Signed-off-by: Pavel Shilovsky <pshilovsky@xxxxxxxxx>
---
fs/cifs/cifsglob.h | 3 ++
fs/cifs/cifsproto.h | 12 ++++------
fs/cifs/cifssmb.c | 60 +++++++++++++++++++++++++-------------------------
fs/cifs/connect.c | 31 +++++---------------------
fs/cifs/smb1ops.c | 25 +++++++++++++++++++++
5 files changed, 69 insertions(+), 62 deletions(-)
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index c294e67..9ce2d4c 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -215,6 +215,9 @@ struct smb_version_operations {
unsigned int *, const struct nls_table *, int);
/* informational QFS call */
void (*qfs_tcon)(const unsigned int, struct cifs_tcon *);
+ /* check if a path is accessible or not */
+ int (*is_path_accessible)(const unsigned int, struct cifs_tcon *,
+ struct cifs_sb_info *, const char *);
};
struct smb_version_values {
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 416d820..f0641ce 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -208,14 +208,12 @@ extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
u16 netfid, FILE_ALL_INFO *pFindData);
extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
- const unsigned char *searchName,
- FILE_ALL_INFO *findData,
- int legacy /* whether to use old info level */,
- const struct nls_table *nls_codepage, int remap);
+ const char *search_Name, FILE_ALL_INFO *data,
+ int legacy /* whether to use old info level */,
+ const struct nls_table *nls_codepage, int remap);
extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
- const unsigned char *searchName,
- FILE_ALL_INFO *findData,
- const struct nls_table *nls_codepage, int remap);
+ const char *search_name, FILE_ALL_INFO *data,
+ const struct nls_table *nls_codepage, int remap);
extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index df0652a..177ea5e 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -3834,10 +3834,10 @@ setCifsAclRetry:
/* Legacy Query Path Information call for lookup to old servers such
as Win9x/WinME */
-int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
- const unsigned char *searchName,
- FILE_ALL_INFO *pFinfo,
- const struct nls_table *nls_codepage, int remap)
+int
+SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
+ const char *search_name, FILE_ALL_INFO *data,
+ const struct nls_table *nls_codepage, int remap)
{
QUERY_INFORMATION_REQ *pSMB;
QUERY_INFORMATION_RSP *pSMBr;
@@ -3845,7 +3845,7 @@ int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
int bytes_returned;
int name_len;
- cFYI(1, "In SMBQPath path %s", searchName);
+ cFYI(1, "In SMBQPath path %s", search_name);
QInfRetry:
rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB,
(void **) &pSMBr);
@@ -3855,14 +3855,14 @@ QInfRetry:
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
cifsConvertToUTF16((__le16 *) pSMB->FileName,
- searchName, PATH_MAX, nls_codepage,
+ search_name, PATH_MAX, nls_codepage,
remap);
name_len++; /* trailing null */
name_len *= 2;
} else {
- name_len = strnlen(searchName, PATH_MAX);
+ name_len = strnlen(search_name, PATH_MAX);
name_len++; /* trailing null */
- strncpy(pSMB->FileName, searchName, name_len);
+ strncpy(pSMB->FileName, search_name, name_len);
}
pSMB->BufferFormat = 0x04;
name_len++; /* account for buffer type byte */
@@ -3873,23 +3873,23 @@ QInfRetry:
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
cFYI(1, "Send error in QueryInfo = %d", rc);
- } else if (pFinfo) {
+ } else if (data) {
struct timespec ts;
__u32 time = le32_to_cpu(pSMBr->last_write_time);
/* decode response */
/* BB FIXME - add time zone adjustment BB */
- memset(pFinfo, 0, sizeof(FILE_ALL_INFO));
+ memset(data, 0, sizeof(FILE_ALL_INFO));
ts.tv_nsec = 0;
ts.tv_sec = time;
/* decode time fields */
- pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts));
- pFinfo->LastWriteTime = pFinfo->ChangeTime;
- pFinfo->LastAccessTime = 0;
- pFinfo->AllocationSize =
+ data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts));
+ data->LastWriteTime = data->ChangeTime;
+ data->LastAccessTime = 0;
+ data->AllocationSize =
cpu_to_le64(le32_to_cpu(pSMBr->size));
- pFinfo->EndOfFile = pFinfo->AllocationSize;
- pFinfo->Attributes =
+ data->EndOfFile = data->AllocationSize;
+ data->Attributes =
cpu_to_le32(le16_to_cpu(pSMBr->attr));
} else
rc = -EIO; /* bad buffer passed in */
@@ -3971,12 +3971,11 @@ QFileInfoRetry:
int
CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
- const unsigned char *searchName,
- FILE_ALL_INFO *pFindData,
+ const char *search_name, FILE_ALL_INFO *data,
int legacy /* old style infolevel */,
const struct nls_table *nls_codepage, int remap)
{
-/* level 263 SMB_QUERY_FILE_ALL_INFO */
+ /* level 263 SMB_QUERY_FILE_ALL_INFO */
TRANSACTION2_QPI_REQ *pSMB = NULL;
TRANSACTION2_QPI_RSP *pSMBr = NULL;
int rc = 0;
@@ -3984,7 +3983,7 @@ CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
int name_len;
__u16 params, byte_count;
-/* cFYI(1, "In QPathInfo path %s", searchName); */
+ /* cFYI(1, "In QPathInfo path %s", search_name); */
QPathInfoRetry:
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
(void **) &pSMBr);
@@ -3993,14 +3992,14 @@ QPathInfoRetry:
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
+ cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name,
PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
- name_len = strnlen(searchName, PATH_MAX);
+ name_len = strnlen(search_name, PATH_MAX);
name_len++; /* trailing null */
- strncpy(pSMB->FileName, searchName, name_len);
+ strncpy(pSMB->FileName, search_name, name_len);
}
params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */;
@@ -4045,20 +4044,21 @@ QPathInfoRetry:
else if (legacy && get_bcc(&pSMBr->hdr) < 24)
rc = -EIO; /* 24 or 26 expected but we do not read
last field */
- else if (pFindData) {
+ else if (data) {
int size;
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- /* On legacy responses we do not read the last field,
- EAsize, fortunately since it varies by subdialect and
- also note it differs on Set vs. Get, ie two bytes or 4
- bytes depending but we don't care here */
+ /*
+ * On legacy responses we do not read the last field,
+ * EAsize, fortunately since it varies by subdialect and
+ * also note it differs on Set vs Get, ie two bytes or 4
+ * bytes depending but we don't care here.
+ */
if (legacy)
size = sizeof(FILE_INFO_STANDARD);
else
size = sizeof(FILE_ALL_INFO);
- memcpy((char *) pFindData,
- (char *) &pSMBr->hdr.Protocol +
+ memcpy((char *) data, (char *) &pSMBr->hdr.Protocol +
data_offset, size);
} else
rc = -ENOMEM;
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index fe883a0..9e82950 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -3386,30 +3386,6 @@ cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *pvolume_info)
return rsize;
}
-static int
-is_path_accessible(unsigned int xid, struct cifs_tcon *tcon,
- struct cifs_sb_info *cifs_sb, const char *full_path)
-{
- int rc;
- FILE_ALL_INFO *pfile_info;
-
- pfile_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
- if (pfile_info == NULL)
- return -ENOMEM;
-
- rc = CIFSSMBQPathInfo(xid, tcon, full_path, pfile_info,
- 0 /* not legacy */, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
-
- if (rc == -EOPNOTSUPP || rc == -EINVAL)
- rc = SMBQueryInformation(xid, tcon, full_path, pfile_info,
- cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- kfree(pfile_info);
- return rc;
-}
-
static void
cleanup_volume_info_contents(struct smb_vol *volume_info)
{
@@ -3687,13 +3663,18 @@ remote_path_check:
/* check if a whole path is not remote */
if (!rc && tcon) {
+ if (!server->ops->is_path_accessible) {
+ rc = -ENOSYS;
+ goto mount_fail_check;
+ }
/* build_path_to_root works only when we have a valid tcon */
full_path = cifs_build_path_to_root(volume_info, cifs_sb, tcon);
if (full_path == NULL) {
rc = -ENOMEM;
goto mount_fail_check;
}
- rc = is_path_accessible(xid, tcon, cifs_sb, full_path);
+ rc = server->ops->is_path_accessible(xid, tcon, cifs_sb,
+ full_path);
if (rc != 0 && rc != -EREMOTE) {
kfree(full_path);
goto mount_fail_check;
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index 96eb06f..43f3881 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -417,6 +417,30 @@ cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
CIFSSMBQFSAttributeInfo(xid, tcon);
}
+static int
+cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const char *full_path)
+{
+ int rc;
+ FILE_ALL_INFO *file_info;
+
+ file_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
+ if (file_info == NULL)
+ return -ENOMEM;
+
+ rc = CIFSSMBQPathInfo(xid, tcon, full_path, file_info,
+ 0 /* not legacy */, cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ if (rc == -EOPNOTSUPP || rc == -EINVAL)
+ rc = SMBQueryInformation(xid, tcon, full_path, file_info,
+ cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ kfree(file_info);
+ return rc;
+}
+
struct smb_version_operations smb1_operations = {
.send_cancel = send_nt_cancel,
.compare_fids = cifs_compare_fids,
@@ -443,6 +467,7 @@ struct smb_version_operations smb1_operations = {
.tree_disconnect = CIFSSMBTDis,
.get_dfs_refer = CIFSGetDFSRefer,
.qfs_tcon = cifs_qfs_tcon,
+ .is_path_accessible = cifs_is_path_accessible,
};
struct smb_version_values smb1_values = {
--
1.7.1
--
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