diff options
Diffstat (limited to 'libbb/read.c')
| -rw-r--r-- | libbb/read.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libbb/read.c b/libbb/read.c index b93a695..06ce297 100644 --- a/libbb/read.c +++ b/libbb/read.c @@ -39,18 +39,18 @@ ssize_t FAST_FUNC safe_read(int fd, void *buf, size_t count) * *** BIG SURPRISE! It stays even after child exits! *** * * This is a design bug in UNIX API. - * fcntl(0, F_SETFL, fcntl(0, F_GETFL, 0) | O_NONBLOCK); + * fcntl(0, F_SETFL, fcntl(0, F_GETFL) | O_NONBLOCK); * will set nonblocking mode not only on _your_ stdin, but * also on stdin of your parent, etc. * * In general, * fd2 = dup(fd1); - * fcntl(fd2, F_SETFL, fcntl(fd2, F_GETFL, 0) | O_NONBLOCK); + * fcntl(fd2, F_SETFL, fcntl(fd2, F_GETFL) | O_NONBLOCK); * sets both fd1 and fd2 to O_NONBLOCK. This includes cases * where duping is done implicitly by fork() etc. * * We need - * fcntl(fd2, F_SETFD, fcntl(fd2, F_GETFD, 0) | O_NONBLOCK); + * fcntl(fd2, F_SETFD, fcntl(fd2, F_GETFD) | O_NONBLOCK); * (note SETFD, not SETFL!) but such thing doesn't exist. * * Alternatively, we need nonblocking_read(fd, ...) which doesn't |