/*
* fs/cifs/cifsfs.c
*
- * Copyright (C) International Business Machines Corp., 2002,2007
+ * Copyright (C) International Business Machines Corp., 2002,2008
* Author(s): Steve French (sfrench@us.ibm.com)
*
* Common Internet FileSystem (CIFS) client
#include <linux/delay.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
+#include <linux/smp_lock.h>
#include "cifsfs.h"
#include "cifspdu.h"
#define DECLARE_GLOBALS_HERE
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
#include <linux/mm.h>
+#include <linux/key-type.h>
+#include "dns_resolve.h"
+#include "cifs_spnego.h"
#define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */
#ifdef CONFIG_CIFS_QUOTA
static struct quotactl_ops cifs_quotactl_ops;
#endif /* QUOTA */
-#ifdef CONFIG_CIFS_EXPERIMENTAL
-extern struct export_operations cifs_export_ops;
-#endif /* EXPERIMENTAL */
-
int cifsFYI = 0;
int cifsERROR = 1;
int traceSMB = 0;
extern struct task_struct *oplockThread; /* remove sparse warning */
struct task_struct *oplockThread = NULL;
/* extern struct task_struct * dnotifyThread; remove sparse warning */
-static struct task_struct *dnotifyThread = NULL;
static const struct super_operations cifs_super_ops;
unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE;
module_param(CIFSMaxBufSize, int, 0);
if (cifs_sb == NULL)
return -ENOMEM;
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ /* copy mount params to sb for use in submounts */
+ /* BB: should we move this after the mount so we
+ * do not have to do the copy on failed mounts?
+ * BB: May be it is better to do simple copy before
+ * complex operation (mount), and in case of fail
+ * just exit instead of doing mount and attempting
+ * undo it if this copy fails?*/
+ if (data) {
+ int len = strlen(data);
+ cifs_sb->mountdata = kzalloc(len + 1, GFP_KERNEL);
+ if (cifs_sb->mountdata == NULL) {
+ kfree(sb->s_fs_info);
+ sb->s_fs_info = NULL;
+ return -ENOMEM;
+ }
+ strncpy(cifs_sb->mountdata, data, len + 1);
+ cifs_sb->mountdata[len] = '\0';
+ }
+#endif
+
rc = cifs_mount(sb, cifs_sb, data, devname);
if (rc) {
#endif
sb->s_blocksize = CIFS_MAX_MSGSIZE;
sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */
- inode = iget(sb, ROOT_I);
+ inode = cifs_iget(sb, ROOT_I);
- if (!inode) {
- rc = -ENOMEM;
+ if (IS_ERR(inode)) {
+ rc = PTR_ERR(inode);
+ inode = NULL;
goto out_no_root;
}
if (inode)
iput(inode);
+ cifs_umount(sb, cifs_sb);
+
out_mount_failed:
if (cifs_sb) {
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ if (cifs_sb->mountdata) {
+ kfree(cifs_sb->mountdata);
+ cifs_sb->mountdata = NULL;
+ }
+#endif
if (cifs_sb->local_nls)
unload_nls(cifs_sb->local_nls);
kfree(cifs_sb);
return;
}
rc = cifs_umount(sb, cifs_sb);
- if (rc) {
+ if (rc)
cERROR(1, ("cifs_umount failed with return code %d", rc));
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ if (cifs_sb->mountdata) {
+ kfree(cifs_sb->mountdata);
+ cifs_sb->mountdata = NULL;
}
+#endif
+
unload_nls(cifs_sb->local_nls);
kfree(cifs_sb);
return;
cifs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
- int xid;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+ struct cifsTconInfo *tcon = cifs_sb->tcon;
int rc = -EOPNOTSUPP;
- struct cifs_sb_info *cifs_sb;
- struct cifsTconInfo *pTcon;
+ int xid;
xid = GetXid();
- cifs_sb = CIFS_SB(sb);
- pTcon = cifs_sb->tcon;
-
buf->f_type = CIFS_MAGIC_NUMBER;
- /* instead could get the real value via SMB_QUERY_FS_ATTRIBUTE_INFO */
- buf->f_namelen = PATH_MAX; /* PATH_MAX may be too long - it would
- presumably be total path, but note
- that some servers (includinng Samba 3)
- have a shorter maximum path */
+ /*
+ * PATH_MAX may be too long - it would presumably be total path,
+ * but note that some servers (includinng Samba 3) have a shorter
+ * maximum path.
+ *
+ * Instead could get the real value via SMB_QUERY_FS_ATTRIBUTE_INFO.
+ */
+ buf->f_namelen = PATH_MAX;
buf->f_files = 0; /* undefined */
buf->f_ffree = 0; /* unlimited */
-/* BB we could add a second check for a QFS Unix capability bit */
-/* BB FIXME check CIFS_POSIX_EXTENSIONS Unix cap first FIXME BB */
- if ((pTcon->ses->capabilities & CAP_UNIX) && (CIFS_POSIX_EXTENSIONS &
- le64_to_cpu(pTcon->fsUnixInfo.Capability)))
- rc = CIFSSMBQFSPosixInfo(xid, pTcon, buf);
-
- /* Only need to call the old QFSInfo if failed
- on newer one */
- if (rc)
- if (pTcon->ses->capabilities & CAP_NT_SMBS)
- rc = CIFSSMBQFSInfo(xid, pTcon, buf); /* not supported by OS2 */
-
- /* Some old Windows servers also do not support level 103, retry with
- older level one if old server failed the previous call or we
- bypassed it because we detected that this was an older LANMAN sess */
+ /*
+ * We could add a second check for a QFS Unix capability bit
+ */
+ if ((tcon->ses->capabilities & CAP_UNIX) &&
+ (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
+ rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
+
+ /*
+ * Only need to call the old QFSInfo if failed on newer one,
+ * e.g. by OS/2.
+ **/
+ if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
+ rc = CIFSSMBQFSInfo(xid, tcon, buf);
+
+ /*
+ * Some old Windows servers also do not support level 103, retry with
+ * older level one if old server failed the previous call or we
+ * bypassed it because we detected that this was an older LANMAN sess
+ */
if (rc)
- rc = SMBOldQFSInfo(xid, pTcon, buf);
- /* int f_type;
- __fsid_t f_fsid;
- int f_namelen; */
- /* BB get from info in tcon struct at mount time call to QFSAttrInfo */
+ rc = SMBOldQFSInfo(xid, tcon, buf);
+
FreeXid(xid);
- return 0; /* always return success? what if volume is no
- longer available? */
+ return 0;
}
-static int cifs_permission(struct inode *inode, int mask, struct nameidata *nd)
+static int cifs_permission(struct inode *inode, int mask)
{
struct cifs_sb_info *cifs_sb;
cifs_sb = CIFS_SB(inode->i_sb);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) {
- return 0;
+ if ((mask & MAY_EXEC) && !execute_ok(inode))
+ return -EACCES;
+ else
+ return 0;
} else /* file mode might have been restricted at mount time
on the client (above and beyond ACL on servers) for
servers which do not support setting and viewing mode bits,
cifs_inode->cifsAttrs = 0x20; /* default */
atomic_set(&cifs_inode->inUse, 0);
cifs_inode->time = 0;
+ cifs_inode->write_behind_rc = 0;
/* Until the file is open and we have gotten oplock
info back from the server, can not assume caching of
file data or metadata */
- cifs_inode->clientCanCacheRead = FALSE;
- cifs_inode->clientCanCacheAll = FALSE;
+ cifs_inode->clientCanCacheRead = false;
+ cifs_inode->clientCanCacheAll = false;
+ cifs_inode->delete_pending = false;
cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */
+ cifs_inode->server_eof = 0;
/* Can not set i_flags here - they get immediately overwritten
to zero by the VFS */
cifs_show_options(struct seq_file *s, struct vfsmount *m)
{
struct cifs_sb_info *cifs_sb;
+ struct cifsTconInfo *tcon;
+ struct TCP_Server_Info *server;
cifs_sb = CIFS_SB(m->mnt_sb);
if (cifs_sb) {
- if (cifs_sb->tcon) {
-/* BB add prepath to mount options displayed */
+ tcon = cifs_sb->tcon;
+ if (tcon) {
seq_printf(s, ",unc=%s", cifs_sb->tcon->treeName);
- if (cifs_sb->tcon->ses) {
- if (cifs_sb->tcon->ses->userName)
+ if (tcon->ses) {
+ if (tcon->ses->userName)
seq_printf(s, ",username=%s",
- cifs_sb->tcon->ses->userName);
- if (cifs_sb->tcon->ses->domainName)
+ tcon->ses->userName);
+ if (tcon->ses->domainName)
seq_printf(s, ",domain=%s",
- cifs_sb->tcon->ses->domainName);
+ tcon->ses->domainName);
+ server = tcon->ses->server;
+ if (server) {
+ seq_printf(s, ",addr=");
+ switch (server->addr.sockAddr6.
+ sin6_family) {
+ case AF_INET6:
+ seq_printf(s, "%pI6",
+ &server->addr.sockAddr6.sin6_addr);
+ break;
+ case AF_INET:
+ seq_printf(s, "%pI4",
+ &server->addr.sockAddr.sin_addr.s_addr);
+ break;
+ }
+ }
}
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) ||
+ !(tcon->unix_ext))
+ seq_printf(s, ",uid=%d", cifs_sb->mnt_uid);
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) ||
+ !(tcon->unix_ext))
+ seq_printf(s, ",gid=%d", cifs_sb->mnt_gid);
+ if (!tcon->unix_ext) {
+ seq_printf(s, ",file_mode=0%o,dir_mode=0%o",
+ cifs_sb->mnt_file_mode,
+ cifs_sb->mnt_dir_mode);
+ }
+ if (tcon->seal)
+ seq_printf(s, ",seal");
+ if (tcon->nocase)
+ seq_printf(s, ",nocase");
+ if (tcon->retry)
+ seq_printf(s, ",hard");
}
+ if (cifs_sb->prepath)
+ seq_printf(s, ",prepath=%s", cifs_sb->prepath);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
seq_printf(s, ",posixpaths");
- if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) ||
- !(cifs_sb->tcon->unix_ext))
- seq_printf(s, ",uid=%d", cifs_sb->mnt_uid);
- if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) ||
- !(cifs_sb->tcon->unix_ext))
- seq_printf(s, ",gid=%d", cifs_sb->mnt_gid);
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)
+ seq_printf(s, ",setuids");
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
+ seq_printf(s, ",serverino");
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
+ seq_printf(s, ",directio");
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
+ seq_printf(s, ",nouser_xattr");
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR)
+ seq_printf(s, ",mapchars");
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)
+ seq_printf(s, ",sfu");
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
+ seq_printf(s, ",nobrl");
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
+ seq_printf(s, ",cifsacl");
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
+ seq_printf(s, ",dynperm");
+ if (m->mnt_sb->s_flags & MS_POSIXACL)
+ seq_printf(s, ",acl");
+
seq_printf(s, ",rsize=%d", cifs_sb->rsize);
seq_printf(s, ",wsize=%d", cifs_sb->wsize);
}
xid = GetXid();
if (pTcon) {
cFYI(1, ("set type: 0x%x id: %d", quota_type, qid));
- } else {
- return -EIO;
- }
+ } else
+ rc = -EIO;
FreeXid(xid);
return rc;
xid = GetXid();
if (pTcon) {
cFYI(1, ("set type: 0x%x id: %d", quota_type, qid));
- } else {
+ } else
rc = -EIO;
- }
FreeXid(xid);
return rc;
xid = GetXid();
if (pTcon) {
cFYI(1, ("flags: 0x%x operation: 0x%x", flags, operation));
- } else {
+ } else
rc = -EIO;
- }
FreeXid(xid);
return rc;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct cifsTconInfo *pTcon;
- if (cifs_sb) {
+ if (cifs_sb)
pTcon = cifs_sb->tcon;
- } else {
+ else
return -EIO;
- }
+
xid = GetXid();
if (pTcon) {
cFYI(1, ("pqstats %p", qstats));
- } else {
+ } else
rc = -EIO;
- }
FreeXid(xid);
return rc;
static struct quotactl_ops cifs_quotactl_ops = {
.set_xquota = cifs_xquota_set,
- .get_xquota = cifs_xquota_set,
+ .get_xquota = cifs_xquota_get,
.set_xstate = cifs_xstate_set,
.get_xstate = cifs_xstate_get,
};
#endif
-static void cifs_umount_begin(struct vfsmount *vfsmnt, int flags)
+static void cifs_umount_begin(struct super_block *sb)
{
- struct cifs_sb_info *cifs_sb;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct cifsTconInfo *tcon;
- if (!(flags & MNT_FORCE))
- return;
- cifs_sb = CIFS_SB(vfsmnt->mnt_sb);
if (cifs_sb == NULL)
return;
tcon = cifs_sb->tcon;
if (tcon == NULL)
return;
- down(&tcon->tconSem);
- if (atomic_read(&tcon->useCount) == 1)
+
+ lock_kernel();
+ read_lock(&cifs_tcp_ses_lock);
+ if (tcon->tc_count == 1)
tcon->tidStatus = CifsExiting;
- up(&tcon->tconSem);
+ read_unlock(&cifs_tcp_ses_lock);
/* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */
/* cancel_notify_requests(tcon); */
}
/* BB FIXME - finish add checks for tidStatus BB */
+ unlock_kernel();
return;
}
}
static const struct super_operations cifs_super_ops = {
- .read_inode = cifs_read_inode,
.put_super = cifs_put_super,
.statfs = cifs_statfs,
.alloc_inode = cifs_alloc_inode,
rc = cifs_read_super(sb, data, dev_name, flags & MS_SILENT ? 1 : 0);
if (rc) {
- up_write(&sb->s_umount);
- deactivate_super(sb);
+ deactivate_locked_super(sb);
return rc;
}
sb->s_flags |= MS_ACTIVE;
- return simple_set_mnt(mnt, sb);
+ simple_set_mnt(mnt, sb);
+ return 0;
}
static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
if (retval < 0)
return (loff_t)retval;
}
- return remote_llseek(file, offset, origin);
+ return generic_file_llseek_unlocked(file, offset, origin);
+}
+
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+static int cifs_setlease(struct file *file, long arg, struct file_lock **lease)
+{
+ /* note that this is called by vfs setlease with the BKL held
+ although I doubt that BKL is needed here in cifs */
+ struct inode *inode = file->f_path.dentry->d_inode;
+
+ if (!(S_ISREG(inode->i_mode)))
+ return -EINVAL;
+
+ /* check if file is oplocked */
+ if (((arg == F_RDLCK) &&
+ (CIFS_I(inode)->clientCanCacheRead)) ||
+ ((arg == F_WRLCK) &&
+ (CIFS_I(inode)->clientCanCacheAll)))
+ return generic_setlease(file, arg, lease);
+ else if (CIFS_SB(inode->i_sb)->tcon->local_lease &&
+ !CIFS_I(inode)->clientCanCacheRead)
+ /* If the server claims to support oplock on this
+ file, then we still need to check oplock even
+ if the local_lease mount option is set, but there
+ are servers which do not support oplock for which
+ this mount option may be useful if the user
+ knows that the file won't be changed on the server
+ by anyone else */
+ return generic_setlease(file, arg, lease);
+ else
+ return -EAGAIN;
}
+#endif
-static struct file_system_type cifs_fs_type = {
+struct file_system_type cifs_fs_type = {
.owner = THIS_MODULE,
.name = "cifs",
.get_sb = cifs_get_sb,
.fsync = cifs_fsync,
.flush = cifs_flush,
.mmap = cifs_file_mmap,
- .sendfile = generic_file_sendfile,
+ .splice_read = generic_file_splice_read,
.llseek = cifs_llseek,
#ifdef CONFIG_CIFS_POSIX
- .ioctl = cifs_ioctl,
+ .unlocked_ioctl = cifs_ioctl,
#endif /* CONFIG_CIFS_POSIX */
#ifdef CONFIG_CIFS_EXPERIMENTAL
- .dir_notify = cifs_dir_notify,
+ .setlease = cifs_setlease,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
};
.lock = cifs_lock,
.fsync = cifs_fsync,
.flush = cifs_flush,
- .sendfile = generic_file_sendfile, /* BB removeme BB */
+ .splice_read = generic_file_splice_read,
#ifdef CONFIG_CIFS_POSIX
- .ioctl = cifs_ioctl,
+ .unlocked_ioctl = cifs_ioctl,
#endif /* CONFIG_CIFS_POSIX */
.llseek = cifs_llseek,
#ifdef CONFIG_CIFS_EXPERIMENTAL
- .dir_notify = cifs_dir_notify,
+ .setlease = cifs_setlease,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
};
const struct file_operations cifs_file_nobrl_ops = {
.fsync = cifs_fsync,
.flush = cifs_flush,
.mmap = cifs_file_mmap,
- .sendfile = generic_file_sendfile,
+ .splice_read = generic_file_splice_read,
.llseek = cifs_llseek,
#ifdef CONFIG_CIFS_POSIX
- .ioctl = cifs_ioctl,
+ .unlocked_ioctl = cifs_ioctl,
#endif /* CONFIG_CIFS_POSIX */
#ifdef CONFIG_CIFS_EXPERIMENTAL
- .dir_notify = cifs_dir_notify,
+ .setlease = cifs_setlease,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
};
.release = cifs_close,
.fsync = cifs_fsync,
.flush = cifs_flush,
- .sendfile = generic_file_sendfile, /* BB removeme BB */
+ .splice_read = generic_file_splice_read,
#ifdef CONFIG_CIFS_POSIX
- .ioctl = cifs_ioctl,
+ .unlocked_ioctl = cifs_ioctl,
#endif /* CONFIG_CIFS_POSIX */
.llseek = cifs_llseek,
#ifdef CONFIG_CIFS_EXPERIMENTAL
- .dir_notify = cifs_dir_notify,
+ .setlease = cifs_setlease,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
};
.readdir = cifs_readdir,
.release = cifs_closedir,
.read = generic_read_dir,
-#ifdef CONFIG_CIFS_EXPERIMENTAL
- .dir_notify = cifs_dir_notify,
-#endif /* CONFIG_CIFS_EXPERIMENTAL */
- .ioctl = cifs_ioctl,
+ .unlocked_ioctl = cifs_ioctl,
+ .llseek = generic_file_llseek,
};
static void
-cifs_init_once(void *inode, struct kmem_cache *cachep, unsigned long flags)
+cifs_init_once(void *inode)
{
struct cifsInodeInfo *cifsi = inode;
cifs_init_inodecache(void)
{
cifs_inode_cachep = kmem_cache_create("cifs_inode_cache",
- sizeof (struct cifsInodeInfo),
+ sizeof(struct cifsInodeInfo),
0, (SLAB_RECLAIM_ACCOUNT|
SLAB_MEM_SPREAD),
- cifs_init_once, NULL);
+ cifs_init_once);
if (cifs_inode_cachep == NULL)
return -ENOMEM;
cifs_req_cachep = kmem_cache_create("cifs_request",
CIFSMaxBufSize +
MAX_CIFS_HDR_SIZE, 0,
- SLAB_HWCACHE_ALIGN, NULL, NULL);
+ SLAB_HWCACHE_ALIGN, NULL);
if (cifs_req_cachep == NULL)
return -ENOMEM;
alloc of large cifs buffers even when page debugging is on */
cifs_sm_req_cachep = kmem_cache_create("cifs_small_rq",
MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN,
- NULL, NULL);
+ NULL);
if (cifs_sm_req_cachep == NULL) {
mempool_destroy(cifs_req_poolp);
kmem_cache_destroy(cifs_req_cachep);
cifs_init_mids(void)
{
cifs_mid_cachep = kmem_cache_create("cifs_mpx_ids",
- sizeof (struct mid_q_entry), 0,
- SLAB_HWCACHE_ALIGN, NULL, NULL);
+ sizeof(struct mid_q_entry), 0,
+ SLAB_HWCACHE_ALIGN, NULL);
if (cifs_mid_cachep == NULL)
return -ENOMEM;
}
cifs_oplock_cachep = kmem_cache_create("cifs_oplock_structs",
- sizeof (struct oplock_q_entry), 0,
- SLAB_HWCACHE_ALIGN, NULL, NULL);
+ sizeof(struct oplock_q_entry), 0,
+ SLAB_HWCACHE_ALIGN, NULL);
if (cifs_oplock_cachep == NULL) {
mempool_destroy(cifs_mid_poolp);
kmem_cache_destroy(cifs_mid_cachep);
struct cifsTconInfo *pTcon;
struct inode *inode;
__u16 netfid;
- int rc;
+ int rc, waitrc = 0;
+ set_freezable();
do {
if (try_to_freeze())
continue;
schedule_timeout(39*HZ);
} else {
oplock_item = list_entry(GlobalOplock_Q.next,
- struct oplock_q_entry, qhead);
- if (oplock_item) {
- cFYI(1, ("found oplock item to write out"));
- pTcon = oplock_item->tcon;
- inode = oplock_item->pinode;
- netfid = oplock_item->netfid;
- spin_unlock(&GlobalMid_Lock);
- DeleteOplockQEntry(oplock_item);
- /* can not grab inode sem here since it would
+ struct oplock_q_entry, qhead);
+ cFYI(1, ("found oplock item to write out"));
+ pTcon = oplock_item->tcon;
+ inode = oplock_item->pinode;
+ netfid = oplock_item->netfid;
+ spin_unlock(&GlobalMid_Lock);
+ DeleteOplockQEntry(oplock_item);
+ /* can not grab inode sem here since it would
deadlock when oplock received on delete
since vfs_unlink holds the i_mutex across
the call */
- /* mutex_lock(&inode->i_mutex);*/
- if (S_ISREG(inode->i_mode)) {
- rc = filemap_fdatawrite(inode->i_mapping);
- if (CIFS_I(inode)->clientCanCacheRead
- == 0) {
- filemap_fdatawait(inode->i_mapping);
- invalidate_remote_inode(inode);
- }
- } else
- rc = 0;
- /* mutex_unlock(&inode->i_mutex);*/
- if (rc)
- CIFS_I(inode)->write_behind_rc = rc;
- cFYI(1, ("Oplock flush inode %p rc %d",
- inode, rc));
+ /* mutex_lock(&inode->i_mutex);*/
+ if (S_ISREG(inode->i_mode)) {
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+ if (CIFS_I(inode)->clientCanCacheAll == 0)
+ break_lease(inode, FMODE_READ);
+ else if (CIFS_I(inode)->clientCanCacheRead == 0)
+ break_lease(inode, FMODE_WRITE);
+#endif
+ rc = filemap_fdatawrite(inode->i_mapping);
+ if (CIFS_I(inode)->clientCanCacheRead == 0) {
+ waitrc = filemap_fdatawait(
+ inode->i_mapping);
+ invalidate_remote_inode(inode);
+ }
+ if (rc == 0)
+ rc = waitrc;
+ } else
+ rc = 0;
+ /* mutex_unlock(&inode->i_mutex);*/
+ if (rc)
+ CIFS_I(inode)->write_behind_rc = rc;
+ cFYI(1, ("Oplock flush inode %p rc %d",
+ inode, rc));
/* releasing stale oplock after recent reconnect
of smb session using a now incorrect file
not bother sending an oplock release if session
to server still is disconnected since oplock
already released by the server in that case */
- if (pTcon->tidStatus != CifsNeedReconnect) {
- rc = CIFSSMBLock(0, pTcon, netfid,
- 0 /* len */ , 0 /* offset */, 0,
- 0, LOCKING_ANDX_OPLOCK_RELEASE,
- 0 /* wait flag */);
- cFYI(1,
- ("Oplock release rc = %d ", rc));
- }
- } else
- spin_unlock(&GlobalMid_Lock);
+ if (!pTcon->need_reconnect) {
+ rc = CIFSSMBLock(0, pTcon, netfid,
+ 0 /* len */ , 0 /* offset */, 0,
+ 0, LOCKING_ANDX_OPLOCK_RELEASE,
+ false /* wait flag */);
+ cFYI(1, ("Oplock release rc = %d", rc));
+ }
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(1); /* yield in case q were corrupt */
}
return 0;
}
-static int cifs_dnotify_thread(void *dummyarg)
-{
- struct list_head *tmp;
- struct cifsSesInfo *ses;
-
- do {
- if (try_to_freeze())
- continue;
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(15*HZ);
- read_lock(&GlobalSMBSeslock);
- /* check if any stuck requests that need
- to be woken up and wakeq so the
- thread can wake up and error out */
- list_for_each(tmp, &GlobalSMBSessionList) {
- ses = list_entry(tmp, struct cifsSesInfo,
- cifsSessionList);
- if (ses && ses->server &&
- atomic_read(&ses->server->inFlight))
- wake_up_all(&ses->server->response_q);
- }
- read_unlock(&GlobalSMBSeslock);
- } while (!kthread_should_stop());
-
- return 0;
-}
-
static int __init
init_cifs(void)
{
int rc = 0;
-#ifdef CONFIG_PROC_FS
cifs_proc_init();
-#endif
-/* INIT_LIST_HEAD(&GlobalServerList);*/ /* BB not implemented yet */
- INIT_LIST_HEAD(&GlobalSMBSessionList);
- INIT_LIST_HEAD(&GlobalTreeConnectionList);
+ INIT_LIST_HEAD(&cifs_tcp_ses_list);
INIT_LIST_HEAD(&GlobalOplock_Q);
#ifdef CONFIG_CIFS_EXPERIMENTAL
INIT_LIST_HEAD(&GlobalDnotifyReqList);
GlobalMaxActiveXid = 0;
memset(Local_System_Name, 0, 15);
rwlock_init(&GlobalSMBSeslock);
+ rwlock_init(&cifs_tcp_ses_lock);
spin_lock_init(&GlobalMid_Lock);
if (cifs_max_pending < 2) {
rc = register_filesystem(&cifs_fs_type);
if (rc)
goto out_destroy_request_bufs;
-
+#ifdef CONFIG_CIFS_UPCALL
+ rc = register_key_type(&cifs_spnego_key_type);
+ if (rc)
+ goto out_unregister_filesystem;
+#endif
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ rc = register_key_type(&key_type_dns_resolver);
+ if (rc)
+ goto out_unregister_key_type;
+#endif
oplockThread = kthread_run(cifs_oplock_thread, NULL, "cifsoplockd");
if (IS_ERR(oplockThread)) {
rc = PTR_ERR(oplockThread);
cERROR(1, ("error %d create oplock thread", rc));
- goto out_unregister_filesystem;
- }
-
- dnotifyThread = kthread_run(cifs_dnotify_thread, NULL, "cifsdnotifyd");
- if (IS_ERR(dnotifyThread)) {
- rc = PTR_ERR(dnotifyThread);
- cERROR(1, ("error %d create dnotify thread", rc));
- goto out_stop_oplock_thread;
+ goto out_unregister_dfs_key_type;
}
return 0;
- out_stop_oplock_thread:
- kthread_stop(oplockThread);
+ out_unregister_dfs_key_type:
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ unregister_key_type(&key_type_dns_resolver);
+ out_unregister_key_type:
+#endif
+#ifdef CONFIG_CIFS_UPCALL
+ unregister_key_type(&cifs_spnego_key_type);
out_unregister_filesystem:
+#endif
unregister_filesystem(&cifs_fs_type);
out_destroy_request_bufs:
cifs_destroy_request_bufs();
out_destroy_inodecache:
cifs_destroy_inodecache();
out_clean_proc:
-#ifdef CONFIG_PROC_FS
cifs_proc_clean();
-#endif
return rc;
}
static void __exit
exit_cifs(void)
{
- cFYI(0, ("exit_cifs"));
-#ifdef CONFIG_PROC_FS
+ cFYI(DBG2, ("exit_cifs"));
cifs_proc_clean();
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ cifs_dfs_release_automount_timer();
+ unregister_key_type(&key_type_dns_resolver);
+#endif
+#ifdef CONFIG_CIFS_UPCALL
+ unregister_key_type(&cifs_spnego_key_type);
#endif
unregister_filesystem(&cifs_fs_type);
cifs_destroy_inodecache();
cifs_destroy_mids();
cifs_destroy_request_bufs();
kthread_stop(oplockThread);
- kthread_stop(dnotifyThread);
}
MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>");