#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
-#include "xfs_dir.h"
#include "xfs_dir2.h"
#include "xfs_dmapi.h"
#include "xfs_mount.h"
#include "xfs_da_btree.h"
#include "xfs_bmap_btree.h"
#include "xfs_alloc_btree.h"
-#include "xfs_dir_sf.h"
#include "xfs_dir2_sf.h"
#include "xfs_attr_sf.h"
#include "xfs_dinode.h"
#include "xfs_inode.h"
#include "xfs_inode_item.h"
#include "xfs_bmap.h"
-#include "xfs_dir_leaf.h"
#include "xfs_dir2_data.h"
#include "xfs_dir2_leaf.h"
#include "xfs_dir2_block.h"
#include "xfs_dir2_node.h"
-#include "xfs_dir2_trace.h"
#include "xfs_error.h"
+#include "xfs_vnodeops.h"
+#include "xfs_trace.h"
-/*
- * Declarations for interface routines.
- */
-static void xfs_dir2_mount(xfs_mount_t *mp);
-static int xfs_dir2_isempty(xfs_inode_t *dp);
-static int xfs_dir2_init(xfs_trans_t *tp, xfs_inode_t *dp,
- xfs_inode_t *pdp);
-static int xfs_dir2_createname(xfs_trans_t *tp, xfs_inode_t *dp,
- char *name, int namelen, xfs_ino_t inum,
- xfs_fsblock_t *first,
- xfs_bmap_free_t *flist, xfs_extlen_t total);
-static int xfs_dir2_lookup(xfs_trans_t *tp, xfs_inode_t *dp, char *name,
- int namelen, xfs_ino_t *inum);
-static int xfs_dir2_removename(xfs_trans_t *tp, xfs_inode_t *dp,
- char *name, int namelen, xfs_ino_t ino,
- xfs_fsblock_t *first,
- xfs_bmap_free_t *flist, xfs_extlen_t total);
-static int xfs_dir2_getdents(xfs_trans_t *tp, xfs_inode_t *dp, uio_t *uio,
- int *eofp);
-static int xfs_dir2_replace(xfs_trans_t *tp, xfs_inode_t *dp, char *name,
- int namelen, xfs_ino_t inum,
- xfs_fsblock_t *first, xfs_bmap_free_t *flist,
- xfs_extlen_t total);
-static int xfs_dir2_canenter(xfs_trans_t *tp, xfs_inode_t *dp, char *name,
- int namelen);
-static int xfs_dir2_shortform_validate_ondisk(xfs_mount_t *mp,
- xfs_dinode_t *dip);
+struct xfs_name xfs_name_dotdot = {"..", 2};
/*
- * Utility routine declarations.
+ * ASCII case-insensitive (ie. A-Z) support for directories that was
+ * used in IRIX.
*/
-static int xfs_dir2_put_dirent64_direct(xfs_dir2_put_args_t *pa);
-static int xfs_dir2_put_dirent64_uio(xfs_dir2_put_args_t *pa);
+STATIC xfs_dahash_t
+xfs_ascii_ci_hashname(
+ struct xfs_name *name)
+{
+ xfs_dahash_t hash;
+ int i;
-/*
- * Directory operations vector.
- */
-xfs_dirops_t xfsv2_dirops = {
- .xd_mount = xfs_dir2_mount,
- .xd_isempty = xfs_dir2_isempty,
- .xd_init = xfs_dir2_init,
- .xd_createname = xfs_dir2_createname,
- .xd_lookup = xfs_dir2_lookup,
- .xd_removename = xfs_dir2_removename,
- .xd_getdents = xfs_dir2_getdents,
- .xd_replace = xfs_dir2_replace,
- .xd_canenter = xfs_dir2_canenter,
- .xd_shortform_validate_ondisk = xfs_dir2_shortform_validate_ondisk,
- .xd_shortform_to_single = xfs_dir2_sf_to_block,
-};
+ for (i = 0, hash = 0; i < name->len; i++)
+ hash = tolower(name->name[i]) ^ rol32(hash, 7);
-/*
- * Interface routines.
- */
+ return hash;
+}
-/*
- * Initialize directory-related fields in the mount structure.
- */
-static void
-xfs_dir2_mount(
- xfs_mount_t *mp) /* filesystem mount point */
+STATIC enum xfs_dacmp
+xfs_ascii_ci_compname(
+ struct xfs_da_args *args,
+ const char *name,
+ int len)
+{
+ enum xfs_dacmp result;
+ int i;
+
+ if (args->namelen != len)
+ return XFS_CMP_DIFFERENT;
+
+ result = XFS_CMP_EXACT;
+ for (i = 0; i < len; i++) {
+ if (args->name[i] == name[i])
+ continue;
+ if (tolower(args->name[i]) != tolower(name[i]))
+ return XFS_CMP_DIFFERENT;
+ result = XFS_CMP_CASE;
+ }
+
+ return result;
+}
+
+static struct xfs_nameops xfs_ascii_ci_nameops = {
+ .hashname = xfs_ascii_ci_hashname,
+ .compname = xfs_ascii_ci_compname,
+};
+
+void
+xfs_dir_mount(
+ xfs_mount_t *mp)
{
- mp->m_dirversion = 2;
+ ASSERT(xfs_sb_version_hasdirv2(&mp->m_sb));
ASSERT((1 << (mp->m_sb.sb_blocklog + mp->m_sb.sb_dirblklog)) <=
XFS_MAX_BLOCKSIZE);
mp->m_dirblksize = 1 << (mp->m_sb.sb_blocklog + mp->m_sb.sb_dirblklog);
mp->m_dirblkfsbs = 1 << mp->m_sb.sb_dirblklog;
- mp->m_dirdatablk = XFS_DIR2_DB_TO_DA(mp, XFS_DIR2_DATA_FIRSTDB(mp));
- mp->m_dirleafblk = XFS_DIR2_DB_TO_DA(mp, XFS_DIR2_LEAF_FIRSTDB(mp));
- mp->m_dirfreeblk = XFS_DIR2_DB_TO_DA(mp, XFS_DIR2_FREE_FIRSTDB(mp));
+ mp->m_dirdatablk = xfs_dir2_db_to_da(mp, XFS_DIR2_DATA_FIRSTDB(mp));
+ mp->m_dirleafblk = xfs_dir2_db_to_da(mp, XFS_DIR2_LEAF_FIRSTDB(mp));
+ mp->m_dirfreeblk = xfs_dir2_db_to_da(mp, XFS_DIR2_FREE_FIRSTDB(mp));
mp->m_attr_node_ents =
(mp->m_sb.sb_blocksize - (uint)sizeof(xfs_da_node_hdr_t)) /
(uint)sizeof(xfs_da_node_entry_t);
(mp->m_dirblksize - (uint)sizeof(xfs_da_node_hdr_t)) /
(uint)sizeof(xfs_da_node_entry_t);
mp->m_dir_magicpct = (mp->m_dirblksize * 37) / 100;
+ if (xfs_sb_version_hasasciici(&mp->m_sb))
+ mp->m_dirnameops = &xfs_ascii_ci_nameops;
+ else
+ mp->m_dirnameops = &xfs_default_nameops;
}
/*
* Return 1 if directory contains only "." and "..".
*/
-static int /* return code */
-xfs_dir2_isempty(
- xfs_inode_t *dp) /* incore inode structure */
+int
+xfs_dir_isempty(
+ xfs_inode_t *dp)
{
- xfs_dir2_sf_t *sfp; /* shortform directory structure */
+ xfs_dir2_sf_t *sfp;
ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
- /*
- * Might happen during shutdown.
- */
- if (dp->i_d.di_size == 0) {
+ if (dp->i_d.di_size == 0) /* might happen during shutdown. */
return 1;
- }
if (dp->i_d.di_size > XFS_IFORK_DSIZE(dp))
return 0;
sfp = (xfs_dir2_sf_t *)dp->i_df.if_u1.if_data;
}
/*
+ * Validate a given inode number.
+ */
+int
+xfs_dir_ino_validate(
+ xfs_mount_t *mp,
+ xfs_ino_t ino)
+{
+ xfs_agblock_t agblkno;
+ xfs_agino_t agino;
+ xfs_agnumber_t agno;
+ int ino_ok;
+ int ioff;
+
+ agno = XFS_INO_TO_AGNO(mp, ino);
+ agblkno = XFS_INO_TO_AGBNO(mp, ino);
+ ioff = XFS_INO_TO_OFFSET(mp, ino);
+ agino = XFS_OFFBNO_TO_AGINO(mp, agblkno, ioff);
+ ino_ok =
+ agno < mp->m_sb.sb_agcount &&
+ agblkno < mp->m_sb.sb_agblocks &&
+ agblkno != 0 &&
+ ioff < (1 << mp->m_sb.sb_inopblog) &&
+ XFS_AGINO_TO_INO(mp, agno, agino) == ino;
+ if (unlikely(XFS_TEST_ERROR(!ino_ok, mp, XFS_ERRTAG_DIR_INO_VALIDATE,
+ XFS_RANDOM_DIR_INO_VALIDATE))) {
+ xfs_fs_cmn_err(CE_WARN, mp, "Invalid inode number 0x%Lx",
+ (unsigned long long) ino);
+ XFS_ERROR_REPORT("xfs_dir_ino_validate", XFS_ERRLEVEL_LOW, mp);
+ return XFS_ERROR(EFSCORRUPTED);
+ }
+ return 0;
+}
+
+/*
* Initialize a directory with its "." and ".." entries.
*/
-static int /* error */
-xfs_dir2_init(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- xfs_inode_t *pdp) /* incore parent directory inode */
+int
+xfs_dir_init(
+ xfs_trans_t *tp,
+ xfs_inode_t *dp,
+ xfs_inode_t *pdp)
{
- xfs_da_args_t args; /* operation arguments */
- int error; /* error return value */
+ xfs_da_args_t args;
+ int error;
memset((char *)&args, 0, sizeof(args));
args.dp = dp;
args.trans = tp;
ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
- if ((error = xfs_dir_ino_validate(tp->t_mountp, pdp->i_ino))) {
+ if ((error = xfs_dir_ino_validate(tp->t_mountp, pdp->i_ino)))
return error;
- }
return xfs_dir2_sf_create(&args, pdp->i_ino);
}
/*
Enter a name in a directory.
*/
-static int /* error */
-xfs_dir2_createname(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- char *name, /* new entry name */
- int namelen, /* new entry name length */
+int
+xfs_dir_createname(
+ xfs_trans_t *tp,
+ xfs_inode_t *dp,
+ struct xfs_name *name,
xfs_ino_t inum, /* new entry inode number */
xfs_fsblock_t *first, /* bmap's firstblock */
xfs_bmap_free_t *flist, /* bmap's freeblock list */
xfs_extlen_t total) /* bmap's total block count */
{
- xfs_da_args_t args; /* operation arguments */
- int rval; /* return value */
+ xfs_da_args_t args;
+ int rval;
int v; /* type-checking value */
ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
- if ((rval = xfs_dir_ino_validate(tp->t_mountp, inum))) {
+ if ((rval = xfs_dir_ino_validate(tp->t_mountp, inum)))
return rval;
- }
XFS_STATS_INC(xs_dir_create);
- /*
- * Fill in the arg structure for this request.
- */
- args.name = name;
- args.namelen = namelen;
- args.hashval = xfs_da_hashname(name, namelen);
+
+ memset(&args, 0, sizeof(xfs_da_args_t));
+ args.name = name->name;
+ args.namelen = name->len;
+ args.hashval = dp->i_mount->m_dirnameops->hashname(name);
args.inumber = inum;
args.dp = dp;
args.firstblock = first;
args.total = total;
args.whichfork = XFS_DATA_FORK;
args.trans = tp;
- args.justcheck = 0;
- args.addname = args.oknoent = 1;
- /*
- * Decide on what work routines to call based on the inode size.
- */
+ args.op_flags = XFS_DA_OP_ADDNAME | XFS_DA_OP_OKNOENT;
+
if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
rval = xfs_dir2_sf_addname(&args);
- else if ((rval = xfs_dir2_isblock(tp, dp, &v))) {
+ else if ((rval = xfs_dir2_isblock(tp, dp, &v)))
return rval;
- } else if (v)
+ else if (v)
rval = xfs_dir2_block_addname(&args);
- else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) {
+ else if ((rval = xfs_dir2_isleaf(tp, dp, &v)))
return rval;
- } else if (v)
+ else if (v)
rval = xfs_dir2_leaf_addname(&args);
else
rval = xfs_dir2_node_addname(&args);
}
/*
+ * If doing a CI lookup and case-insensitive match, dup actual name into
+ * args.value. Return EEXIST for success (ie. name found) or an error.
+ */
+int
+xfs_dir_cilookup_result(
+ struct xfs_da_args *args,
+ const char *name,
+ int len)
+{
+ if (args->cmpresult == XFS_CMP_DIFFERENT)
+ return ENOENT;
+ if (args->cmpresult != XFS_CMP_CASE ||
+ !(args->op_flags & XFS_DA_OP_CILOOKUP))
+ return EEXIST;
+
+ args->value = kmem_alloc(len, KM_NOFS | KM_MAYFAIL);
+ if (!args->value)
+ return ENOMEM;
+
+ memcpy(args->value, name, len);
+ args->valuelen = len;
+ return EEXIST;
+}
+
+/*
* Lookup a name in a directory, give back the inode number.
+ * If ci_name is not NULL, returns the actual name in ci_name if it differs
+ * to name, or ci_name->name is set to NULL for an exact match.
*/
-static int /* error */
-xfs_dir2_lookup(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- char *name, /* lookup name */
- int namelen, /* lookup name length */
- xfs_ino_t *inum) /* out: inode number */
+
+int
+xfs_dir_lookup(
+ xfs_trans_t *tp,
+ xfs_inode_t *dp,
+ struct xfs_name *name,
+ xfs_ino_t *inum, /* out: inode number */
+ struct xfs_name *ci_name) /* out: actual name if CI match */
{
- xfs_da_args_t args; /* operation arguments */
- int rval; /* return value */
+ xfs_da_args_t args;
+ int rval;
int v; /* type-checking value */
ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
XFS_STATS_INC(xs_dir_lookup);
- /*
- * Fill in the arg structure for this request.
- */
- args.name = name;
- args.namelen = namelen;
- args.hashval = xfs_da_hashname(name, namelen);
- args.inumber = 0;
+ memset(&args, 0, sizeof(xfs_da_args_t));
+ args.name = name->name;
+ args.namelen = name->len;
+ args.hashval = dp->i_mount->m_dirnameops->hashname(name);
args.dp = dp;
- args.firstblock = NULL;
- args.flist = NULL;
- args.total = 0;
args.whichfork = XFS_DATA_FORK;
args.trans = tp;
- args.justcheck = args.addname = 0;
- args.oknoent = 1;
- /*
- * Decide on what work routines to call based on the inode size.
- */
+ args.op_flags = XFS_DA_OP_OKNOENT;
+ if (ci_name)
+ args.op_flags |= XFS_DA_OP_CILOOKUP;
+
if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
rval = xfs_dir2_sf_lookup(&args);
- else if ((rval = xfs_dir2_isblock(tp, dp, &v))) {
+ else if ((rval = xfs_dir2_isblock(tp, dp, &v)))
return rval;
- } else if (v)
+ else if (v)
rval = xfs_dir2_block_lookup(&args);
- else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) {
+ else if ((rval = xfs_dir2_isleaf(tp, dp, &v)))
return rval;
- } else if (v)
+ else if (v)
rval = xfs_dir2_leaf_lookup(&args);
else
rval = xfs_dir2_node_lookup(&args);
if (rval == EEXIST)
rval = 0;
- if (rval == 0)
+ if (!rval) {
*inum = args.inumber;
+ if (ci_name) {
+ ci_name->name = args.value;
+ ci_name->len = args.valuelen;
+ }
+ }
return rval;
}
/*
* Remove an entry from a directory.
*/
-static int /* error */
-xfs_dir2_removename(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- char *name, /* name of entry to remove */
- int namelen, /* name length of entry to remove */
- xfs_ino_t ino, /* inode number of entry to remove */
+int
+xfs_dir_removename(
+ xfs_trans_t *tp,
+ xfs_inode_t *dp,
+ struct xfs_name *name,
+ xfs_ino_t ino,
xfs_fsblock_t *first, /* bmap's firstblock */
xfs_bmap_free_t *flist, /* bmap's freeblock list */
xfs_extlen_t total) /* bmap's total block count */
{
- xfs_da_args_t args; /* operation arguments */
- int rval; /* return value */
+ xfs_da_args_t args;
+ int rval;
int v; /* type-checking value */
ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
XFS_STATS_INC(xs_dir_remove);
- /*
- * Fill in the arg structure for this request.
- */
- args.name = name;
- args.namelen = namelen;
- args.hashval = xfs_da_hashname(name, namelen);
+
+ memset(&args, 0, sizeof(xfs_da_args_t));
+ args.name = name->name;
+ args.namelen = name->len;
+ args.hashval = dp->i_mount->m_dirnameops->hashname(name);
args.inumber = ino;
args.dp = dp;
args.firstblock = first;
args.total = total;
args.whichfork = XFS_DATA_FORK;
args.trans = tp;
- args.justcheck = args.addname = args.oknoent = 0;
- /*
- * Decide on what work routines to call based on the inode size.
- */
+
if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
rval = xfs_dir2_sf_removename(&args);
- else if ((rval = xfs_dir2_isblock(tp, dp, &v))) {
+ else if ((rval = xfs_dir2_isblock(tp, dp, &v)))
return rval;
- } else if (v)
+ else if (v)
rval = xfs_dir2_block_removename(&args);
- else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) {
+ else if ((rval = xfs_dir2_isleaf(tp, dp, &v)))
return rval;
- } else if (v)
+ else if (v)
rval = xfs_dir2_leaf_removename(&args);
else
rval = xfs_dir2_node_removename(&args);
/*
* Read a directory.
*/
-static int /* error */
-xfs_dir2_getdents(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- uio_t *uio, /* caller's buffer control */
- int *eofp) /* out: eof reached */
+int
+xfs_readdir(
+ xfs_inode_t *dp,
+ void *dirent,
+ size_t bufsize,
+ xfs_off_t *offset,
+ filldir_t filldir)
{
- int alignment; /* alignment required for ABI */
- xfs_dirent_t *dbp; /* malloc'ed buffer */
- xfs_dir2_put_t put; /* entry formatting routine */
int rval; /* return value */
int v; /* type-checking value */
+ xfs_itrace_entry(dp);
+
+ if (XFS_FORCED_SHUTDOWN(dp->i_mount))
+ return XFS_ERROR(EIO);
+
ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
XFS_STATS_INC(xs_dir_getdents);
- /*
- * If our caller has given us a single contiguous aligned memory buffer,
- * just work directly within that buffer. If it's in user memory,
- * lock it down first.
- */
- alignment = sizeof(xfs_off_t) - 1;
- if ((uio->uio_iovcnt == 1) &&
- (((__psint_t)uio->uio_iov[0].iov_base & alignment) == 0) &&
- ((uio->uio_iov[0].iov_len & alignment) == 0)) {
- dbp = NULL;
- put = xfs_dir2_put_dirent64_direct;
- } else {
- dbp = kmem_alloc(sizeof(*dbp) + MAXNAMELEN, KM_SLEEP);
- put = xfs_dir2_put_dirent64_uio;
- }
- *eofp = 0;
- /*
- * Decide on what work routines to call based on the inode size.
- */
if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
- rval = xfs_dir2_sf_getdents(dp, uio, eofp, dbp, put);
- else if ((rval = xfs_dir2_isblock(tp, dp, &v))) {
+ rval = xfs_dir2_sf_getdents(dp, dirent, offset, filldir);
+ else if ((rval = xfs_dir2_isblock(NULL, dp, &v)))
;
- } else if (v)
- rval = xfs_dir2_block_getdents(tp, dp, uio, eofp, dbp, put);
+ else if (v)
+ rval = xfs_dir2_block_getdents(dp, dirent, offset, filldir);
else
- rval = xfs_dir2_leaf_getdents(tp, dp, uio, eofp, dbp, put);
- if (dbp != NULL)
- kmem_free(dbp, sizeof(*dbp) + MAXNAMELEN);
+ rval = xfs_dir2_leaf_getdents(dp, dirent, bufsize, offset,
+ filldir);
return rval;
}
/*
* Replace the inode number of a directory entry.
*/
-static int /* error */
-xfs_dir2_replace(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- char *name, /* name of entry to replace */
- int namelen, /* name length of entry to replace */
+int
+xfs_dir_replace(
+ xfs_trans_t *tp,
+ xfs_inode_t *dp,
+ struct xfs_name *name, /* name of entry to replace */
xfs_ino_t inum, /* new inode number */
xfs_fsblock_t *first, /* bmap's firstblock */
xfs_bmap_free_t *flist, /* bmap's freeblock list */
xfs_extlen_t total) /* bmap's total block count */
{
- xfs_da_args_t args; /* operation arguments */
- int rval; /* return value */
+ xfs_da_args_t args;
+ int rval;
int v; /* type-checking value */
ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
- if ((rval = xfs_dir_ino_validate(tp->t_mountp, inum))) {
+ if ((rval = xfs_dir_ino_validate(tp->t_mountp, inum)))
return rval;
- }
- /*
- * Fill in the arg structure for this request.
- */
- args.name = name;
- args.namelen = namelen;
- args.hashval = xfs_da_hashname(name, namelen);
+
+ memset(&args, 0, sizeof(xfs_da_args_t));
+ args.name = name->name;
+ args.namelen = name->len;
+ args.hashval = dp->i_mount->m_dirnameops->hashname(name);
args.inumber = inum;
args.dp = dp;
args.firstblock = first;
args.total = total;
args.whichfork = XFS_DATA_FORK;
args.trans = tp;
- args.justcheck = args.addname = args.oknoent = 0;
- /*
- * Decide on what work routines to call based on the inode size.
- */
+
if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
rval = xfs_dir2_sf_replace(&args);
- else if ((rval = xfs_dir2_isblock(tp, dp, &v))) {
+ else if ((rval = xfs_dir2_isblock(tp, dp, &v)))
return rval;
- } else if (v)
+ else if (v)
rval = xfs_dir2_block_replace(&args);
- else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) {
+ else if ((rval = xfs_dir2_isleaf(tp, dp, &v)))
return rval;
- } else if (v)
+ else if (v)
rval = xfs_dir2_leaf_replace(&args);
else
rval = xfs_dir2_node_replace(&args);
/*
* See if this entry can be added to the directory without allocating space.
+ * First checks that the caller couldn't reserve enough space (resblks = 0).
*/
-static int /* error */
-xfs_dir2_canenter(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- char *name, /* name of entry to add */
- int namelen) /* name length of entry to add */
+int
+xfs_dir_canenter(
+ xfs_trans_t *tp,
+ xfs_inode_t *dp,
+ struct xfs_name *name, /* name of entry to add */
+ uint resblks)
{
- xfs_da_args_t args; /* operation arguments */
- int rval; /* return value */
+ xfs_da_args_t args;
+ int rval;
int v; /* type-checking value */
+ if (resblks)
+ return 0;
+
ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
- /*
- * Fill in the arg structure for this request.
- */
- args.name = name;
- args.namelen = namelen;
- args.hashval = xfs_da_hashname(name, namelen);
- args.inumber = 0;
+
+ memset(&args, 0, sizeof(xfs_da_args_t));
+ args.name = name->name;
+ args.namelen = name->len;
+ args.hashval = dp->i_mount->m_dirnameops->hashname(name);
args.dp = dp;
- args.firstblock = NULL;
- args.flist = NULL;
- args.total = 0;
args.whichfork = XFS_DATA_FORK;
args.trans = tp;
- args.justcheck = args.addname = args.oknoent = 1;
- /*
- * Decide on what work routines to call based on the inode size.
- */
+ args.op_flags = XFS_DA_OP_JUSTCHECK | XFS_DA_OP_ADDNAME |
+ XFS_DA_OP_OKNOENT;
+
if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
rval = xfs_dir2_sf_addname(&args);
- else if ((rval = xfs_dir2_isblock(tp, dp, &v))) {
+ else if ((rval = xfs_dir2_isblock(tp, dp, &v)))
return rval;
- } else if (v)
+ else if (v)
rval = xfs_dir2_block_addname(&args);
- else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) {
+ else if ((rval = xfs_dir2_isleaf(tp, dp, &v)))
return rval;
- } else if (v)
+ else if (v)
rval = xfs_dir2_leaf_addname(&args);
else
rval = xfs_dir2_node_addname(&args);
}
/*
- * Dummy routine for shortform inode validation.
- * Can't really do this.
- */
-/* ARGSUSED */
-static int /* error */
-xfs_dir2_shortform_validate_ondisk(
- xfs_mount_t *mp, /* filesystem mount point */
- xfs_dinode_t *dip) /* ondisk inode */
-{
- return 0;
-}
-
-/*
* Utility routines.
*/
* This routine is for data and free blocks, not leaf/node blocks
* which are handled by xfs_da_grow_inode.
*/
-int /* error */
+int
xfs_dir2_grow_inode(
- xfs_da_args_t *args, /* operation arguments */
+ xfs_da_args_t *args,
int space, /* v2 dir's space XFS_DIR2_xxx_SPACE */
xfs_dir2_db_t *dbp) /* out: block number added */
{
xfs_fileoff_t bno; /* directory offset of new block */
int count; /* count of filesystem blocks */
xfs_inode_t *dp; /* incore directory inode */
- int error; /* error return value */
+ int error;
int got; /* blocks actually mapped */
- int i; /* temp mapping index */
+ int i;
xfs_bmbt_irec_t map; /* single structure for bmap */
int mapi; /* mapping index */
xfs_bmbt_irec_t *mapp; /* bmap mapping structure(s) */
- xfs_mount_t *mp; /* filesystem mount point */
+ xfs_mount_t *mp;
int nmap; /* number of bmap entries */
- xfs_trans_t *tp; /* transaction pointer */
+ xfs_trans_t *tp;
+ xfs_drfsbno_t nblks;
+
+ trace_xfs_dir2_grow_inode(args, space);
- xfs_dir2_trace_args_s("grow_inode", args, space);
dp = args->dp;
tp = args->trans;
mp = dp->i_mount;
+ nblks = dp->i_d.di_nblocks;
/*
* Set lowest possible block in the space requested.
*/
/*
* Find the first hole for our block.
*/
- if ((error = xfs_bmap_first_unused(tp, dp, count, &bno, XFS_DATA_FORK))) {
+ if ((error = xfs_bmap_first_unused(tp, dp, count, &bno, XFS_DATA_FORK)))
return error;
- }
nmap = 1;
ASSERT(args->firstblock != NULL);
/*
if ((error = xfs_bmapi(tp, dp, bno, count,
XFS_BMAPI_WRITE|XFS_BMAPI_METADATA|XFS_BMAPI_CONTIG,
args->firstblock, args->total, &map, &nmap,
- args->flist))) {
+ args->flist, NULL)))
return error;
- }
ASSERT(nmap <= 1);
- /*
- * Got it in 1.
- */
if (nmap == 1) {
mapp = ↦
mapi = 1;
if ((error = xfs_bmapi(tp, dp, b, c,
XFS_BMAPI_WRITE|XFS_BMAPI_METADATA,
args->firstblock, args->total,
- &mapp[mapi], &nmap, args->flist))) {
- kmem_free(mapp, sizeof(*mapp) * count);
+ &mapp[mapi], &nmap, args->flist,
+ NULL))) {
+ kmem_free(mapp);
return error;
}
if (nmap < 1)
mapp[mapi - 1].br_startoff + mapp[mapi - 1].br_blockcount !=
bno + count) {
if (mapp != &map)
- kmem_free(mapp, sizeof(*mapp) * count);
+ kmem_free(mapp);
return XFS_ERROR(ENOSPC);
}
/*
* Done with the temporary mapping table.
*/
if (mapp != &map)
- kmem_free(mapp, sizeof(*mapp) * count);
- *dbp = XFS_DIR2_DA_TO_DB(mp, (xfs_dablk_t)bno);
+ kmem_free(mapp);
+
+ /* account for newly allocated blocks in reserved blocks total */
+ args->total -= dp->i_d.di_nblocks - nblks;
+ *dbp = xfs_dir2_da_to_db(mp, (xfs_dablk_t)bno);
+
/*
* Update file's size if this is the data space and it grew.
*/
/*
* See if the directory is a single-block form directory.
*/
-int /* error */
+int
xfs_dir2_isblock(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
+ xfs_trans_t *tp,
+ xfs_inode_t *dp,
int *vp) /* out: 1 is block, 0 is not block */
{
xfs_fileoff_t last; /* last file offset */
- xfs_mount_t *mp; /* filesystem mount point */
- int rval; /* return value */
+ xfs_mount_t *mp;
+ int rval;
mp = dp->i_mount;
- if ((rval = xfs_bmap_last_offset(tp, dp, &last, XFS_DATA_FORK))) {
+ if ((rval = xfs_bmap_last_offset(tp, dp, &last, XFS_DATA_FORK)))
return rval;
- }
rval = XFS_FSB_TO_B(mp, last) == mp->m_dirblksize;
ASSERT(rval == 0 || dp->i_d.di_size == mp->m_dirblksize);
*vp = rval;
/*
* See if the directory is a single-leaf form directory.
*/
-int /* error */
+int
xfs_dir2_isleaf(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
+ xfs_trans_t *tp,
+ xfs_inode_t *dp,
int *vp) /* out: 1 is leaf, 0 is not leaf */
{
xfs_fileoff_t last; /* last file offset */
- xfs_mount_t *mp; /* filesystem mount point */
- int rval; /* return value */
+ xfs_mount_t *mp;
+ int rval;
mp = dp->i_mount;
- if ((rval = xfs_bmap_last_offset(tp, dp, &last, XFS_DATA_FORK))) {
+ if ((rval = xfs_bmap_last_offset(tp, dp, &last, XFS_DATA_FORK)))
return rval;
- }
*vp = last == mp->m_dirleafblk + (1 << mp->m_sb.sb_dirblklog);
return 0;
}
/*
- * Getdents put routine for 64-bit ABI, direct form.
- */
-static int /* error */
-xfs_dir2_put_dirent64_direct(
- xfs_dir2_put_args_t *pa) /* argument bundle */
-{
- xfs_dirent_t *idbp; /* dirent pointer */
- iovec_t *iovp; /* io vector */
- int namelen; /* entry name length */
- int reclen; /* entry total length */
- uio_t *uio; /* I/O control */
-
- namelen = pa->namelen;
- reclen = DIRENTSIZE(namelen);
- uio = pa->uio;
- /*
- * Won't fit in the remaining space.
- */
- if (reclen > uio->uio_resid) {
- pa->done = 0;
- return 0;
- }
- iovp = uio->uio_iov;
- idbp = (xfs_dirent_t *)iovp->iov_base;
- iovp->iov_base = (char *)idbp + reclen;
- iovp->iov_len -= reclen;
- uio->uio_resid -= reclen;
- idbp->d_reclen = reclen;
- idbp->d_ino = pa->ino;
- idbp->d_off = pa->cook;
- idbp->d_name[namelen] = '\0';
- pa->done = 1;
- memcpy(idbp->d_name, pa->name, namelen);
- return 0;
-}
-
-/*
- * Getdents put routine for 64-bit ABI, uio form.
- */
-static int /* error */
-xfs_dir2_put_dirent64_uio(
- xfs_dir2_put_args_t *pa) /* argument bundle */
-{
- xfs_dirent_t *idbp; /* dirent pointer */
- int namelen; /* entry name length */
- int reclen; /* entry total length */
- int rval; /* return value */
- uio_t *uio; /* I/O control */
-
- namelen = pa->namelen;
- reclen = DIRENTSIZE(namelen);
- uio = pa->uio;
- /*
- * Won't fit in the remaining space.
- */
- if (reclen > uio->uio_resid) {
- pa->done = 0;
- return 0;
- }
- idbp = pa->dbp;
- idbp->d_reclen = reclen;
- idbp->d_ino = pa->ino;
- idbp->d_off = pa->cook;
- idbp->d_name[namelen] = '\0';
- memcpy(idbp->d_name, pa->name, namelen);
- rval = uio_read((caddr_t)idbp, reclen, uio);
- pa->done = (rval == 0);
- return rval;
-}
-
-/*
* Remove the given block from the directory.
* This routine is used for data and free blocks, leaf/node are done
* by xfs_da_shrink_inode.
*/
int
xfs_dir2_shrink_inode(
- xfs_da_args_t *args, /* operation arguments */
- xfs_dir2_db_t db, /* directory block number */
- xfs_dabuf_t *bp) /* block's buffer */
+ xfs_da_args_t *args,
+ xfs_dir2_db_t db,
+ xfs_dabuf_t *bp)
{
xfs_fileoff_t bno; /* directory file offset */
xfs_dablk_t da; /* directory file offset */
int done; /* bunmap is finished */
- xfs_inode_t *dp; /* incore directory inode */
- int error; /* error return value */
- xfs_mount_t *mp; /* filesystem mount point */
- xfs_trans_t *tp; /* transaction pointer */
+ xfs_inode_t *dp;
+ int error;
+ xfs_mount_t *mp;
+ xfs_trans_t *tp;
+
+ trace_xfs_dir2_shrink_inode(args, db);
- xfs_dir2_trace_args_db("shrink_inode", args, db, bp);
dp = args->dp;
mp = dp->i_mount;
tp = args->trans;
- da = XFS_DIR2_DB_TO_DA(mp, db);
+ da = xfs_dir2_db_to_da(mp, db);
/*
* Unmap the fsblock(s).
*/
if ((error = xfs_bunmapi(tp, dp, da, mp->m_dirblkfsbs,
XFS_BMAPI_METADATA, 0, args->firstblock, args->flist,
- &done))) {
+ NULL, &done))) {
/*
* ENOSPC actually can happen if we're in a removename with
* no space reservation, and the resulting block removal
/*
* If the block isn't the last one in the directory, we're done.
*/
- if (dp->i_d.di_size > XFS_DIR2_DB_OFF_TO_BYTE(mp, db + 1, 0))
+ if (dp->i_d.di_size > xfs_dir2_db_off_to_byte(mp, db + 1, 0))
return 0;
bno = da;
if ((error = xfs_bmap_last_before(tp, dp, &bno, XFS_DATA_FORK))) {
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff