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-rw-r--r--lib/network.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/network.h b/lib/network.h
index 589b80e9..9333ef81 100644
--- a/lib/network.h
+++ b/lib/network.h
@@ -33,4 +33,8 @@ int writen (int, const u_char *, int);
-1 on error. */
extern int set_nonblocking(int fd);
+/* Does the I/O error indicate that the operation should be retried later? */
+#define ERRNO_IO_RETRY(EN) \
+ (((EN) == EAGAIN) || ((EN) == EWOULDBLOCK) || ((EN) == EINTR))
+
#endif /* _ZEBRA_NETWORK_H */