+ case OPT_USERMAP:
+ if (usermap) {
+ if (usermap_via_chown) {
+ snprintf(err_buf, sizeof err_buf,
+ "--usermap conflicts with prior --chown.\n");
+ return 0;
+ }
+ snprintf(err_buf, sizeof err_buf,
+ "You can only specify --usermap once.\n");
+ return 0;
+ }
+ usermap = (char *)poptGetOptArg(pc);
+ usermap_via_chown = False;
+ break;
+
+ case OPT_GROUPMAP:
+ if (groupmap) {
+ if (groupmap_via_chown) {
+ snprintf(err_buf, sizeof err_buf,
+ "--groupmap conflicts with prior --chown.\n");
+ return 0;
+ }
+ snprintf(err_buf, sizeof err_buf,
+ "You can only specify --groupmap once.\n");
+ return 0;
+ }
+ groupmap = (char *)poptGetOptArg(pc);
+ groupmap_via_chown = False;
+ break;
+
+ case OPT_CHOWN: {
+ const char *chown = poptGetOptArg(pc);
+ int len;
+ if ((arg = strchr(chown, ':')) != NULL)
+ len = arg++ - chown;
+ else
+ len = strlen(chown);
+ if (len) {
+ if (usermap) {
+ if (!usermap_via_chown) {
+ snprintf(err_buf, sizeof err_buf,
+ "--chown conflicts with prior --usermap.\n");
+ return 0;
+ }
+ snprintf(err_buf, sizeof err_buf,
+ "You can only specify a user-affecting --chown once.\n");
+ return 0;
+ }
+ if (asprintf(&usermap, "*:%.*s", len, chown) < 0)
+ out_of_memory("parse_arguments");
+ usermap_via_chown = True;
+ }
+ if (arg && *arg) {
+ if (groupmap) {
+ if (!groupmap_via_chown) {
+ snprintf(err_buf, sizeof err_buf,
+ "--chown conflicts with prior --groupmap.\n");
+ return 0;
+ }
+ snprintf(err_buf, sizeof err_buf,
+ "You can only specify a group-affecting --chown once.\n");
+ return 0;
+ }
+ if (asprintf(&groupmap, "*:%s", arg) < 0)
+ out_of_memory("parse_arguments");
+ groupmap_via_chown = True;
+ }
+ break;
+ }
+