Add missing includes to zed_log.c

GCC 4.9.4 complains about implicit function declarations when building
against musl on Gentoo.

zed_log.c: In function ‘zed_log_pipe_open’:
zed_log.c:69:7: warning: implicit declaration of function ‘getpid’
       (int)getpid());
       ^
zed_log.c:71:2: warning: implicit declaration of function ‘pipe’
  if (pipe(_ctx.pipe_fd) < 0)
  ^
zed_log.c: In function ‘zed_log_pipe_close_reads’:
zed_log.c:90:2: warning: implicit declaration of function ‘close’
  if (close(_ctx.pipe_fd[0]) < 0)
  ^
zed_log.c: In function ‘zed_log_pipe_wait’:
zed_log.c:141:3: warning: implicit declaration of function ‘read’
   n = read(_ctx.pipe_fd[0], &c, sizeof (c));

The [-Wimplicit-function-declaration] at the end of each warning has
been removed to meet comment style requirements.

The man pages say to include <sys/types.h> and <unistd.h>. Doing that
silences the warnings.

Reviewed-by: loli10K <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: George Melikov <[email protected]>
Signed-off-by: Richard Yao <[email protected]>
Closes #5993

1 files changed, 2 insertions, 0 deletions

diff --git a/cmd/zed/zed_log.c b/cmd/zed/zed_log.c
index 0697b7175..5a3f2dbdb 100644
--- a/cmd/zed/zed_log.c
+++ b/cmd/zed/zed_log.c
@@ -18,7 +18,9 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/types.h>
 #include <syslog.h>
+#include <unistd.h>
 #include "zed_log.h"
 
 #define	ZED_LOG_MAX_LOG_LEN	1024