/* $OpenBSD: lndir.c,v 1.4 1996/08/19 14:20:18 niklas Exp $ */ /* $XConsortium: lndir.c /main/15 1995/08/30 10:56:18 gildea $ */ /* Create shadow link tree (after X11R4 script of the same name) Mark Reinhold (mbr@lcs.mit.edu)/3 January 1990 */ /* Copyright (c) 1990, X Consortium Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of the X Consortium shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from the X Consortium. */ /* From the original /bin/sh script: Used to create a copy of the a directory tree that has links for all non-directories (except those named RCS, SCCS or CVS.adm). If you are building the distribution on more than one machine, you should use this technique. If your master sources are located in /usr/local/src/X and you would like your link tree to be in /usr/local/src/new-X, do the following: % mkdir /usr/local/src/new-X % cd /usr/local/src/new-X % lndir ../X */ #include #include #include #include #include #include #include #include #include int silent = 0; /* -silent */ int ignore_links = 0; /* -ignorelinks */ char *rcurdir; char *curdir; struct except { char *name; struct except *next; }; struct except *exceptions = (struct except *)NULL; void quit (int code, char * fmt, ...) { va_list args; va_start(args, fmt); vfprintf (stderr, fmt, args); va_end(args); putc ('\n', stderr); exit (code); } void quiterr (code, s) char *s; { perror (s); exit (code); } void msg (char * fmt, ...) { va_list args; if (curdir) { fprintf (stderr, "%s:\n", curdir); curdir = 0; } va_start(args, fmt); vfprintf (stderr, fmt, args); va_end(args); putc ('\n', stderr); } void mperror (s) char *s; { if (curdir) { fprintf (stderr, "%s:\n", curdir); curdir = 0; } perror (s); } int equivalent(lname, rname) char *lname; char *rname; { char *s; if (!strcmp(lname, rname)) return 1; for (s = lname; *s && (s = strchr(s, '/')); s++) { while (s[1] == '/') strcpy(s+1, s+2); } return !strcmp(lname, rname); } addexcept(name) char *name; { struct except *new; new = (struct except *)malloc(sizeof(struct except)); if (new == (struct except *)NULL) quiterr(1, "addexcept"); new->name = strdup(name); if (new->name == (char *)NULL) quiterr(1, "addexcept"); new->next = exceptions; exceptions = new; } /* Recursively create symbolic links from the current directory to the "from" directory. Assumes that files described by fs and ts are directories. */ dodir (fn, fs, ts, rel) char *fn; /* name of "from" directory, either absolute or relative to cwd */ struct stat *fs, *ts; /* stats for the "from" directory and cwd */ int rel; /* if true, prepend "../" to fn before using */ { DIR *df; struct dirent *dp; char buf[MAXPATHLEN + 1], *p; char symbuf[MAXPATHLEN + 1]; char basesym[MAXPATHLEN + 1]; struct stat sb, sc; int n_dirs; int symlen; int basesymlen = -1; char *ocurdir; struct except *cur; if ((fs->st_dev == ts->st_dev) && (fs->st_ino == ts->st_ino)) { msg ("%s: From and to directories are identical!", fn); return 1; } if (rel) strcpy (buf, "../"); else buf[0] = '\0'; strcat (buf, fn); if (!(df = opendir (buf))) { msg ("%s: Cannot opendir", buf); return 1; } p = buf + strlen (buf); *p++ = '/'; n_dirs = fs->st_nlink; while (dp = readdir (df)) { if (dp->d_name[strlen(dp->d_name) - 1] == '~') continue; for (cur = exceptions; cur != (struct except *)NULL; cur = cur->next) { if (!strcmp (dp->d_name, cur->name)) goto next; /* can't continue */ } strcpy (p, dp->d_name); if (n_dirs > 0) { if (stat (buf, &sb) < 0) { mperror (buf); continue; } if(S_ISDIR(sb.st_mode)) { /* directory */ n_dirs--; if (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || (dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) continue; if (!strcmp (dp->d_name, "RCS")) continue; if (!strcmp (dp->d_name, "SCCS")) continue; if (!strcmp (dp->d_name, "CVS")) continue; if (!strcmp (dp->d_name, "CVS.adm")) continue; ocurdir = rcurdir; rcurdir = buf; curdir = silent ? buf : (char *)0; if (!silent) printf ("%s:\n", buf); if ((stat (dp->d_name, &sc) < 0) && (errno == ENOENT)) { if (mkdir (dp->d_name, 0777) < 0 || stat (dp->d_name, &sc) < 0) { mperror (dp->d_name); curdir = rcurdir = ocurdir; continue; } } if (readlink (dp->d_name, symbuf, sizeof(symbuf) - 1) >= 0) { msg ("%s: is a link instead of a directory", dp->d_name); curdir = rcurdir = ocurdir; continue; } if (chdir (dp->d_name) < 0) { mperror (dp->d_name); curdir = rcurdir = ocurdir; continue; } dodir (buf, &sb, &sc, (buf[0] != '/')); if (chdir ("..") < 0) quiterr (1, ".."); curdir = rcurdir = ocurdir; continue; } } /* non-directory */ symlen = readlink (dp->d_name, symbuf, sizeof(symbuf) - 1); if (symlen >= 0) symbuf[symlen] = '\0'; /* The option to ignore links exists mostly because checking for them slows us down by 10-20%. But it is off by default because this really is a useful check. */ if (!ignore_links) { /* see if the file in the base tree was a symlink */ basesymlen = readlink(buf, basesym, sizeof(basesym) - 1); if (basesymlen >= 0) basesym[basesymlen] = '\0'; } if (symlen >= 0) { /* Link exists in new tree. Print message if it doesn't match. */ if (!equivalent (basesymlen>=0 ? basesym : buf, symbuf)) msg ("%s: %s", dp->d_name, symbuf); } else { if (symlink (basesymlen>=0 ? basesym : buf, dp->d_name) < 0) mperror (dp->d_name); } next: } closedir (df); return 0; } main (ac, av) int ac; char **av; { char *prog_name = av[0]; char *fn, *tn; struct stat fs, ts; while (++av, --ac) { if ((strcmp(*av, "-silent") == 0) || (strcmp(*av, "-s") == 0)) silent = 1; else if ((strcmp(*av, "-ignorelinks") == 0) || (strcmp(*av, "-i") == 0)) ignore_links = 1; else if (strcmp(*av, "-e") == 0) { ++av, --ac; if (ac < 2) quit (1, "usage: %s [-e except] [-s] [-i] fromdir [todir]", prog_name); addexcept(*av); } else if (strcmp(*av, "--") == 0) { ++av, --ac; break; } else break; } if (ac < 1 || ac > 2) quit (1, "usage: %s [-e except] [-s] [-i] fromdir [todir]", prog_name); fn = av[0]; if (ac == 2) tn = av[1]; else tn = "."; /* to directory */ if (stat (tn, &ts) < 0) quiterr (1, tn); if (!(S_ISDIR(ts.st_mode))) quit (2, "%s: Not a directory", tn); if (chdir (tn) < 0) quiterr (1, tn); /* from directory */ if (stat (fn, &fs) < 0) quiterr (1, fn); if (!(S_ISDIR(fs.st_mode))) quit (2, "%s: Not a directory", fn); exit (dodir (fn, &fs, &ts, 0)); }