From: Allison Henderson <allison.henderson@xxxxxxxxxx>
This patch adds a new file ioctl to retrieve the parent pointer of a
given inode
Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>
[djwong: move new ioctl to xfs_fs_staging.h, adjust to new ondisk format]
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
fs/xfs/Makefile | 1
fs/xfs/libxfs/xfs_fs.h | 1
fs/xfs/libxfs/xfs_fs_staging.h | 66 ++++++++++++++++
fs/xfs/libxfs/xfs_ondisk.h | 4 +
fs/xfs/libxfs/xfs_parent.c | 62 +++++++++++++++
fs/xfs/libxfs/xfs_parent.h | 25 ++++++
fs/xfs/xfs_ioctl.c | 145 ++++++++++++++++++++++++++++++++++++
fs/xfs/xfs_parent_utils.c | 161 ++++++++++++++++++++++++++++++++++++++++
fs/xfs/xfs_parent_utils.h | 20 +++++
fs/xfs/xfs_trace.c | 1
fs/xfs/xfs_trace.h | 73 ++++++++++++++++++
11 files changed, 558 insertions(+), 1 deletion(-)
create mode 100644 fs/xfs/xfs_parent_utils.c
create mode 100644 fs/xfs/xfs_parent_utils.h
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile
index 5a358113ad9d7..49480c81eaeab 100644
--- a/fs/xfs/Makefile
+++ b/fs/xfs/Makefile
@@ -89,6 +89,7 @@ xfs-y += xfs_aops.o \
xfs_mount.o \
xfs_mru_cache.o \
xfs_pwork.o \
+ xfs_parent_utils.o \
xfs_reflink.o \
xfs_stats.o \
xfs_super.o \
diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index 63a145e50350b..e92b6a9612a95 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -811,6 +811,7 @@ struct xfs_scrub_metadata {
/* XFS_IOC_GETFSMAP ------ hoisted 59 */
#define XFS_IOC_SCRUB_METADATA _IOWR('X', 60, struct xfs_scrub_metadata)
#define XFS_IOC_AG_GEOMETRY _IOWR('X', 61, struct xfs_ag_geometry)
+/* XFS_IOC_GETPARENTS ---- staging 62 */
/*
* ioctl commands that replace IRIX syssgi()'s
diff --git a/fs/xfs/libxfs/xfs_fs_staging.h b/fs/xfs/libxfs/xfs_fs_staging.h
index e3d9f3b32b078..e0650af055895 100644
--- a/fs/xfs/libxfs/xfs_fs_staging.h
+++ b/fs/xfs/libxfs/xfs_fs_staging.h
@@ -104,4 +104,70 @@ struct xfs_exch_range {
#define XFS_IOC_EXCHANGE_RANGE _IOWR('X', 129, struct xfs_exch_range)
+/* Iterating parent pointers of files. */
+
+/* return parents of the handle, not the open fd */
+#define XFS_GETPARENTS_IFLAG_HANDLE (1U << 0)
+
+/* target was the root directory */
+#define XFS_GETPARENTS_OFLAG_ROOT (1U << 1)
+
+/* Cursor is done iterating pptrs */
+#define XFS_GETPARENTS_OFLAG_DONE (1U << 2)
+
+#define XFS_GETPARENTS_FLAG_ALL (XFS_GETPARENTS_IFLAG_HANDLE | \
+ XFS_GETPARENTS_OFLAG_ROOT | \
+ XFS_GETPARENTS_OFLAG_DONE)
+
+/* Get an inode parent pointer through ioctl */
+struct xfs_getparents_rec {
+ __u64 gpr_ino; /* Inode number */
+ __u32 gpr_gen; /* Inode generation */
+ __u32 gpr_pad; /* Reserved */
+ __u64 gpr_rsvd; /* Reserved */
+ __u8 gpr_name[]; /* File name and null terminator */
+};
+
+/* Iterate through an inodes parent pointers */
+struct xfs_getparents {
+ /* File handle, if XFS_GETPARENTS_IFLAG_HANDLE is set */
+ struct xfs_handle gp_handle;
+
+ /*
+ * Structure to track progress in iterating the parent pointers.
+ * Must be initialized to zeroes before the first ioctl call, and
+ * not touched by callers after that.
+ */
+ struct xfs_attrlist_cursor gp_cursor;
+
+ /* Operational flags: XFS_GETPARENTS_*FLAG* */
+ __u32 gp_flags;
+
+ /* Must be set to zero */
+ __u32 gp_reserved;
+
+ /* Size of the buffer in bytes, including this header */
+ __u32 gp_bufsize;
+
+ /* # of entries filled in (output) */
+ __u32 gp_count;
+
+ /* Must be set to zero */
+ __u64 gp_reserved2[5];
+
+ /* Byte offset of each record within the buffer */
+ __u32 gp_offsets[];
+};
+
+static inline struct xfs_getparents_rec*
+xfs_getparents_rec(
+ struct xfs_getparents *info,
+ unsigned int idx)
+{
+ return (struct xfs_getparents_rec *)((char *)info +
+ info->gp_offsets[idx]);
+}
+
+#define XFS_IOC_GETPARENTS _IOWR('X', 62, struct xfs_getparents)
+
#endif /* __XFS_FS_STAGING_H__ */
diff --git a/fs/xfs/libxfs/xfs_ondisk.h b/fs/xfs/libxfs/xfs_ondisk.h
index d9c988c5ad692..bffd39242d487 100644
--- a/fs/xfs/libxfs/xfs_ondisk.h
+++ b/fs/xfs/libxfs/xfs_ondisk.h
@@ -155,6 +155,10 @@ xfs_check_ondisk_structs(void)
XFS_CHECK_OFFSET(struct xfs_efi_log_format_32, efi_extents, 16);
XFS_CHECK_OFFSET(struct xfs_efi_log_format_64, efi_extents, 16);
+ /* parent pointer ioctls */
+ XFS_CHECK_STRUCT_SIZE(struct xfs_getparents_rec, 24);
+ XFS_CHECK_STRUCT_SIZE(struct xfs_getparents, 96);
+
/*
* The v5 superblock format extended several v4 header structures with
* additional data. While new fields are only accessible on v5
diff --git a/fs/xfs/libxfs/xfs_parent.c b/fs/xfs/libxfs/xfs_parent.c
index 1bff67f8f1176..48a2dfcc465fa 100644
--- a/fs/xfs/libxfs/xfs_parent.c
+++ b/fs/xfs/libxfs/xfs_parent.c
@@ -304,3 +304,65 @@ xfs_parent_args_free(
{
kmem_cache_free(xfs_parent_args_cache, ppargs);
}
+
+/* Convert an ondisk parent pointer to the incore format. */
+void
+xfs_parent_irec_from_disk(
+ struct xfs_parent_name_irec *irec,
+ const struct xfs_parent_name_rec *rec,
+ const void *value,
+ unsigned int valuelen)
+{
+ irec->p_ino = be64_to_cpu(rec->p_ino);
+ irec->p_gen = be32_to_cpu(rec->p_gen);
+ irec->p_namehash = be32_to_cpu(rec->p_namehash);
+ irec->p_namelen = valuelen;
+ memcpy(irec->p_name, value, valuelen);
+}
+
+/* Convert an incore parent pointer to the ondisk attr name format. */
+void
+xfs_parent_irec_to_disk(
+ struct xfs_parent_name_rec *rec,
+ const struct xfs_parent_name_irec *irec)
+{
+ rec->p_ino = cpu_to_be64(irec->p_ino);
+ rec->p_gen = cpu_to_be32(irec->p_gen);
+ rec->p_namehash = cpu_to_be32(irec->p_namehash);
+}
+
+/* Is this a valid incore parent pointer? */
+bool
+xfs_parent_verify_irec(
+ struct xfs_mount *mp,
+ const struct xfs_parent_name_irec *irec)
+{
+ struct xfs_name dname = {
+ .name = irec->p_name,
+ .len = irec->p_namelen,
+ };
+
+ if (!xfs_verify_dir_ino(mp, irec->p_ino))
+ return false;
+ if (!xfs_parent_valuecheck(mp, irec->p_name, irec->p_namelen))
+ return false;
+ if (!xfs_dir2_namecheck(irec->p_name, irec->p_namelen))
+ return false;
+ if (irec->p_namehash != xfs_dir2_hashname(mp, &dname))
+ return false;
+ return true;
+}
+
+/* Compute p_namehash for the this parent pointer. */
+void
+xfs_parent_irec_hashname(
+ struct xfs_mount *mp,
+ struct xfs_parent_name_irec *irec)
+{
+ struct xfs_name dname = {
+ .name = irec->p_name,
+ .len = irec->p_namelen,
+ };
+
+ irec->p_namehash = xfs_dir2_hashname(mp, &dname);
+}
diff --git a/fs/xfs/libxfs/xfs_parent.h b/fs/xfs/libxfs/xfs_parent.h
index c68c501388e82..e43ae5a7df826 100644
--- a/fs/xfs/libxfs/xfs_parent.h
+++ b/fs/xfs/libxfs/xfs_parent.h
@@ -127,4 +127,29 @@ xfs_parent_finish(
xfs_parent_args_free(mp, ppargs);
}
+/*
+ * Incore version of a parent pointer, also contains dirent name so callers
+ * can pass/obtain all the parent pointer information in a single structure
+ */
+struct xfs_parent_name_irec {
+ /* Parent pointer attribute name fields */
+ xfs_ino_t p_ino;
+ uint32_t p_gen;
+ xfs_dahash_t p_namehash;
+
+ /* Parent pointer attribute value fields */
+ uint8_t p_namelen;
+ unsigned char p_name[MAXNAMELEN];
+};
+
+void xfs_parent_irec_from_disk(struct xfs_parent_name_irec *irec,
+ const struct xfs_parent_name_rec *rec, const void *value,
+ unsigned int valuelen);
+void xfs_parent_irec_to_disk(struct xfs_parent_name_rec *rec,
+ const struct xfs_parent_name_irec *irec);
+void xfs_parent_irec_hashname(struct xfs_mount *mp,
+ struct xfs_parent_name_irec *irec);
+bool xfs_parent_verify_irec(struct xfs_mount *mp,
+ const struct xfs_parent_name_irec *irec);
+
#endif /* __XFS_PARENT_H__ */
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index 968412c0ba59e..5db70a11151dd 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -37,6 +37,7 @@
#include "xfs_health.h"
#include "xfs_reflink.h"
#include "xfs_ioctl.h"
+#include "xfs_parent_utils.h"
#include "xfs_xattr.h"
#include "xfs_rtbitmap.h"
#include "xfs_xchgrange.h"
@@ -1669,6 +1670,147 @@ xfs_ioc_scrub_metadata(
return 0;
}
+/*
+ * IOCTL routine to get the parent pointers of an inode and return it to user
+ * space. Caller must pass a buffer space containing a struct xfs_getparents,
+ * followed by a region large enough to contain an array of struct
+ * xfs_getparents_rec of a size specified in gp_bufsize. If the inode contains
+ * more parent pointers than can fit in the buffer space, caller may re-call
+ * the function using the returned gp_cursor to resume iteration. The
+ * number of xfs_getparents_rec returned will be stored in gp_count.
+ *
+ * Returns 0 on success or non-zero on failure
+ */
+STATIC int
+xfs_ioc_get_parent_pointer(
+ struct file *filp,
+ void __user *arg)
+{
+ struct xfs_getparents *ppi = NULL;
+ int error = 0;
+ struct xfs_inode *file_ip = XFS_I(file_inode(filp));
+ struct xfs_inode *call_ip = file_ip;
+ struct xfs_mount *mp = file_ip->i_mount;
+ void __user *o_pptr;
+ struct xfs_getparents_rec *i_pptr;
+ unsigned int bytes;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ /* Allocate an xfs_getparents to put the user data */
+ ppi = kvmalloc(sizeof(struct xfs_getparents), GFP_KERNEL);
+ if (!ppi)
+ return -ENOMEM;
+
+ /* Copy the data from the user */
+ error = copy_from_user(ppi, arg, sizeof(struct xfs_getparents));
+ if (error) {
+ error = -EFAULT;
+ goto out;
+ }
+
+ /* Check size of buffer requested by user */
+ if (ppi->gp_bufsize > XFS_XATTR_LIST_MAX) {
+ error = -ENOMEM;
+ goto out;
+ }
+ if (ppi->gp_bufsize < sizeof(struct xfs_getparents)) {
+ error = -EINVAL;
+ goto out;
+ }
+
+ if (ppi->gp_flags & ~XFS_GETPARENTS_FLAG_ALL) {
+ error = -EINVAL;
+ goto out;
+ }
+ ppi->gp_flags &= ~(XFS_GETPARENTS_OFLAG_ROOT | XFS_GETPARENTS_OFLAG_DONE);
+
+ /*
+ * Now that we know how big the trailing buffer is, expand
+ * our kernel xfs_getparents to be the same size
+ */
+ ppi = kvrealloc(ppi, sizeof(struct xfs_getparents), ppi->gp_bufsize,
+ GFP_KERNEL | __GFP_ZERO);
+ if (!ppi)
+ return -ENOMEM;
+
+ if (ppi->gp_flags & XFS_GETPARENTS_IFLAG_HANDLE) {
+ struct xfs_handle *hanp = &ppi->gp_handle;
+
+ if (memcmp(&hanp->ha_fsid, mp->m_fixedfsid,
+ sizeof(xfs_fsid_t))) {
+ error = -EINVAL;
+ goto out;
+ }
+
+ if (hanp->ha_fid.fid_ino != file_ip->i_ino) {
+ error = xfs_iget(mp, NULL, hanp->ha_fid.fid_ino,
+ XFS_IGET_UNTRUSTED, 0, &call_ip);
+ if (error)
+ goto out;
+
+ /*
+ * Reload the incore unlinked list to avoid failure in
+ * inodegc. Use an unlocked check here because
+ * unrecovered unlinked inodes should be somewhat rare.
+ */
+ if (xfs_inode_unlinked_incomplete(call_ip)) {
+ error = xfs_inode_reload_unlinked(call_ip);
+ if (error)
+ goto out;
+ }
+ }
+
+ if (VFS_I(call_ip)->i_generation != hanp->ha_fid.fid_gen) {
+ error = -EINVAL;
+ goto out;
+ }
+ }
+
+ /* Get the parent pointers */
+ error = xfs_getparent_pointers(call_ip, ppi);
+ if (error)
+ goto out;
+
+ /*
+ * If we ran out of buffer space before copying any parent pointers at
+ * all, the caller's buffer was too short. Tell userspace that, erm,
+ * the message is too long.
+ */
+ if (ppi->gp_count == 0 && !(ppi->gp_flags & XFS_GETPARENTS_OFLAG_DONE)) {
+ error = -EMSGSIZE;
+ goto out;
+ }
+
+ /* Copy the parent pointer head back to the user */
+ bytes = xfs_getparents_arraytop(ppi, ppi->gp_count);
+ error = copy_to_user(arg, ppi, bytes);
+ if (error) {
+ error = -EFAULT;
+ goto out;
+ }
+
+ if (ppi->gp_count == 0)
+ goto out;
+
+ /* Copy the parent pointer records back to the user. */
+ o_pptr = (__user char*)arg + ppi->gp_offsets[ppi->gp_count - 1];
+ i_pptr = xfs_getparents_rec(ppi, ppi->gp_count - 1);
+ bytes = ((char *)ppi + ppi->gp_bufsize) - (char *)i_pptr;
+ error = copy_to_user(o_pptr, i_pptr, bytes);
+ if (error) {
+ error = -EFAULT;
+ goto out;
+ }
+
+out:
+ if (call_ip != file_ip)
+ xfs_irele(call_ip);
+ kvfree(ppi);
+ return error;
+}
+
int
xfs_ioc_swapext(
struct xfs_swapext *sxp)
@@ -1947,7 +2089,8 @@ xfs_file_ioctl(
case XFS_IOC_FSGETXATTRA:
return xfs_ioc_fsgetxattra(ip, arg);
-
+ case XFS_IOC_GETPARENTS:
+ return xfs_ioc_get_parent_pointer(filp, arg);
case XFS_IOC_GETBMAP:
case XFS_IOC_GETBMAPA:
case XFS_IOC_GETBMAPX:
diff --git a/fs/xfs/xfs_parent_utils.c b/fs/xfs/xfs_parent_utils.c
new file mode 100644
index 0000000000000..95eeac1e79c21
--- /dev/null
+++ b/fs/xfs/xfs_parent_utils.c
@@ -0,0 +1,161 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022-2024 Oracle.
+ * All rights reserved.
+ */
+#include "xfs.h"
+#include "xfs_fs.h"
+#include "xfs_format.h"
+#include "xfs_log_format.h"
+#include "xfs_shared.h"
+#include "xfs_trans_resv.h"
+#include "xfs_mount.h"
+#include "xfs_bmap_btree.h"
+#include "xfs_inode.h"
+#include "xfs_error.h"
+#include "xfs_trace.h"
+#include "xfs_trans.h"
+#include "xfs_da_format.h"
+#include "xfs_da_btree.h"
+#include "xfs_attr.h"
+#include "xfs_ioctl.h"
+#include "xfs_parent.h"
+#include "xfs_da_btree.h"
+#include "xfs_parent_utils.h"
+#include "xfs_health.h"
+
+struct xfs_getparent_ctx {
+ struct xfs_attr_list_context context;
+ struct xfs_parent_name_irec pptr_irec;
+ struct xfs_getparents *ppi;
+};
+
+static inline unsigned int
+xfs_getparents_rec_sizeof(
+ const struct xfs_parent_name_irec *irec)
+{
+ return round_up(sizeof(struct xfs_getparents_rec) + irec->p_namelen + 1,
+ sizeof(uint32_t));
+}
+
+static void
+xfs_getparent_listent(
+ struct xfs_attr_list_context *context,
+ int flags,
+ unsigned char *name,
+ int namelen,
+ void *value,
+ int valuelen)
+{
+ struct xfs_getparent_ctx *gp;
+ struct xfs_getparents *ppi;
+ struct xfs_getparents_rec *pptr;
+ struct xfs_parent_name_rec *rec = (void *)name;
+ struct xfs_parent_name_irec *irec;
+ struct xfs_mount *mp = context->dp->i_mount;
+ int arraytop;
+
+ gp = container_of(context, struct xfs_getparent_ctx, context);
+ ppi = gp->ppi;
+ irec = &gp->pptr_irec;
+
+ /* Ignore non-parent xattrs */
+ if (!(flags & XFS_ATTR_PARENT))
+ return;
+
+ /*
+ * Report corruption for anything that doesn't look like a parent
+ * pointer. The attr list functions filtered out INCOMPLETE attrs.
+ */
+ if (XFS_IS_CORRUPT(mp,
+ !xfs_parent_namecheck(mp, rec, namelen, flags)) ||
+ XFS_IS_CORRUPT(mp,
+ !xfs_parent_valuecheck(mp, value, valuelen)) ||
+ XFS_IS_CORRUPT(mp,
+ !xfs_parent_hashcheck(mp, rec, value, valuelen))) {
+ xfs_inode_mark_sick(context->dp, XFS_SICK_INO_PARENT);
+ context->seen_enough = -EFSCORRUPTED;
+ return;
+ }
+
+ xfs_parent_irec_from_disk(&gp->pptr_irec, rec, value, valuelen);
+
+ /*
+ * We found a parent pointer, but we've filled up the buffer. Signal
+ * to the caller that we did /not/ reach the end of the parent pointer
+ * recordset.
+ */
+ arraytop = xfs_getparents_arraytop(ppi, ppi->gp_count + 1);
+ context->firstu -= xfs_getparents_rec_sizeof(irec);
+ if (context->firstu < arraytop) {
+ context->seen_enough = 1;
+ return;
+ }
+
+ trace_xfs_getparent_listent(context->dp, ppi, irec);
+
+ /* Format the parent pointer directly into the caller buffer. */
+ ppi->gp_offsets[ppi->gp_count] = context->firstu;
+ pptr = xfs_getparents_rec(ppi, ppi->gp_count);
+ pptr->gpr_ino = irec->p_ino;
+ pptr->gpr_gen = irec->p_gen;
+ pptr->gpr_pad = 0;
+ pptr->gpr_rsvd = 0;
+
+ memcpy(pptr->gpr_name, irec->p_name, irec->p_namelen);
+ pptr->gpr_name[irec->p_namelen] = 0;
+ ppi->gp_count++;
+}
+
+/* Retrieve the parent pointers for a given inode. */
+int
+xfs_getparent_pointers(
+ struct xfs_inode *ip,
+ struct xfs_getparents *ppi)
+{
+ struct xfs_getparent_ctx *gp;
+ int error;
+
+ gp = kzalloc(sizeof(struct xfs_getparent_ctx), GFP_KERNEL);
+ if (!gp)
+ return -ENOMEM;
+ gp->ppi = ppi;
+ gp->context.dp = ip;
+ gp->context.resynch = 1;
+ gp->context.put_listent = xfs_getparent_listent;
+ gp->context.bufsize = round_down(ppi->gp_bufsize, sizeof(uint32_t));
+ gp->context.firstu = gp->context.bufsize;
+
+ /* Copy the cursor provided by caller */
+ memcpy(&gp->context.cursor, &ppi->gp_cursor,
+ sizeof(struct xfs_attrlist_cursor));
+ ppi->gp_count = 0;
+
+ trace_xfs_getparent_pointers(ip, ppi, &gp->context.cursor);
+
+ error = xfs_attr_list(&gp->context);
+ if (error)
+ goto out_free;
+ if (gp->context.seen_enough < 0) {
+ error = gp->context.seen_enough;
+ goto out_free;
+ }
+
+ /* Is this the root directory? */
+ if (ip->i_ino == ip->i_mount->m_sb.sb_rootino)
+ ppi->gp_flags |= XFS_GETPARENTS_OFLAG_ROOT;
+
+ /*
+ * If we did not run out of buffer space, then we reached the end of
+ * the pptr recordset, so set the DONE flag.
+ */
+ if (gp->context.seen_enough == 0)
+ ppi->gp_flags |= XFS_GETPARENTS_OFLAG_DONE;
+
+ /* Update the caller with the current cursor position */
+ memcpy(&ppi->gp_cursor, &gp->context.cursor,
+ sizeof(struct xfs_attrlist_cursor));
+out_free:
+ kfree(gp);
+ return error;
+}
diff --git a/fs/xfs/xfs_parent_utils.h b/fs/xfs/xfs_parent_utils.h
new file mode 100644
index 0000000000000..2a1d5306a02c2
--- /dev/null
+++ b/fs/xfs/xfs_parent_utils.h
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022-2024 Oracle.
+ * All rights reserved.
+ */
+#ifndef __XFS_PARENT_UTILS_H__
+#define __XFS_PARENT_UTILS_H__
+
+static inline unsigned int
+xfs_getparents_arraytop(
+ const struct xfs_getparents *ppi,
+ unsigned int nr)
+{
+ return sizeof(struct xfs_getparents) +
+ (nr * sizeof(ppi->gp_offsets[0]));
+}
+
+int xfs_getparent_pointers(struct xfs_inode *ip, struct xfs_getparents *ppi);
+
+#endif /* __XFS_PARENT_UTILS_H__ */
diff --git a/fs/xfs/xfs_trace.c b/fs/xfs/xfs_trace.c
index e38814f4380c8..7ccb7b3473943 100644
--- a/fs/xfs/xfs_trace.c
+++ b/fs/xfs/xfs_trace.c
@@ -42,6 +42,7 @@
#include "xfs_bmap.h"
#include "xfs_swapext.h"
#include "xfs_xchgrange.h"
+#include "xfs_parent.h"
/*
* We include this last to have the helpers above available for the trace
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index 1dac853aa659e..070c76f443737 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -83,6 +83,9 @@ struct xfs_perag;
struct xfs_bmap_intent;
struct xfs_swapext_intent;
struct xfs_swapext_req;
+struct xfs_getparents;
+struct xfs_parent_name_irec;
+struct xfs_attrlist_cursor_kern;
#define XFS_ATTR_FILTER_FLAGS \
{ XFS_ATTR_ROOT, "ROOT" }, \
@@ -4981,6 +4984,76 @@ TRACE_EVENT(xfs_swapext_delta_nextents,
__entry->d_nexts1, __entry->d_nexts2)
);
+TRACE_EVENT(xfs_getparent_listent,
+ TP_PROTO(struct xfs_inode *ip, const struct xfs_getparents *ppi,
+ const struct xfs_parent_name_irec *irec),
+ TP_ARGS(ip, ppi, irec),
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(xfs_ino_t, ino)
+ __field(unsigned int, count)
+ __field(unsigned int, bufsize)
+ __field(xfs_ino_t, parent_ino)
+ __field(unsigned int, parent_gen)
+ __field(unsigned int, namelen)
+ __dynamic_array(char, name, irec->p_namelen)
+ ),
+ TP_fast_assign(
+ __entry->dev = ip->i_mount->m_super->s_dev;
+ __entry->ino = ip->i_ino;
+ __entry->count = ppi->gp_count;
+ __entry->bufsize = ppi->gp_bufsize;
+ __entry->parent_ino = irec->p_ino;
+ __entry->parent_gen = irec->p_gen;
+ __entry->namelen = irec->p_namelen;
+ memcpy(__get_str(name), irec->p_name, irec->p_namelen);
+ ),
+ TP_printk("dev %d:%d ino 0x%llx bufsize %u count %u: parent_ino 0x%llx parent_gen 0x%x name '%.*s'",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __entry->ino,
+ __entry->bufsize,
+ __entry->count,
+ __entry->parent_ino,
+ __entry->parent_gen,
+ __entry->namelen,
+ __get_str(name))
+);
+
+TRACE_EVENT(xfs_getparent_pointers,
+ TP_PROTO(struct xfs_inode *ip, const struct xfs_getparents *ppi,
+ const struct xfs_attrlist_cursor_kern *cur),
+ TP_ARGS(ip, ppi, cur),
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(xfs_ino_t, ino)
+ __field(unsigned int, flags)
+ __field(unsigned int, bufsize)
+ __field(unsigned int, hashval)
+ __field(unsigned int, blkno)
+ __field(unsigned int, offset)
+ __field(int, initted)
+ ),
+ TP_fast_assign(
+ __entry->dev = ip->i_mount->m_super->s_dev;
+ __entry->ino = ip->i_ino;
+ __entry->flags = ppi->gp_flags;
+ __entry->bufsize = ppi->gp_bufsize;
+ __entry->hashval = cur->hashval;
+ __entry->blkno = cur->blkno;
+ __entry->offset = cur->offset;
+ __entry->initted = cur->initted;
+ ),
+ TP_printk("dev %d:%d ino 0x%llx flags 0x%x bufsize %u cur_init? %d hashval 0x%x blkno %u offset %u",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __entry->ino,
+ __entry->flags,
+ __entry->bufsize,
+ __entry->initted,
+ __entry->hashval,
+ __entry->blkno,
+ __entry->offset)
+);
+
#endif /* _TRACE_XFS_H */
#undef TRACE_INCLUDE_PATH
