hush: use ash's ulimit builtin; make it more more bash0like while at it

Based on a patch by Tobias Klauser <tklauser@distanz.ch>

function                                             old     new   delta
shell_builtin_ulimit                                   -     498    +498
limits_tbl                                            33      88     +55
ulimit_opt_string                                      -      38     +38
bltins1                                              288     300     +12
limits_name                                          127       -    -127
ulimitcmd                                            415       7    -408
------------------------------------------------------------------------------
(add/remove: 3/1 grow/shrink: 2/1 up/down: 603/-535)           Total: 68 bytes
   text    data     bss     dec     hex filename
 839229     453    6828  846510   ceaae busybox_old
 839423     453    6828  846704   ceb70 busybox_unstripped

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

1 files changed, 2 insertions, 2 deletions

diff --git a/shell/hush.c b/shell/hush.c
index 0310b02ed..6f391b881 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -57,7 +57,6 @@
  *
  * TODOs:
  *      grep for "TODO" and fix (some of them are easy)
- *      builtins: ulimit
  *      special variables (done: PWD)
  *      follow IFS rules more precisely, including update semantics
  *      export builtin should be special, its arguments are assignments
@@ -87,6 +86,7 @@
 
 #include "shell_common.h"
 #include "builtin_read.h"
+#include "builtin_ulimit.h"
 #include "math.h"
 #include "match.h"
 #if ENABLE_HUSH_RANDOM_SUPPORT
@@ -671,7 +671,7 @@ static const struct built_in_command bltins1[] = {
         BLTIN("shift"    , builtin_shift   , "Shift positional parameters"),
         BLTIN("trap"     , builtin_trap    , "Trap signals"),
         BLTIN("type"     , builtin_type    , "Write a description of command type"),
-//      BLTIN("ulimit"   , builtin_ulimit  , "Control resource limits"),
+        BLTIN("ulimit"   , shell_builtin_ulimit  , "Control resource limits"),
         BLTIN("umask"    , builtin_umask   , "Set file creation mask"),
         BLTIN("unset"    , builtin_unset   , "Unset variables"),
         BLTIN("wait"     , builtin_wait    , "Wait for process"),