Signed-off-by: Pavel Shilovsky <piastry@xxxxxxxxxxx>
---
fs/cifs/file.c | 48 +++++++++++++++++++++++++++++++++++++-----------
1 files changed, 37 insertions(+), 11 deletions(-)
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 469bf2d..4154941 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -684,6 +684,30 @@ cifs_locks_delete_block(struct file_lock *waiter)
unlock_flocks();
}
+static inline __u32
+large_lock_type(void)
+{
+ return LOCKING_ANDX_LARGE_FILES;
+}
+
+static inline __u32
+exclusive_lock_type(void)
+{
+ return 0;
+}
+
+static inline __u32
+shared_lock_type(void)
+{
+ return LOCKING_ANDX_SHARED_LOCK;
+}
+
+static inline __u32
+unlock_lock_type(void)
+{
+ return 0;
+}
+
static bool
__cifs_find_fid_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
__u64 length, __u8 type, __u16 netfid,
@@ -695,7 +719,7 @@ __cifs_find_fid_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
if (offset + length <= li->offset ||
offset >= li->offset + li->length)
continue;
- else if ((type & LOCKING_ANDX_SHARED_LOCK) &&
+ else if ((type & shared_lock_type()) &&
((netfid == cfile->netfid && current->tgid == li->pid)
|| type == li->type))
continue;
@@ -764,7 +788,7 @@ cifs_lock_test(struct cifsFileInfo *cfile, __u64 offset, __u64 length,
flock->fl_start = conf_lock->offset;
flock->fl_end = conf_lock->offset + conf_lock->length - 1;
flock->fl_pid = conf_lock->pid;
- if (conf_lock->type & LOCKING_ANDX_SHARED_LOCK)
+ if (conf_lock->type & shared_lock_type())
flock->fl_type = F_RDLCK;
else
flock->fl_type = F_WRLCK;
@@ -1136,24 +1160,27 @@ cifs_read_flock(struct file_lock *flock, __u32 *type, int *lock, int *unlock,
(~(FL_POSIX | FL_FLOCK | FL_SLEEP | FL_ACCESS | FL_LEASE)))
cFYI(1, "Unknown lock flags 0x%x", flock->fl_flags);
- *type = LOCKING_ANDX_LARGE_FILES;
+ *type = large_lock_type();
if (flock->fl_type == F_WRLCK) {
cFYI(1, "F_WRLCK ");
+ *type |= exclusive_lock_type();
*lock = 1;
} else if (flock->fl_type == F_UNLCK) {
cFYI(1, "F_UNLCK");
+ *type |= unlock_lock_type();
*unlock = 1;
/* Check if unlock includes more than one lock range */
} else if (flock->fl_type == F_RDLCK) {
cFYI(1, "F_RDLCK");
- *type |= LOCKING_ANDX_SHARED_LOCK;
+ *type |= shared_lock_type();
*lock = 1;
} else if (flock->fl_type == F_EXLCK) {
cFYI(1, "F_EXLCK");
+ *type |= exclusive_lock_type();
*lock = 1;
} else if (flock->fl_type == F_SHLCK) {
cFYI(1, "F_SHLCK");
- *type |= LOCKING_ANDX_SHARED_LOCK;
+ *type |= shared_lock_type();
*lock = 1;
} else
cFYI(1, "Unknown type of lock");
@@ -1176,7 +1203,7 @@ cifs_getlk(struct file *file, struct file_lock *flock, __u32 type,
if (!rc)
return rc;
- if (type & LOCKING_ANDX_SHARED_LOCK)
+ if (type & shared_lock_type())
posix_lock_type = CIFS_RDLCK;
else
posix_lock_type = CIFS_WRLCK;
@@ -1204,19 +1231,18 @@ cifs_getlk(struct file *file, struct file_lock *flock, __u32 type,
return 0;
}
- if (type & LOCKING_ANDX_SHARED_LOCK) {
+ if (type & shared_lock_type()) {
flock->fl_type = F_WRLCK;
return 0;
}
rc = CIFSSMBLock(xid, tcon, netfid, current->tgid, length,
flock->fl_start, 0, 1,
- type | LOCKING_ANDX_SHARED_LOCK, 0, 0);
+ type | shared_lock_type(), 0, 0);
if (rc == 0) {
rc = CIFSSMBLock(xid, tcon, netfid, current->tgid,
length, flock->fl_start, 1, 0,
- type | LOCKING_ANDX_SHARED_LOCK,
- 0, 0);
+ type | shared_lock_type(), 0, 0);
flock->fl_type = F_RDLCK;
if (rc != 0)
cERROR(1, "Error unlocking previously locked "
@@ -1364,7 +1390,7 @@ cifs_setlk(struct file *file, struct file_lock *flock, __u32 type,
if (!rc || rc < 0)
return rc;
- if (type & LOCKING_ANDX_SHARED_LOCK)
+ if (type & shared_lock_type())
posix_lock_type = CIFS_RDLCK;
else
posix_lock_type = CIFS_WRLCK;
--
1.7.1
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