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3153
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1 #if defined (__CYGWIN32__) |
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2 |
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3 #include <sys/types.h> |
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4 #include <sys/wait.h> |
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5 #include <errno.h> |
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6 #include <signal.h> |
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7 #include <unistd.h> |
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8 #include <stdio.h> |
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9 |
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10 int |
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11 system (const char *cmd) |
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12 { |
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13 pid_t pid; |
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14 |
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15 int status = 1; |
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16 |
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17 struct sigaction ignore, saved_sigint, saved_sigquit; |
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18 |
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19 sigset_t child_mask, saved_mask; |
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20 |
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21 if (cmd) |
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22 { |
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23 ignore.sa_handler = SIG_IGN; |
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24 |
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25 sigemptyset (&ignore.sa_mask); |
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26 |
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27 ignore.sa_flags = 0; |
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28 |
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29 if (sigaction (SIGINT, &ignore, &saved_sigint) < 0) |
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30 return -1; |
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31 |
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32 if (sigaction (SIGQUIT, &ignore, &saved_sigquit) < 0) |
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33 return -1; |
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34 |
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35 sigemptyset (&child_mask); |
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36 |
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37 sigaddset (&child_mask, SIGCHLD); |
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38 |
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39 if (sigprocmask (SIG_BLOCK, &child_mask, &saved_mask) < 0) |
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40 return -1; |
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41 |
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42 if ((pid = fork ()) < 0) |
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43 status = -1; |
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44 else if (pid == 0) |
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45 { |
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46 sigaction (SIGINT, &saved_sigint, 0); |
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47 sigaction (SIGQUIT, &saved_sigquit, 0); |
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48 |
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49 sigprocmask (SIG_SETMASK, &saved_mask, 0); |
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50 |
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51 execl ("/bin/sh", "sh", "-c", cmd, 0); |
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52 |
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53 exit (127); |
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54 } |
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55 else |
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56 { |
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57 while (waitpid (pid, &status, 0) < 0) |
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58 { |
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59 if (errno != EINTR) |
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60 { |
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61 status = -1; |
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62 break; |
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63 } |
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64 } |
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65 } |
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66 |
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67 if (sigaction (SIGINT, &saved_sigint, 0) < 0) |
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68 return -1; |
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69 |
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70 if (sigaction (SIGQUIT, &saved_sigquit, 0) < 0) |
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71 return -1; |
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72 |
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73 if (sigprocmask (SIG_SETMASK, &saved_mask, 0) < 0) |
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74 return -1; |
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75 } |
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76 |
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77 return status; |
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78 } |
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79 |
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80 #if defined (TEST) |
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81 int |
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82 main (void) |
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83 { |
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84 system ("info"); |
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85 while (1) |
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86 { |
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87 printf ("foo-i-hithere\n"); |
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88 sleep (1); |
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89 } |
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90 return 0; |
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91 } |
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92 #endif |
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93 |
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94 #endif |
