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Commit ac67055e authored by Jeremy Allison's avatar Jeremy Allison Committed by Steve French
Browse files

[CIFS] POSIX extensions, SetFSInfo added 



Signed-off-by: Steve French@sfrench@us.ibm.com
Signed-off-by: default avatarJeremy Allison <(jra@samba.org)>
parent dfb7533b

fs/cifs/cifs_fs_sb.h

+1 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 
#define CIFS_MOUNT_DIRECT_IO    8 /* do not write nor read through page cache */

#define CIFS_MOUNT_NO_XATTR  0x10 /* if set - disable xattr support */

#define CIFS_MOUNT_MAP_SPECIAL_CHR 0x20 /* remap illegal chars in filenames */

#define CIFS_MOUNT_POSIX_PATHS 0x40 /* Negotiate posix pathnames if possible. */



struct cifs_sb_info {

	struct cifsTconInfo *tcon;	/* primary mount */

fs/cifs/cifsglob.h

+7 −0
Original line number Diff line number Diff line
@@ -309,6 +309,13 @@ CIFS_SB(struct super_block *sb) 
	return sb->s_fs_info;

}



static inline const char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb)

{

	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)

		return '/';

	else

		return '\\';

}



/* one of these for every pending CIFS request to the server */

struct mid_q_entry {

fs/cifs/cifspdu.h

+46 −0
Original line number Diff line number Diff line
@@ -59,6 +59,7 @@ 
#define TRANS2_FIND_FIRST             0x01

#define TRANS2_FIND_NEXT              0x02

#define TRANS2_QUERY_FS_INFORMATION   0x03

#define TRANS2_SET_FS_INFORMATION     0x04

#define TRANS2_QUERY_PATH_INFORMATION 0x05

#define TRANS2_SET_PATH_INFORMATION   0x06

#define TRANS2_QUERY_FILE_INFORMATION 0x07
@@ -1411,6 +1412,43 @@ typedef struct smb_com_transaction_qfsi_rsp { 
	__u8 Pad;		/* may be three bytes *//* followed by data area */

} TRANSACTION2_QFSI_RSP;





/* SETFSInfo Levels */

#define SMB_SET_CIFS_UNIX_INFO    0x200

typedef struct smb_com_transaction2_setfsi_req {

	struct smb_hdr hdr;	/* wct = 15 */

	__le16 TotalParameterCount;

	__le16 TotalDataCount;

	__le16 MaxParameterCount;

	__le16 MaxDataCount;

	__u8 MaxSetupCount;

	__u8 Reserved;

	__le16 Flags;

	__le32 Timeout;

	__u16 Reserved2;

	__le16 ParameterCount;	/* 4 */

	__le16 ParameterOffset;

	__le16 DataCount;	/* 12 */

	__le16 DataOffset;

	__u8 SetupCount;	/* one */

	__u8 Reserved3;

	__le16 SubCommand;	/* TRANS2_SET_FS_INFORMATION */

	__le16 ByteCount;

	__u8 Pad;

	__u16 FileNum;		/* Parameters start. */

	__le16 InformationLevel;/* Parameters end. */

	__le16 ClientUnixMajor; /* Data start. */

	__le16 ClientUnixMinor;

	__le64 ClientUnixCap;   /* Data end */

} TRANSACTION2_SETFSI_REQ;



typedef struct smb_com_transaction2_setfsi_rsp {

	struct smb_hdr hdr;	/* wct = 10 */

	struct trans2_resp t2;

	__u16 ByteCount;

} TRANSACTION2_SETFSI_RSP;





typedef struct smb_com_transaction2_get_dfs_refer_req {

	struct smb_hdr hdr;	/* wct = 15 */

	__le16 TotalParameterCount;
@@ -1551,12 +1589,20 @@ typedef struct { 
	__le16 MinorVersionNumber;

	__le64 Capability;

} FILE_SYSTEM_UNIX_INFO;	/* Unix extensions info, level 0x200 */



/* Version numbers for CIFS UNIX major and minor. */

#define CIFS_UNIX_MAJOR_VERSION 1

#define CIFS_UNIX_MINOR_VERSION 0



/* Linux/Unix extensions capability flags */

#define CIFS_UNIX_FCNTL_CAP             0x00000001 /* support for fcntl locks */

#define CIFS_UNIX_POSIX_ACL_CAP         0x00000002 /* support getfacl/setfacl */

#define CIFS_UNIX_XATTR_CAP             0x00000004 /* support new namespace   */

#define CIFS_UNIX_EXTATTR_CAP           0x00000008 /* support chattr/chflag   */

#define CIFS_UNIX_POSIX_PATHNAMES_CAP   0x00000010 /* Use POSIX pathnames on the wire. */



#define CIFS_POSIX_EXTENSIONS           0x00000010 /* support for new QFSInfo */



typedef struct {

	/* For undefined recommended transfer size return -1 in that field */

	__le32 OptimalTransferSize;  /* bsize on some os, iosize on other os */

fs/cifs/cifsproto.h

+5 −2
Original line number Diff line number Diff line
@@ -40,7 +40,7 @@ extern unsigned int _GetXid(void); 
extern void _FreeXid(unsigned int);

#define GetXid() (int)_GetXid(); cFYI(1,("CIFS VFS: in %s as Xid: %d with uid: %d",__FUNCTION__, xid,current->fsuid));

#define FreeXid(curr_xid) {_FreeXid(curr_xid); cFYI(1,("CIFS VFS: leaving %s (xid = %d) rc = %d",__FUNCTION__,curr_xid,(int)rc));}

extern char *build_path_from_dentry(struct dentry *);

extern char *build_path_from_dentry(struct dentry *, const struct cifs_sb_info *cifs_sb);

extern char *build_wildcard_path_from_dentry(struct dentry *direntry);

extern void renew_parental_timestamps(struct dentry *direntry);

extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *,
@@ -89,7 +89,7 @@ extern int CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, 


extern int CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,

            const char *searchName, const struct nls_table *nls_codepage,

            __u16 *searchHandle, struct cifs_search_info * psrch_inf, int map);

            __u16 *searchHandle, struct cifs_search_info * psrch_inf, int map, const char dirsep);



extern int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,

            __u16 searchHandle, struct cifs_search_info * psrch_inf);
@@ -125,6 +125,9 @@ extern int get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, 
			int remap);

extern int CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon,

			struct kstatfs *FSData);

extern int CIFSSMBSETFSUnixInfo(const int xid, struct cifsTconInfo *tcon,

			__u64 cap);



extern int CIFSSMBQFSAttributeInfo(const int xid,

			struct cifsTconInfo *tcon);

extern int CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon);

fs/cifs/cifssmb.c

+74 −3
Original line number Diff line number Diff line
@@ -2416,7 +2416,7 @@ CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, 
	      const char *searchName, 

	      const struct nls_table *nls_codepage,

	      __u16 *	pnetfid,

	      struct cifs_search_info * psrch_inf, int remap)

	      struct cifs_search_info * psrch_inf, int remap, const char dirsep)

{

/* level 257 SMB_ */

	TRANSACTION2_FFIRST_REQ *pSMB = NULL;
@@ -2443,7 +2443,7 @@ CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, 
		it got remapped to 0xF03A as if it were part of the

		directory name instead of a wildcard */

		name_len *= 2;

		pSMB->FileName[name_len] = '\\';

		pSMB->FileName[name_len] = dirsep;

		pSMB->FileName[name_len+1] = 0;

		pSMB->FileName[name_len+2] = '*';

		pSMB->FileName[name_len+3] = 0;
@@ -2457,7 +2457,7 @@ CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, 
		if(name_len > buffersize-header)

			free buffer exit; BB */

		strncpy(pSMB->FileName, searchName, name_len);

		pSMB->FileName[name_len] = '\\';

		pSMB->FileName[name_len] = dirsep;

		pSMB->FileName[name_len+1] = '*';

		pSMB->FileName[name_len+2] = 0;

		name_len += 3;
@@ -3265,6 +3265,77 @@ CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) 
	return rc;

}



int

CIFSSMBSETFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap)

{

/* level 0x200  SMB_SET_CIFS_UNIX_INFO */

	TRANSACTION2_SETFSI_REQ *pSMB = NULL;

	TRANSACTION2_SETFSI_RSP *pSMBr = NULL;

	int rc = 0;

	int bytes_returned = 0;

	__u16 params, param_offset, offset, byte_count;



	cFYI(1, ("In SETFSUnixInfo"));

SETFSUnixRetry:

	rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,

		      (void **) &pSMBr);

	if (rc)

		return rc;



	params = 4;	/* 2 bytes zero followed by info level. */

	pSMB->MaxSetupCount = 0;

	pSMB->Reserved = 0;

	pSMB->Flags = 0;

	pSMB->Timeout = 0;

	pSMB->Reserved2 = 0;

	param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) - 4;

	offset = param_offset + params;



	pSMB->MaxParameterCount = cpu_to_le16(4);

	pSMB->MaxDataCount = cpu_to_le16(100);	/* BB find exact max SMB PDU from sess structure BB */

	pSMB->SetupCount = 1;

	pSMB->Reserved3 = 0;

	pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION);

	byte_count = 1 /* pad */ + params + 12;



	pSMB->DataCount = cpu_to_le16(12);

	pSMB->ParameterCount = cpu_to_le16(params);

	pSMB->TotalDataCount = pSMB->DataCount;

	pSMB->TotalParameterCount = pSMB->ParameterCount;

	pSMB->ParameterOffset = cpu_to_le16(param_offset);

	pSMB->DataOffset = cpu_to_le16(offset);



	/* Params. */

	pSMB->FileNum = 0;

	pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO);



	/* Data. */

	pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION);

	pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION);

	pSMB->ClientUnixCap = cpu_to_le64(cap);



	pSMB->hdr.smb_buf_length += byte_count;

	pSMB->ByteCount = cpu_to_le16(byte_count);



	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,

			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);

	if (rc) {

		cERROR(1, ("Send error in SETFSUnixInfo = %d", rc));

	} else {		/* decode response */

		rc = validate_t2((struct smb_t2_rsp *)pSMBr);

		if (rc) {

			rc = -EIO;	/* bad smb */

		}

	}

	cifs_buf_release(pSMB);



	if (rc == -EAGAIN)

		goto SETFSUnixRetry;



	return rc;

}







int

CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon,