forked from rpms/glibc
fb633eaa14
remaining patches into distinct patchfiles. Thanks to
Dmitry V. Levin for identifying them!
Drop ia64 specific patches and specfile fragments
49 lines
1.7 KiB
Diff
49 lines
1.7 KiB
Diff
diff -Nrup a/sysdeps/unix/sysv/linux/tcsetattr.c b/sysdeps/unix/sysv/linux/tcsetattr.c
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--- a/sysdeps/unix/sysv/linux/tcsetattr.c 2012-06-05 07:42:49.000000000 -0600
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+++ b/sysdeps/unix/sysv/linux/tcsetattr.c 2012-06-07 12:15:21.831318623 -0600
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@@ -48,6 +48,7 @@ tcsetattr (fd, optional_actions, termios
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{
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struct __kernel_termios k_termios;
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unsigned long int cmd;
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+ int retval;
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switch (optional_actions)
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{
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@@ -79,6 +80,35 @@ tcsetattr (fd, optional_actions, termios
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memcpy (&k_termios.c_cc[0], &termios_p->c_cc[0],
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__KERNEL_NCCS * sizeof (cc_t));
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- return INLINE_SYSCALL (ioctl, 3, fd, cmd, &k_termios);
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+ retval = INLINE_SYSCALL (ioctl, 3, fd, cmd, &k_termios);
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+
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+ if (retval == 0 && cmd == TCSETS)
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+ {
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+ /* The Linux kernel has a bug which silently ignore the invalid
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+ c_cflag on pty. We have to check it here. */
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+ int save = errno;
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+ retval = INLINE_SYSCALL (ioctl, 3, fd, TCGETS, &k_termios);
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+ if (retval)
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+ {
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+ /* We cannot verify if the setting is ok. We don't return
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+ an error (?). */
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+ __set_errno (save);
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+ retval = 0;
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+ }
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+ else if ((termios_p->c_cflag & (PARENB | CREAD))
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+ != (k_termios.c_cflag & (PARENB | CREAD))
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+ || ((termios_p->c_cflag & CSIZE)
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+ && ((termios_p->c_cflag & CSIZE)
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+ != (k_termios.c_cflag & CSIZE))))
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+ {
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+ /* It looks like the Linux kernel silently changed the
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+ PARENB/CREAD/CSIZE bits in c_cflag. Report it as an
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+ error. */
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+ __set_errno (EINVAL);
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+ retval = -1;
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+ }
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+ }
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+
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+ return retval;
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}
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libc_hidden_def (tcsetattr)
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