lib: Return number of written bytes on flow_write0.17.0

This is more in line with the write() system call and prepares for
partial writes. Partial writes are disabled by default (and not yet
implemented).

Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>

1 files changed, 3 insertions, 2 deletions

diff --git a/src/tools/obc/obc.c b/src/tools/obc/obc.c
index eb5a42ce..256cb84e 100644
--- a/src/tools/obc/obc.c
+++ b/src/tools/obc/obc.c
@@ -88,7 +88,8 @@ static int reader_main(const char * dst)
 static int writer_main(const char * dst,
                        const char * message)
 {
-        int     fd      = 0;
+        int     fd  = 0;
+        size_t  len = strlen(message) + 1;
 
         fd = flow_join(dst, NULL, NULL);
         if (fd < 0) {
@@ -96,7 +97,7 @@ static int writer_main(const char * dst,
                 return -1;
         }
 
-        if (flow_write(fd, message, strlen(message) + 1) < 0) {
+        if (flow_write(fd, message, len) < 0) {
                 printf("Failed to write packet.\n");
                 flow_dealloc(fd);
                 return -1;