memcheck/tests/freebsd/fexecve.c

   1 #include <fcntl.h> // open
   2 #include <stdio.h> // perror
   3 #include <string.h> // strdup
   4 #include <stdlib.h> // exit
   5 #include <unistd.h> // fexecve
   6
   7 int main(int argc, char **argv, char** envp)
   8 {
   9    char *exe = "/usr/bin/true";
  10
  11    int fd = open(exe, O_RDONLY);
  12    if (-1 == fd)
  13    {
  14       perror("open failed:");
  15       exit(-1);
  16    }
  17    char ** new_argv = malloc(2*sizeof(char *));
  18    char ** new_envp = malloc(2*sizeof(char *));
  19    char * arg1 = strdup("./fexecve");
  20    char * env1 = strdup("FOO=bar");
  21    int * new_fd = malloc(sizeof(int));
  22    *new_fd += fd;
  23    new_argv[1] = new_envp[1] = NULL;
  24    new_argv[0] = arg1;
  25    new_envp[0] = env1;
  26
  27    free(arg1);
  28    free(env1);
  29    if (-1 == fexecve(*new_fd, new_argv, new_envp))
  30    {
  31       perror("fexecv failed:");
  32       exit(-1);
  33    }
  34 }