From: Allison Henderson <allison.henderson@oracle.com>
To: linux-xfs@vger.kernel.org
Subject: [PATCH v2 01/27] xfsprogs: Move xfs_attr.h to libxfs
Date: Sat, 9 Jun 2018 22:07:26 -0700 [thread overview]
Message-ID: <1528607272-11122-2-git-send-email-allison.henderson@oracle.com> (raw)
In-Reply-To: <1528607272-11122-1-git-send-email-allison.henderson@oracle.com>
This patch moves fs/xfs/xfs_attr.h to fs/xfs/libxfs/xfs_attr.h
since xfs_attr.c is in libxfs. We will need these later in
xfsprogs.
Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
---
libxfs/Makefile | 1 +
libxfs/xfs_attr.h | 157 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 158 insertions(+)
diff --git a/libxfs/Makefile b/libxfs/Makefile
index 0470f5f..75ce980 100644
--- a/libxfs/Makefile
+++ b/libxfs/Makefile
@@ -21,6 +21,7 @@ HFILES = \
xfs_ag_resv.h \
xfs_alloc.h \
xfs_alloc_btree.h \
+ xfs_attr.h \
xfs_attr_leaf.h \
xfs_attr_sf.h \
xfs_bit.h \
diff --git a/libxfs/xfs_attr.h b/libxfs/xfs_attr.h
new file mode 100644
index 0000000..8abf398
--- /dev/null
+++ b/libxfs/xfs_attr.h
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2000,2002-2003,2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef __XFS_ATTR_H__
+#define __XFS_ATTR_H__
+
+struct xfs_inode;
+struct xfs_da_args;
+struct xfs_attr_list_context;
+
+/*
+ * Large attribute lists are structured around Btrees where all the data
+ * elements are in the leaf nodes. Attribute names are hashed into an int,
+ * then that int is used as the index into the Btree. Since the hashval
+ * of an attribute name may not be unique, we may have duplicate keys.
+ * The internal links in the Btree are logical block offsets into the file.
+ *
+ * Small attribute lists use a different format and are packed as tightly
+ * as possible so as to fit into the literal area of the inode.
+ */
+
+/*========================================================================
+ * External interfaces
+ *========================================================================*/
+
+
+#define ATTR_DONTFOLLOW 0x0001 /* -- unused, from IRIX -- */
+#define ATTR_ROOT 0x0002 /* use attrs in root (trusted) namespace */
+#define ATTR_TRUST 0x0004 /* -- unused, from IRIX -- */
+#define ATTR_SECURE 0x0008 /* use attrs in security namespace */
+#define ATTR_CREATE 0x0010 /* pure create: fail if attr already exists */
+#define ATTR_REPLACE 0x0020 /* pure set: fail if attr does not exist */
+
+#define ATTR_INCOMPLETE 0x4000 /* [kernel] return INCOMPLETE attr keys */
+
+#define XFS_ATTR_FLAGS \
+ { ATTR_DONTFOLLOW, "DONTFOLLOW" }, \
+ { ATTR_ROOT, "ROOT" }, \
+ { ATTR_TRUST, "TRUST" }, \
+ { ATTR_SECURE, "SECURE" }, \
+ { ATTR_CREATE, "CREATE" }, \
+ { ATTR_REPLACE, "REPLACE" }, \
+ { ATTR_KERNOTIME, "KERNOTIME" }, \
+ { ATTR_KERNOVAL, "KERNOVAL" }, \
+ { ATTR_INCOMPLETE, "INCOMPLETE" }
+
+/*
+ * The maximum size (into the kernel or returned from the kernel) of an
+ * attribute value or the buffer used for an attr_list() call. Larger
+ * sizes will result in an ERANGE return code.
+ */
+#define ATTR_MAX_VALUELEN (64*1024) /* max length of a value */
+
+/*
+ * Define how lists of attribute names are returned to the user from
+ * the attr_list() call. A large, 32bit aligned, buffer is passed in
+ * along with its size. We put an array of offsets at the top that each
+ * reference an attrlist_ent_t and pack the attrlist_ent_t's at the bottom.
+ */
+typedef struct attrlist {
+ __s32 al_count; /* number of entries in attrlist */
+ __s32 al_more; /* T/F: more attrs (do call again) */
+ __s32 al_offset[1]; /* byte offsets of attrs [var-sized] */
+} attrlist_t;
+
+/*
+ * Show the interesting info about one attribute. This is what the
+ * al_offset[i] entry points to.
+ */
+typedef struct attrlist_ent { /* data from attr_list() */
+ __u32 a_valuelen; /* number bytes in value of attr */
+ char a_name[1]; /* attr name (NULL terminated) */
+} attrlist_ent_t;
+
+/*
+ * Given a pointer to the (char*) buffer containing the attr_list() result,
+ * and an index, return a pointer to the indicated attribute in the buffer.
+ */
+#define ATTR_ENTRY(buffer, index) \
+ ((attrlist_ent_t *) \
+ &((char *)buffer)[ ((attrlist_t *)(buffer))->al_offset[index] ])
+
+/*
+ * Kernel-internal version of the attrlist cursor.
+ */
+typedef struct attrlist_cursor_kern {
+ __u32 hashval; /* hash value of next entry to add */
+ __u32 blkno; /* block containing entry (suggestion) */
+ __u32 offset; /* offset in list of equal-hashvals */
+ __u16 pad1; /* padding to match user-level */
+ __u8 pad2; /* padding to match user-level */
+ __u8 initted; /* T/F: cursor has been initialized */
+} attrlist_cursor_kern_t;
+
+
+/*========================================================================
+ * Structure used to pass context around among the routines.
+ *========================================================================*/
+
+
+/* void; state communicated via *context */
+typedef void (*put_listent_func_t)(struct xfs_attr_list_context *, int,
+ unsigned char *, int, int);
+
+typedef struct xfs_attr_list_context {
+ struct xfs_trans *tp;
+ struct xfs_inode *dp; /* inode */
+ struct attrlist_cursor_kern *cursor; /* position in list */
+ char *alist; /* output buffer */
+ int seen_enough; /* T/F: seen enough of list? */
+ ssize_t count; /* num used entries */
+ int dupcnt; /* count dup hashvals seen */
+ int bufsize; /* total buffer size */
+ int firstu; /* first used byte in buffer */
+ int flags; /* from VOP call */
+ int resynch; /* T/F: resynch with cursor */
+ put_listent_func_t put_listent; /* list output fmt function */
+ int index; /* index into output buffer */
+} xfs_attr_list_context_t;
+
+
+/*========================================================================
+ * Function prototypes for the kernel.
+ *========================================================================*/
+
+/*
+ * Overall external interface routines.
+ */
+int xfs_attr_inactive(struct xfs_inode *dp);
+int xfs_attr_list_int_ilocked(struct xfs_attr_list_context *);
+int xfs_attr_list_int(struct xfs_attr_list_context *);
+int xfs_inode_hasattr(struct xfs_inode *ip);
+int xfs_attr_get_ilocked(struct xfs_inode *ip, struct xfs_da_args *args);
+int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name,
+ unsigned char *value, int *valuelenp, int flags);
+int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
+ unsigned char *value, int valuelen, int flags);
+int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags);
+int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize,
+ int flags, struct attrlist_cursor_kern *cursor);
+
+
+#endif /* __XFS_ATTR_H__ */
--
2.7.4
next prev parent reply other threads:[~2018-06-10 5:10 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-10 5:07 [PATCH v2 00/27] xfsprogs: parent pointers v2 Allison Henderson
2018-06-10 5:07 ` Allison Henderson [this message]
2018-06-10 5:07 ` [PATCH v2 02/27] xfsprogs: Add helper function xfs_attr_try_sf_addname Allison Henderson
2018-06-10 5:07 ` [PATCH v2 03/27] xfsprogs: Add trans toggle to attr routines Allison Henderson
2018-06-10 7:02 ` Amir Goldstein
2018-06-10 16:19 ` Allison Henderson
2018-06-10 5:07 ` [PATCH v2 04/27] xfsprogs: Add attibute set and helper functions Allison Henderson
2018-06-10 5:07 ` [PATCH v2 05/27] xfsprogs: Add attibute remove " Allison Henderson
2018-06-10 5:07 ` [PATCH v2 06/27] xfsprogs: Set up infastructure for deferred attribute operations Allison Henderson
2018-06-10 5:07 ` [PATCH v2 07/27] xfsprogs: Add xfs_attr_set_deferred and xfs_attr_remove_deferred Allison Henderson
2018-06-10 5:07 ` [PATCH v2 08/27] xfsprogs: Remove all strlen calls in all xfs_attr_* functions for attr names Allison Henderson
2018-06-10 5:07 ` [PATCH v2 09/27] xfsprogs: get directory offset when adding directory name Allison Henderson
2018-06-10 5:07 ` [PATCH v2 10/27] xfsprogs: get directory offset when removing " Allison Henderson
2018-06-10 5:07 ` [PATCH v2 11/27] xfsprogs: get directory offset when replacing a " Allison Henderson
2018-06-10 5:07 ` [PATCH v2 12/27] xfsprogs: add parent pointer support to attribute code Allison Henderson
2018-06-10 5:07 ` [PATCH v2 13/27] xfsprogs: define parent pointer xattr format Allison Henderson
2018-06-10 5:07 ` [PATCH v2 14/27] xfsprogs: extent transaction reservations for parent attributes Allison Henderson
2018-06-10 5:07 ` [PATCH v2 15/27] xfsprogs: parent pointer attribute creation Allison Henderson
2018-06-10 5:07 ` [PATCH v2 16/27] xfsprogs: Add the parent pointer support to the superblock version 5 Allison Henderson
2018-06-10 5:07 ` [PATCH v2 17/27] xfsprogs: Add helper function xfs_attr_list_context_init Allison Henderson
2018-06-10 5:07 ` [PATCH v2 18/27] xfsprogs: Add parent pointer ioctl Allison Henderson
2018-06-10 5:07 ` [PATCH v2 19/27] xfsprogs: Add delayed attributes error tag Allison Henderson
2018-06-11 17:28 ` Darrick J. Wong
2018-06-11 19:59 ` Allison Henderson
2018-06-10 5:07 ` [PATCH v2 20/27] xfsprogs: Add parent pointer flag to cmd Allison Henderson
2018-06-11 17:43 ` Darrick J. Wong
2018-06-11 20:00 ` Allison Henderson
2018-06-10 5:07 ` [PATCH v2 21/27] xfsprogs: Remove single byte array from struct parent Allison Henderson
2018-06-10 11:21 ` Amir Goldstein
2018-06-10 15:25 ` Allison Henderson
2018-06-10 5:07 ` [PATCH v2 22/27] xfsprogs: Add log item printing for ATTRI and ATTRD Allison Henderson
2018-06-10 5:07 ` [PATCH v2 23/27] xfsprogs: Do not use namechecks on parent pointers Allison Henderson
2018-06-11 18:00 ` Darrick J. Wong
2018-06-11 20:00 ` Allison Henderson
2018-06-11 20:23 ` Darrick J. Wong
2018-06-11 20:38 ` Allison Henderson
2018-06-10 5:07 ` [PATCH v2 24/27] xfsprogs: Add parent pointers to recreated inodes Allison Henderson
2018-06-10 11:27 ` Amir Goldstein
2018-06-10 17:19 ` Allison Henderson
2018-06-11 17:31 ` Darrick J. Wong
2018-06-11 18:06 ` Darrick J. Wong
2018-06-11 20:00 ` Allison Henderson
2018-06-10 5:07 ` [PATCH v2 25/27] xfsprogs: Add parent pointers during protofile creation Allison Henderson
2018-06-10 11:32 ` Amir Goldstein
2018-06-11 18:15 ` Darrick J. Wong
2018-06-11 19:58 ` Allison Henderson
2018-06-10 5:07 ` [PATCH v2 26/27] xfsprogs: implement the upper half of parent pointers Allison Henderson
2018-06-10 12:06 ` Amir Goldstein
2018-06-10 5:07 ` [PATCH v2 27/27] xfsprogs: Clean up old parent pointer definitions Allison Henderson
2018-06-11 18:20 ` Darrick J. Wong
2018-06-11 20:06 ` Allison Henderson
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