ref: 0b9c6fa117c3fe571aed497579b3340b2f8a1164
dir: /sys/src/cmd/upas/common/become.c/
#include "common.h" #include <auth.h> #include <ndb.h> /* * become powerless user */ int become(char **, char *who) { int fd; if(strcmp(who, "none") == 0) { fd = open("#c/user", OWRITE); if(fd < 0 || write(fd, "none", strlen("none")) < 0) { werrstr("can't become none"); return -1; } close(fd); if(newns("none", 0)) { werrstr("can't set new namespace"); return -1; } } return 0; }