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-rw-r--r--libexec/rtld-aout/shlib.c340
-rw-r--r--libexec/rtld-aout/shlib.h43
-rw-r--r--libexec/rtld-aout/support.c86
-rw-r--r--libexec/rtld-aout/support.h35
4 files changed, 504 insertions, 0 deletions
diff --git a/libexec/rtld-aout/shlib.c b/libexec/rtld-aout/shlib.c
new file mode 100644
index 0000000..9fd2c66
--- /dev/null
+++ b/libexec/rtld-aout/shlib.c
@@ -0,0 +1,340 @@
+/*
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/file.h>
+#include <sys/time.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 <sys/link_aout.h>
+#include "shlib.h"
+#include "support.h"
+
+/*
+ * Standard directories to search for files specified by -l.
+ */
+#ifndef STANDARD_SEARCH_DIRS
+#define STANDARD_SEARCH_DIRS "/usr/lib/aout"
+#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;
+{
+ int n;
+
+ for (n = 0; n < n_search_dirs; n++)
+ if (strcmp(search_dirs[n], name) == 0)
+ return;
+ 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
+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
+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++;
+ if (!isdigit(*cp))
+ 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. See search_lib_dir() below for
+ * the detailed matching rules.
+ *
+ * As soon as a directory with an acceptable match is found, the search
+ * terminates. Subsequent directories are not searched for a better
+ * match. This is in conformance with the SunOS searching rules. Also,
+ * it avoids a lot of directory searches that are virtually guaranteed to
+ * be fruitless.
+ *
+ * The return value is a full pathname to the matching library. The
+ * string is dynamically allocated. If no matching library is found, the
+ * function returns NULL.
+ */
+
+char *
+findshlib(name, majorp, minorp, do_dot_a)
+char *name;
+int *majorp, *minorp;
+int do_dot_a;
+{
+ int i;
+
+ for (i = 0; i < n_search_dirs; i++) {
+ char *path;
+
+ path = search_lib_dir(search_dirs[i], name, majorp, minorp,
+ do_dot_a);
+ if(path != NULL)
+ return path;
+ }
+
+ return NULL;
+}
+
+/*
+ * Search library directories for a file with the given name. The
+ * return value is a full pathname to the matching file. The string
+ * is dynamically allocated. If no matching file is found, the function
+ * returns NULL.
+ */
+
+char *
+find_lib_file(name)
+ const char *name;
+{
+ int i;
+
+ for (i = 0; i < n_search_dirs; i++) {
+ char *path = concat(search_dirs[i], "/", name);
+ struct stat sb;
+
+ if (lstat(path, &sb) != -1) /* We found it */
+ return path;
+
+ free(path);
+ }
+
+ return NULL;
+}
+
+/*
+ * Search a given directory for a library (preferably shared) satisfying
+ * the given criteria.
+ *
+ * The matching rules are as follows:
+ *
+ * if(*majorp == -1)
+ * find the library with the highest major version;
+ * else
+ * insist on a major version identical to *majorp;
+ *
+ * Always find the library with the highest minor version;
+ * if(*minorp != -1)
+ * insist on a minor version >= *minorp;
+ *
+ * It is invalid to specify a specific minor number while wildcarding
+ * the major number.
+ *
+ * The actual major and minor numbers found are returned via the pointer
+ * arguments.
+ *
+ * A suitable shared library is always preferred over a static (.a) library.
+ * If do_dot_a is false, then a static library will not be accepted in
+ * any case.
+ *
+ * The return value is a full pathname to the matching library. The
+ * string is dynamically allocated. If no matching library is found, the
+ * function returns NULL.
+ */
+
+char *
+search_lib_dir(dir, name, majorp, minorp, do_dot_a)
+ char *dir;
+ char *name;
+ int *majorp;
+ int *minorp;
+ int do_dot_a;
+{
+ int namelen;
+ DIR *dd;
+ struct dirent *dp;
+ int best_dewey[MAXDEWEY];
+ int best_ndewey;
+ char dot_a_name[MAXNAMLEN+1];
+ char dot_so_name[MAXNAMLEN+1];
+
+ if((dd = opendir(dir)) == NULL)
+ return NULL;
+
+ namelen = strlen(name);
+ best_ndewey = 0;
+ dot_a_name[0] = '\0';
+ dot_so_name[0] = '\0';
+
+ while((dp = readdir(dd)) != NULL) {
+ char *extension;
+
+ if(strlen(dp->d_name) < 3 + namelen + 2 || /* lib+xxx+.a */
+ strncmp(dp->d_name, "lib", 3) != 0 ||
+ strncmp(dp->d_name + 3, name, namelen) != 0 ||
+ dp->d_name[3+namelen] != '.')
+ continue;
+
+ extension = dp->d_name + 3 + namelen + 1; /* a or so.* */
+
+ if(strncmp(extension, "so.", 3) == 0) {
+ int cur_dewey[MAXDEWEY];
+ int cur_ndewey;
+
+ cur_ndewey = getdewey(cur_dewey, extension+3);
+ if(cur_ndewey < 2) /* Too few version numbers */
+ continue;
+
+ if(*majorp != -1) { /* Need exact match on major */
+ if(cur_dewey[0] != *majorp)
+ continue;
+ if(*minorp != -1) { /* Need minor >= minimum */
+ if(cur_dewey[1] < *minorp)
+ continue;
+ }
+ }
+
+ if(cmpndewey(cur_dewey, cur_ndewey, best_dewey,
+ best_ndewey) <= 0) /* No better than prior match */
+ continue;
+
+ /* We found a better match */
+ strcpy(dot_so_name, dp->d_name);
+ bcopy(cur_dewey, best_dewey,
+ cur_ndewey * sizeof best_dewey[0]);
+ best_ndewey = cur_ndewey;
+ } else if(do_dot_a && strcmp(extension, "a") == 0)
+ strcpy(dot_a_name, dp->d_name);
+ }
+ closedir(dd);
+
+ if(dot_so_name[0] != '\0') {
+ *majorp = best_dewey[0];
+ *minorp = best_dewey[1];
+ return concat(dir, "/", dot_so_name);
+ }
+
+ if(dot_a_name[0] != '\0')
+ return concat(dir, "/", dot_a_name);
+
+ return NULL;
+}
diff --git a/libexec/rtld-aout/shlib.h b/libexec/rtld-aout/shlib.h
new file mode 100644
index 0000000..d05690f
--- /dev/null
+++ b/libexec/rtld-aout/shlib.h
@@ -0,0 +1,43 @@
+/*-
+ * Copyright (C) 1996
+ * Peter Wemm. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
+ *-
+ * $FreeBSD$
+ */
+
+/*
+ * prototypes for shlib.c. Big deal.
+ */
+
+extern char **search_dirs;
+extern int n_search_dirs;
+
+void add_search_dir __P((char *));
+void add_search_path __P((char *));
+void std_search_path __P((void));
+int getdewey __P((int[], char *));
+int cmpndewey __P((int[], int, int[], int));
+char *findshlib __P((char *, int *, int *, int));
+char *find_lib_file __P((const char *));
+char *search_lib_dir __P((char *, char *, int *, int *, int));
diff --git a/libexec/rtld-aout/support.c b/libexec/rtld-aout/support.c
new file mode 100644
index 0000000..71a84ff
--- /dev/null
+++ b/libexec/rtld-aout/support.c
@@ -0,0 +1,86 @@
+/*
+ * Generic "support" routines to replace those obtained from libiberty for ld.
+ *
+ * I've collected these from random bits of (published) code I've written
+ * over the years, not that they are a big deal. peter@freebsd.org
+ *-
+ * Copyright (C) 1996
+ * Peter Wemm. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
+ *-
+ * $FreeBSD$
+ */
+#include <sys/types.h>
+#include <string.h>
+#include <stdlib.h>
+#include <err.h>
+
+#include "support.h"
+
+char *
+concat(s1, s2, s3)
+ const char *s1, *s2, *s3;
+{
+ int len = 1;
+ char *s;
+ if (s1)
+ len += strlen(s1);
+ if (s2)
+ len += strlen(s2);
+ if (s3)
+ len += strlen(s3);
+ s = xmalloc(len);
+ s[0] = '\0';
+ if (s1)
+ strcat(s, s1);
+ if (s2)
+ strcat(s, s2);
+ if (s3)
+ strcat(s, s3);
+ return s;
+}
+
+void *
+xmalloc(n)
+ size_t n;
+{
+ char *p = malloc(n);
+
+ if (p == NULL)
+ errx(1, "Could not allocate memory");
+
+ return p;
+}
+
+void *
+xrealloc(p, n)
+ void *p;
+ size_t n;
+{
+ p = realloc(p, n);
+
+ if (p == NULL)
+ errx(1, "Could not allocate memory");
+
+ return p;
+}
diff --git a/libexec/rtld-aout/support.h b/libexec/rtld-aout/support.h
new file mode 100644
index 0000000..da03407
--- /dev/null
+++ b/libexec/rtld-aout/support.h
@@ -0,0 +1,35 @@
+/*-
+ * Copyright (C) 1996
+ * Peter Wemm. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
+ *-
+ * $FreeBSD$
+ */
+
+/*
+ * prototypes for support.c. Big deal.
+ */
+
+void *xmalloc __P((size_t));
+void *xrealloc __P((void *, size_t));
+char *concat __P((const char *, const char *, const char *));
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