4 * Copyright (c) 2008 James McKenzie <james@fishsoup.dhs.org>,
9 static char rcsid[] = "$Id$";
13 * Revision 1.4 2008/02/15 18:16:48 james
14 * *** empty log message ***
16 * Revision 1.3 2008/02/15 18:16:35 james
17 * *** empty log message ***
19 * Revision 1.2 2008/02/15 16:48:56 james
20 * *** empty log message ***
22 * Revision 1.1 2008/02/15 15:09:17 james
23 * *** empty log message ***
31 #include <sys/types.h>
47 Filelist *fl = (Filelist *) malloc (sizeof (Filelist));
55 filelist_remove (Filelist * fl, Filelist_ent * fle)
59 for (ep = &fl->head; *ep; ep = &((*ep)->next))
73 filelist_add (Filelist * fl, char *fn)
78 if (i >= FILE_LIST_MAX_LEN)
81 for (fle = fl->head; fle; fle = fle->next)
82 if (!strcmp (fle->name, fn))
85 fle = malloc (sizeof (Filelist_ent));
87 strcpy (fle->name, fn);
94 filelist_free (Filelist * fl)
97 filelist_remove (fl, fl->head);
102 filelist_print (Filelist * fl, FILE * f)
107 fprintf (f, "(empty list)\n");
110 for (fle = fl->head; fle; fle = fle->next)
111 fprintf (f, "%s\n", fle->name);
121 static int uuid = -1, ugid;
126 if (pw = getpwnam ("uucp"))
136 return fchown (fd, uuid, ugid);
140 lockfile_make (char *name)
142 char buf[1024], tmpfn[1024];
147 strcpy (tmpfn, name);
149 ptr = rindex (tmpfn, '/');
155 ptr += sprintf (ptr, "LTMP.%d", getpid ());
158 i = sprintf (buf, "%10d\n", getpid ());
161 fd = open (tmpfn, O_WRONLY | O_CREAT | O_TRUNC, 0444);
179 if (link (tmpfn, name) < 0)
191 lockfile_add_places (Filelist * fl, char *leaf)
196 { "/var/lock/uucp", "/var/spool/lock", "/var/spool/uucp", "/etc/locks",
197 "/usr/spool/uucp", "/var/spool/locks", "/usr/spool/lock",
199 "/usr/spool/uucp/LCK"
203 for (i = 0; i < (sizeof (lock_dirs) / sizeof (char *)); ++i)
205 if (stat (lock_dirs[i], &stbuf))
207 strcpy (buf, lock_dirs[i]);
210 filelist_add (fl, buf);
216 do_tedious_mangling (Filelist * fl, char *buf, char *ptr, char inv, int lower)
220 if (lower && (*ptr >= 'A') && (*ptr <= 'Z'))
227 lockfile_add_places (fl, buf);
232 lockfile_regularize_and_add (Filelist * fl, char *leaf)
234 char buf[1024] = "LCK..";
245 do_tedious_mangling (fl, buf, ptr, '_', 0);
247 do_tedious_mangling (fl, buf, ptr, '_', 1);
249 do_tedious_mangling (fl, buf, ptr, '.', 0);
251 do_tedious_mangling (fl, buf, ptr, '.', 1);
255 lockfile_add_name_from_path (Filelist * fl, char *file)
262 lockfile_regularize_and_add (fl, ptr);
264 if (!strncmp (ptr, "dev/", 4))
267 lockfile_regularize_and_add (fl, ptr);
273 lockfile_add_name_from_dev (Filelist * fl, dev_t dev)
276 sprintf (buf, "LCK.%03d.%03d", major (dev), minor (dev));
277 lockfile_add_places (fl, buf);
281 lockfile_check_dir_for_dev (Filelist * fl, char *dir, dev_t dev)
284 struct stat ent_stat;
293 while ((de = readdir (d)))
296 strcat (buf, de->d_name);
298 if (stat (buf, &ent_stat))
300 if (!S_ISCHR (ent_stat.st_mode))
302 if (ent_stat.st_rdev != dev)
305 lockfile_add_name_from_path (fl, buf);
312 lockfile_make_list (char *device)
314 struct stat dev_stat;
315 Filelist *ret = NULL;
318 if (stat (device, &dev_stat))
320 if (!S_ISCHR (dev_stat.st_mode))
323 ret = filelist_new ();
325 lockfile_add_name_from_dev (ret, dev_stat.st_rdev);
327 lockfile_add_name_from_path (ret, device);
329 lockfile_check_dir_for_dev (ret, "/dev/", dev_stat.st_rdev);
330 lockfile_check_dir_for_dev (ret, "/dev/usb/", dev_stat.st_rdev);
331 lockfile_check_dir_for_dev (ret, "/dev/tts/", dev_stat.st_rdev);
337 lockfile_remove_stale (Filelist * fl)
345 lockfile_lock (Filelist * fl)
350 ret = filelist_new ();
352 lockfile_remove_stale (fl);
354 for (fle = fl->head; fle; fle = fle->next)
356 if (lockfile_make (fle->name))
358 fprintf (stderr, "Failed to get lockfile %s\n", fle->name);
362 filelist_add (ret, fle->name);
370 main (int argc, char *argv[])
372 Filelist *fl = lockfile_make_list ("/dev/ttyS0");
376 filelist_print (fl, stdout);
378 fll = lockfile_lock (fl);
380 filelist_print (fll, stdout);