* fs/cifs/readdir.c
*
* Directory search handling
- *
- * Copyright (C) International Business Machines Corp., 2004, 2005
+ *
+ * Copyright (C) International Business Machines Corp., 2004, 2008
* Author(s): Steve French (sfrench@us.ibm.com)
*
* This library is free software; you can redistribute it and/or modify
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/fs.h>
+#include <linux/pagemap.h>
#include <linux/stat.h>
-#include <linux/smp_lock.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_fs_sb.h"
#include "cifsfs.h"
-/* BB fixme - add debug wrappers around this function to disable it fixme BB */
-/* static void dump_cifs_file_struct(struct file *file, char *label)
+/*
+ * To be safe - for UCS to UTF-8 with strings loaded with the rare long
+ * characters alloc more to account for such multibyte target UTF-8
+ * characters.
+ */
+#define UNICODE_NAME_MAX ((4 * NAME_MAX) + 2)
+
+#ifdef CONFIG_CIFS_DEBUG2
+static void dump_cifs_file_struct(struct file *file, char *label)
{
- struct cifsFileInfo * cf;
+ struct cifsFileInfo *cf;
- if(file) {
+ if (file) {
cf = file->private_data;
- if(cf == NULL) {
- cFYI(1,("empty cifs private file data"));
+ if (cf == NULL) {
+ cFYI(1, ("empty cifs private file data"));
return;
}
- if(cf->invalidHandle) {
- cFYI(1,("invalid handle"));
- }
- if(cf->srch_inf.endOfSearch) {
- cFYI(1,("end of search"));
- }
- if(cf->srch_inf.emptyDir) {
- cFYI(1,("empty dir"));
- }
-
+ if (cf->invalidHandle)
+ cFYI(1, ("invalid handle"));
+ if (cf->srch_inf.endOfSearch)
+ cFYI(1, ("end of search"));
+ if (cf->srch_inf.emptyDir)
+ cFYI(1, ("empty dir"));
}
-} */
+}
+#else
+static inline void dump_cifs_file_struct(struct file *file, char *label)
+{
+}
+#endif /* DEBUG2 */
-/* Returns one if new inode created (which therefore needs to be hashed) */
+/* Returns 1 if new inode created, 2 if both dentry and inode were */
/* Might check in the future if inode number changed so we can rehash inode */
-static int construct_dentry(struct qstr *qstring, struct file *file,
- struct inode **ptmp_inode, struct dentry **pnew_dentry)
+static int
+construct_dentry(struct qstr *qstring, struct file *file,
+ struct inode **ptmp_inode, struct dentry **pnew_dentry,
+ __u64 *inum)
{
- struct dentry *tmp_dentry;
- struct cifs_sb_info *cifs_sb;
- struct cifsTconInfo *pTcon;
+ struct dentry *tmp_dentry = NULL;
+ struct super_block *sb = file->f_path.dentry->d_sb;
int rc = 0;
cFYI(1, ("For %s", qstring->name));
- cifs_sb = CIFS_SB(file->f_dentry->d_sb);
- pTcon = cifs_sb->tcon;
qstring->hash = full_name_hash(qstring->name, qstring->len);
- tmp_dentry = d_lookup(file->f_dentry, qstring);
+ tmp_dentry = d_lookup(file->f_path.dentry, qstring);
if (tmp_dentry) {
- cFYI(0, ("existing dentry with inode 0x%p", tmp_dentry->d_inode));
+ /* BB: overwrite old name? i.e. tmp_dentry->d_name and
+ * tmp_dentry->d_name.len??
+ */
+ cFYI(0, ("existing dentry with inode 0x%p",
+ tmp_dentry->d_inode));
*ptmp_inode = tmp_dentry->d_inode;
-/* BB overwrite old name? i.e. tmp_dentry->d_name and tmp_dentry->d_name.len??*/
- if(*ptmp_inode == NULL) {
- *ptmp_inode = new_inode(file->f_dentry->d_sb);
- if(*ptmp_inode == NULL)
+ if (*ptmp_inode == NULL) {
+ *ptmp_inode = cifs_new_inode(sb, inum);
+ if (*ptmp_inode == NULL)
return rc;
rc = 1;
- d_instantiate(tmp_dentry, *ptmp_inode);
}
} else {
- tmp_dentry = d_alloc(file->f_dentry, qstring);
- if(tmp_dentry == NULL) {
- cERROR(1,("Failed allocating dentry"));
+ tmp_dentry = d_alloc(file->f_path.dentry, qstring);
+ if (tmp_dentry == NULL) {
+ cERROR(1, ("Failed allocating dentry"));
*ptmp_inode = NULL;
return rc;
}
- *ptmp_inode = new_inode(file->f_dentry->d_sb);
- if (pTcon->nocase)
+ if (CIFS_SB(sb)->tcon->nocase)
tmp_dentry->d_op = &cifs_ci_dentry_ops;
else
tmp_dentry->d_op = &cifs_dentry_ops;
- if(*ptmp_inode == NULL)
+
+ *ptmp_inode = cifs_new_inode(sb, inum);
+ if (*ptmp_inode == NULL)
return rc;
- rc = 1;
- d_instantiate(tmp_dentry, *ptmp_inode);
- d_rehash(tmp_dentry);
+ rc = 2;
}
tmp_dentry->d_time = jiffies;
return rc;
}
-static void fill_in_inode(struct inode *tmp_inode,
- FILE_DIRECTORY_INFO *pfindData, int *pobject_type, int isNewInode)
+static void fill_in_inode(struct inode *tmp_inode, int new_buf_type,
+ char *buf, unsigned int *pobject_type, int isNewInode)
{
loff_t local_size;
struct timespec local_mtime;
struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(tmp_inode->i_sb);
- __u32 attr = le32_to_cpu(pfindData->ExtFileAttributes);
- __u64 allocation_size = le64_to_cpu(pfindData->AllocationSize);
- __u64 end_of_file = le64_to_cpu(pfindData->EndOfFile);
-
- cifsInfo->cifsAttrs = attr;
- cifsInfo->time = jiffies;
+ __u32 attr;
+ __u64 allocation_size;
+ __u64 end_of_file;
+ umode_t default_mode;
/* save mtime and size */
local_mtime = tmp_inode->i_mtime;
local_size = tmp_inode->i_size;
+ if (new_buf_type) {
+ FILE_DIRECTORY_INFO *pfindData = (FILE_DIRECTORY_INFO *)buf;
+
+ attr = le32_to_cpu(pfindData->ExtFileAttributes);
+ allocation_size = le64_to_cpu(pfindData->AllocationSize);
+ end_of_file = le64_to_cpu(pfindData->EndOfFile);
+ tmp_inode->i_atime =
+ cifs_NTtimeToUnix(pfindData->LastAccessTime);
+ tmp_inode->i_mtime =
+ cifs_NTtimeToUnix(pfindData->LastWriteTime);
+ tmp_inode->i_ctime =
+ cifs_NTtimeToUnix(pfindData->ChangeTime);
+ } else { /* legacy, OS2 and DOS style */
+ int offset = cifs_sb->tcon->ses->server->timeAdj;
+ FIND_FILE_STANDARD_INFO *pfindData =
+ (FIND_FILE_STANDARD_INFO *)buf;
+
+ tmp_inode->i_mtime = cnvrtDosUnixTm(pfindData->LastWriteDate,
+ pfindData->LastWriteTime,
+ offset);
+ tmp_inode->i_atime = cnvrtDosUnixTm(pfindData->LastAccessDate,
+ pfindData->LastAccessTime,
+ offset);
+ tmp_inode->i_ctime = cnvrtDosUnixTm(pfindData->LastWriteDate,
+ pfindData->LastWriteTime,
+ offset);
+ attr = le16_to_cpu(pfindData->Attributes);
+ allocation_size = le32_to_cpu(pfindData->AllocationSize);
+ end_of_file = le32_to_cpu(pfindData->DataSize);
+ }
+
/* Linux can not store file creation time unfortunately so ignore it */
- tmp_inode->i_atime =
- cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastAccessTime));
- tmp_inode->i_mtime =
- cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
- tmp_inode->i_ctime =
- cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
+
+ cifsInfo->cifsAttrs = attr;
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
+ /* get more accurate mode via ACL - so force inode refresh */
+ cifsInfo->time = 0;
+ } else
+#endif /* CONFIG_CIFS_EXPERIMENTAL */
+ cifsInfo->time = jiffies;
+
/* treat dos attribute of read-only as read-only mode bit e.g. 555? */
/* 2767 perms - indicate mandatory locking */
- /* BB fill in uid and gid here? with help from winbind?
+ /* BB fill in uid and gid here? with help from winbind?
or retrieve from NTFS stream extended attribute */
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 */
+ /*
+ * 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;
- tmp_inode->i_mode |= S_IFREG;
- cifsInfo->time = 0;
+ 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);
- } /* 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) {
+ if (atomic_read(&cifsInfo->inUse) == 0)
atomic_set(&cifsInfo->inUse, 1);
- }
- if (is_size_safe_to_change(cifsInfo)) {
- /* can not safely change the file size here if the
+ cifsInfo->server_eof = end_of_file;
+ spin_lock(&tmp_inode->i_lock);
+ if (is_size_safe_to_change(cifsInfo, end_of_file)) {
+ /* can not safely change the file size here if the
client is writing to it due to potential races */
i_size_write(tmp_inode, end_of_file);
/* for this calculation, even though the reported blocksize is larger */
tmp_inode->i_blocks = (512 - 1 + allocation_size) >> 9;
}
+ spin_unlock(&tmp_inode->i_lock);
if (allocation_size < end_of_file)
cFYI(1, ("May be sparse file, allocation less than file size"));
- cFYI(1, ("File Size %ld and blocks %llu and blocksize %ld",
+ cFYI(1, ("File Size %ld and blocks %llu",
(unsigned long)tmp_inode->i_size,
- (unsigned long long)tmp_inode->i_blocks,
- tmp_inode->i_blksize));
+ (unsigned long long)tmp_inode->i_blocks));
if (S_ISREG(tmp_inode->i_mode)) {
cFYI(1, ("File inode"));
tmp_inode->i_op = &cifs_file_inode_ops;
- if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
- if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
tmp_inode->i_fop = &cifs_file_direct_nobrl_ops;
else
tmp_inode->i_fop = &cifs_file_direct_ops;
-
- } else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
+ } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
tmp_inode->i_fop = &cifs_file_nobrl_ops;
else
tmp_inode->i_fop = &cifs_file_ops;
- tmp_inode->i_data.a_ops = &cifs_addr_ops;
- if((cifs_sb->tcon) && (cifs_sb->tcon->ses) &&
+ if ((cifs_sb->tcon) && (cifs_sb->tcon->ses) &&
(cifs_sb->tcon->ses->server->maxBuf <
- 4096 + MAX_CIFS_HDR_SIZE))
- tmp_inode->i_data.a_ops->readpages = NULL;
- if(isNewInode)
+ PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE))
+ tmp_inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
+ else
+ tmp_inode->i_data.a_ops = &cifs_addr_ops;
+
+ if (isNewInode)
return; /* No sense invalidating pages for new inode
since have not started caching readahead file
data yet */
}
static void unix_fill_in_inode(struct inode *tmp_inode,
- FILE_UNIX_INFO *pfindData, int *pobject_type, int isNewInode)
+ FILE_UNIX_INFO *pfindData, unsigned int *pobject_type, int isNewInode)
{
loff_t local_size;
struct timespec local_mtime;
local_size = tmp_inode->i_size;
tmp_inode->i_atime =
- cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastAccessTime));
+ cifs_NTtimeToUnix(pfindData->LastAccessTime);
tmp_inode->i_mtime =
- cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastModificationTime));
+ cifs_NTtimeToUnix(pfindData->LastModificationTime);
tmp_inode->i_ctime =
- cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastStatusChange));
+ cifs_NTtimeToUnix(pfindData->LastStatusChange);
tmp_inode->i_mode = le64_to_cpu(pfindData->Permissions);
/* since we set the inode type below we need to mask off type
- to avoid strange results if bits above were corrupt */
- tmp_inode->i_mode &= ~S_IFMT;
+ to avoid strange results if bits above were corrupt */
+ tmp_inode->i_mode &= ~S_IFMT;
if (type == UNIX_FILE) {
*pobject_type = DT_REG;
tmp_inode->i_mode |= S_IFREG;
/* safest to just call it a file */
*pobject_type = DT_REG;
tmp_inode->i_mode |= S_IFREG;
- cFYI(1,("unknown inode type %d",type));
+ cFYI(1, ("unknown inode type %d", type));
}
- tmp_inode->i_uid = le64_to_cpu(pfindData->Uid);
- tmp_inode->i_gid = le64_to_cpu(pfindData->Gid);
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
+ tmp_inode->i_uid = cifs_sb->mnt_uid;
+ else
+ tmp_inode->i_uid = le64_to_cpu(pfindData->Uid);
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
+ tmp_inode->i_gid = cifs_sb->mnt_gid;
+ else
+ tmp_inode->i_gid = le64_to_cpu(pfindData->Gid);
tmp_inode->i_nlink = le64_to_cpu(pfindData->Nlinks);
- if (is_size_safe_to_change(cifsInfo)) {
- /* can not safely change the file size here if the
+ cifsInfo->server_eof = end_of_file;
+ spin_lock(&tmp_inode->i_lock);
+ if (is_size_safe_to_change(cifsInfo, end_of_file)) {
+ /* can not safely change the file size here if the
client is writing to it due to potential races */
- i_size_write(tmp_inode,end_of_file);
+ i_size_write(tmp_inode, end_of_file);
/* 512 bytes (2**9) is the fake blocksize that must be used */
/* for this calculation, not the real blocksize */
tmp_inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
}
+ spin_unlock(&tmp_inode->i_lock);
if (S_ISREG(tmp_inode->i_mode)) {
cFYI(1, ("File inode"));
tmp_inode->i_op = &cifs_file_inode_ops;
- if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
- if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
tmp_inode->i_fop = &cifs_file_direct_nobrl_ops;
else
tmp_inode->i_fop = &cifs_file_direct_ops;
-
- } else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
+ } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
tmp_inode->i_fop = &cifs_file_nobrl_ops;
else
tmp_inode->i_fop = &cifs_file_ops;
- tmp_inode->i_data.a_ops = &cifs_addr_ops;
- if((cifs_sb->tcon) && (cifs_sb->tcon->ses) &&
- (cifs_sb->tcon->ses->server->maxBuf <
- 4096 + MAX_CIFS_HDR_SIZE))
- tmp_inode->i_data.a_ops->readpages = NULL;
+ if ((cifs_sb->tcon) && (cifs_sb->tcon->ses) &&
+ (cifs_sb->tcon->ses->server->maxBuf <
+ PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE))
+ tmp_inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
+ else
+ tmp_inode->i_data.a_ops = &cifs_addr_ops;
- if(isNewInode)
- return; /* No sense invalidating pages for new inode since we
- have not started caching readahead file data yet */
+ if (isNewInode)
+ return; /* No sense invalidating pages for new inode
+ since we have not started caching readahead
+ file data for it yet */
if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
(local_size == tmp_inode->i_size)) {
tmp_inode->i_op = &cifs_symlink_inode_ops;
/* tmp_inode->i_fop = *//* do not need to set to anything */
} else {
- cFYI(1, ("Special inode"));
+ cFYI(1, ("Special inode"));
init_special_inode(tmp_inode, tmp_inode->i_mode,
tmp_inode->i_rdev);
}
}
+/* BB eventually need to add the following helper function to
+ resolve NT_STATUS_STOPPED_ON_SYMLINK return code when
+ we try to do FindFirst on (NTFS) directory symlinks */
+/*
+int get_symlink_reparse_path(char *full_path, struct cifs_sb_info *cifs_sb,
+ int xid)
+{
+ __u16 fid;
+ int len;
+ int oplock = 0;
+ int rc;
+ struct cifsTconInfo *ptcon = cifs_sb->tcon;
+ char *tmpbuffer;
+
+ rc = CIFSSMBOpen(xid, ptcon, full_path, FILE_OPEN, GENERIC_READ,
+ OPEN_REPARSE_POINT, &fid, &oplock, NULL,
+ cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (!rc) {
+ tmpbuffer = kmalloc(maxpath);
+ rc = CIFSSMBQueryReparseLinkInfo(xid, ptcon, full_path,
+ tmpbuffer,
+ maxpath -1,
+ fid,
+ cifs_sb->local_nls);
+ if (CIFSSMBClose(xid, ptcon, fid)) {
+ cFYI(1, ("Error closing temporary reparsepoint open)"));
+ }
+ }
+}
+ */
+
static int initiate_cifs_search(const int xid, struct file *file)
{
int rc = 0;
- char * full_path;
- struct cifsFileInfo * cifsFile;
+ char *full_path;
+ struct cifsFileInfo *cifsFile;
struct cifs_sb_info *cifs_sb;
struct cifsTconInfo *pTcon;
- if(file->private_data == NULL) {
- file->private_data =
- kmalloc(sizeof(struct cifsFileInfo),GFP_KERNEL);
+ if (file->private_data == NULL) {
+ file->private_data =
+ kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
}
- if(file->private_data == NULL) {
+ if (file->private_data == NULL)
return -ENOMEM;
- } else {
- memset(file->private_data,0,sizeof(struct cifsFileInfo));
- }
cifsFile = file->private_data;
- cifsFile->invalidHandle = TRUE;
- cifsFile->srch_inf.endOfSearch = FALSE;
+ cifsFile->invalidHandle = true;
+ cifsFile->srch_inf.endOfSearch = false;
- if(file->f_dentry == NULL)
- return -ENOENT;
-
- cifs_sb = CIFS_SB(file->f_dentry->d_sb);
- if(cifs_sb == NULL)
+ cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
+ if (cifs_sb == NULL)
return -EINVAL;
pTcon = cifs_sb->tcon;
- if(pTcon == NULL)
+ if (pTcon == NULL)
return -EINVAL;
- mutex_lock(&file->f_dentry->d_sb->s_vfs_rename_mutex);
- full_path = build_path_from_dentry(file->f_dentry);
- mutex_unlock(&file->f_dentry->d_sb->s_vfs_rename_mutex);
+ full_path = build_path_from_dentry(file->f_path.dentry);
- if(full_path == NULL) {
+ if (full_path == NULL)
return -ENOMEM;
- }
cFYI(1, ("Full path: %s start at: %lld", full_path, file->f_pos));
ffirst_retry:
/* test for Unix extensions */
- if (pTcon->ses->capabilities & CAP_UNIX) {
- cifsFile->srch_inf.info_level = SMB_FIND_FILE_UNIX;
+ /* but now check for them on the share/mount not on the SMB session */
+/* if (pTcon->ses->capabilities & CAP_UNIX) { */
+ if (pTcon->unix_ext)
+ cifsFile->srch_inf.info_level = SMB_FIND_FILE_UNIX;
+ else if ((pTcon->ses->capabilities &
+ (CAP_NT_SMBS | CAP_NT_FIND)) == 0) {
+ cifsFile->srch_inf.info_level = SMB_FIND_FILE_INFO_STANDARD;
} else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
cifsFile->srch_inf.info_level = SMB_FIND_FILE_ID_FULL_DIR_INFO;
} else /* not srvinos - BB fixme add check for backlevel? */ {
cifsFile->srch_inf.info_level = SMB_FIND_FILE_DIRECTORY_INFO;
}
- rc = CIFSFindFirst(xid, pTcon,full_path,cifs_sb->local_nls,
+ rc = CIFSFindFirst(xid, pTcon, full_path, cifs_sb->local_nls,
&cifsFile->netfid, &cifsFile->srch_inf,
- cifs_sb->mnt_cifs_flags &
+ cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR, CIFS_DIR_SEP(cifs_sb));
- if(rc == 0)
- cifsFile->invalidHandle = FALSE;
- if((rc == -EOPNOTSUPP) &&
+ if (rc == 0)
+ cifsFile->invalidHandle = false;
+ /* BB add following call to handle readdir on new NTFS symlink errors
+ else if STATUS_STOPPED_ON_SYMLINK
+ call get_symlink_reparse_path and retry with new path */
+ else if ((rc == -EOPNOTSUPP) &&
(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)) {
cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_SERVER_INUM;
goto ffirst_retry;
static int cifs_unicode_bytelen(char *str)
{
int len;
- __le16 * ustr = (__le16 *)str;
+ __le16 *ustr = (__le16 *)str;
- for(len=0;len <= PATH_MAX;len++) {
- if(ustr[len] == 0)
+ for (len = 0; len <= PATH_MAX; len++) {
+ if (ustr[len] == 0)
return len << 1;
}
- cFYI(1,("Unicode string longer than PATH_MAX found"));
+ cFYI(1, ("Unicode string longer than PATH_MAX found"));
return len << 1;
}
-static char *nxt_dir_entry(char *old_entry, char *end_of_smb)
+static char *nxt_dir_entry(char *old_entry, char *end_of_smb, int level)
{
- char * new_entry;
- FILE_DIRECTORY_INFO * pDirInfo = (FILE_DIRECTORY_INFO *)old_entry;
+ char *new_entry;
+ FILE_DIRECTORY_INFO *pDirInfo = (FILE_DIRECTORY_INFO *)old_entry;
+
+ if (level == SMB_FIND_FILE_INFO_STANDARD) {
+ FIND_FILE_STANDARD_INFO *pfData;
+ pfData = (FIND_FILE_STANDARD_INFO *)pDirInfo;
- new_entry = old_entry + le32_to_cpu(pDirInfo->NextEntryOffset);
- cFYI(1,("new entry %p old entry %p",new_entry,old_entry));
+ new_entry = old_entry + sizeof(FIND_FILE_STANDARD_INFO) +
+ pfData->FileNameLength;
+ } else
+ new_entry = old_entry + le32_to_cpu(pDirInfo->NextEntryOffset);
+ cFYI(1, ("new entry %p old entry %p", new_entry, old_entry));
/* validate that new_entry is not past end of SMB */
- if(new_entry >= end_of_smb) {
+ if (new_entry >= end_of_smb) {
cERROR(1,
("search entry %p began after end of SMB %p old entry %p",
- new_entry, end_of_smb, old_entry));
+ new_entry, end_of_smb, old_entry));
return NULL;
- } else if (new_entry + sizeof(FILE_DIRECTORY_INFO) > end_of_smb) {
- cERROR(1,("search entry %p extends after end of SMB %p",
+ } else if (((level == SMB_FIND_FILE_INFO_STANDARD) &&
+ (new_entry + sizeof(FIND_FILE_STANDARD_INFO) > end_of_smb))
+ || ((level != SMB_FIND_FILE_INFO_STANDARD) &&
+ (new_entry + sizeof(FILE_DIRECTORY_INFO) > end_of_smb))) {
+ cERROR(1, ("search entry %p extends after end of SMB %p",
new_entry, end_of_smb));
return NULL;
- } else
+ } else
return new_entry;
}
static int cifs_entry_is_dot(char *current_entry, struct cifsFileInfo *cfile)
{
int rc = 0;
- char * filename = NULL;
- int len = 0;
+ char *filename = NULL;
+ int len = 0;
- if(cfile->srch_inf.info_level == 0x202) {
- FILE_UNIX_INFO * pFindData = (FILE_UNIX_INFO *)current_entry;
+ if (cfile->srch_inf.info_level == SMB_FIND_FILE_UNIX) {
+ FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry;
filename = &pFindData->FileName[0];
- if(cfile->srch_inf.unicode) {
+ if (cfile->srch_inf.unicode) {
len = cifs_unicode_bytelen(filename);
} else {
/* BB should we make this strnlen of PATH_MAX? */
len = strnlen(filename, 5);
}
- } else if(cfile->srch_inf.info_level == 0x101) {
- FILE_DIRECTORY_INFO * pFindData =
+ } else if (cfile->srch_inf.info_level == SMB_FIND_FILE_DIRECTORY_INFO) {
+ FILE_DIRECTORY_INFO *pFindData =
(FILE_DIRECTORY_INFO *)current_entry;
filename = &pFindData->FileName[0];
len = le32_to_cpu(pFindData->FileNameLength);
- } else if(cfile->srch_inf.info_level == 0x102) {
- FILE_FULL_DIRECTORY_INFO * pFindData =
+ } else if (cfile->srch_inf.info_level ==
+ SMB_FIND_FILE_FULL_DIRECTORY_INFO) {
+ FILE_FULL_DIRECTORY_INFO *pFindData =
(FILE_FULL_DIRECTORY_INFO *)current_entry;
filename = &pFindData->FileName[0];
len = le32_to_cpu(pFindData->FileNameLength);
- } else if(cfile->srch_inf.info_level == 0x105) {
- SEARCH_ID_FULL_DIR_INFO * pFindData =
+ } else if (cfile->srch_inf.info_level ==
+ SMB_FIND_FILE_ID_FULL_DIR_INFO) {
+ SEARCH_ID_FULL_DIR_INFO *pFindData =
(SEARCH_ID_FULL_DIR_INFO *)current_entry;
filename = &pFindData->FileName[0];
len = le32_to_cpu(pFindData->FileNameLength);
- } else if(cfile->srch_inf.info_level == 0x104) {
- FILE_BOTH_DIRECTORY_INFO * pFindData =
+ } else if (cfile->srch_inf.info_level ==
+ SMB_FIND_FILE_BOTH_DIRECTORY_INFO) {
+ FILE_BOTH_DIRECTORY_INFO *pFindData =
(FILE_BOTH_DIRECTORY_INFO *)current_entry;
filename = &pFindData->FileName[0];
len = le32_to_cpu(pFindData->FileNameLength);
+ } else if (cfile->srch_inf.info_level == SMB_FIND_FILE_INFO_STANDARD) {
+ FIND_FILE_STANDARD_INFO *pFindData =
+ (FIND_FILE_STANDARD_INFO *)current_entry;
+ filename = &pFindData->FileName[0];
+ len = pFindData->FileNameLength;
} else {
- cFYI(1,("Unknown findfirst level %d",cfile->srch_inf.info_level));
+ cFYI(1, ("Unknown findfirst level %d",
+ cfile->srch_inf.info_level));
}
- if(filename) {
- if(cfile->srch_inf.unicode) {
+ if (filename) {
+ if (cfile->srch_inf.unicode) {
__le16 *ufilename = (__le16 *)filename;
- if(len == 2) {
+ if (len == 2) {
/* check for . */
- if(ufilename[0] == UNICODE_DOT)
+ if (ufilename[0] == UNICODE_DOT)
rc = 1;
- } else if(len == 4) {
+ } else if (len == 4) {
/* check for .. */
- if((ufilename[0] == UNICODE_DOT)
- &&(ufilename[1] == UNICODE_DOT))
+ if ((ufilename[0] == UNICODE_DOT)
+ && (ufilename[1] == UNICODE_DOT))
rc = 2;
}
} else /* ASCII */ {
- if(len == 1) {
- if(filename[0] == '.')
+ if (len == 1) {
+ if (filename[0] == '.')
rc = 1;
- } else if(len == 2) {
- if((filename[0] == '.') && (filename[1] == '.'))
+ } else if (len == 2) {
+ if ((filename[0] == '.') && (filename[1] == '.'))
rc = 2;
}
}
/* Check if directory that we are searching has changed so we can decide
whether we can use the cached search results from the previous search */
-static int is_dir_changed(struct file * file)
+static int is_dir_changed(struct file *file)
{
- struct inode * inode;
- struct cifsInodeInfo *cifsInfo;
+ struct inode *inode = file->f_path.dentry->d_inode;
+ struct cifsInodeInfo *cifsInfo = CIFS_I(inode);
- if(file->f_dentry == NULL)
+ if (cifsInfo->time == 0)
+ return 1; /* directory was changed, perhaps due to unlink */
+ else
return 0;
- inode = file->f_dentry->d_inode;
+}
- if(inode == NULL)
- return 0;
+static int cifs_save_resume_key(const char *current_entry,
+ struct cifsFileInfo *cifsFile)
+{
+ int rc = 0;
+ unsigned int len = 0;
+ __u16 level;
+ char *filename;
- cifsInfo = CIFS_I(inode);
+ if ((cifsFile == NULL) || (current_entry == NULL))
+ return -EINVAL;
- if(cifsInfo->time == 0)
- return 1; /* directory was changed, perhaps due to unlink */
- else
- return 0;
+ level = cifsFile->srch_inf.info_level;
+
+ if (level == SMB_FIND_FILE_UNIX) {
+ FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry;
+ filename = &pFindData->FileName[0];
+ if (cifsFile->srch_inf.unicode) {
+ len = cifs_unicode_bytelen(filename);
+ } else {
+ /* BB should we make this strnlen of PATH_MAX? */
+ len = strnlen(filename, PATH_MAX);
+ }
+ cifsFile->srch_inf.resume_key = pFindData->ResumeKey;
+ } else if (level == SMB_FIND_FILE_DIRECTORY_INFO) {
+ FILE_DIRECTORY_INFO *pFindData =
+ (FILE_DIRECTORY_INFO *)current_entry;
+ filename = &pFindData->FileName[0];
+ len = le32_to_cpu(pFindData->FileNameLength);
+ cifsFile->srch_inf.resume_key = pFindData->FileIndex;
+ } else if (level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) {
+ FILE_FULL_DIRECTORY_INFO *pFindData =
+ (FILE_FULL_DIRECTORY_INFO *)current_entry;
+ filename = &pFindData->FileName[0];
+ len = le32_to_cpu(pFindData->FileNameLength);
+ cifsFile->srch_inf.resume_key = pFindData->FileIndex;
+ } else if (level == SMB_FIND_FILE_ID_FULL_DIR_INFO) {
+ SEARCH_ID_FULL_DIR_INFO *pFindData =
+ (SEARCH_ID_FULL_DIR_INFO *)current_entry;
+ filename = &pFindData->FileName[0];
+ len = le32_to_cpu(pFindData->FileNameLength);
+ cifsFile->srch_inf.resume_key = pFindData->FileIndex;
+ } else if (level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) {
+ FILE_BOTH_DIRECTORY_INFO *pFindData =
+ (FILE_BOTH_DIRECTORY_INFO *)current_entry;
+ filename = &pFindData->FileName[0];
+ len = le32_to_cpu(pFindData->FileNameLength);
+ cifsFile->srch_inf.resume_key = pFindData->FileIndex;
+ } else if (level == SMB_FIND_FILE_INFO_STANDARD) {
+ FIND_FILE_STANDARD_INFO *pFindData =
+ (FIND_FILE_STANDARD_INFO *)current_entry;
+ filename = &pFindData->FileName[0];
+ /* one byte length, no name conversion */
+ len = (unsigned int)pFindData->FileNameLength;
+ cifsFile->srch_inf.resume_key = pFindData->ResumeKey;
+ } else {
+ cFYI(1, ("Unknown findfirst level %d", level));
+ return -EINVAL;
+ }
+ cifsFile->srch_inf.resume_name_len = len;
+ cifsFile->srch_inf.presume_name = filename;
+ return rc;
}
/* find the corresponding entry in the search */
/* We start counting in the buffer with entry 2 and increment for every
entry (do not increment for . or .. entry) */
static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
- struct file *file, char **ppCurrentEntry, int *num_to_ret)
+ struct file *file, char **ppCurrentEntry, int *num_to_ret)
{
int rc = 0;
int pos_in_buf = 0;
loff_t first_entry_in_buffer;
loff_t index_to_find = file->f_pos;
- struct cifsFileInfo * cifsFile = file->private_data;
+ struct cifsFileInfo *cifsFile = file->private_data;
/* check if index in the buffer */
-
- if((cifsFile == NULL) || (ppCurrentEntry == NULL) ||
+
+ if ((cifsFile == NULL) || (ppCurrentEntry == NULL) ||
(num_to_ret == NULL))
return -ENOENT;
-
+
*ppCurrentEntry = NULL;
- first_entry_in_buffer =
- cifsFile->srch_inf.index_of_last_entry -
+ first_entry_in_buffer =
+ cifsFile->srch_inf.index_of_last_entry -
cifsFile->srch_inf.entries_in_buffer;
-/* dump_cifs_file_struct(file, "In fce ");*/
- if(((index_to_find < cifsFile->srch_inf.index_of_last_entry) &&
- is_dir_changed(file)) ||
+
+ /* if first entry in buf is zero then is first buffer
+ in search response data which means it is likely . and ..
+ will be in this buffer, although some servers do not return
+ . and .. for the root of a drive and for those we need
+ to start two entries earlier */
+
+ dump_cifs_file_struct(file, "In fce ");
+ if (((index_to_find < cifsFile->srch_inf.index_of_last_entry) &&
+ is_dir_changed(file)) ||
(index_to_find < first_entry_in_buffer)) {
/* close and restart search */
- cFYI(1,("search backing up - close and restart search"));
- 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)
+ cFYI(1, ("search backing up - close and restart search"));
+ write_lock(&GlobalSMBSeslock);
+ if (!cifsFile->srch_inf.endOfSearch &&
+ !cifsFile->invalidHandle) {
+ cifsFile->invalidHandle = true;
+ write_unlock(&GlobalSMBSeslock);
+ CIFSFindClose(xid, pTcon, cifsFile->netfid);
+ } else
+ write_unlock(&GlobalSMBSeslock);
+ if (cifsFile->srch_inf.ntwrk_buf_start) {
+ cFYI(1, ("freeing SMB ff cache buf on search rewind"));
+ if (cifsFile->srch_inf.smallBuf)
cifs_small_buf_release(cifsFile->srch_inf.
ntwrk_buf_start);
else
cifs_buf_release(cifsFile->srch_inf.
ntwrk_buf_start);
+ cifsFile->srch_inf.ntwrk_buf_start = NULL;
}
- rc = initiate_cifs_search(xid,file);
- if(rc) {
- cFYI(1,("error %d reinitiating a search on rewind",rc));
+ rc = initiate_cifs_search(xid, file);
+ if (rc) {
+ cFYI(1, ("error %d reinitiating a search on rewind",
+ rc));
return rc;
}
+ cifs_save_resume_key(cifsFile->srch_inf.last_entry, cifsFile);
}
- while((index_to_find >= cifsFile->srch_inf.index_of_last_entry) &&
- (rc == 0) && (cifsFile->srch_inf.endOfSearch == FALSE)){
- cFYI(1,("calling findnext2"));
- rc = CIFSFindNext(xid,pTcon,cifsFile->netfid,
+ while ((index_to_find >= cifsFile->srch_inf.index_of_last_entry) &&
+ (rc == 0) && !cifsFile->srch_inf.endOfSearch) {
+ cFYI(1, ("calling findnext2"));
+ rc = CIFSFindNext(xid, pTcon, cifsFile->netfid,
&cifsFile->srch_inf);
- if(rc)
+ cifs_save_resume_key(cifsFile->srch_inf.last_entry, cifsFile);
+ if (rc)
return -ENOENT;
}
- if(index_to_find < cifsFile->srch_inf.index_of_last_entry) {
+ if (index_to_find < cifsFile->srch_inf.index_of_last_entry) {
/* we found the buffer that contains the entry */
/* scan and find it */
int i;
- char * current_entry;
- char * end_of_smb = cifsFile->srch_inf.ntwrk_buf_start +
+ char *current_entry;
+ char *end_of_smb = cifsFile->srch_inf.ntwrk_buf_start +
smbCalcSize((struct smb_hdr *)
cifsFile->srch_inf.ntwrk_buf_start);
+
+ current_entry = cifsFile->srch_inf.srch_entries_start;
first_entry_in_buffer = cifsFile->srch_inf.index_of_last_entry
- cifsFile->srch_inf.entries_in_buffer;
pos_in_buf = index_to_find - first_entry_in_buffer;
- cFYI(1,("found entry - pos_in_buf %d",pos_in_buf));
- current_entry = cifsFile->srch_inf.srch_entries_start;
- for(i=0;(i<(pos_in_buf)) && (current_entry != NULL);i++) {
+ cFYI(1, ("found entry - pos_in_buf %d", pos_in_buf));
+
+ for (i = 0; (i < (pos_in_buf)) && (current_entry != NULL); i++) {
/* go entry by entry figuring out which is first */
- /* if( . or ..)
- skip */
- rc = cifs_entry_is_dot(current_entry,cifsFile);
- if(rc == 1) /* is . or .. so skip */ {
- cFYI(1,("Entry is .")); /* BB removeme BB */
- /* continue; */
- } else if (rc == 2 ) {
- cFYI(1,("Entry is ..")); /* BB removeme BB */
- /* continue; */
- }
- current_entry = nxt_dir_entry(current_entry,end_of_smb);
+ current_entry = nxt_dir_entry(current_entry, end_of_smb,
+ cifsFile->srch_inf.info_level);
}
- if((current_entry == NULL) && (i < pos_in_buf)) {
+ if ((current_entry == NULL) && (i < pos_in_buf)) {
/* BB fixme - check if we should flag this error */
- cERROR(1,("reached end of buf searching for pos in buf"
+ cERROR(1, ("reached end of buf searching for pos in buf"
" %d index to find %lld rc %d",
- pos_in_buf,index_to_find,rc));
+ pos_in_buf, index_to_find, rc));
}
rc = 0;
*ppCurrentEntry = current_entry;
} else {
- cFYI(1,("index not in buffer - could not findnext into it"));
+ cFYI(1, ("index not in buffer - could not findnext into it"));
return 0;
}
- if(pos_in_buf >= cifsFile->srch_inf.entries_in_buffer) {
- cFYI(1,("can not return entries pos_in_buf beyond last entry"));
+ if (pos_in_buf >= cifsFile->srch_inf.entries_in_buffer) {
+ cFYI(1, ("can not return entries pos_in_buf beyond last"));
*num_to_ret = 0;
} else
*num_to_ret = cifsFile->srch_inf.entries_in_buffer - pos_in_buf;
/* inode num, inode type and filename returned */
static int cifs_get_name_from_search_buf(struct qstr *pqst,
char *current_entry, __u16 level, unsigned int unicode,
- struct cifs_sb_info * cifs_sb, ino_t *pinum)
+ struct cifs_sb_info *cifs_sb, unsigned int max_len, __u64 *pinum)
{
int rc = 0;
unsigned int len = 0;
- char * filename;
- struct nls_table * nlt = cifs_sb->local_nls;
+ char *filename;
+ struct nls_table *nlt = cifs_sb->local_nls;
*pinum = 0;
- if(level == SMB_FIND_FILE_UNIX) {
- FILE_UNIX_INFO * pFindData = (FILE_UNIX_INFO *)current_entry;
+ if (level == SMB_FIND_FILE_UNIX) {
+ FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry;
filename = &pFindData->FileName[0];
- if(unicode) {
+ if (unicode) {
len = cifs_unicode_bytelen(filename);
} else {
/* BB should we make this strnlen of PATH_MAX? */
len = strnlen(filename, PATH_MAX);
}
- /* BB fixme - hash low and high 32 bits if not 64 bit arch BB fixme */
- if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
- *pinum = pFindData->UniqueId;
- } else if(level == SMB_FIND_FILE_DIRECTORY_INFO) {
- FILE_DIRECTORY_INFO * pFindData =
+ *pinum = le64_to_cpu(pFindData->UniqueId);
+ } else if (level == SMB_FIND_FILE_DIRECTORY_INFO) {
+ FILE_DIRECTORY_INFO *pFindData =
(FILE_DIRECTORY_INFO *)current_entry;
filename = &pFindData->FileName[0];
len = le32_to_cpu(pFindData->FileNameLength);
- } else if(level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) {
- FILE_FULL_DIRECTORY_INFO * pFindData =
+ } else if (level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) {
+ FILE_FULL_DIRECTORY_INFO *pFindData =
(FILE_FULL_DIRECTORY_INFO *)current_entry;
filename = &pFindData->FileName[0];
len = le32_to_cpu(pFindData->FileNameLength);
- } else if(level == SMB_FIND_FILE_ID_FULL_DIR_INFO) {
- SEARCH_ID_FULL_DIR_INFO * pFindData =
+ } else if (level == SMB_FIND_FILE_ID_FULL_DIR_INFO) {
+ SEARCH_ID_FULL_DIR_INFO *pFindData =
(SEARCH_ID_FULL_DIR_INFO *)current_entry;
filename = &pFindData->FileName[0];
len = le32_to_cpu(pFindData->FileNameLength);
- *pinum = pFindData->UniqueId;
- } else if(level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) {
- FILE_BOTH_DIRECTORY_INFO * pFindData =
+ *pinum = le64_to_cpu(pFindData->UniqueId);
+ } else if (level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) {
+ FILE_BOTH_DIRECTORY_INFO *pFindData =
(FILE_BOTH_DIRECTORY_INFO *)current_entry;
filename = &pFindData->FileName[0];
len = le32_to_cpu(pFindData->FileNameLength);
+ } else if (level == SMB_FIND_FILE_INFO_STANDARD) {
+ FIND_FILE_STANDARD_INFO *pFindData =
+ (FIND_FILE_STANDARD_INFO *)current_entry;
+ filename = &pFindData->FileName[0];
+ /* one byte length, no name conversion */
+ len = (unsigned int)pFindData->FileNameLength;
} else {
- cFYI(1,("Unknown findfirst level %d",level));
+ cFYI(1, ("Unknown findfirst level %d", level));
return -EINVAL;
}
- if(unicode) {
- /* BB fixme - test with long names */
- /* Note converted filename can be longer than in unicode */
- if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR)
- pqst->len = cifs_convertUCSpath((char *)pqst->name,
- (__le16 *)filename, len/2, nlt);
- else
- pqst->len = cifs_strfromUCS_le((char *)pqst->name,
- (__le16 *)filename,len/2,nlt);
+
+ if (len > max_len) {
+ cERROR(1, ("bad search response length %d past smb end", len));
+ return -EINVAL;
+ }
+
+ if (unicode) {
+ pqst->len = cifs_from_ucs2((char *) pqst->name,
+ (__le16 *) filename,
+ UNICODE_NAME_MAX,
+ min(len, max_len), nlt,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
} else {
pqst->name = filename;
pqst->len = len;
}
- pqst->hash = full_name_hash(pqst->name,pqst->len);
-/* cFYI(1,("filldir on %s",pqst->name)); */
+ pqst->hash = full_name_hash(pqst->name, pqst->len);
+/* cFYI(1, ("filldir on %s",pqst->name)); */
return rc;
}
-static int cifs_filldir(char *pfindEntry, struct file *file,
- filldir_t filldir, void *direntry, char *scratch_buf)
+static int cifs_filldir(char *pfindEntry, struct file *file, filldir_t filldir,
+ void *direntry, char *scratch_buf, unsigned int max_len)
{
int rc = 0;
struct qstr qstring;
- struct cifsFileInfo * pCifsF;
- unsigned obj_type;
- ino_t inum;
- struct cifs_sb_info * cifs_sb;
+ struct cifsFileInfo *pCifsF;
+ unsigned int obj_type;
+ __u64 inum;
+ struct cifs_sb_info *cifs_sb;
struct inode *tmp_inode;
struct dentry *tmp_dentry;
/* get filename and len into qstring */
/* get dentry */
/* decide whether to create and populate ionde */
- if((direntry == NULL) || (file == NULL))
+ if ((direntry == NULL) || (file == NULL))
return -EINVAL;
pCifsF = file->private_data;
-
- if((scratch_buf == NULL) || (pfindEntry == NULL) || (pCifsF == NULL))
- return -ENOENT;
- if(file->f_dentry == NULL)
+ if ((scratch_buf == NULL) || (pfindEntry == NULL) || (pCifsF == NULL))
return -ENOENT;
- cifs_sb = CIFS_SB(file->f_dentry->d_sb);
+ rc = cifs_entry_is_dot(pfindEntry, pCifsF);
+ /* skip . and .. since we added them first */
+ if (rc != 0)
+ return 0;
+
+ cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
qstring.name = scratch_buf;
- rc = cifs_get_name_from_search_buf(&qstring,pfindEntry,
+ rc = cifs_get_name_from_search_buf(&qstring, pfindEntry,
pCifsF->srch_inf.info_level,
- pCifsF->srch_inf.unicode,cifs_sb,
+ pCifsF->srch_inf.unicode, cifs_sb,
+ max_len,
&inum /* returned */);
- if(rc)
+ if (rc)
return rc;
- rc = construct_dentry(&qstring,file,&tmp_inode, &tmp_dentry);
- if((tmp_inode == NULL) || (tmp_dentry == NULL))
- return -ENOMEM;
+ /* only these two infolevels return valid inode numbers */
+ if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_UNIX ||
+ pCifsF->srch_inf.info_level == SMB_FIND_FILE_ID_FULL_DIR_INFO)
+ rc = construct_dentry(&qstring, file, &tmp_inode, &tmp_dentry,
+ &inum);
+ else
+ rc = construct_dentry(&qstring, file, &tmp_inode, &tmp_dentry,
+ NULL);
- if(rc) {
- /* inode created, we need to hash it with right inode number */
- if(inum != 0) {
- /* BB fixme - hash the 2 32 quantities bits together if necessary BB */
- tmp_inode->i_ino = inum;
- }
- insert_inode_hash(tmp_inode);
- }
+ if ((tmp_inode == NULL) || (tmp_dentry == NULL))
+ return -ENOMEM;
/* we pass in rc below, indicating whether it is a new inode,
so we can figure out whether to invalidate the inode cached
data if the file has changed */
- if(pCifsF->srch_inf.info_level == SMB_FIND_FILE_UNIX) {
+ if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_UNIX)
unix_fill_in_inode(tmp_inode,
- (FILE_UNIX_INFO *)pfindEntry,&obj_type, rc);
- } else {
- fill_in_inode(tmp_inode,
- (FILE_DIRECTORY_INFO *)pfindEntry,&obj_type, rc);
+ (FILE_UNIX_INFO *)pfindEntry,
+ &obj_type, rc);
+ else if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_INFO_STANDARD)
+ fill_in_inode(tmp_inode, 0 /* old level 1 buffer type */,
+ pfindEntry, &obj_type, rc);
+ else
+ fill_in_inode(tmp_inode, 1 /* NT */, pfindEntry, &obj_type, rc);
+
+ if (rc) /* new inode - needs to be tied to dentry */ {
+ d_instantiate(tmp_dentry, tmp_inode);
+ if (rc == 2)
+ d_rehash(tmp_dentry);
}
-
- rc = filldir(direntry,qstring.name,qstring.len,file->f_pos,
- tmp_inode->i_ino,obj_type);
- if(rc) {
- cFYI(1,("filldir rc = %d",rc));
+
+
+ rc = filldir(direntry, qstring.name, qstring.len, file->f_pos,
+ tmp_inode->i_ino, obj_type);
+ if (rc) {
+ cFYI(1, ("filldir rc = %d", rc));
+ /* we can not return filldir errors to the caller
+ since they are "normal" when the stat blocksize
+ is too small - we return remapped error instead */
+ rc = -EOVERFLOW;
}
dput(tmp_dentry);
return rc;
}
-static int cifs_save_resume_key(const char *current_entry,
- struct cifsFileInfo *cifsFile)
-{
- int rc = 0;
- unsigned int len = 0;
- __u16 level;
- char * filename;
-
- if((cifsFile == NULL) || (current_entry == NULL))
- return -EINVAL;
-
- level = cifsFile->srch_inf.info_level;
-
- if(level == SMB_FIND_FILE_UNIX) {
- FILE_UNIX_INFO * pFindData = (FILE_UNIX_INFO *)current_entry;
-
- filename = &pFindData->FileName[0];
- if(cifsFile->srch_inf.unicode) {
- len = cifs_unicode_bytelen(filename);
- } else {
- /* BB should we make this strnlen of PATH_MAX? */
- len = strnlen(filename, PATH_MAX);
- }
- cifsFile->srch_inf.resume_key = pFindData->ResumeKey;
- } else if(level == SMB_FIND_FILE_DIRECTORY_INFO) {
- FILE_DIRECTORY_INFO * pFindData =
- (FILE_DIRECTORY_INFO *)current_entry;
- filename = &pFindData->FileName[0];
- len = le32_to_cpu(pFindData->FileNameLength);
- cifsFile->srch_inf.resume_key = pFindData->FileIndex;
- } else if(level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) {
- FILE_FULL_DIRECTORY_INFO * pFindData =
- (FILE_FULL_DIRECTORY_INFO *)current_entry;
- filename = &pFindData->FileName[0];
- len = le32_to_cpu(pFindData->FileNameLength);
- cifsFile->srch_inf.resume_key = pFindData->FileIndex;
- } else if(level == SMB_FIND_FILE_ID_FULL_DIR_INFO) {
- SEARCH_ID_FULL_DIR_INFO * pFindData =
- (SEARCH_ID_FULL_DIR_INFO *)current_entry;
- filename = &pFindData->FileName[0];
- len = le32_to_cpu(pFindData->FileNameLength);
- cifsFile->srch_inf.resume_key = pFindData->FileIndex;
- } else if(level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) {
- FILE_BOTH_DIRECTORY_INFO * pFindData =
- (FILE_BOTH_DIRECTORY_INFO *)current_entry;
- filename = &pFindData->FileName[0];
- len = le32_to_cpu(pFindData->FileNameLength);
- cifsFile->srch_inf.resume_key = pFindData->FileIndex;
- } else {
- cFYI(1,("Unknown findfirst level %d",level));
- return -EINVAL;
- }
- cifsFile->srch_inf.resume_name_len = len;
- cifsFile->srch_inf.presume_name = filename;
- return rc;
-}
int cifs_readdir(struct file *file, void *direntry, filldir_t filldir)
{
int rc = 0;
- int xid,i;
+ int xid, i;
struct cifs_sb_info *cifs_sb;
struct cifsTconInfo *pTcon;
struct cifsFileInfo *cifsFile = NULL;
- char * current_entry;
+ char *current_entry;
int num_to_fill = 0;
- char * tmp_buf = NULL;
- char * end_of_smb;
+ char *tmp_buf = NULL;
+ char *end_of_smb;
+ unsigned int max_len;
xid = GetXid();
- if(file->f_dentry == NULL) {
- FreeXid(xid);
- return -EIO;
- }
-
- cifs_sb = CIFS_SB(file->f_dentry->d_sb);
+ cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
pTcon = cifs_sb->tcon;
- if(pTcon == NULL)
+ if (pTcon == NULL)
return -EINVAL;
switch ((int) file->f_pos) {
case 0:
- /*if (filldir(direntry, ".", 1, file->f_pos,
- file->f_dentry->d_inode->i_ino, DT_DIR) < 0) {
- cERROR(1, ("Filldir for current dir failed "));
+ if (filldir(direntry, ".", 1, file->f_pos,
+ file->f_path.dentry->d_inode->i_ino, DT_DIR) < 0) {
+ cERROR(1, ("Filldir for current dir failed"));
rc = -ENOMEM;
break;
}
- file->f_pos++; */
+ file->f_pos++;
case 1:
- /* if (filldir(direntry, "..", 2, file->f_pos,
- file->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) {
- cERROR(1, ("Filldir for parent dir failed "));
+ if (filldir(direntry, "..", 2, file->f_pos,
+ file->f_path.dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) {
+ cERROR(1, ("Filldir for parent dir failed"));
rc = -ENOMEM;
break;
}
- file->f_pos++; */
- case 2:
- /* 1) If search is active,
- is in current search buffer?
+ file->f_pos++;
+ default:
+ /* 1) If search is active,
+ is in current search buffer?
if it before then restart search
if after then keep searching till find it */
- if(file->private_data == NULL) {
- rc = initiate_cifs_search(xid,file);
- cFYI(1,("initiate cifs search rc %d",rc));
- if(rc) {
+ if (file->private_data == NULL) {
+ rc = initiate_cifs_search(xid, file);
+ cFYI(1, ("initiate cifs search rc %d", rc));
+ if (rc) {
FreeXid(xid);
return rc;
}
}
- default:
- if(file->private_data == NULL) {
+ if (file->private_data == NULL) {
rc = -EINVAL;
FreeXid(xid);
return rc;
}
cifsFile = file->private_data;
if (cifsFile->srch_inf.endOfSearch) {
- if(cifsFile->srch_inf.emptyDir) {
+ if (cifsFile->srch_inf.emptyDir) {
cFYI(1, ("End of search, empty dir"));
rc = 0;
break;
}
} /* else {
- cifsFile->invalidHandle = TRUE;
+ cifsFile->invalidHandle = true;
CIFSFindClose(xid, pTcon, cifsFile->netfid);
- }
- kfree(cifsFile->search_resume_name);
- cifsFile->search_resume_name = NULL; */
-
- /* BB account for . and .. in f_pos as special case */
+ } */
- rc = find_cifs_entry(xid,pTcon, file,
- ¤t_entry,&num_to_fill);
- if(rc) {
- cFYI(1,("fce error %d",rc));
+ rc = find_cifs_entry(xid, pTcon, file,
+ ¤t_entry, &num_to_fill);
+ if (rc) {
+ cFYI(1, ("fce error %d", rc));
goto rddir2_exit;
} else if (current_entry != NULL) {
- cFYI(1,("entry %lld found",file->f_pos));
+ cFYI(1, ("entry %lld found", file->f_pos));
} else {
- cFYI(1,("could not find entry"));
+ cFYI(1, ("could not find entry"));
goto rddir2_exit;
}
- cFYI(1,("loop through %d times filling dir for net buf %p",
- num_to_fill,cifsFile->srch_inf.ntwrk_buf_start));
- end_of_smb = cifsFile->srch_inf.ntwrk_buf_start +
- smbCalcSize((struct smb_hdr *)
- cifsFile->srch_inf.ntwrk_buf_start);
- /* To be safe - for UCS to UTF-8 with strings loaded
- with the rare long characters alloc more to account for
- such multibyte target UTF-8 characters. cifs_unicode.c,
- which actually does the conversion, has the same limit */
- tmp_buf = kmalloc((2 * NAME_MAX) + 4, GFP_KERNEL);
- for(i=0;(i<num_to_fill) && (rc == 0);i++) {
- if(current_entry == NULL) {
+ cFYI(1, ("loop through %d times filling dir for net buf %p",
+ num_to_fill, cifsFile->srch_inf.ntwrk_buf_start));
+ max_len = smbCalcSize((struct smb_hdr *)
+ cifsFile->srch_inf.ntwrk_buf_start);
+ end_of_smb = cifsFile->srch_inf.ntwrk_buf_start + max_len;
+
+ tmp_buf = kmalloc(UNICODE_NAME_MAX, GFP_KERNEL);
+ for (i = 0; (i < num_to_fill) && (rc == 0); i++) {
+ if (current_entry == NULL) {
/* evaluate whether this case is an error */
- cERROR(1,("past end of SMB num to fill %d i %d",
+ cERROR(1, ("past SMB end, num to fill %d i %d",
num_to_fill, i));
break;
}
+ /* if buggy server returns . and .. late do
+ we want to check for that here? */
+ rc = cifs_filldir(current_entry, file,
+ filldir, direntry, tmp_buf, max_len);
+ if (rc == -EOVERFLOW) {
+ rc = 0;
+ break;
+ }
- rc = cifs_filldir(current_entry, file,
- filldir, direntry,tmp_buf);
file->f_pos++;
- if(file->f_pos == cifsFile->srch_inf.index_of_last_entry) {
- cFYI(1,("last entry in buf at pos %lld %s",
- file->f_pos,tmp_buf)); /* BB removeme BB */
- cifs_save_resume_key(current_entry,cifsFile);
+ if (file->f_pos ==
+ cifsFile->srch_inf.index_of_last_entry) {
+ cFYI(1, ("last entry in buf at pos %lld %s",
+ file->f_pos, tmp_buf));
+ cifs_save_resume_key(current_entry, cifsFile);
break;
- } else
- current_entry = nxt_dir_entry(current_entry,
- end_of_smb);
+ } else
+ current_entry =
+ nxt_dir_entry(current_entry, end_of_smb,
+ cifsFile->srch_inf.info_level);
}
kfree(tmp_buf);
break;