// 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;}