From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Sat, 23 Dec 2017 10:32:04 +0000 (+0900)
Subject: basic: introduce socket_protocol_{from,to}_name()
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=03903826f35bba1c8b028b1235c2f006fdebd244;p=elogind.git

basic: introduce socket_protocol_{from,to}_name()

And use them where they can be applicable.
---

diff --git a/src/basic/generate-socket-protocol-list.sh b/src/basic/generate-socket-protocol-list.sh
new file mode 100644
index 000000000..18a540f32
--- /dev/null
+++ b/src/basic/generate-socket-protocol-list.sh
@@ -0,0 +1,5 @@
+#!/bin/sh -eu
+
+$1 -dM -include netinet/in.h - </dev/null | \
+        awk '/^#define[ \t]+IPPROTO_[^ \t]+[ \t]+[^ \t]/ { print $2; }' | \
+        sed -e 's/IPPROTO_//'
diff --git a/src/basic/meson.build b/src/basic/meson.build
index 3ea5e059a..5d9780e94 100644
--- a/src/basic/meson.build
+++ b/src/basic/meson.build
@@ -177,6 +177,8 @@
 #         smack-util.c
 #         smack-util.h
 #         socket-label.c
+#         socket-protocol-list.c
+#         socket-protocol-list.h
 #         socket-util.c
 #         socket-util.h
 #         sparse-endian.h
@@ -404,12 +406,20 @@ errno_list_txt = custom_target(
         command : [generate_errno_list, cpp],
         capture : true)
 
+generate_socket_protocol_list = find_program('generate-socket-protocol-list.sh')
+socket_protocol_list_txt = custom_target(
+        'socket-protocol-list.txt',
+        output : 'socket-protocol-list.txt',
+        command : [generate_socket_protocol_list, cpp],
+        capture : true)
+
 generated_gperf_headers = []
 #if 0 /// elogind has only the cap and errno list.
 # foreach item : [['af',     af_list_txt,     'af',         ''],
 #                 ['arphrd', arphrd_list_txt, 'arphrd',     'ARPHRD_'],
 #                 ['cap',    cap_list_txt,    'capability', ''],
-#                 ['errno',  errno_list_txt,  'errno',      '']]
+#                 ['errno',  errno_list_txt,  'errno',      ''],
+#                 ['socket-protocol', socket_protocol_list_txt, 'socket_protocol',     'IPPROTO_']]
 #else
 foreach item : [['cap',    cap_list_txt,    'capability', ''],
                 ['errno',  errno_list_txt,  'errno',      '']]
diff --git a/src/basic/socket-protocol-to-name.awk b/src/basic/socket-protocol-to-name.awk
new file mode 100644
index 000000000..4848a7631
--- /dev/null
+++ b/src/basic/socket-protocol-to-name.awk
@@ -0,0 +1,9 @@
+BEGIN{
+        print "static const char* const socket_protocol_names[] = { "
+}
+!/HOPOPTS/ {
+        printf "        [IPPROTO_%s] = \"%s\",\n", $1, tolower($1)
+}
+END{
+        print "};"
+}