diff options
| -rw-r--r-- | lib/libc_r/uthread/uthread_write.c | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/lib/libc_r/uthread/uthread_write.c b/lib/libc_r/uthread/uthread_write.c index 072b989..85ef9eb 100644 --- a/lib/libc_r/uthread/uthread_write.c +++ b/lib/libc_r/uthread/uthread_write.c @@ -110,20 +110,35 @@ _write(int fd, const void *buf, size_t nbytes) * interrupted by a signal */ if (curthread->interrupted) { - /* Return an error: */ - ret = -1; + if (num > 0) { + /* Return partial success: */ + ret = num; + } else { + /* Return an error: */ + errno = EINTR; + ret = -1; + } } /* - * If performing a non-blocking write or if an - * error occurred, just return whatever the write - * syscall did: + * If performing a non-blocking write, + * just return whatever the write syscall did: */ - } else if (!blocking || n < 0) { + } else if (!blocking) { /* A non-blocking call might return zero: */ ret = n; break; + /* + * If there was an error, return partial success + * (if any bytes were written) or else the error: + */ + } else if (n < 0) { + if (num > 0) + ret = num; + else + ret = n; + /* Check if the write has completed: */ } else if (num >= nbytes) /* Return the number of bytes written: */ |
