K_CLASS_S, (void *) device.string};
 149   struct vstring result;
 150   struct dsc$descriptor_s resultdsc
 151     = {NAM$C_MAXRSS, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, (void *) result.string};
 152
 153   if (strcmp (filename, "<internal>") == 0
 154       || strcmp (filename, "<built-in>") == 0)
 155     {
 156       if (cdt)
 157         *cdt = 0;
 158
 159       if (siz)
 160         *siz = 0;
 161
 162       if (rfo)
 163         *rfo = 0;
 164
 165       if (ver)
 166         *ver = 0;
 167
 168       return 0;
 169     }
 170
 171   strcpy (fullname, dirname);
 172   strcat (fullname, filename);
 173
 174   tryfile = to_vms_file_spec (fullname);
 175
 176   /* Allocate and initialize a FAB and NAM structures.  */
 177   fab = cc$rms_fab;
 178   nam = cc$rms_nam;
 179
 180   nam.nam$l_esa = file.string;
 181   nam.nam$b_ess = NAM$C_MAXRSS;
 182   nam.nam$l_rsa = result.string;
 183   nam.nam$b_rss = NAM$C_MAXRSS;
 184   fab.fab$l_fna = tryfile;
 185   fab.fab$b_fns = strlen (tryfile);
 186   fab.fab$l_nam = &nam;
 187
 188   /* Validate filespec syntax and device existence.  */
 189   status = SYS$PARSE (&fab, 0, 0);
 190   if ((status & 1) != 1)
 191     return 1;
 192
 193   file.string[nam.nam$b_esl] = 0;
 194
 195   /* Find matching filespec.  */
 196   status = SYS$SEARCH (&fab, 0, 0);
 197   if ((status & 1) != 1)
 198     return 1;
 199
 200   file.string[nam.nam$b_esl] = 0;
 201   result.string[result.length=nam.nam$b_rsl] = 0;
 202
 203   /* Get the device name and assign an IO channel.  */
 204   strncpy (device.string, nam.nam$l_dev, nam.nam$b_dev);
 205   devicedsc.dsc$w_length  = nam.nam$b_dev;
 206   chan = 0;
 207   status = SYS$ASSIGN (&devicedsc, &chan, 0, 0, 0);
 208   if ((status & 1) != 1)
 209     return 1;
 210
 211   /* Initialize the FIB and fill in the directory id field.  */
 212   memset (&fib, 0, sizeof (fib));
 213   fib.fib$w_did[0]  = nam.nam$w_did[0];
 214   fib.fib$w_did[1]  = nam.nam$w_did[1];
 215   fib.fib$w_did[2]  = nam.nam$w_did[2];
 216   fib.fib$l_acctl = 0;
 217   fib.fib$l_wcc = 0;
 218   strcpy (file.string, (strrchr (result.string, ']') + 1));
 219   filedsc.dsc$w_length = strlen (file.string);
 220   result.string[result.length = 0] = 0;
 221
 222   /* Open and close the file to fill in the attributes.  */
 223   status
 224     = SYS$QIOW (0, chan, IO$_ACCESS|IO$M_ACCESS, &iosb, 0, 0,
 225                 &fibdsc, &filedsc, &result.length, &resultdsc, &atrlst, 0);
 226   if ((status & 1) != 1)
 227     return 1;
 228   if ((iosb.status & 1) != 1)
 229     return 1;
 230
 231   result.string[result.length] = 0;
 232   status = SYS$QIOW (0, chan, IO$_DEACCESS, &iosb, 0, 0, &fibdsc, 0, 0, 0,
 233                      &atrlst, 0);
 234   if ((status & 1) != 1)
 235     return 1;
 236   if ((iosb.status & 1) != 1)
 237     return 1;
 238
 239   /* Deassign the channel and exit.  */
 240   status = SYS$DASSGN (chan);
 241   if ((status & 1) != 1)
 242     return 1;
 243
 244   if (cdt) *cdt = create;
 245   if (siz) *siz = (512 * 65536 * recattr.fat$w_efblkh) +
 246                   (512 * (recattr.fat$w_efblkl - 1)) +
 247                   recattr.fat$w_ffbyte;
 248   if (rfo) *rfo = recattr.fat$v_rtype;
 249   if (ver) *ver = strtol (strrchr (ascnamebuff, ';') + 1, 0, 10);
 250 #else /* not VMS */
 251
 252   struct stat buff;
 253   struct tm *ts;
 254   long long gmtoff, secs, nsecs;
 255
 256   strcpy (fullname, dirname);
 257   strcat (fullname, filename);
 258
 259   if ((stat (fullname, &buff)) != 0)
 260      return 1;
 261
 262   if (cdt)
 263     {
 264       ts = localtime (& buff.st_mtime);
 265
 266 #ifdef HAVE_TM_GMTOFF
 267         gmtoff = ts->tm_gmtoff;
 268 #else
 269         {
 270           extern long timezone;
 271
 272           if (ts->tm_isdst == 1)
 273             gmtoff = - (timezone - 3600);
 274           else
 275             gmtoff = - timezone;
 276         }
 277 #endif
 278
 279 #ifdef HAVE_ST_MTIM_TV_SEC
 280       secs = buff.st_mtim.tv_sec;
 281 #else
 282       secs = buff.st_mtime;
 283 #endif
 284
 285 #ifdef HAVE_ST_MTIM_TV_NSEC
 286       nsecs = buff.st_mtim.tv_nsec;
 287 #else
 288       nsecs = 0;
 289 #endif
 290
 291       /* VMS timestamps are stored in local time to 100 nsec accuracy, but by
 292          experiment I found timestamps truncated to (at least) microseconds
 293          on an NFS mounted filesystem, hence the adjustment below. DBR. */
 294       *cdt = ((secs + gmtoff) * VMS_GRANULARITY_FACTOR)
 295         + (nsecs / 1000 * 10) + VMS_EPOCH_OFFSET;
 296     }
 297
 298   if (siz)
 299     *siz = buff.st_size;
 300
 301   if (rfo)
 302     *rfo = 2; /* Stream LF format.  */
 303
 304   /* Returning a file version of 0 is never correct for debug info, version 1
 305      will be correct if file editing is done only on the Unix side.  If editing
 306      is done on the VMS side, then its TBD.  */
 307   if (ver)
 308     *ver = 1;
 309 #endif /* VMS */
 310
 311   return 0;
 312 }
 313
 314 bfd_uint64_t
 315 vms_dwarf2_file_time_name (const char *filename, const char *dirname)
 316 {
 317   long long cdt;
 318
 319   if (vms_file_stats_name (dirname, filename, &cdt, 0, 0, 0) == 0)
 320     return cdt;
 321   else
 322     return 0;
 323 }
 324
 325 long
 326 vms_dwarf2_file_size_name (const char *filename, const char *dirname)
 327 {
 328   long siz;
 329
 330   if (vms_file_stats_name (dirname, filename, 0, &siz, 0, 0) == 0)
 331     return siz;
 332   else
 333     return 0;
 334 }
 335
 336 /* VMS debugger needs the filename with version appended.  */
 337 /* Longest filename on VMS is 255 characters. Largest version is 32768.  */
 338 char *
 339 vms_dwarf2_file_name (const char *filename, const char *dirname)
 340 {
 341   int ver;
 342   static char buff [255 + 7];
 343
 344   vms_file_stats_name (dirname, filename, 0, 0, 0, &ver);
 345   snprintf (buff, 255 + 7, "%s;%d", filename, ver);
 346   return buff;
 347 }