/*
* fs/cifs/cifsfs.c
*
- * Copyright (C) International Business Machines Corp., 2002,2004
+ * Copyright (C) International Business Machines Corp., 2002,2008
* Author(s): Steve French (sfrench@us.ibm.com)
*
* Common Internet FileSystem (CIFS) client
#include <linux/mempool.h>
#include <linux/delay.h>
#include <linux/kthread.h>
+#include <linux/freezer.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
+#endif /* QUOTA */
int cifsFYI = 0;
int cifsERROR = 1;
unsigned int extended_security = CIFSSEC_DEF;
/* unsigned int ntlmv2_support = 0; */
unsigned int sign_CIFS_PDUs = 1;
-extern struct task_struct * oplockThread; /* remove sparse warning */
-struct task_struct * oplockThread = NULL;
-extern struct task_struct * dnotifyThread; /* remove sparse warning */
-struct task_struct * dnotifyThread = NULL;
-static struct super_operations cifs_super_ops;
+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);
-MODULE_PARM_DESC(CIFSMaxBufSize,"Network buffer size (not including header). Default: 16384 Range: 8192 to 130048");
+MODULE_PARM_DESC(CIFSMaxBufSize, "Network buffer size (not including header). "
+ "Default: 16384 Range: 8192 to 130048");
unsigned int cifs_min_rcv = CIFS_MIN_RCV_POOL;
module_param(cifs_min_rcv, int, 0);
-MODULE_PARM_DESC(cifs_min_rcv,"Network buffers in pool. Default: 4 Range: 1 to 64");
+MODULE_PARM_DESC(cifs_min_rcv, "Network buffers in pool. Default: 4 Range: "
+ "1 to 64");
unsigned int cifs_min_small = 30;
module_param(cifs_min_small, int, 0);
-MODULE_PARM_DESC(cifs_min_small,"Small network buffers in pool. Default: 30 Range: 2 to 256");
+MODULE_PARM_DESC(cifs_min_small, "Small network buffers in pool. Default: 30 "
+ "Range: 2 to 256");
unsigned int cifs_max_pending = CIFS_MAX_REQ;
module_param(cifs_max_pending, int, 0);
-MODULE_PARM_DESC(cifs_max_pending,"Simultaneous requests to server. Default: 50 Range: 2 to 256");
+MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server. "
+ "Default: 50 Range: 2 to 256");
extern mempool_t *cifs_sm_req_poolp;
extern mempool_t *cifs_req_poolp;
struct cifs_sb_info *cifs_sb;
int rc = 0;
- sb->s_flags |= MS_NODIRATIME; /* and probably even noatime */
- sb->s_fs_info = kzalloc(sizeof(struct cifs_sb_info),GFP_KERNEL);
+ /* BB should we make this contingent on mount parm? */
+ sb->s_flags |= MS_NODIRATIME | MS_NOATIME;
+ sb->s_fs_info = kzalloc(sizeof(struct cifs_sb_info), GFP_KERNEL);
cifs_sb = CIFS_SB(sb);
- if(cifs_sb == NULL)
+ 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) {
sb->s_magic = CIFS_MAGIC_NUMBER;
sb->s_op = &cifs_super_ops;
-/* if(cifs_sb->tcon->ses->server->maxBuf > MAX_CIFS_HDR_SIZE + 512)
- sb->s_blocksize = cifs_sb->tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE; */
+/* if (cifs_sb->tcon->ses->server->maxBuf > MAX_CIFS_HDR_SIZE + 512)
+ sb->s_blocksize =
+ cifs_sb->tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE; */
#ifdef CONFIG_CIFS_QUOTA
sb->s_qcop = &cifs_quotactl_ops;
#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;
}
goto out_no_root;
}
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
+ cFYI(1, ("export ops supported"));
+ sb->s_export_op = &cifs_export_ops;
+ }
+#endif /* EXPERIMENTAL */
+
return 0;
out_no_root:
if (inode)
iput(inode);
+ cifs_umount(sb, cifs_sb);
+
out_mount_failed:
- if(cifs_sb) {
- if(cifs_sb->local_nls)
- unload_nls(cifs_sb->local_nls);
+ 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;
cFYI(1, ("In cifs_put_super"));
cifs_sb = CIFS_SB(sb);
- if(cifs_sb == NULL) {
- cFYI(1,("Empty cifs superblock info passed to unmount"));
+ if (cifs_sb == NULL) {
+ cFYI(1, ("Empty cifs superblock info passed to unmount"));
return;
}
- rc = cifs_umount(sb, cifs_sb);
- if (rc) {
+ rc = cifs_umount(sb, cifs_sb);
+ 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 */
- 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 */
+ /*
+ * 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, 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;
- } else /* file mode might have been restricted at mount time
- on the client (above and beyond ACL on servers) for
+ 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,
- so allowing client to check permissions is useful */
+ so allowing client to check permissions is useful */
return generic_permission(inode, mask, NULL);
}
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->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */
- cifs_inode->vfs_inode.i_flags = S_NOATIME | S_NOCMTIME;
+
+ /* Can not set i_flags here - they get immediately overwritten
+ to zero by the VFS */
+/* cifs_inode->vfs_inode.i_flags = S_NOATIME | S_NOCMTIME;*/
INIT_LIST_HEAD(&cifs_inode->openFileList);
return &cifs_inode->vfs_inode;
}
if (cifs_sb) {
if (cifs_sb->tcon) {
+/* BB add prepath to mount options displayed */
seq_printf(s, ",unc=%s", cifs_sb->tcon->treeName);
if (cifs_sb->tcon->ses) {
if (cifs_sb->tcon->ses->userName)
seq_printf(s, ",username=%s",
cifs_sb->tcon->ses->userName);
- if(cifs_sb->tcon->ses->domainName)
+ if (cifs_sb->tcon->ses->domainName)
seq_printf(s, ",domain=%s",
cifs_sb->tcon->ses->domainName);
}
+ 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->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 (cifs_sb->tcon->seal)
+ seq_printf(s, ",seal");
+ if (cifs_sb->tcon->nocase)
+ seq_printf(s, ",nocase");
+ if (cifs_sb->tcon->retry)
+ seq_printf(s, ",hard");
}
- seq_printf(s, ",rsize=%d",cifs_sb->rsize);
- seq_printf(s, ",wsize=%d",cifs_sb->wsize);
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
+ seq_printf(s, ",posixpaths");
+ 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);
}
return 0;
}
#ifdef CONFIG_CIFS_QUOTA
-int cifs_xquota_set(struct super_block * sb, int quota_type, qid_t qid,
- struct fs_disk_quota * pdquota)
+int cifs_xquota_set(struct super_block *sb, int quota_type, qid_t qid,
+ struct fs_disk_quota *pdquota)
{
int xid;
int rc = 0;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct cifsTconInfo *pTcon;
-
- if(cifs_sb)
+
+ if (cifs_sb)
pTcon = cifs_sb->tcon;
else
return -EIO;
xid = GetXid();
- if(pTcon) {
- cFYI(1,("set type: 0x%x id: %d",quota_type,qid));
+ if (pTcon) {
+ cFYI(1, ("set type: 0x%x id: %d", quota_type, qid));
} else {
- return -EIO;
+ rc = -EIO;
}
FreeXid(xid);
return rc;
}
-int cifs_xquota_get(struct super_block * sb, int quota_type, qid_t qid,
- struct fs_disk_quota * pdquota)
+int cifs_xquota_get(struct super_block *sb, int quota_type, qid_t qid,
+ struct fs_disk_quota *pdquota)
{
int xid;
int rc = 0;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct cifsTconInfo *pTcon;
- if(cifs_sb)
+ if (cifs_sb)
pTcon = cifs_sb->tcon;
else
return -EIO;
xid = GetXid();
- if(pTcon) {
- cFYI(1,("set type: 0x%x id: %d",quota_type,qid));
+ if (pTcon) {
+ cFYI(1, ("set type: 0x%x id: %d", quota_type, qid));
} else {
rc = -EIO;
}
return rc;
}
-int cifs_xstate_set(struct super_block * sb, unsigned int flags, int operation)
+int cifs_xstate_set(struct super_block *sb, unsigned int flags, int operation)
{
- int xid;
+ int xid;
int rc = 0;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct cifsTconInfo *pTcon;
- if(cifs_sb)
+ if (cifs_sb)
pTcon = cifs_sb->tcon;
else
return -EIO;
xid = GetXid();
- if(pTcon) {
- cFYI(1,("flags: 0x%x operation: 0x%x",flags,operation));
+ if (pTcon) {
+ cFYI(1, ("flags: 0x%x operation: 0x%x", flags, operation));
} else {
rc = -EIO;
}
return rc;
}
-int cifs_xstate_get(struct super_block * sb, struct fs_quota_stat *qstats)
+int cifs_xstate_get(struct super_block *sb, struct fs_quota_stat *qstats)
{
int xid;
int rc = 0;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct cifsTconInfo *pTcon;
- if(cifs_sb) {
+ if (cifs_sb) {
pTcon = cifs_sb->tcon;
} else {
return -EIO;
}
xid = GetXid();
- if(pTcon) {
- cFYI(1,("pqstats %p",qstats));
+ if (pTcon) {
+ cFYI(1, ("pqstats %p", qstats));
} else {
rc = -EIO;
}
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 cifsTconInfo * tcon;
+ 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)
+ if (cifs_sb == NULL)
return;
tcon = cifs_sb->tcon;
- if(tcon == NULL)
+ if (tcon == NULL)
return;
down(&tcon->tconSem);
if (atomic_read(&tcon->useCount) == 1)
/* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */
/* cancel_notify_requests(tcon); */
- if(tcon->ses && tcon->ses->server)
- {
- cFYI(1,("wake up tasks now - umount begin not complete"));
+ if (tcon->ses && tcon->ses->server) {
+ cFYI(1, ("wake up tasks now - umount begin not complete"));
wake_up_all(&tcon->ses->server->request_q);
wake_up_all(&tcon->ses->server->response_q);
msleep(1); /* yield */
return 0;
}
-static struct super_operations cifs_super_ops = {
- .read_inode = cifs_read_inode,
+static const struct super_operations cifs_super_ops = {
.put_super = cifs_put_super,
.statfs = cifs_statfs,
.alloc_inode = cifs_alloc_inode,
.destroy_inode = cifs_destroy_inode,
-/* .drop_inode = generic_delete_inode,
- .delete_inode = cifs_delete_inode, *//* Do not need the above two functions
- unless later we add lazy close of inodes or unless the kernel forgets to call
- us with the same number of releases (closes) as opens */
+/* .drop_inode = generic_delete_inode,
+ .delete_inode = cifs_delete_inode, */ /* Do not need above two
+ functions unless later we add lazy close of inodes or unless the
+ kernel forgets to call us with the same number of releases (closes)
+ as opens */
.show_options = cifs_show_options,
.umount_begin = cifs_umount_begin,
.remount_fs = cifs_remount,
static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
- struct inode *inode = iocb->ki_filp->f_dentry->d_inode;
+ struct inode *inode = iocb->ki_filp->f_path.dentry->d_inode;
ssize_t written;
written = generic_file_aio_write(iocb, iov, nr_segs, pos);
{
/* origin == SEEK_END => we must revalidate the cached file length */
if (origin == SEEK_END) {
- int retval = cifs_revalidate(file->f_dentry);
+ int retval;
+
+ /* some applications poll for the file length in this strange
+ way so we must seek to end on non-oplocked files by
+ setting the revalidate time to zero */
+ CIFS_I(file->f_path.dentry->d_inode)->time = 0;
+
+ retval = cifs_revalidate(file->f_path.dentry);
if (retval < 0)
return (loff_t)retval;
}
- return remote_llseek(file, offset, origin);
+ return generic_file_llseek_unlocked(file, offset, origin);
}
-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,
.kill_sb = kill_anon_super,
/* .fs_flags */
};
-struct inode_operations cifs_dir_inode_ops = {
+const struct inode_operations cifs_dir_inode_ops = {
.create = cifs_create,
.lookup = cifs_lookup,
.getattr = cifs_getattr,
#endif
};
-struct inode_operations cifs_file_inode_ops = {
+const struct inode_operations cifs_file_inode_ops = {
/* revalidate:cifs_revalidate, */
.setattr = cifs_setattr,
.getattr = cifs_getattr, /* do we need this anymore? */
.getxattr = cifs_getxattr,
.listxattr = cifs_listxattr,
.removexattr = cifs_removexattr,
-#endif
+#endif
};
-struct inode_operations cifs_symlink_inode_ops = {
- .readlink = generic_readlink,
+const struct inode_operations cifs_symlink_inode_ops = {
+ .readlink = generic_readlink,
.follow_link = cifs_follow_link,
.put_link = cifs_put_link,
.permission = cifs_permission,
.getxattr = cifs_getxattr,
.listxattr = cifs_listxattr,
.removexattr = cifs_removexattr,
-#endif
+#endif
};
const struct file_operations cifs_file_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
};
const struct file_operations cifs_file_direct_ops = {
- /* no mmap, no aio, no readv -
+ /* no mmap, no aio, no readv -
BB reevaluate whether they can be done with directio, no cache */
.read = cifs_user_read,
.write = cifs_user_write,
.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
.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
};
const struct file_operations cifs_file_direct_nobrl_ops = {
- /* no mmap, no aio, no readv -
+ /* no mmap, no aio, no readv -
BB reevaluate whether they can be done with directio, no cache */
.read = cifs_user_read,
.write = cifs_user_write,
.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
#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;
- if ((flags & (SLAB_CTOR_VERIFY | SLAB_CTOR_CONSTRUCTOR)) ==
- SLAB_CTOR_CONSTRUCTOR) {
- inode_init_once(&cifsi->vfs_inode);
- INIT_LIST_HEAD(&cifsi->lockList);
- }
+ inode_init_once(&cifsi->vfs_inode);
+ INIT_LIST_HEAD(&cifsi->lockList);
}
static int
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;
static int
cifs_init_request_bufs(void)
{
- if(CIFSMaxBufSize < 8192) {
+ if (CIFSMaxBufSize < 8192) {
/* Buffer size can not be smaller than 2 * PATH_MAX since maximum
Unicode path name has to fit in any SMB/CIFS path based frames */
CIFSMaxBufSize = 8192;
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;
- if(cifs_min_rcv < 1)
+ if (cifs_min_rcv < 1)
cifs_min_rcv = 1;
else if (cifs_min_rcv > 64) {
cifs_min_rcv = 64;
- cERROR(1,("cifs_min_rcv set to maximum (64)"));
+ cERROR(1, ("cifs_min_rcv set to maximum (64)"));
}
cifs_req_poolp = mempool_create_slab_pool(cifs_min_rcv,
cifs_req_cachep);
- if(cifs_req_poolp == NULL) {
+ if (cifs_req_poolp == NULL) {
kmem_cache_destroy(cifs_req_cachep);
return -ENOMEM;
}
/* MAX_CIFS_SMALL_BUFFER_SIZE bytes is enough for most SMB responses and
almost all handle based requests (but not write response, nor is it
sufficient for path based requests). A smaller size would have
- been more efficient (compacting multiple slab items on one 4k page)
+ been more efficient (compacting multiple slab items on one 4k page)
for the case in which debug was on, but this larger size allows
more SMBs to use small buffer alloc and is still much more
- efficient to alloc 1 per page off the slab compared to 17K (5page)
+ efficient to alloc 1 per page off the slab compared to 17K (5page)
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);
+ MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN,
+ NULL);
if (cifs_sm_req_cachep == NULL) {
mempool_destroy(cifs_req_poolp);
kmem_cache_destroy(cifs_req_cachep);
- return -ENOMEM;
+ return -ENOMEM;
}
- if(cifs_min_small < 2)
+ if (cifs_min_small < 2)
cifs_min_small = 2;
else if (cifs_min_small > 256) {
cifs_min_small = 256;
- cFYI(1,("cifs_min_small set to maximum (256)"));
+ cFYI(1, ("cifs_min_small set to maximum (256)"));
}
cifs_sm_req_poolp = mempool_create_slab_pool(cifs_min_small,
cifs_sm_req_cachep);
- if(cifs_sm_req_poolp == NULL) {
+ if (cifs_sm_req_poolp == NULL) {
mempool_destroy(cifs_req_poolp);
kmem_cache_destroy(cifs_req_cachep);
kmem_cache_destroy(cifs_sm_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;
/* 3 is a reasonable minimum number of simultaneous operations */
cifs_mid_poolp = mempool_create_slab_pool(3, cifs_mid_cachep);
- if(cifs_mid_poolp == NULL) {
+ if (cifs_mid_poolp == NULL) {
kmem_cache_destroy(cifs_mid_cachep);
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) {
- kmem_cache_destroy(cifs_mid_cachep);
mempool_destroy(cifs_mid_poolp);
+ kmem_cache_destroy(cifs_mid_cachep);
return -ENOMEM;
}
kmem_cache_destroy(cifs_oplock_cachep);
}
-static int cifs_oplock_thread(void * dummyarg)
+static int cifs_oplock_thread(void *dummyarg)
{
- struct oplock_q_entry * oplock_item;
+ struct oplock_q_entry *oplock_item;
struct cifsTconInfo *pTcon;
- struct inode * inode;
+ struct inode *inode;
__u16 netfid;
- int rc;
+ int rc, waitrc = 0;
+ set_freezable();
do {
- if (try_to_freeze())
+ if (try_to_freeze())
continue;
-
+
spin_lock(&GlobalMid_Lock);
- if(list_empty(&GlobalOplock_Q)) {
+ if (list_empty(&GlobalOplock_Q)) {
spin_unlock(&GlobalMid_Lock);
set_current_state(TASK_INTERRUPTIBLE);
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
- deadlock when oplock received on delete
+ oplock_item = list_entry(GlobalOplock_Q.next,
+ 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));
-
- /* releasing a stale oplock after recent reconnection
- of smb session using a now incorrect file
- handle is not a data integrity issue but do
- 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));
+ /* mutex_lock(&inode->i_mutex);*/
+ if (S_ISREG(inode->i_mode)) {
+ 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
- spin_unlock(&GlobalMid_Lock);
+ 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
+ handle is not a data integrity issue but do
+ 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,
+ 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)
+static int cifs_dnotify_thread(void *dummyarg)
{
struct list_head *tmp;
struct cifsSesInfo *ses;
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,
+ ses = list_entry(tmp, struct cifsSesInfo,
cifsSessionList);
- if(ses && ses->server &&
- atomic_read(&ses->server->inFlight))
+ if (ses->server && atomic_read(&ses->server->inFlight))
wake_up_all(&ses->server->response_q);
}
read_unlock(&GlobalSMBSeslock);
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);
#ifdef CONFIG_CIFS_EXPERIMENTAL
INIT_LIST_HEAD(&GlobalDnotifyReqList);
INIT_LIST_HEAD(&GlobalDnotifyRsp_Q);
-#endif
+#endif
/*
* Initialize Global counters
*/
atomic_set(&sesInfoAllocCount, 0);
atomic_set(&tconInfoAllocCount, 0);
- atomic_set(&tcpSesAllocCount,0);
+ atomic_set(&tcpSesAllocCount, 0);
atomic_set(&tcpSesReconnectCount, 0);
atomic_set(&tconInfoReconnectCount, 0);
rwlock_init(&GlobalSMBSeslock);
spin_lock_init(&GlobalMid_Lock);
- if(cifs_max_pending < 2) {
+ if (cifs_max_pending < 2) {
cifs_max_pending = 2;
- cFYI(1,("cifs_max_pending set to min of 2"));
- } else if(cifs_max_pending > 256) {
+ cFYI(1, ("cifs_max_pending set to min of 2"));
+ } else if (cifs_max_pending > 256) {
cifs_max_pending = 256;
- cFYI(1,("cifs_max_pending set to max of 256"));
+ cFYI(1, ("cifs_max_pending set to max of 256"));
}
rc = cifs_init_inodecache();
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;
+ cERROR(1, ("error %d create oplock thread", rc));
+ goto out_unregister_dfs_key_type;
}
dnotifyThread = kthread_run(cifs_dnotify_thread, NULL, "cifsdnotifyd");
if (IS_ERR(dnotifyThread)) {
rc = PTR_ERR(dnotifyThread);
- cERROR(1,("error %d create dnotify thread", rc));
+ cERROR(1, ("error %d create dnotify thread", rc));
goto out_stop_oplock_thread;
}
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, ("In unregister ie 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();
}
MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>");
-MODULE_LICENSE("GPL"); /* combination of LGPL + GPL source behaves as GPL */
+MODULE_LICENSE("GPL"); /* combination of LGPL + GPL source behaves as GPL */
MODULE_DESCRIPTION
- ("VFS to access servers complying with the SNIA CIFS Specification e.g. Samba and Windows");
+ ("VFS to access servers complying with the SNIA CIFS Specification "
+ "e.g. Samba and Windows");
MODULE_VERSION(CIFS_VERSION);
module_init(init_cifs)
module_exit(exit_cifs)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff