| | 1 | /* $Id$ |
| | 2 | * |
| | 3 | * Copyright (C) 1988-1998 by the Massachusetts Institute of Technology. |
| | 4 | * For copying and distribution information, please see the file |
| | 5 | * <mit-copyright.h>. |
| | 6 | */ |
| | 7 | |
| | 8 | #include <mit-copyright.h> |
| | 9 | #include <moira.h> |
| | 10 | #include "update_server.h" |
| | 11 | #include "update.h" |
| | 12 | |
| | 13 | #include <sys/wait.h> |
| | 14 | |
| | 15 | #include <errno.h> |
| | 16 | #include <signal.h> |
| | 17 | #include <stdio.h> |
| | 18 | #include <unistd.h> |
| | 19 | |
| | 20 | RCSID("$Header$"); |
| | 21 | |
| | 22 | void exec_002(int conn, char *str) |
| | 23 | { |
| | 24 | int waitb, n; |
| | 25 | sigset_t mask, oldmask; |
| | 26 | pid_t pid; |
| | 27 | long code; |
| | 28 | |
| | 29 | if (!have_authorization) |
| | 30 | { |
| | 31 | send_int(conn, MR_PERM); |
| | 32 | return; |
| | 33 | } |
| | 34 | if (config_lookup("noexec")) |
| | 35 | { |
| | 36 | send_int(conn, EPERM); |
| | 37 | com_err(whoami, EPERM, "Not allowed to execute"); |
| | 38 | return; |
| | 39 | } |
| | 40 | |
| | 41 | str += 8; |
| | 42 | while (*str == ' ') |
| | 43 | str++; |
| | 44 | sigemptyset(&mask); |
| | 45 | sigaddset(&mask, SIGCHLD); |
| | 46 | sigprocmask(SIG_BLOCK, &mask, &oldmask); |
| | 47 | pid = fork(); |
| | 48 | switch (pid) |
| | 49 | { |
| | 50 | case -1: |
| | 51 | n = errno; |
| | 52 | sigprocmask(SIG_UNBLOCK, &oldmask, &mask); |
| | 53 | com_err(whoami, n, ": can't fork to run install script"); |
| | 54 | code = send_int(conn, n); |
| | 55 | if (code) |
| | 56 | exit(1); |
| | 57 | return; |
| | 58 | |
| | 59 | case 0: |
| | 60 | if (setuid(uid) < 0) |
| | 61 | { |
| | 62 | com_err(whoami, errno, "Unable to setuid to %d\n", uid); |
| | 63 | exit(1); |
| | 64 | } |
| | 65 | sigprocmask(SIG_UNBLOCK, &oldmask, &mask); |
| | 66 | execlp(str, str, NULL); |
| | 67 | n = errno; |
| | 68 | sigprocmask(SIG_UNBLOCK, &oldmask, &mask); |
| | 69 | com_err(whoami, n, ": %s", str); |
| | 70 | send_int(conn, n); |
| | 71 | exit(1); |
| | 72 | |
| | 73 | default: |
| | 74 | do |
| | 75 | n = wait(&waitb); |
| | 76 | while (n != -1 && n != pid); |
| | 77 | |
| | 78 | sigprocmask(SIG_UNBLOCK, &oldmask, &mask); |
| | 79 | if ((WIFEXITED(waitb) && (WEXITSTATUS(waitb) != 0)) || |
| | 80 | WIFSIGNALED(waitb)) |
| | 81 | { |
| | 82 | if (WIFSIGNALED(waitb)) |
| | 83 | { |
| | 84 | n = MR_COREDUMP; |
| | 85 | com_err(whoami, n, " child exited on signal %d", |
| | 86 | WTERMSIG(waitb)); |
| | 87 | } |
| | 88 | else |
| | 89 | { |
| | 90 | n = WEXITSTATUS(waitb) + ERROR_TABLE_BASE_sms; |
| | 91 | com_err(whoami, n, " child exited with status %d", |
| | 92 | WEXITSTATUS(waitb)); |
| | 93 | } |
| | 94 | code = send_int(conn, n); |
| | 95 | if (code) |
| | 96 | exit(1); |
| | 97 | } |
| | 98 | else |
| | 99 | { |
| | 100 | code = send_ok(conn); |
| | 101 | if (code) |
| | 102 | exit(1); |
| | 103 | } |
| | 104 | } |
| | 105 | return; |
| | 106 | } |
andersk / moira.git / blame_incremental