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Diffstat (limited to 'libexec/ld.so/ldconfig/shlib.c')
-rw-r--r--libexec/ld.so/ldconfig/shlib.c305
1 files changed, 305 insertions, 0 deletions
diff --git a/libexec/ld.so/ldconfig/shlib.c b/libexec/ld.so/ldconfig/shlib.c
new file mode 100644
index 00000000000..925c6c7491f
--- /dev/null
+++ b/libexec/ld.so/ldconfig/shlib.c
@@ -0,0 +1,305 @@
+/* $OpenBSD: shlib.c,v 1.1 2000/06/13 03:40:21 rahnds Exp $ */
+/* $NetBSD: shlib.c,v 1.13 1998/04/04 01:00:29 fvdl Exp $ */
+
+/*
+ * Copyright (c) 1993 Paul Kranenburg
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Paul Kranenburg.
+ * 4. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifdef sun
+char *strsep();
+int isdigit();
+#endif
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/file.h>
+#include <sys/time.h>
+#include <ranlib.h>
+#include <a.out.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <err.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "ld.h"
+
+/*
+ * Standard directories to search for files specified by -l.
+ */
+#ifndef STANDARD_SEARCH_DIRS
+#define STANDARD_SEARCH_DIRS "/usr/lib"
+#endif
+
+/*
+ * Actual vector of library search directories,
+ * including `-L'ed and LD_LIBRARY_PATH spec'd ones.
+ */
+char **search_dirs;
+int n_search_dirs;
+
+char *standard_search_dirs[] = {
+ STANDARD_SEARCH_DIRS
+};
+
+
+void
+add_search_dir(name)
+ char *name;
+{
+ n_search_dirs++;
+ search_dirs = (char **)
+ xrealloc(search_dirs, n_search_dirs * sizeof search_dirs[0]);
+ search_dirs[n_search_dirs - 1] = strdup(name);
+}
+
+void
+remove_search_dir(name)
+ char *name;
+{
+ int n;
+
+ for (n = 0; n < n_search_dirs; n++) {
+ if (strcmp(search_dirs[n], name))
+ continue;
+ free(search_dirs[n]);
+ if (n < (n_search_dirs - 1))
+ bcopy(&search_dirs[n+1], &search_dirs[n],
+ (n_search_dirs - n - 1) * sizeof search_dirs[0]);
+ n_search_dirs--;
+ }
+}
+
+void
+add_search_path(path)
+char *path;
+{
+ register char *cp, *dup;
+
+ if (path == NULL)
+ return;
+
+ /* Add search directories from `path' */
+ path = dup = strdup(path);
+ while ((cp = strsep(&path, ":")) != NULL)
+ add_search_dir(cp);
+ free(dup);
+}
+
+void
+remove_search_path(path)
+char *path;
+{
+ register char *cp, *dup;
+
+ if (path == NULL)
+ return;
+
+ /* Remove search directories from `path' */
+ path = dup = strdup(path);
+ while ((cp = strsep(&path, ":")) != NULL)
+ remove_search_dir(cp);
+ free(dup);
+}
+
+void
+std_search_path()
+{
+ int i, n;
+
+ /* Append standard search directories */
+ n = sizeof standard_search_dirs / sizeof standard_search_dirs[0];
+ for (i = 0; i < n; i++)
+ add_search_dir(standard_search_dirs[i]);
+}
+
+/*
+ * Return true if CP points to a valid dewey number.
+ * Decode and leave the result in the array DEWEY.
+ * Return the number of decoded entries in DEWEY.
+ */
+
+int
+getdewey(dewey, cp)
+int dewey[];
+char *cp;
+{
+ int i, n;
+
+ for (n = 0, i = 0; i < MAXDEWEY; i++) {
+ if (*cp == '\0')
+ break;
+
+ if (*cp == '.') cp++;
+#ifdef SUNOS_LIB_COMPAT
+ if (!(isdigit)(*cp))
+#else
+ if (!isdigit(*cp))
+#endif
+ return 0;
+
+ dewey[n++] = strtol(cp, &cp, 10);
+ }
+
+ return n;
+}
+
+/*
+ * Compare two dewey arrays.
+ * Return -1 if `d1' represents a smaller value than `d2'.
+ * Return 1 if `d1' represents a greater value than `d2'.
+ * Return 0 if equal.
+ */
+int
+cmpndewey(d1, n1, d2, n2)
+int d1[], d2[];
+int n1, n2;
+{
+ register int i;
+
+ for (i = 0; i < n1 && i < n2; i++) {
+ if (d1[i] < d2[i])
+ return -1;
+ if (d1[i] > d2[i])
+ return 1;
+ }
+
+ if (n1 == n2)
+ return 0;
+
+ if (i == n1)
+ return -1;
+
+ if (i == n2)
+ return 1;
+
+ errx(1, "cmpndewey: cant happen");
+ return 0;
+}
+
+/*
+ * Search directories for a shared library matching the given
+ * major and minor version numbers.
+ *
+ * MAJOR == -1 && MINOR == -1 --> find highest version
+ * MAJOR != -1 && MINOR == -1 --> find highest minor version
+ * MAJOR == -1 && MINOR != -1 --> invalid
+ * MAJOR != -1 && MINOR != -1 --> find highest micro version
+ */
+
+/* Not interested in devices right now... */
+#undef major
+#undef minor
+
+char *
+findshlib(name, majorp, minorp, do_dot_a)
+char *name;
+int *majorp, *minorp;
+int do_dot_a;
+{
+ int dewey[MAXDEWEY];
+ int ndewey;
+ int tmp[MAXDEWEY];
+ int i;
+ int len;
+ char *lname;
+ int major = *majorp, minor = *minorp;
+
+ len = strlen(name);
+ lname = (char *)alloca(len + sizeof("lib"));
+ sprintf(lname, "lib%s", name);
+ len += 3;
+
+ ndewey = 0;
+
+ for (i = 0; i < n_search_dirs; i++) {
+ DIR *dd = opendir(search_dirs[i]);
+ struct dirent *dp;
+ char *path = NULL;
+
+ if (dd == NULL)
+ continue;
+
+ while ((dp = readdir(dd)) != NULL) {
+ int n;
+
+ if (do_dot_a && path == NULL &&
+ dp->d_namlen == len + 2 &&
+ strncmp(dp->d_name, lname, len) == 0 &&
+ (dp->d_name+len)[0] == '.' &&
+ (dp->d_name+len)[1] == 'a') {
+
+ path = concat(search_dirs[i], "/", dp->d_name);
+ }
+
+ if (dp->d_namlen < len + 4)
+ continue;
+ if (strncmp(dp->d_name, lname, len) != 0)
+ continue;
+ if (strncmp(dp->d_name+len, ".so.", 4) != 0)
+ continue;
+
+ if ((n = getdewey(tmp, dp->d_name+len+4)) == 0)
+ continue;
+
+ /* skip inappropriate versions. */
+ if (major != -1) {
+ if (tmp[0] != major)
+ continue;
+ if (n != 1 && minor != -1 && tmp[1] < minor)
+ continue;
+ }
+
+ if (cmpndewey(tmp, n, dewey, ndewey) <= 0)
+ continue;
+
+ /* We have a better version */
+ if (path)
+ free(path);
+ path = concat(search_dirs[i], "/", dp->d_name);
+ bcopy(tmp, dewey, sizeof(dewey));
+ ndewey = n;
+ *majorp = dewey[0];
+ *minorp = dewey[1];
+ }
+ closedir(dd);
+
+ if (path != NULL)
+ /*
+ * There's a lib in this dir; take it.
+ */
+ return path;
+ }
+
+ return NULL;
+}
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