Initial import of the CDE 2.1.30 sources from the Open Group.
This commit is contained in:
Peter Howkins
349
cde/config/util/lndir.c
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349
cde/config/util/lndir.c
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/* $TOG: lndir.c /main/17 1998/02/06 11:23:50 kaleb $ */
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/* Create shadow link tree (after X11R4 script of the same name)
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Mark Reinhold (mbr@lcs.mit.edu)/3 January 1990 */
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/*
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Copyright (c) 1990, 1998 The Open Group
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All Rights Reserved.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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*/
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/* From the original /bin/sh script:
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Used to create a copy of the a directory tree that has links for all
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non-directories (except those named RCS, SCCS or CVS.adm). If you are
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building the distribution on more than one machine, you should use
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this technique.
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If your master sources are located in /usr/local/src/X and you would like
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your link tree to be in /usr/local/src/new-X, do the following:
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% mkdir /usr/local/src/new-X
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% cd /usr/local/src/new-X
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% lndir ../X
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*/
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#include <X11/Xos.h>
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#include <X11/Xfuncproto.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <sys/param.h>
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#include <errno.h>
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#ifndef X_NOT_POSIX
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#include <dirent.h>
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#else
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#ifdef SYSV
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#include <dirent.h>
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#else
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#ifdef USG
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#include <dirent.h>
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#else
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#include <sys/dir.h>
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#ifndef dirent
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#define dirent direct
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#endif
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#endif
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#endif
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#endif
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#ifndef MAXPATHLEN
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#define MAXPATHLEN 2048
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#endif
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#if NeedVarargsPrototypes
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#include <stdarg.h>
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#endif
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#ifdef X_NOT_STDC_ENV
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extern int errno;
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#endif
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int silent = 0; /* -silent */
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int ignore_links = 0; /* -ignorelinks */
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char *rcurdir;
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char *curdir;
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void
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quit (
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#if NeedVarargsPrototypes
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int code, char * fmt, ...)
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#else
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code, fmt, a1, a2, a3)
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char *fmt;
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#endif
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{
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#if NeedVarargsPrototypes
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va_list args;
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va_start(args, fmt);
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vfprintf (stderr, fmt, args);
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va_end(args);
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#else
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fprintf (stderr, fmt, a1, a2, a3);
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#endif
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putc ('\n', stderr);
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exit (code);
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}
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void
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quiterr (code, s)
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char *s;
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{
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perror (s);
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exit (code);
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}
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void
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msg (
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#if NeedVarargsPrototypes
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char * fmt, ...)
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#else
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fmt, a1, a2, a3)
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char *fmt;
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#endif
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{
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#if NeedVarargsPrototypes
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va_list args;
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#endif
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if (curdir) {
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fprintf (stderr, "%s:\n", curdir);
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curdir = 0;
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}
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#if NeedVarargsPrototypes
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va_start(args, fmt);
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vfprintf (stderr, fmt, args);
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va_end(args);
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#else
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fprintf (stderr, fmt, a1, a2, a3);
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#endif
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putc ('\n', stderr);
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}
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void
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mperror (s)
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char *s;
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{
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if (curdir) {
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fprintf (stderr, "%s:\n", curdir);
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curdir = 0;
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}
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perror (s);
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}
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int equivalent(lname, rname)
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char *lname;
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char *rname;
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{
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char *s;
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if (!strcmp(lname, rname))
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return 1;
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for (s = lname; *s && (s = strchr(s, '/')); s++) {
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while (s[1] == '/')
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strcpy(s+1, s+2);
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}
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return !strcmp(lname, rname);
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}
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/* Recursively create symbolic links from the current directory to the "from"
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directory. Assumes that files described by fs and ts are directories. */
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dodir (fn, fs, ts, rel)
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char *fn; /* name of "from" directory, either absolute or
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relative to cwd */
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struct stat *fs, *ts; /* stats for the "from" directory and cwd */
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int rel; /* if true, prepend "../" to fn before using */
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{
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DIR *df;
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struct dirent *dp;
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char buf[MAXPATHLEN + 1], *p;
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char symbuf[MAXPATHLEN + 1];
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char basesym[MAXPATHLEN + 1];
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struct stat sb, sc;
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int n_dirs;
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int symlen;
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int basesymlen = -1;
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char *ocurdir;
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if ((fs->st_dev == ts->st_dev) && (fs->st_ino == ts->st_ino)) {
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msg ("%s: From and to directories are identical!", fn);
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return 1;
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}
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if (rel)
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strcpy (buf, "../");
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else
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buf[0] = '\0';
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strcat (buf, fn);
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if (!(df = opendir (buf))) {
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msg ("%s: Cannot opendir", buf);
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return 1;
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}
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p = buf + strlen (buf);
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*p++ = '/';
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n_dirs = fs->st_nlink;
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while (dp = readdir (df)) {
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if (dp->d_name[strlen(dp->d_name) - 1] == '~')
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continue;
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strcpy (p, dp->d_name);
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if (n_dirs > 0) {
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if (stat (buf, &sb) < 0) {
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mperror (buf);
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continue;
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}
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#ifdef S_ISDIR
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if(S_ISDIR(sb.st_mode))
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#else
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if (sb.st_mode & S_IFDIR)
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#endif
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{
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/* directory */
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n_dirs--;
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if (dp->d_name[0] == '.' &&
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(dp->d_name[1] == '\0' || (dp->d_name[1] == '.' &&
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dp->d_name[2] == '\0')))
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continue;
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if (!strcmp (dp->d_name, "RCS"))
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continue;
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if (!strcmp (dp->d_name, "SCCS"))
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continue;
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if (!strcmp (dp->d_name, "CVS"))
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continue;
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if (!strcmp (dp->d_name, "CVS.adm"))
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continue;
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ocurdir = rcurdir;
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rcurdir = buf;
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curdir = silent ? buf : (char *)0;
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if (!silent)
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printf ("%s:\n", buf);
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if ((stat (dp->d_name, &sc) < 0) && (errno == ENOENT)) {
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if (mkdir (dp->d_name, 0777) < 0 ||
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stat (dp->d_name, &sc) < 0) {
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mperror (dp->d_name);
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curdir = rcurdir = ocurdir;
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continue;
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}
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}
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if (readlink (dp->d_name, symbuf, sizeof(symbuf) - 1) >= 0) {
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msg ("%s: is a link instead of a directory", dp->d_name);
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curdir = rcurdir = ocurdir;
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continue;
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}
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if (chdir (dp->d_name) < 0) {
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mperror (dp->d_name);
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curdir = rcurdir = ocurdir;
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continue;
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}
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dodir (buf, &sb, &sc, (buf[0] != '/'));
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if (chdir ("..") < 0)
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quiterr (1, "..");
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curdir = rcurdir = ocurdir;
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continue;
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}
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}
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/* non-directory */
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symlen = readlink (dp->d_name, symbuf, sizeof(symbuf) - 1);
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if (symlen >= 0)
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symbuf[symlen] = '\0';
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/* The option to ignore links exists mostly because
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checking for them slows us down by 10-20%.
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But it is off by default because this really is a useful check. */
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if (!ignore_links) {
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/* see if the file in the base tree was a symlink */
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basesymlen = readlink(buf, basesym, sizeof(basesym) - 1);
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if (basesymlen >= 0)
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basesym[basesymlen] = '\0';
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}
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if (symlen >= 0) {
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/* Link exists in new tree. Print message if it doesn't match. */
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if (!equivalent (basesymlen>=0 ? basesym : buf, symbuf))
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msg ("%s: %s", dp->d_name, symbuf);
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} else {
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if (symlink (basesymlen>=0 ? basesym : buf, dp->d_name) < 0)
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mperror (dp->d_name);
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}
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}
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closedir (df);
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return 0;
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}
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main (ac, av)
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int ac;
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char **av;
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{
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char *prog_name = av[0];
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char *fn, *tn;
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struct stat fs, ts;
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while (++av, --ac) {
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if (strcmp(*av, "-silent") == 0)
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silent = 1;
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else if (strcmp(*av, "-ignorelinks") == 0)
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ignore_links = 1;
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else if (strcmp(*av, "--") == 0) {
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++av, --ac;
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break;
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}
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else
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break;
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}
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if (ac < 1 || ac > 2)
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quit (1, "usage: %s [-silent] [-ignorelinks] fromdir [todir]",
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prog_name);
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fn = av[0];
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if (ac == 2)
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tn = av[1];
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else
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tn = ".";
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/* to directory */
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if (stat (tn, &ts) < 0)
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quiterr (1, tn);
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#ifdef S_ISDIR
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if (!(S_ISDIR(ts.st_mode)))
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#else
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if (!(ts.st_mode & S_IFDIR))
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#endif
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quit (2, "%s: Not a directory", tn);
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if (chdir (tn) < 0)
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quiterr (1, tn);
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/* from directory */
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if (stat (fn, &fs) < 0)
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quiterr (1, fn);
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#ifdef S_ISDIR
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if (!(S_ISDIR(fs.st_mode)))
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#else
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if (!(fs.st_mode & S_IFDIR))
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#endif
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quit (2, "%s: Not a directory", fn);
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exit (dodir (fn, &fs, &ts, 0));
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}
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