shells: testcase: add another test for EINTR on fifo open

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

4 files changed, 32 insertions, 0 deletions

diff --git a/shell/ash_test/ash-redir/redir_EINTR2.right b/shell/ash_test/ash-redir/redir_EINTR2.right
new file mode 100644
index 000000000..287d91f67
--- /dev/null
+++ b/shell/ash_test/ash-redir/redir_EINTR2.right
@@ -0,0 +1,2 @@
+Hello
+Done:0
diff --git a/shell/ash_test/ash-redir/redir_EINTR2.tests b/shell/ash_test/ash-redir/redir_EINTR2.tests
new file mode 100755
index 000000000..3d343c7ea
--- /dev/null
+++ b/shell/ash_test/ash-redir/redir_EINTR2.tests
@@ -0,0 +1,14 @@
+rm -f test.fifo
+mkfifo test.fifo
+
+(sleep 1; kill -chld $$) &
+(sleep 2; echo Hello >test.fifo) &
+
+# We get open("test.fifo") interrupted by SIGCHLD from the first subshell.
+# The shell MUST retry the open (no printing of error messages).
+# Then, the second subshell opens fifo for writing and open unblocks and succeeds.
+read HELLO <test.fifo
+echo "$HELLO"
+
+echo "Done:$?"
+rm -f test.fifo
diff --git a/shell/hush_test/hush-redir/redir_EINTR2.right b/shell/hush_test/hush-redir/redir_EINTR2.right
new file mode 100644
index 000000000..287d91f67
--- /dev/null
+++ b/shell/hush_test/hush-redir/redir_EINTR2.right
@@ -0,0 +1,2 @@
+Hello
+Done:0
diff --git a/shell/hush_test/hush-redir/redir_EINTR2.tests b/shell/hush_test/hush-redir/redir_EINTR2.tests
new file mode 100755
index 000000000..3d343c7ea
--- /dev/null
+++ b/shell/hush_test/hush-redir/redir_EINTR2.tests
@@ -0,0 +1,14 @@
+rm -f test.fifo
+mkfifo test.fifo
+
+(sleep 1; kill -chld $$) &
+(sleep 2; echo Hello >test.fifo) &
+
+# We get open("test.fifo") interrupted by SIGCHLD from the first subshell.
+# The shell MUST retry the open (no printing of error messages).
+# Then, the second subshell opens fifo for writing and open unblocks and succeeds.
+read HELLO <test.fifo
+echo "$HELLO"
+
+echo "Done:$?"
+rm -f test.fifo