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path: root/arch/um/drivers/chan_user.c
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Diffstat (limited to 'arch/um/drivers/chan_user.c')
-rw-r--r--arch/um/drivers/chan_user.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c
index b88e93b3a39..025764089ac 100644
--- a/arch/um/drivers/chan_user.c
+++ b/arch/um/drivers/chan_user.c
@@ -74,10 +74,16 @@ void generic_free(void *data)
int generic_console_write(int fd, const char *buf, int n)
{
+ sigset_t old, no_sigio;
struct termios save, new;
int err;
if (isatty(fd)) {
+ sigemptyset(&no_sigio);
+ sigaddset(&no_sigio, SIGIO);
+ if (sigprocmask(SIG_BLOCK, &no_sigio, &old))
+ goto error;
+
CATCH_EINTR(err = tcgetattr(fd, &save));
if (err)
goto error;
@@ -97,8 +103,11 @@ int generic_console_write(int fd, const char *buf, int n)
* Restore raw mode, in any case; we *must* ignore any error apart
* EINTR, except for debug.
*/
- if (isatty(fd))
+ if (isatty(fd)) {
CATCH_EINTR(tcsetattr(fd, TCSAFLUSH, &save));
+ sigprocmask(SIG_SETMASK, &old, NULL);
+ }
+
return err;
error:
return -errno;