ensure paret directories for sidecars

diff --git a/binary_storage.c b/binary_storage.c
index 0f0289119baa719a38fff12eea2a920878cb0727..3e4144111be32cadc1081ff74986c92104009166 100644 (file)
--- a/binary_storage.c
+++ b/binary_storage.c
@@ -12,6 +12,9 @@
 #include <string.h>
 #include <errno.h>
 #include <assert.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
 
 #include "binary_storage.h"
 #include "utils.h"
@@ -228,6 +231,25 @@ int __write_to_file(FILE *file, const char *name, const char *value, const size_
     return 0;
 }
 
+static int ensure_dirs(char *path) {
+    int n = strlen( path );
+    char *p = stralloc( n+1 );
+    memcpy( p, path, n+1 );
+    char *e = p + 1;
+    for ( ;; ) {
+       while ( *e && *e != '/' ) e++;
+       if ( *e ) {
+           *e = 0;
+           if ( access( p, F_OK ) && mkdir( p, 0777 ) ) {
+               return 1;
+           }
+           *(e++) = '/';
+       } else {
+           return 0;
+       }
+    }
+}
+
 /**
  *
  * @param path - path to file.
@@ -259,6 +281,11 @@ int binary_storage_write_key(const char *path, const char *name, const char *val
 
     int status;
     char *sidecar_path = get_sidecar_path(path);
+
+    if ( ensure_dirs( sidecar_path ) ) {
+       return -ENOATTR;
+    }
+
     FILE *file = fopen(sidecar_path, "w");
     strfree(sidecar_path);