*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
#include <linux/fs_struct.h>
#include <linux/namei.h>
+#include <linux/pagemap.h>
+#include <linux/bio.h>
+#include <linux/xattr.h>
+#include <libcfs/libcfs.h>
#include <lustre_patchless_compat.h>
+#include <obd_support.h>
#ifdef HAVE_FS_STRUCT_RWLOCK
# define LOCK_FS_STRUCT(fs) write_lock(&(fs)->lock)
#define FS_HAS_FIEMAP (0)
#endif
-/* add a lustre compatible layer for crypto API */
-#include <linux/crypto.h>
-static inline int ll_crypto_hmac(struct crypto_hash *tfm,
- u8 *key, unsigned int *keylen,
- struct scatterlist *sg,
- unsigned int size, u8 *result)
-{
- struct hash_desc desc;
- int rv;
- desc.tfm = tfm;
- desc.flags = 0;
- rv = crypto_hash_setkey(desc.tfm, key, *keylen);
- if (rv) {
- CERROR("failed to hash setkey: %d\n", rv);
- return rv;
- }
- return crypto_hash_digest(&desc, sg, size, result);
-}
-
-static inline
-unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
-{
- return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
-}
-
#ifndef HAVE_SIMPLE_SETATTR
#define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
#endif
#ifdef HAVE_BVEC_ITER
#define bio_idx(bio) (bio->bi_iter.bi_idx)
#define bio_set_sector(bio, sector) (bio->bi_iter.bi_sector = sector)
+#define bvl_to_page(bvl) (bvl->bv_page)
#else
#define bio_idx(bio) (bio->bi_idx)
#define bio_set_sector(bio, sector) (bio->bi_sector = sector)
#ifndef HAVE_BIO_END_SECTOR
#define bio_end_sector(bio) (bio->bi_sector + bio_sectors(bio))
#endif
-#define bvec_iter_page(bvec, iter) (*bvec->bv_page)
+#define bvl_to_page(bvl) (bvl->bv_page)
#endif
#ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
#define queue_max_hw_segments(rq) queue_max_segments(rq)
#endif
+#ifdef HAVE_BLK_PLUG
+#define DECLARE_PLUG(plug) struct blk_plug plug
+#else /* !HAVE_BLK_PLUG */
+#define DECLARE_PLUG(name)
+#define blk_start_plug(plug) do {} while (0)
+#define blk_finish_plug(plug) do {} while (0)
+#endif
+
#ifdef HAVE_KMAP_ATOMIC_HAS_1ARG
#define ll_kmap_atomic(a, b) kmap_atomic(a)
#define ll_kunmap_atomic(a, b) kunmap_atomic(a)
# define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
#endif
+#ifndef XATTR_NAME_POSIX_ACL_ACCESS
+# define XATTR_NAME_POSIX_ACL_ACCESS POSIX_ACL_XATTR_ACCESS
+#endif
+
+#ifndef XATTR_NAME_POSIX_ACL_DEFAULT
+# define XATTR_NAME_POSIX_ACL_DEFAULT POSIX_ACL_XATTR_DEFAULT
+#endif
+
#ifndef HAVE_LM_XXX_LOCK_MANAGER_OPS
# define lm_compare_owner fl_compare_owner
#endif
return flag;
}
-#ifdef HAVE_VOID_MAKE_REQUEST_FN
-# define ll_mrf_ret void
-# define LL_MRF_RETURN(rc)
+#ifdef HAVE_QC_MAKE_REQUEST_FN
+# define ll_mrf_ret blk_qc_t
+# define LL_MRF_RETURN(rc) RETURN(BLK_QC_T_NONE)
#else
-# define ll_mrf_ret int
-# define LL_MRF_RETURN(rc) RETURN(rc)
+# ifdef HAVE_VOID_MAKE_REQUEST_FN
+# define ll_mrf_ret void
+# define LL_MRF_RETURN(rc)
+# else
+# define ll_mrf_ret int
+# define LL_MRF_RETURN(rc) RETURN(rc)
+# endif
#endif
#include <linux/fs.h>
# define set_file_inode(file, inode)
#endif
+#ifndef HAVE_FILE_INODE
+static inline struct inode *file_inode(const struct file *file)
+{
+ return file->f_path.dentry->d_inode;
+}
+#endif
+
#ifdef HAVE_OLDSIZE_TRUNCATE_PAGECACHE
#define ll_truncate_pagecache(inode, size) truncate_pagecache(inode, 0, size)
#else
#define ll_vfs_unlink(a, b) vfs_unlink(a, b)
#endif
+#ifndef HAVE_INODE_LOCK
+# define inode_lock(inode) mutex_lock(&(inode)->i_mutex)
+# define inode_unlock(inode) mutex_unlock(&(inode)->i_mutex)
+# define inode_trylock(inode) mutex_trylock(&(inode)->i_mutex)
+#endif
+
#ifndef HAVE_RADIX_EXCEPTION_ENTRY
static inline int radix_tree_exceptional_entry(void *arg)
{
security_inode_init_security(inode, dir, name, value, len)
#endif
+#ifndef bio_for_each_segment_all /* since kernel version 3.9 */
+#ifdef HAVE_BVEC_ITER
+#define bio_for_each_segment_all(bv, bio, it) \
+ for (it = 0, bv = (bio)->bi_io_vec; it < (bio)->bi_vcnt; it++, bv++)
+#else
+#define bio_for_each_segment_all(bv, bio, it) bio_for_each_segment(bv, bio, it)
+#endif
+#endif
+
+#ifdef HAVE_PID_NS_FOR_CHILDREN
+# define ll_task_pid_ns(task) ((task)->nsproxy->pid_ns_for_children)
+#else
+# define ll_task_pid_ns(task) ((task)->nsproxy->pid_ns)
+#endif
+
+#ifdef HAVE_FULL_NAME_HASH_3ARGS
+# define ll_full_name_hash(salt, name, len) full_name_hash(salt, name, len)
+#else
+# define ll_full_name_hash(salt, name, len) full_name_hash(name, len)
+#endif
+
+#ifdef HAVE_STRUCT_POSIX_ACL_XATTR
+# define posix_acl_xattr_header struct posix_acl_xattr_header
+# define posix_acl_xattr_entry struct posix_acl_xattr_entry
+# define GET_POSIX_ACL_XATTR_ENTRY(head) ((void *)((head) + 1))
+#else
+# define GET_POSIX_ACL_XATTR_ENTRY(head) ((head)->a_entries)
+#endif
+
+#ifdef HAVE_IOP_XATTR
+#ifdef HAVE_XATTR_HANDLER_FLAGS
+#define ll_setxattr generic_setxattr
+#define ll_getxattr generic_getxattr
+#define ll_removexattr generic_removexattr
+#else
+int ll_setxattr(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags);
+ssize_t ll_getxattr(struct dentry *dentry, const char *name,
+ void *buf, size_t buf_size);
+int ll_removexattr(struct dentry *dentry, const char *name);
+#endif /* ! HAVE_XATTR_HANDLER_FLAGS */
+#endif /* HAVE_IOP_XATTR */
+
+#ifndef HAVE_VFS_SETXATTR
+const struct xattr_handler *get_xattr_type(const char *name);
+
+#ifdef HAVE_XATTR_HANDLER_FLAGS
+static inline int
+__vfs_setxattr(struct dentry *dentry, struct inode *inode, const char *name,
+ const void *value, size_t size, int flags)
+{
+ const struct xattr_handler *handler;
+ int rc;
+
+ handler = get_xattr_type(name);
+ if (!handler)
+ return -ENXIO;
+
+#if defined(HAVE_XATTR_HANDLER_INODE_PARAM)
+ rc = handler->set(handler, dentry, inode, name, value, size,
+ XATTR_CREATE);
+#elif defined(HAVE_XATTR_HANDLER_SIMPLIFIED)
+ rc = handler->set(handler, dentry, name, value, size, XATTR_CREATE);
+#else
+ rc = handler->set(dentry, name, value, size, XATTR_CREATE,
+ handler->flags);
+#endif /* !HAVE_XATTR_HANDLER_INODE_PARAM */
+ return rc;
+}
+#else /* !HAVE_XATTR_HANDLER_FLAGS */
+static inline int
+__vfs_setxattr(struct dentry *dentry, struct inode *inode, const char *name,
+ const void *value, size_t size, int flags)
+{
+ return ll_setxattr(dentry, name, value, size, flags);
+}
+#endif /* HAVE_XATTR_HANDLER_FLAGS */
+#endif /* HAVE_VFS_SETXATTR */
+
+#ifndef HAVE_IOV_ITER_TRUNCATE
+static inline void iov_iter_truncate(struct iov_iter *i, u64 count)
+{
+ if (i->count > count)
+ i->count = count;
+}
+#endif
+
+#ifndef HAVE_IS_SXID
+static inline bool is_sxid(umode_t mode)
+{
+ return (mode & S_ISUID) || ((mode & S_ISGID) && (mode & S_IXGRP));
+}
+#endif
+
+#ifndef IS_NOSEC
+#define IS_NOSEC(inode) (!is_sxid(inode->i_mode))
+#endif
+
+#ifndef MS_NOSEC
+static inline void inode_has_no_xattr(struct inode *inode)
+{
+ return;
+}
+#endif
+
+#ifndef HAVE_FILE_OPERATIONS_READ_WRITE_ITER
+static inline void iov_iter_reexpand(struct iov_iter *i, size_t count)
+{
+ i->count = count;
+}
+
+static inline struct iovec iov_iter_iovec(const struct iov_iter *iter)
+{
+ return (struct iovec) {
+ .iov_base = iter->iov->iov_base + iter->iov_offset,
+ .iov_len = min(iter->count,
+ iter->iov->iov_len - iter->iov_offset),
+ };
+}
+
+#define iov_for_each(iov, iter, start) \
+ for (iter = (start); \
+ (iter).count && ((iov = iov_iter_iovec(&(iter))), 1); \
+ iov_iter_advance(&(iter), (iov).iov_len))
+
+static inline ssize_t
+generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
+{
+ struct iovec iov;
+ struct iov_iter i;
+ ssize_t bytes = 0;
+
+ iov_for_each(iov, i, *iter) {
+ ssize_t res;
+
+ res = generic_file_aio_read(iocb, &iov, 1, iocb->ki_pos);
+ if (res <= 0) {
+ if (bytes == 0)
+ bytes = res;
+ break;
+ }
+
+ bytes += res;
+ if (res < iov.iov_len)
+ break;
+ }
+
+ if (bytes > 0)
+ iov_iter_advance(iter, bytes);
+ return bytes;
+}
+
+static inline ssize_t
+__generic_file_write_iter(struct kiocb *iocb, struct iov_iter *iter)
+{
+ struct iovec iov;
+ struct iov_iter i;
+ ssize_t bytes = 0;
+
+ /* Since LLITE updates file size at the end of I/O in
+ * vvp_io_commit_write(), append write has to be done in atomic when
+ * there are multiple segments because otherwise each iteration to
+ * __generic_file_aio_write() will see original file size */
+ if (unlikely(iocb->ki_filp->f_flags & O_APPEND && iter->nr_segs > 1)) {
+ struct iovec *iov_copy;
+ int count = 0;
+
+ OBD_ALLOC(iov_copy, sizeof(*iov_copy) * iter->nr_segs);
+ if (!iov_copy)
+ return -ENOMEM;
+
+ iov_for_each(iov, i, *iter)
+ iov_copy[count++] = iov;
+
+ bytes = __generic_file_aio_write(iocb, iov_copy, count,
+ &iocb->ki_pos);
+ OBD_FREE(iov_copy, sizeof(*iov_copy) * iter->nr_segs);
+
+ if (bytes > 0)
+ iov_iter_advance(iter, bytes);
+ return bytes;
+ }
+
+ iov_for_each(iov, i, *iter) {
+ ssize_t res;
+
+ res = __generic_file_aio_write(iocb, &iov, 1, &iocb->ki_pos);
+ if (res <= 0) {
+ if (bytes == 0)
+ bytes = res;
+ break;
+ }
+
+ bytes += res;
+ if (res < iov.iov_len)
+ break;
+ }
+
+ if (bytes > 0)
+ iov_iter_advance(iter, bytes);
+ return bytes;
+}
+#endif /* HAVE_FILE_OPERATIONS_READ_WRITE_ITER */
+
+static inline void __user *get_vmf_address(struct vm_fault *vmf)
+{
+#ifdef HAVE_VM_FAULT_ADDRESS
+ return (void __user *)vmf->address;
+#else
+ return vmf->virtual_address;
+#endif
+}
+
+#ifdef HAVE_VM_OPS_USE_VM_FAULT_ONLY
+# define ll_filemap_fault(vma, vmf) filemap_fault(vmf)
+#else
+# define ll_filemap_fault(vma, vmf) filemap_fault(vma, vmf)
+#endif
+
#endif /* _LUSTRE_COMPAT_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff