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-rw-r--r--fs/ceph/caps.c43
-rw-r--r--fs/ceph/inode.c10
-rw-r--r--fs/ceph/mds_client.c10
-rw-r--r--fs/ceph/super.c2
-rw-r--r--fs/ceph/xattr.c3
-rw-r--r--fs/cifs/Makefile2
-rw-r--r--fs/cifs/README5
-rw-r--r--fs/cifs/cifsencrypt.c33
-rw-r--r--fs/cifs/cifsencrypt.h33
-rw-r--r--fs/cifs/cifsfs.c15
-rw-r--r--fs/cifs/cifsfs.h4
-rw-r--r--fs/cifs/cifsproto.h11
-rw-r--r--fs/cifs/connect.c11
-rw-r--r--fs/cifs/file.c202
-rw-r--r--fs/cifs/link.c58
-rw-r--r--fs/cifs/md4.c205
-rw-r--r--fs/cifs/md5.c366
-rw-r--r--fs/cifs/md5.h38
-rw-r--r--fs/cifs/smbdes.c1
-rw-r--r--fs/cifs/smbencrypt.c91
-rw-r--r--fs/ntfs/mft.c11
-rw-r--r--fs/xfs/linux-2.6/xfs_ioctl.c20
-rw-r--r--fs/xfs/quota/xfs_qm.c46
-rw-r--r--fs/xfs/xfs_alloc.h16
-rw-r--r--fs/xfs/xfs_bmap.c61
-rw-r--r--fs/xfs/xfs_buf_item.c12
-rw-r--r--fs/xfs/xfs_extfree_item.c3
-rw-r--r--fs/xfs/xfs_iomap.c7
-rw-r--r--fs/xfs/xfs_log.h2
-rw-r--r--fs/xfs/xfs_log_cil.c15
-rw-r--r--fs/xfs/xfs_trans.c41
31 files changed, 584 insertions, 793 deletions
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 60d27bc9eb83..6b61ded701e1 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -1560,9 +1560,10 @@ retry_locked:
/* NOTE: no side-effects allowed, until we take s_mutex */
revoking = cap->implemented & ~cap->issued;
- if (revoking)
- dout(" mds%d revoking %s\n", cap->mds,
- ceph_cap_string(revoking));
+ dout(" mds%d cap %p issued %s implemented %s revoking %s\n",
+ cap->mds, cap, ceph_cap_string(cap->issued),
+ ceph_cap_string(cap->implemented),
+ ceph_cap_string(revoking));
if (cap == ci->i_auth_cap &&
(cap->issued & CEPH_CAP_FILE_WR)) {
@@ -1658,6 +1659,8 @@ ack:
if (cap == ci->i_auth_cap && ci->i_dirty_caps)
flushing = __mark_caps_flushing(inode, session);
+ else
+ flushing = 0;
mds = cap->mds; /* remember mds, so we don't repeat */
sent++;
@@ -1940,6 +1943,35 @@ void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc,
}
}
+static void kick_flushing_inode_caps(struct ceph_mds_client *mdsc,
+ struct ceph_mds_session *session,
+ struct inode *inode)
+{
+ struct ceph_inode_info *ci = ceph_inode(inode);
+ struct ceph_cap *cap;
+ int delayed = 0;
+
+ spin_lock(&inode->i_lock);
+ cap = ci->i_auth_cap;
+ dout("kick_flushing_inode_caps %p flushing %s flush_seq %lld\n", inode,
+ ceph_cap_string(ci->i_flushing_caps), ci->i_cap_flush_seq);
+ __ceph_flush_snaps(ci, &session, 1);
+ if (ci->i_flushing_caps) {
+ delayed = __send_cap(mdsc, cap, CEPH_CAP_OP_FLUSH,
+ __ceph_caps_used(ci),
+ __ceph_caps_wanted(ci),
+ cap->issued | cap->implemented,
+ ci->i_flushing_caps, NULL);
+ if (delayed) {
+ spin_lock(&inode->i_lock);
+ __cap_delay_requeue(mdsc, ci);
+ spin_unlock(&inode->i_lock);
+ }
+ } else {
+ spin_unlock(&inode->i_lock);
+ }
+}
+
/*
* Take references to capabilities we hold, so that we don't release
@@ -2687,7 +2719,7 @@ static void handle_cap_import(struct ceph_mds_client *mdsc,
ceph_add_cap(inode, session, cap_id, -1,
issued, wanted, seq, mseq, realmino, CEPH_CAP_FLAG_AUTH,
NULL /* no caps context */);
- try_flush_caps(inode, session, NULL);
+ kick_flushing_inode_caps(mdsc, session, inode);
up_read(&mdsc->snap_rwsem);
/* make sure we re-request max_size, if necessary */
@@ -2785,8 +2817,7 @@ void ceph_handle_caps(struct ceph_mds_session *session,
case CEPH_CAP_OP_IMPORT:
handle_cap_import(mdsc, inode, h, session,
snaptrace, snaptrace_len);
- ceph_check_caps(ceph_inode(inode), CHECK_CAPS_NODELAY,
- session);
+ ceph_check_caps(ceph_inode(inode), 0, session);
goto done_unlocked;
}
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index e835eff551e3..5625463aa479 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -710,10 +710,6 @@ static int fill_inode(struct inode *inode,
ci->i_ceph_flags |= CEPH_I_COMPLETE;
ci->i_max_offset = 2;
}
-
- /* it may be better to set st_size in getattr instead? */
- if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), RBYTES))
- inode->i_size = ci->i_rbytes;
break;
default:
pr_err("fill_inode %llx.%llx BAD mode 0%o\n",
@@ -1819,7 +1815,11 @@ int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry,
else
stat->dev = 0;
if (S_ISDIR(inode->i_mode)) {
- stat->size = ci->i_rbytes;
+ if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb),
+ RBYTES))
+ stat->size = ci->i_rbytes;
+ else
+ stat->size = ci->i_files + ci->i_subdirs;
stat->blocks = 0;
stat->blksize = 65536;
}
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 1e30d194a8e3..a1ee8fa3a8e7 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -693,9 +693,11 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
dout("choose_mds %p %llx.%llx "
"frag %u mds%d (%d/%d)\n",
inode, ceph_vinop(inode),
- frag.frag, frag.mds,
+ frag.frag, mds,
(int)r, frag.ndist);
- return mds;
+ if (ceph_mdsmap_get_state(mdsc->mdsmap, mds) >=
+ CEPH_MDS_STATE_ACTIVE)
+ return mds;
}
/* since this file/dir wasn't known to be
@@ -708,7 +710,9 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
dout("choose_mds %p %llx.%llx "
"frag %u mds%d (auth)\n",
inode, ceph_vinop(inode), frag.frag, mds);
- return mds;
+ if (ceph_mdsmap_get_state(mdsc->mdsmap, mds) >=
+ CEPH_MDS_STATE_ACTIVE)
+ return mds;
}
}
}
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index bf6f0f34082a..9c5085465a63 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -290,6 +290,8 @@ static int parse_mount_options(struct ceph_mount_options **pfsopt,
fsopt->rsize = CEPH_MOUNT_RSIZE_DEFAULT;
fsopt->snapdir_name = kstrdup(CEPH_SNAPDIRNAME_DEFAULT, GFP_KERNEL);
+ fsopt->caps_wanted_delay_min = CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT;
+ fsopt->caps_wanted_delay_max = CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT;
fsopt->cap_release_safety = CEPH_CAP_RELEASE_SAFETY_DEFAULT;
fsopt->max_readdir = CEPH_MAX_READDIR_DEFAULT;
fsopt->max_readdir_bytes = CEPH_MAX_READDIR_BYTES_DEFAULT;
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index 6e12a6ba5f79..8c9eba6ef9df 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -219,6 +219,7 @@ static struct ceph_inode_xattr *__get_xattr(struct ceph_inode_info *ci,
struct rb_node **p;
struct rb_node *parent = NULL;
struct ceph_inode_xattr *xattr = NULL;
+ int name_len = strlen(name);
int c;
p = &ci->i_xattrs.index.rb_node;
@@ -226,6 +227,8 @@ static struct ceph_inode_xattr *__get_xattr(struct ceph_inode_info *ci,
parent = *p;
xattr = rb_entry(parent, struct ceph_inode_xattr, node);
c = strncmp(name, xattr->name, xattr->name_len);
+ if (c == 0 && name_len > xattr->name_len)
+ c = 1;
if (c < 0)
p = &(*p)->rb_left;
else if (c > 0)
diff --git a/fs/cifs/Makefile b/fs/cifs/Makefile
index 43b19dd39191..d87558448e3d 100644
--- a/fs/cifs/Makefile
+++ b/fs/cifs/Makefile
@@ -5,7 +5,7 @@ obj-$(CONFIG_CIFS) += cifs.o
cifs-y := cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o inode.o \
link.o misc.o netmisc.o smbdes.o smbencrypt.o transport.o asn1.o \
- md4.o md5.o cifs_unicode.o nterr.o xattr.o cifsencrypt.o \
+ cifs_unicode.o nterr.o xattr.o cifsencrypt.o \
readdir.o ioctl.o sess.o export.o
cifs-$(CONFIG_CIFS_ACL) += cifsacl.o
diff --git a/fs/cifs/README b/fs/cifs/README
index 46af99ab3614..fe1683590828 100644
--- a/fs/cifs/README
+++ b/fs/cifs/README
@@ -452,6 +452,11 @@ A partial list of the supported mount options follows:
if oplock (caching token) is granted and held. Note that
direct allows write operations larger than page size
to be sent to the server.
+ strictcache Use for switching on strict cache mode. In this mode the
+ client read from the cache all the time it has Oplock Level II,
+ otherwise - read from the server. All written data are stored
+ in the cache, but if the client doesn't have Exclusive Oplock,
+ it writes the data to the server.
acl Allow setfacl and getfacl to manage posix ACLs if server
supports them. (default)
noacl Do not allow setfacl and getfacl calls on this mount
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 66f3d50d0676..0db5f1de0227 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -24,7 +24,6 @@
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifs_debug.h"
-#include "md5.h"
#include "cifs_unicode.h"
#include "cifsproto.h"
#include "ntlmssp.h"
@@ -37,11 +36,6 @@
/* Note that the smb header signature field on input contains the
sequence number before this function is called */
-extern void mdfour(unsigned char *out, unsigned char *in, int n);
-extern void E_md4hash(const unsigned char *passwd, unsigned char *p16);
-extern void SMBencrypt(unsigned char *passwd, const unsigned char *c8,
- unsigned char *p24);
-
static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu,
struct TCP_Server_Info *server, char *signature)
{
@@ -234,6 +228,7 @@ int cifs_verify_signature(struct smb_hdr *cifs_pdu,
/* first calculate 24 bytes ntlm response and then 16 byte session key */
int setup_ntlm_response(struct cifsSesInfo *ses)
{
+ int rc = 0;
unsigned int temp_len = CIFS_SESS_KEY_SIZE + CIFS_AUTH_RESP_SIZE;
char temp_key[CIFS_SESS_KEY_SIZE];
@@ -247,13 +242,26 @@ int setup_ntlm_response(struct cifsSesInfo *ses)
}
ses->auth_key.len = temp_len;
- SMBNTencrypt(ses->password, ses->server->cryptkey,
+ rc = SMBNTencrypt(ses->password, ses->server->cryptkey,
ses->auth_key.response + CIFS_SESS_KEY_SIZE);
+ if (rc) {
+ cFYI(1, "%s Can't generate NTLM response, error: %d",
+ __func__, rc);
+ return rc;
+ }
+
+ rc = E_md4hash(ses->password, temp_key);
+ if (rc) {
+ cFYI(1, "%s Can't generate NT hash, error: %d", __func__, rc);
+ return rc;
+ }
- E_md4hash(ses->password, temp_key);
- mdfour(ses->auth_key.response, temp_key, CIFS_SESS_KEY_SIZE);
+ rc = mdfour(ses->auth_key.response, temp_key, CIFS_SESS_KEY_SIZE);
+ if (rc)
+ cFYI(1, "%s Can't generate NTLM session key, error: %d",
+ __func__, rc);
- return 0;
+ return rc;
}
#ifdef CONFIG_CIFS_WEAK_PW_HASH
@@ -700,14 +708,13 @@ cifs_crypto_shash_allocate(struct TCP_Server_Info *server)
unsigned int size;
server->secmech.hmacmd5 = crypto_alloc_shash("hmac(md5)", 0, 0);
- if (!server->secmech.hmacmd5 ||
- IS_ERR(server->secmech.hmacmd5)) {
+ if (IS_ERR(server->secmech.hmacmd5)) {
cERROR(1, "could not allocate crypto hmacmd5\n");
return PTR_ERR(server->secmech.hmacmd5);
}
server->secmech.md5 = crypto_alloc_shash("md5", 0, 0);
- if (!server->secmech.md5 || IS_ERR(server->secmech.md5)) {
+ if (IS_ERR(server->secmech.md5)) {
cERROR(1, "could not allocate crypto md5\n");
rc = PTR_ERR(server->secmech.md5);
goto crypto_allocate_md5_fail;
diff --git a/fs/cifs/cifsencrypt.h b/fs/cifs/cifsencrypt.h
deleted file mode 100644
index 15d2ec006474..000000000000
--- a/fs/cifs/cifsencrypt.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * fs/cifs/cifsencrypt.h
- *
- * Copyright (c) International Business Machines Corp., 2005
- * Author(s): Steve French (sfrench@us.ibm.com)
- *
- * Externs for misc. small encryption routines
- * so we do not have to put them in cifsproto.h
- *
- * This library is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; either version 2.1 of the License, or
- * (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
- * the GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/* md4.c */
-extern void mdfour(unsigned char *out, unsigned char *in, int n);
-/* smbdes.c */
-extern void E_P16(unsigned char *p14, unsigned char *p16);
-extern void E_P24(unsigned char *p21, const unsigned char *c8,
- unsigned char *p24);
-
-
-
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index a8323f1dc1c4..f2970136d17d 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -600,10 +600,17 @@ static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
{
struct inode *inode = iocb->ki_filp->f_path.dentry->d_inode;
ssize_t written;
+ int rc;
written = generic_file_aio_write(iocb, iov, nr_segs, pos);
- if (!CIFS_I(inode)->clientCanCacheAll)
- filemap_fdatawrite(inode->i_mapping);
+
+ if (CIFS_I(inode)->clientCanCacheAll)
+ return written;
+
+ rc = filemap_fdatawrite(inode->i_mapping);
+ if (rc)
+ cFYI(1, "cifs_file_aio_write: %d rc on %p inode", rc, inode);
+
return written;
}
@@ -737,7 +744,7 @@ const struct file_operations cifs_file_strict_ops = {
.read = do_sync_read,
.write = do_sync_write,
.aio_read = cifs_strict_readv,
- .aio_write = cifs_file_aio_write,
+ .aio_write = cifs_strict_writev,
.open = cifs_open,
.release = cifs_close,
.lock = cifs_lock,
@@ -793,7 +800,7 @@ const struct file_operations cifs_file_strict_nobrl_ops = {
.read = do_sync_read,
.write = do_sync_write,
.aio_read = cifs_strict_readv,
- .aio_write = cifs_file_aio_write,
+ .aio_write = cifs_strict_writev,
.open = cifs_open,
.release = cifs_close,
.fsync = cifs_strict_fsync,
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index f23206d46531..14789a97304e 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -85,7 +85,9 @@ extern ssize_t cifs_user_read(struct file *file, char __user *read_data,
extern ssize_t cifs_strict_readv(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos);
extern ssize_t cifs_user_write(struct file *file, const char __user *write_data,
- size_t write_size, loff_t *poffset);
+ size_t write_size, loff_t *poffset);
+extern ssize_t cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
+ unsigned long nr_segs, loff_t pos);
extern int cifs_lock(struct file *, int, struct file_lock *);
extern int cifs_fsync(struct file *, int);
extern int cifs_strict_fsync(struct file *, int);
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 982895fa7615..8096f27ad9a8 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -85,6 +85,8 @@ extern int checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length);
extern bool is_valid_oplock_break(struct smb_hdr *smb,
struct TCP_Server_Info *);
extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
+extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
+ unsigned int bytes_written);
extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool);
extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
extern unsigned int smbCalcSize(struct smb_hdr *ptr);
@@ -373,7 +375,7 @@ extern int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
extern int cifs_verify_signature(struct smb_hdr *,
struct TCP_Server_Info *server,
__u32 expected_sequence_number);
-extern void SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *);
+extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *);
extern int setup_ntlm_response(struct cifsSesInfo *);
extern int setup_ntlmv2_rsp(struct cifsSesInfo *, const struct nls_table *);
extern int cifs_crypto_shash_allocate(struct TCP_Server_Info *);
@@ -423,4 +425,11 @@ extern bool CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr);
extern int CIFSCheckMFSymlink(struct cifs_fattr *fattr,
const unsigned char *path,
struct cifs_sb_info *cifs_sb, int xid);
+extern int mdfour(unsigned char *, unsigned char *, int);
+extern int E_md4hash(const unsigned char *passwd, unsigned char *p16);
+extern void SMBencrypt(unsigned char *passwd, const unsigned char *c8,
+ unsigned char *p24);
+extern void E_P16(unsigned char *p14, unsigned char *p16);
+extern void E_P24(unsigned char *p21, const unsigned char *c8,
+ unsigned char *p24);
#endif /* _CIFSPROTO_H */
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 0cc3b81c2e84..47d8ff623683 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -55,9 +55,6 @@
/* SMB echo "timeout" -- FIXME: tunable? */
#define SMB_ECHO_INTERVAL (60 * HZ)
-extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
- unsigned char *p24);
-
extern mempool_t *cifs_req_poolp;
struct smb_vol {
@@ -87,6 +84,7 @@ struct smb_vol {
bool no_xattr:1; /* set if xattr (EA) support should be disabled*/
bool server_ino:1; /* use inode numbers from server ie UniqueId */
bool direct_io:1;
+ bool strict_io:1; /* strict cache behavior */
bool remap:1; /* set to remap seven reserved chars in filenames */
bool posix_paths:1; /* unset to not ask for posix pathnames. */
bool no_linux_ext:1;
@@ -1344,6 +1342,8 @@ cifs_parse_mount_options(char *options, const char *devname,
vol->direct_io = 1;
} else if (strnicmp(data, "forcedirectio", 13) == 0) {
vol->direct_io = 1;
+ } else if (strnicmp(data, "strictcache", 11) == 0) {
+ vol->strict_io = 1;
} else if (strnicmp(data, "noac", 4) == 0) {
printk(KERN_WARNING "CIFS: Mount option noac not "
"supported. Instead set "
@@ -2584,6 +2584,8 @@ static void setup_cifs_sb(struct smb_vol *pvolume_info,
if (pvolume_info->multiuser)
cifs_sb->mnt_cifs_flags |= (CIFS_MOUNT_MULTIUSER |
CIFS_MOUNT_NO_PERM);
+ if (pvolume_info->strict_io)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_STRICT_IO;
if (pvolume_info->direct_io) {
cFYI(1, "mounting share using direct i/o");
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
@@ -2985,7 +2987,8 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr);
else
#endif /* CIFS_WEAK_PW_HASH */
- SMBNTencrypt(tcon->password, ses->server->cryptkey, bcc_ptr);
+ rc = SMBNTencrypt(tcon->password, ses->server->cryptkey,
+ bcc_ptr);
bcc_ptr += CIFS_AUTH_RESP_SIZE;
if (ses->capabilities & CAP_UNICODE) {
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index d7d65a70678e..0de17c1db608 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -848,7 +848,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
}
/* update the file size (if needed) after a write */
-static void
+void
cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
unsigned int bytes_written)
{
@@ -1619,6 +1619,206 @@ int cifs_flush(struct file *file, fl_owner_t id)
return rc;
}
+static int
+cifs_write_allocate_pages(struct page **pages, unsigned long num_pages)
+{
+ int rc = 0;
+ unsigned long i;
+
+ for (i = 0; i < num_pages; i++) {
+ pages[i] = alloc_page(__GFP_HIGHMEM);
+ if (!pages[i]) {
+ /*
+ * save number of pages we have already allocated and
+ * return with ENOMEM error
+ */
+ num_pages = i;
+ rc = -ENOMEM;
+ goto error;
+ }
+ }
+
+ return rc;
+
+error:
+ for (i = 0; i < num_pages; i++)
+ put_page(pages[i]);
+ return rc;
+}
+
+static inline
+size_t get_numpages(const size_t wsize, const size_t len, size_t *cur_len)
+{
+ size_t num_pages;
+ size_t clen;
+
+ clen = min_t(const size_t, len, wsize);
+ num_pages = clen / PAGE_CACHE_SIZE;
+ if (clen % PAGE_CACHE_SIZE)
+ num_pages++;
+
+ if (cur_len)
+ *cur_len = clen;
+
+ return num_pages;
+}
+
+static ssize_t
+cifs_iovec_write(struct file *file, const struct iovec *iov,
+ unsigned long nr_segs, loff_t *poffset)
+{
+ size_t total_written = 0, written = 0;
+ unsigned long num_pages, npages;
+ size_t copied, len, cur_len, i;
+ struct kvec *to_send;
+ struct page **pages;
+ struct iov_iter it;
+ struct inode *inode;
+ struct cifsFileInfo *open_file;
+ struct cifsTconInfo *pTcon;
+ struct cifs_sb_info *cifs_sb;
+ int xid, rc;
+
+ len = iov_length(iov, nr_segs);
+ if (!len)
+ return 0;
+
+ rc = generic_write_checks(file, poffset, &len, 0);
+ if (rc)
+ return rc;
+
+ cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
+ num_pages = get_numpages(cifs_sb->wsize, len, &cur_len);
+
+ pages = kmalloc(sizeof(struct pages *)*num_pages, GFP_KERNEL);
+ if (!pages)
+ return -ENOMEM;
+
+ to_send = kmalloc(sizeof(struct kvec)*(num_pages + 1), GFP_KERNEL);
+ if (!to_send) {
+ kfree(pages);
+ return -ENOMEM;
+ }
+
+ rc = cifs_write_allocate_pages(pages, num_pages);
+ if (rc) {
+ kfree(pages);
+ kfree(to_send);
+ return rc;
+ }
+
+ xid = GetXid();
+ open_file = file->private_data;
+ pTcon = tlink_tcon(open_file->tlink);
+ inode = file->f_path.dentry->d_inode;
+
+ iov_iter_init(&it, iov, nr_segs, len, 0);
+ npages = num_pages;
+
+ do {
+ size_t save_len = cur_len;
+ for (i = 0; i < npages; i++) {
+ copied = min_t(const size_t, cur_len, PAGE_CACHE_SIZE);
+ copied = iov_iter_copy_from_user(pages[i], &it, 0,
+ copied);
+ cur_len -= copied;
+ iov_iter_advance(&it, copied);
+ to_send[i+1].iov_base = kmap(pages[i]);
+ to_send[i+1].iov_len = copied;
+ }
+
+ cur_len = save_len - cur_len;
+
+ do {
+ if (open_file->invalidHandle) {
+ rc = cifs_reopen_file(open_file, false);
+ if (rc != 0)
+ break;
+ }
+ rc = CIFSSMBWrite2(xid, pTcon, open_file->netfid,
+ cur_len, *poffset, &written,
+ to_send, npages, 0);
+ } while (rc == -EAGAIN);
+
+ for (i = 0; i < npages; i++)
+ kunmap(pages[i]);
+
+ if (written) {
+ len -= written;
+ total_written += written;
+ cifs_update_eof(CIFS_I(inode), *poffset, written);
+ *poffset += written;
+ } else if (rc < 0) {
+ if (!total_written)
+ total_written = rc;
+ break;
+ }
+
+ /* get length and number of kvecs of the next write */
+ npages = get_numpages(cifs_sb->wsize, len, &cur_len);
+ } while (len > 0);
+
+ if (total_written > 0) {
+ spin_lock(&inode->i_lock);
+ if (*poffset > inode->i_size)
+ i_size_write(inode, *poffset);
+ spin_unlock(&inode->i_lock);
+ }
+
+ cifs_stats_bytes_written(pTcon, total_written);
+ mark_inode_dirty_sync(inode);
+
+ for (i = 0; i < num_pages; i++)
+ put_page(pages[i]);
+ kfree(to_send);
+ kfree(pages);
+ FreeXid(xid);
+ return total_written;
+}
+
+static ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
+ unsigned long nr_segs, loff_t pos)
+{
+ ssize_t written;
+ struct inode *inode;
+
+ inode = iocb->ki_filp->f_path.dentry->d_inode;
+
+ /*
+ * BB - optimize the way when signing is disabled. We can drop this
+ * extra memory-to-memory copying and use iovec buffers for constructing
+ * write request.
+ */
+
+ written = cifs_iovec_write(iocb->ki_filp, iov, nr_segs, &pos);
+ if (written > 0) {
+ CIFS_I(inode)->invalid_mapping = true;
+ iocb->ki_pos = pos;
+ }
+
+ return written;
+}
+
+ssize_t cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
+ unsigned long nr_segs, loff_t pos)
+{
+ struct inode *inode;
+
+ inode = iocb->ki_filp->f_path.dentry->d_inode;
+
+ if (CIFS_I(inode)->clientCanCacheAll)
+ return generic_file_aio_write(iocb, iov, nr_segs, pos);
+
+ /*
+ * In strict cache mode we need to write the data to the server exactly
+ * from the pos to pos+len-1 rather than flush all affected pages
+ * because it may cause a error with mandatory locks on these pages but
+ * not on the region from pos to ppos+len-1.
+ */
+
+ return cifs_user_writev(iocb, iov, nr_segs, pos);
+}
+
static ssize_t
cifs_iovec_read(struct file *file, const struct iovec *iov,
unsigned long nr_segs, loff_t *poffset)
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 306769de2fb5..02cd60aefbff 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -28,7 +28,6 @@
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
-#include "md5.h"
#define CIFS_MF_SYMLINK_LEN_OFFSET (4+1)
#define CIFS_MF_SYMLINK_MD5_OFFSET (CIFS_MF_SYMLINK_LEN_OFFSET+(4+1))
@@ -47,6 +46,44 @@
md5_hash[12], md5_hash[13], md5_hash[14], md5_hash[15]
static int
+symlink_hash(unsigned int link_len, const char *link_str, u8 *md5_hash)
+{
+ int rc;
+ unsigned int size;
+ struct crypto_shash *md5;
+ struct sdesc *sdescmd5;
+
+ md5 = crypto_alloc_shash("md5", 0, 0);
+ if (IS_ERR(md5)) {
+ cERROR(1, "%s: Crypto md5 allocation error %d\n", __func__, rc);
+ return PTR_ERR(md5);
+ }
+ size = sizeof(struct shash_desc) + crypto_shash_descsize(md5);
+ sdescmd5 = kmalloc(size, GFP_KERNEL);
+ if (!sdescmd5) {
+ rc = -ENOMEM;
+ cERROR(1, "%s: Memory allocation failure\n", __func__);
+ goto symlink_hash_err;
+ }
+ sdescmd5->shash.tfm = md5;
+ sdescmd5->shash.flags = 0x0;
+
+ rc = crypto_shash_init(&sdescmd5->shash);
+ if (rc) {
+ cERROR(1, "%s: Could not init md5 shash\n", __func__);
+ goto symlink_hash_err;
+ }
+ crypto_shash_update(&sdescmd5->shash, link_str, link_len);
+ rc = crypto_shash_final(&sdescmd5->shash, md5_hash);
+
+symlink_hash_err:
+ crypto_free_shash(md5);
+ kfree(sdescmd5);
+
+ return rc;
+}
+
+static int
CIFSParseMFSymlink(const u8 *buf,
unsigned int buf_len,
unsigned int *_link_len,
@@ -56,7 +93,6 @@ CIFSParseMFSymlink(const u8 *buf,
unsigned int link_len;
const char *md5_str1;
const char *link_str;
- struct MD5Context md5_ctx;
u8 md5_hash[16];
char md5_str2[34];
@@ -70,9 +106,11 @@ CIFSParseMFSymlink(const u8 *buf,
if (rc != 1)
return -EINVAL;
- cifs_MD5_init(&md5_ctx);
- cifs_MD5_update(&md5_ctx, (const u8 *)link_str, link_len);
- cifs_MD5_final(md5_hash, &md5_ctx);
+ rc = symlink_hash(link_len, link_str, md5_hash);
+ if (rc) {
+ cFYI(1, "%s: MD5 hash failure: %d\n", __func__, rc);
+ return rc;
+ }
snprintf(md5_str2, sizeof(md5_str2),
CIFS_MF_SYMLINK_MD5_FORMAT,
@@ -94,9 +132,9 @@ CIFSParseMFSymlink(const u8 *buf,
static int
CIFSFormatMFSymlink(u8 *buf, unsigned int buf_len, const char *link_str)
{
+ int rc;
unsigned int link_len;
unsigned int ofs;
- struct MD5Context md5_ctx;
u8 md5_hash[16];
if (buf_len != CIFS_MF_SYMLINK_FILE_SIZE)
@@ -107,9 +145,11 @@ CIFSFormatMFSymlink(u8 *buf, unsigned int buf_len, const char *link_str)
if (link_len > CIFS_MF_SYMLINK_LINK_MAXLEN)
return -ENAMETOOLONG;
- cifs_MD5_init(&md5_ctx);
- cifs_MD5_update(&md5_ctx, (const u8 *)link_str, link_len);
- cifs_MD5_final(md5_hash, &md5_ctx);
+ rc = symlink_hash(link_len, link_str, md5_hash);
+ if (rc) {
+ cFYI(1, "%s: MD5 hash failure: %d\n", __func__, rc);
+ return rc;
+ }
snprintf(buf, buf_len,
CIFS_MF_SYMLINK_LEN_FORMAT CIFS_MF_SYMLINK_MD5_FORMAT,
diff --git a/fs/cifs/md4.c b/fs/cifs/md4.c
deleted file mode 100644
index a725c2609d67..000000000000
--- a/fs/cifs/md4.c
+++ /dev/null
@@ -1,205 +0,0 @@
-/*
- Unix SMB/Netbios implementation.
- Version 1.9.
- a implementation of MD4 designed for use in the SMB authentication protocol
- Copyright (C) Andrew Tridgell 1997-1998.
- Modified by Steve French (sfrench@us.ibm.com) 2002-2003
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-#include <linux/module.h>
-#include <linux/fs.h>
-#include "cifsencrypt.h"
-
-/* NOTE: This code makes no attempt to be fast! */
-
-static __u32
-F(__u32 X, __u32 Y, __u32 Z)
-{
- return (X & Y) | ((~X) & Z);
-}
-
-static __u32
-G(__u32 X, __u32 Y, __u32 Z)
-{
- return (X & Y) | (X & Z) | (Y & Z);
-}
-
-static __u32
-H(__u32 X, __u32 Y, __u32 Z)
-{
- return X ^ Y ^ Z;
-}
-
-static __u32
-lshift(__u32 x, int s)
-{
- x &= 0xFFFFFFFF;
- return ((x << s) & 0xFFFFFFFF) | (x >> (32 - s));
-}
-
-#define ROUND1(a,b,c,d,k,s) (*a) = lshift((*a) + F(*b,*c,*d) + X[k], s)
-#define ROUND2(a,b,c,d,k,s) (*a) = lshift((*a) + G(*b,*c,*d) + X[k] + (__u32)0x5A827999,s)
-#define ROUND3(a,b,c,d,k,s) (*a) = lshift((*a) + H(*b,*c,*d) + X[k] + (__u32)0x6ED9EBA1,s)
-
-/* this applies md4 to 64 byte chunks */
-static void
-mdfour64(__u32 *M, __u32 *A, __u32 *B, __u32 *C, __u32 *D)
-{
- int j;
- __u32 AA, BB, CC, DD;
- __u32 X[16];
-
-
- for (j = 0; j < 16; j++)
- X[j] = M[j];
-
- AA = *A;
- BB = *B;
- CC = *C;
- DD = *D;
-
- ROUND1(A, B, C, D, 0, 3);
- ROUND1(D, A, B, C, 1, 7);
- ROUND1(C, D, A, B, 2, 11);
- ROUND1(B, C, D, A, 3, 19);
- ROUND1(A, B, C, D, 4, 3);
- ROUND1(D, A, B, C, 5, 7);
- ROUND1(C, D, A, B, 6, 11);
- ROUND1(B, C, D, A, 7, 19);
- ROUND1(A, B, C, D, 8, 3);
- ROUND1(D, A, B, C, 9, 7);
- ROUND1(C, D, A, B, 10, 11);
- ROUND1(B, C, D, A, 11, 19);
- ROUND1(A, B, C, D, 12, 3);
- ROUND1(D, A, B, C, 13, 7);
- ROUND1(C, D, A, B, 14, 11);
- ROUND1(B, C, D, A, 15, 19);
-
- ROUND2(A, B, C, D, 0, 3);
- ROUND2(D, A, B, C, 4, 5);
- ROUND2(C, D, A, B, 8, 9);
- ROUND2(B, C, D, A, 12, 13);
- ROUND2(A, B, C, D, 1, 3);
- ROUND2(D, A, B, C, 5, 5);
- ROUND2(C, D, A, B, 9, 9);
- ROUND2(B, C, D, A, 13, 13);
- ROUND2(A, B, C, D, 2, 3);
- ROUND2(D, A, B, C, 6, 5);
- ROUND2(C, D, A, B, 10, 9);
- ROUND2(B, C, D, A, 14, 13);
- ROUND2(A, B, C, D, 3, 3);
- ROUND2(D, A, B, C, 7, 5);
- ROUND2(C, D, A, B, 11, 9);
- ROUND2(B, C, D, A, 15, 13);
-
- ROUND3(A, B, C, D, 0, 3);
- ROUND3(D, A, B, C, 8, 9);
- ROUND3(C, D, A, B, 4, 11);
- ROUND3(B, C, D, A, 12, 15);
- ROUND3(A, B, C, D, 2, 3);
- ROUND3(D, A, B, C, 10, 9);
- ROUND3(C, D, A, B, 6, 11);
- ROUND3(B, C, D, A, 14, 15);
- ROUND3(A, B, C, D, 1, 3);
- ROUND3(D, A, B, C, 9, 9);
- ROUND3(C, D, A, B, 5, 11);
- ROUND3(B, C, D, A, 13, 15);
- ROUND3(A, B, C, D, 3, 3);
- ROUND3(D, A, B, C, 11, 9);
- ROUND3(C, D, A, B, 7, 11);
- ROUND3(B, C, D, A, 15, 15);
-
- *A += AA;
- *B += BB;
- *C += CC;
- *D += DD;
-
- *A &= 0xFFFFFFFF;
- *B &= 0xFFFFFFFF;
- *C &= 0xFFFFFFFF;
- *D &= 0xFFFFFFFF;
-
- for (j = 0; j < 16; j++)
- X[j] = 0;
-}
-
-static void
-copy64(__u32 *M, unsigned char *in)
-{
- int i;
-
- for (i = 0; i < 16; i++)
- M[i] = (in[i * 4 + 3] << 24) | (in[i * 4 + 2] << 16) |
- (in[i * 4 + 1] << 8) | (in[i * 4 + 0] << 0);
-}
-
-static void
-copy4(unsigned char *out, __u32 x)
-{
- out[0] = x & 0xFF;
- out[1] = (x >> 8) & 0xFF;
- out[2] = (x >> 16) & 0xFF;
- out[3] = (x >> 24) & 0xFF;
-}
-
-/* produce a md4 message digest from data of length n bytes */
-void
-mdfour(unsigned char *out, unsigned char *in, int n)
-{
- unsigned char buf[128];
- __u32 M[16];
- __u32 b = n * 8;
- int i;
- __u32 A = 0x67452301;
- __u32 B = 0xefcdab89;
- __u32 C = 0x98badcfe;
- __u32 D = 0x10325476;
-
- while (n > 64) {
- copy64(M, in);
- mdfour64(M, &A, &B, &C, &D);
- in += 64;
- n -= 64;
- }
-
- for (i = 0; i < 128; i++)
- buf[i] = 0;
- memcpy(buf, in, n);
- buf[n] = 0x80;
-
- if (n <= 55) {
- copy4(buf + 56, b);
- copy64(M, buf);
- mdfour64(M, &A, &B, &C, &D);
- } else {
- copy4(buf + 120, b);
- copy64(M, buf);
- mdfour64(M, &A, &B, &C, &D);
- copy64(M, buf + 64);
- mdfour64(M, &A, &B, &C, &D);
- }
-
- for (i = 0; i < 128; i++)
- buf[i] = 0;
- copy64(M, buf);
-
- copy4(out, A);
- copy4(out + 4, B);
- copy4(out + 8, C);
- copy4(out + 12, D);
-
- A = B = C = D = 0;
-}
diff --git a/fs/cifs/md5.c b/fs/cifs/md5.c
deleted file mode 100644
index 98b66a54c319..000000000000
--- a/fs/cifs/md5.c
+++ /dev/null
@@ -1,366 +0,0 @@
-/*
- * This code implements the MD5 message-digest algorithm.
- * The algorithm is due to Ron Rivest. This code was
- * written by Colin Plumb in 1993, no copyright is claimed.
- * This code is in the public domain; do with it what you wish.
- *
- * Equivalent code is available from RSA Data Security, Inc.
- * This code has been tested against that, and is equivalent,
- * except that you don't need to include two pages of legalese
- * with every copy.
- *
- * To compute the message digest of a chunk of bytes, declare an
- * MD5Context structure, pass it to cifs_MD5_init, call cifs_MD5_update as
- * needed on buffers full of bytes, and then call cifs_MD5_final, which
- * will fill a supplied 16-byte array with the digest.
- */
-
-/* This code slightly modified to fit into Samba by
- abartlet@samba.org Jun 2001
- and to fit the cifs vfs by
- Steve French sfrench@us.ibm.com */
-
-#include <linux/string.h>
-#include "md5.h"
-
-static void MD5Transform(__u32 buf[4], __u32 const in[16]);
-
-/*
- * Note: this code is harmless on little-endian machines.
- */
-static void
-byteReverse(unsigned char *buf, unsigned longs)
-{
- __u32 t;
- do {
- t = (__u32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
- ((unsigned) buf[1] << 8 | buf[0]);
- *(__u32 *) buf = t;
- buf += 4;
- } while (--longs);
-}
-
-/*
- * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
- * initialization constants.
- */
-void
-cifs_MD5_init(struct MD5Context *ctx)
-{
- ctx->buf[0] = 0x67452301;
- ctx->buf[1] = 0xefcdab89;
- ctx->buf[2] = 0x98badcfe;
- ctx->buf[3] = 0x10325476;
-
- ctx->bits[0] = 0;
- ctx->bits[1] = 0;
-}
-
-/*
- * Update context to reflect the concatenation of another buffer full
- * of bytes.
- */
-void
-cifs_MD5_update(struct MD5Context *ctx, unsigned char const *buf, unsigned len)
-{
- register __u32 t;
-
- /* Update bitcount */
-
- t = ctx->bits[0];
- if ((ctx->bits[0] = t + ((__u32) len << 3)) < t)
- ctx->bits[1]++; /* Carry from low to high */
- ctx->bits[1] += len >> 29;
-
- t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
-
- /* Handle any leading odd-sized chunks */
-
- if (t) {
- unsigned char *p = (unsigned char *) ctx->in + t;
-
- t = 64 - t;
- if (len < t) {
- memmove(p, buf, len);
- return;
- }
- memmove(p, buf, t);
- byteReverse(ctx->in, 16);
- MD5Transform(ctx->buf, (__u32 *) ctx->in);
- buf += t;
- len -= t;
- }
- /* Process data in 64-byte chunks */
-
- while (len >= 64) {
- memmove(ctx->in, buf, 64);
- byteReverse(ctx->in, 16);
- MD5Transform(ctx->buf, (__u32 *) ctx->in);
- buf += 64;
- len -= 64;
- }
-
- /* Handle any remaining bytes of data. */
-
- memmove(ctx->in, buf, len);
-}
-
-/*
- * Final wrapup - pad to 64-byte boundary with the bit pattern
- * 1 0* (64-bit count of bits processed, MSB-first)
- */
-void
-cifs_MD5_final(unsigned char digest[16], struct MD5Context *ctx)
-{
- unsigned int count;
- unsigned char *p;
-
- /* Compute number of bytes mod 64 */
- count = (ctx->bits[0] >> 3) & 0x3F;
-
- /* Set the first char of padding to 0x80. This is safe since there is
- always at least one byte free */
- p = ctx->in + count;
- *p++ = 0x80;
-
- /* Bytes of padding needed to make 64 bytes */
- count = 64 - 1 - count;
-
- /* Pad out to 56 mod 64 */
- if (count < 8) {
- /* Two lots of padding: Pad the first block to 64 bytes */
- memset(p, 0, count);
- byteReverse(ctx->in, 16);
- MD5Transform(ctx->buf, (__u32 *) ctx->in);
-
- /* Now fill the next block with 56 bytes */
- memset(ctx->in, 0, 56);
- } else {
- /* Pad block to 56 bytes */
- memset(p, 0, count - 8);
- }
- byteReverse(ctx->in, 14);
-
- /* Append length in bits and transform */
- ((__u32 *) ctx->in)[14] = ctx->bits[0];
- ((__u32 *) ctx->in)[15] = ctx->bits[1];
-
- MD5Transform(ctx->buf, (__u32 *) ctx->in);
- byteReverse((unsigned char *) ctx->buf, 4);
- memmove(digest, ctx->buf, 16);
- memset(ctx, 0, sizeof(*ctx)); /* In case it's sensitive */
-}
-
-/* The four core functions - F1 is optimized somewhat */
-
-/* #define F1(x, y, z) (x & y | ~x & z) */
-#define F1(x, y, z) (z ^ (x & (y ^ z)))
-#define F2(x, y, z) F1(z, x, y)
-#define F3(x, y, z) (x ^ y ^ z)
-#define F4(x, y, z) (y ^ (x | ~z))
-
-/* This is the central step in the MD5 algorithm. */
-#define MD5STEP(f, w, x, y, z, data, s) \
- (w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x)
-
-/*
- * The core of the MD5 algorithm, this alters an existing MD5 hash to
- * reflect the addition of 16 longwords of new data. cifs_MD5_update blocks
- * the data and converts bytes into longwords for this routine.
- */
-static void
-MD5Transform(__u32 buf[4], __u32 const in[16])
-{
- register __u32 a, b, c, d;
-
- a = buf[0];
- b = buf[1];
- c = buf[2];
- d = buf[3];
-
- MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
- MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
- MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
- MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
- MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
- MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
- MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
- MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
- MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
- MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
- MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
- MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
- MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
- MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
- MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
- MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
-
- MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
- MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
- MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
- MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
- MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
- MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
- MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
- MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
- MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
- MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
- MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
- MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
- MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
- MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
- MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
- MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
-
- MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
- MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
- MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
- MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
- MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
- MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
- MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
- MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
- MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
- MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
- MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
- MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
- MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
- MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
- MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
- MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
-
- MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
- MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
- MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
- MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
- MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
- MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
- MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
- MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
- MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
- MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
- MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
- MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
- MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
- MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
- MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
- MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
-
- buf[0] += a;
- buf[1] += b;
- buf[2] += c;
- buf[3] += d;
-}
-
-#if 0 /* currently unused */
-/***********************************************************************
- the rfc 2104 version of hmac_md5 initialisation.
-***********************************************************************/
-static void
-hmac_md5_init_rfc2104(unsigned char *key, int key_len,
- struct HMACMD5Context *ctx)
-{
- int i;
-
- /* if key is longer than 64 bytes reset it to key=MD5(key) */
- if (key_len > 64) {
- unsigned char tk[16];
- struct MD5Context tctx;
-
- cifs_MD5_init(&tctx);
- cifs_MD5_update(&tctx, key, key_len);
- cifs_MD5_final(tk, &tctx);
-
- key = tk;
- key_len = 16;
- }
-
- /* start out by storing key in pads */
- memset(ctx->k_ipad, 0, sizeof(ctx->k_ipad));
- memset(ctx->k_opad, 0, sizeof(ctx->k_opad));
- memcpy(ctx->k_ipad, key, key_len);
- memcpy(ctx->k_opad, key, key_len);
-
- /* XOR key with ipad and opad values */
- for (i = 0; i < 64; i++) {
- ctx->k_ipad[i] ^= 0x36;
- ctx->k_opad[i] ^= 0x5c;
- }
-
- cifs_MD5_init(&ctx->ctx);
- cifs_MD5_update(&ctx->ctx, ctx->k_ipad, 64);
-}
-#endif
-
-/***********************************************************************
- the microsoft version of hmac_md5 initialisation.
-***********************************************************************/
-void
-hmac_md5_init_limK_to_64(const unsigned char *key, int key_len,
- struct HMACMD5Context *ctx)
-{
- int i;
-
- /* if key is longer than 64 bytes truncate it */
- if (key_len > 64)
- key_len = 64;
-
- /* start out by storing key in pads */
- memset(ctx->k_ipad, 0, sizeof(ctx->k_ipad));
- memset(ctx->k_opad, 0, sizeof(ctx->k_opad));
- memcpy(ctx->k_ipad, key, key_len);
- memcpy(ctx->k_opad, key, key_len);
-
- /* XOR key with ipad and opad values */
- for (i = 0; i < 64; i++) {
- ctx->k_ipad[i] ^= 0x36;
- ctx->k_opad[i] ^= 0x5c;
- }
-
- cifs_MD5_init(&ctx->ctx);
- cifs_MD5_update(&ctx->ctx, ctx->k_ipad, 64);
-}
-
-/***********************************************************************
- update hmac_md5 "inner" buffer
-***********************************************************************/
-void
-hmac_md5_update(const unsigned char *text, int text_len,
- struct HMACMD5Context *ctx)
-{
- cifs_MD5_update(&ctx->ctx, text, text_len); /* then text of datagram */
-}
-
-/***********************************************************************
- finish off hmac_md5 "inner" buffer and generate outer one.
-***********************************************************************/
-void
-hmac_md5_final(unsigned char *digest, struct HMACMD5Context *ctx)
-{
- struct MD5Context ctx_o;
-
- cifs_MD5_final(digest, &ctx->ctx);
-
- cifs_MD5_init(&ctx_o);
- cifs_MD5_update(&ctx_o, ctx->k_opad, 64);
- cifs_MD5_update(&ctx_o, digest, 16);
- cifs_MD5_final(digest, &ctx_o);
-}
-
-/***********************************************************
- single function to calculate an HMAC MD5 digest from data.
- use the microsoft hmacmd5 init method because the key is 16 bytes.
-************************************************************/
-#if 0 /* currently unused */
-static void
-hmac_md5(unsigned char key[16], unsigned char *data, int data_len,
- unsigned char *digest)
-{
- struct HMACMD5Context ctx;
- hmac_md5_init_limK_to_64(key, 16, &ctx);
- if (data_len != 0)
- hmac_md5_update(data, data_len, &ctx);
-
- hmac_md5_final(digest, &ctx);
-}
-#endif
diff --git a/fs/cifs/md5.h b/fs/cifs/md5.h
deleted file mode 100644
index 6fba8cb402fd..000000000000
--- a/fs/cifs/md5.h
+++ /dev/null
@@ -1,38 +0,0 @@
-#ifndef MD5_H
-#define MD5_H
-#ifndef HEADER_MD5_H
-/* Try to avoid clashes with OpenSSL */
-#define HEADER_MD5_H
-#endif
-
-struct MD5Context {
- __u32 buf[4];
- __u32 bits[2];
- unsigned char in[64];
-};
-#endif /* !MD5_H */
-
-#ifndef _HMAC_MD5_H
-struct HMACMD5Context {
- struct MD5Context ctx;
- unsigned char k_ipad[65];
- unsigned char k_opad[65];
-};
-#endif /* _HMAC_MD5_H */
-
-void cifs_MD5_init(struct MD5Context *context);
-void cifs_MD5_update(struct MD5Context *context, unsigned char const *buf,
- unsigned len);
-void cifs_MD5_final(unsigned char digest[16], struct MD5Context *context);
-
-/* The following definitions come from lib/hmacmd5.c */
-
-/* void hmac_md5_init_rfc2104(unsigned char *key, int key_len,
- struct HMACMD5Context *ctx);*/
-void hmac_md5_init_limK_to_64(const unsigned char *key, int key_len,
- struct HMACMD5Context *ctx);
-void hmac_md5_update(const unsigned char *text, int text_len,
- struct HMACMD5Context *ctx);
-void hmac_md5_final(unsigned char *digest, struct HMACMD5Context *ctx);
-/* void hmac_md5(unsigned char key[16], unsigned char *data, int data_len,
- unsigned char *digest);*/
diff --git a/fs/cifs/smbdes.c b/fs/cifs/smbdes.c
index b6b6dcb500bf..04721485925d 100644
--- a/fs/cifs/smbdes.c
+++ b/fs/cifs/smbdes.c
@@ -45,7 +45,6 @@
up with a different answer to the one above)
*/
#include <linux/slab.h>
-#include "cifsencrypt.h"
#define uchar unsigned char
static uchar perm1[56] = { 57, 49, 41, 33, 25, 17, 9,
diff --git a/fs/cifs/smbencrypt.c b/fs/cifs/smbencrypt.c
index 192ea51af20f..b5450e9f40c0 100644
--- a/fs/cifs/smbencrypt.c
+++ b/fs/cifs/smbencrypt.c
@@ -32,9 +32,8 @@
#include "cifs_unicode.h"
#include "cifspdu.h"
#include "cifsglob.h"
-#include "md5.h"
#include "cifs_debug.h"
-#include "cifsencrypt.h"
+#include "cifsproto.h"
#ifndef false
#define false 0
@@ -48,14 +47,57 @@
#define SSVALX(buf,pos,val) (CVAL(buf,pos)=(val)&0xFF,CVAL(buf,pos+1)=(val)>>8)
#define SSVAL(buf,pos,val) SSVALX((buf),(pos),((__u16)(val)))
-/*The following definitions come from libsmb/smbencrypt.c */
+/* produce a md4 message digest from data of length n bytes */
+int
+mdfour(unsigned char *md4_hash, unsigned char *link_str, int link_len)
+{
+ int rc;
+ unsigned int size;
+ struct crypto_shash *md4;
+ struct sdesc *sdescmd4;
+
+ md4 = crypto_alloc_shash("md4", 0, 0);
+ if (IS_ERR(md4)) {
+ cERROR(1, "%s: Crypto md4 allocation error %d\n", __func__, rc);
+ return PTR_ERR(md4);
+ }
+ size = sizeof(struct shash_desc) + crypto_shash_descsize(md4);
+ sdescmd4 = kmalloc(size, GFP_KERNEL);
+ if (!sdescmd4) {
+ rc = -ENOMEM;
+ cERROR(1, "%s: Memory allocation failure\n", __func__);
+ goto mdfour_err;
+ }
+ sdescmd4->shash.tfm = md4;
+ sdescmd4->shash.flags = 0x0;
+
+ rc = crypto_shash_init(&sdescmd4->shash);
+ if (rc) {
+ cERROR(1, "%s: Could not init md4 shash\n", __func__);
+ goto mdfour_err;
+ }
+ crypto_shash_update(&sdescmd4->shash, link_str, link_len);
+ rc = crypto_shash_final(&sdescmd4->shash, md4_hash);
-void SMBencrypt(unsigned char *passwd, const unsigned char *c8,
- unsigned char *p24);
-void E_md4hash(const unsigned char *passwd, unsigned char *p16);
-static void SMBOWFencrypt(unsigned char passwd[16], const unsigned char *c8,
- unsigned char p24[24]);
-void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24);
+mdfour_err:
+ crypto_free_shash(md4);
+ kfree(sdescmd4);
+
+ return rc;
+}
+
+/* Does the des encryption from the NT or LM MD4 hash. */
+static void
+SMBOWFencrypt(unsigned char passwd[16], const unsigned char *c8,
+ unsigned char p24[24])
+{
+ unsigned char p21[21];
+
+ memset(p21, '\0', 21);
+
+ memcpy(p21, passwd, 16);
+ E_P24(p21, c8, p24);
+}
/*
This implements the X/Open SMB password encryption
@@ -118,9 +160,10 @@ _my_mbstowcs(__u16 *dst, const unsigned char *src, int len)
* Creates the MD4 Hash of the users password in NT UNICODE.
*/
-void
+int
E_md4hash(const unsigned char *passwd, unsigned char *p16)
{
+ int rc;
int len;
__u16 wpwd[129];
@@ -139,8 +182,10 @@ E_md4hash(const unsigned char *passwd, unsigned char *p16)
/* Calculate length in bytes */
len = _my_wcslen(wpwd) * sizeof(__u16);
- mdfour(p16, (unsigned char *) wpwd, len);
+ rc = mdfour(p16, (unsigned char *) wpwd, len);
memset(wpwd, 0, 129 * 2);
+
+ return rc;
}
#if 0 /* currently unused */
@@ -212,19 +257,6 @@ ntv2_owf_gen(const unsigned char owf[16], const char *user_n,
}
#endif
-/* Does the des encryption from the NT or LM MD4 hash. */
-static void
-SMBOWFencrypt(unsigned char passwd[16], const unsigned char *c8,
- unsigned char p24[24])
-{
- unsigned char p21[21];
-
- memset(p21, '\0', 21);
-
- memcpy(p21, passwd, 16);
- E_P24(p21, c8, p24);
-}
-
/* Does the des encryption from the FIRST 8 BYTES of the NT or LM MD4 hash. */
#if 0 /* currently unused */
static void
@@ -242,16 +274,21 @@ NTLMSSPOWFencrypt(unsigned char passwd[8],
#endif
/* Does the NT MD4 hash then des encryption. */
-
-void
+int
SMBNTencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24)
{
+ int rc;
unsigned char p21[21];
memset(p21, '\0', 21);
- E_md4hash(passwd, p21);
+ rc = E_md4hash(passwd, p21);
+ if (rc) {
+ cFYI(1, "%s Can't generate NT hash, error: %d", __func__, rc);
+ return rc;
+ }
SMBOWFencrypt(p21, c8, p24);
+ return rc;
}
diff --git a/fs/ntfs/mft.c b/fs/ntfs/mft.c
index b572b6727181..326e7475a22a 100644
--- a/fs/ntfs/mft.c
+++ b/fs/ntfs/mft.c
@@ -1,7 +1,7 @@
/**
* mft.c - NTFS kernel mft record operations. Part of the Linux-NTFS project.
*
- * Copyright (c) 2001-2006 Anton Altaparmakov
+ * Copyright (c) 2001-2011 Anton Altaparmakov and Tuxera Inc.
* Copyright (c) 2002 Richard Russon
*
* This program/include file is free software; you can redistribute it and/or
@@ -2576,6 +2576,8 @@ mft_rec_already_initialized:
flush_dcache_page(page);
SetPageUptodate(page);
if (base_ni) {
+ MFT_RECORD *m_tmp;
+
/*
* Setup the base mft record in the extent mft record. This
* completes initialization of the allocated extent mft record
@@ -2588,11 +2590,11 @@ mft_rec_already_initialized:
* attach it to the base inode @base_ni and map, pin, and lock
* its, i.e. the allocated, mft record.
*/
- m = map_extent_mft_record(base_ni, bit, &ni);
- if (IS_ERR(m)) {
+ m_tmp = map_extent_mft_record(base_ni, bit, &ni);
+ if (IS_ERR(m_tmp)) {
ntfs_error(vol->sb, "Failed to map allocated extent "
"mft record 0x%llx.", (long long)bit);
- err = PTR_ERR(m);
+ err = PTR_ERR(m_tmp);
/* Set the mft record itself not in use. */
m->flags &= cpu_to_le16(
~le16_to_cpu(MFT_RECORD_IN_USE));
@@ -2603,6 +2605,7 @@ mft_rec_already_initialized:
ntfs_unmap_page(page);
goto undo_mftbmp_alloc;
}
+ BUG_ON(m != m_tmp);
/*
* Make sure the allocated mft record is written out to disk.
* No need to set the inode dirty because the caller is going
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c
index b06ede1d0bed..f5e2a19e0f8e 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl.c
@@ -985,10 +985,22 @@ xfs_ioctl_setattr(
/*
* Extent size must be a multiple of the appropriate block
- * size, if set at all.
+ * size, if set at all. It must also be smaller than the
+ * maximum extent size supported by the filesystem.
+ *
+ * Also, for non-realtime files, limit the extent size hint to
+ * half the size of the AGs in the filesystem so alignment
+ * doesn't result in extents larger than an AG.
*/
if (fa->fsx_extsize != 0) {
- xfs_extlen_t size;
+ xfs_extlen_t size;
+ xfs_fsblock_t extsize_fsb;
+
+ extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);
+ if (extsize_fsb > MAXEXTLEN) {
+ code = XFS_ERROR(EINVAL);
+ goto error_return;
+ }
if (XFS_IS_REALTIME_INODE(ip) ||
((mask & FSX_XFLAGS) &&
@@ -997,6 +1009,10 @@ xfs_ioctl_setattr(
mp->m_sb.sb_blocklog;
} else {
size = mp->m_sb.sb_blocksize;
+ if (extsize_fsb > mp->m_sb.sb_agblocks / 2) {
+ code = XFS_ERROR(EINVAL);
+ goto error_return;
+ }
}
if (fa->fsx_extsize % size) {
diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c
index f8e854b4fde8..206a2815ced6 100644
--- a/fs/xfs/quota/xfs_qm.c
+++ b/fs/xfs/quota/xfs_qm.c
@@ -1863,12 +1863,14 @@ xfs_qm_dqreclaim_one(void)
xfs_dquot_t *dqpout;
xfs_dquot_t *dqp;
int restarts;
+ int startagain;
restarts = 0;
dqpout = NULL;
/* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */
-startagain:
+again:
+ startagain = 0;
mutex_lock(&xfs_Gqm->qm_dqfrlist_lock);
list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) {
@@ -1885,13 +1887,10 @@ startagain:
ASSERT(! (dqp->dq_flags & XFS_DQ_INACTIVE));
trace_xfs_dqreclaim_want(dqp);
-
- xfs_dqunlock(dqp);
- mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock);
- if (++restarts >= XFS_QM_RECLAIM_MAX_RESTARTS)
- return NULL;
XQM_STATS_INC(xqmstats.xs_qm_dqwants);
- goto startagain;
+ restarts++;
+ startagain = 1;
+ goto dqunlock;
}
/*
@@ -1906,23 +1905,20 @@ startagain:
ASSERT(list_empty(&dqp->q_mplist));
list_del_init(&dqp->q_freelist);
xfs_Gqm->qm_dqfrlist_cnt--;
- xfs_dqunlock(dqp);
dqpout = dqp;
XQM_STATS_INC(xqmstats.xs_qm_dqinact_reclaims);
- break;
+ goto dqunlock;
}
ASSERT(dqp->q_hash);
ASSERT(!list_empty(&dqp->q_mplist));
/*
- * Try to grab the flush lock. If this dquot is in the process of
- * getting flushed to disk, we don't want to reclaim it.
+ * Try to grab the flush lock. If this dquot is in the process
+ * of getting flushed to disk, we don't want to reclaim it.
*/
- if (!xfs_dqflock_nowait(dqp)) {
- xfs_dqunlock(dqp);
- continue;
- }
+ if (!xfs_dqflock_nowait(dqp))
+ goto dqunlock;
/*
* We have the flush lock so we know that this is not in the
@@ -1944,8 +1940,7 @@ startagain:
xfs_fs_cmn_err(CE_WARN, mp,
"xfs_qm_dqreclaim: dquot %p flush failed", dqp);
}
- xfs_dqunlock(dqp); /* dqflush unlocks dqflock */
- continue;
+ goto dqunlock;
}
/*
@@ -1967,13 +1962,8 @@ startagain:
*/
if (!mutex_trylock(&mp->m_quotainfo->qi_dqlist_lock)) {
restarts++;
- mutex_unlock(&dqp->q_hash->qh_lock);
- xfs_dqfunlock(dqp);
- xfs_dqunlock(dqp);
- mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock);
- if (restarts++ >= XFS_QM_RECLAIM_MAX_RESTARTS)
- return NULL;
- goto startagain;
+ startagain = 1;
+ goto qhunlock;
}
ASSERT(dqp->q_nrefs == 0);
@@ -1986,14 +1976,20 @@ startagain:
xfs_Gqm->qm_dqfrlist_cnt--;
dqpout = dqp;
mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock);
+qhunlock:
mutex_unlock(&dqp->q_hash->qh_lock);
dqfunlock:
xfs_dqfunlock(dqp);
+dqunlock:
xfs_dqunlock(dqp);
if (dqpout)
break;
if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS)
- return NULL;
+ break;
+ if (startagain) {
+ mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock);
+ goto again;
+ }
}
mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock);
return dqpout;
diff --git a/fs/xfs/xfs_alloc.h b/fs/xfs/xfs_alloc.h
index 0ab56b32c7eb..d0b3bc72005b 100644
--- a/fs/xfs/xfs_alloc.h
+++ b/fs/xfs/xfs_alloc.h
@@ -75,6 +75,22 @@ typedef unsigned int xfs_alloctype_t;
#define XFS_ALLOC_SET_ASIDE(mp) (4 + ((mp)->m_sb.sb_agcount * 4))
/*
+ * When deciding how much space to allocate out of an AG, we limit the
+ * allocation maximum size to the size the AG. However, we cannot use all the
+ * blocks in the AG - some are permanently used by metadata. These
+ * blocks are generally:
+ * - the AG superblock, AGF, AGI and AGFL
+ * - the AGF (bno and cnt) and AGI btree root blocks
+ * - 4 blocks on the AGFL according to XFS_ALLOC_SET_ASIDE() limits
+ *
+ * The AG headers are sector sized, so the amount of space they take up is
+ * dependent on filesystem geometry. The others are all single blocks.
+ */
+#define XFS_ALLOC_AG_MAX_USABLE(mp) \
+ ((mp)->m_sb.sb_agblocks - XFS_BB_TO_FSB(mp, XFS_FSS_TO_BB(mp, 4)) - 7)
+
+
+/*
* Argument structure for xfs_alloc routines.
* This is turned into a structure to avoid having 20 arguments passed
* down several levels of the stack.
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 4111cd3966c7..dc3afd7739ff 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -1038,17 +1038,34 @@ xfs_bmap_add_extent_delay_real(
* Filling in the middle part of a previous delayed allocation.
* Contiguity is impossible here.
* This case is avoided almost all the time.
+ *
+ * We start with a delayed allocation:
+ *
+ * +ddddddddddddddddddddddddddddddddddddddddddddddddddddddd+
+ * PREV @ idx
+ *
+ * and we are allocating:
+ * +rrrrrrrrrrrrrrrrr+
+ * new
+ *
+ * and we set it up for insertion as:
+ * +ddddddddddddddddddd+rrrrrrrrrrrrrrrrr+ddddddddddddddddd+
+ * new
+ * PREV @ idx LEFT RIGHT
+ * inserted at idx + 1
*/
temp = new->br_startoff - PREV.br_startoff;
- trace_xfs_bmap_pre_update(ip, idx, 0, _THIS_IP_);
- xfs_bmbt_set_blockcount(ep, temp);
- r[0] = *new;
- r[1].br_state = PREV.br_state;
- r[1].br_startblock = 0;
- r[1].br_startoff = new_endoff;
temp2 = PREV.br_startoff + PREV.br_blockcount - new_endoff;
- r[1].br_blockcount = temp2;
- xfs_iext_insert(ip, idx + 1, 2, &r[0], state);
+ trace_xfs_bmap_pre_update(ip, idx, 0, _THIS_IP_);
+ xfs_bmbt_set_blockcount(ep, temp); /* truncate PREV */
+ LEFT = *new;
+ RIGHT.br_state = PREV.br_state;
+ RIGHT.br_startblock = nullstartblock(
+ (int)xfs_bmap_worst_indlen(ip, temp2));
+ RIGHT.br_startoff = new_endoff;
+ RIGHT.br_blockcount = temp2;
+ /* insert LEFT (r[0]) and RIGHT (r[1]) at the same time */
+ xfs_iext_insert(ip, idx + 1, 2, &LEFT, state);
ip->i_df.if_lastex = idx + 1;
ip->i_d.di_nextents++;
if (cur == NULL)
@@ -2430,7 +2447,7 @@ xfs_bmap_btalloc_nullfb(
startag = ag = 0;
pag = xfs_perag_get(mp, ag);
- while (*blen < ap->alen) {
+ while (*blen < args->maxlen) {
if (!pag->pagf_init) {
error = xfs_alloc_pagf_init(mp, args->tp, ag,
XFS_ALLOC_FLAG_TRYLOCK);
@@ -2452,7 +2469,7 @@ xfs_bmap_btalloc_nullfb(
notinit = 1;
if (xfs_inode_is_filestream(ap->ip)) {
- if (*blen >= ap->alen)
+ if (*blen >= args->maxlen)
break;
if (ap->userdata) {
@@ -2498,14 +2515,14 @@ xfs_bmap_btalloc_nullfb(
* If the best seen length is less than the request
* length, use the best as the minimum.
*/
- else if (*blen < ap->alen)
+ else if (*blen < args->maxlen)
args->minlen = *blen;
/*
- * Otherwise we've seen an extent as big as alen,
+ * Otherwise we've seen an extent as big as maxlen,
* use that as the minimum.
*/
else
- args->minlen = ap->alen;
+ args->minlen = args->maxlen;
/*
* set the failure fallback case to look in the selected
@@ -2573,7 +2590,9 @@ xfs_bmap_btalloc(
args.tp = ap->tp;
args.mp = mp;
args.fsbno = ap->rval;
- args.maxlen = MIN(ap->alen, mp->m_sb.sb_agblocks);
+
+ /* Trim the allocation back to the maximum an AG can fit. */
+ args.maxlen = MIN(ap->alen, XFS_ALLOC_AG_MAX_USABLE(mp));
args.firstblock = ap->firstblock;
blen = 0;
if (nullfb) {
@@ -2621,7 +2640,7 @@ xfs_bmap_btalloc(
/*
* Adjust for alignment
*/
- if (blen > args.alignment && blen <= ap->alen)
+ if (blen > args.alignment && blen <= args.maxlen)
args.minlen = blen - args.alignment;
args.minalignslop = 0;
} else {
@@ -2640,7 +2659,7 @@ xfs_bmap_btalloc(
* of minlen+alignment+slop doesn't go up
* between the calls.
*/
- if (blen > mp->m_dalign && blen <= ap->alen)
+ if (blen > mp->m_dalign && blen <= args.maxlen)
nextminlen = blen - mp->m_dalign;
else
nextminlen = args.minlen;
@@ -4485,6 +4504,16 @@ xfs_bmapi(
/* Figure out the extent size, adjust alen */
extsz = xfs_get_extsz_hint(ip);
if (extsz) {
+ /*
+ * make sure we don't exceed a single
+ * extent length when we align the
+ * extent by reducing length we are
+ * going to allocate by the maximum
+ * amount extent size aligment may
+ * require.
+ */
+ alen = XFS_FILBLKS_MIN(len,
+ MAXEXTLEN - (2 * extsz - 1));
error = xfs_bmap_extsize_align(mp,
&got, &prev, extsz,
rt, eof,
diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
index 98c6f73b6752..6f8c21ce0d6d 100644
--- a/fs/xfs/xfs_buf_item.c
+++ b/fs/xfs/xfs_buf_item.c
@@ -427,13 +427,15 @@ xfs_buf_item_unpin(
if (remove) {
/*
- * We have to remove the log item from the transaction
- * as we are about to release our reference to the
- * buffer. If we don't, the unlock that occurs later
- * in xfs_trans_uncommit() will ry to reference the
+ * If we are in a transaction context, we have to
+ * remove the log item from the transaction as we are
+ * about to release our reference to the buffer. If we
+ * don't, the unlock that occurs later in
+ * xfs_trans_uncommit() will try to reference the
* buffer which we no longer have a hold on.
*/
- xfs_trans_del_item(lip);
+ if (lip->li_desc)
+ xfs_trans_del_item(lip);
/*
* Since the transaction no longer refers to the buffer,
diff --git a/fs/xfs/xfs_extfree_item.c b/fs/xfs/xfs_extfree_item.c
index 75f2ef60e579..d22e62623437 100644
--- a/fs/xfs/xfs_extfree_item.c
+++ b/fs/xfs/xfs_extfree_item.c
@@ -138,7 +138,8 @@ xfs_efi_item_unpin(
if (remove) {
ASSERT(!(lip->li_flags & XFS_LI_IN_AIL));
- xfs_trans_del_item(lip);
+ if (lip->li_desc)
+ xfs_trans_del_item(lip);
xfs_efi_item_free(efip);
return;
}
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 55582bd66659..8a0f044750c3 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -337,7 +337,12 @@ xfs_iomap_prealloc_size(
int shift = 0;
int64_t freesp;
- alloc_blocks = XFS_B_TO_FSB(mp, ip->i_size);
+ /*
+ * rounddown_pow_of_two() returns an undefined result
+ * if we pass in alloc_blocks = 0. Hence the "+ 1" to
+ * ensure we always pass in a non-zero value.
+ */
+ alloc_blocks = XFS_B_TO_FSB(mp, ip->i_size) + 1;
alloc_blocks = XFS_FILEOFF_MIN(MAXEXTLEN,
rounddown_pow_of_two(alloc_blocks));
diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h
index 916eb7db14d9..3bd3291ef8d2 100644
--- a/fs/xfs/xfs_log.h
+++ b/fs/xfs/xfs_log.h
@@ -191,7 +191,7 @@ void xfs_log_ticket_put(struct xlog_ticket *ticket);
xlog_tid_t xfs_log_get_trans_ident(struct xfs_trans *tp);
-int xfs_log_commit_cil(struct xfs_mount *mp, struct xfs_trans *tp,
+void xfs_log_commit_cil(struct xfs_mount *mp, struct xfs_trans *tp,
struct xfs_log_vec *log_vector,
xfs_lsn_t *commit_lsn, int flags);
bool xfs_log_item_in_current_chkpt(struct xfs_log_item *lip);
diff --git a/fs/xfs/xfs_log_cil.c b/fs/xfs/xfs_log_cil.c
index 9dc8125d04e5..9ca59be08977 100644
--- a/fs/xfs/xfs_log_cil.c
+++ b/fs/xfs/xfs_log_cil.c
@@ -543,7 +543,7 @@ xlog_cil_push(
error = xlog_write(log, &lvhdr, tic, &ctx->start_lsn, NULL, 0);
if (error)
- goto out_abort;
+ goto out_abort_free_ticket;
/*
* now that we've written the checkpoint into the log, strictly
@@ -569,8 +569,9 @@ restart:
}
spin_unlock(&cil->xc_cil_lock);
+ /* xfs_log_done always frees the ticket on error. */
commit_lsn = xfs_log_done(log->l_mp, tic, &commit_iclog, 0);
- if (error || commit_lsn == -1)
+ if (commit_lsn == -1)
goto out_abort;
/* attach all the transactions w/ busy extents to iclog */
@@ -600,6 +601,8 @@ out_free_ticket:
kmem_free(new_ctx);
return 0;
+out_abort_free_ticket:
+ xfs_log_ticket_put(tic);
out_abort:
xlog_cil_committed(ctx, XFS_LI_ABORTED);
return XFS_ERROR(EIO);
@@ -622,7 +625,7 @@ out_abort:
* background commit, returns without it held once background commits are
* allowed again.
*/
-int
+void
xfs_log_commit_cil(
struct xfs_mount *mp,
struct xfs_trans *tp,
@@ -637,11 +640,6 @@ xfs_log_commit_cil(
if (flags & XFS_TRANS_RELEASE_LOG_RES)
log_flags = XFS_LOG_REL_PERM_RESERV;
- if (XLOG_FORCED_SHUTDOWN(log)) {
- xlog_cil_free_logvec(log_vector);
- return XFS_ERROR(EIO);
- }
-
/*
* do all the hard work of formatting items (including memory
* allocation) outside the CIL context lock. This prevents stalling CIL
@@ -701,7 +699,6 @@ xfs_log_commit_cil(
*/
if (push)
xlog_cil_push(log, 0);
- return 0;
}
/*
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index 33dbc4e0ad62..76922793f64f 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -1446,6 +1446,14 @@ xfs_log_item_batch_insert(
* Bulk operation version of xfs_trans_committed that takes a log vector of
* items to insert into the AIL. This uses bulk AIL insertion techniques to
* minimise lock traffic.
+ *
+ * If we are called with the aborted flag set, it is because a log write during
+ * a CIL checkpoint commit has failed. In this case, all the items in the
+ * checkpoint have already gone through IOP_COMMITED and IOP_UNLOCK, which
+ * means that checkpoint commit abort handling is treated exactly the same
+ * as an iclog write error even though we haven't started any IO yet. Hence in
+ * this case all we need to do is IOP_COMMITTED processing, followed by an
+ * IOP_UNPIN(aborted) call.
*/
void
xfs_trans_committed_bulk(
@@ -1472,6 +1480,16 @@ xfs_trans_committed_bulk(
if (XFS_LSN_CMP(item_lsn, (xfs_lsn_t)-1) == 0)
continue;
+ /*
+ * if we are aborting the operation, no point in inserting the
+ * object into the AIL as we are in a shutdown situation.
+ */
+ if (aborted) {
+ ASSERT(XFS_FORCED_SHUTDOWN(ailp->xa_mount));
+ IOP_UNPIN(lip, 1);
+ continue;
+ }
+
if (item_lsn != commit_lsn) {
/*
@@ -1503,20 +1521,24 @@ xfs_trans_committed_bulk(
}
/*
- * Called from the trans_commit code when we notice that
- * the filesystem is in the middle of a forced shutdown.
+ * Called from the trans_commit code when we notice that the filesystem is in
+ * the middle of a forced shutdown.
+ *
+ * When we are called here, we have already pinned all the items in the
+ * transaction. However, neither IOP_COMMITTING or IOP_UNLOCK has been called
+ * so we can simply walk the items in the transaction, unpin them with an abort
+ * flag and then free the items. Note that unpinning the items can result in
+ * them being freed immediately, so we need to use a safe list traversal method
+ * here.
*/
STATIC void
xfs_trans_uncommit(
struct xfs_trans *tp,
uint flags)
{
- struct xfs_log_item_desc *lidp;
+ struct xfs_log_item_desc *lidp, *n;
- list_for_each_entry(lidp, &tp->t_items, lid_trans) {
- /*
- * Unpin all but those that aren't dirty.
- */
+ list_for_each_entry_safe(lidp, n, &tp->t_items, lid_trans) {
if (lidp->lid_flags & XFS_LID_DIRTY)
IOP_UNPIN(lidp->lid_item, 1);
}
@@ -1733,7 +1755,6 @@ xfs_trans_commit_cil(
int flags)
{
struct xfs_log_vec *log_vector;
- int error;
/*
* Get each log item to allocate a vector structure for
@@ -1744,9 +1765,7 @@ xfs_trans_commit_cil(
if (!log_vector)
return ENOMEM;
- error = xfs_log_commit_cil(mp, tp, log_vector, commit_lsn, flags);
- if (error)
- return error;
+ xfs_log_commit_cil(mp, tp, log_vector, commit_lsn, flags);
current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS);
xfs_trans_free(tp);
generated by cgit (git 2.34.1) at 2025-06-08 08:21:39 +0000