lustre/tests/test.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <fcntl.h>
   4 #include <errno.h>
   5 #include <sys/ioctl.h>
   6 #include <sys/stat.h>
   7 #include <asm/statfs.h>
   8 #include <unistd.h>
   9
  10 #define OBD_IOC_CREATE                 _IOR('f', 3, long)
  11 #define OBD_IOC_SETUP                  _IOW('f', 4, long)
  12 #define OBD_IOC_SYNC                   _IOR('f', 16, long)
  13 #define OBD_IOC_DESTROY                _IOW('f', 6, long)
  14 #define OBD_IOC_STATFS                _IORW('f', 15, long)
  15
  16 #define LOOP_DEVICE "/dev/loop0"
  17 #define OBD_DEVICE "/dev/obd"
  18
  19 int main (int argc, char * argv[])
  20 {
  21         int fd, rc, err = -1;
  22         struct stat stat_buf;
  23         struct statfs stfs;
  24
  25
  26         if (argc < 2) {
  27                 printf("syntax: %s command [argument]\n", argv[0]);
  28                 printf("Where command is one of \"setup\", \"create\", \"destroy\", or \"sync\".\n");
  29                 exit(1);
  30         }
  31         if (stat(LOOP_DEVICE, &stat_buf)) {
  32                 printf("Couldn't stat(" LOOP_DEVICE ").\n");
  33                 exit(1);
  34         }
  35         printf("Device: %u\n", (unsigned int) stat_buf.st_rdev);
  36
  37         fd = open (OBD_DEVICE, O_RDONLY);
  38         if (fd == -1) {
  39                 printf("Couldn't open " OBD_DEVICE ".\n");
  40                 exit(1);
  41         }
  42
  43         if (!strcmp(argv[1], "setup")) {
  44                 rc = ioctl(fd, OBD_IOC_SETUP, &stat_buf.st_rdev);
  45                 fprintf(stderr, "rc = %d, errno = %d\n", rc, errno);
  46         } else if (!strcmp(argv[1], "create")) {
  47                 int iter, i;
  48
  49                 if (argc < 3) {
  50                         printf("create requires a nonzero argument.\n");
  51                         exit(1);
  52                 }
  53
  54                 iter = atoi(argv[2]);
  55                 if (iter < 1) {
  56                         printf("create requires a nonzero argument.\n");
  57                         exit(1);
  58                 }
  59                 printf("creating %d objects...\n", iter);
  60
  61                 for (i = 0; i < iter; i++) {
  62                         if ((rc = ioctl(fd, OBD_IOC_CREATE, &err))) {
  63                                 fprintf(stderr, "Error; aborting.\n");
  64                                 break;
  65                         }
  66                         if ((rc = ioctl(fd, OBD_IOC_DESTROY, &err))) {
  67                                 fprintf(stderr, "Error; aborting.\n");
  68                                 break;
  69                         }
  70                 }
  71                 fprintf(stderr, "rc = %d, errno = %d, err = %d\n",
  72                         rc, errno, err);
  73         } else if (!strcmp(argv[1], "sync")) {
  74                 rc = ioctl(fd, OBD_IOC_SYNC, &err);
  75                 fprintf(stderr, "rc = %d, errno = %d, err = %d\n",
  76                         rc, errno, err);
  77         } else if (!strcmp(argv[1], "destroy")) {
  78                 int ino;
  79
  80                 if (argc < 3) {
  81                         printf("destroy requires a nonzero inode number.\n");
  82                         exit(1);
  83                 }
  84
  85                 ino = atoi(argv[2]);
  86                 if (ino < 1) {
  87                         printf("destroy requires a nonzero inode number.\n");
  88                         exit(1);
  89                 }
  90
  91                 rc = ioctl(fd, OBD_IOC_DESTROY, &ino);
  92                 fprintf(stderr, "rc = %d, errno = %d\n", rc, errno);
  93         } else {
  94                 printf("Invalid command, run with no arguments for help.\n");
  95         }
  96         close(fd);
  97
  98         return 0;
  99 }