sv,svc: fix NOEXEC fallout

function                                             old     new   delta
svc_main                                             145     162     +17
sv                                                  1280    1297     +17
status                                               139     133      -6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 34/-6)              Total: 28 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 3 insertions, 16 deletions

diff --git a/console-tools/dumpkmap.c b/console-tools/dumpkmap.c
index 5ffb0cddb..b803e579a 100644
--- a/console-tools/dumpkmap.c
+++ b/console-tools/dumpkmap.c
@@ -16,6 +16,7 @@
 //config:       stdout, in binary format. You can then use loadkmap to load it.
 
 //applet:IF_DUMPKMAP(APPLET_NOEXEC(dumpkmap, dumpkmap, BB_DIR_BIN, BB_SUID_DROP, dumpkmap))
+/* bb_common_bufsiz1 usage here is safe wrt NOEXEC: not expecting it to be zeroed. */
 
 //kbuild:lib-$(CONFIG_DUMPKMAP) += dumpkmap.o
 
@@ -47,8 +48,6 @@ int dumpkmap_main(int argc UNUSED_PARAM, char **argv)
 {
         struct kbentry ke;
         int i, j, fd;
-#define flags bb_common_bufsiz1
-        setup_common_bufsiz();
 
         /* When user accidentally runs "dumpkmap FILE"
          * instead of "dumpkmap >FILE", we'd dump binary stuff to tty.
@@ -60,19 +59,8 @@ int dumpkmap_main(int argc UNUSED_PARAM, char **argv)
 
         fd = get_console_fd_or_die();
 
-#if 0
-        write(STDOUT_FILENO, "bkeymap", 7);
-        /* Here we want to set everything to 0 except for indexes:
-         * [0-2] [4-6] [8-10] [12]
-         */
-        /*memset(flags, 0x00, MAX_NR_KEYMAPS); - already is */
-        memset(flags, 0x01, 13);
-        flags[3] = flags[7] = flags[11] = 0;
-        /* dump flags */
-        write(STDOUT_FILENO, flags, MAX_NR_KEYMAPS);
-#define flags7 flags
-#else
-        /* Same effect */
+#define flags bb_common_bufsiz1
+        setup_common_bufsiz();
         /*                     0 1 2 3 4 5 6 7 8 9 a b c=12 */
         memcpy(flags, "bkeymap\1\1\1\0\1\1\1\0\1\1\1\0\1",
         /* Can use sizeof, or sizeof-1. sizeof is even, using that */
@@ -80,7 +68,6 @@ int dumpkmap_main(int argc UNUSED_PARAM, char **argv)
         );
         write(STDOUT_FILENO, flags, 7 + MAX_NR_KEYMAPS);
 #define flags7 (flags + 7)
-#endif
 
         for (i = 0; i < 13; i++) {
                 if (flags7[i]) {