2 * Some non-inline ceph helpers
7 * return true if @layout appears to be valid
9 int ceph_file_layout_is_valid(const struct ceph_file_layout *layout)
11 __u32 su = le32_to_cpu(layout->fl_stripe_unit);
12 __u32 sc = le32_to_cpu(layout->fl_stripe_count);
13 __u32 os = le32_to_cpu(layout->fl_object_size);
15 /* stripe unit, object size must be non-zero, 64k increment */
16 if (!su || (su & (CEPH_MIN_STRIPE_UNIT-1)))
18 if (!os || (os & (CEPH_MIN_STRIPE_UNIT-1)))
20 /* object size must be a multiple of stripe unit */
21 if (os < su || os % su)
23 /* stripe count must be non-zero */
30 int ceph_flags_to_mode(int flags)
34 #ifdef O_DIRECTORY /* fixme */
35 if ((flags & O_DIRECTORY) == O_DIRECTORY)
36 return CEPH_FILE_MODE_PIN;
38 if ((flags & O_APPEND) == O_APPEND)
41 if ((flags & O_ACCMODE) == O_RDWR)
42 mode = CEPH_FILE_MODE_RDWR;
43 else if ((flags & O_ACCMODE) == O_WRONLY)
44 mode = CEPH_FILE_MODE_WR;
46 mode = CEPH_FILE_MODE_RD;
50 mode |= CEPH_FILE_MODE_LAZY;
56 int ceph_caps_for_mode(int mode)
58 int caps = CEPH_CAP_PIN;
60 if (mode & CEPH_FILE_MODE_RD)
61 caps |= CEPH_CAP_FILE_SHARED |
62 CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE;
63 if (mode & CEPH_FILE_MODE_WR)
64 caps |= CEPH_CAP_FILE_EXCL |
65 CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER |
66 CEPH_CAP_AUTH_SHARED | CEPH_CAP_AUTH_EXCL |
67 CEPH_CAP_XATTR_SHARED | CEPH_CAP_XATTR_EXCL;
68 if (mode & CEPH_FILE_MODE_LAZY)
69 caps |= CEPH_CAP_FILE_LAZYIO;