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authorSteve French <smfrench@austin.rr.com>2005-04-28 22:41:05 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-28 22:41:05 -0700
commitd14537f103bf746ca766f739f9f5a5bf7a8b4806 (patch)
tree421be78e49566536638effd2fa3f222686cf27fd /fs
parent6a0b48245a135cd132e747815854e3999967f8a7 (diff)
[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>
Diffstat (limited to 'fs')
-rw-r--r--fs/cifs/dir.c83
-rw-r--r--fs/cifs/smberr.h227
2 files changed, 182 insertions, 128 deletions
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index f54e1866f0f..12ba81d7b07 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -284,51 +284,48 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
/* mknod case - do not leave file open */
CIFSSMBClose(xid, pTcon, fileHandle);
} else if(newinode) {
- pCifsFile = (struct cifsFileInfo *)
+ pCifsFile =
kmalloc(sizeof (struct cifsFileInfo), GFP_KERNEL);
-
- if (pCifsFile) {
- memset((char *)pCifsFile, 0,
- sizeof (struct cifsFileInfo));
- pCifsFile->netfid = fileHandle;
- pCifsFile->pid = current->tgid;
- pCifsFile->pInode = newinode;
- pCifsFile->invalidHandle = FALSE;
- pCifsFile->closePend = FALSE;
- init_MUTEX(&pCifsFile->fh_sem);
- /* put the following in at open now */
- /* pCifsFile->pfile = file; */
- write_lock(&GlobalSMBSeslock);
- list_add(&pCifsFile->tlist,&pTcon->openFileList);
- pCifsInode = CIFS_I(newinode);
- if(pCifsInode) {
+
+ if(pCifsFile == NULL)
+ goto cifs_create_out;
+ memset((char *)pCifsFile, 0,
+ sizeof (struct cifsFileInfo));
+ pCifsFile->netfid = fileHandle;
+ pCifsFile->pid = current->tgid;
+ pCifsFile->pInode = newinode;
+ pCifsFile->invalidHandle = FALSE;
+ pCifsFile->closePend = FALSE;
+ init_MUTEX(&pCifsFile->fh_sem);
+ /* set the following in open now
+ pCifsFile->pfile = file; */
+ write_lock(&GlobalSMBSeslock);
+ list_add(&pCifsFile->tlist,&pTcon->openFileList);
+ pCifsInode = CIFS_I(newinode);
+ if(pCifsInode) {
/* if readable file instance put first in list*/
- if (write_only == TRUE) {
- list_add_tail(&pCifsFile->flist,
- &pCifsInode->openFileList);
- } else {
- list_add(&pCifsFile->flist,
- &pCifsInode->openFileList);
- }
- if((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
- pCifsInode->clientCanCacheAll = TRUE;
- pCifsInode->clientCanCacheRead = TRUE;
- cFYI(1,("Exclusive Oplock granted on inode %p",
- newinode));
- } else if((oplock & 0xF) == OPLOCK_READ)
- pCifsInode->clientCanCacheRead = TRUE;
+ if (write_only == TRUE) {
+ list_add_tail(&pCifsFile->flist,
+ &pCifsInode->openFileList);
+ } else {
+ list_add(&pCifsFile->flist,
+ &pCifsInode->openFileList);
}
- write_unlock(&GlobalSMBSeslock);
+ if((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
+ pCifsInode->clientCanCacheAll = TRUE;
+ pCifsInode->clientCanCacheRead = TRUE;
+ cFYI(1,("Exclusive Oplock for inode %p",
+ newinode));
+ } else if((oplock & 0xF) == OPLOCK_READ)
+ pCifsInode->clientCanCacheRead = TRUE;
}
+ write_unlock(&GlobalSMBSeslock);
}
}
-
- if (buf)
- kfree(buf);
- if (full_path)
- kfree(full_path);
+cifs_create_out:
+ kfree(buf);
+ kfree(full_path);
FreeXid(xid);
-
return rc;
}
@@ -375,10 +372,8 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode, dev_t dev
}
}
- if (full_path)
- kfree(full_path);
+ kfree(full_path);
FreeXid(xid);
-
return rc;
}
@@ -447,8 +442,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, struct name
if file exists or not but no access BB */
}
- if (full_path)
- kfree(full_path);
+ kfree(full_path);
FreeXid(xid);
return ERR_PTR(rc);
}
@@ -478,8 +472,7 @@ cifs_dir_open(struct inode *inode, struct file *file)
cFYI(1, ("inode = 0x%p and full path is %s", inode, full_path));
- if (full_path)
- kfree(full_path);
+ kfree(full_path);
FreeXid(xid);
return rc;
}
diff --git a/fs/cifs/smberr.h b/fs/cifs/smberr.h
index e21f1384661..1b53dcd0f2e 100644
--- a/fs/cifs/smberr.h
+++ b/fs/cifs/smberr.h
@@ -22,94 +22,155 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#define SUCCESS 0 /* The request was successful. */
-#define ERRDOS 0x01 /* Error is from the core DOS operating system set */
-#define ERRSRV 0x02 /* Error is generated by the file server daemon */
-#define ERRHRD 0x03 /* Error is a hardware error. */
-#define ERRCMD 0xFF /* Command was not in the "SMB" format. */
+#define SUCCESS 0x00 /* The request was successful. */
+#define ERRDOS 0x01 /* Error is from the core DOS operating system set */
+#define ERRSRV 0x02 /* Error is generated by the file server daemon */
+#define ERRHRD 0x03 /* Error is a hardware error. */
+#define ERRCMD 0xFF /* Command was not in the "SMB" format. */
/* The following error codes may be generated with the SUCCESS error class.*/
-#define SUCCESS 0 /* The request was successful. */
+/*#define SUCCESS 0 The request was successful. */
/* The following error codes may be generated with the ERRDOS error class.*/
-#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. */
-#define ERRbadfile 2 /*File not found. The last component of a file's pathname could not be found. */
-#define ERRbadpath 3 /* Directory invalid. A directory component in a pathname could not be found. */
-#define ERRnofids 4 /* Too many open files. The server has no file handles available. */
-#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 */
-#define ERRbadfid 6 /* Invalid file handle. The file handle specified was not recognized by the server. */
-#define ERRbadmcb 7 /* Memory control blocks destroyed. */
-#define ERRnomem 8 /* Insufficient server memory to perform the requested function. */
-#define ERRbadmem 9 /* Invalid memory block address. */
-#define ERRbadenv 10 /* Invalid environment. */
-#define ERRbadformat 11 /* Invalid format. */
-#define ERRbadaccess 12 /* Invalid open mode. */
-#define ERRbaddata 13 /* Invalid data (generated only by IOCTL calls within the server). */
-#define ERRbaddrive 15 /* Invalid drive specified. */
-#define ERRremcd 16 /* A Delete Directory request attempted to remove the server's current directory. */
-#define ERRdiffdevice 17 /* Not same device (e.g., a cross volume rename was attempted */
-#define ERRnofiles 18 /* A File Search command can find no more files matching the specified criteria. */
-#define ERRgeneral 31
-#define ERRbadshare 32 /* The sharing mode specified for an Open conflicts with existing FIDs on the file. */
-#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. */
-#define ERRunsup 50
-#define ERRnosuchshare 67
-#define ERRfilexists 80 /* The file named in the request already exists. */
-#define ERRinvparm 87
-#define ERRdiskfull 112
-#define ERRinvname 123
-#define ERRinvlevel 124
-#define ERRdirnotempty 145
-#define ERRnotlocked 158
-#define ERRalreadyexists 183
-#define ERRbadpipe 230
-#define ERRpipebusy 231
-#define ERRpipeclosing 232
-#define ERRnotconnected 233
-#define ERRmoredata 234
-#define ERReasnotsupported 282
-#define ErrQuota 0x200 /* The operation would cause a quota limit to be exceeded. */
-#define ErrNotALink 0x201 /* A link operation was performed on a pathname that
- was not a link. */
+#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. */
+#define ERRbadfile 2 /* File not found. The last component
+ of a file's pathname could not be
+ found. */
+#define ERRbadpath 3 /* Directory invalid. A directory
+ component in a pathname could not be
+ found. */
+#define ERRnofids 4 /* Too many open files. The server has
+ no file handles available. */
+#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 */
+#define ERRbadfid 6 /* Invalid file handle. The file handle
+ specified was not recognized by the
+ server. */
+#define ERRbadmcb 7 /* Memory control blocks destroyed. */
+#define ERRnomem 8 /* Insufficient server memory to
+ perform the requested function. */
+#define ERRbadmem 9 /* Invalid memory block address. */
+#define ERRbadenv 10 /* Invalid environment. */
+#define ERRbadformat 11 /* Invalid format. */
+#define ERRbadaccess 12 /* Invalid open mode. */
+#define ERRbaddata 13 /* Invalid data (generated only by
+ IOCTL calls within the server). */
+#define ERRbaddrive 15 /* Invalid drive specified. */
+#define ERRremcd 16 /* A Delete Directory request attempted
+ to remove the server's current
+ directory. */
+#define ERRdiffdevice 17 /* Not same device (e.g., a cross
+ volume rename was attempted */
+#define ERRnofiles 18 /* A File Search command can find no
+ more files matching the specified
+ criteria. */
+#define ERRgeneral 31
+#define ERRbadshare 32 /* The sharing mode specified for an
+ Open conflicts with existing FIDs on
+ the file. */
+#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. */
+#define ERRunsup 50
+#define ERRnosuchshare 67
+#define ERRfilexists 80 /* The file named in the request
+ already exists. */
+#define ERRinvparm 87
+#define ERRdiskfull 112
+#define ERRinvname 123
+#define ERRinvlevel 124
+#define ERRdirnotempty 145
+#define ERRnotlocked 158
+#define ERRalreadyexists 183
+#define ERRbadpipe 230
+#define ERRpipebusy 231
+#define ERRpipeclosing 232
+#define ERRnotconnected 233
+#define ERRmoredata 234
+#define ERReasnotsupported 282
+#define ErrQuota 0x200 /* The operation would cause a quota
+ limit to be exceeded. */
+#define ErrNotALink 0x201 /* A link operation was performed on a
+ pathname that was not a link. */
-/* Following error codes may be generated with the ERRSRV error
-class.*/
+/* Following error codes may be generated with the ERRSRV error class.*/
-#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. */
-#define ERRbadpw 2 /* Bad password - name/password pair in a TreeConnect or Session Setup are invalid. */
-#define ERRbadtype 3 /* used for indicating DFS referral needed */
-#define ERRaccess 4 /* The client does not have the necessary access rights within the specified context for requested function. */
-#define ERRinvtid 5 /* The Tid specified in a command was invalid. */
-#define ERRinvnetname 6 /* Invalid network name in tree connect. */
-#define ERRinvdevice 7 /* Invalid device - printer request made to non-printer connection or non-printer request made to printer connection. */
-#define ERRqfull 49 /* Print queue full (files) -- returned by open print file. */
-#define ERRqtoobig 50 /* Print queue full -- no space. */
-#define ERRqeof 51 /* EOF on print queue dump */
-#define ERRinvpfid 52 /* Invalid print file FID. */
-#define ERRsmbcmd 64 /* The server did not recognize the command received. */
-#define ERRsrverror 65 /* The server encountered an internal error, e.g., system file unavailable. */
-#define ERRbadBID 66 /* (obsolete) */
-#define ERRfilespecs 67 /* The Fid and pathname parameters contained an invalid combination of values. */
-#define ERRbadLink 68 /* (obsolete) */
-#define ERRbadpermits 69 /* The access permissions specified for a file or directory are not a valid combination. */
-#define ERRbadPID 70
-#define ERRsetattrmode 71 /* attribute (mode) is invalid */
-#define ERRpaused 81 /* Server is paused */
-#define ERRmsgoff 82 /* reserved - messaging off */
-#define ERRnoroom 83 /* reserved - no room for message */
-#define ERRrmuns 87 /* reserved - too many remote names */
-#define ERRtimeout 88 /* operation timed out */
-#define ERRnoresource 89 /* No resources available for request */
-#define ERRtoomanyuids 90 /* Too many UIDs active on this session */
-#define ERRbaduid 91 /* The UID is not known as a valid user */
-#define ERRusempx 250 /* temporarily unable to use raw */
-#define ERRusestd 251 /* temporarily unable to use either raw or mpx */
-#define ERR_NOTIFY_ENUM_DIR 1024
-#define ERRaccountexpired 2239
-#define ERRbadclient 2240
-#define ERRbadLogonTime 2241
-#define ERRpasswordExpired 2242
-#define ERRnetlogonNotStarted 2455
-#define ERRnosupport 0xFFFF
+#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. */
+#define ERRbadpw 2 /* Bad password - name/password pair in
+ a TreeConnect or Session Setup are
+ invalid. */
+#define ERRbadtype 3 /* used for indicating DFS referral
+ needed */
+#define ERRaccess 4 /* The client does not have the
+ necessary access rights within the
+ specified context for requested
+ function. */
+#define ERRinvtid 5 /* The Tid specified in a command was
+ invalid. */
+#define ERRinvnetname 6 /* Invalid network name in tree
+ connect. */
+#define ERRinvdevice 7 /* Invalid device - printer request
+ made to non-printer connection or
+ non-printer request made to printer
+ connection. */
+#define ERRqfull 49 /* Print queue full (files) -- returned
+ by open print file. */
+#define ERRqtoobig 50 /* Print queue full -- no space. */
+#define ERRqeof 51 /* EOF on print queue dump */
+#define ERRinvpfid 52 /* Invalid print file FID. */
+#define ERRsmbcmd 64 /* The server did not recognize the
+ command received. */
+#define ERRsrverror 65 /* The server encountered an internal
+ error, e.g., system file
+ unavailable. */
+#define ERRbadBID 66 /* (obsolete) */
+#define ERRfilespecs 67 /* The Fid and pathname parameters
+ contained an invalid combination of
+ values. */
+#define ERRbadLink 68 /* (obsolete) */
+#define ERRbadpermits 69 /* The access permissions specified for
+ a file or directory are not a valid
+ combination. */
+#define ERRbadPID 70
+#define ERRsetattrmode 71 /* attribute (mode) is invalid */
+#define ERRpaused 81 /* Server is paused */
+#define ERRmsgoff 82 /* reserved - messaging off */
+#define ERRnoroom 83 /* reserved - no room for message */
+#define ERRrmuns 87 /* reserved - too many remote names */
+#define ERRtimeout 88 /* operation timed out */
+#define ERRnoresource 89 /* No resources available for request
+ */
+#define ERRtoomanyuids 90 /* Too many UIDs active on this session
+ */
+#define ERRbaduid 91 /* The UID is not known as a valid user
+ */
+#define ERRusempx 250 /* temporarily unable to use raw */
+#define ERRusestd 251 /* temporarily unable to use either raw
+ or mpx */
+#define ERR_NOTIFY_ENUM_DIR 1024
+#define ERRaccountexpired 2239
+#define ERRbadclient 2240
+#define ERRbadLogonTime 2241
+#define ERRpasswordExpired 2242
+#define ERRnetlogonNotStarted 2455
+#define ERRnosupport 0xFFFF