Commit fb1214e4 authored by Pavel Shilovsky's avatar Pavel Shilovsky Committed by Steve French
Browse files

CIFS: Move open code to ops struct 



Acked-by: default avatarJeff Layton <jlayton@redhat.com>
Signed-off-by: default avatarPavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: default avatarSteve French <smfrench@gmail.com>
parent 4b4de76e

fs/cifs/cifsglob.h

+7 −0
Original line number Diff line number Diff line
@@ -171,6 +171,7 @@ struct cifs_tcon; 
struct dfs_info3_param;

struct cifs_fattr;

struct smb_vol;

struct cifs_fid;



struct smb_version_operations {

	int (*send_cancel)(struct TCP_Server_Info *, void *,
@@ -262,6 +263,12 @@ struct smb_version_operations { 
	/* open, rename and delete file */

	int (*rename_pending_delete)(const char *, struct dentry *,

				     const unsigned int);

	/* open a file for non-posix mounts */

	int (*open)(const unsigned int, struct cifs_tcon *, const char *, int,

		    int, int, struct cifs_fid *, __u32 *, FILE_ALL_INFO *,

		    struct cifs_sb_info *);

	/* set fid protocol-specific info */

	void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32);

};



struct smb_version_values {

fs/cifs/cifsproto.h

+4 −3
Original line number Diff line number Diff line
@@ -121,8 +121,9 @@ extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time, 
				      int offset);

extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);



extern struct cifsFileInfo *cifs_new_fileinfo(__u16 fileHandle,

				struct file *file, struct tcon_link *tlink,

extern struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid,

					      struct file *file,

					      struct tcon_link *tlink,

					      __u32 oplock);

extern int cifs_posix_open(char *full_path, struct inode **inode,

			   struct super_block *sb, int mode,

fs/cifs/dir.c

+9 −8
Original line number Diff line number Diff line
@@ -377,11 +377,12 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry, 
	unsigned int xid;

	struct tcon_link *tlink;

	struct cifs_tcon *tcon;

	__u16 fileHandle;

	struct cifs_fid fid;

	__u32 oplock;

	struct cifsFileInfo *pfile_info;

	struct cifsFileInfo *file_info;



	/* Posix open is only called (at lookup time) for file create now.  For

	/*

	 * Posix open is only called (at lookup time) for file create now. For

	 * opens (rather than creates), because we do not know if it is a file

	 * or directory yet, and current Samba no longer allows us to do posix

	 * open on dirs, we could end up wasting an open call on what turns out
@@ -415,20 +416,20 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry, 
	tcon = tlink_tcon(tlink);



	rc = cifs_do_create(inode, direntry, xid, tlink, oflags, mode,

			    &oplock, &fileHandle, opened);

			    &oplock, &fid.netfid, opened);



	if (rc)

		goto out;



	rc = finish_open(file, direntry, generic_file_open, opened);

	if (rc) {

		CIFSSMBClose(xid, tcon, fileHandle);

		CIFSSMBClose(xid, tcon, fid.netfid);

		goto out;

	}



	pfile_info = cifs_new_fileinfo(fileHandle, file, tlink, oplock);

	if (pfile_info == NULL) {

		CIFSSMBClose(xid, tcon, fileHandle);

	file_info = cifs_new_fileinfo(&fid, file, tlink, oplock);

	if (file_info == NULL) {

		CIFSSMBClose(xid, tcon, fid.netfid);

		rc = -ENOMEM;

	}

fs/cifs/file.c

+30 −33
Original line number Diff line number Diff line
@@ -169,16 +169,19 @@ int cifs_posix_open(char *full_path, struct inode **pinode, 


static int

cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,

	     struct cifs_tcon *tcon, unsigned int f_flags, __u32 *poplock,

	     __u16 *pnetfid, unsigned int xid)

	     struct cifs_tcon *tcon, unsigned int f_flags, __u32 *oplock,

	     struct cifs_fid *fid, unsigned int xid)

{

	int rc;

	int desiredAccess;

	int desired_access;

	int disposition;

	int create_options = CREATE_NOT_DIR;

	FILE_ALL_INFO *buf;



	desiredAccess = cifs_convert_flags(f_flags);

	if (!tcon->ses->server->ops->open)

		return -ENOSYS;



	desired_access = cifs_convert_flags(f_flags);



/*********************************************************************

 *  open flag mapping table:
@@ -215,16 +218,9 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb, 
	if (backup_cred(cifs_sb))

		create_options |= CREATE_OPEN_BACKUP_INTENT;



	if (tcon->ses->capabilities & CAP_NT_SMBS)

		rc = CIFSSMBOpen(xid, tcon, full_path, disposition,

			 desiredAccess, create_options, pnetfid, poplock, buf,

			 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags

				 & CIFS_MOUNT_MAP_SPECIAL_CHR);

	else

		rc = SMBLegacyOpen(xid, tcon, full_path, disposition,

			desiredAccess, CREATE_NOT_DIR, pnetfid, poplock, buf,

			cifs_sb->local_nls, cifs_sb->mnt_cifs_flags

				& CIFS_MOUNT_MAP_SPECIAL_CHR);

	rc = tcon->ses->server->ops->open(xid, tcon, full_path, disposition,

					  desired_access, create_options, fid,

					  oplock, buf, cifs_sb);



	if (rc)

		goto out;
@@ -234,7 +230,7 @@ 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, pnetfid);

					 xid, &fid->netfid);



out:

	kfree(buf);
@@ -242,7 +238,7 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb, 
}



struct cifsFileInfo *

cifs_new_fileinfo(__u16 fileHandle, struct file *file,

cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,

		  struct tcon_link *tlink, __u32 oplock)

{

	struct dentry *dentry = file->f_path.dentry;
@@ -255,7 +251,6 @@ cifs_new_fileinfo(__u16 fileHandle, struct file *file, 
		return cfile;



	cfile->count = 1;

	cfile->fid.netfid = fileHandle;

	cfile->pid = current->tgid;

	cfile->uid = current_fsuid();

	cfile->dentry = dget(dentry);
@@ -265,6 +260,7 @@ cifs_new_fileinfo(__u16 fileHandle, struct file *file, 
	mutex_init(&cfile->fh_mutex);

	INIT_WORK(&cfile->oplock_break, cifs_oplock_break);

	INIT_LIST_HEAD(&cfile->llist);

	tlink_tcon(tlink)->ses->server->ops->set_fid(cfile, fid, oplock);



	spin_lock(&cifs_file_list_lock);

	list_add(&cfile->tlist, &(tlink_tcon(tlink)->openFileList));
@@ -275,9 +271,6 @@ cifs_new_fileinfo(__u16 fileHandle, struct file *file, 
		list_add_tail(&cfile->flist, &cinode->openFileList);

	spin_unlock(&cifs_file_list_lock);



	cifs_set_oplock_level(cinode, oplock);

	cinode->can_cache_brlcks = cinode->clientCanCacheAll;



	file->private_data = cfile;

	return cfile;

}
@@ -364,10 +357,10 @@ int cifs_open(struct inode *inode, struct file *file) 
	struct cifs_sb_info *cifs_sb;

	struct cifs_tcon *tcon;

	struct tcon_link *tlink;

	struct cifsFileInfo *pCifsFile = NULL;

	struct cifsFileInfo *cfile = NULL;

	char *full_path = NULL;

	bool posix_open_ok = false;

	__u16 netfid;

	struct cifs_fid fid;



	xid = get_xid();
@@ -399,7 +392,7 @@ int cifs_open(struct inode *inode, struct file *file) 
		/* can not refresh inode info since size could be stale */

		rc = cifs_posix_open(full_path, &inode, inode->i_sb,

				cifs_sb->mnt_file_mode /* ignored */,

				file->f_flags, &oplock, &netfid, xid);

				file->f_flags, &oplock, &fid.netfid, xid);

		if (rc == 0) {

			cFYI(1, "posix open succeeded");

			posix_open_ok = true;
@@ -415,20 +408,22 @@ int cifs_open(struct inode *inode, struct file *file) 
		} else if ((rc != -EIO) && (rc != -EREMOTE) &&

			 (rc != -EOPNOTSUPP)) /* path not found or net err */

			goto out;

		/* else fallthrough to retry open the old way on network i/o

		   or DFS errors */

		/*

		 * Else fallthrough to retry open the old way on network i/o

		 * or DFS errors.

		 */

	}



	if (!posix_open_ok) {

		rc = cifs_nt_open(full_path, inode, cifs_sb, tcon,

				  file->f_flags, &oplock, &netfid, xid);

				  file->f_flags, &oplock, &fid, xid);

		if (rc)

			goto out;

	}



	pCifsFile = cifs_new_fileinfo(netfid, file, tlink, oplock);

	if (pCifsFile == NULL) {

		CIFSSMBClose(xid, tcon, netfid);

	cfile = cifs_new_fileinfo(&fid, file, tlink, oplock);

	if (cfile == NULL) {

		CIFSSMBClose(xid, tcon, fid.netfid);

		rc = -ENOMEM;

		goto out;

	}
@@ -436,8 +431,10 @@ int cifs_open(struct inode *inode, struct file *file) 
	cifs_fscache_set_inode_cookie(inode, file);



	if ((oplock & CIFS_CREATE_ACTION) && !posix_open_ok && tcon->unix_ext) {

		/* time to set mode which we can not set earlier due to

		   problems creating new read-only files */

		/*

		 * Time to set mode which we can not set earlier due to

		 * problems creating new read-only files.

		 */

		struct cifs_unix_set_info_args args = {

			.mode	= inode->i_mode,

			.uid	= NO_CHANGE_64,
@@ -447,8 +444,8 @@ int cifs_open(struct inode *inode, struct file *file) 
			.mtime	= NO_CHANGE_64,

			.device	= 0,

		};

		CIFSSMBUnixSetFileInfo(xid, tcon, &args, netfid,

					pCifsFile->pid);

		CIFSSMBUnixSetFileInfo(xid, tcon, &args, fid.netfid,

				       cfile->pid);

	}



out:

fs/cifs/smb1ops.c

+29 −0
Original line number Diff line number Diff line
@@ -607,6 +607,33 @@ cifs_mkdir_setinfo(struct inode *inode, const char *full_path, 
		cifsInode->cifsAttrs = dosattrs;

}



static int

cifs_open_file(const unsigned int xid, struct cifs_tcon *tcon, const char *path,

	       int disposition, int desired_access, int create_options,

	       struct cifs_fid *fid, __u32 *oplock, FILE_ALL_INFO *buf,

	       struct cifs_sb_info *cifs_sb)

{

	if (!(tcon->ses->capabilities & CAP_NT_SMBS))

		return SMBLegacyOpen(xid, tcon, path, disposition,

				     desired_access, CREATE_NOT_DIR,

				     &fid->netfid, oplock, buf,

				     cifs_sb->local_nls, cifs_sb->mnt_cifs_flags

						& CIFS_MOUNT_MAP_SPECIAL_CHR);

	return CIFSSMBOpen(xid, tcon, path, disposition, desired_access,

			   create_options, &fid->netfid, oplock, buf,

			   cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &

						CIFS_MOUNT_MAP_SPECIAL_CHR);

}



static void

cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)

{

	struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);

	cfile->fid.netfid = fid->netfid;

	cifs_set_oplock_level(cinode, oplock);

	cinode->can_cache_brlcks = cinode->clientCanCacheAll;

}



struct smb_version_operations smb1_operations = {

	.send_cancel = send_nt_cancel,

	.compare_fids = cifs_compare_fids,
@@ -646,6 +673,8 @@ struct smb_version_operations smb1_operations = { 
	.rmdir = CIFSSMBRmDir,

	.unlink = CIFSSMBDelFile,

	.rename_pending_delete = cifs_rename_pending_delete,

	.open = cifs_open_file,

	.set_fid = cifs_set_fid,

};



struct smb_version_values smb1_values = {