none/tests/solaris/proc_psinfo.c

   1 /*
   2  * Reads /proc/self/psinfo such that it can be tested whether Valgrind
   3  * intercepts the system calls that access this pseudo-file.
   4  */
   5
   6 #include <fcntl.h>
   7 #include <limits.h>
   8 #include <procfs.h>
   9 #include <stdio.h>
  10 #include <unistd.h>
  11
  12 static void test_psinfo(int op, const char *label,
  13                         const char *path)
  14 {
  15    int fd;
  16    if (op == 0) {
  17       printf("open for %s:\n", label);
  18
  19       fd = open(path, O_RDONLY);
  20       if (fd < 0) {
  21          perror("open");
  22          return;
  23       }
  24    } else {
  25       printf("openat for %s:\n", label);
  26
  27       fd = openat(AT_FDCWD, path, O_RDONLY);
  28       if (fd < 0) {
  29          perror("openat");
  30          return;
  31       }
  32    }
  33
  34    psinfo_t psinfo;
  35    ssize_t bytes = read(fd, &psinfo, sizeof(psinfo));
  36    if (bytes != sizeof(psinfo)) {
  37       perror("read");
  38       return;
  39    }
  40
  41    printf("fname: %s\n", psinfo.pr_fname);
  42    printf("psargs: %s\n", psinfo.pr_psargs);
  43
  44    printf("argc: %d\n", psinfo.pr_argc);
  45    unsigned int i;
  46    char **argv = (char **) psinfo.pr_argv;
  47    for (i = 0; i < psinfo.pr_argc; i++) {
  48       printf("argv[%u]: %s\n", i, argv[i]);
  49    }
  50
  51    close(fd);
  52 }
  53
  54 int main(int argc, const char *argv[])
  55 {
  56    char path[PATH_MAX];
  57    snprintf(path, sizeof(path), "/proc/%ld/psinfo", (long int) getpid());
  58
  59    test_psinfo(0, "/proc/self/psinfo", "/proc/self/psinfo");
  60    printf("\n");
  61    test_psinfo(0, "/proc/<pid>/psinfo", path);
  62    printf("\n");
  63
  64    test_psinfo(1, "/proc/self/psinfo", "/proc/self/psinfo");
  65    printf("\n");
  66    test_psinfo(1, "/proc/<pid>/psinfo", path);
  67
  68    return 0;
  69 }