mirror of https://gitee.com/openkylin/linux.git
[PATCH] cifs: remove a few redundant null pointer checks, and cleanup misc source formatting
Mostly suggested by Jesper Juhl Signed-off-by: Steve French (sfrench@us.ibm.com) Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Steve French
Linus Torvalds
parent
6a0b48245a
commit
d14537f103
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@ -284,51 +284,48 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
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/* mknod case - do not leave file open */
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CIFSSMBClose(xid, pTcon, fileHandle);
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} else if(newinode) {
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pCifsFile = (struct cifsFileInfo *)
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pCifsFile =
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kmalloc(sizeof (struct cifsFileInfo), GFP_KERNEL);
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if (pCifsFile) {
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memset((char *)pCifsFile, 0,
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sizeof (struct cifsFileInfo));
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pCifsFile->netfid = fileHandle;
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pCifsFile->pid = current->tgid;
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pCifsFile->pInode = newinode;
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pCifsFile->invalidHandle = FALSE;
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pCifsFile->closePend = FALSE;
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init_MUTEX(&pCifsFile->fh_sem);
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/* put the following in at open now */
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/* pCifsFile->pfile = file; */
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write_lock(&GlobalSMBSeslock);
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list_add(&pCifsFile->tlist,&pTcon->openFileList);
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pCifsInode = CIFS_I(newinode);
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if(pCifsInode) {
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if(pCifsFile == NULL)
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goto cifs_create_out;
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memset((char *)pCifsFile, 0,
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sizeof (struct cifsFileInfo));
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pCifsFile->netfid = fileHandle;
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pCifsFile->pid = current->tgid;
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pCifsFile->pInode = newinode;
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pCifsFile->invalidHandle = FALSE;
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pCifsFile->closePend = FALSE;
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init_MUTEX(&pCifsFile->fh_sem);
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/* set the following in open now
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pCifsFile->pfile = file; */
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write_lock(&GlobalSMBSeslock);
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list_add(&pCifsFile->tlist,&pTcon->openFileList);
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pCifsInode = CIFS_I(newinode);
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if(pCifsInode) {
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/* if readable file instance put first in list*/
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if (write_only == TRUE) {
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list_add_tail(&pCifsFile->flist,
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&pCifsInode->openFileList);
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} else {
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list_add(&pCifsFile->flist,
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&pCifsInode->openFileList);
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}
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if((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
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pCifsInode->clientCanCacheAll = TRUE;
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pCifsInode->clientCanCacheRead = TRUE;
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cFYI(1,("Exclusive Oplock granted on inode %p",
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newinode));
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} else if((oplock & 0xF) == OPLOCK_READ)
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pCifsInode->clientCanCacheRead = TRUE;
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if (write_only == TRUE) {
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list_add_tail(&pCifsFile->flist,
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&pCifsInode->openFileList);
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} else {
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list_add(&pCifsFile->flist,
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&pCifsInode->openFileList);
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}
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write_unlock(&GlobalSMBSeslock);
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if((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
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pCifsInode->clientCanCacheAll = TRUE;
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pCifsInode->clientCanCacheRead = TRUE;
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cFYI(1,("Exclusive Oplock for inode %p",
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newinode));
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} else if((oplock & 0xF) == OPLOCK_READ)
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pCifsInode->clientCanCacheRead = TRUE;
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}
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write_unlock(&GlobalSMBSeslock);
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}
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}
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if (buf)
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kfree(buf);
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if (full_path)
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kfree(full_path);
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cifs_create_out:
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kfree(buf);
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kfree(full_path);
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FreeXid(xid);
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return rc;
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}
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@ -375,10 +372,8 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode, dev_t dev
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}
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}
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if (full_path)
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kfree(full_path);
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kfree(full_path);
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FreeXid(xid);
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return rc;
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}
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@ -447,8 +442,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, struct name
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if file exists or not but no access BB */
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}
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if (full_path)
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kfree(full_path);
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kfree(full_path);
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FreeXid(xid);
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return ERR_PTR(rc);
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}
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@ -478,8 +472,7 @@ cifs_dir_open(struct inode *inode, struct file *file)
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cFYI(1, ("inode = 0x%p and full path is %s", inode, full_path));
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if (full_path)
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kfree(full_path);
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kfree(full_path);
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FreeXid(xid);
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return rc;
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}
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227
fs/cifs/smberr.h
227
fs/cifs/smberr.h
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@ -22,94 +22,155 @@
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#define SUCCESS 0 /* The request was successful. */
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#define ERRDOS 0x01 /* Error is from the core DOS operating system set */
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#define ERRSRV 0x02 /* Error is generated by the file server daemon */
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#define ERRHRD 0x03 /* Error is a hardware error. */
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#define ERRCMD 0xFF /* Command was not in the "SMB" format. */
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#define SUCCESS 0x00 /* The request was successful. */
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#define ERRDOS 0x01 /* Error is from the core DOS operating system set */
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#define ERRSRV 0x02 /* Error is generated by the file server daemon */
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#define ERRHRD 0x03 /* Error is a hardware error. */
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#define ERRCMD 0xFF /* Command was not in the "SMB" format. */
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/* The following error codes may be generated with the SUCCESS error class.*/
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#define SUCCESS 0 /* The request was successful. */
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/*#define SUCCESS 0 The request was successful. */
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/* The following error codes may be generated with the ERRDOS error class.*/
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#define ERRbadfunc 1 /* Invalid function. The server did not recognize or could not perform a system call generated by the server, e.g., set the DIRECTORY attribute on a data file, invalid seek mode. */
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#define ERRbadfile 2 /*File not found. The last component of a file's pathname could not be found. */
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#define ERRbadpath 3 /* Directory invalid. A directory component in a pathname could not be found. */
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#define ERRnofids 4 /* Too many open files. The server has no file handles available. */
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#define ERRnoaccess 5 /* Access denied, the client's context does not permit the requested function. This includes the following conditions: invalid rename command, write to Fid open for read only, read on Fid open for write only, attempt to delete a non-empty directory */
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#define ERRbadfid 6 /* Invalid file handle. The file handle specified was not recognized by the server. */
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#define ERRbadmcb 7 /* Memory control blocks destroyed. */
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#define ERRnomem 8 /* Insufficient server memory to perform the requested function. */
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#define ERRbadmem 9 /* Invalid memory block address. */
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#define ERRbadenv 10 /* Invalid environment. */
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#define ERRbadformat 11 /* Invalid format. */
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#define ERRbadaccess 12 /* Invalid open mode. */
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#define ERRbaddata 13 /* Invalid data (generated only by IOCTL calls within the server). */
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#define ERRbaddrive 15 /* Invalid drive specified. */
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#define ERRremcd 16 /* A Delete Directory request attempted to remove the server's current directory. */
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#define ERRdiffdevice 17 /* Not same device (e.g., a cross volume rename was attempted */
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#define ERRnofiles 18 /* A File Search command can find no more files matching the specified criteria. */
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#define ERRgeneral 31
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#define ERRbadshare 32 /* The sharing mode specified for an Open conflicts with existing FIDs on the file. */
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#define ERRlock 33 /* A Lock request conflicted with an existing lock or specified an invalid mode, or an Unlock requested attempted to remove a lock held by another process. */
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#define ERRunsup 50
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#define ERRnosuchshare 67
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#define ERRfilexists 80 /* The file named in the request already exists. */
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#define ERRinvparm 87
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#define ERRdiskfull 112
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#define ERRinvname 123
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#define ERRinvlevel 124
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#define ERRdirnotempty 145
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#define ERRnotlocked 158
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#define ERRalreadyexists 183
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#define ERRbadpipe 230
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#define ERRpipebusy 231
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#define ERRpipeclosing 232
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#define ERRnotconnected 233
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#define ERRmoredata 234
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#define ERReasnotsupported 282
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#define ErrQuota 0x200 /* The operation would cause a quota limit to be exceeded. */
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#define ErrNotALink 0x201 /* A link operation was performed on a pathname that
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was not a link. */
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#define ERRbadfunc 1 /* Invalid function. The server did not
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recognize or could not perform a
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system call generated by the server,
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e.g., set the DIRECTORY attribute on
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a data file, invalid seek mode. */
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#define ERRbadfile 2 /* File not found. The last component
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of a file's pathname could not be
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found. */
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#define ERRbadpath 3 /* Directory invalid. A directory
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component in a pathname could not be
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found. */
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#define ERRnofids 4 /* Too many open files. The server has
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no file handles available. */
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#define ERRnoaccess 5 /* Access denied, the client's context
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does not permit the requested
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function. This includes the
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following conditions: invalid rename
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command, write to Fid open for read
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only, read on Fid open for write
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only, attempt to delete a non-empty
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directory */
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#define ERRbadfid 6 /* Invalid file handle. The file handle
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specified was not recognized by the
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server. */
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#define ERRbadmcb 7 /* Memory control blocks destroyed. */
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#define ERRnomem 8 /* Insufficient server memory to
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perform the requested function. */
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#define ERRbadmem 9 /* Invalid memory block address. */
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#define ERRbadenv 10 /* Invalid environment. */
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#define ERRbadformat 11 /* Invalid format. */
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#define ERRbadaccess 12 /* Invalid open mode. */
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#define ERRbaddata 13 /* Invalid data (generated only by
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IOCTL calls within the server). */
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#define ERRbaddrive 15 /* Invalid drive specified. */
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#define ERRremcd 16 /* A Delete Directory request attempted
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to remove the server's current
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directory. */
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#define ERRdiffdevice 17 /* Not same device (e.g., a cross
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volume rename was attempted */
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#define ERRnofiles 18 /* A File Search command can find no
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more files matching the specified
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criteria. */
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#define ERRgeneral 31
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#define ERRbadshare 32 /* The sharing mode specified for an
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Open conflicts with existing FIDs on
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the file. */
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#define ERRlock 33 /* A Lock request conflicted with an
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existing lock or specified an
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invalid mode, or an Unlock requested
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attempted to remove a lock held by
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another process. */
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#define ERRunsup 50
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#define ERRnosuchshare 67
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#define ERRfilexists 80 /* The file named in the request
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already exists. */
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#define ERRinvparm 87
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#define ERRdiskfull 112
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#define ERRinvname 123
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#define ERRinvlevel 124
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#define ERRdirnotempty 145
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#define ERRnotlocked 158
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#define ERRalreadyexists 183
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#define ERRbadpipe 230
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#define ERRpipebusy 231
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#define ERRpipeclosing 232
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#define ERRnotconnected 233
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#define ERRmoredata 234
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#define ERReasnotsupported 282
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#define ErrQuota 0x200 /* The operation would cause a quota
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limit to be exceeded. */
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#define ErrNotALink 0x201 /* A link operation was performed on a
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pathname that was not a link. */
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/* Following error codes may be generated with the ERRSRV error
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class.*/
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/* Following error codes may be generated with the ERRSRV error class.*/
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#define ERRerror 1 /* Non-specific error code. It is returned under the following conditions: resource other than disk space exhausted (e.g. TIDs), first SMB command was not negotiate, multiple negotiates attempted, and internal server error. */
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#define ERRbadpw 2 /* Bad password - name/password pair in a TreeConnect or Session Setup are invalid. */
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#define ERRbadtype 3 /* used for indicating DFS referral needed */
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#define ERRaccess 4 /* The client does not have the necessary access rights within the specified context for requested function. */
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#define ERRinvtid 5 /* The Tid specified in a command was invalid. */
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#define ERRinvnetname 6 /* Invalid network name in tree connect. */
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#define ERRinvdevice 7 /* Invalid device - printer request made to non-printer connection or non-printer request made to printer connection. */
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#define ERRqfull 49 /* Print queue full (files) -- returned by open print file. */
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#define ERRqtoobig 50 /* Print queue full -- no space. */
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#define ERRqeof 51 /* EOF on print queue dump */
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#define ERRinvpfid 52 /* Invalid print file FID. */
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#define ERRsmbcmd 64 /* The server did not recognize the command received. */
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#define ERRsrverror 65 /* The server encountered an internal error, e.g., system file unavailable. */
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#define ERRbadBID 66 /* (obsolete) */
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#define ERRfilespecs 67 /* The Fid and pathname parameters contained an invalid combination of values. */
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#define ERRbadLink 68 /* (obsolete) */
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#define ERRbadpermits 69 /* The access permissions specified for a file or directory are not a valid combination. */
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#define ERRbadPID 70
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#define ERRsetattrmode 71 /* attribute (mode) is invalid */
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#define ERRpaused 81 /* Server is paused */
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#define ERRmsgoff 82 /* reserved - messaging off */
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#define ERRnoroom 83 /* reserved - no room for message */
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#define ERRrmuns 87 /* reserved - too many remote names */
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#define ERRtimeout 88 /* operation timed out */
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#define ERRnoresource 89 /* No resources available for request */
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#define ERRtoomanyuids 90 /* Too many UIDs active on this session */
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#define ERRbaduid 91 /* The UID is not known as a valid user */
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#define ERRusempx 250 /* temporarily unable to use raw */
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#define ERRusestd 251 /* temporarily unable to use either raw or mpx */
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#define ERR_NOTIFY_ENUM_DIR 1024
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#define ERRaccountexpired 2239
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#define ERRbadclient 2240
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#define ERRbadLogonTime 2241
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#define ERRpasswordExpired 2242
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#define ERRnetlogonNotStarted 2455
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#define ERRnosupport 0xFFFF
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#define ERRerror 1 /* Non-specific error code. It is
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returned under the following
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conditions: resource other than disk
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space exhausted (e.g. TIDs), first
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SMB command was not negotiate,
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multiple negotiates attempted, and
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internal server error. */
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#define ERRbadpw 2 /* Bad password - name/password pair in
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a TreeConnect or Session Setup are
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invalid. */
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#define ERRbadtype 3 /* used for indicating DFS referral
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needed */
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#define ERRaccess 4 /* The client does not have the
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necessary access rights within the
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specified context for requested
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function. */
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#define ERRinvtid 5 /* The Tid specified in a command was
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invalid. */
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#define ERRinvnetname 6 /* Invalid network name in tree
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connect. */
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#define ERRinvdevice 7 /* Invalid device - printer request
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made to non-printer connection or
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non-printer request made to printer
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connection. */
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#define ERRqfull 49 /* Print queue full (files) -- returned
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by open print file. */
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#define ERRqtoobig 50 /* Print queue full -- no space. */
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#define ERRqeof 51 /* EOF on print queue dump */
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#define ERRinvpfid 52 /* Invalid print file FID. */
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#define ERRsmbcmd 64 /* The server did not recognize the
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command received. */
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#define ERRsrverror 65 /* The server encountered an internal
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error, e.g., system file
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unavailable. */
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#define ERRbadBID 66 /* (obsolete) */
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#define ERRfilespecs 67 /* The Fid and pathname parameters
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contained an invalid combination of
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values. */
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#define ERRbadLink 68 /* (obsolete) */
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#define ERRbadpermits 69 /* The access permissions specified for
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a file or directory are not a valid
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combination. */
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#define ERRbadPID 70
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#define ERRsetattrmode 71 /* attribute (mode) is invalid */
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#define ERRpaused 81 /* Server is paused */
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#define ERRmsgoff 82 /* reserved - messaging off */
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#define ERRnoroom 83 /* reserved - no room for message */
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#define ERRrmuns 87 /* reserved - too many remote names */
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#define ERRtimeout 88 /* operation timed out */
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#define ERRnoresource 89 /* No resources available for request
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*/
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#define ERRtoomanyuids 90 /* Too many UIDs active on this session
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*/
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#define ERRbaduid 91 /* The UID is not known as a valid user
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*/
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#define ERRusempx 250 /* temporarily unable to use raw */
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#define ERRusestd 251 /* temporarily unable to use either raw
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or mpx */
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#define ERR_NOTIFY_ENUM_DIR 1024
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#define ERRaccountexpired 2239
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#define ERRbadclient 2240
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#define ERRbadLogonTime 2241
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#define ERRpasswordExpired 2242
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#define ERRnetlogonNotStarted 2455
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#define ERRnosupport 0xFFFF
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