#include "xfs_dir2_node.h"
#include "xfs_dir2_trace.h"
#include "xfs_error.h"
+#include "xfs_vnodeops.h"
+struct xfs_name xfs_name_dotdot = {"..", 2};
+
+extern const struct xfs_nameops xfs_default_nameops;
+
+/*
+ * ASCII case-insensitive (ie. A-Z) support for directories that was
+ * used in IRIX.
+ */
+STATIC xfs_dahash_t
+xfs_ascii_ci_hashname(
+ struct xfs_name *name)
+{
+ xfs_dahash_t hash;
+ int i;
+
+ for (i = 0, hash = 0; i < name->len; i++)
+ hash = tolower(name->name[i]) ^ rol32(hash, 7);
+
+ return hash;
+}
+
+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)
{
- ASSERT(XFS_SB_VERSION_HASDIRV2(&mp->m_sb));
+ 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_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;
}
/*
xfs_dir_createname(
xfs_trans_t *tp,
xfs_inode_t *dp,
- char *name,
- int namelen,
+ 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 */
return rval;
XFS_STATS_INC(xs_dir_create);
- 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;
+ 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);
}
/*
+ * 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_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.
*/
+
int
xfs_dir_lookup(
xfs_trans_t *tp,
xfs_inode_t *dp,
- char *name,
- int namelen,
- xfs_ino_t *inum) /* out: inode number */
+ 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;
int rval;
ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
XFS_STATS_INC(xs_dir_lookup);
- 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;
+ 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);
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;
}
xfs_dir_removename(
xfs_trans_t *tp,
xfs_inode_t *dp,
- char *name,
- int namelen,
+ struct xfs_name *name,
xfs_ino_t ino,
xfs_fsblock_t *first, /* bmap's firstblock */
xfs_bmap_free_t *flist, /* bmap's freeblock list */
ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
XFS_STATS_INC(xs_dir_remove);
- 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;
if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
rval = xfs_dir2_sf_removename(&args);
int rval; /* return value */
int v; /* type-checking value */
- vn_trace_entry(dp, __FUNCTION__, (inst_t *)__return_address);
+ xfs_itrace_entry(dp);
if (XFS_FORCED_SHUTDOWN(dp->i_mount))
return XFS_ERROR(EIO);
xfs_dir_replace(
xfs_trans_t *tp,
xfs_inode_t *dp,
- char *name, /* name of entry to replace */
- int namelen,
+ 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 */
if ((rval = xfs_dir_ino_validate(tp->t_mountp, inum)))
return rval;
- 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;
if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
rval = xfs_dir2_sf_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).
*/
int
xfs_dir_canenter(
xfs_trans_t *tp,
xfs_inode_t *dp,
- char *name, /* name of entry to add */
- int namelen)
+ struct xfs_name *name, /* name of entry to add */
+ uint resblks)
{
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);
- 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;
+ 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);
xfs_mount_t *mp;
int nmap; /* number of bmap entries */
xfs_trans_t *tp;
+ xfs_drfsbno_t nblks;
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.
*/
args->firstblock, args->total,
&mapp[mapi], &nmap, args->flist,
NULL))) {
- kmem_free(mapp, sizeof(*mapp) * count);
+ 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);
+ 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.
*/
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff