Add ability to modify cifs acls for handling chmod (when mounted with
cifsacl flag). Fix prefixpath path separator so we can handle mounts
with prefixpaths longer than one directory (one path component) when
-mounted to Windows servers.
+mounted to Windows servers. Fix slow file open when cifsacl
+enabled.
Version 1.51
------------
It was designed to comply with the SNIA CIFS Technical Reference (which
supersedes the 1992 X/Open SMB Standard) as well as to perform best practice
practical interoperability with Windows 2000, Windows XP, Samba and equivalent
-servers.
+servers. This code was developed in participation with the Protocol Freedom
+Information Foundation.
+
+Please see
+ http://protocolfreedom.org/ and
+ http://samba.org/samba/PFIF/
+for more details.
+
For questions or bug reports please contact:
sfrench@samba.org (sfrench@us.ibm.com)
#include "dns_resolve.h"
#include "cifs_debug.h"
-LIST_HEAD(cifs_dfs_automount_list);
+static LIST_HEAD(cifs_dfs_automount_list);
/*
* DFS functions
/* Convert permission bits from mode to equivalent CIFS ACL */
static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd,
- int acl_len, struct inode *inode, __u64 nmode)
+ struct inode *inode, __u64 nmode)
{
int rc = 0;
__u32 dacloffset;
int mode_to_acl(struct inode *inode, const char *path, __u64 nmode)
{
int rc = 0;
- __u32 acllen = 0;
+ __u32 secdesclen = 0;
struct cifs_ntsd *pntsd = NULL; /* acl obtained from server */
struct cifs_ntsd *pnntsd = NULL; /* modified acl to be sent to server */
cFYI(DBG2, ("set ACL from mode for %s", path));
/* Get the security descriptor */
- pntsd = get_cifs_acl(&acllen, inode, path, NULL);
+ pntsd = get_cifs_acl(&secdesclen, inode, path, NULL);
/* Add three ACEs for owner, group, everyone getting rid of
other ACEs as chmod disables ACEs and set the security descriptor */
set security descriptor request security descriptor
parameters, and secuirty descriptor itself */
- pnntsd = kmalloc(acllen, GFP_KERNEL);
+ secdesclen = secdesclen < DEFSECDESCLEN ?
+ DEFSECDESCLEN : secdesclen;
+ pnntsd = kmalloc(secdesclen, GFP_KERNEL);
if (!pnntsd) {
cERROR(1, ("Unable to allocate security descriptor"));
kfree(pntsd);
return (-ENOMEM);
}
- rc = build_sec_desc(pntsd, pnntsd, acllen, inode, nmode);
+ rc = build_sec_desc(pntsd, pnntsd, inode, nmode);
cFYI(DBG2, ("build_sec_desc rc: %d", rc));
if (!rc) {
/* Set the security descriptor */
- rc = set_cifs_acl(pnntsd, acllen, inode, path);
+ rc = set_cifs_acl(pnntsd, secdesclen, inode, path);
cFYI(DBG2, ("set_cifs_acl rc: %d", rc));
}
#define NUM_SUBAUTHS 5 /* number of sub authority fields */
#define NUM_WK_SIDS 7 /* number of well known sids */
#define SIDNAMELENGTH 20 /* long enough for the ones we care about */
+#define DEFSECDESCLEN 192 /* sec desc len contaiting a dacl with three aces */
#define READ_BIT 0x4
#define WRITE_BIT 0x2
extern const struct inode_operations cifs_file_inode_ops;
extern const struct inode_operations cifs_symlink_inode_ops;
-extern struct list_head cifs_dfs_automount_list;
extern struct inode_operations cifs_dfs_referral_inode_operations;
-
/* Functions related to files and directories */
extern const struct file_operations cifs_file_ops;
extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */
/*
* fs/cifs/cifspdu.h
*
- * Copyright (c) International Business Machines Corp., 2002,2007
+ * Copyright (c) International Business Machines Corp., 2002,2008
* Author(s): Steve French (sfrench@us.ibm.com)
*
* This library is free software; you can redistribute it and/or modify
path names in response */
#define SMBFLG2_KNOWS_EAS cpu_to_le16(2)
#define SMBFLG2_SECURITY_SIGNATURE cpu_to_le16(4)
+#define SMBFLG2_COMPRESSED (8)
+#define SMBFLG2_SECURITY_SIGNATURE_REQUIRED (0x10)
#define SMBFLG2_IS_LONG_NAME cpu_to_le16(0x40)
+#define SMBFLG2_REPARSE_PATH (0x400)
#define SMBFLG2_EXT_SEC cpu_to_le16(0x800)
#define SMBFLG2_DFS cpu_to_le16(0x1000)
#define SMBFLG2_PAGING_IO cpu_to_le16(0x2000)
#define FILE_SHARE_DELETE 0x00000004
#define FILE_SHARE_ALL 0x00000007
-/* CreateDisposition flags */
+/* CreateDisposition flags, similar to CreateAction as well */
#define FILE_SUPERSEDE 0x00000000
#define FILE_OPEN 0x00000001
#define FILE_CREATE 0x00000002
#define CREATE_NOT_FILE 0x00000001 /* if set must not be file */
#define CREATE_WRITE_THROUGH 0x00000002
#define CREATE_SEQUENTIAL 0x00000004
-#define CREATE_SYNC_ALERT 0x00000010
-#define CREATE_ASYNC_ALERT 0x00000020
+#define CREATE_NO_BUFFER 0x00000008 /* should not buffer on srv */
+#define CREATE_SYNC_ALERT 0x00000010 /* MBZ */
+#define CREATE_ASYNC_ALERT 0x00000020 /* MBZ */
#define CREATE_NOT_DIR 0x00000040 /* if set must not be directory */
+#define CREATE_TREE_CONNECTION 0x00000080 /* should be zero */
+#define CREATE_COMPLETE_IF_OPLK 0x00000100 /* should be zero */
#define CREATE_NO_EA_KNOWLEDGE 0x00000200
-#define CREATE_EIGHT_DOT_THREE 0x00000400
+#define CREATE_EIGHT_DOT_THREE 0x00000400 /* doc says this is obsolete
+ open for recovery flag - should
+ be zero */
#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_NO_COMPRESSION 0x00008000
+#define CREATE_RESERVE_OPFILTER 0x00100000 /* should be zero */
#define OPEN_REPARSE_POINT 0x00200000
+#define OPEN_NO_RECALL 0x00400000
+#define OPEN_FREE_SPACE_QUERY 0x00800000 /* should be zero */
#define CREATE_OPTIONS_MASK 0x007FFFFF
#define CREATE_OPTION_SPECIAL 0x20000000 /* system. NB not sent over wire */
typedef struct negotiate_rsp {
struct smb_hdr hdr; /* wct = 17 */
- __le16 DialectIndex;
+ __le16 DialectIndex; /* 0xFFFF = no dialect acceptable */
__u8 SecurityMode;
__le16 MaxMpxCount;
__le16 MaxNumberVcs;
#define CAP_INFOLEVEL_PASSTHRU 0x00002000
#define CAP_LARGE_READ_X 0x00004000
#define CAP_LARGE_WRITE_X 0x00008000
+#define CAP_LWIO 0x00010000 /* support fctl_srv_req_resume_key */
#define CAP_UNIX 0x00800000
-#define CAP_RESERVED 0x02000000
-#define CAP_BULK_TRANSFER 0x20000000
-#define CAP_COMPRESSED_DATA 0x40000000
+#define CAP_COMPRESSED_DATA 0x02000000
+#define CAP_DYNAMIC_REAUTH 0x20000000
+#define CAP_PERSISTENT_HANDLES 0x40000000
#define CAP_EXTENDED_SECURITY 0x80000000
typedef union smb_com_session_setup_andx {
} __attribute__((packed)) TCONX_REQ;
typedef struct smb_com_tconx_rsp {
- struct smb_hdr hdr; /* wct = 3 note that Win2000 has sent wct = 7
- in some cases on responses. Four unspecified
- words followed OptionalSupport */
+ struct smb_hdr hdr; /* wct = 3 , not extended response */
__u8 AndXCommand;
__u8 AndXReserved;
__le16 AndXOffset;
/* STRING NativeFileSystem */
} __attribute__((packed)) TCONX_RSP;
+typedef struct smb_com_tconx_rsp_ext {
+ struct smb_hdr hdr; /* wct = 7, extended response */
+ __u8 AndXCommand;
+ __u8 AndXReserved;
+ __le16 AndXOffset;
+ __le16 OptionalSupport; /* see below */
+ __le32 MaximalShareAccessRights;
+ __le32 GuestMaximalShareAccessRights;
+ __u16 ByteCount;
+ unsigned char Service[1]; /* always ASCII, not Unicode */
+ /* STRING NativeFileSystem */
+} __attribute__((packed)) TCONX_RSP_EXT;
+
+
/* tree connect Flags */
#define DISCONNECT_TID 0x0001
+#define TCON_EXTENDED_SIGNATURES 0x0004
#define TCON_EXTENDED_SECINFO 0x0008
+
/* OptionalSupport bits */
#define SMB_SUPPORT_SEARCH_BITS 0x0001 /* "must have" directory search bits
(exclusive searches supported) */
#define SMB_SHARE_IS_IN_DFS 0x0002
+#define SMB_CSC_MASK 0x000C
+/* CSC flags defined as follows */
+#define SMB_CSC_CACHE_MANUAL_REINT 0x0000
+#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
+
+/* services
+ *
+ * A: ie disk
+ * LPT1: ie printer
+ * IPC ie named pipe
+ * COMM
+ * ????? ie any type
+ *
+ */
typedef struct smb_com_logoff_andx_req {
struct smb_hdr hdr; /* wct = 2 */
#define COMM_DEV_TYPE 0x0004
#define UNKNOWN_TYPE 0xFFFF
+/* Device Type or File Status Flags */
+#define NO_EAS 0x0001
+#define NO_SUBSTREAMS 0x0002
+#define NO_REPARSETAG 0x0004
+/* following flags can apply if pipe */
+#define ICOUNT_MASK 0x00FF
+#define PIPE_READ_MODE 0x0100
+#define NAMED_PIPE_TYPE 0x0400
+#define PIPE_END_POINT 0x0800
+#define BLOCKING_NAMED_PIPE 0x8000
+
typedef struct smb_com_open_req { /* also handles create */
struct smb_hdr hdr; /* wct = 24 */
__u8 AndXCommand;
__u8 Reserved; /* Must Be Zero */
__le16 NameLength;
__le32 OpenFlags;
- __le32 RootDirectoryFid;
+ __u32 RootDirectoryFid;
__le32 DesiredAccess;
__le64 AllocationSize;
__le32 FileAttributes;
__u16 ByteCount; /* bct = 0 */
} __attribute__((packed)) OPEN_RSP;
+typedef struct smb_com_open_rsp_ext {
+ struct smb_hdr hdr; /* wct = 42 but meaningless due to MS bug? */
+ __u8 AndXCommand;
+ __u8 AndXReserved;
+ __le16 AndXOffset;
+ __u8 OplockLevel;
+ __u16 Fid;
+ __le32 CreateAction;
+ __le64 CreationTime;
+ __le64 LastAccessTime;
+ __le64 LastWriteTime;
+ __le64 ChangeTime;
+ __le32 FileAttributes;
+ __le64 AllocationSize;
+ __le64 EndOfFile;
+ __le16 FileType;
+ __le16 DeviceState;
+ __u8 DirectoryFlag;
+ __u8 VolumeGUID[16];
+ __u64 FileId; /* note no endian conversion - is opaque UniqueID */
+ __le32 MaximalAccessRights;
+ __le32 GuestMaximalAccessRights;
+ __u16 ByteCount; /* bct = 0 */
+} __attribute__((packed)) OPEN_RSP_EXT;
+
+
/* format of legacy open request */
typedef struct smb_com_openx_req {
struct smb_hdr hdr; /* wct = 15 */
#define SMB_QUERY_CIFS_UNIX_INFO 0x200
#define SMB_QUERY_POSIX_FS_INFO 0x201
#define SMB_QUERY_POSIX_WHO_AM_I 0x202
+#define SMB_QUERY_FS_PROXY 0x203 /* WAFS enabled. Returns structure
+ FILE_SYSTEM__UNIX_INFO to tell
+ whether new NTIOCTL available
+ (0xACE) for WAN friendly SMB
+ operations to be carried */
#define SMB_QUERY_LABEL_INFO 0x3ea
#define SMB_QUERY_FS_QUOTA_INFO 0x3ee
#define SMB_QUERY_FS_FULL_SIZE_INFO 0x3ef
#define CIFS_UNIX_LARGE_READ_CAP 0x00000040 /* support reads >128K (up
to 0xFFFF00 */
#define CIFS_UNIX_LARGE_WRITE_CAP 0x00000080
-
+#define CIFS_UNIX_PROXY_CAP 0x00000100 /* Proxy cap: 0xACE ioctl and
+ QFS PROXY call */
#ifdef CONFIG_CIFS_POSIX
/* Can not set pathnames cap yet until we send new posix create SMB since
otherwise server can treat such handles opened with older ntcreatex
extern struct oplock_q_entry *AllocOplockQEntry(struct inode *, u16,
struct cifsTconInfo *);
extern void DeleteOplockQEntry(struct oplock_q_entry *);
+extern void DeleteTconOplockQEntries(struct cifsTconInfo *);
extern struct timespec cifs_NTtimeToUnix(u64 utc_nanoseconds_since_1601);
extern u64 cifs_UnixTimeToNT(struct timespec);
extern __le64 cnvrtDosCifsTm(__u16 date, __u16 time);
rc = CIFSTCon(0, tcon->ses, tcon->treeName,
tcon, nls_codepage);
up(&tcon->ses->sesSem);
- /* tell server which Unix caps we support */
- if (tcon->ses->capabilities & CAP_UNIX)
- reset_cifs_unix_caps(0 /* no xid */,
- tcon,
- NULL /* we do not know sb */,
- NULL /* no vol info */);
/* BB FIXME add code to check if wsize needs
update due to negotiated smb buffer size
shrinking */
- if (rc == 0)
+ if (rc == 0) {
atomic_inc(&tconInfoReconnectCount);
+ /* tell server Unix caps we support */
+ if (tcon->ses->capabilities & CAP_UNIX)
+ reset_cifs_unix_caps(
+ 0 /* no xid */,
+ tcon,
+ NULL /* we do not know sb */,
+ NULL /* no vol info */);
+ }
cFYI(1, ("reconnect tcon rc = %d", rc));
/* Removed call to reopen open files here.
rc = CIFSTCon(0, tcon->ses, tcon->treeName,
tcon, nls_codepage);
up(&tcon->ses->sesSem);
- /* tell server which Unix caps we support */
- if (tcon->ses->capabilities & CAP_UNIX)
- reset_cifs_unix_caps(0 /* no xid */,
- tcon,
- NULL /* do not know sb */,
- NULL /* no vol info */);
/* BB FIXME add code to check if wsize needs
update due to negotiated smb buffer size
shrinking */
- if (rc == 0)
+ if (rc == 0) {
atomic_inc(&tconInfoReconnectCount);
+ /* tell server Unix caps we support */
+ if (tcon->ses->capabilities & CAP_UNIX)
+ reset_cifs_unix_caps(
+ 0 /* no xid */,
+ tcon,
+ NULL /* do not know sb */,
+ NULL /* no vol info */);
+ }
cFYI(1, ("reconnect tcon rc = %d", rc));
/* Removed call to reopen open files here.
FreeXid(xid);
return 0;
}
+ DeleteTconOplockQEntries(cifs_sb->tcon);
tconInfoFree(cifs_sb->tcon);
if ((ses) && (ses->server)) {
/* save off task so we do not refer to ses later */
spin_unlock(&inode->i_lock);
}
-static const unsigned char *cifs_get_search_path(struct cifsTconInfo *pTcon,
- const char *search_path)
+static const unsigned char *cifs_get_search_path(struct cifs_sb_info *cifs_sb,
+ const char *search_path)
{
int tree_len;
int path_len;
+ int i;
char *tmp_path;
+ struct cifsTconInfo *pTcon = cifs_sb->tcon;
if (!(pTcon->Flags & SMB_SHARE_IS_IN_DFS))
return search_path;
return search_path;
strncpy(tmp_path, pTcon->treeName, tree_len);
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
+ for (i = 0; i < tree_len; i++) {
+ if (tmp_path[i] == '\\')
+ tmp_path[i] = '/';
+ }
strncpy(tmp_path+tree_len, search_path, path_len);
tmp_path[tree_len+path_len] = 0;
return tmp_path;
pTcon = cifs_sb->tcon;
cFYI(1, ("Getting info on %s", search_path));
- full_path = cifs_get_search_path(pTcon, search_path);
+ full_path = cifs_get_search_path(cifs_sb, search_path);
try_again_CIFSSMBUnixQPathInfo:
/* could have done a find first instead but this returns more info */
return -ENOMEM;
pfindData = (FILE_ALL_INFO *)buf;
- full_path = cifs_get_search_path(pTcon, search_path);
+ full_path = cifs_get_search_path(cifs_sb, search_path);
try_again_CIFSSMBQPathInfo:
/* could do find first instead but this returns more info */
kmem_cache_free(cifs_oplock_cachep, oplockEntry);
}
+
+void DeleteTconOplockQEntries(struct cifsTconInfo *tcon)
+{
+ struct oplock_q_entry *temp;
+
+ if (tcon == NULL)
+ return;
+
+ spin_lock(&GlobalMid_Lock);
+ list_for_each_entry(temp, &GlobalOplock_Q, qhead) {
+ if ((temp->tcon) && (temp->tcon == tcon)) {
+ list_del(&temp->qhead);
+ kmem_cache_free(cifs_oplock_cachep, temp);
+ }
+ }
+ spin_unlock(&GlobalMid_Lock);
+}
+
int
smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
unsigned int smb_buf_length, struct sockaddr *sin)
projects / linux-2.6-block.git / commitdiff