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CIFS: Make CAP_* checks protocol independent 

Since both CIFS and SMB2 use ses->capabilities (server->capabilities)
field but flags are different we should make such checks protocol
independent.

Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Pavel Shilovsky 2012-07-13 13:58:14 +04:00 committed by Steve French
parent d60622eb5a
commit 29e20f9c65
11 changed files with 66 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
fs/cifs/cifsglob.h
View File

@ -258,6 +258,9 @@ struct smb_version_values {
size_t max_header_size;
size_t read_rsp_size;
__le16 lock_cmd;
unsigned int cap_unix;
unsigned int cap_nt_find;
unsigned int cap_large_files;
};
#define HEADER_SIZE(server) (server->vals->header_size)
@ -408,7 +411,7 @@ struct TCP_Server_Info {
unsigned int max_vcs; /* maximum number of smb sessions, at least
those that can be specified uniquely with
vcnumbers */
int capabilities; /* allow selective disabling of caps by smb sess */
unsigned int capabilities; /* selective disabling of caps by smb sess */
int timeAdj; /* Adjust for difference in server time zone in sec */
__u64 CurrentMid; /* multiplex id - rotating counter */
char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */
@ -532,7 +535,7 @@ struct cifs_ses {
__u64 Suid; /* remote smb uid */
uid_t linux_uid; /* overriding owner of files on the mount */
uid_t cred_uid; /* owner of credentials */
int capabilities;
unsigned int capabilities;
char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for
TCP names - will ipv6 and sctp addresses fit? */
char *user_name; /* must not be null except during init of sess
@ -554,6 +557,13 @@ struct cifs_ses {
which do not negotiate NTLM or POSIX dialects, but instead
negotiate one of the older LANMAN dialects */
#define CIFS_SES_LANMAN 8
static inline bool
cap_unix(struct cifs_ses *ses)
{
return ses->server->vals->cap_unix & ses->capabilities;
}
/*
* there is one of these for each connection to a resource on a particular
* session

6
fs/cifs/connect.c
View File

@ -3634,7 +3634,7 @@ try_mount_again:
}
/* tell server which Unix caps we support */
if (tcon->ses->capabilities & CAP_UNIX) {
if (cap_unix(tcon->ses)) {
/* reset of caps checks mount to see if unix extensions
disabled for just this mount */
reset_cifs_unix_caps(xid, tcon, cifs_sb, volume_info);
@ -3993,7 +3993,7 @@ cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
ses->flags = 0;
ses->capabilities = server->capabilities;
if (linuxExtEnabled == 0)
ses->capabilities &= (~CAP_UNIX);
ses->capabilities &= (~server->vals->cap_unix);
cFYI(1, "Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d",
server->sec_mode, server->capabilities, server->timeAdj);
@ -4100,7 +4100,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid)
goto out;
}
if (ses->capabilities & CAP_UNIX)
if (cap_unix(ses))
reset_cifs_unix_caps(0, tcon, NULL, vol_info);
out:
kfree(vol_info->username);

3
fs/cifs/dir.c
View File

@ -182,8 +182,7 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
goto out;
}
if (tcon->unix_ext && (tcon->ses->capabilities & CAP_UNIX) &&
!tcon->broken_posix_open &&
if (tcon->unix_ext && cap_unix(tcon->ses) && !tcon->broken_posix_open &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
rc = cifs_posix_open(full_path, &newinode,

33
fs/cifs/file.c
View File

@ -385,9 +385,8 @@ int cifs_open(struct inode *inode, struct file *file)
oplock = 0;
if (!tcon->broken_posix_open && tcon->unix_ext &&
(tcon->ses->capabilities & CAP_UNIX) &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
/* can not refresh inode info since size could be stale */
rc = cifs_posix_open(full_path, &inode, inode->i_sb,
cifs_sb->mnt_file_mode /* ignored */,
@ -509,10 +508,9 @@ static int cifs_reopen_file(struct cifsFileInfo *pCifsFile, bool can_flush)
else
oplock = 0;
if (tcon->unix_ext && (tcon->ses->capabilities & CAP_UNIX) &&
if (tcon->unix_ext && cap_unix(tcon->ses) &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
/*
* O_CREAT, O_EXCL and O_TRUNC already had their effect on the
* original open. Must mask them off for a reopen.
@ -1071,7 +1069,7 @@ cifs_push_locks(struct cifsFileInfo *cfile)
struct cifs_sb_info *cifs_sb = CIFS_SB(cfile->dentry->d_sb);
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
if ((tcon->ses->capabilities & CAP_UNIX) &&
if (cap_unix(tcon->ses) &&
(CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability)) &&
((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0))
return cifs_push_posix_locks(cfile);
@ -1419,7 +1417,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *flock)
netfid = cfile->netfid;
cinode = CIFS_I(file->f_path.dentry->d_inode);
if ((tcon->ses->capabilities & CAP_UNIX) &&
if (cap_unix(tcon->ses) &&
(CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability)) &&
((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0))
posix_lck = true;
@ -2745,7 +2743,7 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
unsigned int current_read_size;
unsigned int rsize;
struct cifs_sb_info *cifs_sb;
struct cifs_tcon *pTcon;
struct cifs_tcon *tcon;
unsigned int xid;
char *current_offset;
struct cifsFileInfo *open_file;
@ -2765,7 +2763,7 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
return rc;
}
open_file = file->private_data;
pTcon = tlink_tcon(open_file->tlink);
tcon = tlink_tcon(open_file->tlink);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
pid = open_file->pid;
@ -2779,11 +2777,12 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
read_size > total_read;
total_read += bytes_read, current_offset += bytes_read) {
current_read_size = min_t(uint, read_size - total_read, rsize);
/* For windows me and 9x we do not want to request more
than it negotiated since it will refuse the read then */
if ((pTcon->ses) &&
!(pTcon->ses->capabilities & CAP_LARGE_FILES)) {
/*
* For windows me and 9x we do not want to request more than it
* negotiated since it will refuse the read then.
*/
if ((tcon->ses) && !(tcon->ses->capabilities &
tcon->ses->server->vals->cap_large_files)) {
current_read_size = min_t(uint, current_read_size,
CIFSMaxBufSize);
}
@ -2796,7 +2795,7 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
}
io_parms.netfid = open_file->netfid;
io_parms.pid = pid;
io_parms.tcon = pTcon;
io_parms.tcon = tcon;
io_parms.offset = *poffset;
io_parms.length = current_read_size;
rc = CIFSSMBRead(xid, &io_parms, &bytes_read,
@ -2810,7 +2809,7 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
return rc;
}
} else {
cifs_stats_bytes_read(pTcon, total_read);
cifs_stats_bytes_read(tcon, total_read);
*poffset += bytes_read;
}
}

26
fs/cifs/inode.c
View File

@ -1149,9 +1149,8 @@ int cifs_unlink(struct inode *dir, struct dentry *dentry)
goto unlink_out;
}
if ((tcon->ses->capabilities & CAP_UNIX) &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
rc = CIFSPOSIXDelFile(xid, tcon, full_path,
SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
@ -1226,7 +1225,7 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode)
unsigned int xid;
struct cifs_sb_info *cifs_sb;
struct tcon_link *tlink;
struct cifs_tcon *pTcon;
struct cifs_tcon *tcon;
char *full_path = NULL;
struct inode *newinode = NULL;
struct cifs_fattr fattr;
@ -1237,7 +1236,7 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode)
tlink = cifs_sb_tlink(cifs_sb);
if (IS_ERR(tlink))
return PTR_ERR(tlink);
pTcon = tlink_tcon(tlink);
tcon = tlink_tcon(tlink);
xid = get_xid();
@ -1247,9 +1246,8 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode)
goto mkdir_out;
}
if ((pTcon->ses->capabilities & CAP_UNIX) &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
u32 oplock = 0;
FILE_UNIX_BASIC_INFO *pInfo =
kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
@ -1259,7 +1257,7 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode)
}
mode &= ~current_umask();
rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT,
rc = CIFSPOSIXCreate(xid, tcon, SMB_O_DIRECTORY | SMB_O_CREAT,
mode, NULL /* netfid */, pInfo, &oplock,
full_path, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
@ -1303,14 +1301,14 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode)
}
mkdir_retry_old:
/* BB add setting the equivalent of mode via CreateX w/ACLs */
rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls,
rc = CIFSSMBMkDir(xid, tcon, full_path, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc) {
cFYI(1, "cifs_mkdir returned 0x%x", rc);
d_drop(direntry);
} else {
mkdir_get_info:
if (pTcon->unix_ext)
if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&newinode, full_path,
inode->i_sb, xid);
else
@ -1328,7 +1326,7 @@ mkdir_get_info:
if (inode->i_mode & S_ISGID)
mode |= S_ISGID;
if (pTcon->unix_ext) {
if (tcon->unix_ext) {
struct cifs_unix_set_info_args args = {
.mode = mode,
.ctime = NO_CHANGE_64,
@ -1346,7 +1344,7 @@ mkdir_get_info:
args.uid = NO_CHANGE_64;
args.gid = NO_CHANGE_64;
}
CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, &args,
CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
@ -1361,7 +1359,7 @@ mkdir_get_info:
cifsInode = CIFS_I(newinode);
dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
pInfo.Attributes = cpu_to_le32(dosattrs);
tmprc = CIFSSMBSetPathInfo(xid, pTcon,
tmprc = CIFSSMBSetPathInfo(xid, tcon,
full_path, &pInfo,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &

6
fs/cifs/link.c
View File

@ -495,8 +495,8 @@ cifs_follow_link(struct dentry *direntry, struct nameidata *nd)
* but there doesn't seem to be any harm in allowing the client to
* read them.
*/
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
&& !(tcon->ses->capabilities & CAP_UNIX)) {
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) &&
!cap_unix(tcon->ses)) {
rc = -EACCES;
goto out;
}
@ -518,7 +518,7 @@ cifs_follow_link(struct dentry *direntry, struct nameidata *nd)
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if ((rc != 0) && (tcon->ses->capabilities & CAP_UNIX))
if ((rc != 0) && cap_unix(tcon->ses))
rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, &target_path,
cifs_sb->local_nls);

16
fs/cifs/readdir.c
View File

@ -228,7 +228,7 @@ static int initiate_cifs_search(const unsigned int xid, struct file *file)
struct cifsFileInfo *cifsFile;
struct cifs_sb_info *cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
struct tcon_link *tlink = NULL;
struct cifs_tcon *pTcon;
struct cifs_tcon *tcon;
if (file->private_data == NULL) {
tlink = cifs_sb_tlink(cifs_sb);
@ -242,10 +242,10 @@ static int initiate_cifs_search(const unsigned int xid, struct file *file)
}
file->private_data = cifsFile;
cifsFile->tlink = cifs_get_tlink(tlink);
pTcon = tlink_tcon(tlink);
tcon = tlink_tcon(tlink);
} else {
cifsFile = file->private_data;
pTcon = tlink_tcon(cifsFile->tlink);
tcon = tlink_tcon(cifsFile->tlink);
}
cifsFile->invalidHandle = true;
@ -262,11 +262,11 @@ static int initiate_cifs_search(const unsigned int xid, struct file *file)
ffirst_retry:
/* test for Unix extensions */
/* but now check for them on the share/mount not on the SMB session */
/* if (pTcon->ses->capabilities & CAP_UNIX) { */
if (pTcon->unix_ext)
/* if (cap_unix(tcon->ses) { */
if (tcon->unix_ext)
cifsFile->srch_inf.info_level = SMB_FIND_FILE_UNIX;
else if ((pTcon->ses->capabilities &
(CAP_NT_SMBS | CAP_NT_FIND)) == 0) {
else if ((tcon->ses->capabilities &
tcon->ses->server->vals->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;
@ -278,7 +278,7 @@ ffirst_retry:
if (backup_cred(cifs_sb))
search_flags |= CIFS_SEARCH_BACKUP_SEARCH;
rc = CIFSFindFirst(xid, pTcon, full_path, cifs_sb->local_nls,
rc = CIFSFindFirst(xid, tcon, full_path, cifs_sb->local_nls,
&cifsFile->netfid, search_flags, &cifsFile->srch_inf,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR, CIFS_DIR_SEP(cifs_sb));

3
fs/cifs/smb1ops.c
View File

@ -632,4 +632,7 @@ struct smb_version_values smb1_values = {
.max_header_size = MAX_CIFS_HDR_SIZE,
.read_rsp_size = sizeof(READ_RSP),
.lock_cmd = cpu_to_le16(SMB_COM_LOCKING_ANDX),
.cap_unix = CAP_UNIX,
.cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND,
.cap_large_files = CAP_LARGE_FILES,
};

3
fs/cifs/smb2ops.c
View File

@ -325,4 +325,7 @@ struct smb_version_values smb21_values = {
.header_size = sizeof(struct smb2_hdr),
.max_header_size = MAX_SMB2_HDR_SIZE,
.lock_cmd = SMB2_LOCK,
.cap_unix = 0,
.cap_nt_find = SMB2_NT_FIND,
.cap_large_files = SMB2_LARGE_FILES,
};

2
fs/cifs/smb2pdu.c
View File

@ -428,6 +428,8 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses)
/* BB Do we need to validate the SecurityMode? */
server->sec_mode = le16_to_cpu(rsp->SecurityMode);
server->capabilities = le32_to_cpu(rsp->Capabilities);
/* Internal types */
server->capabilities |= SMB2_NT_FIND | SMB2_LARGE_FILES;
security_blob = smb2_get_data_area_len(&blob_offset, &blob_length,
&rsp->hdr);

3
fs/cifs/smb2pdu.h
View File

@ -167,6 +167,9 @@ struct smb2_negotiate_req {
#define SMB2_GLOBAL_CAP_DFS 0x00000001
#define SMB2_GLOBAL_CAP_LEASING 0x00000002 /* Resp only New to SMB2.1 */
#define SMB2_GLOBAL_CAP_LARGE_MTU 0X00000004 /* Resp only New to SMB2.1 */
/* Internal types */
#define SMB2_NT_FIND 0x00100000
#define SMB2_LARGE_FILES 0x00200000
struct smb2_negotiate_rsp {
struct smb2_hdr hdr;