Commit | Line | Data |
---|---|---|
0dee3c28 SW |
1 | /* |
2 | * Some non-inline ceph helpers | |
3 | */ | |
4 | #include "types.h" | |
5 | ||
752727a1 SW |
6 | /* |
7 | * return true if @layout appears to be valid | |
8 | */ | |
9 | int ceph_file_layout_is_valid(const struct ceph_file_layout *layout) | |
10 | { | |
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); | |
14 | ||
15 | /* stripe unit, object size must be non-zero, 64k increment */ | |
16 | if (!su || (su & (CEPH_MIN_STRIPE_UNIT-1))) | |
17 | return 0; | |
18 | if (!os || (os & (CEPH_MIN_STRIPE_UNIT-1))) | |
19 | return 0; | |
20 | /* object size must be a multiple of stripe unit */ | |
21 | if (os < su || os % su) | |
22 | return 0; | |
23 | /* stripe count must be non-zero */ | |
24 | if (!sc) | |
25 | return 0; | |
26 | return 1; | |
27 | } | |
28 | ||
29 | ||
0dee3c28 SW |
30 | int ceph_flags_to_mode(int flags) |
31 | { | |
32 | #ifdef O_DIRECTORY /* fixme */ | |
33 | if ((flags & O_DIRECTORY) == O_DIRECTORY) | |
34 | return CEPH_FILE_MODE_PIN; | |
35 | #endif | |
36 | #ifdef O_LAZY | |
37 | if (flags & O_LAZY) | |
38 | return CEPH_FILE_MODE_LAZY; | |
39 | #endif | |
40 | if ((flags & O_APPEND) == O_APPEND) | |
41 | flags |= O_WRONLY; | |
42 | ||
43 | flags &= O_ACCMODE; | |
44 | if ((flags & O_RDWR) == O_RDWR) | |
45 | return CEPH_FILE_MODE_RDWR; | |
46 | if ((flags & O_WRONLY) == O_WRONLY) | |
47 | return CEPH_FILE_MODE_WR; | |
48 | return CEPH_FILE_MODE_RD; | |
49 | } | |
50 | ||
51 | int ceph_caps_for_mode(int mode) | |
52 | { | |
53 | switch (mode) { | |
54 | case CEPH_FILE_MODE_PIN: | |
55 | return CEPH_CAP_PIN; | |
56 | case CEPH_FILE_MODE_RD: | |
57 | return CEPH_CAP_PIN | CEPH_CAP_FILE_SHARED | | |
58 | CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE; | |
59 | case CEPH_FILE_MODE_RDWR: | |
60 | return CEPH_CAP_PIN | CEPH_CAP_FILE_SHARED | | |
61 | CEPH_CAP_FILE_EXCL | | |
62 | CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | | |
63 | CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | | |
64 | CEPH_CAP_AUTH_SHARED | CEPH_CAP_AUTH_EXCL | | |
65 | CEPH_CAP_XATTR_SHARED | CEPH_CAP_XATTR_EXCL; | |
66 | case CEPH_FILE_MODE_WR: | |
67 | return CEPH_CAP_PIN | CEPH_CAP_FILE_SHARED | | |
68 | CEPH_CAP_FILE_EXCL | | |
69 | CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | | |
70 | CEPH_CAP_AUTH_SHARED | CEPH_CAP_AUTH_EXCL | | |
71 | CEPH_CAP_XATTR_SHARED | CEPH_CAP_XATTR_EXCL; | |
72 | } | |
73 | return 0; | |
74 | } |