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[CIFS] Recognize properly symlinks and char/blk devices (not just FIFOs)

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created by SFU (part 1 of 2).

Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French
2005-11-15 16:43:39 -08:00
parent 7b0a65f992
commit d6e2f2a4c8
2 changed files with 66 additions and 10 deletions
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74
fs/cifs/inode.c
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@@ -97,9 +97,9 @@ int cifs_get_inode_info_unix(struct inode **pinode,
inode = *pinode;
cifsInfo = CIFS_I(inode);
cFYI(1, (" Old time %ld ", cifsInfo->time));
cFYI(1, ("Old time %ld ", cifsInfo->time));
cifsInfo->time = jiffies;
cFYI(1, (" New time %ld ", cifsInfo->time));
cFYI(1, ("New time %ld ", cifsInfo->time));
/* this is ok to set on every inode revalidate */
atomic_set(&cifsInfo->inUse,1);
@@ -195,6 +195,55 @@ int cifs_get_inode_info_unix(struct inode **pinode,
return rc;
}
static int decode_sfu_inode(struct inode * inode, __u64 size,
const unsigned char *path,
struct cifs_sb_info *cifs_sb, int xid)
{
int rc;
int oplock = FALSE;
__u16 netfid;
struct cifsTconInfo *pTcon = cifs_sb->tcon;
char buf[8];
unsigned int bytes_read;
char * pbuf;
pbuf = buf;
if(size == 0) {
inode->i_mode |= S_IFIFO;
return 0;
} else if (size < 8) {
return -EINVAL; /* EOPNOTSUPP? */
}
rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ,
CREATE_NOT_DIR, &netfid, &oplock, NULL,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc==0) {
/* Read header */
rc = CIFSSMBRead(xid, pTcon,
netfid,
8 /* length */, 0 /* offset */,
&bytes_read, &pbuf);
if((rc == 0) && (bytes_read == 8)) {
/* if memcmp(IntxCHR\000, pbuf, 8)
else if memcmp(IntxBLK\000, pbuf, 8)
else if memcmp(IntxLNK\001, pbuf, 8) */
}
CIFSSMBClose(xid, pTcon, netfid);
/* inode->i_rdev = MKDEV(le64_to_cpu(DevMajor),
le64_to_cpu(DevMinor) & MINORMASK);*/
/* inode->i_mode |= S_IFBLK; */
}
return rc;
}
int cifs_get_inode_info(struct inode **pinode,
const unsigned char *search_path, FILE_ALL_INFO *pfindData,
struct super_block *sb, int xid)
@@ -207,7 +256,7 @@ int cifs_get_inode_info(struct inode **pinode,
char *buf = NULL;
pTcon = cifs_sb->tcon;
cFYI(1,("Getting info on %s ", search_path));
cFYI(1,("Getting info on %s", search_path));
if ((pfindData == NULL) && (*pinode != NULL)) {
if (CIFS_I(*pinode)->clientCanCacheRead) {
@@ -345,10 +394,15 @@ int cifs_get_inode_info(struct inode **pinode,
(pfindData->EndOfFile == 0)) {
inode->i_mode = cifs_sb->mnt_file_mode;
inode->i_mode |= S_IFIFO;
/* BB Finish for SFU style symlinks and devies */
/* } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
(cifsInfo->cifsAttrs & ATTR_SYSTEM) && ) */
/* BB Finish for SFU style symlinks and devices */
} else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
(cifsInfo->cifsAttrs & ATTR_SYSTEM)) {
if (decode_sfu_inode(inode,
le64_to_cpu(pfindData->EndOfFile),
search_path,
cifs_sb, xid)) {
cFYI(1,("Unrecognized sfu inode type"));
}
} else {
inode->i_mode |= S_IFREG;
/* treat the dos attribute of read-only as read-only
@@ -382,7 +436,7 @@ int cifs_get_inode_info(struct inode **pinode,
}
if (S_ISREG(inode->i_mode)) {
cFYI(1, (" File inode "));
cFYI(1, ("File inode"));
inode->i_op = &cifs_file_inode_ops;
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
@@ -400,11 +454,11 @@ int cifs_get_inode_info(struct inode **pinode,
4096 + MAX_CIFS_HDR_SIZE)
inode->i_data.a_ops->readpages = NULL;
} else if (S_ISDIR(inode->i_mode)) {
cFYI(1, (" Directory inode "));
cFYI(1, ("Directory inode"));
inode->i_op = &cifs_dir_inode_ops;
inode->i_fop = &cifs_dir_ops;
} else if (S_ISLNK(inode->i_mode)) {
cFYI(1, (" Symbolic Link inode "));
cFYI(1, ("Symbolic Link inode"));
inode->i_op = &cifs_symlink_inode_ops;
} else {
init_special_inode(inode, inode->i_mode,