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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-28 09:50:25 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-28 09:50:25 -0800 |
| commit | 3bad8bb5cd3048a67df43ac6b1e2f191f19d9ff0 (patch) | |
| tree | bc18e38958f63b6ffb8514e16729f094925e4d5b /fs/cifs/ioctl.c | |
| parent | kernel/extable: fix address-checks for core_kernel and init areas (diff) | |
| parent | [CIFS] Do not use btrfs refcopy ioctl for SMB2 copy offload (diff) | |
| download | linux-dev-3bad8bb5cd3048a67df43ac6b1e2f191f19d9ff0.tar.xz linux-dev-3bad8bb5cd3048a67df43ac6b1e2f191f19d9ff0.zip | |
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"SMB3 "validate negotiate" is needed to prevent certain types of
downgrade attacks.
Also changes SMB2/SMB3 copy offload from using the BTRFS copy ioctl
(BTRFS_IOC_CLONE) to a cifs specific ioctl (CIFS_IOC_COPYCHUNK_FILE)
to address Christoph's comment that there are semantic differences
between requesting copy offload in which copy-on-write is mandatory
(as in the BTRFS ioctl) and optional in the SMB2/SMB3 case. Also
fixes SMB2/SMB3 copychunk for large files"
* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
[CIFS] Do not use btrfs refcopy ioctl for SMB2 copy offload
Check SMB3 dialects against downgrade attacks
Removed duplicated (and unneeded) goto
CIFS: Fix SMB2/SMB3 Copy offload support (refcopy) for large files
Diffstat (limited to 'fs/cifs/ioctl.c')
| -rw-r--r-- | fs/cifs/ioctl.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c index 409b45eefe70..77492301cc2b 100644 --- a/fs/cifs/ioctl.c +++ b/fs/cifs/ioctl.c @@ -26,13 +26,15 @@ #include <linux/mount.h> #include <linux/mm.h> #include <linux/pagemap.h> -#include <linux/btrfs.h> #include "cifspdu.h" #include "cifsglob.h" #include "cifsproto.h" #include "cifs_debug.h" #include "cifsfs.h" +#define CIFS_IOCTL_MAGIC 0xCF +#define CIFS_IOC_COPYCHUNK_FILE _IOW(CIFS_IOCTL_MAGIC, 3, int) + static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file, unsigned long srcfd, u64 off, u64 len, u64 destoff) { @@ -213,7 +215,7 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg) cifs_dbg(FYI, "set compress flag rc %d\n", rc); } break; - case BTRFS_IOC_CLONE: + case CIFS_IOC_COPYCHUNK_FILE: rc = cifs_ioctl_clone(xid, filep, arg, 0, 0, 0); break; default: |