diff options
Diffstat (limited to 'lib/libkse/thread/thr_fcntl.c')
| -rw-r--r-- | lib/libkse/thread/thr_fcntl.c | 34 |
1 files changed, 31 insertions, 3 deletions
diff --git a/lib/libkse/thread/thr_fcntl.c b/lib/libkse/thread/thr_fcntl.c index 556bd1f..eecda60 100644 --- a/lib/libkse/thread/thr_fcntl.c +++ b/lib/libkse/thread/thr_fcntl.c @@ -41,6 +41,7 @@ int fcntl(int fd, int cmd,...) { int flags = 0; + int nonblock; int oldfd; int ret; int status; @@ -90,10 +91,37 @@ fcntl(int fd, int cmd,...) ret = _thread_fd_table[fd]->flags; break; case F_SETFL: + /* + * Get the file descriptor flags passed by the + * caller: + */ flags = va_arg(ap, int); - if ((ret = _thread_sys_fcntl(fd, cmd, flags | O_NONBLOCK)) == 0) { - _thread_fd_table[fd]->flags = flags; - } + + /* + * Check if the user wants a non-blocking file + * descriptor: + */ + nonblock = flags & O_NONBLOCK; + + /* Set the file descriptor flags: */ + if ((ret = _thread_sys_fcntl(fd, cmd, flags | O_NONBLOCK)) != 0) { + + /* Get the flags so that we behave like the kernel: */ + } else if ((flags = _thread_sys_fcntl(fd, + F_GETFL, 0)) == -1) { + /* Error getting flags: */ + ret = -1; + + /* + * Check if the file descriptor is non-blocking + * with respect to the user: + */ + } else if (nonblock) + /* A non-blocking descriptor: */ + _thread_fd_table[fd]->flags = flags | O_NONBLOCK; + else + /* Save the flags: */ + _thread_fd_table[fd]->flags = flags & ~O_NONBLOCK; break; default: /* Might want to make va_arg use a union */ |
