return FILE_OVERWRITE_IF;
else if ((flags & O_CREAT) == O_CREAT)
return FILE_OPEN_IF;
+ else if ((flags & O_TRUNC) == O_TRUNC)
+ return FILE_OVERWRITE;
else
return FILE_OPEN;
}
}
}
- mutex_lock(&inode->i_sb->s_vfs_rename_mutex);
full_path = build_path_from_dentry(file->f_dentry);
- mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);
if (full_path == NULL) {
FreeXid(xid);
return -ENOMEM;
if (ptmp) {
cFYI(1, ("closedir free smb buf in srch struct"));
pCFileStruct->srch_inf.ntwrk_buf_start = NULL;
- cifs_buf_release(ptmp);
+ if(pCFileStruct->srch_inf.smallBuf)
+ cifs_small_buf_release(ptmp);
+ else
+ cifs_buf_release(ptmp);
}
ptmp = pCFileStruct->search_resume_name;
if (ptmp) {
int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
{
int rc, xid;
- __u32 lockType = LOCKING_ANDX_LARGE_FILES;
__u32 numLock = 0;
__u32 numUnlock = 0;
__u64 length;
int wait_flag = FALSE;
struct cifs_sb_info *cifs_sb;
struct cifsTconInfo *pTcon;
+ __u16 netfid;
+ __u8 lockType = LOCKING_ANDX_LARGE_FILES;
length = 1 + pfLock->fl_end - pfLock->fl_start;
rc = -EACCES;
pfLock->fl_end));
if (pfLock->fl_flags & FL_POSIX)
- cFYI(1, ("Posix "));
+ cFYI(1, ("Posix"));
if (pfLock->fl_flags & FL_FLOCK)
- cFYI(1, ("Flock "));
+ cFYI(1, ("Flock"));
if (pfLock->fl_flags & FL_SLEEP) {
- cFYI(1, ("Blocking lock "));
+ cFYI(1, ("Blocking lock"));
wait_flag = TRUE;
}
if (pfLock->fl_flags & FL_ACCESS)
cFYI(1, ("F_WRLCK "));
numLock = 1;
} else if (pfLock->fl_type == F_UNLCK) {
- cFYI(1, ("F_UNLCK "));
+ cFYI(1, ("F_UNLCK"));
numUnlock = 1;
+ /* Check if unlock includes more than
+ one lock range */
} else if (pfLock->fl_type == F_RDLCK) {
- cFYI(1, ("F_RDLCK "));
+ cFYI(1, ("F_RDLCK"));
lockType |= LOCKING_ANDX_SHARED_LOCK;
numLock = 1;
} else if (pfLock->fl_type == F_EXLCK) {
- cFYI(1, ("F_EXLCK "));
+ cFYI(1, ("F_EXLCK"));
numLock = 1;
} else if (pfLock->fl_type == F_SHLCK) {
- cFYI(1, ("F_SHLCK "));
+ cFYI(1, ("F_SHLCK"));
lockType |= LOCKING_ANDX_SHARED_LOCK;
numLock = 1;
} else
- cFYI(1, ("Unknown type of lock "));
+ cFYI(1, ("Unknown type of lock"));
cifs_sb = CIFS_SB(file->f_dentry->d_sb);
pTcon = cifs_sb->tcon;
FreeXid(xid);
return -EBADF;
}
+ netfid = ((struct cifsFileInfo *)file->private_data)->netfid;
+
+ /* BB add code here to normalize offset and length to
+ account for negative length which we can not accept over the
+ wire */
if (IS_GETLK(cmd)) {
- rc = CIFSSMBLock(xid, pTcon,
- ((struct cifsFileInfo *)file->
- private_data)->netfid,
- length,
- pfLock->fl_start, 0, 1, lockType,
- 0 /* wait flag */ );
+ if(experimEnabled &&
+ (cifs_sb->tcon->ses->capabilities & CAP_UNIX) &&
+ (CIFS_UNIX_FCNTL_CAP &
+ le64_to_cpu(cifs_sb->tcon->fsUnixInfo.Capability))) {
+ int posix_lock_type;
+ if(lockType & LOCKING_ANDX_SHARED_LOCK)
+ posix_lock_type = CIFS_RDLCK;
+ else
+ posix_lock_type = CIFS_WRLCK;
+ rc = CIFSSMBPosixLock(xid, pTcon, netfid, 1 /* get */,
+ length, pfLock,
+ posix_lock_type, wait_flag);
+ FreeXid(xid);
+ return rc;
+ }
+
+ /* BB we could chain these into one lock request BB */
+ rc = CIFSSMBLock(xid, pTcon, netfid, length, pfLock->fl_start,
+ 0, 1, lockType, 0 /* wait flag */ );
if (rc == 0) {
- rc = CIFSSMBLock(xid, pTcon,
- ((struct cifsFileInfo *) file->
- private_data)->netfid,
- length,
+ rc = CIFSSMBLock(xid, pTcon, netfid, length,
pfLock->fl_start, 1 /* numUnlock */ ,
0 /* numLock */ , lockType,
0 /* wait flag */ );
pfLock->fl_type = F_UNLCK;
if (rc != 0)
cERROR(1, ("Error unlocking previously locked "
- "range %d during test of lock ",
- rc));
+ "range %d during test of lock", rc));
rc = 0;
} else {
FreeXid(xid);
return rc;
}
-
- rc = CIFSSMBLock(xid, pTcon,
- ((struct cifsFileInfo *) file->private_data)->
- netfid, length,
- pfLock->fl_start, numUnlock, numLock, lockType,
- wait_flag);
+ if (experimEnabled &&
+ (cifs_sb->tcon->ses->capabilities & CAP_UNIX) &&
+ (CIFS_UNIX_FCNTL_CAP &
+ le64_to_cpu(cifs_sb->tcon->fsUnixInfo.Capability))) {
+ int posix_lock_type;
+ if(lockType & LOCKING_ANDX_SHARED_LOCK)
+ posix_lock_type = CIFS_RDLCK;
+ else
+ posix_lock_type = CIFS_WRLCK;
+
+ if(numUnlock == 1)
+ posix_lock_type = CIFS_UNLCK;
+ else if(numLock == 0) {
+ /* if no lock or unlock then nothing
+ to do since we do not know what it is */
+ FreeXid(xid);
+ return -EOPNOTSUPP;
+ }
+ rc = CIFSSMBPosixLock(xid, pTcon, netfid, 0 /* set */,
+ length, pfLock,
+ posix_lock_type, wait_flag);
+ } else
+ rc = CIFSSMBLock(xid, pTcon, netfid, length, pfLock->fl_start,
+ numUnlock, numLock, lockType, wait_flag);
if (pfLock->fl_flags & FL_POSIX)
posix_lock_file_wait(file, pfLock);
FreeXid(xid);
if (rc != 0)
break;
}
- /* BB FIXME We can not sign across two buffers yet */
- if((pTcon->ses->server->secMode &
- (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) == 0) {
+ if(experimEnabled || (pTcon->ses->server &&
+ ((pTcon->ses->server->secMode &
+ (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
+ == 0))) {
struct kvec iov[2];
unsigned int len;
*poffset, &bytes_written,
iov, 1, long_op);
} else
- /* BB FIXME fixup indentation of line below */
- rc = CIFSSMBWrite(xid, pTcon,
- open_file->netfid,
- min_t(const int, cifs_sb->wsize,
- write_size - total_written),
- *poffset, &bytes_written,
- write_data + total_written, NULL, long_op);
+ rc = CIFSSMBWrite(xid, pTcon,
+ open_file->netfid,
+ min_t(const int, cifs_sb->wsize,
+ write_size - total_written),
+ *poffset, &bytes_written,
+ write_data + total_written,
+ NULL, long_op);
}
if (rc || (bytes_written == 0)) {
if (total_written)
struct cifsFileInfo *open_file;
int rc;
+ /* Having a null inode here (because mapping->host was set to zero by
+ the VFS or MM) should not happen but we had reports of on oops (due to
+ it being zero) during stress testcases so we need to check for it */
+
+ if(cifs_inode == NULL) {
+ cERROR(1,("Null inode passed to cifs_writeable_file"));
+ dump_stack();
+ return NULL;
+ }
+
read_lock(&GlobalSMBSeslock);
list_for_each_entry(open_file, &cifs_inode->openFileList, flist) {
if (open_file->closePend)
if (cifs_sb->wsize < PAGE_CACHE_SIZE)
return generic_writepages(mapping, wbc);
- /* BB FIXME we do not have code to sign across multiple buffers yet,
- so go to older writepage style write which we can sign if needed */
if((cifs_sb->tcon->ses) && (cifs_sb->tcon->ses->server))
if(cifs_sb->tcon->ses->server->secMode &
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
- return generic_writepages(mapping, wbc);
+ if(!experimEnabled)
+ return generic_writepages(mapping, wbc);
/*
* BB: Is this meaningful for a non-block-device file system?
projects / linux.git / blobdiff