diff options
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/CHANGES | 5 | ||||
| -rw-r--r-- | fs/cifs/cifsfs.h | 2 | ||||
| -rw-r--r-- | fs/cifs/cifsproto.h | 2 | ||||
| -rw-r--r-- | fs/cifs/cifssmb.c | 36 | ||||
| -rw-r--r-- | fs/cifs/file.c | 4 |
5 files changed, 42 insertions, 7 deletions
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES index 1a27ecb46c9a..dfd364c66313 100644 --- a/fs/cifs/CHANGES +++ b/fs/cifs/CHANGES @@ -1,3 +1,8 @@ +Version 1.43 +------------ +POSIX locking to servers which support CIFS POSIX Extensions +(disabled by default controlled by proc/fs/cifs/Experimental) + Version 1.42 ------------ Fix slow oplock break when mounted to different servers at the same time and diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h index 4e829dc672a6..c98755dca868 100644 --- a/fs/cifs/cifsfs.h +++ b/fs/cifs/cifsfs.h @@ -99,5 +99,5 @@ extern ssize_t cifs_getxattr(struct dentry *, const char *, void *, size_t); extern ssize_t cifs_listxattr(struct dentry *, char *, size_t); extern int cifs_ioctl (struct inode * inode, struct file * filep, unsigned int command, unsigned long arg); -#define CIFS_VERSION "1.42" +#define CIFS_VERSION "1.43" #endif /* _CIFSFS_H */ diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 2879ba343ca7..310ea2f0e0bf 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -267,7 +267,7 @@ extern int CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, const int waitFlag); extern int CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, const __u16 smb_file_id, const int get_flag, - const __u64 len, const __u64 offset, + const __u64 len, struct file_lock *, const __u16 lock_type, const int waitFlag); extern int CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon); extern int CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses); diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index fd36892eda55..20d5e748f41e 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -1355,7 +1355,8 @@ CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, int CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, const __u16 smb_file_id, const int get_flag, const __u64 len, - const __u64 lkoffset, const __u16 lock_type, const int waitFlag) + struct file_lock *pLockData, const __u16 lock_type, + const int waitFlag) { struct smb_com_transaction2_sfi_req *pSMB = NULL; struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; @@ -1366,6 +1367,10 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, __u16 params, param_offset, offset, byte_count, count; cFYI(1, ("Posix Lock")); + + if(pLockData == NULL) + return EINVAL; + rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); if (rc) @@ -1406,7 +1411,7 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, if(waitFlag) parm_data->lock_flags = 1; parm_data->pid = cpu_to_le32(current->tgid); - parm_data->start = lkoffset; + parm_data->start = cpu_to_le64(pLockData->fl_start); parm_data->length = len; /* normalize negative numbers */ pSMB->DataOffset = cpu_to_le16(offset); @@ -1419,8 +1424,33 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { cFYI(1, ("Send error in Posix Lock = %d", rc)); - } + } else if (get_flag) { + /* lock structure can be returned on get */ + __u16 data_offset; + __u16 data_count; + rc = validate_t2((struct smb_t2_rsp *)pSMBr); + if (rc || (pSMBr->ByteCount < sizeof(struct cifs_posix_lock))) { + rc = -EIO; /* bad smb */ + goto plk_err_exit; + } + if(pLockData == NULL) { + rc = -EINVAL; + goto plk_err_exit; + } + data_offset = le16_to_cpu(pSMBr->t2.DataOffset); + data_count = le16_to_cpu(pSMBr->t2.DataCount); + if(data_count < sizeof(struct cifs_posix_lock)) { + rc = -EIO; + goto plk_err_exit; + } + parm_data = (struct cifs_posix_lock *) + ((char *)&pSMBr->hdr.Protocol + data_offset); + if(parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) + pLockData->fl_type = F_UNLCK; + } + +plk_err_exit: if (pSMB) cifs_small_buf_release(pSMB); diff --git a/fs/cifs/file.c b/fs/cifs/file.c index e152bf6afa60..7ef30efe8f98 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -656,7 +656,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock) else posix_lock_type = CIFS_WRLCK; rc = CIFSSMBPosixLock(xid, pTcon, netfid, 1 /* get */, - length, pfLock->fl_start, + length, pfLock, posix_lock_type, wait_flag); FreeXid(xid); return rc; @@ -704,7 +704,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock) return -EOPNOTSUPP; } rc = CIFSSMBPosixLock(xid, pTcon, netfid, 0 /* set */, - length, pfLock->fl_start, + length, pfLock, posix_lock_type, wait_flag); } else rc = CIFSSMBLock(xid, pTcon, netfid, length, pfLock->fl_start, |