[core] reduce exposure of unistd.h, other includes

reduce exposure of unistd.h, and some other include cleanup

src/etag.c

@@ -3,6 +3,8 @@
 #include "buffer.h"
 #include "etag.h"
 
+#include <sys/stat.h>
+
 #if defined HAVE_STDINT_H
 # include <stdint.h>
 #elif defined HAVE_INTTYPES_H

src/etag.h

@@ -5,8 +5,7 @@
 #include "buffer.h"
 
 #include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
+struct stat;            /* declaration */
 
 typedef enum { ETAG_USE_INODE = 1, ETAG_USE_MTIME = 2, ETAG_USE_SIZE = 4 } etag_flags_t;
 

src/fdevent.c

@@ -2,6 +2,7 @@
 
 #include "base.h"
 #include "fdevent.h"
+#include "buffer.h"
 #include "log.h"
 
 #include <sys/types.h>

src/http-header-glue.c

@@ -18,6 +18,7 @@
 
 #include "sys-strings.h"
 #include "sys-socket.h"
+#include <unistd.h>
 #ifndef _WIN32
 #include <netdb.h>
 #endif

src/joblist.c

@@ -2,7 +2,6 @@
 
 #include "base.h"
 #include "joblist.h"
-#include "log.h"
 
 #include <stdlib.h>
 #include <string.h>

src/log.c

@@ -8,6 +8,7 @@
 #include <time.h>
 #include <string.h>
 #include <stdarg.h>
+#include <unistd.h>
 
 #ifdef HAVE_SYSLOG_H
 # include <syslog.h>

src/log.h

@@ -1,8 +1,12 @@
 #ifndef _LOG_H_
 #define _LOG_H_
 #include "first.h"
+#include <sys/types.h>
 
-#include "server.h"
+#include "buffer.h"
+
+struct server;   /* declaration */
+typedef struct server server;
 
 struct timespec; /* declaration */
 int log_clock_gettime_realtime (struct timespec *ts);

src/mod_authn_gssapi.c

@@ -36,6 +36,7 @@
 #include <errno.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 typedef struct {
     buffer *auth_gssapi_keytab;

src/mod_cml.c

@@ -14,7 +14,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
-#include <unistd.h>
 
 /* init the plugin data */
 INIT_FUNC(mod_cml_init) {

src/mod_cml_funcs.c

@@ -6,7 +6,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
-#include <unistd.h>
 #include <dirent.h>
 
 #include <lauxlib.h>

src/mod_status.c

@@ -14,7 +14,6 @@
 #include <fcntl.h>
 #include <stdlib.h>
 #include <string.h>
-#include <unistd.h>
 #include <errno.h>
 #include <time.h>
 #include <stdio.h>

src/response.c

@@ -19,9 +19,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
-#include <unistd.h>
-
-#include "sys-socket.h"
 
 int http_response_write_header(server *srv, connection *con) {
 	buffer *b;