0.9.9.35:

[sbcl.git] / src / runtime / bsd-os.c

diff --git a/src/runtime/bsd-os.c b/src/runtime/bsd-os.c
index 9b25e7b..7e9d51f 100644 (file)
--- a/src/runtime/bsd-os.c
+++ b/src/runtime/bsd-os.c
@@ -336,7 +336,41 @@ int arch_os_thread_cleanup(struct thread *thread) {
 }
 #endif
 
-#ifndef LISP_FEATURE_DARWIN   /* defined in ppc-darwin-os.c instead */
+#ifdef LISP_FEATURE_DARWIN
+/* defined in ppc-darwin-os.c instead */
+#elif defined(LISP_FEATURE_FREEBSD)
+char *
+os_get_runtime_executable_path()
+{
+    char path[PATH_MAX + 1];
+    /* Defined on FreeBSD 6 and later. -- JES, 2006-02-06. */
+#ifdef KERN_PROC_PATHNAME
+    size_t len = PATH_MAX + 1;
+    int mib[4];
+
+    mib[0] = CTL_KERN;
+    mib[1] = KERN_PROC;
+    mib[2] = KERN_PROC_PATHNAME;
+    mib[3] = -1;
+    if (sysctl(mib, 4, &path, &len, NULL, 0) != 0)
+        /* FIXME: Should we rather fall back into the /proc/-based
+         * code below, so that an SBCL executable core made on
+         * FreeBSD 6 would have at least some chance of working on
+         * FreeBSD 4? -- JES, 2006-02-06.
+         */
+        return NULL;
+#else
+    int size;
+    size = readlink("/proc/curproc/file", path, sizeof(path) - 1);
+    if (size < 0)
+        return NULL;
+    path[size] = '\0';
+    if (strcmp(path, "unknown") == 0)
+        return NULL;
+#endif
+    return copied_string(path);
+}
+#else /* Not DARWIN or FREEBSD */
 char *
 os_get_runtime_executable_path()
 {