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[PATCH] cifs: character mapping of special characters (part 3 of 3)

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Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Steve French
2005-04-28 22:41:06 -07:00
committed by Linus Torvalds
parent 6c91d362f1
commit 737b758c96
14 changed files with 337 additions and 332 deletions
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108
fs/cifs/dir.c
View File

@@ -101,68 +101,15 @@ cifs_bp_rename_retry:
return full_path;
}
/* Note: caller must free return buffer */
char *
build_wildcard_path_from_dentry(struct dentry *direntry)
/* char * build_wildcard_path_from_dentry(struct dentry *direntry)
{
struct dentry *temp;
int namelen = 0;
char *full_path;
if(direntry == NULL)
return NULL; /* not much we can do if dentry is freed and
we need to reopen the file after it was closed implicitly
when the server crashed */
cifs_bwp_rename_retry:
for (temp = direntry; !IS_ROOT(temp);) {
namelen += (1 + temp->d_name.len);
temp = temp->d_parent;
if(temp == NULL) {
cERROR(1,("corrupt dentry"));
return NULL;
}
}
full_path = kmalloc(namelen+3, GFP_KERNEL);
if(full_path == NULL)
return full_path;
full_path[namelen] = '\\';
full_path[namelen+1] = '*';
full_path[namelen+2] = 0; /* trailing null */
for (temp = direntry; !IS_ROOT(temp);) {
namelen -= 1 + temp->d_name.len;
if (namelen < 0) {
break;
} else {
full_path[namelen] = '\\';
strncpy(full_path + namelen + 1, temp->d_name.name,
temp->d_name.len);
cFYI(0, (" name: %s ", full_path + namelen));
}
temp = temp->d_parent;
if(temp == NULL) {
cERROR(1,("corrupt dentry"));
kfree(full_path);
return NULL;
}
}
if (namelen != 0) {
cERROR(1,
("We did not end path lookup where we expected namelen is %d",
namelen));
/* presumably this is only possible if we were racing with a rename
of one of the parent directories (we can not lock the dentries
above us to prevent this, but retrying should be harmless) */
kfree(full_path);
namelen = 0;
goto cifs_bwp_rename_retry;
}
return full_path;
}
full_path[namelen+2] = 0;
BB remove above eight lines BB */
/* Inode operations in similar order to how they appear in the Linux file fs.h */
@@ -235,7 +182,8 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
rc = CIFSSMBOpen(xid, pTcon, full_path, disposition,
desiredAccess, CREATE_NOT_DIR,
&fileHandle, &oplock, buf, cifs_sb->local_nls);
&fileHandle, &oplock, buf, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc) {
cFYI(1, ("cifs_create returned 0x%x ", rc));
} else {
@@ -248,13 +196,17 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
(__u64)current->euid,
(__u64)current->egid,
0 /* dev */,
cifs_sb->local_nls);
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
} else {
CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode,
(__u64)-1,
(__u64)-1,
0 /* dev */,
cifs_sb->local_nls);
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
}
else {
/* BB implement via Windows security descriptors */
@@ -356,11 +308,15 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode, dev_t dev
if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path,
mode,(__u64)current->euid,(__u64)current->egid,
device_number, cifs_sb->local_nls);
device_number, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
} else {
rc = CIFSSMBUnixSetPerms(xid, pTcon,
full_path, mode, (__u64)-1, (__u64)-1,
device_number, cifs_sb->local_nls);
device_number, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
}
if(!rc) {
@@ -447,36 +403,6 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, struct name
return ERR_PTR(rc);
}
int
cifs_dir_open(struct inode *inode, struct file *file)
{ /* NB: currently unused since searches are opened in readdir */
int rc = 0;
int xid;
struct cifs_sb_info *cifs_sb;
struct cifsTconInfo *pTcon;
char *full_path = NULL;
xid = GetXid();
cifs_sb = CIFS_SB(inode->i_sb);
pTcon = cifs_sb->tcon;
if(file->f_dentry) {
down(&file->f_dentry->d_sb->s_vfs_rename_sem);
full_path = build_wildcard_path_from_dentry(file->f_dentry);
up(&file->f_dentry->d_sb->s_vfs_rename_sem);
} else {
FreeXid(xid);
return -EIO;
}
cFYI(1, ("inode = 0x%p and full path is %s", inode, full_path));
kfree(full_path);
FreeXid(xid);
return rc;
}
static int
cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd)
{