hush: fix this case: echo "SCRIPT" | hush

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

5 files changed, 15 insertions, 1 deletions

diff --git a/shell/ash_test/ash-misc/piped_input.right b/shell/ash_test/ash-misc/piped_input.right
new file mode 100644
index 000000000..7b8bf6758
--- /dev/null
+++ b/shell/ash_test/ash-misc/piped_input.right
@@ -0,0 +1,2 @@
+TEST
+One:1
diff --git a/shell/ash_test/ash-misc/piped_input.tests b/shell/ash_test/ash-misc/piped_input.tests
new file mode 100755
index 000000000..ec7e49837
--- /dev/null
+++ b/shell/ash_test/ash-misc/piped_input.tests
@@ -0,0 +1,3 @@
+exed 2>&1
+echo 'echo TEST; false' | $THIS_SH
+echo One:$?
diff --git a/shell/hush.c b/shell/hush.c
index 3bdbe26d8..f9a295e8d 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -7787,7 +7787,11 @@ static void restore_redirects(struct squirrel *sq)
                 free(sq);
         }
         if (G.HFILE_stdin
-         && G.HFILE_stdin->fd != STDIN_FILENO
+         && G.HFILE_stdin->fd > STDIN_FILENO
+        /* we compare > STDIN, not == STDIN, since hfgetc()
+         * closes fd and sets ->fd to -1 if EOF is reached.
+         * Testcase: echo 'pwd' | hush
+         */
         ) {
                 /* Testcase: interactive "read r <FILE; echo $r; read r; echo $r".
                  * Redirect moves ->fd to e.g. 10,
diff --git a/shell/hush_test/hush-misc/piped_input.right b/shell/hush_test/hush-misc/piped_input.right
new file mode 100644
index 000000000..7b8bf6758
--- /dev/null
+++ b/shell/hush_test/hush-misc/piped_input.right
@@ -0,0 +1,2 @@
+TEST
+One:1
diff --git a/shell/hush_test/hush-misc/piped_input.tests b/shell/hush_test/hush-misc/piped_input.tests
new file mode 100755
index 000000000..ec7e49837
--- /dev/null
+++ b/shell/hush_test/hush-misc/piped_input.tests
@@ -0,0 +1,3 @@
+exed 2>&1
+echo 'echo TEST; false' | $THIS_SH
+echo One:$?