Signed-off-by: Pavel Shilovsky <pshilovsky@xxxxxxxxx>
---
fs/cifs/cifsglob.h | 9 +++++
fs/cifs/cifsproto.h | 7 ++--
fs/cifs/inode.c | 92 ++++++++++++++++++++-------------------------------
fs/cifs/smb1ops.c | 50 +++++++++++++++++++++++++++
4 files changed, 98 insertions(+), 60 deletions(-)
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 7f5cb14..f3a4f6e 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -163,6 +163,7 @@ struct cifsFileInfo;
struct cifs_ses;
struct cifs_tcon;
struct dfs_info3_param;
+struct cifs_fattr;
struct smb_version_operations {
int (*send_cancel)(struct TCP_Server_Info *, void *,
@@ -218,6 +219,14 @@ struct smb_version_operations {
/* check if a path is accessible or not */
int (*is_path_accessible)(const int, struct cifs_tcon *,
struct cifs_sb_info *, const char *);
+ /* query path data from the server */
+ int (*query_path_info)(const int, struct cifs_tcon *,
+ struct cifs_sb_info *, const char *,
+ FILE_ALL_INFO *, bool *);
+ /* get server index number */
+ int (*get_srv_inum)(const int, struct cifs_tcon *,
+ struct cifs_sb_info *, const char *,
+ struct cifs_fattr *, FILE_ALL_INFO *);
};
struct smb_version_values {
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 8b5f2a6..b152cbc 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -138,10 +138,9 @@ extern struct inode *cifs_iget(struct super_block *sb,
struct cifs_fattr *fattr);
extern int cifs_get_file_info(struct file *filp);
-extern int cifs_get_inode_info(struct inode **pinode,
- const unsigned char *search_path,
- FILE_ALL_INFO *pfile_info,
- struct super_block *sb, int xid, const __u16 *pfid);
+extern int cifs_get_inode_info(struct inode **inode, const char *full_path,
+ FILE_ALL_INFO *data, struct super_block *sb,
+ int xid, const __u16 *fid);
extern int cifs_get_file_info_unix(struct file *filp);
extern int cifs_get_inode_info_unix(struct inode **pinode,
const unsigned char *search_path,
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 745da3d..8ba040d 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -600,61 +600,54 @@ cgfi_exit:
return rc;
}
-int cifs_get_inode_info(struct inode **pinode,
- const unsigned char *full_path, FILE_ALL_INFO *pfindData,
- struct super_block *sb, int xid, const __u16 *pfid)
+int
+cifs_get_inode_info(struct inode **inode, const char *full_path,
+ FILE_ALL_INFO *data, struct super_block *sb, int xid,
+ const __u16 *fid)
{
int rc = 0, tmprc;
- struct cifs_tcon *pTcon;
+ struct cifs_tcon *tcon;
+ struct TCP_Server_Info *server;
struct tcon_link *tlink;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
char *buf = NULL;
- bool adjustTZ = false;
+ bool adjust_tz = false;
struct cifs_fattr fattr;
tlink = cifs_sb_tlink(cifs_sb);
if (IS_ERR(tlink))
return PTR_ERR(tlink);
- pTcon = tlink_tcon(tlink);
+ tcon = tlink_tcon(tlink);
+ server = tcon->ses->server;
cFYI(1, "Getting info on %s", full_path);
- if ((pfindData == NULL) && (*pinode != NULL)) {
- if (CIFS_I(*pinode)->clientCanCacheRead) {
+ if ((data == NULL) && (*inode != NULL)) {
+ if (CIFS_I(*inode)->clientCanCacheRead) {
cFYI(1, "No need to revalidate cached inode sizes");
goto cgii_exit;
}
}
- /* if file info not passed in then get it from server */
- if (pfindData == NULL) {
+ /* if inode info is not passed, get it from server */
+ if (data == NULL) {
+ if (!server->ops->query_path_info) {
+ rc = -ENOSYS;
+ goto cgii_exit;
+ }
buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
if (buf == NULL) {
rc = -ENOMEM;
goto cgii_exit;
}
- pfindData = (FILE_ALL_INFO *)buf;
-
- /* could do find first instead but this returns more info */
- rc = CIFSSMBQPathInfo(xid, pTcon, full_path, pfindData,
- 0 /* not legacy */,
- cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- /* BB optimize code so we do not make the above call
- when server claims no NT SMB support and the above call
- failed at least once - set flag in tcon or mount */
- if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
- rc = SMBQueryInformation(xid, pTcon, full_path,
- pfindData, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- adjustTZ = true;
- }
+ data = (FILE_ALL_INFO *)buf;
+ rc = server->ops->query_path_info(xid, tcon, cifs_sb, full_path,
+ data, &adjust_tz);
}
if (!rc) {
- cifs_all_info_to_fattr(&fattr, (FILE_ALL_INFO *) pfindData,
- cifs_sb, adjustTZ);
+ cifs_all_info_to_fattr(&fattr, (FILE_ALL_INFO *)data, cifs_sb,
+ adjust_tz);
} else if (rc == -EREMOTE) {
cifs_create_dfs_fattr(&fattr, sb);
rc = 0;
@@ -668,28 +661,16 @@ int cifs_get_inode_info(struct inode **pinode,
* Is an i_ino of zero legal? Can we use that to check if the server
* supports returning inode numbers? Are there other sanity checks we
* can use to ensure that the server is really filling in that field?
- *
- * We can not use the IndexNumber field by default from Windows or
- * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
- * CIFS spec claims that this value is unique within the scope of a
- * share, and the windows docs hint that it's actually unique
- * per-machine.
- *
- * There may be higher info levels that work but are there Windows
- * server or network appliances for which IndexNumber field is not
- * guaranteed unique?
*/
- if (*pinode == NULL) {
+ if (*inode == NULL) {
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
- int rc1 = 0;
-
- rc1 = CIFSGetSrvInodeNumber(xid, pTcon,
- full_path, &fattr.cf_uniqueid,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc1 || !fattr.cf_uniqueid) {
- cFYI(1, "GetSrvInodeNum rc %d", rc1);
+ if (server->ops->get_srv_inum)
+ tmprc = server->ops->get_srv_inum(xid, tcon,
+ cifs_sb, full_path, &fattr, data);
+ else
+ tmprc = -ENOSYS;
+ if (tmprc || !fattr.cf_uniqueid) {
+ cFYI(1, "GetSrvInodeNum rc %d", tmprc);
fattr.cf_uniqueid = iunique(sb, ROOT_I);
cifs_autodisable_serverino(cifs_sb);
}
@@ -697,7 +678,7 @@ int cifs_get_inode_info(struct inode **pinode,
fattr.cf_uniqueid = iunique(sb, ROOT_I);
}
} else {
- fattr.cf_uniqueid = CIFS_I(*pinode)->uniqueid;
+ fattr.cf_uniqueid = CIFS_I(*inode)->uniqueid;
}
/* query for SFU type info if supported and needed */
@@ -711,8 +692,7 @@ int cifs_get_inode_info(struct inode **pinode,
#ifdef CONFIG_CIFS_ACL
/* fill in 0777 bits from ACL */
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
- rc = cifs_acl_to_fattr(cifs_sb, &fattr, *pinode, full_path,
- pfid);
+ rc = cifs_acl_to_fattr(cifs_sb, &fattr, *inode, full_path, fid);
if (rc) {
cFYI(1, "%s: Getting ACL failed with error: %d",
__func__, rc);
@@ -732,12 +712,12 @@ int cifs_get_inode_info(struct inode **pinode,
cFYI(1, "CIFSCheckMFSymlink: %d", tmprc);
}
- if (!*pinode) {
- *pinode = cifs_iget(sb, &fattr);
- if (!*pinode)
+ if (!*inode) {
+ *inode = cifs_iget(sb, &fattr);
+ if (!*inode)
rc = -ENOMEM;
} else {
- cifs_fattr_to_inode(*pinode, &fattr);
+ cifs_fattr_to_inode(*inode, &fattr);
}
cgii_exit:
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index 554ecba..670fb62 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -452,6 +452,54 @@ cifs_is_path_accessible(const int xid, struct cifs_tcon *tcon,
return rc;
}
+static int
+cifs_query_path_info(const int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const char *full_path,
+ FILE_ALL_INFO *data, bool *adjustTZ)
+{
+ int rc;
+
+ /* could do find first instead but this returns more info */
+ rc = CIFSSMBQPathInfo(xid, tcon, full_path, data, 0 /* not legacy */,
+ cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ /*
+ * BB optimize code so we do not make the above call when server claims
+ * no NT SMB support and the above call failed at least once - set flag
+ * in tcon or mount.
+ */
+ if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
+ rc = SMBQueryInformation(xid, tcon, full_path, data,
+ cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ *adjustTZ = true;
+ }
+ return rc;
+}
+
+static int
+cifs_get_srv_inum(const int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const char *full_path,
+ struct cifs_fattr *fattr, FILE_ALL_INFO *data)
+{
+ /*
+ * We can not use the IndexNumber field by default from Windows or
+ * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
+ * CIFS spec claims that this value is unique within the scope of a
+ * share, and the windows docs hint that it's actually unique
+ * per-machine.
+ *
+ * There may be higher info levels that work but are there Windows
+ * server or network appliances for which IndexNumber field is not
+ * guaranteed unique?
+ */
+ return CIFSGetSrvInodeNumber(xid, tcon, full_path, &fattr->cf_uniqueid,
+ cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+}
+
struct smb_version_operations smb1_operations = {
.send_cancel = send_nt_cancel,
.compare_fids = cifs_compare_fids,
@@ -479,6 +527,8 @@ struct smb_version_operations smb1_operations = {
.get_dfs_refer = cifs_get_dfs_refer,
.qfs_tcon = cifs_qfs_tcon,
.is_path_accessible = cifs_is_path_accessible,
+ .query_path_info = cifs_query_path_info,
+ .get_srv_inum = cifs_get_srv_inum,
};
struct smb_version_values smb1_values = {
--
1.7.1
--
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