mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-28 04:17:47 +00:00
1654dd0cf5
The object will be hashed to a placement seed (ps) based on the pg_pool's hash function. This allows new hashes to be introduced into an existing object store, or selection of a hash appropriate to the objects that will be stored in a particular pool. Signed-off-by: Sage Weil <sage@newdream.net>
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
/*
|
|
* Some non-inline ceph helpers
|
|
*/
|
|
#include "types.h"
|
|
|
|
/*
|
|
* return true if @layout appears to be valid
|
|
*/
|
|
int ceph_file_layout_is_valid(const struct ceph_file_layout *layout)
|
|
{
|
|
__u32 su = le32_to_cpu(layout->fl_stripe_unit);
|
|
__u32 sc = le32_to_cpu(layout->fl_stripe_count);
|
|
__u32 os = le32_to_cpu(layout->fl_object_size);
|
|
|
|
/* stripe unit, object size must be non-zero, 64k increment */
|
|
if (!su || (su & (CEPH_MIN_STRIPE_UNIT-1)))
|
|
return 0;
|
|
if (!os || (os & (CEPH_MIN_STRIPE_UNIT-1)))
|
|
return 0;
|
|
/* object size must be a multiple of stripe unit */
|
|
if (os < su || os % su)
|
|
return 0;
|
|
/* stripe count must be non-zero */
|
|
if (!sc)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
|
|
int ceph_flags_to_mode(int flags)
|
|
{
|
|
#ifdef O_DIRECTORY /* fixme */
|
|
if ((flags & O_DIRECTORY) == O_DIRECTORY)
|
|
return CEPH_FILE_MODE_PIN;
|
|
#endif
|
|
#ifdef O_LAZY
|
|
if (flags & O_LAZY)
|
|
return CEPH_FILE_MODE_LAZY;
|
|
#endif
|
|
if ((flags & O_APPEND) == O_APPEND)
|
|
flags |= O_WRONLY;
|
|
|
|
flags &= O_ACCMODE;
|
|
if ((flags & O_RDWR) == O_RDWR)
|
|
return CEPH_FILE_MODE_RDWR;
|
|
if ((flags & O_WRONLY) == O_WRONLY)
|
|
return CEPH_FILE_MODE_WR;
|
|
return CEPH_FILE_MODE_RD;
|
|
}
|
|
|
|
int ceph_caps_for_mode(int mode)
|
|
{
|
|
switch (mode) {
|
|
case CEPH_FILE_MODE_PIN:
|
|
return CEPH_CAP_PIN;
|
|
case CEPH_FILE_MODE_RD:
|
|
return CEPH_CAP_PIN | CEPH_CAP_FILE_SHARED |
|
|
CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE;
|
|
case CEPH_FILE_MODE_RDWR:
|
|
return CEPH_CAP_PIN | CEPH_CAP_FILE_SHARED |
|
|
CEPH_CAP_FILE_EXCL |
|
|
CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE |
|
|
CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER |
|
|
CEPH_CAP_AUTH_SHARED | CEPH_CAP_AUTH_EXCL |
|
|
CEPH_CAP_XATTR_SHARED | CEPH_CAP_XATTR_EXCL;
|
|
case CEPH_FILE_MODE_WR:
|
|
return CEPH_CAP_PIN | CEPH_CAP_FILE_SHARED |
|
|
CEPH_CAP_FILE_EXCL |
|
|
CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER |
|
|
CEPH_CAP_AUTH_SHARED | CEPH_CAP_AUTH_EXCL |
|
|
CEPH_CAP_XATTR_SHARED | CEPH_CAP_XATTR_EXCL;
|
|
}
|
|
return 0;
|
|
}
|