mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
24604f7e2b
All of these functions are only called from CephFS, so move them into ceph.ko, and drop the exports. Signed-off-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Some non-inline ceph helpers
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/ceph/types.h>
|
|
|
|
/*
|
|
* return true if @layout appears to be valid
|
|
*/
|
|
int ceph_file_layout_is_valid(const struct ceph_file_layout *layout)
|
|
{
|
|
__u32 su = layout->stripe_unit;
|
|
__u32 sc = layout->stripe_count;
|
|
__u32 os = layout->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;
|
|
}
|
|
|
|
void ceph_file_layout_from_legacy(struct ceph_file_layout *fl,
|
|
struct ceph_file_layout_legacy *legacy)
|
|
{
|
|
fl->stripe_unit = le32_to_cpu(legacy->fl_stripe_unit);
|
|
fl->stripe_count = le32_to_cpu(legacy->fl_stripe_count);
|
|
fl->object_size = le32_to_cpu(legacy->fl_object_size);
|
|
fl->pool_id = le32_to_cpu(legacy->fl_pg_pool);
|
|
if (fl->pool_id == 0 && fl->stripe_unit == 0 &&
|
|
fl->stripe_count == 0 && fl->object_size == 0)
|
|
fl->pool_id = -1;
|
|
}
|
|
|
|
void ceph_file_layout_to_legacy(struct ceph_file_layout *fl,
|
|
struct ceph_file_layout_legacy *legacy)
|
|
{
|
|
legacy->fl_stripe_unit = cpu_to_le32(fl->stripe_unit);
|
|
legacy->fl_stripe_count = cpu_to_le32(fl->stripe_count);
|
|
legacy->fl_object_size = cpu_to_le32(fl->object_size);
|
|
if (fl->pool_id >= 0)
|
|
legacy->fl_pg_pool = cpu_to_le32(fl->pool_id);
|
|
else
|
|
legacy->fl_pg_pool = 0;
|
|
}
|
|
|
|
int ceph_flags_to_mode(int flags)
|
|
{
|
|
int mode;
|
|
|
|
#ifdef O_DIRECTORY /* fixme */
|
|
if ((flags & O_DIRECTORY) == O_DIRECTORY)
|
|
return CEPH_FILE_MODE_PIN;
|
|
#endif
|
|
|
|
switch (flags & O_ACCMODE) {
|
|
case O_WRONLY:
|
|
mode = CEPH_FILE_MODE_WR;
|
|
break;
|
|
case O_RDONLY:
|
|
mode = CEPH_FILE_MODE_RD;
|
|
break;
|
|
case O_RDWR:
|
|
case O_ACCMODE: /* this is what the VFS does */
|
|
mode = CEPH_FILE_MODE_RDWR;
|
|
break;
|
|
}
|
|
#ifdef O_LAZY
|
|
if (flags & O_LAZY)
|
|
mode |= CEPH_FILE_MODE_LAZY;
|
|
#endif
|
|
|
|
return mode;
|
|
}
|
|
|
|
int ceph_caps_for_mode(int mode)
|
|
{
|
|
int caps = CEPH_CAP_PIN;
|
|
|
|
if (mode & CEPH_FILE_MODE_RD)
|
|
caps |= CEPH_CAP_FILE_SHARED |
|
|
CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE;
|
|
if (mode & CEPH_FILE_MODE_WR)
|
|
caps |= 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;
|
|
if (mode & CEPH_FILE_MODE_LAZY)
|
|
caps |= CEPH_CAP_FILE_LAZYIO;
|
|
|
|
return caps;
|
|
}
|