40   int rc = cap_rights_limit(cap_fd, &r_rws);  in main()  local
42 …if (rc < 0) fprintf(stderr, "*** cap_rights_limit() failed: errno=%d %s\n", errno, strerror(errno)…  in main()
47   rc = cap_rights_get(cap_fd, &rights);  in main()
50 …fprintf(stderr, "[%d] cap_rights_get(cap_fd=%d) rc=%d rights=%s\n", getpid_(), cap_fd, rc, buffer);  in main()
51   if (rc < 0) fprintf(stderr, "*** cap_rights_get() failed: errno=%d %s\n", errno, strerror(errno));  in main()
55   rc = fstat(cap_fd, &buf);  in main()
56   fprintf(stderr, "[%d] fstat(cap_fd=%d) rc=%d errno=%d\n", getpid_(), cap_fd, rc, errno);  in main()
57   if (rc != -1) fprintf(stderr, "*** fstat() unexpectedly succeeded\n");  in main()
61   rc = pdfork(&pd, 0);  in main()
62   if (rc < 0) fprintf(stderr, "*** pdfork() failed: errno=%d %s\n", errno, strerror(errno));  in main()
64   if (rc == 0) { /* child */  in main()
73   fprintf(stderr, "[%d] pdfork() rc=%d pd=%d\n", getpid_(), rc, pd);  in main()
76   pid_t actual_pid = rc;  in main()
78   rc = pdgetpid(pd, &got_pid);  in main()
79 …if (rc < 0) fprintf(stderr, "*** pdgetpid(pd=%d) failed: errno=%d %s\n", pd, errno, strerror(errno…  in main()
85   rc = pdkill(pd, SIGKILL);  in main()
86   fprintf(stderr, "[%d] pdkill(pd=%d, SIGKILL) -> rc=%d\n", getpid_(), pd, rc);  in main()
87   if (rc < 0) fprintf(stderr, "*** pdkill() failed: errno=%d %s\n", errno, strerror(errno));  in main()
93   rc = wait4(-1, &status, WNOHANG, NULL);  in main()
94   if (rc > 0) fprintf(stderr, "*** wait4(-1, ...) unexpectedly found child %d\n", rc);  in main()
101     rc = cap_getmode(&cap_mode);  in main()
102     fprintf(stderr, "  [%d] cap_getmode() -> rc=%d, cap_mode=%d\n", getpid_(), rc, cap_mode);  in main()
103     if (rc < 0) fprintf(stderr, "*** cap_getmode() failed: errno=%d %s\n", errno, strerror(errno));  in main()
105     rc = cap_enter();  in main()
106     fprintf(stderr, "  [%d] cap_enter() -> rc=%d\n", getpid_(), rc);  in main()
107     if (rc < 0) fprintf(stderr, "*** cap_enter() failed: errno=%d %s\n", errno, strerror(errno));  in main()
109     rc = cap_getmode(&cap_mode);  in main()
110     fprintf(stderr, "  [%d] cap_getmode() -> rc=%d, cap_mode=%d\n", getpid_(), rc, cap_mode);  in main()
111     if (rc < 0) fprintf(stderr, "*** cap_getmode() failed: errno=%d %s\n", errno, strerror(errno));  in main()
114     rc = open("/etc/passwd", O_RDONLY);  in main()
115     fprintf(stderr, "  [%d] open('/etc/passwd') -> rc=%d, errno=%d\n", getpid_(), rc, errno);  in main()
116     if (rc != -1) fprintf(stderr, "*** open() unexpectedly succeeded\n");  in main()
122   rc = wait4(child, &status, 0, NULL);  in main()
130   rc = fexecve(ls_bin, argv_pass, null_envp);  in main()
132 …fprintf(stderr, "*** fexecve(fd=%d) failed: rc=%d errno=%d %s\n", ls_bin, rc, errno, strerror(errn…  in main()