+/***********************************************************
+ * NOT USING LIBZIP: FORKING
+ ***********************************************************/
+#else
+
+#include <sys/wait.h>
+
+extern char **environ;
+
+static int zrun(const char *path, const char *args[])
+{
+ int rc;
+ siginfo_t si;
+
+ rc = fork();
+ if (rc < 0) {
+ /* can't fork */
+ ERROR("error while forking in zrun: %m");
+ return rc;
+ }
+ if (!rc) {
+ rc = execve(realpath(path, NULL), (char * const*)args, environ);
+ ERROR("can't execute %s in zrun: %m", args[0]);
+ _exit(1);
+ return rc;
+ }
+ /* wait termination of the child */
+ rc = waitid(P_PID, (id_t)rc, &si, WEXITED);
+ if (rc)
+ ERROR("unexpected wait status in zrun of %s: %m", args[0]);
+ else if (si.si_code != CLD_EXITED)
+ ERROR("unexpected termination status of %s in zrun", args[0]);
+ else if (si.si_status != 0)
+ ERROR("child for %s terminated with error code %d in zwrite", args[0], si.si_status);
+ else
+ return 0;
+ return -1;
+}
+
+/* read (extract) 'zipfile' in current directory */
+int zread(const char *zipfile, unsigned long long maxsize)
+{
+ int rc;
+ const char *args[6];
+
+ args[0] = "unzip";
+ args[1] = "-q";
+ args[2] = "-d";
+ args[3] = workdir;
+ args[4] = zipfile;
+ args[5] = NULL;
+
+ file_reset();
+ rc = zrun(PATH_TO_UNZIP, args);
+ if (!rc)
+ rc = fill_files();
+ return rc;
+}
+
+/* write (pack) content of the current directory in 'zipfile' */
+int zwrite(const char *zipfile)
+{
+ const char *args[6];
+
+ args[0] = "zip";
+ args[1] = "-q";
+ args[2] = "-r";
+ args[3] = workdir;
+ args[4] = zipfile;
+ args[5] = NULL;
+
+ return zrun(PATH_TO_ZIP, args);
+}
+
+#endif
+/***********************************************************
+* TESTING
+***********************************************************/