147 lines
4.2 KiB
Diff
147 lines
4.2 KiB
Diff
From d2e4d2a38e4e7bc3ca407607e717b7f50b20c63f Mon Sep 17 00:00:00 2001
|
||
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
|
||
Date: Wed, 2 Feb 2022 18:31:59 -0300
|
||
Subject: [PATCH 02/13] posix: Fix tst-spawn6 terminal handling (BZ #28853)
|
||
|
||
The test changes the current foreground process group, which might
|
||
break testing depending of how the make check is issued. For instance:
|
||
|
||
nohup make -j1 test t=posix/tst-spawn6 | less
|
||
|
||
Will set 'make' and 'less' to be in the foreground process group in
|
||
the current session. When tst-spawn6 new child takes over it becomes
|
||
the foreground process and 'less' is stopped and backgrounded which
|
||
interrupts the 'make check' command.
|
||
|
||
To fix it a pseudo-terminal is allocated, the test starts in new
|
||
session (so there is no controlling terminal associated), and the
|
||
pseudo-terminal is set as the controlling one (similar to what
|
||
login_tty does).
|
||
|
||
Checked on x86_64-linux-gnu.
|
||
|
||
Tested-by: Carlos O'Donell <carlos@redhat.com>
|
||
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
|
||
|
||
(cherry picked from a9d35765728cbc5b66af5eeda5428298bccf9b69)
|
||
---
|
||
NEWS | 8 ++++++
|
||
posix/tst-spawn6.c | 62 ++++++++++++++++++++++++++++++++++++++--------
|
||
2 files changed, 59 insertions(+), 11 deletions(-)
|
||
|
||
diff --git a/NEWS b/NEWS
|
||
index faa7ec1871..b1aae94cfb 100644
|
||
--- a/NEWS
|
||
+++ b/NEWS
|
||
@@ -4,6 +4,14 @@ See the end for copying conditions.
|
||
|
||
Please send GNU C library bug reports via <https://sourceware.org/bugzilla/>
|
||
using `glibc' in the "product" field.
|
||
+
|
||
+Version 2.35.1
|
||
+
|
||
+The following bugs are resolved with this release:
|
||
+
|
||
+ [28853] libc: tst-spawn6 changes current foreground process group
|
||
+ (breaks test isolation)
|
||
+
|
||
|
||
Version 2.35
|
||
|
||
diff --git a/posix/tst-spawn6.c b/posix/tst-spawn6.c
|
||
index 911e90a461..044abd8535 100644
|
||
--- a/posix/tst-spawn6.c
|
||
+++ b/posix/tst-spawn6.c
|
||
@@ -29,7 +29,14 @@
|
||
#include <support/check.h>
|
||
#include <support/xunistd.h>
|
||
#include <sys/wait.h>
|
||
+#include <sys/ioctl.h>
|
||
#include <stdlib.h>
|
||
+#include <termios.h>
|
||
+
|
||
+#ifndef PATH_MAX
|
||
+# define PATH_MAX 1024
|
||
+#endif
|
||
+static char ptmxpath[PATH_MAX];
|
||
|
||
static int
|
||
handle_restart (const char *argv1, const char *argv2)
|
||
@@ -115,7 +122,7 @@ run_subprogram (int argc, char *argv[], const posix_spawnattr_t *attr,
|
||
}
|
||
|
||
static int
|
||
-do_test (int argc, char *argv[])
|
||
+run_test (int argc, char *argv[])
|
||
{
|
||
/* We must have either:
|
||
- four parameters left if called initially:
|
||
@@ -127,16 +134,7 @@ do_test (int argc, char *argv[])
|
||
+ --setgrpr optional
|
||
*/
|
||
|
||
- if (restart)
|
||
- return handle_restart (argv[1], argv[2]);
|
||
-
|
||
- int tcfd = open64 (_PATH_TTY, O_RDONLY, 0600);
|
||
- if (tcfd == -1)
|
||
- {
|
||
- if (errno == ENXIO)
|
||
- FAIL_UNSUPPORTED ("terminal not available, skipping test");
|
||
- FAIL_EXIT1 ("open64 (\"%s\", 0x%x, 0600): %m", _PATH_TTY, O_RDONLY);
|
||
- }
|
||
+ int tcfd = xopen (ptmxpath, O_RDONLY, 0600);
|
||
|
||
/* Check setting the controlling terminal without changing the group. */
|
||
{
|
||
@@ -198,5 +196,47 @@ do_test (int argc, char *argv[])
|
||
return 0;
|
||
}
|
||
|
||
+static int
|
||
+do_test (int argc, char *argv[])
|
||
+{
|
||
+ if (restart)
|
||
+ return handle_restart (argv[1], argv[2]);
|
||
+
|
||
+ pid_t pid = xfork ();
|
||
+ if (pid == 0)
|
||
+ {
|
||
+ /* Create a pseudo-terminal to avoid interfering with the one using by
|
||
+ test itself, creates a new session (so there is no controlling
|
||
+ terminal), and set the pseudo-terminal as the controlling one. */
|
||
+ int ptmx = posix_openpt (0);
|
||
+ if (ptmx == -1)
|
||
+ {
|
||
+ if (errno == ENXIO)
|
||
+ FAIL_UNSUPPORTED ("terminal not available, skipping test");
|
||
+ FAIL_EXIT1 ("posix_openpt (0): %m");
|
||
+ }
|
||
+ TEST_VERIFY_EXIT (grantpt (ptmx) == 0);
|
||
+ TEST_VERIFY_EXIT (unlockpt (ptmx) == 0);
|
||
+
|
||
+ TEST_VERIFY_EXIT (setsid () != -1);
|
||
+ TEST_VERIFY_EXIT (ioctl (ptmx, TIOCSCTTY, NULL) == 0);
|
||
+ while (dup2 (ptmx, STDIN_FILENO) == -1 && errno == EBUSY)
|
||
+ ;
|
||
+ while (dup2 (ptmx, STDOUT_FILENO) == -1 && errno == EBUSY)
|
||
+ ;
|
||
+ while (dup2 (ptmx, STDERR_FILENO) == -1 && errno == EBUSY)
|
||
+ ;
|
||
+ TEST_VERIFY_EXIT (ptsname_r (ptmx, ptmxpath, sizeof ptmxpath) == 0);
|
||
+ xclose (ptmx);
|
||
+
|
||
+ run_test (argc, argv);
|
||
+ _exit (0);
|
||
+ }
|
||
+ int status;
|
||
+ xwaitpid (pid, &status, 0);
|
||
+ TEST_VERIFY (WIFEXITED (status));
|
||
+ exit (0);
|
||
+}
|
||
+
|
||
#define TEST_FUNCTION_ARGV do_test
|
||
#include <support/test-driver.c>
|
||
--
|
||
2.29.2
|
||
|