hush (NOMMU): fix LINENO in execed children

function                                             old     new   delta
hush_main                                           1815    1851     +36
re_execute_shell                                     601     635     +34
.rodata                                           102721  102726      +5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 75/0)               Total: 75 bytes

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

1 files changed, 15 insertions, 0 deletions

diff --git a/shell/hush.c b/shell/hush.c
index 170edf415..a938cc790 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -7468,6 +7468,9 @@ static void re_execute_shell(char ***to_free, const char *s,
                 if (!cur->flg_export || cur->flg_read_only)
                         cnt += 2;
         }
+# if ENABLE_HUSH_LINENO_VAR
+        cnt += 2;
+# endif
 # if ENABLE_HUSH_FUNCTIONS
         for (funcp = G.top_func; funcp; funcp = funcp->next)
                 cnt += 3;
@@ -7489,6 +7492,10 @@ static void re_execute_shell(char ***to_free, const char *s,
                         *pp++ = cur->varstr;
                 }
         }
+# if ENABLE_HUSH_LINENO_VAR
+        *pp++ = (char *) "-L";
+        *pp++ = utoa(G.execute_lineno);
+# endif
 # if ENABLE_HUSH_FUNCTIONS
         for (funcp = G.top_func; funcp; funcp = funcp->next) {
                 *pp++ = (char *) "-F";
@@ -10400,6 +10407,9 @@ int hush_main(int argc, char **argv)
                                 "cexinsl"
 #if !BB_MMU
                                 "$:R:V:"
+# if ENABLE_HUSH_LINENO_VAR
+                                "L:"
+# endif
 # if ENABLE_HUSH_FUNCTIONS
                                 "F:"
 # endif
@@ -10498,6 +10508,11 @@ int hush_main(int argc, char **argv)
                 case 'V':
                         set_local_var(xstrdup(optarg), opt == 'R' ? SETFLAG_MAKE_RO : 0);
                         break;
+# if ENABLE_HUSH_LINENO_VAR
+                case 'L':
+                        G.parse_lineno = xatou(optarg);
+                        break;
+# endif
 # if ENABLE_HUSH_FUNCTIONS
                 case 'F': {
                         struct function *funcp = new_function(optarg);