------------
DFS support added (Microsoft Distributed File System client support needed
for referrals which enable a hierarchical name space among servers).
+Disable temporary caching of mode bits to servers which do not support
+storing of mode (e.g. Windows servers, when client mounts without cifsacl
+mount option) and add new "dynperm" mount option to enable temporary caching
+of mode (enable old behavior). Fix hang on mount caused when server crashes
+tcp session during negotiate protocol.
Version 1.52
------------
{
struct inode *inode;
struct cifs_sb_info *cifs_sb;
-#ifdef CONFIG_CIFS_DFS_UPCALL
- int len;
-#endif
int rc = 0;
/* BB should we make this contingent on mount parm? */
* complex operation (mount), and in case of fail
* just exit instead of doing mount and attempting
* undo it if this copy fails?*/
- len = strlen(data);
- cifs_sb->mountdata = kzalloc(len + 1, GFP_KERNEL);
- if (cifs_sb->mountdata == NULL) {
- kfree(sb->s_fs_info);
- sb->s_fs_info = NULL;
- return -ENOMEM;
+ if (data) {
+ int len = strlen(data);
+ cifs_sb->mountdata = kzalloc(len + 1, GFP_KERNEL);
+ if (cifs_sb->mountdata == NULL) {
+ kfree(sb->s_fs_info);
+ sb->s_fs_info = NULL;
+ return -ENOMEM;
+ }
+ strncpy(cifs_sb->mountdata, data, len + 1);
+ cifs_sb->mountdata[len] = '\0';
}
- strncpy(cifs_sb->mountdata, data, len + 1);
- cifs_sb->mountdata[len] = '\0';
#endif
rc = cifs_mount(sb, cifs_sb, data, devname);
bool messageMode:1; /* for pipes: message vs byte mode */
atomic_t wrtPending; /* handle in use - defer close */
struct semaphore fh_sem; /* prevents reopen race after dead ses*/
- char *search_resume_name; /* BB removeme BB */
struct cifs_search_info srch_inf;
};
GLOBAL_EXTERN atomic_t tcpSesReconnectCount;
GLOBAL_EXTERN atomic_t tconInfoReconnectCount;
-/* Various Debug counters to remove someday (BB) */
+/* Various Debug counters */
GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */
#ifdef CONFIG_CIFS_STATS2
GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */
#define TRANS2_GET_DFS_REFERRAL 0x10
#define TRANS2_REPORT_DFS_INCOSISTENCY 0x11
+/* SMB Transact (Named Pipe) subcommand codes */
+#define TRANS_SET_NMPIPE_STATE 0x0001
+#define TRANS_RAW_READ_NMPIPE 0x0011
+#define TRANS_QUERY_NMPIPE_STATE 0x0021
+#define TRANS_QUERY_NMPIPE_INFO 0x0022
+#define TRANS_PEEK_NMPIPE 0x0023
+#define TRANS_TRANSACT_NMPIPE 0x0026
+#define TRANS_RAW_WRITE_NMPIPE 0x0031
+#define TRANS_READ_NMPIPE 0x0036
+#define TRANS_WRITE_NMPIPE 0x0037
+#define TRANS_WAIT_NMPIPE 0x0053
+#define TRANS_CALL_NMPIPE 0x0054
+
/* NT Transact subcommand codes */
#define NT_TRANSACT_CREATE 0x01
#define NT_TRANSACT_IOCTL 0x02
#define CREATE_COMPLETE_IF_OPLK 0x00000100 /* should be zero */
#define CREATE_NO_EA_KNOWLEDGE 0x00000200
#define CREATE_EIGHT_DOT_THREE 0x00000400 /* doc says this is obsolete
- open for recovery flag - should
- be zero */
+ "open for recovery" flag - should
+ be zero in any case */
+#define CREATE_OPEN_FOR_RECOVERY 0x00000400
#define CREATE_RANDOM_ACCESS 0x00000800
#define CREATE_DELETE_ON_CLOSE 0x00001000
#define CREATE_OPEN_BY_ID 0x00002000
-#define CREATE_OPEN_BACKUP_INTN 0x00004000
+#define CREATE_OPEN_BACKUP_INTENT 0x00004000
#define CREATE_NO_COMPRESSION 0x00008000
#define CREATE_RESERVE_OPFILTER 0x00100000 /* should be zero */
#define OPEN_REPARSE_POINT 0x00200000
#define SMB_CSC_CACHE_AUTO_REINT 0x0004
#define SMB_CSC_CACHE_VDO 0x0008
#define SMB_CSC_NO_CACHING 0x000C
-
#define SMB_UNIQUE_FILE_NAME 0x0010
#define SMB_EXTENDED_SIGNATURES 0x0020
#define ICOUNT_MASK 0x00FF
#define PIPE_READ_MODE 0x0100
#define NAMED_PIPE_TYPE 0x0400
-#define PIPE_END_POINT 0x0800
+#define PIPE_END_POINT 0x4000
#define BLOCKING_NAMED_PIPE 0x8000
typedef struct smb_com_open_req { /* also handles create */
{
int rc = 0;
LOCK_REQ *pSMB = NULL;
- LOCK_RSP *pSMBr = NULL;
+/* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */
int bytes_returned;
int timeout = 0;
__u16 count;
if (rc)
return rc;
- pSMBr = (LOCK_RSP *)pSMB; /* BB removeme BB */
-
if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) {
timeout = CIFS_ASYNC_OP; /* no response expected */
pSMB->Timeout = 0;
if (waitFlag) {
rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned);
+ (struct smb_hdr *) pSMB, &bytes_returned);
cifs_small_buf_release(pSMB);
} else {
rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *)pSMB,
spin_lock(&GlobalMid_Lock);
server->tcpStatus = CifsExiting;
spin_unlock(&GlobalMid_Lock);
+ wake_up_all(&server->response_q);
/* don't exit until kthread_stop is called */
set_current_state(TASK_UNINTERRUPTIBLE);
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
}
+ if ((volume_info.cifs_acl) && (volume_info.dynperm))
+ cERROR(1, ("mount option dynperm ignored if cifsacl "
+ "mount option supported"));
+
tcon =
find_unc(sin_server.sin_addr.s_addr, volume_info.UNC,
volume_info.username);
buf, inode->i_sb, xid,
&fileHandle);
if (newinode) {
- newinode->i_mode = mode;
+ if (cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_DYNPERM)
+ newinode->i_mode = mode;
if ((oplock & CIFS_CREATE_ACTION) &&
(cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_SET_UID)) {
msleep(timeout);
timeout *= 8;
}
- kfree(pSMBFile->search_resume_name);
kfree(file->private_data);
file->private_data = NULL;
} else
else
cifs_buf_release(ptmp);
}
- ptmp = pCFileStruct->search_resume_name;
- if (ptmp) {
- cFYI(1, ("closedir free resume name"));
- pCFileStruct->search_resume_name = NULL;
- kfree(ptmp);
- }
kfree(file->private_data);
file->private_data = NULL;
}
char *buf = NULL;
bool adjustTZ = false;
bool is_dfs_referral = false;
+ umode_t default_mode;
pTcon = cifs_sb->tcon;
cFYI(1, ("Getting info on %s", full_path));
inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj;
}
- /* set default mode. will override for dirs below */
- if (atomic_read(&cifsInfo->inUse) == 0)
- /* new inode, can safely set these fields */
- inode->i_mode = cifs_sb->mnt_file_mode;
- else /* since we set the inode type below we need to mask off
- to avoid strange results if type changes and both
- get orred in */
- inode->i_mode &= ~S_IFMT;
-/* if (attr & ATTR_REPARSE) */
- /* We no longer handle these as symlinks because we could not
- follow them due to the absolute path with drive letter */
- if (attr & ATTR_DIRECTORY) {
- /* override default perms since we do not do byte range locking
- on dirs */
- inode->i_mode = cifs_sb->mnt_dir_mode;
- inode->i_mode |= S_IFDIR;
- } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
- (cifsInfo->cifsAttrs & ATTR_SYSTEM) &&
- /* No need to le64 convert size of zero */
- (pfindData->EndOfFile == 0)) {
- inode->i_mode = cifs_sb->mnt_file_mode;
- inode->i_mode |= S_IFIFO;
-/* BB Finish for SFU style symlinks and devices */
- } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
- (cifsInfo->cifsAttrs & ATTR_SYSTEM)) {
- if (decode_sfu_inode(inode, le64_to_cpu(pfindData->EndOfFile),
- full_path, cifs_sb, xid))
- cFYI(1, ("Unrecognized sfu inode type"));
-
- cFYI(1, ("sfu mode 0%o", inode->i_mode));
+ /* get default inode mode */
+ if (attr & ATTR_DIRECTORY)
+ default_mode = cifs_sb->mnt_dir_mode;
+ else
+ default_mode = cifs_sb->mnt_file_mode;
+
+ /* set permission bits */
+ if (atomic_read(&cifsInfo->inUse) == 0 ||
+ (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0)
+ inode->i_mode = default_mode;
+ else {
+ /* just reenable write bits if !ATTR_READONLY */
+ if ((inode->i_mode & S_IWUGO) == 0 &&
+ (attr & ATTR_READONLY) == 0)
+ inode->i_mode |= (S_IWUGO & default_mode);
+ inode->i_mode &= ~S_IFMT;
+ }
+ /* clear write bits if ATTR_READONLY is set */
+ if (attr & ATTR_READONLY)
+ inode->i_mode &= ~S_IWUGO;
+
+ /* set inode type */
+ if ((attr & ATTR_SYSTEM) &&
+ (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) {
+ /* no need to fix endianness on 0 */
+ if (pfindData->EndOfFile == 0)
+ inode->i_mode |= S_IFIFO;
+ else if (decode_sfu_inode(inode,
+ le64_to_cpu(pfindData->EndOfFile),
+ full_path, cifs_sb, xid))
+ cFYI(1, ("unknown SFU file type\n"));
} else {
- inode->i_mode |= S_IFREG;
- /* treat dos attribute of read-only as read-only mode eg 555 */
- if (cifsInfo->cifsAttrs & ATTR_READONLY)
- inode->i_mode &= ~(S_IWUGO);
- else if ((inode->i_mode & S_IWUGO) == 0)
- /* the ATTR_READONLY flag may have been */
- /* changed on server -- set any w bits */
- /* allowed by mnt_file_mode */
- inode->i_mode |= (S_IWUGO & cifs_sb->mnt_file_mode);
- /* BB add code to validate if device or weird share or device type? */
+ if (attr & ATTR_DIRECTORY)
+ inode->i_mode |= S_IFDIR;
+ else
+ inode->i_mode |= S_IFREG;
}
spin_lock(&inode->i_lock);
CIFS_MOUNT_MAP_SPECIAL_CHR);
}
if (direntry->d_inode) {
- direntry->d_inode->i_mode = mode;
- direntry->d_inode->i_mode |= S_IFDIR;
+ if (cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_DYNPERM)
+ direntry->d_inode->i_mode =
+ (mode | S_IFDIR);
+
if (cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_SET_UID) {
direntry->d_inode->i_uid =
} else
goto cifs_setattr_exit;
}
- if (attrs->ia_valid & ATTR_UID) {
- cFYI(1, ("UID changed to %d", attrs->ia_uid));
- uid = attrs->ia_uid;
- }
- if (attrs->ia_valid & ATTR_GID) {
- cFYI(1, ("GID changed to %d", attrs->ia_gid));
- gid = attrs->ia_gid;
+
+ /*
+ * Without unix extensions we can't send ownership changes to the
+ * server, so silently ignore them. This is consistent with how
+ * local DOS/Windows filesystems behave (VFAT, NTFS, etc). With
+ * CIFSACL support + proper Windows to Unix idmapping, we may be
+ * able to support this in the future.
+ */
+ if (!pTcon->unix_ext &&
+ !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)) {
+ attrs->ia_valid &= ~(ATTR_UID | ATTR_GID);
+ } else {
+ if (attrs->ia_valid & ATTR_UID) {
+ cFYI(1, ("UID changed to %d", attrs->ia_uid));
+ uid = attrs->ia_uid;
+ }
+ if (attrs->ia_valid & ATTR_GID) {
+ cFYI(1, ("GID changed to %d", attrs->ia_gid));
+ gid = attrs->ia_gid;
+ }
}
time_buf.Attributes = 0;
attrs->ia_valid &= ~ATTR_MODE;
if (attrs->ia_valid & ATTR_MODE) {
- cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode));
+ cFYI(1, ("Mode changed to 0%o", attrs->ia_mode));
mode = attrs->ia_mode;
}
#ifdef CONFIG_CIFS_EXPERIMENTAL
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
rc = mode_to_acl(inode, full_path, mode);
- else if ((mode & S_IWUGO) == 0) {
-#else
- if ((mode & S_IWUGO) == 0) {
+ else
#endif
- /* not writeable */
- if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
- set_dosattr = true;
- time_buf.Attributes =
- cpu_to_le32(cifsInode->cifsAttrs |
- ATTR_READONLY);
- }
- } else if (cifsInode->cifsAttrs & ATTR_READONLY) {
+ if (((mode & S_IWUGO) == 0) &&
+ (cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
+ set_dosattr = true;
+ time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs |
+ ATTR_READONLY);
+ /* fix up mode if we're not using dynperm */
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0)
+ attrs->ia_mode = inode->i_mode & ~S_IWUGO;
+ } else if ((mode & S_IWUGO) &&
+ (cifsInode->cifsAttrs & ATTR_READONLY)) {
/* If file is readonly on server, we would
not be able to write to it - so if any write
bit is enabled for user or group or other we
/* Windows ignores set to zero */
if (time_buf.Attributes == 0)
time_buf.Attributes |= cpu_to_le32(ATTR_NORMAL);
+
+ /* reset local inode permissions to normal */
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
+ attrs->ia_mode &= ~(S_IALLUGO);
+ if (S_ISDIR(inode->i_mode))
+ attrs->ia_mode |=
+ cifs_sb->mnt_dir_mode;
+ else
+ attrs->ia_mode |=
+ cifs_sb->mnt_file_mode;
+ }
+ } else if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
+ /* ignore mode change - ATTR_READONLY hasn't changed */
+ attrs->ia_valid &= ~ATTR_MODE;
}
}
pnotify = (struct file_notify_information *)
((char *)&pSMBr->hdr.Protocol + data_offset);
cFYI(1, ("dnotify on %s Action: 0x%x",
- pnotify->FileName,
- pnotify->Action)); /* BB removeme BB */
+ pnotify->FileName, pnotify->Action));
/* cifs_dump_mem("Rcvd notify Data: ",buf,
sizeof(struct smb_hdr)+60); */
return true;
__u32 attr;
__u64 allocation_size;
__u64 end_of_file;
+ umode_t default_mode;
/* save mtime and size */
local_mtime = tmp_inode->i_mtime;
if (atomic_read(&cifsInfo->inUse) == 0) {
tmp_inode->i_uid = cifs_sb->mnt_uid;
tmp_inode->i_gid = cifs_sb->mnt_gid;
- /* set default mode. will override for dirs below */
- tmp_inode->i_mode = cifs_sb->mnt_file_mode;
- } else {
- /* mask off the type bits since it gets set
- below and we do not want to get two type
- bits set */
+ }
+
+ if (attr & ATTR_DIRECTORY)
+ default_mode = cifs_sb->mnt_dir_mode;
+ else
+ default_mode = cifs_sb->mnt_file_mode;
+
+ /* set initial permissions */
+ if ((atomic_read(&cifsInfo->inUse) == 0) ||
+ (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0)
+ tmp_inode->i_mode = default_mode;
+ else {
+ /* just reenable write bits if !ATTR_READONLY */
+ if ((tmp_inode->i_mode & S_IWUGO) == 0 &&
+ (attr & ATTR_READONLY) == 0)
+ tmp_inode->i_mode |= (S_IWUGO & default_mode);
+
tmp_inode->i_mode &= ~S_IFMT;
}
- if (attr & ATTR_DIRECTORY) {
- *pobject_type = DT_DIR;
- /* override default perms since we do not lock dirs */
- if (atomic_read(&cifsInfo->inUse) == 0)
- tmp_inode->i_mode = cifs_sb->mnt_dir_mode;
- tmp_inode->i_mode |= S_IFDIR;
- } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
- (attr & ATTR_SYSTEM)) {
+ /* clear write bits if ATTR_READONLY is set */
+ if (attr & ATTR_READONLY)
+ tmp_inode->i_mode &= ~S_IWUGO;
+
+ /* set inode type */
+ if ((attr & ATTR_SYSTEM) &&
+ (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) {
if (end_of_file == 0) {
- *pobject_type = DT_FIFO;
tmp_inode->i_mode |= S_IFIFO;
+ *pobject_type = DT_FIFO;
} else {
- /* rather than get the type here, we mark the
- inode as needing revalidate and get the real type
- (blk vs chr vs. symlink) later ie in lookup */
- *pobject_type = DT_REG;
+ /*
+ * trying to get the type can be slow, so just call
+ * this a regular file for now, and mark for reval
+ */
tmp_inode->i_mode |= S_IFREG;
+ *pobject_type = DT_REG;
cifsInfo->time = 0;
}
-/* we no longer mark these because we could not follow them */
-/* } else if (attr & ATTR_REPARSE) {
- *pobject_type = DT_LNK;
- tmp_inode->i_mode |= S_IFLNK; */
} else {
- *pobject_type = DT_REG;
- tmp_inode->i_mode |= S_IFREG;
- if (attr & ATTR_READONLY)
- tmp_inode->i_mode &= ~(S_IWUGO);
- else if ((tmp_inode->i_mode & S_IWUGO) == 0)
- /* the ATTR_READONLY flag may have been changed on */
- /* server -- set any w bits allowed by mnt_file_mode */
- tmp_inode->i_mode |= (S_IWUGO & cifs_sb->mnt_file_mode);
- } /* could add code here - to validate if device or weird share type? */
+ if (attr & ATTR_DIRECTORY) {
+ tmp_inode->i_mode |= S_IFDIR;
+ *pobject_type = DT_DIR;
+ } else {
+ tmp_inode->i_mode |= S_IFREG;
+ *pobject_type = DT_REG;
+ }
+ }
/* can not fill in nlink here as in qpathinfo version and Unx search */
if (atomic_read(&cifsInfo->inUse) == 0)
cifsFile->invalidHandle = true;
CIFSFindClose(xid, pTcon, cifsFile->netfid);
}
- kfree(cifsFile->search_resume_name);
- cifsFile->search_resume_name = NULL;
if (cifsFile->srch_inf.ntwrk_buf_start) {
cFYI(1, ("freeing SMB ff cache buf on search rewind"));
if (cifsFile->srch_inf.smallBuf)
} /* else {
cifsFile->invalidHandle = true;
CIFSFindClose(xid, pTcon, cifsFile->netfid);
- }
- kfree(cifsFile->search_resume_name);
- cifsFile->search_resume_name = NULL; */
+ } */
rc = find_cifs_entry(xid, pTcon, file,
¤t_entry, &num_to_fill);
git://bbs.cooldavid.org / net-next-2.6.git / commitdiff