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authorDavid Brownell <david-b@pacbell.net>2006-08-30 14:12:48 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2006-09-25 21:08:37 -0700
commit047bda36150d11422b2c7bacca1df324c909c0b3 (patch)
tree3ec9e87c36f26bb945bfa8c8c4beb4c5cdfc8771 /net/lapb/lapb_in.c
parent4fc0840006bf3df69dcf92397fdcaf85a542f939 (diff)
PM: update docs for writing .../power/state
Updates to match current code: - Make writes to the /sys/devices/.../power/state files fail cleanly if the device requires the irqs-off call variants. - Fix comments describing the /sys/devices/.../power/state file writes to match the code; the last several releases have invalidated the previous text. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net/lapb/lapb_in.c')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-13 21:20:47 +0000
fssmb.c182
-rw-r--r--fs/cifs/connect.c5
-rw-r--r--fs/cifs/dir.c72
-rw-r--r--fs/cifs/file.c301
-rw-r--r--fs/cifs/inode.c265
-rw-r--r--fs/cifs/ioctl.c2
-rw-r--r--fs/cifs/link.c339
-rw-r--r--fs/cifs/misc.c74
-rw-r--r--fs/cifs/netmisc.c9
-rw-r--r--fs/cifs/readdir.c2
-rw-r--r--fs/cifs/smb1ops.c146
-rw-r--r--fs/cifs/smb2glob.h3
-rw-r--r--fs/cifs/smb2misc.c18
-rw-r--r--fs/cifs/smb2ops.c30
-rw-r--r--fs/cifs/smb2pdu.c30
-rw-r--r--fs/cifs/smb2pdu.h8
-rw-r--r--fs/cifs/smb2proto.h3
-rw-r--r--fs/cifs/transport.c29
-rw-r--r--fs/cifs/xattr.c64
25 files changed, 1212 insertions, 768 deletions
diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c
index 0227b45ef00..15e9505aa35 100644
--- a/fs/cifs/cifs_unicode.c
+++ b/fs/cifs/cifs_unicode.c
@@ -290,7 +290,8 @@ int
cifsConvertToUTF16(__le16 *target, const char *source, int srclen,
const struct nls_table *cp, int mapChars)
{
- int i, j, charlen;
+ int i, charlen;
+ int j = 0;
char src_char;
__le16 dst_char;
wchar_t tmp;
@@ -298,12 +299,11 @@ cifsConvertToUTF16(__le16 *target, const char *source, int srclen,
if (!mapChars)
return cifs_strtoUTF16(target, source, PATH_MAX, cp);
- for (i = 0, j = 0; i < srclen; j++) {
+ for (i = 0; i < srclen; j++) {
src_char = source[i];
charlen = 1;
switch (src_char) {
case 0:
- put_unaligned(0, &target[j]);
goto ctoUTF16_out;
case ':':
dst_char = cpu_to_le16(UNI_COLON);
@@ -350,6 +350,7 @@ cifsConvertToUTF16(__le16 *target, const char *source, int srclen,
}
ctoUTF16_out:
+ put_unaligned(0, &target[j]); /* Null terminate target unicode string */
return j;
}
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 51f5e0ee723..7ff866dbb89 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -865,8 +865,8 @@ static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd,
return rc;
}
-static struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb,
- __u16 fid, u32 *pacllen)
+struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb,
+ const struct cifs_fid *cifsfid, u32 *pacllen)
{
struct cifs_ntsd *pntsd = NULL;
unsigned int xid;
@@ -877,7 +877,8 @@ static struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb,
return ERR_CAST(tlink);
xid = get_xid();
- rc = CIFSSMBGetCIFSACL(xid, tlink_tcon(tlink), fid, &pntsd, pacllen);
+ rc = CIFSSMBGetCIFSACL(xid, tlink_tcon(tlink), cifsfid->netfid, &pntsd,
+ pacllen);
free_xid(xid);
cifs_put_tlink(tlink);
@@ -895,9 +896,10 @@ static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb,
int oplock = 0;
unsigned int xid;
int rc, create_options = 0;
- __u16 fid;
struct cifs_tcon *tcon;
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
if (IS_ERR(tlink))
return ERR_CAST(tlink);
@@ -908,12 +910,19 @@ static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb,
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;
- rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, READ_CONTROL,
- create_options, &fid, &oplock, NULL, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = READ_CONTROL;
+ oparms.create_options = create_options;
+ oparms.disposition = FILE_OPEN;
+ oparms.path = path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (!rc) {
- rc = CIFSSMBGetCIFSACL(xid, tcon, fid, &pntsd, pacllen);
- CIFSSMBClose(xid, tcon, fid);
+ rc = CIFSSMBGetCIFSACL(xid, tcon, fid.netfid, &pntsd, pacllen);
+ CIFSSMBClose(xid, tcon, fid.netfid);
}
cifs_put_tlink(tlink);
@@ -938,7 +947,7 @@ struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *cifs_sb,
if (!open_file)
return get_cifs_acl_by_path(cifs_sb, path, pacllen);
- pntsd = get_cifs_acl_by_fid(cifs_sb, open_file->fid.netfid, pacllen);
+ pntsd = get_cifs_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
cifsFileInfo_put(open_file);
return pntsd;
}
@@ -950,10 +959,11 @@ int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
int oplock = 0;
unsigned int xid;
int rc, access_flags, create_options = 0;
- __u16 fid;
struct cifs_tcon *tcon;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
if (IS_ERR(tlink))
return PTR_ERR(tlink);
@@ -969,18 +979,25 @@ int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
else
access_flags = WRITE_DAC;
- rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, access_flags,
- create_options, &fid, &oplock, NULL, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = access_flags;
+ oparms.create_options = create_options;
+ oparms.disposition = FILE_OPEN;
+ oparms.path = path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (rc) {
cifs_dbg(VFS, "Unable to open file to set ACL\n");
goto out;
}
- rc = CIFSSMBSetCIFSACL(xid, tcon, fid, pnntsd, acllen, aclflag);
+ rc = CIFSSMBSetCIFSACL(xid, tcon, fid.netfid, pnntsd, acllen, aclflag);
cifs_dbg(NOISY, "SetCIFSACL rc = %d\n", rc);
- CIFSSMBClose(xid, tcon, fid);
+ CIFSSMBClose(xid, tcon, fid.netfid);
out:
free_xid(xid);
cifs_put_tlink(tlink);
@@ -990,19 +1007,31 @@ out:
/* Translate the CIFS ACL (simlar to NTFS ACL) for a file into mode bits */
int
cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
- struct inode *inode, const char *path, const __u16 *pfid)
+ struct inode *inode, const char *path,
+ const struct cifs_fid *pfid)
{
struct cifs_ntsd *pntsd = NULL;
u32 acllen = 0;
int rc = 0;
+ struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
+ struct cifs_tcon *tcon;
cifs_dbg(NOISY, "converting ACL to mode for %s\n", path);
- if (pfid)
- pntsd = get_cifs_acl_by_fid(cifs_sb, *pfid, &acllen);
- else
- pntsd = get_cifs_acl(cifs_sb, inode, path, &acllen);
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
+ tcon = tlink_tcon(tlink);
+ if (pfid && (tcon->ses->server->ops->get_acl_by_fid))
+ pntsd = tcon->ses->server->ops->get_acl_by_fid(cifs_sb, pfid,
+ &acllen);
+ else if (tcon->ses->server->ops->get_acl)
+ pntsd = tcon->ses->server->ops->get_acl(cifs_sb, inode, path,
+ &acllen);
+ else {
+ cifs_put_tlink(tlink);
+ return -EOPNOTSUPP;
+ }
/* if we can retrieve the ACL, now parse Access Control Entries, ACEs */
if (IS_ERR(pntsd)) {
rc = PTR_ERR(pntsd);
@@ -1014,6 +1043,8 @@ cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
cifs_dbg(VFS, "parse sec desc failed rc = %d\n", rc);
}
+ cifs_put_tlink(tlink);
+
return rc;
}
@@ -1027,15 +1058,30 @@ id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 nmode,
__u32 secdesclen = 0;
struct cifs_ntsd *pntsd = NULL; /* acl obtained from server */
struct cifs_ntsd *pnntsd = NULL; /* modified acl to be sent to server */
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
+ struct cifs_tcon *tcon;
+
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
+ tcon = tlink_tcon(tlink);
cifs_dbg(NOISY, "set ACL from mode for %s\n", path);
/* Get the security descriptor */
- pntsd = get_cifs_acl(CIFS_SB(inode->i_sb), inode, path, &secdesclen);
+
+ if (tcon->ses->server->ops->get_acl == NULL) {
+ cifs_put_tlink(tlink);
+ return -EOPNOTSUPP;
+ }
+
+ pntsd = tcon->ses->server->ops->get_acl(cifs_sb, inode, path,
+ &secdesclen);
if (IS_ERR(pntsd)) {
rc = PTR_ERR(pntsd);
cifs_dbg(VFS, "%s: error %d getting sec desc\n", __func__, rc);
- goto out;
+ cifs_put_tlink(tlink);
+ return rc;
}
/*
@@ -1048,6 +1094,7 @@ id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 nmode,
pnntsd = kmalloc(secdesclen, GFP_KERNEL);
if (!pnntsd) {
kfree(pntsd);
+ cifs_put_tlink(tlink);
return -ENOMEM;
}
@@ -1056,14 +1103,18 @@ id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 nmode,
cifs_dbg(NOISY, "build_sec_desc rc: %d\n", rc);
+ if (tcon->ses->server->ops->set_acl == NULL)
+ rc = -EOPNOTSUPP;
+
if (!rc) {
/* Set the security descriptor */
- rc = set_cifs_acl(pnntsd, secdesclen, inode, path, aclflag);
+ rc = tcon->ses->server->ops->set_acl(pnntsd, secdesclen, inode,
+ path, aclflag);
cifs_dbg(NOISY, "set_cifs_acl rc: %d\n", rc);
}
+ cifs_put_tlink(tlink);
kfree(pnntsd);
kfree(pntsd);
-out:
return rc;
}
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 849f6132b32..88839806742 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -87,10 +87,6 @@ extern mempool_t *cifs_mid_poolp;
struct workqueue_struct *cifsiod_wq;
-#ifdef CONFIG_CIFS_SMB2
-__u8 cifs_client_guid[SMB2_CLIENT_GUID_SIZE];
-#endif
-
/*
* Bumps refcount for cifs super block.
* Note that it should be only called if a referece to VFS super block is
@@ -251,8 +247,9 @@ cifs_alloc_inode(struct super_block *sb)
* server, can not assume caching of file data or metadata.
*/
cifs_set_oplock_level(cifs_inode, 0);
- cifs_inode->delete_pending = false;
- cifs_inode->invalid_mapping = false;
+ cifs_inode->flags = 0;
+ spin_lock_init(&cifs_inode->writers_lock);
+ cifs_inode->writers = 0;
cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */
cifs_inode->server_eof = 0;
cifs_inode->uniqueid = 0;
@@ -286,7 +283,7 @@ cifs_destroy_inode(struct inode *inode)
static void
cifs_evict_inode(struct inode *inode)
{
- truncate_inode_pages(&inode->i_data, 0);
+ truncate_inode_pages_final(&inode->i_data);
clear_inode(inode);
cifs_fscache_release_inode_cookie(inode);
}
@@ -297,7 +294,7 @@ cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server)
struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr;
struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr;
- seq_printf(s, ",addr=");
+ seq_puts(s, ",addr=");
switch (server->dstaddr.ss_family) {
case AF_INET:
@@ -309,7 +306,7 @@ cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server)
seq_printf(s, "%%%u", sa6->sin6_scope_id);
break;
default:
- seq_printf(s, "(unknown)");
+ seq_puts(s, "(unknown)");
}
}
@@ -319,45 +316,45 @@ cifs_show_security(struct seq_file *s, struct cifs_ses *ses)
if (ses->sectype == Unspecified)
return;
- seq_printf(s, ",sec=");
+ seq_puts(s, ",sec=");
switch (ses->sectype) {
case LANMAN:
- seq_printf(s, "lanman");
+ seq_puts(s, "lanman");
break;
case NTLMv2:
- seq_printf(s, "ntlmv2");
+ seq_puts(s, "ntlmv2");
break;
case NTLM:
- seq_printf(s, "ntlm");
+ seq_puts(s, "ntlm");
break;
case Kerberos:
- seq_printf(s, "krb5");
+ seq_puts(s, "krb5");
break;
case RawNTLMSSP:
- seq_printf(s, "ntlmssp");
+ seq_puts(s, "ntlmssp");
break;
default:
/* shouldn't ever happen */
- seq_printf(s, "unknown");
+ seq_puts(s, "unknown");
break;
}
if (ses->sign)
- seq_printf(s, "i");
+ seq_puts(s, "i");
}
static void
cifs_show_cache_flavor(struct seq_file *s, struct cifs_sb_info *cifs_sb)
{
- seq_printf(s, ",cache=");
+ seq_puts(s, ",cache=");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO)
- seq_printf(s, "strict");
+ seq_puts(s, "strict");
else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
- seq_printf(s, "none");
+ seq_puts(s, "none");
else
- seq_printf(s, "loose");
+ seq_puts(s, "loose");
}
static void
@@ -390,7 +387,7 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
cifs_show_cache_flavor(s, cifs_sb);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER)
- seq_printf(s, ",multiuser");
+ seq_puts(s, ",multiuser");
else if (tcon->ses->user_name)
seq_printf(s, ",username=%s", tcon->ses->user_name);
@@ -416,16 +413,16 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
seq_printf(s, ",uid=%u",
from_kuid_munged(&init_user_ns, cifs_sb->mnt_uid));
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
- seq_printf(s, ",forceuid");
+ seq_puts(s, ",forceuid");
else
- seq_printf(s, ",noforceuid");
+ seq_puts(s, ",noforceuid");
seq_printf(s, ",gid=%u",
from_kgid_munged(&init_user_ns, cifs_sb->mnt_gid));
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
- seq_printf(s, ",forcegid");
+ seq_puts(s, ",forcegid");
else
- seq_printf(s, ",noforcegid");
+ seq_puts(s, ",noforcegid");
cifs_show_address(s, tcon->ses->server);
@@ -437,47 +434,47 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
cifs_show_nls(s, cifs_sb->local_nls);
if (tcon->seal)
- seq_printf(s, ",seal");
+ seq_puts(s, ",seal");
if (tcon->nocase)
- seq_printf(s, ",nocase");
+ seq_puts(s, ",nocase");
if (tcon->retry)
- seq_printf(s, ",hard");
+ seq_puts(s, ",hard");
if (tcon->unix_ext)
- seq_printf(s, ",unix");
+ seq_puts(s, ",unix");
else
- seq_printf(s, ",nounix");
+ seq_puts(s, ",nounix");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
- seq_printf(s, ",posixpaths");
+ seq_puts(s, ",posixpaths");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)
- seq_printf(s, ",setuids");
+ seq_puts(s, ",setuids");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
- seq_printf(s, ",serverino");
+ seq_puts(s, ",serverino");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
- seq_printf(s, ",rwpidforward");
+ seq_puts(s, ",rwpidforward");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL)
- seq_printf(s, ",forcemand");
+ seq_puts(s, ",forcemand");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
- seq_printf(s, ",nouser_xattr");
+ seq_puts(s, ",nouser_xattr");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR)
- seq_printf(s, ",mapchars");
+ seq_puts(s, ",mapchars");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)
- seq_printf(s, ",sfu");
+ seq_puts(s, ",sfu");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
- seq_printf(s, ",nobrl");
+ seq_puts(s, ",nobrl");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
- seq_printf(s, ",cifsacl");
+ seq_puts(s, ",cifsacl");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
- seq_printf(s, ",dynperm");
+ seq_puts(s, ",dynperm");
if (root->d_sb->s_flags & MS_POSIXACL)
- seq_printf(s, ",acl");
+ seq_puts(s, ",acl");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
- seq_printf(s, ",mfsymlinks");
+ seq_puts(s, ",mfsymlinks");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE)
- seq_printf(s, ",fsc");
+ seq_puts(s, ",fsc");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC)
- seq_printf(s, ",nostrictsync");
+ seq_puts(s, ",nostrictsync");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
- seq_printf(s, ",noperm");
+ seq_puts(s, ",noperm");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID)
seq_printf(s, ",backupuid=%u",
from_kuid_munged(&init_user_ns,
@@ -541,6 +538,7 @@ static int cifs_show_stats(struct seq_file *s, struct dentry *root)
static int cifs_remount(struct super_block *sb, int *flags, char *data)
{
+ sync_filesystem(sb);
*flags |= MS_NODIRATIME;
return 0;
}
@@ -727,23 +725,42 @@ out_nls:
goto out;
}
-static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos)
+static ssize_t
+cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter)
{
+ ssize_t rc;
struct inode *inode = file_inode(iocb->ki_filp);
+
+ rc = cifs_revalidate_mapping(inode);
+ if (rc)
+ return rc;
+
+ return generic_file_read_iter(iocb, iter);
+}
+
+static ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
+{
+ struct inode *inode = file_inode(iocb->ki_filp);
+ struct cifsInodeInfo *cinode = CIFS_I(inode);
ssize_t written;
int rc;
- written = generic_file_aio_write(iocb, iov, nr_segs, pos);
+ written = cifs_get_writer(cinode);
+ if (written)
+ return written;
+
+ written = generic_file_write_iter(iocb, from);
if (CIFS_CACHE_WRITE(CIFS_I(inode)))
- return written;
+ goto out;
rc = filemap_fdatawrite(inode->i_mapping);
if (rc)
- cifs_dbg(FYI, "cifs_file_aio_write: %d rc on %p inode\n",
+ cifs_dbg(FYI, "cifs_file_write_iter: %d rc on %p inode\n",
rc, inode);
+out:
+ cifs_put_writer(cinode);
return written;
}
@@ -849,7 +866,6 @@ const struct inode_operations cifs_file_inode_ops = {
/* revalidate:cifs_revalidate, */
.setattr = cifs_setattr,
.getattr = cifs_getattr, /* do we need this anymore? */
- .rename = cifs_rename,
.permission = cifs_permission,
#ifdef CONFIG_CIFS_XATTR
.setxattr = cifs_setxattr,
@@ -876,10 +892,10 @@ const struct inode_operations cifs_symlink_inode_ops = {
};
const struct file_operations cifs_file_ops = {
- .read = do_sync_read,
- .write = do_sync_write,
- .aio_read = generic_file_aio_read,
- .aio_write = cifs_file_aio_write,
+ .read = new_sync_read,
+ .write = new_sync_write,
+ .read_iter = cifs_loose_read_iter,
+ .write_iter = cifs_file_write_iter,
.open = cifs_open,
.release = cifs_close,
.lock = cifs_lock,
@@ -895,10 +911,10 @@ const struct file_operations cifs_file_ops = {
};
const struct file_operations cifs_file_strict_ops = {
- .read = do_sync_read,
- .write = do_sync_write,
- .aio_read = cifs_strict_readv,
- .aio_write = cifs_strict_writev,
+ .read = new_sync_read,
+ .write = new_sync_write,
+ .read_iter = cifs_strict_readv,
+ .write_iter = cifs_strict_writev,
.open = cifs_open,
.release = cifs_close,
.lock = cifs_lock,
@@ -915,10 +931,10 @@ const struct file_operations cifs_file_strict_ops = {
const struct file_operations cifs_file_direct_ops = {
/* BB reevaluate whether they can be done with directio, no cache */
- .read = do_sync_read,
- .write = do_sync_write,
- .aio_read = cifs_user_readv,
- .aio_write = cifs_user_writev,
+ .read = new_sync_read,
+ .write = new_sync_write,
+ .read_iter = cifs_user_readv,
+ .write_iter = cifs_user_writev,
.open = cifs_open,
.release = cifs_close,
.lock = cifs_lock,
@@ -934,10 +950,10 @@ const struct file_operations cifs_file_direct_ops = {
};
const struct file_operations cifs_file_nobrl_ops = {
- .read = do_sync_read,
- .write = do_sync_write,
- .aio_read = generic_file_aio_read,
- .aio_write = cifs_file_aio_write,
+ .read = new_sync_read,
+ .write = new_sync_write,
+ .read_iter = cifs_loose_read_iter,
+ .write_iter = cifs_file_write_iter,
.open = cifs_open,
.release = cifs_close,
.fsync = cifs_fsync,
@@ -952,10 +968,10 @@ const struct file_operations cifs_file_nobrl_ops = {
};
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_strict_writev,
+ .read = new_sync_read,
+ .write = new_sync_write,
+ .read_iter = cifs_strict_readv,
+ .write_iter = cifs_strict_writev,
.open = cifs_open,
.release = cifs_close,
.fsync = cifs_strict_fsync,
@@ -971,10 +987,10 @@ const struct file_operations cifs_file_strict_nobrl_ops = {
const struct file_operations cifs_file_direct_nobrl_ops = {
/* BB reevaluate whether they can be done with directio, no cache */
- .read = do_sync_read,
- .write = do_sync_write,
- .aio_read = cifs_user_readv,
- .aio_write = cifs_user_writev,
+ .read = new_sync_read,
+ .write = new_sync_write,
+ .read_iter = cifs_user_readv,
+ .write_iter = cifs_user_writev,
.open = cifs_open,
.release = cifs_close,
.fsync = cifs_fsync,
@@ -1005,7 +1021,7 @@ cifs_init_once(void *inode)
init_rwsem(&cifsi->lock_sem);
}
-static int
+static int __init
cifs_init_inodecache(void)
{
cifs_inode_cachep = kmem_cache_create("cifs_inode_cache",
@@ -1180,10 +1196,6 @@ init_cifs(void)
spin_lock_init(&cifs_file_list_lock);
spin_lock_init(&GlobalMid_Lock);
-#ifdef CONFIG_CIFS_SMB2
- get_random_bytes(cifs_client_guid, SMB2_CLIENT_GUID_SIZE);
-#endif
-
if (cifs_max_pending < 2) {
cifs_max_pending = 2;
cifs_dbg(FYI, "cifs_max_pending set to min of 2\n");
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 26a754f49ba..70f178a7c75 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -22,20 +22,28 @@
#ifndef _CIFSFS_H
#define _CIFSFS_H
+#include <linux/hash.h>
+
#define ROOT_I 2
/*
* ino_t is 32-bits on 32-bit arch. We have to squash the 64-bit value down
- * so that it will fit.
+ * so that it will fit. We use hash_64 to convert the value to 31 bits, and
+ * then add 1, to ensure that we don't end up with a 0 as the value.
*/
+#if BITS_PER_LONG == 64
static inline ino_t
cifs_uniqueid_to_ino_t(u64 fileid)
{
- ino_t ino = (ino_t) fileid;
- if (sizeof(ino_t) < sizeof(u64))
- ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8;
- return ino;
+ return (ino_t)fileid;
}
+#else
+static inline ino_t
+cifs_uniqueid_to_ino_t(u64 fileid)
+{
+ return (ino_t)hash_64(fileid, (sizeof(ino_t) * 8) - 1) + 1;
+}
+#endif
extern struct file_system_type cifs_fs_type;
extern const struct address_space_operations cifs_addr_ops;
@@ -67,6 +75,8 @@ extern int cifs_revalidate_dentry_attr(struct dentry *);
extern int cifs_revalidate_file(struct file *filp);
extern int cifs_revalidate_dentry(struct dentry *);
extern int cifs_invalidate_mapping(struct inode *inode);
+extern int cifs_revalidate_mapping(struct inode *inode);
+extern int cifs_zap_mapping(struct inode *inode);
extern int cifs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
extern int cifs_setattr(struct dentry *, struct iattr *);
@@ -85,14 +95,10 @@ extern const struct file_operations cifs_file_strict_nobrl_ops;
extern int cifs_open(struct inode *inode, struct file *file);
extern int cifs_close(struct inode *inode, struct file *file);
extern int cifs_closedir(struct inode *inode, struct file *file);
-extern ssize_t cifs_user_readv(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos);
-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_writev(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos);
-extern ssize_t cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos);
+extern ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to);
+extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to);
+extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from);
+extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from);
extern int cifs_lock(struct file *, int, struct file_lock *);
extern int cifs_fsync(struct file *, loff_t, loff_t, int);
extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int);
@@ -130,5 +136,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
extern const struct export_operations cifs_export_ops;
#endif /* CONFIG_CIFS_NFSD_EXPORT */
-#define CIFS_VERSION "2.02"
+#define CIFS_VERSION "2.03"
#endif /* _CIFSFS_H */
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index f918a998a08..de6aed8c78e 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -228,6 +228,8 @@ struct smb_version_operations {
/* verify the message */
int (*check_message)(char *, unsigned int);
bool (*is_oplock_break)(char *, struct TCP_Server_Info *);
+ void (*downgrade_oplock)(struct TCP_Server_Info *,
+ struct cifsInodeInfo *, bool);
/* process transaction2 response */
bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *,
char *, int);
@@ -323,7 +325,8 @@ struct smb_version_operations {
/* async read from the server */
int (*async_readv)(struct cifs_readdata *);
/* async write to the server */
- int (*async_writev)(struct cifs_writedata *);
+ int (*async_writev)(struct cifs_writedata *,
+ void (*release)(struct kref *));
/* sync read from the server */
int (*sync_read)(const unsigned int, struct cifsFileInfo *,
struct cifs_io_parms *, unsigned int *, char **,
@@ -370,8 +373,12 @@ struct smb_version_operations {
void (*new_lease_key)(struct cifs_fid *);
int (*generate_signingkey)(struct cifs_ses *);
int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *);
- int (*query_mf_symlink)(const unsigned char *, char *, unsigned int *,
- struct cifs_sb_info *, unsigned int);
+ int (*query_mf_symlink)(unsigned int, struct cifs_tcon *,
+ struct cifs_sb_info *, const unsigned char *,
+ char *, unsigned int *);
+ int (*create_mf_symlink)(unsigned int, struct cifs_tcon *,
+ struct cifs_sb_info *, const unsigned char *,
+ char *, unsigned int *);
/* if we can do cache read operations */
bool (*is_read_op)(__u32);
/* set oplock level for the inode */
@@ -385,6 +392,18 @@ struct smb_version_operations {
struct cifsFileInfo *target_file, u64 src_off, u64 len,
u64 dest_off);
int (*validate_negotiate)(const unsigned int, struct cifs_tcon *);
+ ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *,
+ const unsigned char *, const unsigned char *, char *,
+ size_t, const struct nls_table *, int);
+ int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *,
+ const char *, const void *, const __u16,
+ const struct nls_table *, int);
+ struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *,
+ const char *, u32 *);
+ struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *,
+ const struct cifs_fid *, u32 *);
+ int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *,
+ int);
};
struct smb_version_values {
@@ -496,7 +515,7 @@ struct cifs_mnt_data {
static inline unsigned int
get_rfc1002_length(void *buf)
{
- return be32_to_cpu(*((__be32 *)buf));
+ return be32_to_cpu(*((__be32 *)buf)) & 0xffffff;
}
static inline void
@@ -540,6 +559,7 @@ struct TCP_Server_Info {
int echo_credits; /* echo reserved slots */
int oplock_credits; /* oplock break reserved slots */
bool echoes:1; /* enable echoes */
+ __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */
#endif
u16 dialect; /* dialect index that server chose */
bool oplocks:1; /* enable oplocks */
@@ -1054,7 +1074,7 @@ struct cifs_writedata {
unsigned int pagesz;
unsigned int tailsz;
unsigned int nr_pages;
- struct page *pages[1];
+ struct page *pages[];
};
/*
@@ -1094,8 +1114,15 @@ struct cifsInodeInfo {
__u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */
unsigned int oplock; /* oplock/lease level we have */
unsigned int epoch; /* used to track lease state changes */
- bool delete_pending; /* DELETE_ON_CLOSE is set */
- bool invalid_mapping; /* pagecache is invalid */
+#define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */
+#define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */
+#define CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2 (2) /* Downgrade oplock to L2 */
+#define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */
+#define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */
+#define CIFS_INO_LOCK (5) /* lock bit for synchronization */
+ unsigned long flags;
+ spinlock_t writers_lock;
+ unsigned int writers; /* Number of writers on this inode */
unsigned long time; /* jiffies of last update of inode */
u64 server_eof; /* current file size on server -- protected by i_lock */
u64 uniqueid; /* server inode number */
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index aa339762034..ca7980a1e30 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -127,6 +127,9 @@ extern u64 cifs_UnixTimeToNT(struct timespec);
extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
int offset);
extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
+extern int cifs_get_writer(struct cifsInodeInfo *cinode);
+extern void cifs_put_writer(struct cifsInodeInfo *cinode);
+extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
extern int cifs_unlock_range(struct cifsFileInfo *cfile,
struct file_lock *flock, const unsigned int xid);
extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
@@ -151,7 +154,7 @@ extern struct inode *cifs_iget(struct super_block *sb,
extern int cifs_get_inode_info(struct inode **inode, const char *full_path,
FILE_ALL_INFO *data, struct super_block *sb,
- int xid, const __u16 *fid);
+ int xid, const struct cifs_fid *fid);
extern int cifs_get_inode_info_unix(struct inode **pinode,
const unsigned char *search_path,
struct super_block *sb, unsigned int xid);
@@ -162,11 +165,13 @@ extern int cifs_rename_pending_delete(const char *full_path,
const unsigned int xid);
extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
struct cifs_fattr *fattr, struct inode *inode,
- const char *path, const __u16 *pfid);
+ const char *path, const struct cifs_fid *pfid);
extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
kuid_t, kgid_t);
extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
const char *, u32 *);
+extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
+ const struct cifs_fid *, u32 *);
extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
const char *, int);
@@ -362,11 +367,8 @@ extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
const struct nls_table *nls_codepage);
extern int CIFSSMB_set_compression(const unsigned int xid,
struct cifs_tcon *tcon, __u16 fid);
-extern int CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fileName, const int disposition,
- const int access_flags, const int omode,
- __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
- const struct nls_table *nls_codepage, int remap);
+extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
+ int *oplock, FILE_ALL_INFO *buf);
extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
const char *fileName, const int disposition,
const int access_flags, const int omode,
@@ -476,10 +478,11 @@ extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
-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, unsigned int xid);
+extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
+extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb,
+ struct cifs_fattr *fattr,
+ const unsigned char *path);
extern int mdfour(unsigned char *, unsigned char *, int);
extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
const struct nls_table *codepage);
@@ -490,12 +493,18 @@ void cifs_readdata_release(struct kref *refcount);
int cifs_async_readv(struct cifs_readdata *rdata);
int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
-int cifs_async_writev(struct cifs_writedata *wdata);
+int cifs_async_writev(struct cifs_writedata *wdata,
+ void (*release)(struct kref *kref));
void cifs_writev_complete(struct work_struct *work);
struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
work_func_t complete);
void cifs_writedata_release(struct kref *refcount);
-int open_query_close_cifs_symlink(const unsigned char *path, char *pbuf,
- unsigned int *pbytes_read, struct cifs_sb_info *cifs_sb,
- unsigned int xid);
+int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb,
+ const unsigned char *path, char *pbuf,
+ unsigned int *pbytes_read);
+int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb,
+ const unsigned char *path, char *pbuf,
+ unsigned int *pbytes_written);
#endif /* _CIFSPROTO_H */
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 124aa0230c1..6ce4e0954b9 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -1273,104 +1273,124 @@ OldOpenRetry:
}
int
-CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fileName, const int openDisposition,
- const int access_flags, const int create_options, __u16 *netfid,
- int *pOplock, FILE_ALL_INFO *pfile_info,
- const struct nls_table *nls_codepage, int remap)
+CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock,
+ FILE_ALL_INFO *buf)
{
int rc = -EACCES;
- OPEN_REQ *pSMB = NULL;
- OPEN_RSP *pSMBr = NULL;
+ OPEN_REQ *req = NULL;
+ OPEN_RSP *rsp = NULL;
int bytes_returned;
int name_len;
__u16 count;
+ struct cifs_sb_info *cifs_sb = oparms->cifs_sb;
+ struct cifs_tcon *tcon = oparms->tcon;
+ int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
+ const struct nls_table *nls = cifs_sb->local_nls;
+ int create_options = oparms->create_options;
+ int desired_access = oparms->desired_access;
+ int disposition = oparms->disposition;
+ const char *path = oparms->path;
openRetry:
- rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB,
- (void **) &pSMBr);
+ rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req,
+ (void **)&rsp);
if (rc)
return rc;
- pSMB->AndXCommand = 0xFF; /* none */
+ /* no commands go after this */
+ req->AndXCommand = 0xFF;
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- count = 1; /* account for one byte pad to word boundary */
- name_len =
- cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1),
- fileName, PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
+ if (req->hdr.Flags2 & SMBFLG2_UNICODE) {
+ /* account for one byte pad to word boundary */
+ count = 1;
+ name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1),
+ path, PATH_MAX, nls, remap);
+ /* trailing null */
+ name_len++;
name_len *= 2;
- pSMB->NameLength = cpu_to_le16(name_len);
- } else { /* BB improve check for buffer overruns BB */
- count = 0; /* no pad */
- name_len = strnlen(fileName, PATH_MAX);
- name_len++; /* trailing null */
- pSMB->NameLength = cpu_to_le16(name_len);
- strncpy(pSMB->fileName, fileName, name_len);
+ req->NameLength = cpu_to_le16(name_len);
+ } else {
+ /* BB improve check for buffer overruns BB */
+ /* no pad */
+ count = 0;
+ name_len = strnlen(path, PATH_MAX);
+ /* trailing null */
+ name_len++;
+ req->NameLength = cpu_to_le16(name_len);
+ strncpy(req->fileName, path, name_len);
}
- if (*pOplock & REQ_OPLOCK)
- pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK);
- else if (*pOplock & REQ_BATCHOPLOCK)
- pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
- pSMB->DesiredAccess = cpu_to_le32(access_flags);
- pSMB->AllocationSize = 0;
- /* set file as system file if special file such
- as fifo and server expecting SFU style and
- no Unix extensions */
+
+ if (*oplock & REQ_OPLOCK)
+ req->OpenFlags = cpu_to_le32(REQ_OPLOCK);
+ else if (*oplock & REQ_BATCHOPLOCK)
+ req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
+
+ req->DesiredAccess = cpu_to_le32(desired_access);
+ req->AllocationSize = 0;
+
+ /*
+ * Set file as system file if special file such as fifo and server
+ * expecting SFU style and no Unix extensions.
+ */
if (create_options & CREATE_OPTION_SPECIAL)
- pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM);
+ req->FileAttributes = cpu_to_le32(ATTR_SYSTEM);
else
- pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL);
+ req->FileAttributes = cpu_to_le32(ATTR_NORMAL);
- /* XP does not handle ATTR_POSIX_SEMANTICS */
- /* but it helps speed up case sensitive checks for other
- servers such as Samba */
+ /*
+ * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case
+ * sensitive checks for other servers such as Samba.
+ */
if (tcon->ses->capabilities & CAP_UNIX)
- pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
+ req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
if (create_options & CREATE_OPTION_READONLY)
- pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);
+ req->FileAttributes |= cpu_to_le32(ATTR_READONLY);
+
+ req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
+ req->CreateDisposition = cpu_to_le32(disposition);
+ req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
- pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
- pSMB->CreateDisposition = cpu_to_le32(openDisposition);
- pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
/* BB Expirement with various impersonation levels and verify */
- pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
- pSMB->SecurityFlags =
- SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY;
+ req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
+ req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY;
count += name_len;
- inc_rfc1001_len(pSMB, count);
+ inc_rfc1001_len(req, count);
- pSMB->ByteCount = cpu_to_le16(count);
- /* long_op set to 1 to allow for oplock break timeouts */
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *)pSMBr, &bytes_returned, 0);
+ req->ByteCount = cpu_to_le16(count);
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req,
+ (struct smb_hdr *)rsp, &bytes_returned, 0);
cifs_stats_inc(&tcon->stats.cifs_stats.num_opens);
if (rc) {
cifs_dbg(FYI, "Error in Open = %d\n", rc);
- } else {
- *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */
- *netfid = pSMBr->Fid; /* cifs fid stays in le */
- /* Let caller know file was created so we can set the mode. */
- /* Do we care about the CreateAction in any other cases? */
- if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
- *pOplock |= CIFS_CREATE_ACTION;
- if (pfile_info) {
- memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime,
- 36 /* CreationTime to Attributes */);
- /* the file_info buf is endian converted by caller */
- pfile_info->AllocationSize = pSMBr->AllocationSize;
- pfile_info->EndOfFile = pSMBr->EndOfFile;
- pfile_info->NumberOfLinks = cpu_to_le32(1);
- pfile_info->DeletePending = 0;
- }
+ cifs_buf_release(req);
+ if (rc == -EAGAIN)
+ goto openRetry;
+ return rc;
}
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto openRetry;
+ /* 1 byte no need to le_to_cpu */
+ *oplock = rsp->OplockLevel;
+ /* cifs fid stays in le */
+ oparms->fid->netfid = rsp->Fid;
+
+ /* Let caller know file was created so we can set the mode. */
+ /* Do we care about the CreateAction in any other cases? */
+ if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction)
+ *oplock |= CIFS_CREATE_ACTION;
+
+ if (buf) {
+ /* copy from CreationTime to Attributes */
+ memcpy((char *)buf, (char *)&rsp->CreationTime, 36);
+ /* the file_info buf is endian converted by caller */
+ buf->AllocationSize = rsp->AllocationSize;
+ buf->EndOfFile = rsp->EndOfFile;
+ buf->NumberOfLinks = cpu_to_le32(1);
+ buf->DeletePending = 0;
+ }
+
+ cifs_buf_release(req);
return rc;
}
@@ -1890,7 +1910,7 @@ cifs_writev_requeue(struct cifs_writedata *wdata)
do {
server = tlink_tcon(wdata->cfile->tlink)->ses->server;
- rc = server->ops->async_writev(wdata);
+ rc = server->ops->async_writev(wdata, cifs_writedata_release);
} while (rc == -EAGAIN);
for (i = 0; i < wdata->nr_pages; i++) {
@@ -1942,15 +1962,9 @@ cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete)
{
struct cifs_writedata *wdata;
- /* this would overflow */
- if (nr_pages == 0) {
- cifs_dbg(VFS, "%s: called with nr_pages == 0!\n", __func__);
- return NULL;
- }
-
/* writedata + number of page pointers */
wdata = kzalloc(sizeof(*wdata) +
- sizeof(struct page *) * (nr_pages - 1), GFP_NOFS);
+ sizeof(struct page *) * nr_pages, GFP_NOFS);
if (wdata != NULL) {
kref_init(&wdata->refcount);
INIT_LIST_HEAD(&wdata->list);
@@ -2011,7 +2025,8 @@ cifs_writev_callback(struct mid_q_entry *mid)
/* cifs_async_writev - send an async write, and set up mid to handle result */
int
-cifs_async_writev(struct cifs_writedata *wdata)
+cifs_async_writev(struct cifs_writedata *wdata,
+ void (*release)(struct kref *kref))
{
int rc = -EACCES;
WRITE_REQ *smb = NULL;
@@ -2085,7 +2100,7 @@ cifs_async_writev(struct cifs_writedata *wdata)
if (rc == 0)
cifs_stats_inc(&tcon->stats.cifs_stats.num_writes);
else
- kref_put(&wdata->refcount, cifs_writedata_release);
+ kref_put(&wdata->refcount, release);
async_writev_out:
cifs_small_buf_release(smb);
@@ -4010,7 +4025,7 @@ QFileInfoRetry:
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
- cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc);
+ cifs_dbg(FYI, "Send error in QFileInfo = %d", rc);
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
@@ -4179,7 +4194,7 @@ UnixQFileInfoRetry:
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
- cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc);
+ cifs_dbg(FYI, "Send error in UnixQFileInfo = %d", rc);
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
@@ -4263,7 +4278,7 @@ UnixQPathInfoRetry:
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
- cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc);
+ cifs_dbg(FYI, "Send error in UnixQPathInfo = %d", rc);
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
@@ -6182,6 +6197,9 @@ QAllEAsRetry:
cifs_dbg(FYI, "ea length %d\n", list_len);
if (list_len <= 8) {
cifs_dbg(FYI, "empty EA list returned from server\n");
+ /* didn't find the named attribute */
+ if (ea_name)
+ rc = -ENODATA;
goto QAllEAsOut;
}
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 8813ff776ba..20d75b8ddb2 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -2144,6 +2144,9 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
sizeof(tcp_ses->srcaddr));
memcpy(&tcp_ses->dstaddr, &volume_info->dstaddr,
sizeof(tcp_ses->dstaddr));
+#ifdef CONFIG_CIFS_SMB2
+ get_random_bytes(tcp_ses->client_guid, SMB2_CLIENT_GUID_SIZE);
+#endif
/*
* at this point we are the only ones with the pointer
* to the struct since the kernel thread not created yet
@@ -2225,7 +2228,7 @@ static int match_session(struct cifs_ses *ses, struct smb_vol *vol)
vol->username ? vol->username : "",
CIFS_MAX_USERNAME_LEN))
return 0;
- if (strlen(vol->username) != 0 &&
+ if ((vol->username && strlen(vol->username) != 0) &&
ses->password != NULL &&
strncmp(ses->password,
vol->password ? vol->password : "",
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 11ff5f116b2..3db0c5fd9a1 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -193,7 +193,7 @@ check_name(struct dentry *direntry)
static int
cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
struct tcon_link *tlink, unsigned oflags, umode_t mode,
- __u32 *oplock, struct cifs_fid *fid, int *created)
+ __u32 *oplock, struct cifs_fid *fid)
{
int rc = -ENOENT;
int create_options = CREATE_NOT_DIR;
@@ -349,7 +349,6 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
.device = 0,
};
- *created |= FILE_CREATED;
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
args.uid = current_fsuid();
if (inode->i_mode & S_ISGID)
@@ -379,7 +378,7 @@ cifs_create_get_file_info:
xid);
else {
rc = cifs_get_inode_info(&newinode, full_path, buf, inode->i_sb,
- xid, &fid->netfid);
+ xid, fid);
if (newinode) {
if (server->ops->set_lease_key)
server->ops->set_lease_key(newinode, fid);
@@ -480,13 +479,16 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry,
cifs_add_pending_open(&fid, tlink, &open);
rc = cifs_do_create(inode, direntry, xid, tlink, oflags, mode,
- &oplock, &fid, opened);
+ &oplock, &fid);
if (rc) {
cifs_del_pending_open(&open);
goto out;
}
+ if ((oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
+ *opened |= FILE_CREATED;
+
rc = finish_open(file, direntry, generic_file_open, opened);
if (rc) {
if (server->ops->close)
@@ -529,7 +531,6 @@ int cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode,
struct TCP_Server_Info *server;
struct cifs_fid fid;
__u32 oplock;
- int created = FILE_CREATED;
cifs_dbg(FYI, "cifs_create parent inode = 0x%p name is: %s and dentry = 0x%p\n",
inode, direntry->d_name.name, direntry);
@@ -546,7 +547,7 @@ int cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode,
server->ops->new_lease_key(&fid);
rc = cifs_do_create(inode, direntry, xid, tlink, oflags, mode,
- &oplock, &fid, &created);
+ &oplock, &fid);
if (!rc && server->ops->close)
server->ops->close(xid, tcon, &fid);
@@ -564,12 +565,13 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL;
struct cifs_sb_info *cifs_sb;
struct tcon_link *tlink;
- struct cifs_tcon *pTcon;
+ struct cifs_tcon *tcon;
struct cifs_io_parms io_parms;
char *full_path = NULL;
struct inode *newinode = NULL;
int oplock = 0;
- u16 fileHandle;
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
FILE_ALL_INFO *buf = NULL;
unsigned int bytes_written;
struct win_dev *pdev;
@@ -582,7 +584,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
if (IS_ERR(tlink))
return PTR_ERR(tlink);
- pTcon = tlink_tcon(tlink);
+ tcon = tlink_tcon(tlink);
xid = get_xid();
@@ -592,7 +594,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
goto mknod_out;
}
- if (pTcon->unix_ext) {
+ if (tcon->unix_ext) {
struct cifs_unix_set_info_args args = {
.mode = mode & ~current_umask(),
.ctime = NO_CHANGE_64,
@@ -607,7 +609,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
args.uid = INVALID_UID; /* no change */
args.gid = INVALID_GID; /* no change */
}
- rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, &args,
+ rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
@@ -639,42 +641,44 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;
- rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_CREATE,
- GENERIC_WRITE, create_options,
- &fileHandle, &oplock, buf, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = GENERIC_WRITE;
+ oparms.create_options = create_options;
+ oparms.disposition = FILE_CREATE;
+ oparms.path = full_path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = CIFS_open(xid, &oparms, &oplock, buf);
if (rc)
goto mknod_out;
- /* BB Do not bother to decode buf since no local inode yet to put
- * timestamps in, but we can reuse it safely */
+ /*
+ * BB Do not bother to decode buf since no local inode yet to put
+ * timestamps in, but we can reuse it safely.
+ */
pdev = (struct win_dev *)buf;
- io_parms.netfid = fileHandle;
+ io_parms.netfid = fid.netfid;
io_parms.pid = current->tgid;
- io_parms.tcon = pTcon;
+ io_parms.tcon = tcon;
io_parms.offset = 0;
io_parms.length = sizeof(struct win_dev);
if (S_ISCHR(mode)) {
memcpy(pdev->type, "IntxCHR", 8);
- pdev->major =
- cpu_to_le64(MAJOR(device_number));
- pdev->minor =
- cpu_to_le64(MINOR(device_number));
- rc = CIFSSMBWrite(xid, &io_parms,
- &bytes_written, (char *)pdev,
- NULL, 0);
+ pdev->major = cpu_to_le64(MAJOR(device_number));
+ pdev->minor = cpu_to_le64(MINOR(device_number));
+ rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, (char *)pdev,
+ NULL, 0);
} else if (S_ISBLK(mode)) {
memcpy(pdev->type, "IntxBLK", 8);
- pdev->major =
- cpu_to_le64(MAJOR(device_number));
- pdev->minor =
- cpu_to_le64(MINOR(device_number));
- rc = CIFSSMBWrite(xid, &io_parms,
- &bytes_written, (char *)pdev,
- NULL, 0);
+ pdev->major = cpu_to_le64(MAJOR(device_number));
+ pdev->minor = cpu_to_le64(MINOR(device_number));
+ rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, (char *)pdev,
+ NULL, 0);
} /* else if (S_ISFIFO) */
- CIFSSMBClose(xid, pTcon, fileHandle);
+ CIFSSMBClose(xid, tcon, fid.netfid);
d_drop(direntry);
/* FIXME: add code here to set EAs */
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 5a5a87240fe..e90a1e9aa62 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -244,7 +244,7 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
xid);
else
rc = cifs_get_inode_info(&inode, full_path, buf, inode->i_sb,
- xid, &fid->netfid);
+ xid, fid);
out:
kfree(buf);
@@ -335,7 +335,7 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
spin_unlock(&cifs_file_list_lock);
if (fid->purge_cache)
- cifs_invalidate_mapping(inode);
+ cifs_zap_mapping(inode);
file->private_data = cfile;
return cfile;
@@ -392,7 +392,7 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
* again and get at least level II oplock.
*/
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO)
- CIFS_I(inode)->invalid_mapping = true;
+ set_bit(CIFS_INO_INVALID_MAPPING, &cifsi->flags);
cifs_set_oplock_level(cifsi, 0);
}
spin_unlock(&cifs_file_list_lock);
@@ -678,7 +678,7 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
/*
* Can not refresh inode by passing in file_info buf to be returned by
- * CIFSSMBOpen and then calling get_inode_info with returned buf since
+ * ops->open and then calling get_inode_info with returned buf since
* file might have write behind data that needs to be flushed and server
* version of file size can be stale. If we knew for sure that inode was
* not dirty locally we could do this.
@@ -1529,7 +1529,7 @@ cifs_setlk(struct file *file, struct file_lock *flock, __u32 type,
*/
if (!CIFS_CACHE_WRITE(CIFS_I(inode)) &&
CIFS_CACHE_READ(CIFS_I(inode))) {
- cifs_invalidate_mapping(inode);
+ cifs_zap_mapping(inode);
cifs_dbg(FYI, "Set no oplock for inode=%p due to mand locks\n",
inode);
CIFS_I(inode)->oplock = 0;
@@ -2043,7 +2043,8 @@ retry:
}
wdata->pid = wdata->cfile->pid;
server = tlink_tcon(wdata->cfile->tlink)->ses->server;
- rc = server->ops->async_writev(wdata);
+ rc = server->ops->async_writev(wdata,
+ cifs_writedata_release);
} while (wbc->sync_mode == WB_SYNC_ALL && rc == -EAGAIN);
for (i = 0; i < nr_pages; ++i)
@@ -2217,7 +2218,7 @@ int cifs_strict_fsync(struct file *file, loff_t start, loff_t end,
file->f_path.dentry->d_name.name, datasync);
if (!CIFS_CACHE_READ(CIFS_I(inode))) {
- rc = cifs_invalidate_mapping(inode);
+ rc = cifs_zap_mapping(inode);
if (rc) {
cifs_dbg(FYI, "rc: %d during invalidate phase\n", rc);
rc = 0; /* don't care about it in fsync */
@@ -2331,9 +2332,20 @@ size_t get_numpages(const size_t wsize, const size_t len, size_t *cur_len)
}
static void
-cifs_uncached_writev_complete(struct work_struct *work)
+cifs_uncached_writedata_release(struct kref *refcount)
{
int i;
+ struct cifs_writedata *wdata = container_of(refcount,
+ struct cifs_writedata, refcount);
+
+ for (i = 0; i < wdata->nr_pages; i++)
+ put_page(wdata->pages[i]);
+ cifs_writedata_release(refcount);
+}
+
+static void
+cifs_uncached_writev_complete(struct work_struct *work)
+{
struct cifs_writedata *wdata = container_of(work,
struct cifs_writedata, work);
struct inode *inode = wdata->cfile->dentry->d_inode;
@@ -2347,12 +2359,7 @@ cifs_uncached_writev_complete(struct work_struct *work)
complete(&wdata->done);
- if (wdata->result != -EAGAIN) {
- for (i = 0; i < wdata->nr_pages; i++)
- put_page(wdata->pages[i]);
- }
-
- kref_put(&wdata->refcount, cifs_writedata_release);
+ kref_put(&wdata->refcount, cifs_uncached_writedata_release);
}
/* attempt to send write to server, retry on any -EAGAIN errors */
@@ -2370,21 +2377,20 @@ cifs_uncached_retry_writev(struct cifs_writedata *wdata)
if (rc != 0)
continue;
}
- rc = server->ops->async_writev(wdata);
+ rc = server->ops->async_writev(wdata,
+ cifs_uncached_writedata_release);
} while (rc == -EAGAIN);
return rc;
}
static ssize_t
-cifs_iovec_write(struct file *file, const struct iovec *iov,
- unsigned long nr_segs, loff_t *poffset)
+cifs_iovec_write(struct file *file, struct iov_iter *from, loff_t *poffset)
{
unsigned long nr_pages, i;
- size_t copied, len, cur_len;
+ size_t bytes, copied, len, cur_len;
ssize_t total_written = 0;
loff_t offset;
- struct iov_iter it;
struct cifsFileInfo *open_file;
struct cifs_tcon *tcon;
struct cifs_sb_info *cifs_sb;
@@ -2393,14 +2399,16 @@ cifs_iovec_write(struct file *file, const struct iovec *iov,
int rc;
pid_t pid;
- len = iov_length(iov, nr_segs);
- if (!len)
- return 0;
-
+ len = iov_iter_count(from);
rc = generic_write_checks(file, poffset, &len, 0);
if (rc)
return rc;
+ if (!len)
+ return 0;
+
+ iov_iter_truncate(from, len);
+
INIT_LIST_HEAD(&wdata_list);
cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
open_file = file->private_data;
@@ -2416,7 +2424,6 @@ cifs_iovec_write(struct file *file, const struct iovec *iov,
else
pid = current->tgid;
- iov_iter_init(&it, iov, nr_segs, len, 0);
do {
size_t save_len;
@@ -2436,14 +2443,44 @@ cifs_iovec_write(struct file *file, const struct iovec *iov,
save_len = cur_len;
for (i = 0; i < nr_pages; i++) {
- copied = min_t(const size_t, cur_len, PAGE_SIZE);
- copied = iov_iter_copy_from_user(wdata->pages[i], &it,
- 0, copied);
+ bytes = min_t(size_t, cur_len, PAGE_SIZE);
+ copied = copy_page_from_iter(wdata->pages[i], 0, bytes,
+ from);
cur_len -= copied;
- iov_iter_advance(&it, copied);
+ /*
+ * If we didn't copy as much as we expected, then that
+ * may mean we trod into an unmapped area. Stop copying
+ * at that point. On the next pass through the big
+ * loop, we'll likely end up getting a zero-length
+ * write and bailing out of it.
+ */
+ if (copied < bytes)
+ break;
}
cur_len = save_len - cur_len;
+ /*
+ * If we have no data to send, then that probably means that
+ * the copy above failed altogether. That's most likely because
+ * the address in the iovec was bogus. Set the rc to -EFAULT,
+ * free anything we allocated and bail out.
+ */
+ if (!cur_len) {
+ for (i = 0; i < nr_pages; i++)
+ put_page(wdata->pages[i]);
+ kfree(wdata);
+ rc = -EFAULT;
+ break;
+ }
+
+ /*
+ * i + 1 now represents the number of pages we actually used in
+ * the copy phase above. Bring nr_pages down to that, and free
+ * any pages that we didn't use.
+ */
+ for ( ; nr_pages > i + 1; nr_pages--)
+ put_page(wdata->pages[nr_pages - 1]);
+
wdata->sync_mode = WB_SYNC_ALL;
wdata->nr_pages = nr_pages;
wdata->offset = (__u64)offset;
@@ -2454,7 +2491,8 @@ cifs_iovec_write(struct file *file, const struct iovec *iov,
wdata->tailsz = cur_len - ((nr_pages - 1) * PAGE_SIZE);
rc = cifs_uncached_retry_writev(wdata);
if (rc) {
- kref_put(&wdata->refcount, cifs_writedata_release);
+ kref_put(&wdata->refcount,
+ cifs_uncached_writedata_release);
break;
}
@@ -2496,7 +2534,7 @@ restart_loop:
}
}
list_del_init(&wdata->list);
- kref_put(&wdata->refcount, cifs_writedata_release);
+ kref_put(&wdata->refcount, cifs_uncached_writedata_release);
}
if (total_written > 0)
@@ -2506,11 +2544,11 @@ restart_loop:
return total_written ? total_written : (ssize_t)rc;
}
-ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos)
+ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from)
{
ssize_t written;
struct inode *inode;
+ loff_t pos = iocb->ki_pos;
inode = file_inode(iocb->ki_filp);
@@ -2520,9 +2558,9 @@ ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
* write request.
*/
- written = cifs_iovec_write(iocb->ki_filp, iov, nr_segs, &pos);
+ written = cifs_iovec_write(iocb->ki_filp, from, &pos);
if (written > 0) {
- CIFS_I(inode)->invalid_mapping = true;
+ set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags);
iocb->ki_pos = pos;
}
@@ -2530,8 +2568,7 @@ ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
}
static ssize_t
-cifs_writev(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos)
+cifs_writev(struct kiocb *iocb, struct iov_iter *from)
{
struct file *file = iocb->ki_filp;
struct cifsFileInfo *cfile = (struct cifsFileInfo *)file->private_data;
@@ -2539,38 +2576,38 @@ cifs_writev(struct kiocb *iocb, const struct iovec *iov,
struct cifsInodeInfo *cinode = CIFS_I(inode);
struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
ssize_t rc = -EACCES;
-
- BUG_ON(iocb->ki_pos != pos);
+ loff_t lock_pos = iocb->ki_pos;
/*
* We need to hold the sem to be sure nobody modifies lock list
* with a brlock that prevents writing.
*/
down_read(&cinode->lock_sem);
- if (!cifs_find_lock_conflict(cfile, pos, iov_length(iov, nr_segs),
+ mutex_lock(&inode->i_mutex);
+ if (file->f_flags & O_APPEND)
+ lock_pos = i_size_read(inode);
+ if (!cifs_find_lock_conflict(cfile, lock_pos, iov_iter_count(from),
server->vals->exclusive_lock_type, NULL,
CIFS_WRITE_OP)) {
- mutex_lock(&inode->i_mutex);
- rc = __generic_file_aio_write(iocb, iov, nr_segs,
- &iocb->ki_pos);
+ rc = __generic_file_write_iter(iocb, from);
mutex_unlock(&inode->i_mutex);
- }
- if (rc > 0) {
- ssize_t err;
+ if (rc > 0) {
+ ssize_t err;
- err = generic_write_sync(file, pos, rc);
- if (err < 0 && rc > 0)
- rc = err;
+ err = generic_write_sync(file, iocb->ki_pos - rc, rc);
+ if (err < 0)
+ rc = err;
+ }
+ } else {
+ mutex_unlock(&inode->i_mutex);
}
-
up_read(&cinode->lock_sem);
return rc;
}
ssize_t
-cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos)
+cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from)
{
struct inode *inode = file_inode(iocb->ki_filp);
struct cifsInodeInfo *cinode = CIFS_I(inode);
@@ -2580,12 +2617,19 @@ cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
ssize_t written;
+ written = cifs_get_writer(cinode);
+ if (written)
+ return written;
+
if (CIFS_CACHE_WRITE(cinode)) {
if (cap_unix(tcon->ses) &&
(CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability))
- && ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0))
- return generic_file_aio_write(iocb, iov, nr_segs, pos);
- return cifs_writev(iocb, iov, nr_segs, pos);
+ && ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0)) {
+ written = generic_file_write_iter(iocb, from);
+ goto out;
+ }
+ written = cifs_writev(iocb, from);
+ goto out;
}
/*
* For non-oplocked files in strict cache mode we need to write the data
@@ -2593,18 +2637,20 @@ cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
* 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.
*/
- written = cifs_user_writev(iocb, iov, nr_segs, pos);
+ written = cifs_user_writev(iocb, from);
if (written > 0 && CIFS_CACHE_READ(cinode)) {
/*
* Windows 7 server can delay breaking level2 oplock if a write
* request comes - break it on the client to prevent reading
* an old data.
*/
- cifs_invalidate_mapping(inode);
+ cifs_zap_mapping(inode);
cifs_dbg(FYI, "Set no oplock for inode=%p after a write operation\n",
inode);
cinode->oplock = 0;
}
+out:
+ cifs_put_writer(cinode);
return written;
}
@@ -2699,56 +2745,27 @@ cifs_retry_async_readv(struct cifs_readdata *rdata)
/**
* cifs_readdata_to_iov - copy data from pages in response to an iovec
* @rdata: the readdata response with list of pages holding data
- * @iov: vector in which we should copy the data
- * @nr_segs: number of segments in vector
- * @offset: offset into file of the first iovec
- * @copied: used to return the amount of data copied to the iov
+ * @iter: destination for our data
*
* This function copies data from a list of pages in a readdata response into
* an array of iovecs. It will first calculate where the data should go
* based on the info in the readdata and then copy the data into that spot.
*/
-static ssize_t
-cifs_readdata_to_iov(struct cifs_readdata *rdata, const struct iovec *iov,
- unsigned long nr_segs, loff_t offset, ssize_t *copied)
+static int
+cifs_readdata_to_iov(struct cifs_readdata *rdata, struct iov_iter *iter)
{
- int rc = 0;
- struct iov_iter ii;
- size_t pos = rdata->offset - offset;
- ssize_t remaining = rdata->bytes;
- unsigned char *pdata;
+ size_t remaining = rdata->bytes;
unsigned int i;
- /* set up iov_iter and advance to the correct offset */
- iov_iter_init(&ii, iov, nr_segs, iov_length(iov, nr_segs), 0);
- iov_iter_advance(&ii, pos);
-
- *copied = 0;
for (i = 0; i < rdata->nr_pages; i++) {
- ssize_t copy;
struct page *page = rdata->pages[i];
-
- /* copy a whole page or whatever's left */
- copy = min_t(ssize_t, remaining, PAGE_SIZE);
-
- /* ...but limit it to whatever space is left in the iov */
- copy = min_t(ssize_t, copy, iov_iter_count(&ii));
-
- /* go while there's data to be copied and no errors */
- if (copy && !rc) {
- pdata = kmap(page);
- rc = memcpy_toiovecend(ii.iov, pdata, ii.iov_offset,
- (int)copy);
- kunmap(page);
- if (!rc) {
- *copied += copy;
- remaining -= copy;
- iov_iter_advance(&ii, copy);
- }
- }
+ size_t copy = min_t(size_t, remaining, PAGE_SIZE);
+ size_t written = copy_page_to_iter(page, 0, copy, iter);
+ remaining -= written;
+ if (written < copy && iov_iter_count(iter) > 0)
+ break;
}
-
- return rc;
+ return remaining ? -EFAULT : 0;
}
static void
@@ -2809,14 +2826,13 @@ cifs_uncached_read_into_pages(struct TCP_Server_Info *server,
return total_read > 0 ? total_read : result;
}
-static ssize_t
-cifs_iovec_read(struct file *file, const struct iovec *iov,
- unsigned long nr_segs, loff_t *poffset)
+ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to)
{
+ struct file *file = iocb->ki_filp;
ssize_t rc;
size_t len, cur_len;
ssize_t total_read = 0;
- loff_t offset = *poffset;
+ loff_t offset = iocb->ki_pos;
unsigned int npages;
struct cifs_sb_info *cifs_sb;
struct cifs_tcon *tcon;
@@ -2825,10 +2841,7 @@ cifs_iovec_read(struct file *file, const struct iovec *iov,
struct list_head rdata_list;
pid_t pid;
- if (!nr_segs)
- return 0;
-
- len = iov_length(iov, nr_segs);
+ len = iov_iter_count(to);
if (!len)
return 0;
@@ -2857,7 +2870,7 @@ cifs_iovec_read(struct file *file, const struct iovec *iov,
cifs_uncached_readv_complete);
if (!rdata) {
rc = -ENOMEM;
- goto error;
+ break;
}
rc = cifs_read_allocate_pages(rdata, npages);
@@ -2889,60 +2902,48 @@ error:
if (!list_empty(&rdata_list))
rc = 0;
+ len = iov_iter_count(to);
/* the loop below should proceed in the order of increasing offsets */
-restart_loop:
list_for_each_entry_safe(rdata, tmp, &rdata_list, list) {
+ again:
if (!rc) {
- ssize_t copied;
-
/* FIXME: freezable sleep too? */
rc = wait_for_completion_killable(&rdata->done);
if (rc)
rc = -EINTR;
- else if (rdata->result)
+ else if (rdata->result) {
rc = rdata->result;
- else {
- rc = cifs_readdata_to_iov(rdata, iov,
- nr_segs, *poffset,
- &copied);
- total_read += copied;
+ /* resend call if it's a retryable error */
+ if (rc == -EAGAIN) {
+ rc = cifs_retry_async_readv(rdata);
+ goto again;
+ }
+ } else {
+ rc = cifs_readdata_to_iov(rdata, to);
}
- /* resend call if it's a retryable error */
- if (rc == -EAGAIN) {
- rc = cifs_retry_async_readv(rdata);
- goto restart_loop;
- }
}
list_del_init(&rdata->list);
kref_put(&rdata->refcount, cifs_uncached_readdata_release);
}
+ total_read = len - iov_iter_count(to);
+
cifs_stats_bytes_read(tcon, total_read);
- *poffset += total_read;
/* mask nodata case */
if (rc == -ENODATA)
rc = 0;
- return total_read ? total_read : rc;
-}
-
-ssize_t cifs_user_readv(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos)
-{
- ssize_t read;
-
- read = cifs_iovec_read(iocb->ki_filp, iov, nr_segs, &pos);
- if (read > 0)
- iocb->ki_pos = pos;
-
- return read;
+ if (total_read) {
+ iocb->ki_pos += total_read;
+ return total_read;
+ }
+ return rc;
}
ssize_t
-cifs_strict_readv(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos)
+cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to)
{
struct inode *inode = file_inode(iocb->ki_filp);
struct cifsInodeInfo *cinode = CIFS_I(inode);
@@ -2961,22 +2962,22 @@ cifs_strict_readv(struct kiocb *iocb, const struct iovec *iov,
* pos+len-1.
*/
if (!CIFS_CACHE_READ(cinode))
- return cifs_user_readv(iocb, iov, nr_segs, pos);
+ return cifs_user_readv(iocb, to);
if (cap_unix(tcon->ses) &&
(CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability)) &&
((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0))
- return generic_file_aio_read(iocb, iov, nr_segs, pos);
+ return generic_file_read_iter(iocb, to);
/*
* We need to hold the sem to be sure nobody modifies lock list
* with a brlock that prevents reading.
*/
down_read(&cinode->lock_sem);
- if (!cifs_find_lock_conflict(cfile, pos, iov_length(iov, nr_segs),
+ if (!cifs_find_lock_conflict(cfile, iocb->ki_pos, iov_iter_count(to),
tcon->ses->server->vals->shared_lock_type,
NULL, CIFS_READ_OP))
- rc = generic_file_aio_read(iocb, iov, nr_segs, pos);
+ rc = generic_file_read_iter(iocb, to);
up_read(&cinode->lock_sem);
return rc;
}
@@ -3085,6 +3086,7 @@ cifs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
static struct vm_operations_struct cifs_file_vm_ops = {
.fault = filemap_fault,
+ .map_pages = filemap_map_pages,
.page_mkwrite = cifs_page_mkwrite,
.remap_pages = generic_file_remap_pages,
};
@@ -3097,7 +3099,7 @@ int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma)
xid = get_xid();
if (!CIFS_CACHE_READ(CIFS_I(inode))) {
- rc = cifs_invalidate_mapping(inode);
+ rc = cifs_zap_mapping(inode);
if (rc)
return rc;
}
@@ -3616,6 +3618,13 @@ static int cifs_launder_page(struct page *page)
return rc;
}
+static int
+cifs_pending_writers_wait(void *unused)
+{
+ schedule();
+ return 0;
+}
+
void cifs_oplock_break(struct work_struct *work)
{
struct cifsFileInfo *cfile = container_of(work, struct cifsFileInfo,
@@ -3623,8 +3632,15 @@ void cifs_oplock_break(struct work_struct *work)
struct inode *inode = cfile->dentry->d_inode;
struct cifsInodeInfo *cinode = CIFS_I(inode);
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
+ struct TCP_Server_Info *server = tcon->ses->server;
int rc = 0;
+ wait_on_bit(&cinode->flags, CIFS_INODE_PENDING_WRITERS,
+ cifs_pending_writers_wait, TASK_UNINTERRUPTIBLE);
+
+ server->ops->downgrade_oplock(server, cinode,
+ test_bit(CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2, &cinode->flags));
+
if (!CIFS_CACHE_WRITE(cinode) && CIFS_CACHE_READ(cinode) &&
cifs_has_mand_locks(cinode)) {
cifs_dbg(FYI, "Reset oplock to None for inode=%p due to mand locks\n",
@@ -3641,7 +3657,7 @@ void cifs_oplock_break(struct work_struct *work)
if (!CIFS_CACHE_READ(cinode)) {
rc = filemap_fdatawait(inode->i_mapping);
mapping_set_error(inode->i_mapping, rc);
- cifs_invalidate_mapping(inode);
+ cifs_zap_mapping(inode);
}
cifs_dbg(FYI, "Oplock flush inode %p rc %d\n", inode, rc);
}
@@ -3661,6 +3677,7 @@ void cifs_oplock_break(struct work_struct *work)
cinode);
cifs_dbg(FYI, "Oplock release rc = %d\n", rc);
}
+ cifs_done_oplock_break(cinode);
}
/*
@@ -3673,8 +3690,8 @@ void cifs_oplock_break(struct work_struct *work)
* Direct IO is not yet supported in the cached mode.
*/
static ssize_t
-cifs_direct_io(int rw, struct kiocb *iocb, const struct iovec *iov,
- loff_t pos, unsigned long nr_segs)
+cifs_direct_io(int rw, struct kiocb *iocb, struct iov_iter *iter,
+ loff_t pos)
{
/*
* FIXME
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 36f9ebb93ce..a174605f6af 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -22,6 +22,7 @@
#include <linux/stat.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
+#include <linux/freezer.h>
#include <asm/div64.h>
#include "cifsfs.h"
#include "cifspdu.h"
@@ -117,7 +118,7 @@ cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr)
cifs_dbg(FYI, "%s: invalidating inode %llu mapping\n",
__func__, cifs_i->uniqueid);
- cifs_i->invalid_mapping = true;
+ set_bit(CIFS_INO_INVALID_MAPPING, &cifs_i->flags);
}
/*
@@ -177,7 +178,10 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
else
cifs_i->time = jiffies;
- cifs_i->delete_pending = fattr->cf_flags & CIFS_FATTR_DELETE_PENDING;
+ if (fattr->cf_flags & CIFS_FATTR_DELETE_PENDING)
+ set_bit(CIFS_INO_DELETE_PENDING, &cifs_i->flags);
+ else
+ clear_bit(CIFS_INO_DELETE_PENDING, &cifs_i->flags);
cifs_i->server_eof = fattr->cf_eof;
/*
@@ -383,9 +387,10 @@ int cifs_get_inode_info_unix(struct inode **pinode,
/* check for Minshall+French symlinks */
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
- int tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid);
+ int tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr,
+ full_path);
if (tmprc)
- cifs_dbg(FYI, "CIFSCheckMFSymlink: %d\n", tmprc);
+ cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc);
}
if (*pinode == NULL) {
@@ -403,18 +408,20 @@ int cifs_get_inode_info_unix(struct inode **pinode,
}
static int
-cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path,
+cifs_sfu_type(struct cifs_fattr *fattr, const char *path,
struct cifs_sb_info *cifs_sb, unsigned int xid)
{
int rc;
int oplock = 0;
- __u16 netfid;
struct tcon_link *tlink;
struct cifs_tcon *tcon;
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
struct cifs_io_parms io_parms;
char buf[24];
unsigned int bytes_read;
char *pbuf;
+ int buf_type = CIFS_NO_BUFFER;
pbuf = buf;
@@ -435,62 +442,69 @@ cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path,
return PTR_ERR(tlink);
tcon = tlink_tcon(tlink);
- rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, GENERIC_READ,
- CREATE_NOT_DIR, &netfid, &oplock, NULL,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc == 0) {
- int buf_type = CIFS_NO_BUFFER;
- /* Read header */
- io_parms.netfid = netfid;
- io_parms.pid = current->tgid;
- io_parms.tcon = tcon;
- io_parms.offset = 0;
- io_parms.length = 24;
- rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf,
- &buf_type);
- if ((rc == 0) && (bytes_read >= 8)) {
- if (memcmp("IntxBLK", pbuf, 8) == 0) {
- cifs_dbg(FYI, "Block device\n");
- fattr->cf_mode |= S_IFBLK;
- fattr->cf_dtype = DT_BLK;
- if (bytes_read == 24) {
- /* we have enough to decode dev num */
- __u64 mjr; /* major */
- __u64 mnr; /* minor */
- mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
- mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
- fattr->cf_rdev = MKDEV(mjr, mnr);
- }
- } else if (memcmp("IntxCHR", pbuf, 8) == 0) {
- cifs_dbg(FYI, "Char device\n");
- fattr->cf_mode |= S_IFCHR;
- fattr->cf_dtype = DT_CHR;
- if (bytes_read == 24) {
- /* we have enough to decode dev num */
- __u64 mjr; /* major */
- __u64 mnr; /* minor */
- mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
- mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
- fattr->cf_rdev = MKDEV(mjr, mnr);
- }
- } else if (memcmp("IntxLNK", pbuf, 7) == 0) {
- cifs_dbg(FYI, "Symlink\n");
- fattr->cf_mode |= S_IFLNK;
- fattr->cf_dtype = DT_LNK;
- } else {
- fattr->cf_mode |= S_IFREG; /* file? */
- fattr->cf_dtype = DT_REG;
- rc = -EOPNOTSUPP;
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = GENERIC_READ;
+ oparms.create_options = CREATE_NOT_DIR;
+ oparms.disposition = FILE_OPEN;
+ oparms.path = path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = CIFS_open(xid, &oparms, &oplock, NULL);
+ if (rc) {
+ cifs_put_tlink(tlink);
+ return rc;
+ }
+
+ /* Read header */
+ io_parms.netfid = fid.netfid;
+ io_parms.pid = current->tgid;
+ io_parms.tcon = tcon;
+ io_parms.offset = 0;
+ io_parms.length = 24;
+
+ rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, &buf_type);
+ if ((rc == 0) && (bytes_read >= 8)) {
+ if (memcmp("IntxBLK", pbuf, 8) == 0) {
+ cifs_dbg(FYI, "Block device\n");
+ fattr->cf_mode |= S_IFBLK;
+ fattr->cf_dtype = DT_BLK;
+ if (bytes_read == 24) {
+ /* we have enough to decode dev num */
+ __u64 mjr; /* major */
+ __u64 mnr; /* minor */
+ mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
+ mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
+ fattr->cf_rdev = MKDEV(mjr, mnr);
}
+ } else if (memcmp("IntxCHR", pbuf, 8) == 0) {
+ cifs_dbg(FYI, "Char device\n");
+ fattr->cf_mode |= S_IFCHR;
+ fattr->cf_dtype = DT_CHR;
+ if (bytes_read == 24) {
+ /* we have enough to decode dev num */
+ __u64 mjr; /* major */
+ __u64 mnr; /* minor */
+ mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
+ mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
+ fattr->cf_rdev = MKDEV(mjr, mnr);
+ }
+ } else if (memcmp("IntxLNK", pbuf, 7) == 0) {
+ cifs_dbg(FYI, "Symlink\n");
+ fattr->cf_mode |= S_IFLNK;
+ fattr->cf_dtype = DT_LNK;
} else {
- fattr->cf_mode |= S_IFREG; /* then it is a file */
+ fattr->cf_mode |= S_IFREG; /* file? */
fattr->cf_dtype = DT_REG;
- rc = -EOPNOTSUPP; /* or some unknown SFU type */
+ rc = -EOPNOTSUPP;
}
- CIFSSMBClose(xid, tcon, netfid);
+ } else {
+ fattr->cf_mode |= S_IFREG; /* then it is a file */
+ fattr->cf_dtype = DT_REG;
+ rc = -EOPNOTSUPP; /* or some unknown SFU type */
}
+ CIFSSMBClose(xid, tcon, fid.netfid);
cifs_put_tlink(tlink);
return rc;
}
@@ -517,10 +531,15 @@ static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path,
return PTR_ERR(tlink);
tcon = tlink_tcon(tlink);
- rc = CIFSSMBQAllEAs(xid, tcon, path, "SETFILEBITS",
- ea_value, 4 /* size of buf */, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (tcon->ses->server->ops->query_all_EAs == NULL) {
+ cifs_put_tlink(tlink);
+ return -EOPNOTSUPP;
+ }
+
+ rc = tcon->ses->server->ops->query_all_EAs(xid, tcon, path,
+ "SETFILEBITS", ea_value, 4 /* size of buf */,
+ cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
cifs_put_tlink(tlink);
if (rc < 0)
return (int)rc;
@@ -662,7 +681,7 @@ cgfi_exit:
int
cifs_get_inode_info(struct inode **inode, const char *full_path,
FILE_ALL_INFO *data, struct super_block *sb, int xid,
- const __u16 *fid)
+ const struct cifs_fid *fid)
{
bool validinum = false;
__u16 srchflgs;
@@ -799,9 +818,10 @@ cifs_get_inode_info(struct inode **inode, const char *full_path,
/* check for Minshall+French symlinks */
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
- tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid);
+ tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr,
+ full_path);
if (tmprc)
- cifs_dbg(FYI, "CIFSCheckMFSymlink: %d\n", tmprc);
+ cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc);
}
if (!*inode) {
@@ -1030,7 +1050,8 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
{
int oplock = 0;
int rc;
- __u16 netfid;
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
struct inode *inode = dentry->d_inode;
struct cifsInodeInfo *cifsInode = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
@@ -1053,10 +1074,16 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
goto out;
}
- rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
- DELETE|FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
- &netfid, &oplock, NULL, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = DELETE | FILE_WRITE_ATTRIBUTES;
+ oparms.create_options = CREATE_NOT_DIR;
+ oparms.disposition = FILE_OPEN;
+ oparms.path = full_path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (rc != 0)
goto out;
@@ -1077,7 +1104,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
goto out_close;
}
info_buf->Attributes = cpu_to_le32(dosattr);
- rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid,
+ rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid,
current->tgid);
/* although we would like to mark the file hidden
if that fails we will still try to rename it */
@@ -1088,7 +1115,8 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
}
/* rename the file */
- rc = CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL, cifs_sb->local_nls,
+ rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, NULL,
+ cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc != 0) {
@@ -1097,8 +1125,8 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
}
/* try to set DELETE_ON_CLOSE */
- if (!cifsInode->delete_pending) {
- rc = CIFSSMBSetFileDisposition(xid, tcon, true, netfid,
+ if (!test_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags)) {
+ rc = CIFSSMBSetFileDisposition(xid, tcon, true, fid.netfid,
current->tgid);
/*
* some samba versions return -ENOENT when we try to set the
@@ -1114,11 +1142,11 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
rc = -EBUSY;
goto undo_rename;
}
- cifsInode->delete_pending = true;
+ set_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags);
}
out_close:
- CIFSSMBClose(xid, tcon, netfid);
+ CIFSSMBClose(xid, tcon, fid.netfid);
out:
kfree(info_buf);
cifs_put_tlink(tlink);
@@ -1130,13 +1158,13 @@ out:
* them anyway.
*/
undo_rename:
- CIFSSMBRenameOpenFile(xid, tcon, netfid, dentry->d_name.name,
+ CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, dentry->d_name.name,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
undo_setattr:
if (dosattr != origattr) {
info_buf->Attributes = cpu_to_le32(origattr);
- if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid,
+ if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid,
current->tgid))
cifsInode->cifsAttrs = origattr;
}
@@ -1547,7 +1575,8 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
struct tcon_link *tlink;
struct cifs_tcon *tcon;
struct TCP_Server_Info *server;
- __u16 srcfid;
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
int oplock, rc;
tlink = cifs_sb_tlink(cifs_sb);
@@ -1574,17 +1603,23 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
if (to_dentry->d_parent != from_dentry->d_parent)
goto do_rename_exit;
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
/* open the file to be renamed -- we need DELETE perms */
- rc = CIFSSMBOpen(xid, tcon, from_path, FILE_OPEN, DELETE,
- CREATE_NOT_DIR, &srcfid, &oplock, NULL,
- cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
+ oparms.desired_access = DELETE;
+ oparms.create_options = CREATE_NOT_DIR;
+ oparms.disposition = FILE_OPEN;
+ oparms.path = from_path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (rc == 0) {
- rc = CIFSSMBRenameOpenFile(xid, tcon, srcfid,
+ rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid,
(const char *) to_dentry->d_name.name,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
- CIFSSMBClose(xid, tcon, srcfid);
+ CIFSSMBClose(xid, tcon, fid.netfid);
}
do_rename_exit:
cifs_put_tlink(tlink);
@@ -1706,6 +1741,9 @@ cifs_inode_needs_reval(struct inode *inode)
if (cifs_i->time == 0)
return true;
+ if (!cifs_sb->actimeo)
+ return true;
+
if (!time_in_range(jiffies, cifs_i->time,
cifs_i->time + cifs_sb->actimeo))
return true;
@@ -1725,23 +1763,62 @@ int
cifs_invalidate_mapping(struct inode *inode)
{
int rc = 0;
- struct cifsInodeInfo *cifs_i = CIFS_I(inode);
-
- cifs_i->invalid_mapping = false;
if (inode->i_mapping && inode->i_mapping->nrpages != 0) {
rc = invalidate_inode_pages2(inode->i_mapping);
- if (rc) {
+ if (rc)
cifs_dbg(VFS, "%s: could not invalidate inode %p\n",
__func__, inode);
- cifs_i->invalid_mapping = true;
- }
}
cifs_fscache_reset_inode_cookie(inode);
return rc;
}
+/**
+ * cifs_wait_bit_killable - helper for functions that are sleeping on bit locks
+ * @word: long word containing the bit lock
+ */
+static int
+cifs_wait_bit_killable(void *word)
+{
+ if (fatal_signal_pending(current))
+ return -ERESTARTSYS;
+ freezable_schedule_unsafe();
+ return 0;
+}
+
+int
+cifs_revalidate_mapping(struct inode *inode)
+{
+ int rc;
+ unsigned long *flags = &CIFS_I(inode)->flags;
+
+ rc = wait_on_bit_lock(flags, CIFS_INO_LOCK, cifs_wait_bit_killable,
+ TASK_KILLABLE);
+ if (rc)
+ return rc;
+
+ if (test_and_clear_bit(CIFS_INO_INVALID_MAPPING, flags)) {
+ rc = cifs_invalidate_mapping(inode);
+ if (rc)
+ set_bit(CIFS_INO_INVALID_MAPPING, flags);
+ }
+
+ clear_bit_unlock(CIFS_INO_LOCK, flags);
+ smp_mb__after_atomic();
+ wake_up_bit(flags, CIFS_INO_LOCK);
+
+ return rc;
+}
+
+int
+cifs_zap_mapping(struct inode *inode)
+{
+ set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags);
+ return cifs_revalidate_mapping(inode);
+}
+
int cifs_revalidate_file_attr(struct file *filp)
{
int rc = 0;
@@ -1808,9 +1885,7 @@ int cifs_revalidate_file(struct file *filp)
if (rc)
return rc;
- if (CIFS_I(inode)->invalid_mapping)
- rc = cifs_invalidate_mapping(inode);
- return rc;
+ return cifs_revalidate_mapping(inode);
}
/* revalidate a dentry's inode attributes */
@@ -1823,9 +1898,7 @@ int cifs_revalidate_dentry(struct dentry *dentry)
if (rc)
return rc;
- if (CIFS_I(inode)->invalid_mapping)
- rc = cifs_invalidate_mapping(inode);
- return rc;
+ return cifs_revalidate_mapping(inode);
}
int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index 77492301cc2..45cb59bcc79 100644
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -85,7 +85,7 @@ static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
goto out_fput;
}
- src_inode = src_file.file->f_dentry->d_inode;
+ src_inode = file_inode(src_file.file);
/*
* Note: cifs case is easier than btrfs since server responsible for
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index cc0234710dd..68559fd557f 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -29,6 +29,10 @@
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
+/*
+ * M-F Symlink Functions - Begin
+ */
+
#define CIFS_MF_SYMLINK_LEN_OFFSET (4+1)
#define CIFS_MF_SYMLINK_MD5_OFFSET (CIFS_MF_SYMLINK_LEN_OFFSET+(4+1))
#define CIFS_MF_SYMLINK_LINK_OFFSET (CIFS_MF_SYMLINK_MD5_OFFSET+(32+1))
@@ -91,10 +95,8 @@ symlink_hash_err:
}
static int
-CIFSParseMFSymlink(const u8 *buf,
- unsigned int buf_len,
- unsigned int *_link_len,
- char **_link_str)
+parse_mf_symlink(const u8 *buf, unsigned int buf_len, unsigned int *_link_len,
+ char **_link_str)
{
int rc;
unsigned int link_len;
@@ -137,7 +139,7 @@ CIFSParseMFSymlink(const u8 *buf,
}
static int
-CIFSFormatMFSymlink(u8 *buf, unsigned int buf_len, const char *link_str)
+format_mf_symlink(u8 *buf, unsigned int buf_len, const char *link_str)
{
int rc;
unsigned int link_len;
@@ -180,214 +182,114 @@ CIFSFormatMFSymlink(u8 *buf, unsigned int buf_len, const char *link_str)
return 0;
}
+bool
+couldbe_mf_symlink(const struct cifs_fattr *fattr)
+{
+ if (!S_ISREG(fattr->cf_mode))
+ /* it's not a symlink */
+ return false;
+
+ if (fattr->cf_eof != CIFS_MF_SYMLINK_FILE_SIZE)
+ /* it's not a symlink */
+ return false;
+
+ return true;
+}
+
static int
-CIFSCreateMFSymLink(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fromName, const char *toName,
- struct cifs_sb_info *cifs_sb)
+create_mf_symlink(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const char *fromName,
+ const char *toName)
{
int rc;
- int oplock = 0;
- int remap;
- int create_options = CREATE_NOT_DIR;
- __u16 netfid = 0;
u8 *buf;
unsigned int bytes_written = 0;
- struct cifs_io_parms io_parms;
- struct nls_table *nls_codepage;
-
- nls_codepage = cifs_sb->local_nls;
- remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
if (!buf)
return -ENOMEM;
- rc = CIFSFormatMFSymlink(buf, CIFS_MF_SYMLINK_FILE_SIZE, toName);
- if (rc != 0) {
- kfree(buf);
- return rc;
- }
-
- if (backup_cred(cifs_sb))
- create_options |= CREATE_OPEN_BACKUP_INTENT;
-
- rc = CIFSSMBOpen(xid, tcon, fromName, FILE_CREATE, GENERIC_WRITE,
- create_options, &netfid, &oplock, NULL,
- nls_codepage, remap);
- if (rc != 0) {
- kfree(buf);
- return rc;
- }
-
- io_parms.netfid = netfid;
- io_parms.pid = current->tgid;
- io_parms.tcon = tcon;
- io_parms.offset = 0;
- io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
+ rc = format_mf_symlink(buf, CIFS_MF_SYMLINK_FILE_SIZE, toName);
+ if (rc)
+ goto out;
- rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, buf, NULL, 0);
- CIFSSMBClose(xid, tcon, netfid);
- kfree(buf);
- if (rc != 0)
- return rc;
+ rc = tcon->ses->server->ops->create_mf_symlink(xid, tcon, cifs_sb,
+ fromName, buf, &bytes_written);
+ if (rc)
+ goto out;
if (bytes_written != CIFS_MF_SYMLINK_FILE_SIZE)
- return -EIO;
-
- return 0;
+ rc = -EIO;
+out:
+ kfree(buf);
+ return rc;
}
static int
-CIFSQueryMFSymLink(const unsigned int xid, struct cifs_tcon *tcon,
- const unsigned char *searchName, char **symlinkinfo,
- const struct nls_table *nls_codepage, int remap)
+query_mf_symlink(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const unsigned char *path,
+ char **symlinkinfo)
{
int rc;
- int oplock = 0;
- __u16 netfid = 0;
- u8 *buf;
- char *pbuf;
- unsigned int bytes_read = 0;
- int buf_type = CIFS_NO_BUFFER;
+ u8 *buf = NULL;
unsigned int link_len = 0;
- struct cifs_io_parms io_parms;
- FILE_ALL_INFO file_info;
-
- rc = CIFSSMBOpen(xid, tcon, searchName, FILE_OPEN, GENERIC_READ,
- CREATE_NOT_DIR, &netfid, &oplock, &file_info,
- nls_codepage, remap);
- if (rc != 0)
- return rc;
-
- if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) {
- CIFSSMBClose(xid, tcon, netfid);
- /* it's not a symlink */
- return -EINVAL;
- }
+ unsigned int bytes_read = 0;
buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
if (!buf)
return -ENOMEM;
- pbuf = buf;
- io_parms.netfid = netfid;
- io_parms.pid = current->tgid;
- io_parms.tcon = tcon;
- io_parms.offset = 0;
- io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
-
- rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, &buf_type);
- CIFSSMBClose(xid, tcon, netfid);
- if (rc != 0) {
- kfree(buf);
- return rc;
- }
-
- rc = CIFSParseMFSymlink(buf, bytes_read, &link_len, symlinkinfo);
- kfree(buf);
- if (rc != 0)
- return rc;
-
- return 0;
-}
-
-bool
-CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr)
-{
- if (!(fattr->cf_mode & S_IFREG))
- /* it's not a symlink */
- return false;
-
- if (fattr->cf_eof != CIFS_MF_SYMLINK_FILE_SIZE)
- /* it's not a symlink */
- return false;
-
- return true;
-}
-
-int
-open_query_close_cifs_symlink(const unsigned char *path, char *pbuf,
- unsigned int *pbytes_read, struct cifs_sb_info *cifs_sb,
- unsigned int xid)
-{
- int rc;
- int oplock = 0;
- __u16 netfid = 0;
- struct tcon_link *tlink;
- struct cifs_tcon *ptcon;
- struct cifs_io_parms io_parms;
- int buf_type = CIFS_NO_BUFFER;
- FILE_ALL_INFO file_info;
- tlink = cifs_sb_tlink(cifs_sb);
- if (IS_ERR(tlink))
- return PTR_ERR(tlink);
- ptcon = tlink_tcon(tlink);
+ if (tcon->ses->server->ops->query_mf_symlink)
+ rc = tcon->ses->server->ops->query_mf_symlink(xid, tcon,
+ cifs_sb, path, buf, &bytes_read);
+ else
+ rc = -ENOSYS;
- rc = CIFSSMBOpen(xid, ptcon, path, FILE_OPEN, GENERIC_READ,
- CREATE_NOT_DIR, &netfid, &oplock, &file_info,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc != 0) {
- cifs_put_tlink(tlink);
- return rc;
- }
+ if (rc)
+ goto out;
- if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) {
- CIFSSMBClose(xid, ptcon, netfid);
- cifs_put_tlink(tlink);
- /* it's not a symlink */
- return rc;
+ if (bytes_read == 0) { /* not a symlink */
+ rc = -EINVAL;
+ goto out;
}
- io_parms.netfid = netfid;
- io_parms.pid = current->tgid;
- io_parms.tcon = ptcon;
- io_parms.offset = 0;
- io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
-
- rc = CIFSSMBRead(xid, &io_parms, pbytes_read, &pbuf, &buf_type);
- CIFSSMBClose(xid, ptcon, netfid);
- cifs_put_tlink(tlink);
+ rc = parse_mf_symlink(buf, bytes_read, &link_len, symlinkinfo);
+out:
+ kfree(buf);
return rc;
}
-
int
-CIFSCheckMFSymlink(struct cifs_fattr *fattr,
- const unsigned char *path,
- struct cifs_sb_info *cifs_sb, unsigned int xid)
+check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
+ const unsigned char *path)
{
- int rc = 0;
+ int rc;
u8 *buf = NULL;
unsigned int link_len = 0;
unsigned int bytes_read = 0;
- struct cifs_tcon *ptcon;
- if (!CIFSCouldBeMFSymlink(fattr))
+ if (!couldbe_mf_symlink(fattr))
/* it's not a symlink */
return 0;
buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
- if (!buf) {
- rc = -ENOMEM;
- goto out;
- }
+ if (!buf)
+ return -ENOMEM;
- ptcon = tlink_tcon(cifs_sb_tlink(cifs_sb));
- if ((ptcon->ses) && (ptcon->ses->server->ops->query_mf_symlink))
- rc = ptcon->ses->server->ops->query_mf_symlink(path, buf,
- &bytes_read, cifs_sb, xid);
+ if (tcon->ses->server->ops->query_mf_symlink)
+ rc = tcon->ses->server->ops->query_mf_symlink(xid, tcon,
+ cifs_sb, path, buf, &bytes_read);
else
- goto out;
+ rc = -ENOSYS;
- if (rc != 0)
+ if (rc)
goto out;
if (bytes_read == 0) /* not a symlink */
goto out;
- rc = CIFSParseMFSymlink(buf, bytes_read, &link_len, NULL);
+ rc = parse_mf_symlink(buf, bytes_read, &link_len, NULL);
if (rc == -EINVAL) {
/* it's not a symlink */
rc = 0;
@@ -407,6 +309,95 @@ out:
return rc;
}
+/*
+ * SMB 1.0 Protocol specific functions
+ */
+
+int
+cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const unsigned char *path,
+ char *pbuf, unsigned int *pbytes_read)
+{
+ int rc;
+ int oplock = 0;
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
+ struct cifs_io_parms io_parms;
+ int buf_type = CIFS_NO_BUFFER;
+ FILE_ALL_INFO file_info;
+
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = GENERIC_READ;
+ oparms.create_options = CREATE_NOT_DIR;
+ oparms.disposition = FILE_OPEN;
+ oparms.path = path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = CIFS_open(xid, &oparms, &oplock, &file_info);
+ if (rc)
+ return rc;
+
+ if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE))
+ /* it's not a symlink */
+ goto out;
+
+ io_parms.netfid = fid.netfid;
+ io_parms.pid = current->tgid;
+ io_parms.tcon = tcon;
+ io_parms.offset = 0;
+ io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
+
+ rc = CIFSSMBRead(xid, &io_parms, pbytes_read, &pbuf, &buf_type);
+out:
+ CIFSSMBClose(xid, tcon, fid.netfid);
+ return rc;
+}
+
+int
+cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const unsigned char *path,
+ char *pbuf, unsigned int *pbytes_written)
+{
+ int rc;
+ int oplock = 0;
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
+ struct cifs_io_parms io_parms;
+ int create_options = CREATE_NOT_DIR;
+
+ if (backup_cred(cifs_sb))
+ create_options |= CREATE_OPEN_BACKUP_INTENT;
+
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = GENERIC_WRITE;
+ oparms.create_options = create_options;
+ oparms.disposition = FILE_CREATE;
+ oparms.path = path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = CIFS_open(xid, &oparms, &oplock, NULL);
+ if (rc)
+ return rc;
+
+ io_parms.netfid = fid.netfid;
+ io_parms.pid = current->tgid;
+ io_parms.tcon = tcon;
+ io_parms.offset = 0;
+ io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
+
+ rc = CIFSSMBWrite(xid, &io_parms, pbytes_written, pbuf, NULL, 0);
+ CIFSSMBClose(xid, tcon, fid.netfid);
+ return rc;
+}
+
+/*
+ * M-F Symlink Functions - End
+ */
+
int
cifs_hardlink(struct dentry *old_file, struct inode *inode,
struct dentry *direntry)
@@ -442,8 +433,10 @@ cifs_hardlink(struct dentry *old_file, struct inode *inode,
CIFS_MOUNT_MAP_SPECIAL_CHR);
else {
server = tcon->ses->server;
- if (!server->ops->create_hardlink)
- return -ENOSYS;
+ if (!server->ops->create_hardlink) {
+ rc = -ENOSYS;
+ goto cifs_hl_exit;
+ }
rc = server->ops->create_hardlink(xid, tcon, from_name, to_name,
cifs_sb);
if ((rc == -EIO) || (rc == -EINVAL))
@@ -534,15 +527,10 @@ cifs_follow_link(struct dentry *direntry, struct nameidata *nd)
* and fallback to UNIX Extensions Symlinks.
*/
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
- rc = CIFSQueryMFSymLink(xid, tcon, full_path, &target_path,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
+ rc = query_mf_symlink(xid, tcon, cifs_sb, full_path,
+ &target_path);
- if ((rc != 0) && cap_unix(tcon->ses))
- rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, &target_path,
- cifs_sb->local_nls);
- else if (rc != 0 && server->ops->query_symlink)
+ if (rc != 0 && server->ops->query_symlink)
rc = server->ops->query_symlink(xid, tcon, full_path,
&target_path, cifs_sb);
@@ -591,8 +579,7 @@ cifs_symlink(struct inode *inode, struct dentry *direntry, const char *symname)
/* BB what if DFS and this volume is on different share? BB */
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
- rc = CIFSCreateMFSymLink(xid, pTcon, full_path, symname,
- cifs_sb);
+ rc = create_mf_symlink(xid, pTcon, cifs_sb, full_path, symname);
else if (pTcon->unix_ext)
rc = CIFSUnixCreateSymLink(xid, pTcon, full_path, symname,
cifs_sb->local_nls);
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 2f9f3790679..3b0c62e622d 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -466,8 +466,22 @@ is_valid_oplock_break(char *buffer, struct TCP_Server_Info *srv)
cifs_dbg(FYI, "file id match, oplock break\n");
pCifsInode = CIFS_I(netfile->dentry->d_inode);
- cifs_set_oplock_level(pCifsInode,
- pSMB->OplockLevel ? OPLOCK_READ : 0);
+ set_bit(CIFS_INODE_PENDING_OPLOCK_BREAK,
+ &pCifsInode->flags);
+
+ /*
+ * Set flag if the server downgrades the oplock
+ * to L2 else clear.
+ */
+ if (pSMB->OplockLevel)
+ set_bit(
+ CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
+ &pCifsInode->flags);
+ else
+ clear_bit(
+ CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
+ &pCifsInode->flags);
+
queue_work(cifsiod_wq,
&netfile->oplock_break);
netfile->oplock_break_cancelled = false;
@@ -551,6 +565,62 @@ void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock)
cinode->oplock = 0;
}
+static int
+cifs_oplock_break_wait(void *unused)
+{
+ schedule();
+ return signal_pending(current) ? -ERESTARTSYS : 0;
+}
+
+/*
+ * We wait for oplock breaks to be processed before we attempt to perform
+ * writes.
+ */
+int cifs_get_writer(struct cifsInodeInfo *cinode)
+{
+ int rc;
+
+start:
+ rc = wait_on_bit(&cinode->flags, CIFS_INODE_PENDING_OPLOCK_BREAK,
+ cifs_oplock_break_wait, TASK_KILLABLE);
+ if (rc)
+ return rc;
+
+ spin_lock(&cinode->writers_lock);
+ if (!cinode->writers)
+ set_bit(CIFS_INODE_PENDING_WRITERS, &cinode->flags);
+ cinode->writers++;
+ /* Check to see if we have started servicing an oplock break */
+ if (test_bit(CIFS_INODE_PENDING_OPLOCK_BREAK, &cinode->flags)) {
+ cinode->writers--;
+ if (cinode->writers == 0) {
+ clear_bit(CIFS_INODE_PENDING_WRITERS, &cinode->flags);
+ wake_up_bit(&cinode->flags, CIFS_INODE_PENDING_WRITERS);
+ }
+ spin_unlock(&cinode->writers_lock);
+ goto start;
+ }
+ spin_unlock(&cinode->writers_lock);
+ return 0;
+}
+
+void cifs_put_writer(struct cifsInodeInfo *cinode)
+{
+ spin_lock(&cinode->writers_lock);
+ cinode->writers--;
+ if (cinode->writers == 0) {
+ clear_bit(CIFS_INODE_PENDING_WRITERS, &cinode->flags);
+ wake_up_bit(&cinode->flags, CIFS_INODE_PENDING_WRITERS);
+ }
+ spin_unlock(&cinode->writers_lock);
+}
+
+void cifs_done_oplock_break(struct cifsInodeInfo *cinode)
+{
+ clear_bit(CIFS_INODE_PENDING_OPLOCK_BREAK, &cinode->flags);
+ wake_up_bit(&cinode->flags, CIFS_INODE_PENDING_OPLOCK_BREAK);
+}
+
bool
backup_cred(struct cifs_sb_info *cifs_sb)
{
diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c
index 049884552e7..6834b9c3bec 100644
--- a/fs/cifs/netmisc.c
+++ b/fs/cifs/netmisc.c
@@ -795,8 +795,8 @@ cifs_print_status(__u32 status_code)
while (nt_errs[idx].nt_errstr != NULL) {
if (((nt_errs[idx].nt_errcode) & 0xFFFFFF) ==
(status_code & 0xFFFFFF)) {
- printk(KERN_NOTICE "Status code returned 0x%08x %s\n",
- status_code, nt_errs[idx].nt_errstr);
+ pr_notice("Status code returned 0x%08x %s\n",
+ status_code, nt_errs[idx].nt_errstr);
}
idx++;
}
@@ -941,8 +941,9 @@ cifs_UnixTimeToNT(struct timespec t)
return (u64) t.tv_sec * 10000000 + t.tv_nsec/100 + NTFS_TIME_OFFSET;
}
-static int total_days_of_prev_months[] =
-{0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
+static const int total_days_of_prev_months[] = {
+ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
+};
struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time, int offset)
{
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 5940ecabbe6..b15862e0f68 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -749,7 +749,7 @@ static int cifs_filldir(char *find_entry, struct file *file,
}
if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) &&
- CIFSCouldBeMFSymlink(&fattr))
+ couldbe_mf_symlink(&fattr))
/*
* trying to get the type and mode can be slow,
* so just call those regular files for now, and mark
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index 5f5ba0dc2ee..d1fdfa84870 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -372,6 +372,16 @@ coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
return 0;
}
+static void
+cifs_downgrade_oplock(struct TCP_Server_Info *server,
+ struct cifsInodeInfo *cinode, bool set_level2)
+{
+ if (set_level2)
+ cifs_set_oplock_level(cinode, OPLOCK_READ);
+ else
+ cifs_set_oplock_level(cinode, 0);
+}
+
static bool
cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server,
char *buf, int malformed)
@@ -560,17 +570,24 @@ cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
if (!rc && (le32_to_cpu(data->Attributes) & ATTR_REPARSE)) {
int tmprc;
int oplock = 0;
- __u16 netfid;
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
+
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = FILE_READ_ATTRIBUTES;
+ oparms.create_options = 0;
+ oparms.disposition = FILE_OPEN;
+ oparms.path = full_path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
/* Need to check if this is a symbolic link or not */
- tmprc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
- FILE_READ_ATTRIBUTES, 0, &netfid, &oplock,
- NULL, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ tmprc = CIFS_open(xid, &oparms, &oplock, NULL);
if (tmprc == -EOPNOTSUPP)
*symlink = true;
else
- CIFSSMBClose(xid, tcon, netfid);
+ CIFSSMBClose(xid, tcon, fid.netfid);
}
return rc;
@@ -705,12 +722,7 @@ cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
oparms->cifs_sb->local_nls,
oparms->cifs_sb->mnt_cifs_flags
& CIFS_MOUNT_MAP_SPECIAL_CHR);
- return CIFSSMBOpen(xid, oparms->tcon, oparms->path,
- oparms->disposition, oparms->desired_access,
- oparms->create_options, &oparms->fid->netfid, oplock,
- buf, oparms->cifs_sb->local_nls,
- oparms->cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
+ return CIFS_open(xid, oparms, oplock, buf);
}
static void
@@ -761,8 +773,9 @@ smb_set_file_info(struct inode *inode, const char *full_path,
{
int oplock = 0;
int rc;
- __u16 netfid;
__u32 netpid;
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
struct cifsFileInfo *open_file;
struct cifsInodeInfo *cinode = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
@@ -772,7 +785,7 @@ smb_set_file_info(struct inode *inode, const char *full_path,
/* if the file is already open for write, just use that fileid */
open_file = find_writable_file(cinode, true);
if (open_file) {
- netfid = open_file->fid.netfid;
+ fid.netfid = open_file->fid.netfid;
netpid = open_file->pid;
tcon = tlink_tcon(open_file->tlink);
goto set_via_filehandle;
@@ -796,12 +809,17 @@ smb_set_file_info(struct inode *inode, const char *full_path,
goto out;
}
- cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
- rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
- SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
- &netfid, &oplock, NULL, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES;
+ oparms.create_options = CREATE_NOT_DIR;
+ oparms.disposition = FILE_OPEN;
+ oparms.path = full_path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+ cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
+ rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (rc != 0) {
if (rc == -EIO)
rc = -EINVAL;
@@ -811,12 +829,12 @@ smb_set_file_info(struct inode *inode, const char *full_path,
netpid = current->tgid;
set_via_filehandle:
- rc = CIFSSMBSetFileInfo(xid, tcon, buf, netfid, netpid);
+ rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid);
if (!rc)
cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
if (open_file == NULL)
- CIFSSMBClose(xid, tcon, netfid);
+ CIFSSMBClose(xid, tcon, fid.netfid);
else
cifsFileInfo_put(open_file);
out:
@@ -908,33 +926,80 @@ cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
}
static int
+cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon,
+ const unsigned char *searchName, char **symlinkinfo,
+ const struct nls_table *nls_codepage)
+{
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ int rc;
+ unsigned int num_referrals = 0;
+ struct dfs_info3_param *referrals = NULL;
+
+ rc = get_dfs_path(xid, tcon->ses, searchName, nls_codepage,
+ &num_referrals, &referrals, 0);
+
+ if (!rc && num_referrals > 0) {
+ *symlinkinfo = kstrndup(referrals->node_name,
+ strlen(referrals->node_name),
+ GFP_KERNEL);
+ if (!*symlinkinfo)
+ rc = -ENOMEM;
+ free_dfs_info_array(referrals, num_referrals);
+ }
+ return rc;
+#else /* No DFS support */
+ return -EREMOTE;
+#endif
+}
+
+static int
cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
const char *full_path, char **target_path,
struct cifs_sb_info *cifs_sb)
{
int rc;
int oplock = 0;
- __u16 netfid;
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
- rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
- FILE_READ_ATTRIBUTES, OPEN_REPARSE_POINT, &netfid,
- &oplock, NULL, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ /* Check for unix extensions */
+ if (cap_unix(tcon->ses)) {
+ rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, target_path,
+ cifs_sb->local_nls);
+ if (rc == -EREMOTE)
+ rc = cifs_unix_dfs_readlink(xid, tcon, full_path,
+ target_path,
+ cifs_sb->local_nls);
+
+ goto out;
+ }
+
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = FILE_READ_ATTRIBUTES;
+ oparms.create_options = OPEN_REPARSE_POINT;
+ oparms.disposition = FILE_OPEN;
+ oparms.path = full_path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (rc)
- return rc;
+ goto out;
- rc = CIFSSMBQuerySymLink(xid, tcon, netfid, target_path,
+ rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path,
cifs_sb->local_nls);
- if (rc) {
- CIFSSMBClose(xid, tcon, netfid);
- return rc;
- }
+ if (rc)
+ goto out_close;
convert_delimiter(*target_path, '/');
- CIFSSMBClose(xid, tcon, netfid);
- cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
+out_close:
+ CIFSSMBClose(xid, tcon, fid.netfid);
+out:
+ if (!rc)
+ cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
return rc;
}
@@ -964,6 +1029,7 @@ struct smb_version_operations smb1_operations = {
.clear_stats = cifs_clear_stats,
.print_stats = cifs_print_stats,
.is_oplock_break = is_valid_oplock_break,
+ .downgrade_oplock = cifs_downgrade_oplock,
.check_trans2 = cifs_check_trans2,
.need_neg = cifs_need_neg,
.negotiate = cifs_negotiate,
@@ -1009,8 +1075,18 @@ struct smb_version_operations smb1_operations = {
.mand_lock = cifs_mand_lock,
.mand_unlock_range = cifs_unlock_range,
.push_mand_locks = cifs_push_mandatory_locks,
- .query_mf_symlink = open_query_close_cifs_symlink,
+ .query_mf_symlink = cifs_query_mf_symlink,
+ .create_mf_symlink = cifs_create_mf_symlink,
.is_read_op = cifs_is_read_op,
+#ifdef CONFIG_CIFS_XATTR
+ .query_all_EAs = CIFSSMBQAllEAs,
+ .set_EA = CIFSSMBSetEA,
+#endif /* CIFS_XATTR */
+#ifdef CONFIG_CIFS_ACL
+ .get_acl = get_cifs_acl,
+ .get_acl_by_fid = get_cifs_acl_by_fid,
+ .set_acl = set_cifs_acl,
+#endif /* CIFS_ACL */
};
struct smb_version_values smb1_values = {
diff --git a/fs/cifs/smb2glob.h b/fs/cifs/smb2glob.h
index c38350851b0..bc0bb9c34f7 100644
--- a/fs/cifs/smb2glob.h
+++ b/fs/cifs/smb2glob.h
@@ -57,4 +57,7 @@
#define SMB2_CMACAES_SIZE (16)
#define SMB3_SIGNKEY_SIZE (16)
+/* Maximum buffer size value we can send with 1 credit */
+#define SMB2_MAX_BUFFER_SIZE 65536
+
#endif /* _SMB2_GLOB_H */
diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c
index fb3966265b6..b8021fde987 100644
--- a/fs/cifs/smb2misc.c
+++ b/fs/cifs/smb2misc.c
@@ -575,9 +575,21 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
else
cfile->oplock_break_cancelled = false;
- server->ops->set_oplock_level(cinode,
- rsp->OplockLevel ? SMB2_OPLOCK_LEVEL_II : 0,
- 0, NULL);
+ set_bit(CIFS_INODE_PENDING_OPLOCK_BREAK,
+ &cinode->flags);
+
+ /*
+ * Set flag if the server downgrades the oplock
+ * to L2 else clear.
+ */
+ if (rsp->OplockLevel)
+ set_bit(
+ CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
+ &cinode->flags);
+ else
+ clear_bit(
+ CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
+ &cinode->flags);
queue_work(cifsiod_wq, &cfile->oplock_break);
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 757da3e54d3..787844bde38 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -182,11 +182,8 @@ smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
/* start with specified wsize, or default */
wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
wsize = min_t(unsigned int, wsize, server->max_write);
- /*
- * limit write size to 2 ** 16, because we don't support multicredit
- * requests now.
- */
- wsize = min_t(unsigned int, wsize, 2 << 15);
+ /* set it to the maximum buffer size value we can send with 1 credit */
+ wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
return wsize;
}
@@ -200,11 +197,8 @@ smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
/* start with specified rsize, or default */
rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
rsize = min_t(unsigned int, rsize, server->max_read);
- /*
- * limit write size to 2 ** 16, because we don't support multicredit
- * requests now.
- */
- rsize = min_t(unsigned int, rsize, 2 << 15);
+ /* set it to the maximum buffer size value we can send with 1 credit */
+ rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
return rsize;
}
@@ -911,6 +905,17 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
}
static void
+smb2_downgrade_oplock(struct TCP_Server_Info *server,
+ struct cifsInodeInfo *cinode, bool set_level2)
+{
+ if (set_level2)
+ server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
+ 0, NULL);
+ else
+ server->ops->set_oplock_level(cinode, 0, 0, NULL);
+}
+
+static void
smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
unsigned int epoch, bool *purge_cache)
{
@@ -1042,6 +1047,7 @@ smb2_create_lease_buf(u8 *lease_key, u8 oplock)
buf->ccontext.NameOffset = cpu_to_le16(offsetof
(struct create_lease, Name));
buf->ccontext.NameLength = cpu_to_le16(4);
+ /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
buf->Name[0] = 'R';
buf->Name[1] = 'q';
buf->Name[2] = 'L';
@@ -1068,6 +1074,7 @@ smb3_create_lease_buf(u8 *lease_key, u8 oplock)
buf->ccontext.NameOffset = cpu_to_le16(offsetof
(struct create_lease_v2, Name));
buf->ccontext.NameLength = cpu_to_le16(4);
+ /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
buf->Name[0] = 'R';
buf->Name[1] = 'q';
buf->Name[2] = 'L';
@@ -1116,6 +1123,7 @@ struct smb_version_operations smb20_operations = {
.clear_stats = smb2_clear_stats,
.print_stats = smb2_print_stats,
.is_oplock_break = smb2_is_valid_oplock_break,
+ .downgrade_oplock = smb2_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
.negotiate_wsize = smb2_negotiate_wsize,
@@ -1190,6 +1198,7 @@ struct smb_version_operations smb21_operations = {
.clear_stats = smb2_clear_stats,
.print_stats = smb2_print_stats,
.is_oplock_break = smb2_is_valid_oplock_break,
+ .downgrade_oplock = smb2_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
.negotiate_wsize = smb2_negotiate_wsize,
@@ -1265,6 +1274,7 @@ struct smb_version_operations smb30_operations = {
.print_stats = smb2_print_stats,
.dump_share_caps = smb2_dump_share_caps,
.is_oplock_break = smb2_is_valid_oplock_break,
+ .downgrade_oplock = smb2_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
.negotiate_wsize = smb2_negotiate_wsize,
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 2013234b73a..b0b260dbb19 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -375,7 +375,12 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses)
req->Capabilities = cpu_to_le32(ses->server->vals->req_capabilities);
- memcpy(req->ClientGUID, cifs_client_guid, SMB2_CLIENT_GUID_SIZE);
+ /* ClientGUID must be zero for SMB2.02 dialect */
+ if (ses->server->vals->protocol_id == SMB20_PROT_ID)
+ memset(req->ClientGUID, 0, SMB2_CLIENT_GUID_SIZE);
+ else
+ memcpy(req->ClientGUID, server->client_guid,
+ SMB2_CLIENT_GUID_SIZE);
iov[0].iov_base = (char *)req;
/* 4 for rfc1002 length field */
@@ -413,7 +418,9 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses)
/* SMB2 only has an extended negflavor */
server->negflavor = CIFS_NEGFLAVOR_EXTENDED;
- server->maxBuf = le32_to_cpu(rsp->MaxTransactSize);
+ /* set it to the maximum buffer size value we can send with 1 credit */
+ server->maxBuf = min_t(unsigned int, le32_to_cpu(rsp->MaxTransactSize),
+ SMB2_MAX_BUFFER_SIZE);
server->max_read = le32_to_cpu(rsp->MaxReadSize);
server->max_write = le32_to_cpu(rsp->MaxWriteSize);
/* BB Do we need to validate the SecurityMode? */
@@ -476,7 +483,8 @@ int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon)
vneg_inbuf.Capabilities =
cpu_to_le32(tcon->ses->server->vals->req_capabilities);
- memcpy(vneg_inbuf.Guid, cifs_client_guid, SMB2_CLIENT_GUID_SIZE);
+ memcpy(vneg_inbuf.Guid, tcon->ses->server->client_guid,
+ SMB2_CLIENT_GUID_SIZE);
if (tcon->ses->sign)
vneg_inbuf.SecurityMode =
@@ -964,6 +972,7 @@ create_durable_buf(void)
buf->ccontext.NameOffset = cpu_to_le16(offsetof
(struct create_durable, Name));
buf->ccontext.NameLength = cpu_to_le16(4);
+ /* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DHnQ" */
buf->Name[0] = 'D';
buf->Name[1] = 'H';
buf->Name[2] = 'n';
@@ -988,6 +997,7 @@ create_reconnect_durable_buf(struct cifs_fid *fid)
buf->ccontext.NameLength = cpu_to_le16(4);
buf->Data.Fid.PersistentFileId = fid->persistent_fid;
buf->Data.Fid.VolatileFileId = fid->volatile_fid;
+ /* SMB2_CREATE_DURABLE_HANDLE_RECONNECT is "DHnC" */
buf->Name[0] = 'D';
buf->Name[1] = 'H';
buf->Name[2] = 'n';
@@ -1087,6 +1097,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
int rc = 0;
unsigned int num_iovecs = 2;
__u32 file_attributes = 0;
+ char *dhc_buf = NULL, *lc_buf = NULL;
cifs_dbg(FYI, "create/open\n");
@@ -1153,6 +1164,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
kfree(copy_path);
return rc;
}
+ lc_buf = iov[num_iovecs-1].iov_base;
}
if (*oplock == SMB2_OPLOCK_LEVEL_BATCH) {
@@ -1167,9 +1179,10 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
if (rc) {
cifs_small_buf_release(req);
kfree(copy_path);
- kfree(iov[num_iovecs-1].iov_base);
+ kfree(lc_buf);
return rc;
}
+ dhc_buf = iov[num_iovecs-1].iov_base;
}
rc = SendReceive2(xid, ses, iov, num_iovecs, &resp_buftype, 0);
@@ -1201,6 +1214,8 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
*oplock = rsp->OplockLevel;
creat_exit:
kfree(copy_path);
+ kfree(lc_buf);
+ kfree(dhc_buf);
free_rsp_buf(resp_buftype, rsp);
return rc;
}
@@ -1350,7 +1365,6 @@ SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid)
{
int rc;
- char *res_key = NULL;
struct compress_ioctl fsctl_input;
char *ret_data = NULL;
@@ -1363,7 +1377,6 @@ SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
2 /* in data len */, &ret_data /* out data */, NULL);
cifs_dbg(FYI, "set compression rc %d\n", rc);
- kfree(res_key);
return rc;
}
@@ -1890,7 +1903,8 @@ smb2_writev_callback(struct mid_q_entry *mid)
/* smb2_async_writev - send an async write, and set up mid to handle result */
int
-smb2_async_writev(struct cifs_writedata *wdata)
+smb2_async_writev(struct cifs_writedata *wdata,
+ void (*release)(struct kref *kref))
{
int rc = -EACCES;
struct smb2_write_req *req = NULL;
@@ -1938,7 +1952,7 @@ smb2_async_writev(struct cifs_writedata *wdata)
smb2_writev_callback, wdata, 0);
if (rc) {
- kref_put(&wdata->refcount, cifs_writedata_release);
+ kref_put(&wdata->refcount, release);
cifs_stats_fail_inc(tcon, SMB2_WRITE_HE);
}
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h