rpm2cpio: handle bz2 too; code shrink

[oweals/busybox.git] / coreutils / env.c

diff --git a/coreutils/env.c b/coreutils/env.c
index b45cbcc7dc2f6b1eb817dcaf17e0de351e08ed87..f50a03e8b683b868f2fdf05d22f428208a3f52e8 100644 (file)
--- a/coreutils/env.c
+++ b/coreutils/env.c
@@ -29,8 +29,7 @@
  * - use xfunc_error_retval
  */
 
-#include <getopt.h> /* struct option */
-extern char **environ;
+/* This is a NOEXEC applet. Be very careful! */
 
 #include "libbb.h"
 
@@ -42,10 +41,8 @@ static const char env_longopts[] ALIGN1 =
 #endif
 
 int env_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int env_main(int argc, char **argv)
+int env_main(int argc UNUSED_PARAM, char **argv)
 {
-       /* cleanenv was static - why? */
-       char *cleanenv[1];
        char **ep;
        unsigned opt;
        llist_t *unset_env = NULL;
@@ -61,13 +58,16 @@ int env_main(int argc, char **argv)
                ++argv;
        }
        if (opt & 1) {
-               cleanenv[0] = NULL;
-               environ = cleanenv;
-       } else {
-               while (unset_env) {
-                       unsetenv(unset_env->data);
-                       unset_env = unset_env->link;
-               }
+               clearenv();
+       }
+       while (unset_env) {
+               char *var = llist_pop(&unset_env);
+               /* This does not handle -uVAR=VAL
+                * (coreutils _sets_ the variable in that case): */
+               /*unsetenv(var);*/
+               /* This does, but uses somewhan undocumented feature that
+                * putenv("name_without_equal_sign") unsets the variable: */
+               putenv(var);
        }
 
        while (*argv && (strchr(*argv, '=') != NULL)) {
@@ -88,7 +88,7 @@ int env_main(int argc, char **argv)
                puts(*ep);
        }
 
-       fflush_stdout_and_exit(0);
+       fflush_stdout_and_exit(EXIT_SUCCESS);
 }
 
 /*
@@ -123,5 +123,3 @@ int env_main(int argc, char **argv)
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
-
-