diff options
author | Pavel Shilovsky <piastry@etersoft.ru> | 2012-02-28 11:23:34 (GMT) |
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committer | Steve French <sfrench@us.ibm.com> | 2012-05-17 01:13:36 (GMT) |
commit | 106dc538abac88e804c63b7fe21ffb09cffaefc7 (patch) | |
tree | f3c4a0075e09c852b42a6f265a4dea42761352ed /fs/cifs | |
parent | 04a6aa8acfac51385ec3e72fac1227e15db78ed9 (diff) | |
download | linux-fsl-qoriq-106dc538abac88e804c63b7fe21ffb09cffaefc7.tar.xz |
CIFS: Separate protocol specific lock type handling
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Diffstat (limited to 'fs/cifs')
-rw-r--r-- | fs/cifs/cifsglob.h | 4 | ||||
-rw-r--r-- | fs/cifs/file.c | 40 | ||||
-rw-r--r-- | fs/cifs/smb1ops.c | 5 |
3 files changed, 33 insertions, 16 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 0e06de1..6943448 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -164,6 +164,10 @@ struct smb_version_operations { struct smb_version_values { char *version_string; + __u32 large_lock_type; + __u32 exclusive_lock_type; + __u32 shared_lock_type; + __u32 unlock_lock_type; }; struct smb_vol { diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 8d5d9c0..ac71f85 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -675,12 +675,13 @@ cifs_find_fid_lock_conflict(struct cifsFileInfo *cfile, __u64 offset, struct cifsLockInfo **conf_lock) { struct cifsLockInfo *li; + struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server; list_for_each_entry(li, &cfile->llist, llist) { if (offset + length <= li->offset || offset >= li->offset + li->length) continue; - else if ((type & LOCKING_ANDX_SHARED_LOCK) && + else if ((type & server->vals->shared_lock_type) && ((netfid == cfile->netfid && current->tgid == li->pid) || type == li->type)) continue; @@ -726,6 +727,7 @@ cifs_lock_test(struct cifsFileInfo *cfile, __u64 offset, __u64 length, int rc = 0; struct cifsLockInfo *conf_lock; struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode); + struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server; bool exist; mutex_lock(&cinode->lock_mutex); @@ -736,7 +738,7 @@ 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 & server->vals->shared_lock_type) flock->fl_type = F_RDLCK; else flock->fl_type = F_WRLCK; @@ -1069,7 +1071,7 @@ cifs_push_locks(struct cifsFileInfo *cfile) static void cifs_read_flock(struct file_lock *flock, __u32 *type, int *lock, int *unlock, - bool *wait_flag) + bool *wait_flag, struct TCP_Server_Info *server) { if (flock->fl_flags & FL_POSIX) cFYI(1, "Posix"); @@ -1088,24 +1090,27 @@ 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 = server->vals->large_lock_type; if (flock->fl_type == F_WRLCK) { cFYI(1, "F_WRLCK "); + *type |= server->vals->exclusive_lock_type; *lock = 1; } else if (flock->fl_type == F_UNLCK) { cFYI(1, "F_UNLCK"); + *type |= server->vals->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 |= server->vals->shared_lock_type; *lock = 1; } else if (flock->fl_type == F_EXLCK) { cFYI(1, "F_EXLCK"); + *type |= server->vals->exclusive_lock_type; *lock = 1; } else if (flock->fl_type == F_SHLCK) { cFYI(1, "F_SHLCK"); - *type |= LOCKING_ANDX_SHARED_LOCK; + *type |= server->vals->shared_lock_type; *lock = 1; } else cFYI(1, "Unknown type of lock"); @@ -1119,6 +1124,7 @@ cifs_getlk(struct file *file, struct file_lock *flock, __u32 type, __u64 length = 1 + flock->fl_end - flock->fl_start; struct cifsFileInfo *cfile = (struct cifsFileInfo *)file->private_data; struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); + struct TCP_Server_Info *server = tcon->ses->server; __u16 netfid = cfile->netfid; if (posix_lck) { @@ -1128,7 +1134,7 @@ cifs_getlk(struct file *file, struct file_lock *flock, __u32 type, if (!rc) return rc; - if (type & LOCKING_ANDX_SHARED_LOCK) + if (type & server->vals->shared_lock_type) posix_lock_type = CIFS_RDLCK; else posix_lock_type = CIFS_WRLCK; @@ -1152,23 +1158,22 @@ cifs_getlk(struct file *file, struct file_lock *flock, __u32 type, flock->fl_type = F_UNLCK; if (rc != 0) cERROR(1, "Error unlocking previously locked " - "range %d during test of lock", rc); + "range %d during test of lock", rc); return 0; } - if (type & LOCKING_ANDX_SHARED_LOCK) { + if (type & server->vals->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 | server->vals->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 | server->vals->shared_lock_type, 0, 0); flock->fl_type = F_RDLCK; if (rc != 0) cERROR(1, "Error unlocking previously locked " @@ -1307,6 +1312,7 @@ cifs_setlk(struct file *file, struct file_lock *flock, __u32 type, __u64 length = 1 + flock->fl_end - flock->fl_start; struct cifsFileInfo *cfile = (struct cifsFileInfo *)file->private_data; struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); + struct TCP_Server_Info *server = tcon->ses->server; __u16 netfid = cfile->netfid; if (posix_lck) { @@ -1316,7 +1322,7 @@ 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 & server->vals->shared_lock_type) posix_lock_type = CIFS_RDLCK; else posix_lock_type = CIFS_WRLCK; @@ -1380,11 +1386,13 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *flock) "end: %lld", cmd, flock->fl_flags, flock->fl_type, flock->fl_start, flock->fl_end); - cifs_read_flock(flock, &type, &lock, &unlock, &wait_flag); - - cifs_sb = CIFS_SB(file->f_path.dentry->d_sb); cfile = (struct cifsFileInfo *)file->private_data; tcon = tlink_tcon(cfile->tlink); + + cifs_read_flock(flock, &type, &lock, &unlock, &wait_flag, + tcon->ses->server); + + cifs_sb = CIFS_SB(file->f_path.dentry->d_sb); netfid = cfile->netfid; cinode = CIFS_I(file->f_path.dentry->d_inode); diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c index fa486f0..af48a8b 100644 --- a/fs/cifs/smb1ops.c +++ b/fs/cifs/smb1ops.c @@ -20,6 +20,7 @@ #include "cifsglob.h" #include "cifsproto.h" #include "cifs_debug.h" +#include "cifspdu.h" /* * An NT cancel request header looks just like the original request except: @@ -65,4 +66,8 @@ struct smb_version_operations smb1_operations = { struct smb_version_values smb1_values = { .version_string = SMB1_VERSION_STRING, + .large_lock_type = LOCKING_ANDX_LARGE_FILES, + .exclusive_lock_type = 0, + .shared_lock_type = LOCKING_ANDX_SHARED_LOCK, + .unlock_lock_type = 0, }; |