From 8c7e28a191709f90736054e6f7844cf35b4ab93d Mon Sep 17 00:00:00 2001 From: Tom Gundersen Date: Sat, 16 May 2015 01:07:45 +0200 Subject: util: loop_write - accept 0-length message write() can send empty messages, so make sure loop_write() can do the same. --- src/shared/util.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/shared/util.c b/src/shared/util.c index dda88bd2ee..3060adc8a6 100644 --- a/src/shared/util.c +++ b/src/shared/util.c @@ -1664,7 +1664,7 @@ int loop_write(int fd, const void *buf, size_t nbytes, bool do_poll) { errno = 0; - while (nbytes > 0) { + do { ssize_t k; k = write(fd, p, nbytes); @@ -1684,12 +1684,12 @@ int loop_write(int fd, const void *buf, size_t nbytes, bool do_poll) { return -errno; } - if (k == 0) /* Can't really happen */ + if (nbytes > 0 && k == 0) /* Can't really happen */ return -EIO; p += k; nbytes -= k; - } + } while (nbytes > 0); return 0; } -- cgit v1.2.3-54-g00ecf