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-rw-r--r--fs/cifs/dir.c108
1 files changed, 100 insertions, 8 deletions
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index d335269bd91cfe..8dfe717a332aba 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -48,6 +48,7 @@ build_path_from_dentry(struct dentry *direntry)
struct dentry *temp;
int namelen = 0;
char *full_path;
+ char dirsep = CIFS_DIR_SEP(CIFS_SB(direntry->d_sb));
if(direntry == NULL)
return NULL; /* not much we can do if dentry is freed and
@@ -74,7 +75,7 @@ cifs_bp_rename_retry:
if (namelen < 0) {
break;
} else {
- full_path[namelen] = '\\';
+ full_path[namelen] = dirsep;
strncpy(full_path + namelen + 1, temp->d_name.name,
temp->d_name.len);
cFYI(0, (" name: %s ", full_path + namelen));
@@ -183,6 +184,13 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
desiredAccess, CREATE_NOT_DIR,
&fileHandle, &oplock, buf, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if(rc == -EIO) {
+ /* old server, retry the open legacy style */
+ rc = SMBLegacyOpen(xid, pTcon, full_path, disposition,
+ desiredAccess, CREATE_NOT_DIR,
+ &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 {
@@ -208,7 +216,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
CIFS_MOUNT_MAP_SPECIAL_CHR);
}
else {
- /* BB implement via Windows security descriptors */
+ /* BB implement mode setting via Windows security descriptors */
/* eg CIFSSMBWinSetPerms(xid,pTcon,full_path,mode,-1,-1,local_nls);*/
/* could set r/o dos attribute if mode & 0222 == 0 */
}
@@ -225,10 +233,14 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
}
if (rc != 0) {
- cFYI(1,("Create worked but get_inode_info failed with rc = %d",
+ cFYI(1,
+ ("Create worked but get_inode_info failed rc = %d",
rc));
} else {
- direntry->d_op = &cifs_dentry_ops;
+ if (pTcon->nocase)
+ direntry->d_op = &cifs_ci_dentry_ops;
+ else
+ direntry->d_op = &cifs_dentry_ops;
d_instantiate(direntry, newinode);
}
if((nd->flags & LOOKUP_OPEN) == FALSE) {
@@ -302,8 +314,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode, dev_t dev
up(&direntry->d_sb->s_vfs_rename_sem);
if(full_path == NULL)
rc = -ENOMEM;
-
- if (full_path && (pTcon->ses->capabilities & CAP_UNIX)) {
+ else if (pTcon->ses->capabilities & CAP_UNIX) {
if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path,
mode,(__u64)current->euid,(__u64)current->egid,
@@ -321,10 +332,49 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode, dev_t dev
if(!rc) {
rc = cifs_get_inode_info_unix(&newinode, full_path,
inode->i_sb,xid);
- direntry->d_op = &cifs_dentry_ops;
+ if (pTcon->nocase)
+ direntry->d_op = &cifs_ci_dentry_ops;
+ else
+ direntry->d_op = &cifs_dentry_ops;
if(rc == 0)
d_instantiate(direntry, newinode);
}
+ } else {
+ if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
+ int oplock = 0;
+ u16 fileHandle;
+ FILE_ALL_INFO * buf;
+
+ cFYI(1,("sfu compat create special file"));
+
+ buf = kmalloc(sizeof(FILE_ALL_INFO),GFP_KERNEL);
+ if(buf == NULL) {
+ kfree(full_path);
+ FreeXid(xid);
+ return -ENOMEM;
+ }
+
+ rc = CIFSSMBOpen(xid, pTcon, full_path,
+ FILE_CREATE, /* fail if exists */
+ GENERIC_WRITE /* BB would
+ WRITE_OWNER | WRITE_DAC be better? */,
+ /* Create a file and set the
+ file attribute to SYSTEM */
+ CREATE_NOT_DIR | CREATE_OPTION_SPECIAL,
+ &fileHandle, &oplock, buf,
+ cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ if(!rc) {
+ /* BB Do not bother to decode buf since no
+ local inode yet to put timestamps in */
+ CIFSSMBClose(xid, pTcon, fileHandle);
+ d_drop(direntry);
+ }
+ kfree(buf);
+ /* add code here to set EAs */
+ }
}
kfree(full_path);
@@ -381,7 +431,10 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, struct name
parent_dir_inode->i_sb,xid);
if ((rc == 0) && (newInode != NULL)) {
- direntry->d_op = &cifs_dentry_ops;
+ if (pTcon->nocase)
+ direntry->d_op = &cifs_ci_dentry_ops;
+ else
+ direntry->d_op = &cifs_dentry_ops;
d_add(direntry, newInode);
/* since paths are not looked up by component - the parent directories are presumed to be good here */
@@ -440,3 +493,42 @@ struct dentry_operations cifs_dentry_ops = {
/* d_delete: cifs_d_delete, *//* not needed except for debugging */
/* no need for d_hash, d_compare, d_release, d_iput ... yet. BB confirm this BB */
};
+
+static int cifs_ci_hash(struct dentry *dentry, struct qstr *q)
+{
+ struct nls_table *codepage = CIFS_SB(dentry->d_inode->i_sb)->local_nls;
+ unsigned long hash;
+ int i;
+
+ hash = init_name_hash();
+ for (i = 0; i < q->len; i++)
+ hash = partial_name_hash(nls_tolower(codepage, q->name[i]),
+ hash);
+ q->hash = end_name_hash(hash);
+
+ return 0;
+}
+
+static int cifs_ci_compare(struct dentry *dentry, struct qstr *a,
+ struct qstr *b)
+{
+ struct nls_table *codepage = CIFS_SB(dentry->d_inode->i_sb)->local_nls;
+
+ if ((a->len == b->len) &&
+ (nls_strnicmp(codepage, a->name, b->name, a->len) == 0)) {
+ /*
+ * To preserve case, don't let an existing negative dentry's
+ * case take precedence. If a is not a negative dentry, this
+ * should have no side effects
+ */
+ memcpy((unsigned char *)a->name, b->name, a->len);
+ return 0;
+ }
+ return 1;
+}
+
+struct dentry_operations cifs_ci_dentry_ops = {
+ .d_revalidate = cifs_d_revalidate,
+ .d_hash = cifs_ci_hash,
+ .d_compare = cifs_ci_compare,
+};
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-29 15:09:43 +0000