Merge of master-melb:xfs-cmds:23838a by kenmcd.
#
-# Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. All Rights Reserved.
+# Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of version 2 of the GNU General Public License as
dbread.h debug.h dir.h dir2.h dir2sf.h dirshort.h dquot.h echo.h \
faddr.h field.h flist.h fprint.h frag.h freesp.h hash.h help.h \
init.h inobt.h inode.h input.h io.h malloc.h output.h \
- print.h quit.h sb.h sig.h strvec.h text.h type.h write.h
+ print.h quit.h sb.h sig.h strvec.h text.h type.h write.h \
+ attrset.h
CFILES = $(HFILES:.h=.c)
LSRCFILES = xfs_admin.sh xfs_check.sh xfs_ncheck.sh
LLDLIBS = $(LIBXFS) $(LIBXLOG) $(LIBUUID)
--- /dev/null
+/*
+ * Copyright (c) 2005 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 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.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like. Any license provided herein, whether implied or
+ * otherwise, applies only to this software file. Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
+ * Mountain View, CA 94043, or:
+ *
+ * http://www.sgi.com
+ *
+ * For further information regarding this notice, see:
+ *
+ * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ */
+
+#include <xfs/libxfs.h>
+#include "command.h"
+#include "attrset.h"
+#include "io.h"
+#include "output.h"
+#include "type.h"
+#include "init.h"
+#include "inode.h"
+#include "malloc.h"
+
+static int attr_set_f(int argc, char **argv);
+static int attr_remove_f(int argc, char **argv);
+static void attrset_help(void);
+
+static const cmdinfo_t attr_set_cmd =
+ { "attr_set", "aset", attr_set_f, 1, -1, 0,
+ "[-r|-s|-p|-u] [-R|-C] [-v n] name",
+ "set the named attribute on the current inode", attrset_help };
+static const cmdinfo_t attr_remove_cmd =
+ { "attr_remove", "aremove", attr_remove_f, 1, -1, 0,
+ "[-r|-s|-p|-u] name",
+ "remove the named attribute from the current inode", attrset_help };
+
+static void
+attrset_help(void)
+{
+ dbprintf(
+"\n"
+" The 'attr_set' and 'attr_remove' commands provide interfaces for debugging\n"
+" the extended attribute allocation and removal code.\n"
+" Both commands require an attribute name to be specified, and the attr_set\n"
+" command allows an optional value length (-v) to be provided as well.\n"
+" There are 4 namespace flags:\n"
+" -r -- 'root'\n"
+" -u -- 'user' (default)\n"
+" -s -- 'secure'\n"
+"\n"
+" For attr_set, these options further define the type of set:\n"
+" -C -- 'create' - create attribute, fail if it already exists\n"
+" -R -- 'replace' - replace attribute, fail if it does not exist\n"
+"\n");
+}
+
+void
+attrset_init(void)
+{
+ if (!expert_mode)
+ return;
+
+ add_command(&attr_set_cmd);
+ add_command(&attr_remove_cmd);
+}
+
+static int
+attr_set_f(
+ int argc,
+ char **argv)
+{
+ xfs_inode_t *ip = NULL;
+ char *name, *value, *sp;
+ int c, namelen, valuelen = 0, flags = 0;
+
+ if (cur_typ == NULL) {
+ dbprintf("no current type\n");
+ return 0;
+ }
+ if (cur_typ->typnm != TYP_INODE) {
+ dbprintf("current type is not inode\n");
+ return 0;
+ }
+
+ while ((c = getopt(argc, argv, "rusCRv:")) != EOF) {
+ switch (c) {
+ /* namespaces */
+ case 'r':
+ flags |= LIBXFS_ATTR_ROOT;
+ flags &= ~LIBXFS_ATTR_SECURE;
+ break;
+ case 'u':
+ flags &= ~(LIBXFS_ATTR_ROOT | LIBXFS_ATTR_SECURE);
+ break;
+ case 's':
+ flags |= LIBXFS_ATTR_SECURE;
+ flags &= ~LIBXFS_ATTR_ROOT;
+ break;
+
+ /* modifiers */
+ case 'C':
+ flags |= LIBXFS_ATTR_CREATE;
+ break;
+ case 'R':
+ flags |= LIBXFS_ATTR_REPLACE;
+ break;
+
+ /* value length */
+ case 'v':
+ valuelen = (int)strtol(optarg, &sp, 0);
+ if (*sp != '\0' || valuelen < 0 || valuelen > 64*1024) {
+ dbprintf("bad attr_set valuelen %s\n", optarg);
+ return 0;
+ }
+ break;
+
+ default:
+ dbprintf("bad option for attr_set command\n");
+ return 0;
+ }
+ }
+
+ if (optind != argc - 1) {
+ dbprintf("too few options for attr_set (no name given)\n");
+ return 0;
+ }
+
+ name = argv[optind];
+ namelen = strlen(name);
+
+ if (valuelen) {
+ value = (char *)memalign(getpagesize(), valuelen);
+ if (!value) {
+ dbprintf("cannot allocate buffer (%d)\n", valuelen);
+ goto out;
+ }
+ memset(value, 0xfeedface, valuelen);
+ } else {
+ value = NULL;
+ }
+
+ if (libxfs_iget(mp, NULL, iocur_top->ino, 0, &ip, 0)) {
+ dbprintf(_("failed to iget inode %llu\n"),
+ (unsigned long long)iocur_top->ino);
+ goto out;
+ }
+
+ if (libxfs_attr_set_int(ip, name, namelen, value, valuelen, flags)) {
+ dbprintf(_("failed to set attr %s on inode %llu\n"),
+ name, (unsigned long long)iocur_top->ino);
+ goto out;
+ }
+
+ /* refresh with updated inode contents */
+ set_cur_inode(iocur_top->ino);
+
+out:
+ if (ip)
+ libxfs_iput(ip, 0);
+ if (value)
+ free(value);
+ return 0;
+}
+
+static int
+attr_remove_f(
+ int argc,
+ char **argv)
+{
+ xfs_inode_t *ip = NULL;
+ char *name;
+ int c, namelen, flags = 0;
+
+ if (cur_typ == NULL) {
+ dbprintf("no current type\n");
+ return 0;
+ }
+ if (cur_typ->typnm != TYP_INODE) {
+ dbprintf("current type is not inode\n");
+ return 0;
+ }
+
+ while ((c = getopt(argc, argv, "rus")) != EOF) {
+ switch (c) {
+ /* namespaces */
+ case 'r':
+ flags |= LIBXFS_ATTR_ROOT;
+ flags &= ~LIBXFS_ATTR_SECURE;
+ break;
+ case 'u':
+ flags &= ~(LIBXFS_ATTR_ROOT | LIBXFS_ATTR_SECURE);
+ break;
+ case 's':
+ flags |= LIBXFS_ATTR_SECURE;
+ flags &= ~LIBXFS_ATTR_ROOT;
+ break;
+
+ default:
+ dbprintf("bad option for attr_remove command\n");
+ return 0;
+ }
+ }
+
+ if (optind != argc - 1) {
+ dbprintf("too few options for attr_remove (no name given)\n");
+ return 0;
+ }
+
+ name = argv[optind];
+ namelen = strlen(name);
+
+ if (libxfs_iget(mp, NULL, iocur_top->ino, 0, &ip, 0)) {
+ dbprintf(_("failed to iget inode %llu\n"),
+ (unsigned long long)iocur_top->ino);
+ goto out;
+ }
+
+ if (libxfs_attr_remove_int(ip, name, namelen, flags)) {
+ dbprintf(_("failed to remove attr %s from inode %llu\n"),
+ name, (unsigned long long)iocur_top->ino);
+ goto out;
+ }
+
+ /* refresh with updated inode contents */
+ set_cur_inode(iocur_top->ino);
+
+out:
+ if (ip)
+ libxfs_iput(ip, 0);
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (c) 2005 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 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.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like. Any license provided herein, whether implied or
+ * otherwise, applies only to this software file. Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
+ * Mountain View, CA 94043, or:
+ *
+ * http://www.sgi.com
+ *
+ * For further information regarding this notice, see:
+ *
+ * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ */
+
+extern void attrset_init(void);
/*
- * Copyright (c) 2000-2001,2004 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
#include <xfs/libxfs.h>
#include "addr.h"
+#include "attrset.h"
#include "block.h"
#include "bmap.h"
#include "check.h"
agf_init();
agfl_init();
agi_init();
+ attrset_init();
block_init();
bmap_init();
check_init();
xfs_ag.h xfs_alloc.h xfs_alloc_btree.h xfs_arch.h xfs_attr_leaf.h \
xfs_attr_sf.h xfs_bit.h xfs_bmap.h xfs_bmap_btree.h xfs_btree.h \
xfs_buf_item.h xfs_da_btree.h xfs_dfrag.h xfs_dinode.h \
- xfs_dir.h xfs_dir2.h xfs_dir2_block.h xfs_dir2_data.h xfs_dir2_leaf.h \
+ xfs_dir2.h xfs_dir2_block.h xfs_dir2_data.h xfs_dir2_leaf.h \
xfs_dir2_node.h xfs_dir2_sf.h xfs_dir_leaf.h xfs_dir_sf.h \
xfs_extfree_item.h xfs_fs.h xfs_ialloc.h xfs_ialloc_btree.h \
xfs_imap.h xfs_inode.h xfs_inode_item.h xfs_inum.h \
/*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
#include <xfs/xfs_ialloc.h>
#include <xfs/xfs_rtalloc.h>
#include <xfs/xfs_btree.h>
-#include <xfs/xfs_dir.h>
#include <xfs/xfs_dir_sf.h>
#include <xfs/xfs_dir_leaf.h>
#include <xfs/xfs_dir2.h>
int m_dalign; /* stripe unit */
int m_swidth; /* stripe width */
int m_sinoalign; /* stripe unit inode alignmnt */
+ int m_attr_magicpct;/* 37% of the blocksize */
int m_dir_magicpct; /* 37% of the dir blocksize */
__uint8_t m_dirversion; /* 1 or 2 */
int m_dirblksize; /* directory block sz--bytes */
xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
} xfs_mount_t;
+#define XFS_DIR_IS_V1(mp) ((mp)->m_dirversion == 1)
#define LIBXFS_MOUNT_ROOTINOS 0x0001
#define LIBXFS_MOUNT_DEBUGGER 0x0002
#define XFS_BUF_PTR(bp) ((bp)->b_addr)
#define xfs_buf_offset(bp, offset) (XFS_BUF_PTR(bp) + (offset))
#define XFS_BUF_ADDR(bp) ((bp)->b_blkno)
+#define XFS_BUF_SIZE(bp) ((bp)->b_bcount)
#define XFS_BUF_COUNT(bp) ((bp)->b_bcount)
#define XFS_BUF_TARGET(bp) ((bp)->b_dev)
#define XFS_BUF_SET_PTR(bp,p,cnt) ((bp)->b_addr = (char *)(p)); \
extern int libxfs_writebuf_int (xfs_buf_t *, int);
extern void libxfs_putbuf (xfs_buf_t *);
+#define LIBXFS_BREAD 0x1
+#define LIBXFS_BWRITE 0x2
+#define LIBXFS_BZERO 0x4
+
+extern void libxfs_iomove (xfs_buf_t *, uint, int, void *, int);
+
/*
* Transaction interface
xfs_dinode_core_t i_d; /* most of ondisk inode */
} xfs_inode_t;
+#define LIBXFS_ATTR_ROOT 0x0002 /* use attrs in root namespace */
+#define LIBXFS_ATTR_SECURE 0x0008 /* use attrs in security namespace */
+#define LIBXFS_ATTR_CREATE 0x0010 /* create, but fail if attr exists */
+#define LIBXFS_ATTR_REPLACE 0x0020 /* set, but fail if attr not exists */
+
typedef struct {
uid_t cr_uid;
gid_t cr_gid;
extern xfs_dahash_t libxfs_da_hashname (uchar_t *, int);
extern int libxfs_attr_leaf_newentsize (xfs_da_args_t *, int, int *);
+extern int libxfs_attr_set_int (xfs_inode_t*, char*, int, char*, int, int);
+extern int libxfs_attr_remove_int (xfs_inode_t *, char *, int, int);
+
extern void libxfs_bmbt_get_all (xfs_bmbt_rec_t *, xfs_bmbt_irec_t *);
#if __BYTE_ORDER != __BIG_ENDIAN
/*
- * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* as possible so as to fit into the literal area of the inode.
*/
+#ifdef __KERNEL__
+
/*========================================================================
* Function prototypes for the kernel.
*========================================================================*/
#define XFS_DIR_SHORTFORM_TO_SINGLE(mp,args) \
((mp)->m_dirops.xd_shortform_to_single(args))
-#define XFS_DIR_IS_V1(mp) ((mp)->m_dirversion == 1)
extern xfs_dirops_t xfsv1_dirops;
+#endif /* __KERNEL__*/
+
+#define XFS_DIR_IS_V1(mp) ((mp)->m_dirversion == 1)
+
#endif /* __XFS_DIR_H__ */
/*
- * Copyright (c) 2000-2001,2004 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
} xfs_dir2_put_args_t;
#define XFS_DIR_IS_V2(mp) ((mp)->m_dirversion == 2)
+
+#ifdef __KERNEL__
extern xfs_dirops_t xfsv2_dirops;
+#endif /* __KERNEL__ */
/*
* Other interfaces used by the rest of the dir v2 code.
xfs_bmap_btree.c xfs_da_btree.c xfs_dir.c xfs_dir_leaf.c \
xfs_dir2.c xfs_dir2_leaf.c xfs_attr_leaf.c xfs_dir2_block.c \
xfs_dir2_node.c xfs_dir2_data.c xfs_dir2_sf.c xfs_bmap.c \
- xfs_mount.c xfs_trans.c
+ xfs_mount.c xfs_trans.c xfs_attr.c
CFILES += $(PKG_PLATFORM).c
PCFILES = darwin.c freebsd.c irix.c linux.c
/*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
else
libxfs_dir_mount(mp);
+ /* Initialize cached values for the attribute manager */
+ mp->m_attr_magicpct = (mp->m_sb.sb_blocksize * 37) / 100;
+
/* Initialize the precomputed transaction reservations values */
libxfs_trans_init(mp);
/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
return error;
}
+void
+libxfs_iomove(xfs_buf_t *buf, uint boff, int len, void *data, int flags)
+{
+ if (boff + len > buf->b_bcount)
+ abort();
+
+ switch (flags) {
+ case LIBXFS_BZERO:
+ memset(buf->b_addr + boff, 0, len);
+ break;
+ case LIBXFS_BREAD:
+ memcpy(data, buf->b_addr + boff, len);
+ break;
+ case LIBXFS_BWRITE:
+ memcpy(buf->b_addr + boff, data, len);
+ break;
+ }
+}
+
void
libxfs_putbuf(xfs_buf_t *buf)
{
/*
- * Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
return error;
xfs_bmap_del_free(flist, NULL, free);
}
+ *committed = 0;
return 0;
}
/*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
#define xfs_da_log2_roundup libxfs_da_log2_roundup
#define xfs_highbit32 libxfs_highbit32
#define xfs_highbit64 libxfs_highbit64
-#define xfs_attr_leaf_newentsize libxfs_attr_leaf_newentsize
#define xfs_alloc_compute_maxlevels libxfs_alloc_compute_maxlevels
#define xfs_bmap_compute_maxlevels libxfs_bmap_compute_maxlevels
#define xfs_ialloc_compute_maxlevels libxfs_ialloc_compute_maxlevels
#define xfs_dir2_removename libxfs_dir2_removename
#define xfs_dir_bogus_removename libxfs_dir_bogus_removename
#define xfs_dir2_bogus_removename libxfs_dir2_bogus_removename
+#define xfs_dir_shortform_to_leaf libxfs_dir_shortform_to_leaf
+#define xfs_dir2_sf_to_block libxfs_dir2_sf_to_block
+#define XFS_DIR_SHORTFORM_TO_SINGLE(mp, daargs) XFS_DIR_IS_V2(mp) ? \
+ libxfs_dir2_sf_to_block(daargs) : \
+ libxfs_dir_shortform_to_leaf(daargs);
#define xfs_mount_common libxfs_mount_common
#define xfs_initialize_perag libxfs_initialize_perag
#define xfs_trans_bhold libxfs_trans_bhold
#define xfs_trans_alloc libxfs_trans_alloc
#define xfs_trans_commit libxfs_trans_commit
+#define xfs_trans_cancel libxfs_trans_cancel
#define xfs_trans_mod_sb libxfs_trans_mod_sb
#define xfs_trans_reserve libxfs_trans_reserve
#define xfs_trans_get_buf libxfs_trans_get_buf
#define xfs_dir2_data_freescan libxfs_dir2_data_freescan
#define xfs_dir2_free_log_bests libxfs_dir2_free_log_bests
+#define xfs_attr_leaf_newentsize libxfs_attr_leaf_newentsize
+#define xfs_attr_set_int libxfs_attr_set_int
+#define xfs_attr_remove_int libxfs_attr_remove_int
+
/*
* Infrastructure to support building kernel XFS code in user space
#define XFS_BUF_ISDONE(bp) 0
#define XFS_BUF_GETERROR(bp) 0
#define XFS_BUF_DONE(bp) ((void) 0)
+#define XFS_BUF_STALE(bp) ((void) 0)
+#define XFS_BUF_UNDELAYWRITE(bp) ((void) 0)
#define XFS_BUF_SET_REF(a,b) ((void) 0)
#define XFS_BUF_SET_VTYPE(a,b) ((void) 0)
#define XFS_BUF_SET_VTYPE_REF(a,b,c) ((void) 0)
#define XFS_BUF_SET_BDSTRAT_FUNC(a,b) ((void) 0)
+#define xfs_incore(bt,blkno,len,lockit) 0
#define xfs_baread(a,b,c) ((void) 0) /* no readahead */
#define xfs_buftrace(x,y) ((void) 0) /* debug only */
#define xfs_buf_item_log_debug(bip,a,b) ((void) 0) /* debug only */
#define xfs_buf_relse(bp) libxfs_putbuf(bp)
#define xfs_read_buf(mp,devp,blkno,len,f,bpp) \
( *(bpp) = libxfs_readbuf( *(dev_t*)devp, (blkno), (len), 1), 0 )
+#define xfs_buf_get_flags(devp,blkno,len,f) \
+ ( libxfs_getbuf( devp, (blkno), (len) ) )
+#define xfs_bwrite(mp,bp) libxfs_writebuf((bp), 0)
+
+#define XFS_B_READ LIBXFS_BREAD
+#define XFS_B_WRITE LIBXFS_BWRITE
+#define xfs_biomove(bp,off,len,data,f) libxfs_iomove(bp,off,len,data,f)
+#define xfs_biozero(bp,off,len) libxfs_iomove(bp,off,len,0,LIBXFS_BZERO)
/* transaction management */
#define xfs_trans_set_sync(tp) ((void) 0)
#define xfs_alloc_mark_busy(tp,ag,b,len) ((void) 0)
#define xfs_rotorstep 1
+#define xfs_ilock(ip, mode) ((void)0)
+#define xfs_iunlock(ip, mode) ((void)0)
+
/* anything else */
#if !defined(__sgi__)
typedef __uint32_t uint_t;
#undef MASK
#define NBPP getpagesize()
#define STATIC
-#define ATTR_ROOT 0x0002 /* use attrs in root namespace */
-#define ATTR_SECURE 0x0008 /* use attrs in security namespace */
+#define VN_HOLD(vp)
+#define ATTR_ROOT LIBXFS_ATTR_ROOT
+#define ATTR_SECURE LIBXFS_ATTR_SECURE
+#define ATTR_CREATE LIBXFS_ATTR_CREATE
+#define ATTR_REPLACE LIBXFS_ATTR_REPLACE
+#define ATTR_KERNOTIME 0
#define ktrace_t void
#define m_ddev_targp m_dev
#define unlikely(x) (x)
#define __return_address __builtin_return_address(0)
#define xfs_btree_reada_bufl(m,fsb,c) ((void) 0)
#define xfs_btree_reada_bufs(m,fsb,c,x) ((void) 0)
+#define XFS_SB_LOCK(mp) 0
+#define XFS_SB_UNLOCK(mp,s) ((void) 0)
#undef XFS_DIR_SHORTFORM_VALIDATE_ONDISK
#define XFS_DIR_SHORTFORM_VALIDATE_ONDISK(mp,dip) 0
-#define XFS_TRANS_MOD_DQUOT_BYINO(mp,tp,ip,field,delta)
+#define XFS_QM_DQATTACH(mp,ip,flags) 0
+#define XFS_TRANS_MOD_DQUOT_BYINO(mp,tp,ip,field,delta) do { } while (0)
#define XFS_TRANS_RESERVE_BLKQUOTA(mp,tp,ip,nblks) 0
-#define XFS_TRANS_UNRESERVE_BLKQUOTA(mp,tp,ip,nblks)
-#define XFS_TRANS_RESERVE_QUOTA_NBLKS(mp,tp,ip,nblks,ninos,fl)
+#define XFS_TRANS_UNRESERVE_BLKQUOTA(mp,tp,ip,nblks) 0
+#define XFS_TRANS_RESERVE_QUOTA_NBLKS(mp,tp,ip,nblks,ninos,fl) 0
+#define XFS_TRANS_UNRESERVE_QUOTA_NBLKS(mp,tp,ip,nblks,ninos,fl) 0
/* These are lifted from the kernel */
#define get_unaligned(ptr) \
uint xfs_iroundup (uint);
/* xfs_bmap.c */
-xfs_bmbt_rec_t *xfs_bmap_search_extents (xfs_inode_t *ip,
+int xfs_bmap_local_to_extents (xfs_trans_t *, xfs_inode_t *,
+ xfs_fsblock_t *, xfs_extlen_t, int *, int);
+xfs_bmbt_rec_t *xfs_bmap_search_extents (xfs_inode_t *,
xfs_fileoff_t, int, int *, xfs_extnum_t *,
xfs_bmbt_irec_t *, xfs_bmbt_irec_t *);
int xfs_bmap_read_extents (xfs_trans_t *, xfs_inode_t *, int);
+int xfs_bmap_add_attrfork (xfs_inode_t *, int);
void xfs_bmap_add_free (xfs_fsblock_t, xfs_filblks_t, xfs_bmap_free_t *,
xfs_mount_t *);
int xfs_bmap_first_unused (xfs_trans_t *, xfs_inode_t *, xfs_extlen_t,
xfs_bmap_free_t *, xfs_btree_cur_t **, int, int *, int);
void xfs_bmap_delete_exlist (xfs_inode_t *, xfs_extnum_t, xfs_extnum_t, int);
xfs_filblks_t xfs_bmap_worst_indlen (xfs_inode_t *, xfs_filblks_t);
+void xfs_bmap_cancel (xfs_bmap_free_t *);
int xfs_bmap_isaeof (xfs_inode_t *, xfs_fileoff_t, int, char *);
void xfs_bmap_insert_exlist (xfs_inode_t *, xfs_extnum_t, xfs_extnum_t,
xfs_bmbt_irec_t *, int);
void xfs_bmbt_log_recs (struct xfs_btree_cur *, struct xfs_buf *, int, int);
int xfs_bmbt_lookup_eq (struct xfs_btree_cur *, xfs_fileoff_t, xfs_fsblock_t,
xfs_filblks_t, int *);
+int xfs_bmbt_lookup_ge (struct xfs_btree_cur *, xfs_fileoff_t, xfs_fsblock_t,
+ xfs_filblks_t, int *);
xfs_fsblock_t xfs_bmbt_get_startblock (xfs_bmbt_rec_t *);
xfs_filblks_t xfs_bmbt_get_blockcount (xfs_bmbt_rec_t *);
xfs_fileoff_t xfs_bmbt_get_startoff (xfs_bmbt_rec_t *);
xfs_da_state_t *xfs_da_state_alloc (void);
void xfs_da_state_free (xfs_da_state_t *);
void xfs_da_state_kill_altpath (xfs_da_state_t *);
+xfs_daddr_t xfs_da_blkno(xfs_dabuf_t *);
/* xfs_dir.c */
int xfs_dir_node_addname (xfs_da_args_t *);
xfs_da_state_blk_t *, int *, int *);
void xfs_dir_leaf_moveents (xfs_dir_leafblock_t *, int,
xfs_dir_leafblock_t *, int, int, xfs_mount_t *);
+int xfs_dir_shortform_to_leaf (xfs_da_args_t *);
/* xfs_dir2_leaf.c */
void xfs_dir2_leaf_check (xfs_inode_t *, xfs_dabuf_t *);
int xfs_dir2_leafn_remove (xfs_da_args_t *, xfs_dabuf_t *, int,
xfs_da_state_blk_t *, int *);
int xfs_dir2_node_addname_int (xfs_da_args_t *, xfs_da_state_blk_t *);
+int xfs_dir2_sf_to_block (xfs_da_args_t *);
/* xfs_dir2_sf.c */
void xfs_dir2_sf_check (xfs_da_args_t *);
--- /dev/null
+/*
+ * Copyright (c) 2005 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 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.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like. Any license provided herein, whether implied or
+ * otherwise, applies only to this software file. Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
+ * Mountain View, CA 94043, or:
+ *
+ * http://www.sgi.com
+ *
+ * For further information regarding this notice, see:
+ *
+ * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ */
+
+#include <xfs.h>
+
+/*
+ * xfs_attr.c
+ *
+ * Provide the external interfaces to manage attribute lists.
+ */
+
+/*========================================================================
+ * Function prototypes for the kernel.
+ *========================================================================*/
+
+/*
+ * Internal routines when attribute list fits inside the inode.
+ */
+STATIC int xfs_attr_shortform_addname(xfs_da_args_t *args);
+
+/*
+ * Internal routines when attribute list is one block.
+ */
+STATIC int xfs_attr_leaf_get(xfs_da_args_t *args);
+STATIC int xfs_attr_leaf_addname(xfs_da_args_t *args);
+STATIC int xfs_attr_leaf_removename(xfs_da_args_t *args);
+STATIC int xfs_attr_leaf_list(xfs_attr_list_context_t *context);
+
+/*
+ * Internal routines when attribute list is more than one block.
+ */
+STATIC int xfs_attr_node_get(xfs_da_args_t *args);
+STATIC int xfs_attr_node_addname(xfs_da_args_t *args);
+STATIC int xfs_attr_node_removename(xfs_da_args_t *args);
+STATIC int xfs_attr_node_list(xfs_attr_list_context_t *context);
+STATIC int xfs_attr_fillstate(xfs_da_state_t *state);
+STATIC int xfs_attr_refillstate(xfs_da_state_t *state);
+
+/*
+ * Routines to manipulate out-of-line attribute values.
+ */
+STATIC int xfs_attr_rmtval_get(xfs_da_args_t *args);
+STATIC int xfs_attr_rmtval_set(xfs_da_args_t *args);
+STATIC int xfs_attr_rmtval_remove(xfs_da_args_t *args);
+
+#define ATTR_RMTVALUE_MAPSIZE 1 /* # of map entries at once */
+
+/*========================================================================
+ * Overall external interface routines.
+ *========================================================================*/
+
+int /* error */
+xfs_attr_set_int(
+ xfs_inode_t *dp,
+ char *name,
+ int namelen,
+ char *value,
+ int valuelen,
+ int flags)
+{
+ xfs_da_args_t args;
+ xfs_fsblock_t firstblock;
+ xfs_bmap_free_t flist;
+ int error, err2, committed;
+ int local, size;
+ uint nblks;
+ xfs_mount_t *mp = dp->i_mount;
+ int rsvd = (flags & ATTR_ROOT) != 0;
+
+ /*
+ * If the inode doesn't have an attribute fork, add one.
+ * (inode must not be locked when we call this routine)
+ */
+ if (XFS_IFORK_Q(dp) == 0) {
+ error = xfs_bmap_add_attrfork(dp, rsvd);
+ if (error)
+ return(error);
+ }
+
+ /*
+ * Fill in the arg structure for this request.
+ */
+ memset((char *)&args, 0, sizeof(args));
+ args.name = name;
+ args.namelen = namelen;
+ args.value = value;
+ args.valuelen = valuelen;
+ args.flags = flags;
+ args.hashval = xfs_da_hashname(args.name, args.namelen);
+ args.dp = dp;
+ args.firstblock = &firstblock;
+ args.flist = &flist;
+ args.whichfork = XFS_ATTR_FORK;
+ args.oknoent = 1;
+
+ /* Determine space new attribute will use, and if it will be inline
+ * or out of line.
+ */
+ size = xfs_attr_leaf_newentsize(&args, mp->m_sb.sb_blocksize, &local);
+
+ nblks = XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK);
+ if (local) {
+ if (size > (mp->m_sb.sb_blocksize >> 1)) {
+ /* Double split possible */
+ nblks <<= 1;
+ }
+ } else {
+ uint dblocks = XFS_B_TO_FSB(mp, valuelen);
+ /* Out of line attribute, cannot double split, but make
+ * room for the attribute value itself.
+ */
+ nblks += dblocks;
+ nblks += XFS_NEXTENTADD_SPACE_RES(mp, dblocks, XFS_ATTR_FORK);
+ }
+
+ /* Size is now blocks for attribute data */
+ args.total = nblks;
+
+ /*
+ * Start our first transaction of the day.
+ *
+ * All future transactions during this code must be "chained" off
+ * this one via the trans_dup() call. All transactions will contain
+ * the inode, and the inode will always be marked with trans_ihold().
+ * Since the inode will be locked in all transactions, we must log
+ * the inode in every transaction to let it float upward through
+ * the log.
+ */
+ args.trans = xfs_trans_alloc(mp, XFS_TRANS_ATTR_SET);
+
+ /*
+ * Root fork attributes can use reserved data blocks for this
+ * operation if necessary
+ */
+
+ if (rsvd)
+ args.trans->t_flags |= XFS_TRANS_RESERVE;
+
+ if ((error = xfs_trans_reserve(args.trans, (uint) nblks,
+ XFS_ATTRSET_LOG_RES(mp, nblks),
+ 0, XFS_TRANS_PERM_LOG_RES,
+ XFS_ATTRSET_LOG_COUNT))) {
+ xfs_trans_cancel(args.trans, 0);
+ return(error);
+ }
+ xfs_ilock(dp, XFS_ILOCK_EXCL);
+
+ error = XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, args.trans, dp, nblks, 0,
+ rsvd ? XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_FORCE_RES :
+ XFS_QMOPT_RES_REGBLKS);
+ if (error) {
+ xfs_iunlock(dp, XFS_ILOCK_EXCL);
+ xfs_trans_cancel(args.trans, XFS_TRANS_RELEASE_LOG_RES);
+ return (error);
+ }
+
+ xfs_trans_ijoin(args.trans, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(args.trans, dp);
+
+ /*
+ * If the attribute list is non-existant or a shortform list,
+ * upgrade it to a single-leaf-block attribute list.
+ */
+ if ((dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) ||
+ ((dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS) &&
+ (dp->i_d.di_anextents == 0))) {
+
+ /*
+ * Build initial attribute list (if required).
+ */
+ if (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS)
+ (void)xfs_attr_shortform_create(&args);
+
+ /*
+ * Try to add the attr to the attribute list in
+ * the inode.
+ */
+ error = xfs_attr_shortform_addname(&args);
+ if (error != ENOSPC) {
+ /*
+ * Commit the shortform mods, and we're done.
+ * NOTE: this is also the error path (EEXIST, etc).
+ */
+ ASSERT(args.trans != NULL);
+
+ /*
+ * If this is a synchronous mount, make sure that
+ * the transaction goes to disk before returning
+ * to the user.
+ */
+ if (mp->m_flags & XFS_MOUNT_WSYNC) {
+ xfs_trans_set_sync(args.trans);
+ }
+ err2 = xfs_trans_commit(args.trans,
+ XFS_TRANS_RELEASE_LOG_RES,
+ NULL);
+ xfs_iunlock(dp, XFS_ILOCK_EXCL);
+
+ /*
+ * Hit the inode change time.
+ */
+ if (!error && (flags & ATTR_KERNOTIME) == 0) {
+ xfs_ichgtime(dp, XFS_ICHGTIME_CHG);
+ }
+ return(error == 0 ? err2 : error);
+ }
+
+ /*
+ * It won't fit in the shortform, transform to a leaf block.
+ * GROT: another possible req'mt for a double-split btree op.
+ */
+ XFS_BMAP_INIT(args.flist, args.firstblock);
+ error = xfs_attr_shortform_to_leaf(&args);
+ if (!error) {
+ error = xfs_bmap_finish(&args.trans, args.flist,
+ *args.firstblock, &committed);
+ }
+ if (error) {
+ ASSERT(committed);
+ args.trans = NULL;
+ xfs_bmap_cancel(&flist);
+ goto out;
+ }
+
+ /*
+ * bmap_finish() may have committed the last trans and started
+ * a new one. We need the inode to be in all transactions.
+ */
+ if (committed) {
+ xfs_trans_ijoin(args.trans, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(args.trans, dp);
+ }
+
+ /*
+ * Commit the leaf transformation. We'll need another (linked)
+ * transaction to add the new attribute to the leaf.
+ */
+ if ((error = xfs_attr_rolltrans(&args.trans, dp)))
+ goto out;
+
+ }
+
+ if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
+ error = xfs_attr_leaf_addname(&args);
+ } else {
+ error = xfs_attr_node_addname(&args);
+ }
+ if (error) {
+ goto out;
+ }
+
+ /*
+ * If this is a synchronous mount, make sure that the
+ * transaction goes to disk before returning to the user.
+ */
+ if (mp->m_flags & XFS_MOUNT_WSYNC) {
+ xfs_trans_set_sync(args.trans);
+ }
+
+ /*
+ * Commit the last in the sequence of transactions.
+ */
+ xfs_trans_log_inode(args.trans, dp, XFS_ILOG_CORE);
+ error = xfs_trans_commit(args.trans, XFS_TRANS_RELEASE_LOG_RES,
+ NULL);
+ xfs_iunlock(dp, XFS_ILOCK_EXCL);
+
+ /*
+ * Hit the inode change time.
+ */
+ if (!error && (flags & ATTR_KERNOTIME) == 0) {
+ xfs_ichgtime(dp, XFS_ICHGTIME_CHG);
+ }
+
+ return(error);
+
+out:
+ if (args.trans)
+ xfs_trans_cancel(args.trans,
+ XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT);
+ xfs_iunlock(dp, XFS_ILOCK_EXCL);
+ return(error);
+}
+
+int /* error */
+xfs_attr_remove_int(
+ xfs_inode_t *dp,
+ char *name,
+ int namelen,
+ int flags)
+{
+ xfs_da_args_t args;
+ xfs_fsblock_t firstblock;
+ xfs_bmap_free_t flist;
+ xfs_mount_t *mp = dp->i_mount;
+ int error;
+
+ /*
+ * Fill in the arg structure for this request.
+ */
+ memset((char *)&args, 0, sizeof(args));
+ args.name = name;
+ args.namelen = namelen;
+ args.flags = flags;
+ args.hashval = xfs_da_hashname(args.name, args.namelen);
+ args.dp = dp;
+ args.firstblock = &firstblock;
+ args.flist = &flist;
+ args.total = 0;
+ args.whichfork = XFS_ATTR_FORK;
+
+ /*
+ * Attach the dquots to the inode.
+ */
+ if ((error = XFS_QM_DQATTACH(mp, dp, 0)))
+ return (error);
+
+ /*
+ * Start our first transaction of the day.
+ *
+ * All future transactions during this code must be "chained" off
+ * this one via the trans_dup() call. All transactions will contain
+ * the inode, and the inode will always be marked with trans_ihold().
+ * Since the inode will be locked in all transactions, we must log
+ * the inode in every transaction to let it float upward through
+ * the log.
+ */
+ args.trans = xfs_trans_alloc(mp, XFS_TRANS_ATTR_RM);
+
+ /*
+ * Root fork attributes can use reserved data blocks for this
+ * operation if necessary
+ */
+
+ if (flags & ATTR_ROOT)
+ args.trans->t_flags |= XFS_TRANS_RESERVE;
+
+ if ((error = xfs_trans_reserve(args.trans,
+ XFS_ATTRRM_SPACE_RES(mp),
+ XFS_ATTRRM_LOG_RES(mp),
+ 0, XFS_TRANS_PERM_LOG_RES,
+ XFS_ATTRRM_LOG_COUNT))) {
+ xfs_trans_cancel(args.trans, 0);
+ return(error);
+
+ }
+
+ xfs_ilock(dp, XFS_ILOCK_EXCL);
+ /*
+ * No need to make quota reservations here. We expect to release some
+ * blocks not allocate in the common case.
+ */
+ xfs_trans_ijoin(args.trans, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(args.trans, dp);
+
+ /*
+ * Decide on what work routines to call based on the inode size.
+ */
+ if (XFS_IFORK_Q(dp) == 0 ||
+ (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS &&
+ dp->i_d.di_anextents == 0)) {
+ error = XFS_ERROR(ENOATTR);
+ goto out;
+ }
+ if (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) {
+ ASSERT(dp->i_afp->if_flags & XFS_IFINLINE);
+ error = xfs_attr_shortform_remove(&args);
+ if (error) {
+ goto out;
+ }
+ } else if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
+ error = xfs_attr_leaf_removename(&args);
+ } else {
+ error = xfs_attr_node_removename(&args);
+ }
+ if (error) {
+ goto out;
+ }
+
+ /*
+ * If this is a synchronous mount, make sure that the
+ * transaction goes to disk before returning to the user.
+ */
+ if (mp->m_flags & XFS_MOUNT_WSYNC) {
+ xfs_trans_set_sync(args.trans);
+ }
+
+ /*
+ * Commit the last in the sequence of transactions.
+ */
+ xfs_trans_log_inode(args.trans, dp, XFS_ILOG_CORE);
+ error = xfs_trans_commit(args.trans, XFS_TRANS_RELEASE_LOG_RES,
+ NULL);
+ xfs_iunlock(dp, XFS_ILOCK_EXCL);
+
+ /*
+ * Hit the inode change time.
+ */
+ if (!error && (flags & ATTR_KERNOTIME) == 0) {
+ xfs_ichgtime(dp, XFS_ICHGTIME_CHG);
+ }
+
+ return(error);
+
+out:
+ if (args.trans)
+ xfs_trans_cancel(args.trans,
+ XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT);
+ xfs_iunlock(dp, XFS_ILOCK_EXCL);
+ return(error);
+}
+
+
+/*========================================================================
+ * External routines when attribute list is inside the inode
+ *========================================================================*/
+
+/*
+ * Add a name to the shortform attribute list structure
+ * This is the external routine.
+ */
+STATIC int
+xfs_attr_shortform_addname(xfs_da_args_t *args)
+{
+ int newsize, retval;
+
+ retval = xfs_attr_shortform_lookup(args);
+ if ((args->flags & ATTR_REPLACE) && (retval == ENOATTR)) {
+ return(retval);
+ } else if (retval == EEXIST) {
+ if (args->flags & ATTR_CREATE)
+ return(retval);
+ retval = xfs_attr_shortform_remove(args);
+ ASSERT(retval == 0);
+ }
+
+ newsize = XFS_ATTR_SF_TOTSIZE(args->dp);
+ newsize += XFS_ATTR_SF_ENTSIZE_BYNAME(args->namelen, args->valuelen);
+ if ((newsize <= XFS_IFORK_ASIZE(args->dp)) &&
+ (args->namelen < XFS_ATTR_SF_ENTSIZE_MAX) &&
+ (args->valuelen < XFS_ATTR_SF_ENTSIZE_MAX)) {
+ retval = xfs_attr_shortform_add(args);
+ ASSERT(retval == 0);
+ } else {
+ return(XFS_ERROR(ENOSPC));
+ }
+ return(0);
+}
+
+
+/*========================================================================
+ * External routines when attribute list is one block
+ *========================================================================*/
+
+/*
+ * Add a name to the leaf attribute list structure
+ *
+ * This leaf block cannot have a "remote" value, we only call this routine
+ * if bmap_one_block() says there is only one block (ie: no remote blks).
+ */
+int
+xfs_attr_leaf_addname(xfs_da_args_t *args)
+{
+ xfs_inode_t *dp;
+ xfs_dabuf_t *bp;
+ int retval, error, committed;
+
+ /*
+ * Read the (only) block in the attribute list in.
+ */
+ dp = args->dp;
+ args->blkno = 0;
+ error = xfs_da_read_buf(args->trans, args->dp, args->blkno, -1, &bp,
+ XFS_ATTR_FORK);
+ if (error)
+ return(error);
+ ASSERT(bp != NULL);
+
+ /*
+ * Look up the given attribute in the leaf block. Figure out if
+ * the given flags produce an error or call for an atomic rename.
+ */
+ retval = xfs_attr_leaf_lookup_int(bp, args);
+ if ((args->flags & ATTR_REPLACE) && (retval == ENOATTR)) {
+ xfs_da_brelse(args->trans, bp);
+ return(retval);
+ } else if (retval == EEXIST) {
+ if (args->flags & ATTR_CREATE) { /* pure create op */
+ xfs_da_brelse(args->trans, bp);
+ return(retval);
+ }
+ args->rename = 1; /* an atomic rename */
+ args->blkno2 = args->blkno; /* set 2nd entry info*/
+ args->index2 = args->index;
+ args->rmtblkno2 = args->rmtblkno;
+ args->rmtblkcnt2 = args->rmtblkcnt;
+ }
+
+ /*
+ * Add the attribute to the leaf block, transitioning to a Btree
+ * if required.
+ */
+ retval = xfs_attr_leaf_add(bp, args);
+ xfs_da_buf_done(bp);
+ if (retval == ENOSPC) {
+ /*
+ * Promote the attribute list to the Btree format, then
+ * Commit that transaction so that the node_addname() call
+ * can manage its own transactions.
+ */
+ XFS_BMAP_INIT(args->flist, args->firstblock);
+ error = xfs_attr_leaf_to_node(args);
+ if (!error) {
+ error = xfs_bmap_finish(&args->trans, args->flist,
+ *args->firstblock, &committed);
+ }
+ if (error) {
+ ASSERT(committed);
+ args->trans = NULL;
+ xfs_bmap_cancel(args->flist);
+ return(error);
+ }
+
+ /*
+ * bmap_finish() may have committed the last trans and started
+ * a new one. We need the inode to be in all transactions.
+ */
+ if (committed) {
+ xfs_trans_ijoin(args->trans, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(args->trans, dp);
+ }
+
+ /*
+ * Commit the current trans (including the inode) and start
+ * a new one.
+ */
+ if ((error = xfs_attr_rolltrans(&args->trans, dp)))
+ return (error);
+
+ /*
+ * Fob the whole rest of the problem off on the Btree code.
+ */
+ error = xfs_attr_node_addname(args);
+ return(error);
+ }
+
+ /*
+ * Commit the transaction that added the attr name so that
+ * later routines can manage their own transactions.
+ */
+ if ((error = xfs_attr_rolltrans(&args->trans, dp)))
+ return (error);
+
+ /*
+ * If there was an out-of-line value, allocate the blocks we
+ * identified for its storage and copy the value. This is done
+ * after we create the attribute so that we don't overflow the
+ * maximum size of a transaction and/or hit a deadlock.
+ */
+ if (args->rmtblkno > 0) {
+ error = xfs_attr_rmtval_set(args);
+ if (error)
+ return(error);
+ }
+
+ /*
+ * If this is an atomic rename operation, we must "flip" the
+ * incomplete flags on the "new" and "old" attribute/value pairs
+ * so that one disappears and one appears atomically. Then we
+ * must remove the "old" attribute/value pair.
+ */
+ if (args->rename) {
+ /*
+ * In a separate transaction, set the incomplete flag on the
+ * "old" attr and clear the incomplete flag on the "new" attr.
+ */
+ error = xfs_attr_leaf_flipflags(args);
+ if (error)
+ return(error);
+
+ /*
+ * Dismantle the "old" attribute/value pair by removing
+ * a "remote" value (if it exists).
+ */
+ args->index = args->index2;
+ args->blkno = args->blkno2;
+ args->rmtblkno = args->rmtblkno2;
+ args->rmtblkcnt = args->rmtblkcnt2;
+ if (args->rmtblkno) {
+ error = xfs_attr_rmtval_remove(args);
+ if (error)
+ return(error);
+ }
+
+ /*
+ * Read in the block containing the "old" attr, then
+ * remove the "old" attr from that block (neat, huh!)
+ */
+ error = xfs_da_read_buf(args->trans, args->dp, args->blkno, -1,
+ &bp, XFS_ATTR_FORK);
+ if (error)
+ return(error);
+ ASSERT(bp != NULL);
+ (void)xfs_attr_leaf_remove(bp, args);
+
+ /*
+ * If the result is small enough, shrink it all into the inode.
+ */
+ if (xfs_attr_shortform_allfit(bp, dp)) {
+ XFS_BMAP_INIT(args->flist, args->firstblock);
+ error = xfs_attr_leaf_to_shortform(bp, args);
+ /* bp is gone due to xfs_da_shrink_inode */
+ if (!error) {
+ error = xfs_bmap_finish(&args->trans,
+ args->flist,
+ *args->firstblock,
+ &committed);
+ }
+ if (error) {
+ ASSERT(committed);
+ args->trans = NULL;
+ xfs_bmap_cancel(args->flist);
+ return(error);
+ }
+
+ /*
+ * bmap_finish() may have committed the last trans
+ * and started a new one. We need the inode to be
+ * in all transactions.
+ */
+ if (committed) {
+ xfs_trans_ijoin(args->trans, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(args->trans, dp);
+ }
+ } else
+ xfs_da_buf_done(bp);
+
+ /*
+ * Commit the remove and start the next trans in series.
+ */
+ error = xfs_attr_rolltrans(&args->trans, dp);
+
+ } else if (args->rmtblkno > 0) {
+ /*
+ * Added a "remote" value, just clear the incomplete flag.
+ */
+ error = xfs_attr_leaf_clearflag(args);
+ }
+ return(error);
+}
+
+/*
+ * Remove a name from the leaf attribute list structure
+ *
+ * This leaf block cannot have a "remote" value, we only call this routine
+ * if bmap_one_block() says there is only one block (ie: no remote blks).
+ */
+STATIC int
+xfs_attr_leaf_removename(xfs_da_args_t *args)
+{
+ xfs_inode_t *dp;
+ xfs_dabuf_t *bp;
+ int committed;
+ int error;
+
+ /*
+ * Remove the attribute.
+ */
+ dp = args->dp;
+ args->blkno = 0;
+ error = xfs_da_read_buf(args->trans, args->dp, args->blkno, -1, &bp,
+ XFS_ATTR_FORK);
+ if (error) {
+ return(error);
+ }
+
+ ASSERT(bp != NULL);
+ error = xfs_attr_leaf_lookup_int(bp, args);
+ if (error == ENOATTR) {
+ xfs_da_brelse(args->trans, bp);
+ return(error);
+ }
+
+ (void)xfs_attr_leaf_remove(bp, args);
+
+ /*
+ * If the result is small enough, shrink it all into the inode.
+ */
+ if (xfs_attr_shortform_allfit(bp, dp)) {
+ XFS_BMAP_INIT(args->flist, args->firstblock);
+ error = xfs_attr_leaf_to_shortform(bp, args);
+ /* bp is gone due to xfs_da_shrink_inode */
+ if (!error) {
+ error = xfs_bmap_finish(&args->trans, args->flist,
+ *args->firstblock, &committed);
+ }
+ if (error) {
+ ASSERT(committed);
+ args->trans = NULL;
+ xfs_bmap_cancel(args->flist);
+ return(error);
+ }
+
+ /*
+ * bmap_finish() may have committed the last trans and started
+ * a new one. We need the inode to be in all transactions.
+ */
+ if (committed) {
+ xfs_trans_ijoin(args->trans, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(args->trans, dp);
+ }
+ } else
+ xfs_da_buf_done(bp);
+ return(0);
+}
+
+/*========================================================================
+ * External routines when attribute list size > XFS_LBSIZE(mp).
+ *========================================================================*/
+
+/*
+ * Add a name to a Btree-format attribute list.
+ *
+ * This will involve walking down the Btree, and may involve splitting
+ * leaf nodes and even splitting intermediate nodes up to and including
+ * the root node (a special case of an intermediate node).
+ *
+ * "Remote" attribute values confuse the issue and atomic rename operations
+ * add a whole extra layer of confusion on top of that.
+ */
+STATIC int
+xfs_attr_node_addname(xfs_da_args_t *args)
+{
+ xfs_da_state_t *state;
+ xfs_da_state_blk_t *blk;
+ xfs_inode_t *dp;
+ xfs_mount_t *mp;
+ int committed, retval, error;
+
+ /*
+ * Fill in bucket of arguments/results/context to carry around.
+ */
+ dp = args->dp;
+ mp = dp->i_mount;
+restart:
+ state = xfs_da_state_alloc();
+ state->args = args;
+ state->mp = mp;
+ state->blocksize = state->mp->m_sb.sb_blocksize;
+ state->node_ents = state->mp->m_attr_node_ents;
+
+ /*
+ * Search to see if name already exists, and get back a pointer
+ * to where it should go.
+ */
+ error = xfs_da_node_lookup_int(state, &retval);
+ if (error)
+ goto out;
+ blk = &state->path.blk[ state->path.active-1 ];
+ ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC);
+ if ((args->flags & ATTR_REPLACE) && (retval == ENOATTR)) {
+ goto out;
+ } else if (retval == EEXIST) {
+ if (args->flags & ATTR_CREATE)
+ goto out;
+ args->rename = 1; /* atomic rename op */
+ args->blkno2 = args->blkno; /* set 2nd entry info*/
+ args->index2 = args->index;
+ args->rmtblkno2 = args->rmtblkno;
+ args->rmtblkcnt2 = args->rmtblkcnt;
+ args->rmtblkno = 0;
+ args->rmtblkcnt = 0;
+ }
+
+ retval = xfs_attr_leaf_add(blk->bp, state->args);
+ if (retval == ENOSPC) {
+ if (state->path.active == 1) {
+ /*
+ * Its really a single leaf node, but it had
+ * out-of-line values so it looked like it *might*
+ * have been a b-tree.
+ */
+ xfs_da_state_free(state);
+ XFS_BMAP_INIT(args->flist, args->firstblock);
+ error = xfs_attr_leaf_to_node(args);
+ if (!error) {
+ error = xfs_bmap_finish(&args->trans,
+ args->flist,
+ *args->firstblock,
+ &committed);
+ }
+ if (error) {
+ ASSERT(committed);
+ args->trans = NULL;
+ xfs_bmap_cancel(args->flist);
+ goto out;
+ }
+
+ /*
+ * bmap_finish() may have committed the last trans
+ * and started a new one. We need the inode to be
+ * in all transactions.
+ */
+ if (committed) {
+ xfs_trans_ijoin(args->trans, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(args->trans, dp);
+ }
+
+ /*
+ * Commit the node conversion and start the next
+ * trans in the chain.
+ */
+ if ((error = xfs_attr_rolltrans(&args->trans, dp)))
+ goto out;
+
+ goto restart;
+ }
+
+ /*
+ * Split as many Btree elements as required.
+ * This code tracks the new and old attr's location
+ * in the index/blkno/rmtblkno/rmtblkcnt fields and
+ * in the index2/blkno2/rmtblkno2/rmtblkcnt2 fields.
+ */
+ XFS_BMAP_INIT(args->flist, args->firstblock);
+ error = xfs_da_split(state);
+ if (!error) {
+ error = xfs_bmap_finish(&args->trans, args->flist,
+ *args->firstblock, &committed);
+ }
+ if (error) {
+ ASSERT(committed);
+ args->trans = NULL;
+ xfs_bmap_cancel(args->flist);
+ goto out;
+ }
+
+ /*
+ * bmap_finish() may have committed the last trans and started
+ * a new one. We need the inode to be in all transactions.
+ */
+ if (committed) {
+ xfs_trans_ijoin(args->trans, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(args->trans, dp);
+ }
+ } else {
+ /*
+ * Addition succeeded, update Btree hashvals.
+ */
+ xfs_da_fixhashpath(state, &state->path);
+ }
+
+ /*
+ * Kill the state structure, we're done with it and need to
+ * allow the buffers to come back later.
+ */
+ xfs_da_state_free(state);
+ state = NULL;
+
+ /*
+ * Commit the leaf addition or btree split and start the next
+ * trans in the chain.
+ */
+ if ((error = xfs_attr_rolltrans(&args->trans, dp)))
+ goto out;
+
+ /*
+ * If there was an out-of-line value, allocate the blocks we
+ * identified for its storage and copy the value. This is done
+ * after we create the attribute so that we don't overflow the
+ * maximum size of a transaction and/or hit a deadlock.
+ */
+ if (args->rmtblkno > 0) {
+ error = xfs_attr_rmtval_set(args);
+ if (error)
+ return(error);
+ }
+
+ /*
+ * If this is an atomic rename operation, we must "flip" the
+ * incomplete flags on the "new" and "old" attribute/value pairs
+ * so that one disappears and one appears atomically. Then we
+ * must remove the "old" attribute/value pair.
+ */
+ if (args->rename) {
+ /*
+ * In a separate transaction, set the incomplete flag on the
+ * "old" attr and clear the incomplete flag on the "new" attr.
+ */
+ error = xfs_attr_leaf_flipflags(args);
+ if (error)
+ goto out;
+
+ /*
+ * Dismantle the "old" attribute/value pair by removing
+ * a "remote" value (if it exists).
+ */
+ args->index = args->index2;
+ args->blkno = args->blkno2;
+ args->rmtblkno = args->rmtblkno2;
+ args->rmtblkcnt = args->rmtblkcnt2;
+ if (args->rmtblkno) {
+ error = xfs_attr_rmtval_remove(args);
+ if (error)
+ return(error);
+ }
+
+ /*
+ * Re-find the "old" attribute entry after any split ops.
+ * The INCOMPLETE flag means that we will find the "old"
+ * attr, not the "new" one.
+ */
+ args->flags |= XFS_ATTR_INCOMPLETE;
+ state = xfs_da_state_alloc();
+ state->args = args;
+ state->mp = mp;
+ state->blocksize = state->mp->m_sb.sb_blocksize;
+ state->node_ents = state->mp->m_attr_node_ents;
+ state->inleaf = 0;
+ error = xfs_da_node_lookup_int(state, &retval);
+ if (error)
+ goto out;
+
+ /*
+ * Remove the name and update the hashvals in the tree.
+ */
+ blk = &state->path.blk[ state->path.active-1 ];
+ ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC);
+ error = xfs_attr_leaf_remove(blk->bp, args);
+ xfs_da_fixhashpath(state, &state->path);
+
+ /*
+ * Check to see if the tree needs to be collapsed.
+ */
+ if (retval && (state->path.active > 1)) {
+ XFS_BMAP_INIT(args->flist, args->firstblock);
+ error = xfs_da_join(state);
+ if (!error) {
+ error = xfs_bmap_finish(&args->trans,
+ args->flist,
+ *args->firstblock,
+ &committed);
+ }
+ if (error) {
+ ASSERT(committed);
+ args->trans = NULL;
+ xfs_bmap_cancel(args->flist);
+ goto out;
+ }
+
+ /*
+ * bmap_finish() may have committed the last trans
+ * and started a new one. We need the inode to be
+ * in all transactions.
+ */
+ if (committed) {
+ xfs_trans_ijoin(args->trans, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(args->trans, dp);
+ }
+ }
+
+ /*
+ * Commit and start the next trans in the chain.
+ */
+ if ((error = xfs_attr_rolltrans(&args->trans, dp)))
+ goto out;
+
+ } else if (args->rmtblkno > 0) {
+ /*
+ * Added a "remote" value, just clear the incomplete flag.
+ */
+ error = xfs_attr_leaf_clearflag(args);
+ if (error)
+ goto out;
+ }
+ retval = error = 0;
+
+out:
+ if (state)
+ xfs_da_state_free(state);
+ if (error)
+ return(error);
+ return(retval);
+}
+
+/*
+ * Remove a name from a B-tree attribute list.
+ *
+ * This will involve walking down the Btree, and may involve joining
+ * leaf nodes and even joining intermediate nodes up to and including
+ * the root node (a special case of an intermediate node).
+ */
+STATIC int
+xfs_attr_node_removename(xfs_da_args_t *args)
+{
+ xfs_da_state_t *state;
+ xfs_da_state_blk_t *blk;
+ xfs_inode_t *dp;
+ xfs_dabuf_t *bp;
+ int retval, error, committed;
+
+ /*
+ * Tie a string around our finger to remind us where we are.
+ */
+ dp = args->dp;
+ state = xfs_da_state_alloc();
+ state->args = args;
+ state->mp = dp->i_mount;
+ state->blocksize = state->mp->m_sb.sb_blocksize;
+ state->node_ents = state->mp->m_attr_node_ents;
+
+ /*
+ * Search to see if name exists, and get back a pointer to it.
+ */
+ error = xfs_da_node_lookup_int(state, &retval);
+ if (error || (retval != EEXIST)) {
+ if (error == 0)
+ error = retval;
+ goto out;
+ }
+
+ /*
+ * If there is an out-of-line value, de-allocate the blocks.
+ * This is done before we remove the attribute so that we don't
+ * overflow the maximum size of a transaction and/or hit a deadlock.
+ */
+ blk = &state->path.blk[ state->path.active-1 ];
+ ASSERT(blk->bp != NULL);
+ ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC);
+ if (args->rmtblkno > 0) {
+ /*
+ * Fill in disk block numbers in the state structure
+ * so that we can get the buffers back after we commit
+ * several transactions in the following calls.
+ */
+ error = xfs_attr_fillstate(state);
+ if (error)
+ goto out;
+
+ /*
+ * Mark the attribute as INCOMPLETE, then bunmapi() the
+ * remote value.
+ */
+ error = xfs_attr_leaf_setflag(args);
+ if (error)
+ goto out;
+ error = xfs_attr_rmtval_remove(args);
+ if (error)
+ goto out;
+
+ /*
+ * Refill the state structure with buffers, the prior calls
+ * released our buffers.
+ */
+ error = xfs_attr_refillstate(state);
+ if (error)
+ goto out;
+ }
+
+ /*
+ * Remove the name and update the hashvals in the tree.
+ */
+ blk = &state->path.blk[ state->path.active-1 ];
+ ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC);
+ retval = xfs_attr_leaf_remove(blk->bp, args);
+ xfs_da_fixhashpath(state, &state->path);
+
+ /*
+ * Check to see if the tree needs to be collapsed.
+ */
+ if (retval && (state->path.active > 1)) {
+ XFS_BMAP_INIT(args->flist, args->firstblock);
+ error = xfs_da_join(state);
+ if (!error) {
+ error = xfs_bmap_finish(&args->trans, args->flist,
+ *args->firstblock, &committed);
+ }
+ if (error) {
+ ASSERT(committed);
+ args->trans = NULL;
+ xfs_bmap_cancel(args->flist);
+ goto out;
+ }
+
+ /*
+ * bmap_finish() may have committed the last trans and started
+ * a new one. We need the inode to be in all transactions.
+ */
+ if (committed) {
+ xfs_trans_ijoin(args->trans, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(args->trans, dp);
+ }
+
+ /*
+ * Commit the Btree join operation and start a new trans.
+ */
+ if ((error = xfs_attr_rolltrans(&args->trans, dp)))
+ goto out;
+ }
+
+ /*
+ * If the result is small enough, push it all into the inode.
+ */
+ if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
+ /*
+ * Have to get rid of the copy of this dabuf in the state.
+ */
+ ASSERT(state->path.active == 1);
+ ASSERT(state->path.blk[0].bp);
+ xfs_da_buf_done(state->path.blk[0].bp);
+ state->path.blk[0].bp = NULL;
+
+ error = xfs_da_read_buf(args->trans, args->dp, 0, -1, &bp,
+ XFS_ATTR_FORK);
+ if (error)
+ goto out;
+ ASSERT(INT_GET(((xfs_attr_leafblock_t *)
+ bp->data)->hdr.info.magic, ARCH_CONVERT)
+ == XFS_ATTR_LEAF_MAGIC);
+
+ if (xfs_attr_shortform_allfit(bp, dp)) {
+ XFS_BMAP_INIT(args->flist, args->firstblock);
+ error = xfs_attr_leaf_to_shortform(bp, args);
+ /* bp is gone due to xfs_da_shrink_inode */
+ if (!error) {
+ error = xfs_bmap_finish(&args->trans,
+ args->flist,
+ *args->firstblock,
+ &committed);
+ }
+ if (error) {
+ ASSERT(committed);
+ args->trans = NULL;
+ xfs_bmap_cancel(args->flist);
+ goto out;
+ }
+
+ /*
+ * bmap_finish() may have committed the last trans
+ * and started a new one. We need the inode to be
+ * in all transactions.
+ */
+ if (committed) {
+ xfs_trans_ijoin(args->trans, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(args->trans, dp);
+ }
+ } else
+ xfs_da_brelse(args->trans, bp);
+ }
+ error = 0;
+
+out:
+ xfs_da_state_free(state);
+ return(error);
+}
+
+/*
+ * Fill in the disk block numbers in the state structure for the buffers
+ * that are attached to the state structure.
+ * This is done so that we can quickly reattach ourselves to those buffers
+ * after some set of transaction commit's has released these buffers.
+ */
+STATIC int
+xfs_attr_fillstate(xfs_da_state_t *state)
+{
+ xfs_da_state_path_t *path;
+ xfs_da_state_blk_t *blk;
+ int level;
+
+ /*
+ * Roll down the "path" in the state structure, storing the on-disk
+ * block number for those buffers in the "path".
+ */
+ path = &state->path;
+ ASSERT((path->active >= 0) && (path->active < XFS_DA_NODE_MAXDEPTH));
+ for (blk = path->blk, level = 0; level < path->active; blk++, level++) {
+ if (blk->bp) {
+ blk->disk_blkno = xfs_da_blkno(blk->bp);
+ xfs_da_buf_done(blk->bp);
+ blk->bp = NULL;
+ } else {
+ blk->disk_blkno = 0;
+ }
+ }
+
+ /*
+ * Roll down the "altpath" in the state structure, storing the on-disk
+ * block number for those buffers in the "altpath".
+ */
+ path = &state->altpath;
+ ASSERT((path->active >= 0) && (path->active < XFS_DA_NODE_MAXDEPTH));
+ for (blk = path->blk, level = 0; level < path->active; blk++, level++) {
+ if (blk->bp) {
+ blk->disk_blkno = xfs_da_blkno(blk->bp);
+ xfs_da_buf_done(blk->bp);
+ blk->bp = NULL;
+ } else {
+ blk->disk_blkno = 0;
+ }
+ }
+
+ return(0);
+}
+
+/*
+ * Reattach the buffers to the state structure based on the disk block
+ * numbers stored in the state structure.
+ * This is done after some set of transaction commit's has released those
+ * buffers from our grip.
+ */
+STATIC int
+xfs_attr_refillstate(xfs_da_state_t *state)
+{
+ xfs_da_state_path_t *path;
+ xfs_da_state_blk_t *blk;
+ int level, error;
+
+ /*
+ * Roll down the "path" in the state structure, storing the on-disk
+ * block number for those buffers in the "path".
+ */
+ path = &state->path;
+ ASSERT((path->active >= 0) && (path->active < XFS_DA_NODE_MAXDEPTH));
+ for (blk = path->blk, level = 0; level < path->active; blk++, level++) {
+ if (blk->disk_blkno) {
+ error = xfs_da_read_buf(state->args->trans,
+ state->args->dp,
+ blk->blkno, blk->disk_blkno,
+ &blk->bp, XFS_ATTR_FORK);
+ if (error)
+ return(error);
+ } else {
+ blk->bp = NULL;
+ }
+ }
+
+ /*
+ * Roll down the "altpath" in the state structure, storing the on-disk
+ * block number for those buffers in the "altpath".
+ */
+ path = &state->altpath;
+ ASSERT((path->active >= 0) && (path->active < XFS_DA_NODE_MAXDEPTH));
+ for (blk = path->blk, level = 0; level < path->active; blk++, level++) {
+ if (blk->disk_blkno) {
+ error = xfs_da_read_buf(state->args->trans,
+ state->args->dp,
+ blk->blkno, blk->disk_blkno,
+ &blk->bp, XFS_ATTR_FORK);
+ if (error)
+ return(error);
+ } else {
+ blk->bp = NULL;
+ }
+ }
+
+ return(0);
+}
+
+/*
+ * Write the value associated with an attribute into the out-of-line buffer
+ * that we have defined for it.
+ */
+STATIC int
+xfs_attr_rmtval_set(xfs_da_args_t *args)
+{
+ xfs_mount_t *mp;
+ xfs_fileoff_t lfileoff;
+ xfs_inode_t *dp;
+ xfs_bmbt_irec_t map;
+ xfs_daddr_t dblkno;
+ xfs_caddr_t src;
+ xfs_buf_t *bp;
+ xfs_dablk_t lblkno;
+ int blkcnt, valuelen, nmap, error, tmp, committed;
+
+ dp = args->dp;
+ mp = dp->i_mount;
+ src = args->value;
+
+ /*
+ * Find a "hole" in the attribute address space large enough for
+ * us to drop the new attribute's value into.
+ */
+ blkcnt = XFS_B_TO_FSB(mp, args->valuelen);
+ lfileoff = 0;
+ error = xfs_bmap_first_unused(args->trans, args->dp, blkcnt, &lfileoff,
+ XFS_ATTR_FORK);
+ if (error) {
+ return(error);
+ }
+ args->rmtblkno = lblkno = (xfs_dablk_t)lfileoff;
+ args->rmtblkcnt = blkcnt;
+
+ /*
+ * Roll through the "value", allocating blocks on disk as required.
+ */
+ while (blkcnt > 0) {
+ /*
+ * Allocate a single extent, up to the size of the value.
+ */
+ XFS_BMAP_INIT(args->flist, args->firstblock);
+ nmap = 1;
+ error = xfs_bmapi(args->trans, dp, (xfs_fileoff_t)lblkno,
+ blkcnt,
+ XFS_BMAPI_ATTRFORK | XFS_BMAPI_METADATA |
+ XFS_BMAPI_WRITE,
+ args->firstblock, args->total, &map, &nmap,
+ args->flist);
+ if (!error) {
+ error = xfs_bmap_finish(&args->trans, args->flist,
+ *args->firstblock, &committed);
+ }
+ if (error) {
+ ASSERT(committed);
+ args->trans = NULL;
+ xfs_bmap_cancel(args->flist);
+ return(error);
+ }
+
+ /*
+ * bmap_finish() may have committed the last trans and started
+ * a new one. We need the inode to be in all transactions.
+ */
+ if (committed) {
+ xfs_trans_ijoin(args->trans, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(args->trans, dp);
+ }
+
+ ASSERT(nmap == 1);
+ ASSERT((map.br_startblock != DELAYSTARTBLOCK) &&
+ (map.br_startblock != HOLESTARTBLOCK));
+ lblkno += map.br_blockcount;
+ blkcnt -= map.br_blockcount;
+
+ /*
+ * Start the next trans in the chain.
+ */
+ if ((error = xfs_attr_rolltrans(&args->trans, dp)))
+ return (error);
+ }
+
+ /*
+ * Roll through the "value", copying the attribute value to the
+ * already-allocated blocks. Blocks are written synchronously
+ * so that we can know they are all on disk before we turn off
+ * the INCOMPLETE flag.
+ */
+ lblkno = args->rmtblkno;
+ valuelen = args->valuelen;
+ while (valuelen > 0) {
+ /*
+ * Try to remember where we decided to put the value.
+ */
+ XFS_BMAP_INIT(args->flist, args->firstblock);
+ nmap = 1;
+ error = xfs_bmapi(NULL, dp, (xfs_fileoff_t)lblkno,
+ args->rmtblkcnt,
+ XFS_BMAPI_ATTRFORK | XFS_BMAPI_METADATA,
+ args->firstblock, 0, &map, &nmap, NULL);
+ if (error) {
+ return(error);
+ }
+ ASSERT(nmap == 1);
+ ASSERT((map.br_startblock != DELAYSTARTBLOCK) &&
+ (map.br_startblock != HOLESTARTBLOCK));
+
+ dblkno = XFS_FSB_TO_DADDR(mp, map.br_startblock),
+ blkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount);
+
+ bp = xfs_buf_get_flags(mp->m_ddev_targp, dblkno,
+ blkcnt, XFS_BUF_LOCK);
+ ASSERT(bp);
+ ASSERT(!XFS_BUF_GETERROR(bp));
+
+ tmp = (valuelen < XFS_BUF_SIZE(bp)) ? valuelen :
+ XFS_BUF_SIZE(bp);
+ xfs_biomove(bp, 0, tmp, src, XFS_B_WRITE);
+ if (tmp < XFS_BUF_SIZE(bp))
+ xfs_biozero(bp, tmp, XFS_BUF_SIZE(bp) - tmp);
+ if ((error = xfs_bwrite(mp, bp))) {/* GROT: NOTE: synchronous write */
+ return (error);
+ }
+ src += tmp;
+ valuelen -= tmp;
+
+ lblkno += map.br_blockcount;
+ }
+ ASSERT(valuelen == 0);
+ return(0);
+}
+
+/*
+ * Remove the value associated with an attribute by deleting the
+ * out-of-line buffer that it is stored on.
+ */
+STATIC int
+xfs_attr_rmtval_remove(xfs_da_args_t *args)
+{
+ xfs_mount_t *mp;
+ xfs_bmbt_irec_t map;
+ xfs_buf_t *bp;
+ xfs_daddr_t dblkno;
+ xfs_dablk_t lblkno;
+ int valuelen, blkcnt, nmap, error, done, committed;
+
+ mp = args->dp->i_mount;
+
+ /*
+ * Roll through the "value", invalidating the attribute value's
+ * blocks.
+ */
+ lblkno = args->rmtblkno;
+ valuelen = args->rmtblkcnt;
+ while (valuelen > 0) {
+ /*
+ * Try to remember where we decided to put the value.
+ */
+ XFS_BMAP_INIT(args->flist, args->firstblock);
+ nmap = 1;
+ error = xfs_bmapi(NULL, args->dp, (xfs_fileoff_t)lblkno,
+ args->rmtblkcnt,
+ XFS_BMAPI_ATTRFORK | XFS_BMAPI_METADATA,
+ args->firstblock, 0, &map, &nmap,
+ args->flist);
+ if (error) {
+ return(error);
+ }
+ ASSERT(nmap == 1);
+ ASSERT((map.br_startblock != DELAYSTARTBLOCK) &&
+ (map.br_startblock != HOLESTARTBLOCK));
+
+ dblkno = XFS_FSB_TO_DADDR(mp, map.br_startblock),
+ blkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount);
+
+ /*
+ * If the "remote" value is in the cache, remove it.
+ */
+ bp = xfs_incore(mp->m_ddev_targp, dblkno, blkcnt,
+ XFS_INCORE_TRYLOCK);
+ if (bp) {
+ XFS_BUF_STALE(bp);
+ XFS_BUF_UNDELAYWRITE(bp);
+ xfs_buf_relse(bp);
+ bp = NULL;
+ }
+
+ valuelen -= map.br_blockcount;
+
+ lblkno += map.br_blockcount;
+ }
+
+ /*
+ * Keep de-allocating extents until the remote-value region is gone.
+ */
+ lblkno = args->rmtblkno;
+ blkcnt = args->rmtblkcnt;
+ done = 0;
+ while (!done) {
+ XFS_BMAP_INIT(args->flist, args->firstblock);
+ error = xfs_bunmapi(args->trans, args->dp, lblkno, blkcnt,
+ XFS_BMAPI_ATTRFORK | XFS_BMAPI_METADATA,
+ 1, args->firstblock, args->flist, &done);
+ if (!error) {
+ error = xfs_bmap_finish(&args->trans, args->flist,
+ *args->firstblock, &committed);
+ }
+ if (error) {
+ ASSERT(committed);
+ args->trans = NULL;
+ xfs_bmap_cancel(args->flist);
+ return(error);
+ }
+
+ /*
+ * bmap_finish() may have committed the last trans and started
+ * a new one. We need the inode to be in all transactions.
+ */
+ if (committed) {
+ xfs_trans_ijoin(args->trans, args->dp, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(args->trans, args->dp);
+ }
+
+ /*
+ * Close out trans and start the next one in the chain.
+ */
+ if ((error = xfs_attr_rolltrans(&args->trans, args->dp)))
+ return (error);
+ }
+ return(0);
+}
/*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* Routines to implement leaf blocks of attributes as Btrees of hashed names.
*/
+/*========================================================================
+ * External routines when dirsize < XFS_LITINO(mp).
+ *========================================================================*/
+
+/*
+ * Create the initial contents of a shortform attribute list.
+ */
+int
+xfs_attr_shortform_create(xfs_da_args_t *args)
+{
+ xfs_attr_sf_hdr_t *hdr;
+ xfs_inode_t *dp;
+ xfs_ifork_t *ifp;
+
+ dp = args->dp;
+ ASSERT(dp != NULL);
+ ifp = dp->i_afp;
+ ASSERT(ifp != NULL);
+ ASSERT(ifp->if_bytes == 0);
+ if (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS) {
+ ifp->if_flags &= ~XFS_IFEXTENTS; /* just in case */
+ dp->i_d.di_aformat = XFS_DINODE_FMT_LOCAL;
+ ifp->if_flags |= XFS_IFINLINE;
+ } else {
+ ASSERT(ifp->if_flags & XFS_IFINLINE);
+ }
+ xfs_idata_realloc(dp, sizeof(*hdr), XFS_ATTR_FORK);
+ hdr = (xfs_attr_sf_hdr_t *)ifp->if_u1.if_data;
+ hdr->count = 0;
+ INT_SET(hdr->totsize, ARCH_CONVERT, sizeof(*hdr));
+ xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_ADATA);
+ return(0);
+}
+
+/*
+ * Add a name/value pair to the shortform attribute list.
+ * Overflow from the inode has already been checked for.
+ */
+int
+xfs_attr_shortform_add(xfs_da_args_t *args)
+{
+ xfs_attr_shortform_t *sf;
+ xfs_attr_sf_entry_t *sfe;
+ int i, offset, size;
+ xfs_inode_t *dp;
+ xfs_ifork_t *ifp;
+
+ dp = args->dp;
+ ifp = dp->i_afp;
+ ASSERT(ifp->if_flags & XFS_IFINLINE);
+ sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
+ sfe = &sf->list[0];
+ for (i = 0; i < INT_GET(sf->hdr.count, ARCH_CONVERT);
+ sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
+ if (sfe->namelen != args->namelen)
+ continue;
+ if (memcmp(args->name, sfe->nameval, args->namelen) != 0)
+ continue;
+ if (((args->flags & ATTR_SECURE) != 0) !=
+ ((sfe->flags & XFS_ATTR_SECURE) != 0))
+ continue;
+ if (((args->flags & ATTR_ROOT) != 0) !=
+ ((sfe->flags & XFS_ATTR_ROOT) != 0))
+ continue;
+ return(XFS_ERROR(EEXIST));
+ }
+
+ offset = (char *)sfe - (char *)sf;
+ size = XFS_ATTR_SF_ENTSIZE_BYNAME(args->namelen, args->valuelen);
+ xfs_idata_realloc(dp, size, XFS_ATTR_FORK);
+ sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
+ sfe = (xfs_attr_sf_entry_t *)((char *)sf + offset);
+
+ sfe->namelen = args->namelen;
+ INT_SET(sfe->valuelen, ARCH_CONVERT, args->valuelen);
+ sfe->flags = (args->flags & ATTR_SECURE) ? XFS_ATTR_SECURE :
+ ((args->flags & ATTR_ROOT) ? XFS_ATTR_ROOT : 0);
+ memcpy(sfe->nameval, args->name, args->namelen);
+ memcpy(&sfe->nameval[args->namelen], args->value, args->valuelen);
+ INT_MOD(sf->hdr.count, ARCH_CONVERT, 1);
+ INT_MOD(sf->hdr.totsize, ARCH_CONVERT, size);
+ xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_ADATA);
+
+ return(0);
+}
+
+/*
+ * Remove a name from the shortform attribute list structure.
+ */
+int
+xfs_attr_shortform_remove(xfs_da_args_t *args)
+{
+ xfs_attr_shortform_t *sf;
+ xfs_attr_sf_entry_t *sfe;
+ int base, size=0, end, totsize, i;
+ xfs_inode_t *dp;
+
+ /*
+ * Remove the attribute.
+ */
+ dp = args->dp;
+ base = sizeof(xfs_attr_sf_hdr_t);
+ sf = (xfs_attr_shortform_t *)dp->i_afp->if_u1.if_data;
+ sfe = &sf->list[0];
+ for (i = 0; i < INT_GET(sf->hdr.count, ARCH_CONVERT);
+ sfe = XFS_ATTR_SF_NEXTENTRY(sfe),
+ base += size, i++) {
+ size = XFS_ATTR_SF_ENTSIZE(sfe);
+ if (sfe->namelen != args->namelen)
+ continue;
+ if (memcmp(sfe->nameval, args->name, args->namelen) != 0)
+ continue;
+ if (((args->flags & ATTR_SECURE) != 0) !=
+ ((sfe->flags & XFS_ATTR_SECURE) != 0))
+ continue;
+ if (((args->flags & ATTR_ROOT) != 0) !=
+ ((sfe->flags & XFS_ATTR_ROOT) != 0))
+ continue;
+ break;
+ }
+ if (i == INT_GET(sf->hdr.count, ARCH_CONVERT))
+ return(XFS_ERROR(ENOATTR));
+
+ end = base + size;
+ totsize = INT_GET(sf->hdr.totsize, ARCH_CONVERT);
+ if (end != totsize) {
+ memmove(&((char *)sf)[base], &((char *)sf)[end],
+ totsize - end);
+ }
+ INT_MOD(sf->hdr.count, ARCH_CONVERT, -1);
+ INT_MOD(sf->hdr.totsize, ARCH_CONVERT, -size);
+ xfs_idata_realloc(dp, -size, XFS_ATTR_FORK);
+ xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_ADATA);
+
+ return(0);
+}
+
+/*
+ * Look up a name in a shortform attribute list structure.
+ */
+/*ARGSUSED*/
+int
+xfs_attr_shortform_lookup(xfs_da_args_t *args)
+{
+ xfs_attr_shortform_t *sf;
+ xfs_attr_sf_entry_t *sfe;
+ int i;
+ xfs_ifork_t *ifp;
+
+ ifp = args->dp->i_afp;
+ ASSERT(ifp->if_flags & XFS_IFINLINE);
+ sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
+ sfe = &sf->list[0];
+ for (i = 0; i < INT_GET(sf->hdr.count, ARCH_CONVERT);
+ sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
+ if (sfe->namelen != args->namelen)
+ continue;
+ if (memcmp(args->name, sfe->nameval, args->namelen) != 0)
+ continue;
+ if (((args->flags & ATTR_SECURE) != 0) !=
+ ((sfe->flags & XFS_ATTR_SECURE) != 0))
+ continue;
+ if (((args->flags & ATTR_ROOT) != 0) !=
+ ((sfe->flags & XFS_ATTR_ROOT) != 0))
+ continue;
+ return(XFS_ERROR(EEXIST));
+ }
+ return(XFS_ERROR(ENOATTR));
+}
+
+/*
+ * Convert from using the shortform to the leaf.
+ */
+int
+xfs_attr_shortform_to_leaf(xfs_da_args_t *args)
+{
+ xfs_inode_t *dp;
+ xfs_attr_shortform_t *sf;
+ xfs_attr_sf_entry_t *sfe;
+ xfs_da_args_t nargs;
+ char *tmpbuffer;
+ int error, i, size;
+ xfs_dablk_t blkno;
+ xfs_dabuf_t *bp;
+ xfs_ifork_t *ifp;
+
+ dp = args->dp;
+ ifp = dp->i_afp;
+ sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
+ size = INT_GET(sf->hdr.totsize, ARCH_CONVERT);
+ tmpbuffer = kmem_alloc(size, KM_SLEEP);
+ ASSERT(tmpbuffer != NULL);
+ memcpy(tmpbuffer, ifp->if_u1.if_data, size);
+ sf = (xfs_attr_shortform_t *)tmpbuffer;
+
+ xfs_idata_realloc(dp, -size, XFS_ATTR_FORK);
+ bp = NULL;
+ error = xfs_da_grow_inode(args, &blkno);
+ if (error) {
+ /*
+ * If we hit an IO error middle of the transaction inside
+ * grow_inode(), we may have inconsistent data. Bail out.
+ */
+ if (error == EIO)
+ goto out;
+ xfs_idata_realloc(dp, size, XFS_ATTR_FORK); /* try to put */
+ memcpy(ifp->if_u1.if_data, tmpbuffer, size); /* it back */
+ goto out;
+ }
+
+ ASSERT(blkno == 0);
+ error = xfs_attr_leaf_create(args, blkno, &bp);
+ if (error) {
+ error = xfs_da_shrink_inode(args, 0, bp);
+ bp = NULL;
+ if (error)
+ goto out;
+ xfs_idata_realloc(dp, size, XFS_ATTR_FORK); /* try to put */
+ memcpy(ifp->if_u1.if_data, tmpbuffer, size); /* it back */
+ goto out;
+ }
+
+ memset((char *)&nargs, 0, sizeof(nargs));
+ nargs.dp = dp;
+ nargs.firstblock = args->firstblock;
+ nargs.flist = args->flist;
+ nargs.total = args->total;
+ nargs.whichfork = XFS_ATTR_FORK;
+ nargs.trans = args->trans;
+ nargs.oknoent = 1;
+
+ sfe = &sf->list[0];
+ for (i = 0; i < INT_GET(sf->hdr.count, ARCH_CONVERT); i++) {
+ nargs.name = (char *)sfe->nameval;
+ nargs.namelen = sfe->namelen;
+ nargs.value = (char *)&sfe->nameval[nargs.namelen];
+ nargs.valuelen = INT_GET(sfe->valuelen, ARCH_CONVERT);
+ nargs.hashval = xfs_da_hashname((char *)sfe->nameval,
+ sfe->namelen);
+ nargs.flags = (sfe->flags & XFS_ATTR_SECURE) ? ATTR_SECURE :
+ ((sfe->flags & XFS_ATTR_ROOT) ? ATTR_ROOT : 0);
+ error = xfs_attr_leaf_lookup_int(bp, &nargs); /* set a->index */
+ ASSERT(error == ENOATTR);
+ error = xfs_attr_leaf_add(bp, &nargs);
+ ASSERT(error != ENOSPC);
+ if (error)
+ goto out;
+ sfe = XFS_ATTR_SF_NEXTENTRY(sfe);
+ }
+ error = 0;
+
+out:
+ if(bp)
+ xfs_da_buf_done(bp);
+ kmem_free(tmpbuffer, size);
+ return(error);
+}
+
+/*
+ * Check a leaf attribute block to see if all the entries would fit into
+ * a shortform attribute list.
+ */
+int
+xfs_attr_shortform_allfit(xfs_dabuf_t *bp, xfs_inode_t *dp)
+{
+ xfs_attr_leafblock_t *leaf;
+ xfs_attr_leaf_entry_t *entry;
+ xfs_attr_leaf_name_local_t *name_loc;
+ int bytes, i;
+
+ leaf = bp->data;
+ ASSERT(INT_GET(leaf->hdr.info.magic, ARCH_CONVERT)
+ == XFS_ATTR_LEAF_MAGIC);
+
+ entry = &leaf->entries[0];
+ bytes = sizeof(struct xfs_attr_sf_hdr);
+ for (i = 0; i < INT_GET(leaf->hdr.count, ARCH_CONVERT); entry++, i++) {
+ if (entry->flags & XFS_ATTR_INCOMPLETE)
+ continue; /* don't copy partial entries */
+ if (!(entry->flags & XFS_ATTR_LOCAL))
+ return(0);
+ name_loc = XFS_ATTR_LEAF_NAME_LOCAL(leaf, i);
+ if (name_loc->namelen >= XFS_ATTR_SF_ENTSIZE_MAX)
+ return(0);
+ if (INT_GET(name_loc->valuelen, ARCH_CONVERT) >= XFS_ATTR_SF_ENTSIZE_MAX)
+ return(0);
+ bytes += sizeof(struct xfs_attr_sf_entry)-1
+ + name_loc->namelen
+ + INT_GET(name_loc->valuelen, ARCH_CONVERT);
+ }
+ return( bytes < XFS_IFORK_ASIZE(dp) );
+}
+
+/*
+ * Convert a leaf attribute list to shortform attribute list
+ */
+int
+xfs_attr_leaf_to_shortform(xfs_dabuf_t *bp, xfs_da_args_t *args)
+{
+ xfs_attr_leafblock_t *leaf;
+ xfs_attr_leaf_entry_t *entry;
+ xfs_attr_leaf_name_local_t *name_loc;
+ xfs_da_args_t nargs;
+ xfs_inode_t *dp;
+ char *tmpbuffer;
+ int error, i;
+
+ dp = args->dp;
+ tmpbuffer = kmem_alloc(XFS_LBSIZE(dp->i_mount), KM_SLEEP);
+ ASSERT(tmpbuffer != NULL);
+
+ ASSERT(bp != NULL);
+ memcpy(tmpbuffer, bp->data, XFS_LBSIZE(dp->i_mount));
+ leaf = (xfs_attr_leafblock_t *)tmpbuffer;
+ ASSERT(INT_GET(leaf->hdr.info.magic, ARCH_CONVERT)
+ == XFS_ATTR_LEAF_MAGIC);
+ memset(bp->data, 0, XFS_LBSIZE(dp->i_mount));
+
+ /*
+ * Clean out the prior contents of the attribute list.
+ */
+ error = xfs_da_shrink_inode(args, 0, bp);
+ if (error)
+ goto out;
+ error = xfs_attr_shortform_create(args);
+ if (error)
+ goto out;
+
+ /*
+ * Copy the attributes
+ */
+ memset((char *)&nargs, 0, sizeof(nargs));
+ nargs.dp = dp;
+ nargs.firstblock = args->firstblock;
+ nargs.flist = args->flist;
+ nargs.total = args->total;
+ nargs.whichfork = XFS_ATTR_FORK;
+ nargs.trans = args->trans;
+ nargs.oknoent = 1;
+ entry = &leaf->entries[0];
+ for (i = 0; i < INT_GET(leaf->hdr.count, ARCH_CONVERT); entry++, i++) {
+ if (entry->flags & XFS_ATTR_INCOMPLETE)
+ continue; /* don't copy partial entries */
+ if (!entry->nameidx)
+ continue;
+ ASSERT(entry->flags & XFS_ATTR_LOCAL);
+ name_loc = XFS_ATTR_LEAF_NAME_LOCAL(leaf, i);
+ nargs.name = (char *)name_loc->nameval;
+ nargs.namelen = name_loc->namelen;
+ nargs.value = (char *)&name_loc->nameval[nargs.namelen];
+ nargs.valuelen = INT_GET(name_loc->valuelen, ARCH_CONVERT);
+ nargs.hashval = INT_GET(entry->hashval, ARCH_CONVERT);
+ nargs.flags = (entry->flags & XFS_ATTR_SECURE) ? ATTR_SECURE :
+ ((entry->flags & XFS_ATTR_ROOT) ? ATTR_ROOT : 0);
+ xfs_attr_shortform_add(&nargs);
+ }
+ error = 0;
+
+out:
+ kmem_free(tmpbuffer, XFS_LBSIZE(dp->i_mount));
+ return(error);
+}
+
+/*
+ * Convert from using a single leaf to a root node and a leaf.
+ */
+int
+xfs_attr_leaf_to_node(xfs_da_args_t *args)
+{
+ xfs_attr_leafblock_t *leaf;
+ xfs_da_intnode_t *node;
+ xfs_inode_t *dp;
+ xfs_dabuf_t *bp1, *bp2;
+ xfs_dablk_t blkno;
+ int error;
+
+ dp = args->dp;
+ bp1 = bp2 = NULL;
+ error = xfs_da_grow_inode(args, &blkno);
+ if (error)
+ goto out;
+ error = xfs_da_read_buf(args->trans, args->dp, 0, -1, &bp1,
+ XFS_ATTR_FORK);
+ if (error)
+ goto out;
+ ASSERT(bp1 != NULL);
+ bp2 = NULL;
+ error = xfs_da_get_buf(args->trans, args->dp, blkno, -1, &bp2,
+ XFS_ATTR_FORK);
+ if (error)
+ goto out;
+ ASSERT(bp2 != NULL);
+ memcpy(bp2->data, bp1->data, XFS_LBSIZE(dp->i_mount));
+ xfs_da_buf_done(bp1);
+ bp1 = NULL;
+ xfs_da_log_buf(args->trans, bp2, 0, XFS_LBSIZE(dp->i_mount) - 1);
+
+ /*
+ * Set up the new root node.
+ */
+ error = xfs_da_node_create(args, 0, 1, &bp1, XFS_ATTR_FORK);
+ if (error)
+ goto out;
+ node = bp1->data;
+ leaf = bp2->data;
+ ASSERT(INT_GET(leaf->hdr.info.magic, ARCH_CONVERT)
+ == XFS_ATTR_LEAF_MAGIC);
+ /* both on-disk, don't endian-flip twice */
+ node->btree[0].hashval =
+ leaf->entries[INT_GET(leaf->hdr.count, ARCH_CONVERT)-1 ].hashval;
+ INT_SET(node->btree[0].before, ARCH_CONVERT, blkno);
+ INT_SET(node->hdr.count, ARCH_CONVERT, 1);
+ xfs_da_log_buf(args->trans, bp1, 0, XFS_LBSIZE(dp->i_mount) - 1);
+ error = 0;
+out:
+ if (bp1)
+ xfs_da_buf_done(bp1);
+ if (bp2)
+ xfs_da_buf_done(bp2);
+ return(error);
+}
+
/*========================================================================
* Routines used for growing the Btree.
*========================================================================*/
return(0);
}
+/*
+ * Remove a name from the leaf attribute list structure.
+ *
+ * Return 1 if leaf is less than 37% full, 0 if >= 37% full.
+ * If two leaves are 37% full, when combined they will leave 25% free.
+ */
+int
+xfs_attr_leaf_remove(xfs_dabuf_t *bp, xfs_da_args_t *args)
+{
+ xfs_attr_leafblock_t *leaf;
+ xfs_attr_leaf_hdr_t *hdr;
+ xfs_attr_leaf_map_t *map;
+ xfs_attr_leaf_entry_t *entry;
+ int before, after, smallest, entsize;
+ int tablesize, tmp, i;
+ xfs_mount_t *mp;
+
+ leaf = bp->data;
+ ASSERT(INT_GET(leaf->hdr.info.magic, ARCH_CONVERT)
+ == XFS_ATTR_LEAF_MAGIC);
+ hdr = &leaf->hdr;
+ mp = args->trans->t_mountp;
+ ASSERT((INT_GET(hdr->count, ARCH_CONVERT) > 0)
+ && (INT_GET(hdr->count, ARCH_CONVERT) < (XFS_LBSIZE(mp)/8)));
+ ASSERT((args->index >= 0)
+ && (args->index < INT_GET(hdr->count, ARCH_CONVERT)));
+ ASSERT(INT_GET(hdr->firstused, ARCH_CONVERT)
+ >= ((INT_GET(hdr->count, ARCH_CONVERT)
+ * sizeof(*entry))+sizeof(*hdr)));
+ entry = &leaf->entries[args->index];
+ ASSERT(INT_GET(entry->nameidx, ARCH_CONVERT)
+ >= INT_GET(hdr->firstused, ARCH_CONVERT));
+ ASSERT(INT_GET(entry->nameidx, ARCH_CONVERT) < XFS_LBSIZE(mp));
+
+ /*
+ * Scan through free region table:
+ * check for adjacency of free'd entry with an existing one,
+ * find smallest free region in case we need to replace it,
+ * adjust any map that borders the entry table,
+ */
+ tablesize = INT_GET(hdr->count, ARCH_CONVERT)
+ * sizeof(xfs_attr_leaf_entry_t)
+ + sizeof(xfs_attr_leaf_hdr_t);
+ map = &hdr->freemap[0];
+ tmp = INT_GET(map->size, ARCH_CONVERT);
+ before = after = -1;
+ smallest = XFS_ATTR_LEAF_MAPSIZE - 1;
+ entsize = xfs_attr_leaf_entsize(leaf, args->index);
+ for (i = 0; i < XFS_ATTR_LEAF_MAPSIZE; map++, i++) {
+ ASSERT(INT_GET(map->base, ARCH_CONVERT) < XFS_LBSIZE(mp));
+ ASSERT(INT_GET(map->size, ARCH_CONVERT) < XFS_LBSIZE(mp));
+ if (INT_GET(map->base, ARCH_CONVERT) == tablesize) {
+ INT_MOD(map->base, ARCH_CONVERT,
+ -sizeof(xfs_attr_leaf_entry_t));
+ INT_MOD(map->size, ARCH_CONVERT,
+ sizeof(xfs_attr_leaf_entry_t));
+ }
+
+ if ((INT_GET(map->base, ARCH_CONVERT)
+ + INT_GET(map->size, ARCH_CONVERT))
+ == INT_GET(entry->nameidx, ARCH_CONVERT)) {
+ before = i;
+ } else if (INT_GET(map->base, ARCH_CONVERT)
+ == (INT_GET(entry->nameidx, ARCH_CONVERT) + entsize)) {
+ after = i;
+ } else if (INT_GET(map->size, ARCH_CONVERT) < tmp) {
+ tmp = INT_GET(map->size, ARCH_CONVERT);
+ smallest = i;
+ }
+ }
+
+ /*
+ * Coalesce adjacent freemap regions,
+ * or replace the smallest region.
+ */
+ if ((before >= 0) || (after >= 0)) {
+ if ((before >= 0) && (after >= 0)) {
+ map = &hdr->freemap[before];
+ INT_MOD(map->size, ARCH_CONVERT, entsize);
+ INT_MOD(map->size, ARCH_CONVERT,
+ INT_GET(hdr->freemap[after].size,
+ ARCH_CONVERT));
+ hdr->freemap[after].base = 0;
+ hdr->freemap[after].size = 0;
+ } else if (before >= 0) {
+ map = &hdr->freemap[before];
+ INT_MOD(map->size, ARCH_CONVERT, entsize);
+ } else {
+ map = &hdr->freemap[after];
+ /* both on-disk, don't endian flip twice */
+ map->base = entry->nameidx;
+ INT_MOD(map->size, ARCH_CONVERT, entsize);
+ }
+ } else {
+ /*
+ * Replace smallest region (if it is smaller than free'd entry)
+ */
+ map = &hdr->freemap[smallest];
+ if (INT_GET(map->size, ARCH_CONVERT) < entsize) {
+ INT_SET(map->base, ARCH_CONVERT,
+ INT_GET(entry->nameidx, ARCH_CONVERT));
+ INT_SET(map->size, ARCH_CONVERT, entsize);
+ }
+ }
+
+ /*
+ * Did we remove the first entry?
+ */
+ if (INT_GET(entry->nameidx, ARCH_CONVERT)
+ == INT_GET(hdr->firstused, ARCH_CONVERT))
+ smallest = 1;
+ else
+ smallest = 0;
+
+ /*
+ * Compress the remaining entries and zero out the removed stuff.
+ */
+ memset(XFS_ATTR_LEAF_NAME(leaf, args->index), 0, entsize);
+ INT_MOD(hdr->usedbytes, ARCH_CONVERT, -entsize);
+ xfs_da_log_buf(args->trans, bp,
+ XFS_DA_LOGRANGE(leaf, XFS_ATTR_LEAF_NAME(leaf, args->index),
+ entsize));
+
+ tmp = (INT_GET(hdr->count, ARCH_CONVERT) - args->index)
+ * sizeof(xfs_attr_leaf_entry_t);
+ memmove((char *)entry, (char *)(entry+1), tmp);
+ INT_MOD(hdr->count, ARCH_CONVERT, -1);
+ xfs_da_log_buf(args->trans, bp,
+ XFS_DA_LOGRANGE(leaf, entry, tmp + sizeof(*entry)));
+ entry = &leaf->entries[INT_GET(hdr->count, ARCH_CONVERT)];
+ memset((char *)entry, 0, sizeof(xfs_attr_leaf_entry_t));
+
+ /*
+ * If we removed the first entry, re-find the first used byte
+ * in the name area. Note that if the entry was the "firstused",
+ * then we don't have a "hole" in our block resulting from
+ * removing the name.
+ */
+ if (smallest) {
+ tmp = XFS_LBSIZE(mp);
+ entry = &leaf->entries[0];
+ for (i = INT_GET(hdr->count, ARCH_CONVERT)-1;
+ i >= 0; entry++, i--) {
+ ASSERT(INT_GET(entry->nameidx, ARCH_CONVERT)
+ >= INT_GET(hdr->firstused, ARCH_CONVERT));
+ ASSERT(INT_GET(entry->nameidx, ARCH_CONVERT)
+ < XFS_LBSIZE(mp));
+ if (INT_GET(entry->nameidx, ARCH_CONVERT) < tmp)
+ tmp = INT_GET(entry->nameidx, ARCH_CONVERT);
+ }
+ INT_SET(hdr->firstused, ARCH_CONVERT, tmp);
+ if (!hdr->firstused) {
+ INT_SET(hdr->firstused, ARCH_CONVERT,
+ tmp - XFS_ATTR_LEAF_NAME_ALIGN);
+ }
+ } else {
+ hdr->holes = 1; /* mark as needing compaction */
+ }
+ xfs_da_log_buf(args->trans, bp,
+ XFS_DA_LOGRANGE(leaf, hdr, sizeof(*hdr)));
+
+ /*
+ * Check if leaf is less than 50% full, caller may want to
+ * "join" the leaf with a sibling if so.
+ */
+ tmp = sizeof(xfs_attr_leaf_hdr_t);
+ tmp += INT_GET(leaf->hdr.count, ARCH_CONVERT)
+ * sizeof(xfs_attr_leaf_entry_t);
+ tmp += INT_GET(leaf->hdr.usedbytes, ARCH_CONVERT);
+ return(tmp < mp->m_attr_magicpct); /* leaf is < 37% full */
+}
+
/*
* Move all the attribute list entries from drop_leaf into save_leaf.
*/
ARCH_CONVERT);
}
+/*========================================================================
+ * Routines used for finding things in the Btree.
+ *========================================================================*/
+
+/*
+ * Look up a name in a leaf attribute list structure.
+ * This is the internal routine, it uses the caller's buffer.
+ *
+ * Note that duplicate keys are allowed, but only check within the
+ * current leaf node. The Btree code must check in adjacent leaf nodes.
+ *
+ * Return in args->index the index into the entry[] array of either
+ * the found entry, or where the entry should have been (insert before
+ * that entry).
+ *
+ * Don't change the args->value unless we find the attribute.
+ */
+int
+xfs_attr_leaf_lookup_int(xfs_dabuf_t *bp, xfs_da_args_t *args)
+{
+ xfs_attr_leafblock_t *leaf;
+ xfs_attr_leaf_entry_t *entry;
+ xfs_attr_leaf_name_local_t *name_loc;
+ xfs_attr_leaf_name_remote_t *name_rmt;
+ int probe, span;
+ xfs_dahash_t hashval;
+
+ leaf = bp->data;
+ ASSERT(INT_GET(leaf->hdr.info.magic, ARCH_CONVERT)
+ == XFS_ATTR_LEAF_MAGIC);
+ ASSERT(INT_GET(leaf->hdr.count, ARCH_CONVERT)
+ < (XFS_LBSIZE(args->dp->i_mount)/8));
+
+ /*
+ * Binary search. (note: small blocks will skip this loop)
+ */
+ hashval = args->hashval;
+ probe = span = INT_GET(leaf->hdr.count, ARCH_CONVERT) / 2;
+ for (entry = &leaf->entries[probe]; span > 4;
+ entry = &leaf->entries[probe]) {
+ span /= 2;
+ if (INT_GET(entry->hashval, ARCH_CONVERT) < hashval)
+ probe += span;
+ else if (INT_GET(entry->hashval, ARCH_CONVERT) > hashval)
+ probe -= span;
+ else
+ break;
+ }
+ ASSERT((probe >= 0) &&
+ (!leaf->hdr.count
+ || (probe < INT_GET(leaf->hdr.count, ARCH_CONVERT))));
+ ASSERT((span <= 4) || (INT_GET(entry->hashval, ARCH_CONVERT)
+ == hashval));
+
+ /*
+ * Since we may have duplicate hashval's, find the first matching
+ * hashval in the leaf.
+ */
+ while ((probe > 0) && (INT_GET(entry->hashval, ARCH_CONVERT)
+ >= hashval)) {
+ entry--;
+ probe--;
+ }
+ while ((probe < INT_GET(leaf->hdr.count, ARCH_CONVERT))
+ && (INT_GET(entry->hashval, ARCH_CONVERT) < hashval)) {
+ entry++;
+ probe++;
+ }
+ if ((probe == INT_GET(leaf->hdr.count, ARCH_CONVERT))
+ || (INT_GET(entry->hashval, ARCH_CONVERT) != hashval)) {
+ args->index = probe;
+ return(XFS_ERROR(ENOATTR));
+ }
+
+ /*
+ * Duplicate keys may be present, so search all of them for a match.
+ */
+ for ( ; (probe < INT_GET(leaf->hdr.count, ARCH_CONVERT))
+ && (INT_GET(entry->hashval, ARCH_CONVERT) == hashval);
+ entry++, probe++) {
+/*
+ * GROT: Add code to remove incomplete entries.
+ */
+ /*
+ * If we are looking for INCOMPLETE entries, show only those.
+ * If we are looking for complete entries, show only those.
+ */
+ if ((args->flags & XFS_ATTR_INCOMPLETE) !=
+ (entry->flags & XFS_ATTR_INCOMPLETE)) {
+ continue;
+ }
+ if (entry->flags & XFS_ATTR_LOCAL) {
+ name_loc = XFS_ATTR_LEAF_NAME_LOCAL(leaf, probe);
+ if (name_loc->namelen != args->namelen)
+ continue;
+ if (memcmp(args->name, (char *)name_loc->nameval,
+ args->namelen) != 0)
+ continue;
+ if (((args->flags & ATTR_SECURE) != 0) !=
+ ((entry->flags & XFS_ATTR_SECURE) != 0))
+ continue;
+ if (((args->flags & ATTR_ROOT) != 0) !=
+ ((entry->flags & XFS_ATTR_ROOT) != 0))
+ continue;
+ args->index = probe;
+ return(XFS_ERROR(EEXIST));
+ } else {
+ name_rmt = XFS_ATTR_LEAF_NAME_REMOTE(leaf, probe);
+ if (name_rmt->namelen != args->namelen)
+ continue;
+ if (memcmp(args->name, (char *)name_rmt->name,
+ args->namelen) != 0)
+ continue;
+ if (((args->flags & ATTR_SECURE) != 0) !=
+ ((entry->flags & XFS_ATTR_SECURE) != 0))
+ continue;
+ if (((args->flags & ATTR_ROOT) != 0) !=
+ ((entry->flags & XFS_ATTR_ROOT) != 0))
+ continue;
+ args->index = probe;
+ args->rmtblkno
+ = INT_GET(name_rmt->valueblk, ARCH_CONVERT);
+ args->rmtblkcnt = XFS_B_TO_FSB(args->dp->i_mount,
+ INT_GET(name_rmt->valuelen,
+ ARCH_CONVERT));
+ return(XFS_ERROR(EEXIST));
+ }
+ }
+ args->index = probe;
+ return(XFS_ERROR(ENOATTR));
+}
+
/*========================================================================
* Utility routines.
}
return(size);
}
+
+/*========================================================================
+ * Manage the INCOMPLETE flag in a leaf entry
+ *========================================================================*/
+
+/*
+ * Clear the INCOMPLETE flag on an entry in a leaf block.
+ */
+int
+xfs_attr_leaf_clearflag(xfs_da_args_t *args)
+{
+ xfs_attr_leafblock_t *leaf;
+ xfs_attr_leaf_entry_t *entry;
+ xfs_attr_leaf_name_remote_t *name_rmt;
+ xfs_dabuf_t *bp;
+ int error;
+#ifdef DEBUG
+ xfs_attr_leaf_name_local_t *name_loc;
+ int namelen;
+ char *name;
+#endif /* DEBUG */
+
+ /*
+ * Set up the operation.
+ */
+ error = xfs_da_read_buf(args->trans, args->dp, args->blkno, -1, &bp,
+ XFS_ATTR_FORK);
+ if (error) {
+ return(error);
+ }
+ ASSERT(bp != NULL);
+
+ leaf = bp->data;
+ ASSERT(INT_GET(leaf->hdr.info.magic, ARCH_CONVERT)
+ == XFS_ATTR_LEAF_MAGIC);
+ ASSERT(args->index < INT_GET(leaf->hdr.count, ARCH_CONVERT));
+ ASSERT(args->index >= 0);
+ entry = &leaf->entries[ args->index ];
+ ASSERT(entry->flags & XFS_ATTR_INCOMPLETE);
+
+#ifdef DEBUG
+ if (entry->flags & XFS_ATTR_LOCAL) {
+ name_loc = XFS_ATTR_LEAF_NAME_LOCAL(leaf, args->index);
+ namelen = name_loc->namelen;
+ name = (char *)name_loc->nameval;
+ } else {
+ name_rmt = XFS_ATTR_LEAF_NAME_REMOTE(leaf, args->index);
+ namelen = name_rmt->namelen;
+ name = (char *)name_rmt->name;
+ }
+ ASSERT(INT_GET(entry->hashval, ARCH_CONVERT) == args->hashval);
+ ASSERT(namelen == args->namelen);
+ ASSERT(memcmp(name, args->name, namelen) == 0);
+#endif /* DEBUG */
+
+ entry->flags &= ~XFS_ATTR_INCOMPLETE;
+ xfs_da_log_buf(args->trans, bp,
+ XFS_DA_LOGRANGE(leaf, entry, sizeof(*entry)));
+
+ if (args->rmtblkno) {
+ ASSERT((entry->flags & XFS_ATTR_LOCAL) == 0);
+ name_rmt = XFS_ATTR_LEAF_NAME_REMOTE(leaf, args->index);
+ INT_SET(name_rmt->valueblk, ARCH_CONVERT, args->rmtblkno);
+ INT_SET(name_rmt->valuelen, ARCH_CONVERT, args->valuelen);
+ xfs_da_log_buf(args->trans, bp,
+ XFS_DA_LOGRANGE(leaf, name_rmt, sizeof(*name_rmt)));
+ }
+ xfs_da_buf_done(bp);
+
+ /*
+ * Commit the flag value change and start the next trans in series.
+ */
+ error = xfs_attr_rolltrans(&args->trans, args->dp);
+
+ return(error);
+}
+
+/*
+ * Set the INCOMPLETE flag on an entry in a leaf block.
+ */
+int
+xfs_attr_leaf_setflag(xfs_da_args_t *args)
+{
+ xfs_attr_leafblock_t *leaf;
+ xfs_attr_leaf_entry_t *entry;
+ xfs_attr_leaf_name_remote_t *name_rmt;
+ xfs_dabuf_t *bp;
+ int error;
+
+ /*
+ * Set up the operation.
+ */
+ error = xfs_da_read_buf(args->trans, args->dp, args->blkno, -1, &bp,
+ XFS_ATTR_FORK);
+ if (error) {
+ return(error);
+ }
+ ASSERT(bp != NULL);
+
+ leaf = bp->data;
+ ASSERT(INT_GET(leaf->hdr.info.magic, ARCH_CONVERT)
+ == XFS_ATTR_LEAF_MAGIC);
+ ASSERT(args->index < INT_GET(leaf->hdr.count, ARCH_CONVERT));
+ ASSERT(args->index >= 0);
+ entry = &leaf->entries[ args->index ];
+
+ ASSERT((entry->flags & XFS_ATTR_INCOMPLETE) == 0);
+ entry->flags |= XFS_ATTR_INCOMPLETE;
+ xfs_da_log_buf(args->trans, bp,
+ XFS_DA_LOGRANGE(leaf, entry, sizeof(*entry)));
+ if ((entry->flags & XFS_ATTR_LOCAL) == 0) {
+ name_rmt = XFS_ATTR_LEAF_NAME_REMOTE(leaf, args->index);
+ name_rmt->valueblk = 0;
+ name_rmt->valuelen = 0;
+ xfs_da_log_buf(args->trans, bp,
+ XFS_DA_LOGRANGE(leaf, name_rmt, sizeof(*name_rmt)));
+ }
+ xfs_da_buf_done(bp);
+
+ /*
+ * Commit the flag value change and start the next trans in series.
+ */
+ error = xfs_attr_rolltrans(&args->trans, args->dp);
+
+ return(error);
+}
+
+/*
+ * In a single transaction, clear the INCOMPLETE flag on the leaf entry
+ * given by args->blkno/index and set the INCOMPLETE flag on the leaf
+ * entry given by args->blkno2/index2.
+ *
+ * Note that they could be in different blocks, or in the same block.
+ */
+int
+xfs_attr_leaf_flipflags(xfs_da_args_t *args)
+{
+ xfs_attr_leafblock_t *leaf1, *leaf2;
+ xfs_attr_leaf_entry_t *entry1, *entry2;
+ xfs_attr_leaf_name_remote_t *name_rmt;
+ xfs_dabuf_t *bp1, *bp2;
+ int error;
+#ifdef DEBUG
+ xfs_attr_leaf_name_local_t *name_loc;
+ int namelen1, namelen2;
+ char *name1, *name2;
+#endif /* DEBUG */
+
+ /*
+ * Read the block containing the "old" attr
+ */
+ error = xfs_da_read_buf(args->trans, args->dp, args->blkno, -1, &bp1,
+ XFS_ATTR_FORK);
+ if (error) {
+ return(error);
+ }
+ ASSERT(bp1 != NULL);
+
+ /*
+ * Read the block containing the "new" attr, if it is different
+ */
+ if (args->blkno2 != args->blkno) {
+ error = xfs_da_read_buf(args->trans, args->dp, args->blkno2,
+ -1, &bp2, XFS_ATTR_FORK);
+ if (error) {
+ return(error);
+ }
+ ASSERT(bp2 != NULL);
+ } else {
+ bp2 = bp1;
+ }
+
+ leaf1 = bp1->data;
+ ASSERT(INT_GET(leaf1->hdr.info.magic, ARCH_CONVERT)
+ == XFS_ATTR_LEAF_MAGIC);
+ ASSERT(args->index < INT_GET(leaf1->hdr.count, ARCH_CONVERT));
+ ASSERT(args->index >= 0);
+ entry1 = &leaf1->entries[ args->index ];
+
+ leaf2 = bp2->data;
+ ASSERT(INT_GET(leaf2->hdr.info.magic, ARCH_CONVERT)
+ == XFS_ATTR_LEAF_MAGIC);
+ ASSERT(args->index2 < INT_GET(leaf2->hdr.count, ARCH_CONVERT));
+ ASSERT(args->index2 >= 0);
+ entry2 = &leaf2->entries[ args->index2 ];
+
+#ifdef DEBUG
+ if (entry1->flags & XFS_ATTR_LOCAL) {
+ name_loc = XFS_ATTR_LEAF_NAME_LOCAL(leaf1, args->index);
+ namelen1 = name_loc->namelen;
+ name1 = (char *)name_loc->nameval;
+ } else {
+ name_rmt = XFS_ATTR_LEAF_NAME_REMOTE(leaf1, args->index);
+ namelen1 = name_rmt->namelen;
+ name1 = (char *)name_rmt->name;
+ }
+ if (entry2->flags & XFS_ATTR_LOCAL) {
+ name_loc = XFS_ATTR_LEAF_NAME_LOCAL(leaf2, args->index2);
+ namelen2 = name_loc->namelen;
+ name2 = (char *)name_loc->nameval;
+ } else {
+ name_rmt = XFS_ATTR_LEAF_NAME_REMOTE(leaf2, args->index2);
+ namelen2 = name_rmt->namelen;
+ name2 = (char *)name_rmt->name;
+ }
+ ASSERT(INT_GET(entry1->hashval, ARCH_CONVERT) == INT_GET(entry2->hashval, ARCH_CONVERT));
+ ASSERT(namelen1 == namelen2);
+ ASSERT(memcmp(name1, name2, namelen1) == 0);
+#endif /* DEBUG */
+
+ ASSERT(entry1->flags & XFS_ATTR_INCOMPLETE);
+ ASSERT((entry2->flags & XFS_ATTR_INCOMPLETE) == 0);
+
+ entry1->flags &= ~XFS_ATTR_INCOMPLETE;
+ xfs_da_log_buf(args->trans, bp1,
+ XFS_DA_LOGRANGE(leaf1, entry1, sizeof(*entry1)));
+ if (args->rmtblkno) {
+ ASSERT((entry1->flags & XFS_ATTR_LOCAL) == 0);
+ name_rmt = XFS_ATTR_LEAF_NAME_REMOTE(leaf1, args->index);
+ INT_SET(name_rmt->valueblk, ARCH_CONVERT, args->rmtblkno);
+ INT_SET(name_rmt->valuelen, ARCH_CONVERT, args->valuelen);
+ xfs_da_log_buf(args->trans, bp1,
+ XFS_DA_LOGRANGE(leaf1, name_rmt, sizeof(*name_rmt)));
+ }
+
+ entry2->flags |= XFS_ATTR_INCOMPLETE;
+ xfs_da_log_buf(args->trans, bp2,
+ XFS_DA_LOGRANGE(leaf2, entry2, sizeof(*entry2)));
+ if ((entry2->flags & XFS_ATTR_LOCAL) == 0) {
+ name_rmt = XFS_ATTR_LEAF_NAME_REMOTE(leaf2, args->index2);
+ name_rmt->valueblk = 0;
+ name_rmt->valuelen = 0;
+ xfs_da_log_buf(args->trans, bp2,
+ XFS_DA_LOGRANGE(leaf2, name_rmt, sizeof(*name_rmt)));
+ }
+ xfs_da_buf_done(bp1);
+ if (bp1 != bp2)
+ xfs_da_buf_done(bp2);
+
+ /*
+ * Commit the flag value change and start the next trans in series.
+ */
+ error = xfs_attr_rolltrans(&args->trans, args->dp);
+
+ return(error);
+}
+
+#if 0
+/*
+ * Look at all the extents for this logical region,
+ * invalidate any buffers that are incore/in transactions.
+ */
+STATIC int
+xfs_attr_leaf_freextent(xfs_trans_t **trans, xfs_inode_t *dp,
+ xfs_dablk_t blkno, int blkcnt)
+{
+ xfs_bmbt_irec_t map;
+ xfs_dablk_t tblkno;
+ int tblkcnt, dblkcnt, nmap, error;
+ xfs_daddr_t dblkno;
+ xfs_buf_t *bp;
+
+ /*
+ * Roll through the "value", invalidating the attribute value's
+ * blocks.
+ */
+ tblkno = blkno;
+ tblkcnt = blkcnt;
+ while (tblkcnt > 0) {
+ /*
+ * Try to remember where we decided to put the value.
+ */
+ nmap = 1;
+ error = xfs_bmapi(*trans, dp, (xfs_fileoff_t)tblkno, tblkcnt,
+ XFS_BMAPI_ATTRFORK | XFS_BMAPI_METADATA,
+ NULL, 0, &map, &nmap, NULL);
+ if (error) {
+ return(error);
+ }
+ ASSERT(nmap == 1);
+ ASSERT(map.br_startblock != DELAYSTARTBLOCK);
+
+ /*
+ * If it's a hole, these are already unmapped
+ * so there's nothing to invalidate.
+ */
+ if (map.br_startblock != HOLESTARTBLOCK) {
+
+ dblkno = XFS_FSB_TO_DADDR(dp->i_mount,
+ map.br_startblock);
+ dblkcnt = XFS_FSB_TO_BB(dp->i_mount,
+ map.br_blockcount);
+ bp = xfs_trans_get_buf(*trans,
+ dp->i_mount->m_ddev_targp,
+ dblkno, dblkcnt, XFS_BUF_LOCK);
+ xfs_trans_binval(*trans, bp);
+ /*
+ * Roll to next transaction.
+ */
+ if ((error = xfs_attr_rolltrans(trans, dp)))
+ return (error);
+ }
+
+ tblkno += map.br_blockcount;
+ tblkcnt -= map.br_blockcount;
+ }
+
+ return(0);
+}
+#endif
+
+
+/*
+ * Roll from one trans in the sequence of PERMANENT transactions to the next.
+ */
+int
+xfs_attr_rolltrans(xfs_trans_t **transp, xfs_inode_t *dp)
+{
+ xfs_trans_t *trans;
+ unsigned int logres, count;
+ int error;
+
+ /*
+ * Ensure that the inode is always logged.
+ */
+ trans = *transp;
+ xfs_trans_log_inode(trans, dp, XFS_ILOG_CORE);
+
+ /*
+ * Copy the critical parameters from one trans to the next.
+ */
+#ifdef __KERNEL__
+ logres = trans->t_log_res;
+ count = trans->t_log_count;
+#else
+ logres = count = 0;
+#endif
+ *transp = xfs_trans_dup(trans);
+
+ /*
+ * Commit the current transaction.
+ * If this commit failed, then it'd just unlock those items that
+ * are not marked ihold. That also means that a filesystem shutdown
+ * is in progress. The caller takes the responsibility to cancel
+ * the duplicate transaction that gets returned.
+ */
+ if ((error = xfs_trans_commit(trans, 0, NULL)))
+ return (error);
+
+ trans = *transp;
+
+ /*
+ * Reserve space in the log for th next transaction.
+ * This also pushes items in the "AIL", the list of logged items,
+ * out to disk if they are taking up space at the tail of the log
+ * that we want to use. This requires that either nothing be locked
+ * across this call, or that anything that is locked be logged in
+ * the prior and the next transactions.
+ */
+ error = xfs_trans_reserve(trans, 0, logres, 0,
+ XFS_TRANS_PERM_LOG_RES, count);
+ /*
+ * Ensure that the inode is in the new transaction and locked.
+ */
+ if (!error) {
+ xfs_trans_ijoin(trans, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(trans, dp);
+ }
+ return (error);
+
+}
/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
#include <xfs.h>
+extern xfs_zone_t *xfs_ifork_zone;
xfs_zone_t *xfs_bmap_free_item_zone;
+STATIC int /* error */
+xfs_bmap_add_attrfork_btree(
+ xfs_trans_t *tp, /* transaction pointer */
+ xfs_inode_t *ip, /* incore inode pointer */
+ xfs_fsblock_t *firstblock, /* first block allocated */
+ xfs_bmap_free_t *flist, /* blocks to free at commit */
+ int *flags) /* inode logging flags */
+{
+ xfs_btree_cur_t *cur; /* btree cursor */
+ int error; /* error return value */
+ xfs_mount_t *mp; /* file system mount struct */
+ int stat; /* newroot status */
+
+ mp = ip->i_mount;
+ if (ip->i_df.if_broot_bytes <= XFS_IFORK_DSIZE(ip))
+ *flags |= XFS_ILOG_DBROOT;
+ else {
+ cur = xfs_btree_init_cursor(mp, tp, NULL, 0, XFS_BTNUM_BMAP, ip,
+ XFS_DATA_FORK);
+ cur->bc_private.b.flist = flist;
+ cur->bc_private.b.firstblock = *firstblock;
+ if ((error = xfs_bmbt_lookup_ge(cur, 0, 0, 0, &stat)))
+ goto error0;
+ ASSERT(stat == 1); /* must be at least one entry */
+ if ((error = xfs_bmbt_newroot(cur, flags, &stat)))
+ goto error0;
+ if (stat == 0) {
+ xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
+ return XFS_ERROR(ENOSPC);
+ }
+ *firstblock = cur->bc_private.b.firstblock;
+ cur->bc_private.b.allocated = 0;
+ xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
+ }
+ return 0;
+error0:
+ xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
+ return error;
+}
+
+/*
+ * Called from xfs_bmap_add_attrfork to handle extents format files.
+ */
+STATIC int /* error */
+xfs_bmap_add_attrfork_extents(
+ xfs_trans_t *tp, /* transaction pointer */
+ xfs_inode_t *ip, /* incore inode pointer */
+ xfs_fsblock_t *firstblock, /* first block allocated */
+ xfs_bmap_free_t *flist, /* blocks to free at commit */
+ int *flags) /* inode logging flags */
+{
+ xfs_btree_cur_t *cur; /* bmap btree cursor */
+ int error; /* error return value */
+
+ if (ip->i_d.di_nextents * sizeof(xfs_bmbt_rec_t) <= XFS_IFORK_DSIZE(ip))
+ return 0;
+ cur = NULL;
+ error = xfs_bmap_extents_to_btree(tp, ip, firstblock, flist, &cur, 0,
+ flags, XFS_DATA_FORK);
+ if (cur) {
+ cur->bc_private.b.allocated = 0;
+ xfs_btree_del_cursor(cur,
+ error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR);
+ }
+ return error;
+}
+
+/*
+ * Called from xfs_bmap_add_attrfork to handle local format files.
+ */
+STATIC int /* error */
+xfs_bmap_add_attrfork_local(
+ xfs_trans_t *tp, /* transaction pointer */
+ xfs_inode_t *ip, /* incore inode pointer */
+ xfs_fsblock_t *firstblock, /* first block allocated */
+ xfs_bmap_free_t *flist, /* blocks to free at commit */
+ int *flags) /* inode logging flags */
+{
+ xfs_da_args_t dargs; /* args for dir/attr code */
+ int error; /* error return value */
+ xfs_mount_t *mp; /* mount structure pointer */
+
+ if (ip->i_df.if_bytes <= XFS_IFORK_DSIZE(ip))
+ return 0;
+ if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) {
+ mp = ip->i_mount;
+ memset(&dargs, 0, sizeof(dargs));
+ dargs.dp = ip;
+ dargs.firstblock = firstblock;
+ dargs.flist = flist;
+ dargs.total = mp->m_dirblkfsbs;
+ dargs.whichfork = XFS_DATA_FORK;
+ dargs.trans = tp;
+ error = XFS_DIR_SHORTFORM_TO_SINGLE(mp, &dargs);
+ } else
+ error = xfs_bmap_local_to_extents(tp, ip, firstblock, 1, flags,
+ XFS_DATA_FORK);
+ return error;
+}
+
/*
* Called by xfs_bmapi to update extent list structure and the btree
* after allocating space (or doing a delayed allocation).
return rval;
}
+/*
+ * Convert inode from non-attributed to attributed.
+ * Must not be in a transaction, ip must not be locked.
+ */
+int /* error code */
+xfs_bmap_add_attrfork(
+ xfs_inode_t *ip, /* incore inode pointer */
+ int rsvd) /* OK to allocated reserved blocks in trans */
+{
+ int blks; /* space reservation */
+ int committed; /* xaction was committed */
+ int error; /* error return value */
+ xfs_fsblock_t firstblock; /* 1st block/ag allocated */
+ xfs_bmap_free_t flist; /* freed extent list */
+ int logflags; /* logging flags */
+ xfs_mount_t *mp; /* mount structure */
+ unsigned long s; /* spinlock spl value */
+ xfs_trans_t *tp; /* transaction pointer */
+
+ ASSERT(ip->i_df.if_ext_max ==
+ XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
+ if (XFS_IFORK_Q(ip))
+ return 0;
+ mp = ip->i_mount;
+ ASSERT(!XFS_NOT_DQATTACHED(mp, ip));
+ tp = xfs_trans_alloc(mp, XFS_TRANS_ADDAFORK);
+ blks = XFS_ADDAFORK_SPACE_RES(mp);
+ if (rsvd)
+ tp->t_flags |= XFS_TRANS_RESERVE;
+ if ((error = xfs_trans_reserve(tp, blks, XFS_ADDAFORK_LOG_RES(mp), 0,
+ XFS_TRANS_PERM_LOG_RES, XFS_ADDAFORK_LOG_COUNT)))
+ goto error0;
+ xfs_ilock(ip, XFS_ILOCK_EXCL);
+ error = XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, tp, ip, blks, 0, rsvd ?
+ XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_FORCE_RES :
+ XFS_QMOPT_RES_REGBLKS);
+ if (error) {
+ xfs_iunlock(ip, XFS_ILOCK_EXCL);
+ xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES);
+ return error;
+ }
+ if (XFS_IFORK_Q(ip))
+ goto error1;
+ if (ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS) {
+ /*
+ * For inodes coming from pre-6.2 filesystems.
+ */
+ ASSERT(ip->i_d.di_aformat == 0);
+ ip->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS;
+ }
+ ASSERT(ip->i_d.di_anextents == 0);
+ VN_HOLD(XFS_ITOV(ip));
+ xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
+ xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+ switch (ip->i_d.di_format) {
+ case XFS_DINODE_FMT_DEV:
+ ip->i_d.di_forkoff = roundup(sizeof(xfs_dev_t), 8) >> 3;
+ break;
+ case XFS_DINODE_FMT_UUID:
+ ip->i_d.di_forkoff = roundup(sizeof(uuid_t), 8) >> 3;
+ break;
+ case XFS_DINODE_FMT_LOCAL:
+ case XFS_DINODE_FMT_EXTENTS:
+ case XFS_DINODE_FMT_BTREE:
+ ip->i_d.di_forkoff = mp->m_attroffset >> 3;
+ break;
+ default:
+ ASSERT(0);
+ error = XFS_ERROR(EINVAL);
+ goto error1;
+ }
+ ip->i_df.if_ext_max =
+ XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
+ ASSERT(ip->i_afp == NULL);
+ ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP);
+ ip->i_afp->if_ext_max =
+ XFS_IFORK_ASIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
+ ip->i_afp->if_flags = XFS_IFEXTENTS;
+ logflags = 0;
+ XFS_BMAP_INIT(&flist, &firstblock);
+ switch (ip->i_d.di_format) {
+ case XFS_DINODE_FMT_LOCAL:
+ error = xfs_bmap_add_attrfork_local(tp, ip, &firstblock, &flist,
+ &logflags);
+ break;
+ case XFS_DINODE_FMT_EXTENTS:
+ error = xfs_bmap_add_attrfork_extents(tp, ip, &firstblock,
+ &flist, &logflags);
+ break;
+ case XFS_DINODE_FMT_BTREE:
+ error = xfs_bmap_add_attrfork_btree(tp, ip, &firstblock, &flist,
+ &logflags);
+ break;
+ default:
+ error = 0;
+ break;
+ }
+ if (logflags)
+ xfs_trans_log_inode(tp, ip, logflags);
+ if (error)
+ goto error2;
+ if (!XFS_SB_VERSION_HASATTR(&mp->m_sb)) {
+ s = XFS_SB_LOCK(mp);
+ if (!XFS_SB_VERSION_HASATTR(&mp->m_sb)) {
+ XFS_SB_VERSION_ADDATTR(&mp->m_sb);
+ XFS_SB_UNLOCK(mp, s);
+ xfs_mod_sb(tp, XFS_SB_VERSIONNUM);
+ } else
+ XFS_SB_UNLOCK(mp, s);
+ }
+ if ((error = xfs_bmap_finish(&tp, &flist, firstblock, &committed)))
+ goto error2;
+ error = xfs_trans_commit(tp, XFS_TRANS_PERM_LOG_RES, NULL);
+ ASSERT(ip->i_df.if_ext_max ==
+ XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
+ return error;
+error2:
+ xfs_bmap_cancel(&flist);
+error1:
+ ASSERT(ismrlocked(&ip->i_lock,MR_UPDATE));
+ xfs_iunlock(ip, XFS_ILOCK_EXCL);
+error0:
+ xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT);
+ ASSERT(ip->i_df.if_ext_max ==
+ XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
+ return error;
+}
+
/*
* Add the extent to the list of extents to be free at transaction end.
* The list is maintained sorted (by block number).
mp->m_bm_maxlevels[whichfork] = level;
}
+/*
+ * Free up any items left in the list.
+ */
+void
+xfs_bmap_cancel(
+ xfs_bmap_free_t *flist) /* list of bmap_free_items */
+{
+ xfs_bmap_free_item_t *free; /* free list item */
+ xfs_bmap_free_item_t *next;
+
+ if (flist->xbf_count == 0)
+ return;
+ ASSERT(flist->xbf_first != NULL);
+ for (free = flist->xbf_first; free; free = next) {
+ next = free->xbfi_next;
+ xfs_bmap_del_free(flist, NULL, free);
+ }
+ ASSERT(flist->xbf_count == 0);
+}
+
/*
* Returns the file-relative block number of the first unused block(s)
* in the file with at least "len" logically contiguous blocks free.
XFS_SBS_FREXTENTS,
-(ralen), rsvd)) {
if (XFS_IS_QUOTA_ON(ip->i_mount))
- XFS_TRANS_UNRESERVE_BLKQUOTA(
+ (void)XFS_TRANS_UNRESERVE_BLKQUOTA(
mp, NULL, ip,
(long)alen);
break;
XFS_SBS_FDBLOCKS,
-(alen), rsvd)) {
if (XFS_IS_QUOTA_ON(ip->i_mount))
- XFS_TRANS_UNRESERVE_BLKQUOTA(
+ (void)XFS_TRANS_UNRESERVE_BLKQUOTA(
mp, NULL, ip,
(long)alen);
break;
if (xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS,
-(indlen), rsvd)) {
- XFS_TRANS_UNRESERVE_BLKQUOTA(
+ (void)XFS_TRANS_UNRESERVE_BLKQUOTA(
mp, NULL, ip, (long)alen);
break;
}
xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS,
(int)del.br_blockcount, rsvd);
/* Unreserve our quota space */
- XFS_TRANS_RESERVE_QUOTA_NBLKS(
+ (void)XFS_TRANS_RESERVE_QUOTA_NBLKS(
mp, NULL, ip, -((long)del.br_blockcount), 0,
isrt ? XFS_QMOPT_RES_RTBLKS :
XFS_QMOPT_RES_REGBLKS);
/*
- * Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
*/
switch (oldblk->magic) {
case XFS_ATTR_LEAF_MAGIC:
-#ifndef __KERNEL__
- return(ENOTTY);
-#else
error = xfs_attr_leaf_split(state, oldblk, newblk);
if ((error != 0) && (error != ENOSPC)) {
return(error); /* GROT: attr is inconsistent */
return(error); /* GROT: attr inconsistent */
addblk = newblk;
break;
-#endif
case XFS_DIR_LEAF_MAGIC:
ASSERT(XFS_DIR_IS_V1(state->mp));
error = xfs_dir_leaf_split(state, oldblk, newblk);
*/
switch (drop_blk->magic) {
case XFS_ATTR_LEAF_MAGIC:
-#ifndef __KERNEL__
- error = ENOTTY;
-#else
error = xfs_attr_leaf_toosmall(state, &action);
-#endif
if (error)
return(error);
if (action == 0)
return(0);
-#ifdef __KERNEL__
xfs_attr_leaf_unbalance(state, drop_blk, save_blk);
-#endif
break;
case XFS_DIR_LEAF_MAGIC:
ASSERT(XFS_DIR_IS_V1(state->mp));
level = path->active-1;
blk = &path->blk[ level ];
switch (blk->magic) {
-#ifdef __KERNEL__
case XFS_ATTR_LEAF_MAGIC:
lasthash = xfs_attr_leaf_lasthash(blk->bp, &count);
if (count == 0)
return;
break;
-#endif
case XFS_DIR_LEAF_MAGIC:
ASSERT(XFS_DIR_IS_V1(state->mp));
lasthash = xfs_dir_leaf_lasthash(blk->bp, &count);
blkno = INT_GET(btree->before, ARCH_CONVERT);
}
}
-#ifdef __KERNEL__
else if (INT_GET(curr->magic, ARCH_CONVERT) == XFS_ATTR_LEAF_MAGIC) {
blk->hashval = xfs_attr_leaf_lasthash(blk->bp, NULL);
break;
}
-#endif
else if (INT_GET(curr->magic, ARCH_CONVERT) == XFS_DIR_LEAF_MAGIC) {
blk->hashval = xfs_dir_leaf_lasthash(blk->bp, NULL);
break;
retval = xfs_dir2_leafn_lookup_int(blk->bp, args,
&blk->index, state);
}
-#ifdef __KERNEL__
else if (blk->magic == XFS_ATTR_LEAF_MAGIC) {
retval = xfs_attr_leaf_lookup_int(blk->bp, args);
blk->index = args->index;
args->blkno = blk->blkno;
}
-#endif
if (((retval == ENOENT) || (retval == ENOATTR)) &&
(blk->hashval == args->hashval)) {
error = xfs_da_path_shift(state, &state->path, 1, 1,
if (retval == 0) {
continue;
}
-#ifdef __KERNEL__
else if (blk->magic == XFS_ATTR_LEAF_MAGIC) {
/* path_shift() gives ENOENT */
retval = XFS_ERROR(ENOATTR);
}
-#endif
}
break;
}
ASSERT(old_blk->magic == new_blk->magic);
switch (old_blk->magic) {
-#ifdef __KERNEL__
case XFS_ATTR_LEAF_MAGIC:
before = xfs_attr_leaf_order(old_blk->bp, new_blk->bp);
break;
-#endif
case XFS_DIR_LEAF_MAGIC:
ASSERT(XFS_DIR_IS_V1(state->mp));
before = xfs_dir_leaf_order(old_blk->bp, new_blk->bp);
ASSERT(level == path->active-1);
blk->index = 0;
switch(blk->magic) {
-#ifdef __KERNEL__
case XFS_ATTR_LEAF_MAGIC:
blk->hashval = xfs_attr_leaf_lasthash(blk->bp,
NULL);
break;
-#endif
case XFS_DIR_LEAF_MAGIC:
ASSERT(XFS_DIR_IS_V1(state->mp));
blk->hashval = xfs_dir_leaf_lasthash(blk->bp,
error = bp ? XFS_BUF_GETERROR(bp) : XFS_ERROR(EIO);
break;
case 1:
-#ifndef __KERNEL__
case 2:
-#endif
bp = NULL;
error = xfs_trans_read_buf(mp, trans, mp->m_ddev_targp,
mappedbno, nmapped, 0, &bp);
break;
-#ifdef __KERNEL__
case 3:
xfs_baread(mp->m_ddev_targp, mappedbno, nmapped);
error = 0;
bp = NULL;
break;
-#endif
}
if (error) {
if (bp)
if (bplist != &bp)
kmem_free(bplist, nbuf * sizeof(*bplist));
}
+
+/*
+ * Get the first daddr from a dabuf.
+ */
+xfs_daddr_t
+xfs_da_blkno(xfs_dabuf_t *dabuf)
+{
+ ASSERT(dabuf->nbuf);
+ ASSERT(dabuf->data);
+ return XFS_BUF_ADDR(dabuf->bps[0]);
+}
projects / thirdparty / xfsprogs-dev.git / commitdiff
