none/tests/process_vm_readv_writev.c

   1 #define _GNU_SOURCE 1
   2
   3 #include <config.h>
   4 #include <stdlib.h>
   5 #include <stdio.h>
   6 #include <string.h>
   7 #include <unistd.h>
   8 #include <sys/types.h>
   9 #include <sys/uio.h>
  10
  11 static int status = EXIT_SUCCESS;
  12
  13 #ifdef HAVE_PROCESS_VM_READV
  14
  15 static void test_process_vm_readv()
  16 {
  17    char lbuf[] = "123456";
  18    char rbuf[] = "ABCDEF";
  19
  20    struct iovec lvec[2];
  21    struct iovec rvec[2];
  22
  23    lvec[0].iov_base = lbuf + 1;
  24    lvec[0].iov_len = 1;
  25    lvec[1].iov_base = lbuf + 3;
  26    lvec[1].iov_len = 2;
  27
  28    rvec[0].iov_base = rbuf + 1;
  29    rvec[0].iov_len = 2;
  30    rvec[1].iov_base = rbuf + 4;
  31    rvec[1].iov_len = 1;
  32
  33    if (process_vm_readv(getpid(),
  34                         lvec, 2,
  35                         rvec, 2,
  36                         0 ) < 0 ) {
  37       perror("process_vm_readv");
  38       status = EXIT_FAILURE;
  39    }
  40
  41    if (strcmp(lbuf, "1B3CE6") != 0) {
  42       fprintf(stderr, "Expected: \"1B3CE6\"; Got: \"%s\"\n", lbuf);
  43       status = EXIT_FAILURE;
  44    }
  45 }
  46
  47 #endif /* defined( HAVE_PROCESS_VM_READV ) */
  48
  49 #ifdef HAVE_PROCESS_VM_WRITEV
  50
  51 static void test_process_vm_writev()
  52 {
  53    char lbuf[] = "123456";
  54    char rbuf[] = "ABCDEF";
  55
  56    struct iovec lvec[2];
  57    struct iovec rvec[2];
  58
  59    lvec[0].iov_base = lbuf + 1;
  60    lvec[0].iov_len = 1;
  61    lvec[1].iov_base = lbuf + 3;
  62    lvec[1].iov_len = 2;
  63
  64    rvec[0].iov_base = rbuf + 1;
  65    rvec[0].iov_len = 2;
  66    rvec[1].iov_base = rbuf + 4;
  67    rvec[1].iov_len = 1;
  68
  69    if (process_vm_writev(getpid(),
  70                          lvec, 2,
  71                          rvec, 2,
  72                          0 ) < 0 ) {
  73       perror("process_vm_writev");
  74       status = EXIT_FAILURE;
  75    }
  76
  77    if (strcmp(rbuf, "A24D5F") != 0) {
  78       fprintf(stderr, "Expected: \"A24D5F\"; Got: \"%s\"\n", rbuf);
  79       status = EXIT_FAILURE;
  80    }
  81 }
  82
  83 #endif /* defined( HAVE_PROCESS_VM_WRITEV ) */
  84
  85 int main(int argc, char *argv[])
  86 {
  87 #ifdef HAVE_PROCESS_VM_READV
  88    test_process_vm_readv();
  89 #endif
  90 #ifdef HAVE_PROCESS_VM_WRITEV
  91    test_process_vm_writev();
  92 #endif
  93    return status;
  94 }