+
+/* Open a file with the desired permissions, minus the umask.
+ Also, if we want to create an executable file, we call fchmod()
+ to set the executable bits. */
+
+FILE *fopenmask(const char *filename, const char *mode, mode_t perms) {
+ mode_t mask = umask(0);
+ perms &= ~mask;
+ umask(~perms & 0777);
+ FILE *f = fopen(filename, mode);
+
+ if(!f) {
+ fprintf(stderr, "Could not open %s: %s\n", filename, strerror(errno));
+ return NULL;
+ }
+
+#ifdef HAVE_FCHMOD
+
+ if(perms & 0444) {
+ fchmod(fileno(f), perms);
+ }
+
+#endif
+ umask(mask);
+ return f;
+}
+