33d4909ccc
There is certainly no reason not to report this. The only real downside to allowing the user to set it is that you don't get default values by zeroing the layout struct (the default is -1). Signed-off-by: Sage Weil <sage@newdream.net>
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
#ifndef FS_CEPH_IOCTL_H
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#define FS_CEPH_IOCTL_H
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#include <linux/ioctl.h>
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#include <linux/types.h>
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#define CEPH_IOCTL_MAGIC 0x97
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/* just use u64 to align sanely on all archs */
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struct ceph_ioctl_layout {
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__u64 stripe_unit, stripe_count, object_size;
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__u64 data_pool;
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__s64 preferred_osd;
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};
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#define CEPH_IOC_GET_LAYOUT _IOR(CEPH_IOCTL_MAGIC, 1, \
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struct ceph_ioctl_layout)
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#define CEPH_IOC_SET_LAYOUT _IOW(CEPH_IOCTL_MAGIC, 2, \
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struct ceph_ioctl_layout)
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/*
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* Extract identity, address of the OSD and object storing a given
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* file offset.
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*/
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struct ceph_ioctl_dataloc {
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__u64 file_offset; /* in+out: file offset */
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__u64 object_offset; /* out: offset in object */
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__u64 object_no; /* out: object # */
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__u64 object_size; /* out: object size */
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char object_name[64]; /* out: object name */
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__u64 block_offset; /* out: offset in block */
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__u64 block_size; /* out: block length */
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__s64 osd; /* out: osd # */
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struct sockaddr_storage osd_addr; /* out: osd address */
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};
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#define CEPH_IOC_GET_DATALOC _IOWR(CEPH_IOCTL_MAGIC, 3, \
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struct ceph_ioctl_dataloc)
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#endif
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