* GPL HEADER END
*/
/*
- * Copyright (c) 2012, 2013, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
* Use is subject to license terms.
*
* Author: Johann Lombardi <johann.lombardi@intel.com>
*/
-
-#include <lustre/lustre_idl.h>
+#include <llog_swab.h>
+#include <lustre_swab.h>
#include <obd.h>
#include <md_object.h>
/* If a field is added in struct lustre_mdt_attrs, zero it explicitly
* and change the test below. */
- LASSERT(sizeof(*lma) ==
- (offsetof(struct lustre_mdt_attrs, lma_self_fid) +
- sizeof(lma->lma_self_fid)));
-};
+ CLASSERT(sizeof(*lma) ==
+ (offsetof(struct lustre_mdt_attrs, lma_self_fid) +
+ sizeof(lma->lma_self_fid)));
+}
EXPORT_SYMBOL(lustre_lma_init);
/**
*/
void lustre_lma_swab(struct lustre_mdt_attrs *lma)
{
- /* Use LUSTRE_MSG_MAGIC to detect local endianess. */
- if (LUSTRE_MSG_MAGIC != cpu_to_le32(LUSTRE_MSG_MAGIC)) {
- __swab32s(&lma->lma_compat);
- __swab32s(&lma->lma_incompat);
- lustre_swab_lu_fid(&lma->lma_self_fid);
- }
-};
+#ifdef __BIG_ENDIAN
+ __swab32s(&lma->lma_compat);
+ __swab32s(&lma->lma_incompat);
+ lustre_swab_lu_fid(&lma->lma_self_fid);
+#endif
+}
EXPORT_SYMBOL(lustre_lma_swab);
+void lustre_loa_init(struct lustre_ost_attrs *loa, const struct lu_fid *fid,
+ __u32 compat, __u32 incompat)
+{
+ CLASSERT(sizeof(*loa) == LMA_OLD_SIZE);
+
+ memset(&loa->loa_parent_fid, 0,
+ sizeof(*loa) - offsetof(typeof(*loa), loa_parent_fid));
+ lustre_lma_init(&loa->loa_lma, fid, compat, incompat);
+}
+EXPORT_SYMBOL(lustre_loa_init);
+
/**
- * Swab, if needed, SOM structure which is stored on-disk in little-endian
- * order.
+ * Swab, if needed, LOA (for OST-object only) structure with LMA EA and PFID EA
+ * combined together are stored on-disk in little-endian order.
*
- * \param attrs - is a pointer to the SOM structure to be swabbed.
+ * \param[in] loa - the pointer to the LOA structure to be swabbed.
+ * \param[in] to_cpu - to indicate swab for CPU order or not.
*/
-void lustre_som_swab(struct som_attrs *attrs)
+void lustre_loa_swab(struct lustre_ost_attrs *loa, bool to_cpu)
{
- /* Use LUSTRE_MSG_MAGIC to detect local endianess. */
- if (LUSTRE_MSG_MAGIC != cpu_to_le32(LUSTRE_MSG_MAGIC)) {
- __swab32s(&attrs->som_compat);
- __swab32s(&attrs->som_incompat);
- __swab64s(&attrs->som_ioepoch);
- __swab64s(&attrs->som_size);
- __swab64s(&attrs->som_blocks);
- __swab64s(&attrs->som_mountid);
+ struct lustre_mdt_attrs *lma = &loa->loa_lma;
+#ifdef __BIG_ENDIAN
+ __u32 compat = lma->lma_compat;
+#endif
+
+ lustre_lma_swab(lma);
+#ifdef __BIG_ENDIAN
+ if (to_cpu)
+ compat = lma->lma_compat;
+
+ if (compat & LMAC_STRIPE_INFO) {
+ lustre_swab_lu_fid(&loa->loa_parent_fid);
+ __swab32s(&loa->loa_stripe_size);
}
-};
-EXPORT_SYMBOL(lustre_som_swab);
+ if (compat & LMAC_COMP_INFO) {
+ __swab32s(&loa->loa_comp_id);
+ __swab64s(&loa->loa_comp_start);
+ __swab64s(&loa->loa_comp_end);
+ }
+#endif
+}
+EXPORT_SYMBOL(lustre_loa_swab);
-/*
- * Swab and extract SOM attributes from on-disk xattr.
+/**
+ * Swab, if needed, SOM structure which is stored on-disk in little-endian
+ * order.
*
- * \param buf - is a buffer containing the on-disk SOM extended attribute.
- * \param rc - is the SOM xattr stored in \a buf
- * \param msd - is the md_som_data structure where to extract SOM attributes.
+ * \param attrs - is a pointer to the SOM structure to be swabbed.
*/
-int lustre_buf2som(void *buf, int rc, struct md_som_data *msd)
+void lustre_som_swab(struct lustre_som_attrs *attrs)
{
- struct som_attrs *attrs = (struct som_attrs *)buf;
- ENTRY;
-
- if (rc == 0 || rc == -ENODATA)
- /* no SOM attributes */
- RETURN(-ENODATA);
-
- if (rc < 0)
- /* error hit while fetching xattr */
- RETURN(rc);
-
- /* check SOM compatibility */
- if (attrs->som_incompat & ~cpu_to_le32(SOM_INCOMPAT_SUPP))
- RETURN(-ENODATA);
-
- /* unpack SOM attributes */
- lustre_som_swab(attrs);
-
- /* fill in-memory msd structure */
- msd->msd_compat = attrs->som_compat;
- msd->msd_incompat = attrs->som_incompat;
- msd->msd_ioepoch = attrs->som_ioepoch;
- msd->msd_size = attrs->som_size;
- msd->msd_blocks = attrs->som_blocks;
- msd->msd_mountid = attrs->som_mountid;
-
- RETURN(0);
+#ifdef __BIG_ENDIAN
+ __swab16s(&attrs->lsa_valid);
+ __swab64s(&attrs->lsa_size);
+ __swab64s(&attrs->lsa_blocks);
+#endif
}
-EXPORT_SYMBOL(lustre_buf2som);
+EXPORT_SYMBOL(lustre_som_swab);
/**
* Swab, if needed, HSM structure which is stored on-disk in little-endian
*/
void lustre_hsm_swab(struct hsm_attrs *attrs)
{
- /* Use LUSTRE_MSG_MAGIC to detect local endianess. */
- if (LUSTRE_MSG_MAGIC != cpu_to_le32(LUSTRE_MSG_MAGIC)) {
- __swab32s(&attrs->hsm_compat);
- __swab32s(&attrs->hsm_flags);
- __swab64s(&attrs->hsm_arch_id);
- __swab64s(&attrs->hsm_arch_ver);
- }
-};
-EXPORT_SYMBOL(lustre_hsm_swab);
+#ifdef __BIG_ENDIAN
+ __swab32s(&attrs->hsm_compat);
+ __swab32s(&attrs->hsm_flags);
+ __swab64s(&attrs->hsm_arch_id);
+ __swab64s(&attrs->hsm_arch_ver);
+#endif
+}
/*
* Swab and extract HSM attributes from on-disk xattr.
git://git.whamcloud.com / fs / lustre-release.git / blobdiff