src/ceph/src/client/test_ioctls.c

   1
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4 #include <unistd.h>
   5 #include <sys/types.h>
   6 #include <sys/stat.h>
   7 #include <fcntl.h>
   8 #include <limits.h>
   9
  10 #include <sys/ioctl.h>
  11 #include <netinet/in.h>
  12 #include <sys/socket.h>
  13 #include <netdb.h>
  14
  15 #include "ioctl.h"
  16
  17 char new_file_name[PATH_MAX];
  18
  19 int main(int argc, char **argv)
  20 {
  21         char *fn;
  22         int fd, err;
  23         struct ceph_ioctl_layout l;
  24         struct ceph_ioctl_dataloc dl;
  25
  26         if (argc < 3) {
  27                 printf("usage: ceph_test_ioctls <filename> <offset>\n");
  28                 return 1;
  29         }
  30         fn = argv[1];
  31
  32         fd = open(fn, O_CREAT|O_RDWR, 0644);
  33         if (fd < 0) {
  34                 perror("couldn't open file");
  35                 return 1;
  36         }
  37
  38         /* get layout */
  39         err = ioctl(fd, CEPH_IOC_GET_LAYOUT, (unsigned long)&l);
  40         if (err < 0) {
  41                 perror("ioctl IOC_GET_LAYOUT error");
  42                 return 1;
  43         }
  44         printf("layout:\n stripe_unit %lld\n stripe_count %lld\n object_size %lld\n data_pool %lld\n",
  45                (long long)l.stripe_unit, (long long)l.stripe_count, (long long)l.object_size, (long long)l.data_pool);
  46
  47
  48         /* set layout */
  49         l.stripe_unit = 1048576;
  50         l.stripe_count = 2;
  51         err = ioctl(fd, CEPH_IOC_SET_LAYOUT, (unsigned long)&l);
  52         if (err < 0) {
  53                perror("ioctl IOC_SET_LAYOUT error");
  54                return 1;
  55         }
  56         printf("set layout, writing to file\n");
  57
  58         printf("file %s\n", fn);
  59         /* get layout again */
  60         err = ioctl(fd, CEPH_IOC_GET_LAYOUT, (unsigned long)&l);
  61         if (err < 0) {
  62                 perror("ioctl IOC_GET_LAYOUT error");
  63                 return 1;
  64         }
  65         printf("layout:\n stripe_unit %lld\n stripe_count %lld\n object_size %lld\n data_pool %lld\n",
  66                (long long)l.stripe_unit, (long long)l.stripe_count, (long long)l.object_size, (long long)l.data_pool);
  67
  68         /* dataloc */
  69         dl.file_offset = atoll(argv[2]);
  70         err = ioctl(fd, CEPH_IOC_GET_DATALOC, (unsigned long)&dl);
  71         if (err < 0) {
  72                 perror("ioctl IOC_GET_DATALOC error");
  73                 return 1;
  74         }
  75
  76         printf("dataloc:\n");
  77         printf(" file_offset %lld (of object start)\n", (long long)dl.file_offset);
  78         printf(" object '%s'\n object_offset %lld\n object_size %lld object_no %lld\n",
  79                dl.object_name, (long long)dl.object_offset, (long long)dl.object_size, (long long)dl.object_no);
  80         printf(" block_offset %lld\n block_size %lld\n",
  81                (long long)dl.block_offset, (long long)dl.block_size);
  82
  83         char buf[80];
  84         getnameinfo((struct sockaddr *)&dl.osd_addr, sizeof(dl.osd_addr), buf, sizeof(buf), 0, 0, NI_NUMERICHOST);
  85         printf(" osd%lld %s\n", (long long)dl.osd, buf);
  86
  87         if (argc < 4)
  88           return 0;
  89
  90         /* set dir default layout */
  91         printf("testing dir policy setting\n");
  92         fd = open(argv[3], O_RDONLY);
  93         if (fd < 0) {
  94                 perror("couldn't open dir");
  95                 return 1;
  96         }
  97
  98         l.object_size = 1048576;
  99         l.stripe_count = 1;
 100         err = ioctl(fd, CEPH_IOC_SET_LAYOUT_POLICY, (unsigned long)&l);
 101         if (err < 0) {
 102                perror("ioctl IOC_SET_LAYOUT_POLICY error");
 103                return 1;
 104         }
 105         printf("set layout, creating file\n");
 106
 107         snprintf(new_file_name, sizeof(new_file_name),
 108                  "%s/testfile", argv[3]);
 109         fd = open(new_file_name, O_CREAT | O_RDWR, 0644);
 110         if (fd < 0) {
 111                 perror("couldn't open file");
 112                 return 1;
 113         }
 114         err = ioctl(fd, CEPH_IOC_GET_LAYOUT, (unsigned long)&l);
 115         if (err < 0) {
 116                 perror("ioctl IOC_GET_LAYOUT error");
 117                 return 1;
 118         }
 119         printf("layout:\n stripe_unit %lld\n stripe_count %lld\n object_size %lld\n data_pool %lld\n",
 120                (long long)l.stripe_unit, (long long)l.stripe_count, (long long)l.object_size, (long long)l.data_pool);
 121         return 0;
 122 }