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[CIFS] Level 1 QPathInfo needed for proper OS2 support

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Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French 2006-10-12 03:28:28 +00:00
parent ddae957da4
commit acf1a1b104
3 changed files with 23 additions and 4 deletions
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1
fs/cifs/cifsproto.h
View file

@ -119,6 +119,7 @@ extern int CIFSFindClose(const int, struct cifsTconInfo *tcon,
extern int CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *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);
extern int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
const unsigned char *searchName,

21
fs/cifs/cifssmb.c
View file

@ -2969,6 +2969,7 @@ int
CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
const unsigned char *searchName,
FILE_ALL_INFO * pFindData,
int legacy /* old style infolevel */,
const struct nls_table *nls_codepage, int remap)
{
/* level 263 SMB_QUERY_FILE_ALL_INFO */
@ -3017,7 +3018,10 @@ QPathInfoRetry:
byte_count = params + 1 /* pad */ ;
pSMB->TotalParameterCount = cpu_to_le16(params);
pSMB->ParameterCount = pSMB->TotalParameterCount;
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
if(legacy)
pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD);
else
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
pSMB->Reserved4 = 0;
pSMB->hdr.smb_buf_length += byte_count;
pSMB->ByteCount = cpu_to_le16(byte_count);
@ -3029,13 +3033,24 @@ QPathInfoRetry:
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
if (rc || (pSMBr->ByteCount < 40))
if (rc) /* BB add auto retry on EOPNOTSUPP? */
rc = -EIO;
else if (!legacy && (pSMBr->ByteCount < 40))
rc = -EIO; /* bad smb */
else if(legacy && (pSMBr->ByteCount < 24))
rc = -EIO; /* 24 or 26 expected but we do not read last field */
else if (pFindData){
int size;
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
if(legacy) /* we do not read the last field, EAsize, fortunately
since it varies by subdialect and on Set vs. Get, is
two bytes or 4 bytes depending but we don't care here */
size = sizeof(FILE_INFO_STANDARD);
else
size = sizeof(FILE_ALL_INFO);
memcpy((char *) pFindData,
(char *) &pSMBr->hdr.Protocol +
data_offset, sizeof (FILE_ALL_INFO));
data_offset, size);
} else
rc = -ENOMEM;
}

5
fs/cifs/inode.c
View file

@ -338,6 +338,7 @@ int cifs_get_inode_info(struct inode **pinode,
pfindData = (FILE_ALL_INFO *)buf;
/* could do find first instead but this returns more info */
rc = CIFSSMBQPathInfo(xid, pTcon, search_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
@ -385,8 +386,10 @@ int cifs_get_inode_info(struct inode **pinode,
/* get new inode */
if (*pinode == NULL) {
*pinode = new_inode(sb);
if (*pinode == NULL)
if (*pinode == NULL) {
kfree(buf);
return -ENOMEM;
}
/* 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