From: Miklos Szeredi <miklos@szeredi.hu>
cifs_create() did totally the wrong thing with nd->intent.open.flags:
it interpreted nd->intent.open.flags as the original open flags, not
the one transformed for open_namei(). Also it used the intent data
even if it was not filled in (if called from sys_mknod()).
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Steven French <sfrench@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
fs/cifs/dir.c | 27 +++++++++++++--------------
1 files changed, 13 insertions(+), 14 deletions(-)
diff -puN fs/cifs/dir.c~cifs_create-fix fs/cifs/dir.c
--- 25/fs/cifs/dir.c~cifs_create-fix Mon Aug 29 14:23:43 2005
+++ 25-akpm/fs/cifs/dir.c Mon Aug 29 14:23:43 2005
@@ -145,24 +145,23 @@ cifs_create(struct inode *inode, struct
return -ENOMEM;
}
- if(nd) {
- if ((nd->intent.open.flags & O_ACCMODE) == O_RDONLY)
- desiredAccess = GENERIC_READ;
- else if ((nd->intent.open.flags & O_ACCMODE) == O_WRONLY) {
- desiredAccess = GENERIC_WRITE;
- write_only = TRUE;
- } else if ((nd->intent.open.flags & O_ACCMODE) == O_RDWR) {
- /* GENERIC_ALL is too much permission to request */
- /* can cause unnecessary access denied on create */
- /* desiredAccess = GENERIC_ALL; */
- desiredAccess = GENERIC_READ | GENERIC_WRITE;
+ if(nd && (nd->flags & LOOKUP_OPEN)) {
+ int oflags = nd->intent.open.flags;
+
+ desiredAccess = 0;
+ if (oflags & FMODE_READ)
+ desiredAccess |= GENERIC_READ;
+ if (oflags & FMODE_WRITE) {
+ desiredAccess |= GENERIC_WRITE;
+ if (!(oflags & FMODE_READ))
+ write_only = TRUE;
}
- if((nd->intent.open.flags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
+ if((oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
disposition = FILE_CREATE;
- else if((nd->intent.open.flags & (O_CREAT | O_TRUNC)) == (O_CREAT | O_TRUNC))
+ else if((oflags & (O_CREAT | O_TRUNC)) == (O_CREAT | O_TRUNC))
disposition = FILE_OVERWRITE_IF;
- else if((nd->intent.open.flags & O_CREAT) == O_CREAT)
+ else if((oflags & O_CREAT) == O_CREAT)
disposition = FILE_OPEN_IF;
else {
cFYI(1,("Create flag not set in create function"));
_