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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 13:43:55 +08:00
linux-next/fs/cifs/ioctl.c
Joe Perches b6b38f704a [CIFS] Neaten cERROR and cFYI macros, reduce text space
Neaten cERROR and cFYI macros, reduce text space
~2.5K

Convert '__FILE__ ": " fmt' to '"%s: " fmt', __FILE__' to save text space
Surround macros with do {} while
Add parentheses to macros
Make statement expression macro from macro with assign
Remove now unnecessary parentheses from cFYI and cERROR uses

defconfig with CIFS support old
$ size fs/cifs/built-in.o
   text	   data	    bss	    dec	    hex	filename
 156012	   1760	    148	 157920	  268e0	fs/cifs/built-in.o

defconfig with CIFS support old
$ size fs/cifs/built-in.o
   text	   data	    bss	    dec	    hex	filename
 153508	   1760	    148	 155416	  25f18	fs/cifs/built-in.o

allyesconfig old:
$ size fs/cifs/built-in.o
   text	   data	    bss	    dec	    hex	filename
 309138	   3864	  74824	 387826	  5eaf2	fs/cifs/built-in.o

allyesconfig new
$ size fs/cifs/built-in.o
   text	   data	    bss	    dec	    hex	filename
 305655	   3864	  74824	 384343	  5dd57	fs/cifs/built-in.o

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-04-21 03:50:45 +00:00

111 lines
2.8 KiB
C

/*
* fs/cifs/ioctl.c
*
* vfs operations that deal with io control
*
* Copyright (C) International Business Machines Corp., 2005,2007
* Author(s): Steve French (sfrench@us.ibm.com)
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/fs.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifsfs.h"
#define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2)
long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
{
struct inode *inode = filep->f_dentry->d_inode;
int rc = -ENOTTY; /* strange error - but the precedent */
int xid;
struct cifs_sb_info *cifs_sb;
#ifdef CONFIG_CIFS_POSIX
__u64 ExtAttrBits = 0;
__u64 ExtAttrMask = 0;
__u64 caps;
struct cifsTconInfo *tcon;
struct cifsFileInfo *pSMBFile =
(struct cifsFileInfo *)filep->private_data;
#endif /* CONFIG_CIFS_POSIX */
xid = GetXid();
cFYI(1, "ioctl file %p cmd %u arg %lu", filep, command, arg);
cifs_sb = CIFS_SB(inode->i_sb);
#ifdef CONFIG_CIFS_POSIX
tcon = cifs_sb->tcon;
if (tcon)
caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
else {
rc = -EIO;
FreeXid(xid);
return -EIO;
}
#endif /* CONFIG_CIFS_POSIX */
switch (command) {
case CIFS_IOC_CHECKUMOUNT:
cFYI(1, "User unmount attempted");
if (cifs_sb->mnt_uid == current_uid())
rc = 0;
else {
rc = -EACCES;
cFYI(1, "uids do not match");
}
break;
#ifdef CONFIG_CIFS_POSIX
case FS_IOC_GETFLAGS:
if (CIFS_UNIX_EXTATTR_CAP & caps) {
if (pSMBFile == NULL)
break;
rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
&ExtAttrBits, &ExtAttrMask);
if (rc == 0)
rc = put_user(ExtAttrBits &
FS_FL_USER_VISIBLE,
(int __user *)arg);
}
break;
case FS_IOC_SETFLAGS:
if (CIFS_UNIX_EXTATTR_CAP & caps) {
if (get_user(ExtAttrBits, (int __user *)arg)) {
rc = -EFAULT;
break;
}
if (pSMBFile == NULL)
break;
/* rc= CIFSGetExtAttr(xid,tcon,pSMBFile->netfid,
extAttrBits, &ExtAttrMask);*/
}
cFYI(1, "set flags not implemented yet");
break;
#endif /* CONFIG_CIFS_POSIX */
default:
cFYI(1, "unsupported ioctl");
break;
}
FreeXid(xid);
return rc;
}