Keep the command line on the heap to avoid stack overflow.
[make.git] / vmsfunctions.c
blob8cae17fed2d3803f2116c1797a0cd3f3f914ecf0
1 /* VMS functions
2 Copyright (C) 1996-2012 Free Software Foundation, Inc.
3 This file is part of GNU Make.
5 GNU Make is free software; you can redistribute it and/or modify it under the
6 terms of the GNU General Public License as published by the Free Software
7 Foundation; either version 3 of the License, or (at your option) any later
8 version.
10 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
11 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12 A PARTICULAR PURPOSE. See the GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License along with
15 this program. If not, see <http://www.gnu.org/licenses/>. */
17 #include "make.h"
18 #include "debug.h"
19 #include "job.h"
21 #ifdef __DECC
22 #include <starlet.h>
23 #endif
24 #include <descrip.h>
25 #include <rms.h>
26 #include <iodef.h>
27 #include <atrdef.h>
28 #include <fibdef.h>
29 #include "vmsdir.h"
31 #ifdef HAVE_VMSDIR_H
33 DIR *
34 opendir (char *dspec)
36 struct DIR *dir = xcalloc (sizeof (struct DIR));
37 struct NAM *dnam = xmalloc (sizeof (struct NAM));
38 struct FAB *dfab = &dir->fab;
39 char *searchspec = xmalloc (MAXNAMLEN + 1);
41 *dfab = cc$rms_fab;
42 *dnam = cc$rms_nam;
43 sprintf (searchspec, "%s*.*;", dspec);
45 dfab->fab$l_fna = searchspec;
46 dfab->fab$b_fns = strlen (searchspec);
47 dfab->fab$l_nam = dnam;
49 *dnam = cc$rms_nam;
50 dnam->nam$l_esa = searchspec;
51 dnam->nam$b_ess = MAXNAMLEN;
53 if (! (sys$parse (dfab) & 1))
55 free (dir);
56 free (dnam);
57 free (searchspec);
58 return (NULL);
61 return dir;
64 #define uppercasify(str) \
65 do \
66 { \
67 char *tmp; \
68 for (tmp = (str); *tmp != '\0'; tmp++) \
69 if (islower ((unsigned char)*tmp)) \
70 *tmp = toupper ((unsigned char)*tmp); \
71 } \
72 while (0)
74 struct direct *
75 readdir (DIR *dir)
77 struct FAB *dfab = &dir->fab;
78 struct NAM *dnam = (struct NAM *)(dfab->fab$l_nam);
79 struct direct *dentry = &dir->dir;
80 int i;
82 memset (dentry, 0, sizeof *dentry);
84 dnam->nam$l_rsa = dir->d_result;
85 dnam->nam$b_rss = MAXNAMLEN;
87 DB (DB_VERBOSE, ("."));
89 if (!((i = sys$search (dfab)) & 1))
91 DB (DB_VERBOSE, (_("sys$search() failed with %d\n"), i));
92 return (NULL);
95 dentry->d_off = 0;
96 if (dnam->nam$w_fid == 0)
97 dentry->d_fileno = 1;
98 else
99 dentry->d_fileno = dnam->nam$w_fid[0] + (dnam->nam$w_fid[1] << 16);
101 dentry->d_reclen = sizeof (struct direct);
102 dentry->d_namlen = dnam->nam$b_name + dnam->nam$b_type;
103 strncpy (dentry->d_name, dnam->nam$l_name, dentry->d_namlen);
104 dentry->d_name[dentry->d_namlen] = '\0';
106 #ifdef HAVE_CASE_INSENSITIVE_FS
107 uppercasify (dentry->d_name);
108 #endif
110 return (dentry);
114 closedir (DIR *dir)
116 if (dir != NULL)
118 struct FAB *dfab = &dir->fab;
119 struct NAM *dnam = (struct NAM *)(dfab->fab$l_nam);
120 if (dnam != NULL)
121 free (dnam->nam$l_esa);
122 free (dnam);
123 free (dir);
126 return 0;
128 #endif /* compiled for OpenVMS prior to V7.x */
130 char *
131 getwd (char *cwd)
133 static char buf[512];
135 if (cwd)
136 return (getcwd (cwd, 512));
137 else
138 return (getcwd (buf, 512));
141 #if 0
143 * Is this used? I don't see any reference, so I suggest to remove it.
146 vms_stat (char *name, struct stat *buf)
148 int status;
149 int i;
151 static struct FAB Fab;
152 static struct NAM Nam;
153 static struct fibdef Fib; /* short fib */
154 static struct dsc$descriptor FibDesc =
155 { sizeof (Fib), DSC$K_DTYPE_Z, DSC$K_CLASS_S, (char *) &Fib };
156 static struct dsc$descriptor_s DevDesc =
157 { 0, DSC$K_DTYPE_T, DSC$K_CLASS_S, &Nam.nam$t_dvi[1] };
158 static char EName[NAM$C_MAXRSS];
159 static char RName[NAM$C_MAXRSS];
160 static struct dsc$descriptor_s FileName =
161 { 0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0 };
162 static struct dsc$descriptor_s string =
163 { 0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0 };
164 static unsigned long Rdate[2];
165 static unsigned long Cdate[2];
166 static struct atrdef Atr[] =
168 #if defined(VAX)
169 /* Revision date */
170 { sizeof (Rdate), ATR$C_REVDATE, (unsigned int) &Rdate[0] },
171 /* Creation date */
172 { sizeof (Cdate), ATR$C_CREDATE, (unsigned int) &Cdate[0] },
173 #else
174 /* Revision date */
175 { sizeof (Rdate), ATR$C_REVDATE, &Rdate[0] },
176 /* Creation date */
177 { sizeof (Cdate), ATR$C_CREDATE, &Cdate[0]},
178 #endif
179 { 0, 0, 0 }
181 static short int DevChan;
182 static short int iosb[4];
184 name = vmsify (name, 0);
186 /* initialize RMS structures, we need a NAM to retrieve the FID */
187 Fab = cc$rms_fab;
188 Fab.fab$l_fna = name; /* name of file */
189 Fab.fab$b_fns = strlen (name);
190 Fab.fab$l_nam = &Nam; /* FAB has an associated NAM */
192 Nam = cc$rms_nam;
193 Nam.nam$l_esa = EName; /* expanded filename */
194 Nam.nam$b_ess = sizeof (EName);
195 Nam.nam$l_rsa = RName; /* resultant filename */
196 Nam.nam$b_rss = sizeof (RName);
198 /* do $PARSE and $SEARCH here */
199 status = sys$parse (&Fab);
200 if (!(status & 1))
201 return -1;
203 DevDesc.dsc$w_length = Nam.nam$t_dvi[0];
204 status = sys$assign (&DevDesc, &DevChan, 0, 0);
205 if (!(status & 1))
206 return -1;
208 FileName.dsc$a_pointer = Nam.nam$l_name;
209 FileName.dsc$w_length = Nam.nam$b_name + Nam.nam$b_type + Nam.nam$b_ver;
211 /* Initialize the FIB */
212 for (i = 0; i < 3; i++)
214 #ifndef __VAXC
215 Fib.fib$w_fid[i] = Nam.nam$w_fid[i];
216 Fib.fib$w_did[i] = Nam.nam$w_did[i];
217 #else
218 Fib.fib$r_fid_overlay.fib$w_fid[i] = Nam.nam$w_fid[i];
219 Fib.fib$r_did_overlay.fib$w_did[i] = Nam.nam$w_did[i];
220 #endif
223 status = sys$qiow (0, DevChan, IO$_ACCESS, &iosb, 0, 0,
224 &FibDesc, &FileName, 0, 0, &Atr, 0);
225 sys$dassgn (DevChan);
226 if (!(status & 1))
227 return -1;
228 status = iosb[0];
229 if (!(status & 1))
230 return -1;
232 status = stat (name, buf);
233 if (status)
234 return -1;
236 buf->st_mtime = ((Rdate[0] >> 24) & 0xff) + ((Rdate[1] << 8) & 0xffffff00);
237 buf->st_ctime = ((Cdate[0] >> 24) & 0xff) + ((Cdate[1] << 8) & 0xffffff00);
239 return 0;
241 #endif
243 char *
244 cvt_time (unsigned long tval)
246 static long int date[2];
247 static char str[27];
248 static struct dsc$descriptor date_str =
249 { 26, DSC$K_DTYPE_T, DSC$K_CLASS_S, str };
251 date[0] = (tval & 0xff) << 24;
252 date[1] = ((tval >> 8) & 0xffffff);
254 if ((date[0] == 0) && (date[1] == 0))
255 return ("never");
257 sys$asctim (0, &date_str, date, 0);
258 str[26] = '\0';
260 return (str);