diff options
Diffstat (limited to 'bin/sh/redir.c')
| -rw-r--r-- | bin/sh/redir.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/bin/sh/redir.c b/bin/sh/redir.c index 695e150..08878f6 100644 --- a/bin/sh/redir.c +++ b/bin/sh/redir.c @@ -166,8 +166,11 @@ openredirect(union node *redir, char memory[10]) /* * We suppress interrupts so that we won't leave open file - * descriptors around. This may not be such a good idea because - * an open of a device or a fifo can block indefinitely. + * descriptors around. Because the signal handler remains + * installed and we do not use system call restart, interrupts + * will still abort blocking opens such as fifos (they will fail + * with EINTR). There is, however, a race condition if an interrupt + * arrives after INTOFF and before open blocks. */ INTOFF; memory[fd] = 0; |
