@@ -85,8 +85,6 @@ extern const struct dentry_operations cifs_ci_dentry_ops;
extern void *cifs_follow_link(struct dentry *direntry, struct nameidata *nd);
extern void cifs_put_link(struct dentry *direntry,
struct nameidata *nd, void *);
-extern int cifs_readlink(struct dentry *direntry, char __user *buffer,
- int buflen);
extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
const char *symname);
extern int cifs_removexattr(struct dentry *, const char *);
@@ -1432,17 +1432,6 @@ struct file_notify_information {
__u8 FileName[0];
} __attribute__((packed));
-struct reparse_data {
- __u32 ReparseTag;
- __u16 ReparseDataLength;
- __u16 Reserved;
- __u16 AltNameOffset;
- __u16 AltNameLen;
- __u16 TargetNameOffset;
- __u16 TargetNameLen;
- char LinkNamesBuf[1];
-} __attribute__((packed));
-
struct cifs_quota_data {
__u32 rsrvd1; /* 0 */
__u32 sid_size;
@@ -2570,115 +2570,7 @@ validate_ntransact(char *buf, char **ppparm, char **ppdata,
}
#endif /* CIFS_EXPERIMENTAL */
-int
-CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
- const unsigned char *searchName,
- char *symlinkinfo, const int buflen, __u16 fid,
- const struct nls_table *nls_codepage)
-{
- int rc = 0;
- int bytes_returned;
- int name_len;
- struct smb_com_transaction_ioctl_req *pSMB;
- struct smb_com_transaction_ioctl_rsp *pSMBr;
-
- cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName));
- rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- pSMB->TotalParameterCount = 0 ;
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le32(2);
- /* BB find exact data count max from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf -
- MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
- pSMB->MaxSetupCount = 4;
- pSMB->Reserved = 0;
- pSMB->ParameterOffset = 0;
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 4;
- pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT);
- pSMB->IsFsctl = 1; /* FSCTL */
- pSMB->IsRootFlag = 0;
- pSMB->Fid = fid; /* file handle always le */
- pSMB->ByteCount = 0;
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc));
- } else { /* decode response */
- __u32 data_offset = le32_to_cpu(pSMBr->DataOffset);
- __u32 data_count = le32_to_cpu(pSMBr->DataCount);
- if ((pSMBr->ByteCount < 2) || (data_offset > 512))
- /* BB also check enough total bytes returned */
- rc = -EIO; /* bad smb */
- else {
- if (data_count && (data_count < 2048)) {
- char *end_of_smb = 2 /* sizeof byte count */ +
- pSMBr->ByteCount +
- (char *)&pSMBr->ByteCount;
-
- struct reparse_data *reparse_buf =
- (struct reparse_data *)
- ((char *)&pSMBr->hdr.Protocol
- + data_offset);
- if ((char *)reparse_buf >= end_of_smb) {
- rc = -EIO;
- goto qreparse_out;
- }
- if ((reparse_buf->LinkNamesBuf +
- reparse_buf->TargetNameOffset +
- reparse_buf->TargetNameLen) >
- end_of_smb) {
- cFYI(1, ("reparse buf beyond SMB"));
- rc = -EIO;
- goto qreparse_out;
- }
-
- if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len = UniStrnlen((wchar_t *)
- (reparse_buf->LinkNamesBuf +
- reparse_buf->TargetNameOffset),
- min(buflen/2,
- reparse_buf->TargetNameLen / 2));
- cifs_strfromUCS_le(symlinkinfo,
- (__le16 *) (reparse_buf->LinkNamesBuf +
- reparse_buf->TargetNameOffset),
- name_len, nls_codepage);
- } else { /* ASCII names */
- strncpy(symlinkinfo,
- reparse_buf->LinkNamesBuf +
- reparse_buf->TargetNameOffset,
- min_t(const int, buflen,
- reparse_buf->TargetNameLen));
- }
- } else {
- rc = -EIO;
- cFYI(1, ("Invalid return data count on "
- "get reparse info ioctl"));
- }
- symlinkinfo[buflen] = 0; /* just in case so the caller
- does not go off the end of the buffer */
- cFYI(1, ("readlink result - %s", symlinkinfo));
- }
- }
-qreparse_out:
- cifs_buf_release(pSMB);
-
- /* Note: On -EAGAIN error only caller can retry on handle based calls
- since file handle passed in no longer valid */
-
- return rc;
-}
-
#ifdef CONFIG_CIFS_POSIX
-
/*Convert an Access Control Entry from wire format to local POSIX xattr format*/
static void cifs_convert_ace(posix_acl_xattr_entry *ace,
struct cifs_posix_ace *cifs_ace)
@@ -224,98 +224,6 @@ cifs_symlink(struct inode *inode, struct dentry *direntry, const char *symname)
return rc;
}
-int
-cifs_readlink(struct dentry *direntry, char __user *pBuffer, int buflen)
-{
- struct inode *inode = direntry->d_inode;
- int rc = -EACCES;
- int xid;
- int oplock = 0;
- struct cifs_sb_info *cifs_sb;
- struct cifsTconInfo *pTcon;
- char *full_path = NULL;
- char *tmpbuffer;
- int len;
- __u16 fid;
-
- xid = GetXid();
- cifs_sb = CIFS_SB(inode->i_sb);
- pTcon = cifs_sb->tcon;
-
-/* BB would it be safe against deadlock to grab this sem
- even though rename itself grabs the sem and calls lookup? */
-/* mutex_lock(&inode->i_sb->s_vfs_rename_mutex);*/
- full_path = build_path_from_dentry(direntry);
-/* mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);*/
-
- if (full_path == NULL) {
- FreeXid(xid);
- return -ENOMEM;
- }
-
- cFYI(1,
- ("Full path: %s inode = 0x%p pBuffer = 0x%p buflen = %d",
- full_path, inode, pBuffer, buflen));
- if (buflen > PATH_MAX)
- len = PATH_MAX;
- else
- len = buflen;
- tmpbuffer = kmalloc(len, GFP_KERNEL);
- if (tmpbuffer == NULL) {
- kfree(full_path);
- FreeXid(xid);
- return -ENOMEM;
- }
-
-/* BB add read reparse point symlink code and
- Unix extensions symlink code here BB */
-/* We could disable this based on pTcon->unix_ext flag instead ... but why? */
- if (cifs_sb->tcon->ses->capabilities & CAP_UNIX)
- rc = CIFSSMBUnixQuerySymLink(xid, pTcon, full_path,
- tmpbuffer,
- len - 1,
- cifs_sb->local_nls);
- else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
- cERROR(1, ("SFU style symlinks not implemented yet"));
- /* add open and read as in fs/cifs/inode.c */
- } else {
- 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) {
- rc = CIFSSMBQueryReparseLinkInfo(xid, pTcon, full_path,
- tmpbuffer,
- len - 1,
- fid,
- cifs_sb->local_nls);
- if (CIFSSMBClose(xid, pTcon, fid)) {
- cFYI(1, ("Error closing junction point "
- "(open for ioctl)"));
- }
- /* If it is a DFS junction earlier we would have gotten
- PATH_NOT_COVERED returned from server so we do
- not need to request the DFS info here */
- }
- }
- /* BB Anything else to do to handle recursive links? */
- /* BB Should we be using page ops here? */
-
- /* BB null terminate returned string in pBuffer? BB */
- if (rc == 0) {
- rc = vfs_readlink(direntry, pBuffer, len, tmpbuffer);
- cFYI(1,
- ("vfs_readlink called from cifs_readlink returned %d",
- rc));
- }
-
- kfree(tmpbuffer);
- kfree(full_path);
- FreeXid(xid);
- return rc;
-}
-
void cifs_put_link(struct dentry *direntry, struct nameidata *nd, void *cookie)
{
char *p = nd_get_link(nd);
CIFSSMBQueryReparseLinkInfo is only called by cifs_readlink, and cifs_readlink is never called by anything. A quick look at CIFSSMBQueryReparseLinkInfo shows that it has several problems with handling of endianness as well. Remove them. Signed-off-by: Jeff Layton <jlayton@redhat.com> --- fs/cifs/cifsfs.h | 2 - fs/cifs/cifspdu.h | 11 ----- fs/cifs/cifssmb.c | 108 ----------------------------------------------------- fs/cifs/link.c | 92 --------------------------------------------- 4 files changed, 0 insertions(+), 213 deletions(-)