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Don't reset $PATH to /bin:/usr/bin. This is consistent with `su' in
coreutils and important on NixOS.
diff -ru -x '*~' shadow-4.1.4.2-orig/src/su.c shadow-4.1.4.2/src/su.c
--- shadow-4.1.4.2-orig/src/su.c 2009-07-23 22:38:56.000000000 +0200
+++ shadow-4.1.4.2/src/su.c 2010-06-04 13:23:11.000000000 +0200
@@ -827,6 +827,7 @@
(void) signal (SIGINT, SIG_DFL);
(void) signal (SIGQUIT, SIG_DFL);
+#if 0
cp = getdef_str ((pwent.pw_uid == 0) ? "ENV_SUPATH" : "ENV_PATH");
if (NULL == cp) {
addenv ("PATH=/bin:/usr/bin", NULL);
@@ -835,6 +836,7 @@
} else {
addenv ("PATH", cp);
}
+#endif
if (getenv ("IFS") != NULL) { /* don't export user IFS ... */
addenv ("IFS= \t\n", NULL); /* ... instead, set a safe IFS */
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