depot/third_party/nixpkgs/pkgs/by-name/xs/xscreensaver/xscreensaver-wrapper-prefix.patch
Default email 504525a148 Project import generated by Copybara.
GitOrigin-RevId: bd645e8668ec6612439a9ee7e71f7eac4099d4f6
2024-01-02 12:29:13 +01:00

37 lines
1.3 KiB
Diff

--- a/driver/xscreensaver.c
+++ b/driver/xscreensaver.c
@@ -253,6 +253,8 @@
#undef MAX
#define MAX(x,y)((x)>(y)?(x):(y))
+/* Define the default wrapper prefix here, for NixOS */
+#define NIXOS_WRAPPER_PREFIX "@wrapperPrefix@"
/* Globals used in this file.
*/
@@ -632,12 +634,24 @@ handle_sigchld (Display *dpy, Bool blanked_p)
static void
hack_environment (void)
{
+ static const char *wrapper_path = NIXOS_WRAPPER_PREFIX;
static const char *def_path = DEFAULT_PATH_PREFIX;
const char *opath = getenv("PATH");
char *npath;
if (! opath) opath = "/bin:/usr/bin"; /* WTF */
- npath = (char *) malloc(strlen(def_path) + strlen(opath) + 20);
+ /* NOTE: The NixOS patch adds extra margin than what would be expected for a
+ single extra ":" PATH separator to account for UTF-32 encoding. The
+ original 20 bytes would have only accounted for UTF-16 safely (the path
+ concatenation would have needed 28 bytes of margin at minimum for UTF-32).
+ */
+ npath = (char *) malloc(strlen(wrapper_path) + strlen(def_path) + strlen(opath) + 32);
strcpy (npath, "PATH=");
+ if (wrapper_path && *wrapper_path)
+ {
+ strcat (npath, wrapper_path);
+ strcat (npath, ":");
+ }
+
strcat (npath, def_path);
strcat (npath, ":");
strcat (npath, opath);