Fix mkdir_r to not assume existence of PATH_MAX

Required to build on HURD, but good practice anyway.

Reviewed-by: Thorbjørn Lindeijer

1 files changed, 4 insertions, 8 deletions

diff --git a/src/utils/mkdir.cpp b/src/utils/mkdir.cpp
index e71bd4892..18d526d47 100644
--- a/src/utils/mkdir.cpp
+++ b/src/utils/mkdir.cpp
@@ -37,18 +37,14 @@
 
 #include "mkdir.h"
 
+/// Create a directory, making leading components first if necessary
 int mkdir_r(const char *pathname)
 {
-    char tmp[PATH_MAX];
+    size_t len = static_cast<int>(strlen(pathname));
+    char tmp[len+2];
     char *p;
 
-    if (strlen(pathname) >= PATH_MAX - 2)
-        return -1;
-
-    strncpy(tmp, pathname, sizeof(tmp) - 1);
-    tmp[PATH_MAX - 1] = '\0';
-
-    int len = static_cast<int>(strlen(tmp));
+    strcpy(tmp, pathname);
 
     // terminate the pathname with '/'
     if (tmp[len - 1] != '/')