[PATCH v2] static-nodes: tmpfiles - also create parents directories of device nodes

[Tom Gundersen <teg@xxxxxxx>]

Before:

c /dev/cpu/microcode 0600 - - - 10:184
c /dev/fuse 0600 - - - 10:229
c /dev/btrfs-control 0600 - - - 10:234
c /dev/loop-control 0600 - - - 10:237
c /dev/snd/timer 0600 - - - 116:33

After:

d /dev/cpu 0755 - - -
c /dev/cpu/microcode 0600 - - - 10:184
c /dev/fuse 0600 - - - 10:229
c /dev/btrfs-control 0600 - - - 10:234
c /dev/loop-control 0600 - - - 10:237
d /dev/snd 0755 - - -
c /dev/snd/timer 0600 - - - 116:33
---

v2: avoid using libgen.h as requested by Lucas

 tools/static-nodes.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/tools/static-nodes.c b/tools/static-nodes.c
index 65a36fc..2f9773a 100644
--- a/tools/static-nodes.c
+++ b/tools/static-nodes.c
@@ -85,12 +85,20 @@ static const struct static_nodes_format static_nodes_format_human = {
 static int write_tmpfiles(FILE *out, char modname[], char devname[], char type, unsigned int maj, unsigned int min)
 {
         int ret;
+        char *dir;
+
+        dir = strrchr(devname, '/');
+        if (dir) {
+                ret = fprintf(out, "d /dev/%.*s 0755 - - -\n", (int)(dir - devname), devname);
+                if (ret < 0)
+                        return EXIT_FAILURE;
+        }
 
         ret = fprintf(out, "%c /dev/%s 0600 - - - %u:%u\n", type, devname, maj, min);
-        if (ret >= 0)
-                return EXIT_SUCCESS;
-        else
+        if (ret < 0)
                 return EXIT_FAILURE;
+
+        return EXIT_SUCCESS;
 }
 
 static const struct static_nodes_format static_nodes_format_tmpfiles = {
-- 
1.8.2.1

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