X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fwrap.c;h=a3d88810df6cf8468a68a872473960e24a36ffc6;hb=dc5e3163fe667e2629c7769aa8cf2e501eeeefa6;hp=1331e6de9c4adea3d9c0f9afb66d3b0d812aa6f5;hpb=21bb73db9c3f333ead8a848f863b957a6db5a5c9;p=sbcl.git

diff --git a/src/runtime/wrap.c b/src/runtime/wrap.c
index 1331e6d..a3d8881 100644
--- a/src/runtime/wrap.c
+++ b/src/runtime/wrap.c
@@ -30,11 +30,15 @@
 #include <string.h>
 #include <unistd.h>
 #include <pwd.h>
-
+#include <stdio.h>
 
 #include "runtime.h"
 #include "sbcl.h"
 #include "util.h"
+
+/* KLUDGE: Neither the OpenBSD nor the Linux man page give a header
+ * file to find this in (?). -- WHN 2002-02-07 */
+extern char **environ;
    
 /*
  * stuff needed by CL:DIRECTORY and other Lisp directory operations
@@ -122,7 +126,7 @@ wrapped_readlink(char *path)
     int bufsiz = strlen(path) + 16;
     while (1) {
 	char *result = malloc(bufsiz);
-	int n_read = readlink(path, result, n_read);
+	int n_read = readlink(path, result, bufsiz);
 	if (n_read < 0) {
 	    free(result);
 	    return 0;
@@ -250,3 +254,44 @@ uid_username(int uid)
 	return 0;
     }
 }
+
+char *
+uid_homedir(uid_t uid)
+{
+    struct passwd *p = getpwuid(uid);
+    if(p) {
+	/* Let's be careful about this, shall we? */
+	size_t len = strlen(p->pw_dir);
+	if (p->pw_dir[len-1] == '/') {
+	    return strdup(p->pw_dir);
+	} else {
+	    char *result = malloc(len + 2);
+	    if (result) {
+		int nchars = sprintf(result,"%s/",p->pw_dir);
+		if (nchars == len + 1) {
+		    return result;
+		} else {
+		    return 0;
+		}
+	    } else {
+		return 0;
+	    }
+	}
+    } else {
+	return 0;
+    }
+}
+
+/*
+ * functions to get miscellaneous C-level variables
+ *
+ * (Doing this by calling functions lets us borrow the smarts of the C
+ * linker, so that things don't blow up when libc versions and thus
+ * variable locations change between compile time and run time.)
+ */
+
+char **
+wrapped_environ()
+{
+    return environ;
+}