/* $Xorg: lndir.c,v 1.5 2001/02/09 02:03:17 xorgcvs Exp $ */ /* Create shadow link tree (after X11R4 script of the same name) Mark Reinhold (mbr@lcs.mit.edu)/3 January 1990 */ /* Copyright (c) 1990, 1998 The Open Group Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. 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 OPEN GROUP 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 Open Group 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 Open Group. */ /* $XFree86: xc/config/util/lndir.c,v 3.18 2003/06/24 15:44:45 eich Exp $ */ /* From the original /bin/sh script: Used to create a copy of the a directory tree that has links for all non-directories (except, by default, those named BitKeeper, 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 <X11/Xos.h> #include <X11/Xfuncproto.h> #include <stdio.h> #include <stdlib.h> #include <sys/stat.h> #if !defined(MINIX) && !defined(Lynx) #include <sys/param.h> #endif #include <errno.h> #ifndef X_NOT_POSIX #include <dirent.h> #else #ifdef SYSV #include <dirent.h> #else #ifdef USG #include <dirent.h> #else #include <sys/dir.h> #ifndef dirent #define dirent direct #endif #endif #endif #endif #ifndef MAXPATHLEN #define MAXPATHLEN 2048 #endif #include <stdarg.h> int silent = 0; /* -silent */ int ignore_links = 0; /* -ignorelinks */ int with_revinfo = 0; /* -withrevinfo */ char *rcurdir; char *curdir; static 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); } static void quiterr (int code, char *s) { perror (s); exit (code); } static 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); } static void mperror (char *s) { if (curdir) { fprintf (stderr, "%s:\n", curdir); curdir = 0; } perror (s); } static int equivalent(char *lname, char *rname, char **p) { char *s; if (!strcmp(lname, rname)) return 1; for (s = lname; *s && (s = strchr(s, '/')); s++) { while (s[1] == '/') { strcpy(s+1, s+2); if (*p) (*p)--; } } return !strcmp(lname, rname); } /* Recursively create symbolic links from the current directory to the "from" directory. Assumes that files described by fs and ts are directories. */ static int dodir (char *fn, /* name of "from" directory, either absolute or relative to cwd */ struct stat *fs, struct stat *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; 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); if (*(p - 1) != '/') *p++ = '/'; n_dirs = fs->st_nlink; while ((dp = readdir (df))) { if (dp->d_name[strlen(dp->d_name) - 1] == '~') continue; #ifdef __DARWIN__ /* Ignore these Mac OS X Finder data files */ if (!strcmp(dp->d_name, ".DS_Store") || !strcmp(dp->d_name, "._.DS_Store")) continue; #endif strcpy (p, dp->d_name); if (n_dirs > 0) { if (lstat (buf, &sb) < 0) { mperror (buf); continue; } #ifdef S_ISDIR if(S_ISDIR(sb.st_mode)) #else if ((sb.st_mode & S_IFMT) == S_IFDIR) #endif { /* directory */ n_dirs--; if (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || (dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) continue; if (!with_revinfo) { if (!strcmp (dp->d_name, "BitKeeper")) 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; if (!strcmp (dp->d_name, ".svn")) 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, basesymlen>=0 ? (char **) 0 : &p)) msg ("%s: %s", dp->d_name, symbuf); } else { char *sympath; if (basesymlen>=0) { if ((buf[0] == '.') && (buf[1] == '.') && (buf[2] == '/') && (basesym[0] == '.') && (basesym[1] == '.') && (basesym[2] == '/')) { /* It becomes very tricky here. We have ../../bar/foo symlinked to ../xxx/yyy. We can't just use ../xxx/yyy. We have to use ../../bar/foo/../xxx/yyy. */ int i; char *start, *end; strcpy (symbuf, buf); /* Find the first char after "../" in symbuf. */ start = symbuf; do { start += 3; } while ((start[0] == '.') && (start[1] == '.') && (start[2] == '/')); /* Then try to eliminate "../"s in basesym. */ i = 0; end = strrchr (symbuf, '/'); if (start < end) { do { i += 3; end--; while ((*end != '/') && (end != start)) end--; if (end == start) break; } while ((basesym[i] == '.') && (basesym[i + 1] == '.') && (basesym[i + 2] == '/')); } if (*end == '/') end++; strcpy (end, &basesym[i]); sympath = symbuf; } else sympath = basesym; } else sympath = buf; if (symlink (sympath, dp->d_name) < 0) mperror (dp->d_name); } } closedir (df); return 0; } int main (int ac, char *av[]) { char *prog_name = av[0]; char *fn, *tn; struct stat fs, ts; while (++av, --ac) { if (strcmp(*av, "-silent") == 0) silent = 1; else if (strcmp(*av, "-ignorelinks") == 0) ignore_links = 1; else if (strcmp(*av, "-withrevinfo") == 0) with_revinfo = 1; else if (strcmp(*av, "--") == 0) { ++av, --ac; break; } else break; } if (ac < 1 || ac > 2) quit (1, "usage: %s [-silent] [-ignorelinks] 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); #ifdef S_ISDIR if (!(S_ISDIR(ts.st_mode))) #else if (!(ts.st_mode & S_IFMT) == S_IFDIR) #endif quit (2, "%s: Not a directory", tn); if (chdir (tn) < 0) quiterr (1, tn); /* from directory */ if (stat (fn, &fs) < 0) quiterr (1, fn); #ifdef S_ISDIR if (!(S_ISDIR(fs.st_mode))) #else if (!(fs.st_mode & S_IFMT) == S_IFDIR) #endif quit (2, "%s: Not a directory", fn); exit (dodir (fn, &fs, &ts, 0)); }