| 45 | } |
| 46 | |
| 47 | pid_t pipecmdarr(int *fd_tochild, int *fd_fromchild, int *fd_errfromchild, |
| 48 | char *const *arr) |
| 49 | { |
| 50 | int tochild[2], fromchild[2], errfromchild[2], execfail[2]; |
| 51 | /* fds for parent to close */ |
| 52 | int par_close[4], num_par_close = 0; |
| 53 | /* fds for child to close */ |
| 54 | int child_close[4], num_child_close = 0; |
| 55 | pid_t childpid; |
| 56 | int err; |
| 57 | |
| 58 | if (fd_tochild) { |
| 59 | if (fd_tochild == &pipecmd_preserve) { |
| 60 | tochild[0] = STDIN_FILENO; |
| 61 | } else if (pipe(tochild) == 0) { |
| 62 | par_close[num_par_close++] = tochild[0]; |
| 63 | child_close[num_child_close++] = tochild[1]; |
| 64 | } else |
| 65 | goto fail; |
| 66 | } else { |
| 67 | tochild[0] = open("/dev/null", O_RDONLY); |
| 68 | if (tochild[0] < 0) |
| 69 | goto fail; |
| 70 | par_close[num_par_close++] = tochild[0]; |
| 71 | } |
| 72 | if (fd_fromchild) { |
| 73 | if (fd_fromchild == &pipecmd_preserve) { |
| 74 | fromchild[1] = STDOUT_FILENO; |
| 75 | } else if (pipe(fromchild) == 0) { |
| 76 | par_close[num_par_close++] = fromchild[1]; |
| 77 | child_close[num_child_close++] = fromchild[0]; |
| 78 | } else |
| 79 | goto fail; |
| 80 | } else { |
| 81 | fromchild[1] = open("/dev/null", O_WRONLY); |
| 82 | if (fromchild[1] < 0) |
| 83 | goto fail; |
| 84 | par_close[num_par_close++] = fromchild[1]; |
| 85 | } |
| 86 | if (fd_errfromchild) { |
| 87 | if (fd_errfromchild == &pipecmd_preserve) { |
| 88 | errfromchild[1] = STDERR_FILENO; |
| 89 | } else if (fd_errfromchild == fd_fromchild) { |
| 90 | errfromchild[0] = fromchild[0]; |
| 91 | errfromchild[1] = fromchild[1]; |
| 92 | } else if (pipe(errfromchild) == 0) { |
| 93 | par_close[num_par_close++] = errfromchild[1]; |
| 94 | child_close[num_child_close++] = errfromchild[0]; |
| 95 | } else |
| 96 | goto fail; |
| 97 | } else { |
| 98 | errfromchild[1] = open("/dev/null", O_WRONLY); |
| 99 | if (errfromchild[1] < 0) |
| 100 | goto fail; |
| 101 | par_close[num_par_close++] = errfromchild[1]; |
| 102 | } |
| 103 | |
| 104 | if (pipe(execfail) != 0) |
no test coverage detected