[PATCH] cifs: CIFS ioctl needed by umount.cifs utility
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 3d5365b..461a706 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -190,6 +190,7 @@
#ifdef CONFIG_CIFS_EXPERIMENTAL
/* BB we could add a second check for a QFS Unix capability bit */
+/* BB FIXME check CIFS_POSIX_EXTENSIONS Unix cap first FIXME BB */
if (pTcon->ses->capabilities & CAP_UNIX)
rc = CIFSSMBQFSPosixInfo(xid, pTcon, buf);
@@ -599,6 +600,9 @@
#ifdef CONFIG_CIFS_EXPERIMENTAL
.dir_notify = cifs_dir_notify,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
+#ifdef CONFIG_CIFS_POSIX
+ .ioctl = cifs_ioctl,
+#endif /* CONFIG_CIFS_POSIX */
};
static void
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index 5b35289..e3e9261 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -1556,7 +1556,7 @@
#define CIFS_UNIX_POSIX_ACL_CAP 0x00000002 /* support getfacl/setfacl */
#define CIFS_UNIX_XATTR_CAP 0x00000004 /* support new namespace */
#define CIFS_UNIX_EXTATTR_CAP 0x00000008 /* support chattr/chflag */
-
+#define CIFS_POSIX_EXTENSIONS 0x00000010 /* support for new QFSInfo */
typedef struct {
/* For undefined recommended transfer size return -1 in that field */
__le32 OptimalTransferSize; /* bsize on some os, iosize on other os */
diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index a4f1c34a..711bb7a 100644
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -29,6 +29,8 @@
#include "cifs_debug.h"
#include "cifsfs.h"
+#define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2)
+
int cifs_ioctl (struct inode * inode, struct file * filep,
unsigned int command, unsigned long arg)
{
@@ -36,8 +38,8 @@
#ifdef CONFIG_CIFS_POSIX
__u64 ExtAttrBits = 0;
__u64 ExtAttrMask = 0;
- __u64 caps;
#endif /* CONFIG_CIFS_POSIX */
+ __u64 caps;
int xid;
struct cifs_sb_info *cifs_sb;
struct cifsTconInfo *tcon;
@@ -46,12 +48,11 @@
xid = GetXid();
+ cFYI(1,("ioctl file %p cmd %u arg %lu",filep,command,arg));
+
cifs_sb = CIFS_SB(inode->i_sb);
tcon = cifs_sb->tcon;
- if (pSMBFile == NULL)
- goto cifs_ioctl_out;
-#ifdef CONFIG_CIFS_POSIX
if(tcon)
caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
else {
@@ -59,10 +60,22 @@
goto cifs_ioctl_out;
}
- cFYI(1,("ioctl file %p cmd %u arg %lu",filep,command,arg));
switch(command) {
+ case CIFS_IOC_CHECKUMOUNT:
+ cFYI(1,("User unmount attempted"));
+ /* BB FIXME - add missing code here FIXME */
+ if(cifs_sb->mnt_uid == current->uid)
+ rc = 0;
+ else {
+ rc = -EACCES;
+ cFYI(1,("uids do not match"));
+ }
+ break;
+#ifdef CONFIG_CIFS_POSIX
case EXT2_IOC_GETFLAGS:
if(CIFS_UNIX_EXTATTR_CAP & caps) {
+ if (pSMBFile == NULL)
+ goto cifs_ioctl_out;
rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
&ExtAttrBits, &ExtAttrMask);
if(rc == 0)
@@ -78,17 +91,19 @@
rc = -EFAULT;
goto cifs_ioctl_out;
}
- /* rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
+ if (pSMBFile == NULL)
+ goto cifs_ioctl_out;
+ /* 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"));
- return rc;
+ break;
}
-#endif /* CONFIG_CIFS_POSIX */
cifs_ioctl_out:
FreeXid(xid);