diff options
| -rw-r--r-- | erts/emulator/sys/unix/sys.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c index a7ea4b2490..77d7154313 100644 --- a/erts/emulator/sys/unix/sys.c +++ b/erts/emulator/sys/unix/sys.c @@ -547,6 +547,25 @@ erts_sys_pre_init(void) #endif #endif /* USE_THREADS */ erts_smp_atomic_init_nob(&sys_misc_mem_sz, 0); + + { + /* + * Unfortunately we depend on fd 0,1,2 in the old shell code. + * So if for some reason we do not have those open when we start + * we have to open them here. Not doing this can cause the emulator + * to deadlock when reaping the fd_driver ports :( + */ + int fd; + /* Make sure fd 0 is open */ + if ((fd = open("/dev/null", O_RDONLY)) != 0) + close(fd); + /* Make sure fds 1 and 2 are open */ + while (fd < 3) { + fd = open("/dev/null", O_WRONLY); + } + close(fd); + } + } void |