src/c_compat.c

   1
   2 #include <sys/types.h>
   3 #include <sys/stat.h>
   4 #include <fcntl.h>
   5 #include <string.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8
   9 #include <unistd.h>
  10 #include <errno.h>
  11 #include <sys/time.h>
  12 #include <time.h>
  13
  14 #ifdef _WIN32
  15 #include <windows.h>
  16 #include <io.h>
  17 #endif
  18
  19 #ifndef _WIN32
  20
  21 int open_read(const char *fname) {
  22   return open(fname, O_RDONLY);
  23 }
  24
  25 int open_write(const char *fname) {
  26   return open(fname, O_WRONLY | O_TRUNC | O_CREAT,
  27               S_IWUSR | S_IRUSR | S_IROTH | S_IRGRP);
  28 }
  29
  30 int get_errno() {
  31   return errno;
  32 }
  33
  34 #include <sys/wait.h>
  35 #include <signal.h>
  36 #if  HAVE_SIGINFO_H
  37 #include <siginfo.h>
  38 #endif
  39
  40 /* This waits and then returns the exit status of the process that was
  41    waited for. */
  42 int smart_wait(int pid) {
  43   int stat;
  44   pid_t rc;
  45
  46   do {
  47       rc = waitpid(pid, &stat, 0);
  48   } while(rc < 0 && errno == EINTR);
  49
  50   if(rc < 0) {
  51     perror("waitpid");
  52     return -138;
  53   } else if (WIFEXITED(stat)) {
  54     return WEXITSTATUS(stat);
  55   } else if (WIFSIGNALED(stat)) {
  56     /* Fixme: psignal isn't portable (not in POSIX).  */
  57     psignal(WTERMSIG(stat), "Error in subprocess");
  58     return - WTERMSIG(stat);
  59   } else {
  60     return -137;
  61   }
  62 }
  63
  64 #include <unistd.h>
  65 #include <sys/time.h>
  66 #include <errno.h>
  67 #include <stdio.h>
  68
  69 int execvp_no_vtalarm(const char *file, char *const argv[]) {
  70   /* Reset the itimers in the child, so it doesn't get plagued
  71    * by SIGVTALRM interrupts.
  72    */
  73   struct timeval tv_null = { 0, 0 };
  74   struct itimerval itv;
  75   itv.it_interval = tv_null;
  76   itv.it_value = tv_null;
  77   setitimer(ITIMER_REAL, &itv, NULL);
  78   setitimer(ITIMER_VIRTUAL, &itv, NULL);
  79   setitimer(ITIMER_PROF, &itv, NULL);
  80   execvp(file, argv);
  81   perror("Error in execvp");
  82   return errno;
  83 }
  84
  85 #include <sys/types.h>
  86 #include <sys/stat.h>
  87 #endif
  88