From fb1214e48f735cdb68446adb77ec37aa3de60697 Mon Sep 17 00:00:00 2001 From: Pavel Shilovsky Date: Tue, 18 Sep 2012 16:20:26 -0700 Subject: [PATCH] CIFS: Move open code to ops struct Acked-by: Jeff Layton Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French --- fs/cifs/cifsglob.h | 7 ++++++ fs/cifs/cifsproto.h | 7 +++--- fs/cifs/dir.c | 17 ++++++++------- fs/cifs/file.c | 63 +++++++++++++++++++++++++---------------------------- fs/cifs/smb1ops.c | 29 ++++++++++++++++++++++++ 5 files changed, 79 insertions(+), 44 deletions(-) diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index a2a3865..e649fac 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -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 { diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 79c0884..b67f775 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -121,9 +121,10 @@ 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, - __u32 oplock); +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, unsigned int f_flags, __u32 *oplock, __u16 *netfid, diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c index 781025b..70823dc 100644 --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -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; } diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 712f2a4..1246cf7 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -169,16 +169,19 @@ posix_open_ret: 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 @@ out: } 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: diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c index b170da0..907b308 100644 --- a/fs/cifs/smb1ops.c +++ b/fs/cifs/smb1ops.c @@ -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 = { -- 2.7.4