From 6ec9b87c4ecf5144b5ea845a53a352dd9f2d173a Mon Sep 17 00:00:00 2001 From: Tom Gundersen Date: Sat, 16 May 2015 01:07:45 +0200 Subject: [PATCH] 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 d7a5b2094..d3dacfcfb 100644 --- a/src/shared/util.c +++ b/src/shared/util.c @@ -1665,7 +1665,7 @@ 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); @@ -1685,12 +1685,12 @@ 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; } -- 2.30.2