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[PATCH] cifs_create() fix

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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>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Miklos Szeredi 2005-09-06 15:18:26 -07:00 committed by Linus Torvalds
parent e922efc342
commit e08fc0457a
1 changed files with 13 additions and 14 deletions
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27
fs/cifs/dir.c
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@ -145,24 +145,23 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
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"));