aboutsummaryrefslogtreecommitdiffstats
path: root/fs/ncpfs
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ncpfs')
-rw-r--r--fs/ncpfs/dir.c221
-rw-r--r--fs/ncpfs/file.c25
-rw-r--r--fs/ncpfs/inode.c41
-rw-r--r--fs/ncpfs/ioctl.c470
-rw-r--r--fs/ncpfs/ncplib_kernel.c101
-rw-r--r--fs/ncpfs/ncplib_kernel.h15
-rw-r--r--fs/ncpfs/ncpsign_kernel.c10
-rw-r--r--fs/ncpfs/sock.c1
8 files changed, 484 insertions, 400 deletions
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index 9578cbe..aac8832 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -95,6 +95,34 @@ const struct dentry_operations ncp_root_dentry_operations =
};
+#define ncp_namespace(i) (NCP_SERVER(i)->name_space[NCP_FINFO(i)->volNumber])
+
+static inline int ncp_preserve_entry_case(struct inode *i, __u32 nscreator)
+{
+#ifdef CONFIG_NCPFS_SMALLDOS
+ int ns = ncp_namespace(i);
+
+ if ((ns == NW_NS_DOS)
+#ifdef CONFIG_NCPFS_OS2_NS
+ || ((ns == NW_NS_OS2) && (nscreator == NW_NS_DOS))
+#endif /* CONFIG_NCPFS_OS2_NS */
+ )
+ return 0;
+#endif /* CONFIG_NCPFS_SMALLDOS */
+ return 1;
+}
+
+#define ncp_preserve_case(i) (ncp_namespace(i) != NW_NS_DOS)
+
+static inline int ncp_case_sensitive(struct dentry *dentry)
+{
+#ifdef CONFIG_NCPFS_NFS_NS
+ return ncp_namespace(dentry->d_inode) == NW_NS_NFS;
+#else
+ return 0;
+#endif /* CONFIG_NCPFS_NFS_NS */
+}
+
/*
* Note: leave the hash unchanged if the directory
* is case-sensitive.
@@ -102,13 +130,12 @@ const struct dentry_operations ncp_root_dentry_operations =
static int
ncp_hash_dentry(struct dentry *dentry, struct qstr *this)
{
- struct nls_table *t;
- unsigned long hash;
- int i;
-
- t = NCP_IO_TABLE(dentry);
+ if (!ncp_case_sensitive(dentry)) {
+ struct nls_table *t;
+ unsigned long hash;
+ int i;
- if (!ncp_case_sensitive(dentry->d_inode)) {
+ t = NCP_IO_TABLE(dentry);
hash = init_name_hash();
for (i=0; i<this->len ; i++)
hash = partial_name_hash(ncp_tolower(t, this->name[i]),
@@ -124,7 +151,7 @@ ncp_compare_dentry(struct dentry *dentry, struct qstr *a, struct qstr *b)
if (a->len != b->len)
return 1;
- if (ncp_case_sensitive(dentry->d_inode))
+ if (ncp_case_sensitive(dentry))
return strncmp(a->name, b->name, a->len);
return ncp_strnicmp(NCP_IO_TABLE(dentry), a->name, b->name, a->len);
@@ -266,7 +293,7 @@ leave_me:;
static int
-__ncp_lookup_validate(struct dentry *dentry)
+ncp_lookup_validate(struct dentry *dentry, struct nameidata *nd)
{
struct ncp_server *server;
struct dentry *parent;
@@ -283,9 +310,6 @@ __ncp_lookup_validate(struct dentry *dentry)
server = NCP_SERVER(dir);
- if (!ncp_conn_valid(server))
- goto finished;
-
/*
* Inspired by smbfs:
* The default validation is based on dentry age:
@@ -304,8 +328,11 @@ __ncp_lookup_validate(struct dentry *dentry)
if (ncp_is_server_root(dir)) {
res = ncp_io2vol(server, __name, &len, dentry->d_name.name,
dentry->d_name.len, 1);
- if (!res)
+ if (!res) {
res = ncp_lookup_volume(server, __name, &(finfo.i));
+ if (!res)
+ ncp_update_known_namespace(server, finfo.i.volNumber, NULL);
+ }
} else {
res = ncp_io2vol(server, __name, &len, dentry->d_name.name,
dentry->d_name.len, !ncp_preserve_case(dir));
@@ -320,13 +347,17 @@ __ncp_lookup_validate(struct dentry *dentry)
* what we remember, it's not valid any more.
*/
if (!res) {
- if (finfo.i.dirEntNum == NCP_FINFO(dentry->d_inode)->dirEntNum) {
+ struct inode *inode = dentry->d_inode;
+
+ mutex_lock(&inode->i_mutex);
+ if (finfo.i.dirEntNum == NCP_FINFO(inode)->dirEntNum) {
ncp_new_dentry(dentry);
val=1;
} else
DDPRINTK("ncp_lookup_validate: found, but dirEntNum changed\n");
- ncp_update_inode2(dentry->d_inode, &finfo);
+ ncp_update_inode2(inode, &finfo);
+ mutex_unlock(&inode->i_mutex);
}
finished:
@@ -335,16 +366,6 @@ finished:
return val;
}
-static int
-ncp_lookup_validate(struct dentry * dentry, struct nameidata *nd)
-{
- int res;
- lock_kernel();
- res = __ncp_lookup_validate(dentry);
- unlock_kernel();
- return res;
-}
-
static struct dentry *
ncp_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos)
{
@@ -411,8 +432,6 @@ static int ncp_readdir(struct file *filp, void *dirent, filldir_t filldir)
int result, mtime_valid = 0;
time_t mtime = 0;
- lock_kernel();
-
ctl.page = NULL;
ctl.cache = NULL;
@@ -421,6 +440,7 @@ static int ncp_readdir(struct file *filp, void *dirent, filldir_t filldir)
(int) filp->f_pos);
result = -EIO;
+ /* Do not generate '.' and '..' when server is dead. */
if (!ncp_conn_valid(server))
goto out;
@@ -532,6 +552,12 @@ read_really:
ctl.head.end = ctl.fpos - 1;
ctl.head.eof = ctl.valid;
finished:
+ if (ctl.page) {
+ kunmap(ctl.page);
+ SetPageUptodate(ctl.page);
+ unlock_page(ctl.page);
+ page_cache_release(ctl.page);
+ }
if (page) {
cache->head = ctl.head;
kunmap(page);
@@ -539,23 +565,17 @@ finished:
unlock_page(page);
page_cache_release(page);
}
- if (ctl.page) {
- kunmap(ctl.page);
- SetPageUptodate(ctl.page);
- unlock_page(ctl.page);
- page_cache_release(ctl.page);
- }
out:
- unlock_kernel();
return result;
}
static int
ncp_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
- struct ncp_cache_control *ctrl, struct ncp_entry_info *entry)
+ struct ncp_cache_control *ctrl, struct ncp_entry_info *entry,
+ int inval_childs)
{
struct dentry *newdent, *dentry = filp->f_path.dentry;
- struct inode *newino, *inode = dentry->d_inode;
+ struct inode *dir = dentry->d_inode;
struct ncp_cache_control ctl = *ctrl;
struct qstr qname;
int valid = 0;
@@ -564,9 +584,9 @@ ncp_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
__u8 __name[NCP_MAXPATHLEN + 1];
qname.len = sizeof(__name);
- if (ncp_vol2io(NCP_SERVER(inode), __name, &qname.len,
+ if (ncp_vol2io(NCP_SERVER(dir), __name, &qname.len,
entry->i.entryName, entry->i.nameLen,
- !ncp_preserve_entry_case(inode, entry->i.NSCreator)))
+ !ncp_preserve_entry_case(dir, entry->i.NSCreator)))
return 1; /* I'm not sure */
qname.name = __name;
@@ -584,22 +604,64 @@ ncp_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
goto end_advance;
} else {
hashed = 1;
- memcpy((char *) newdent->d_name.name, qname.name,
- newdent->d_name.len);
+
+ /* If case sensitivity changed for this volume, all entries below this one
+ should be thrown away. This entry itself is not affected, as its case
+ sensitivity is controlled by its own parent. */
+ if (inval_childs)
+ shrink_dcache_parent(newdent);
+
+ /*
+ * It is not as dangerous as it looks. NetWare's OS2 namespace is
+ * case preserving yet case insensitive. So we update dentry's name
+ * as received from server. We found dentry via d_lookup with our
+ * hash, so we know that hash does not change, and so replacing name
+ * should be reasonably safe.
+ */
+ if (qname.len == newdent->d_name.len &&
+ memcmp(newdent->d_name.name, qname.name, newdent->d_name.len)) {
+ struct inode *inode = newdent->d_inode;
+
+ /*
+ * Inside ncpfs all uses of d_name are either for debugging,
+ * or on functions which acquire inode mutex (mknod, creat,
+ * lookup). So grab i_mutex here, to be sure. d_path
+ * uses dcache_lock when generating path, so we should too.
+ * And finally d_compare is protected by dentry's d_lock, so
+ * here we go.
+ */
+ if (inode)
+ mutex_lock(&inode->i_mutex);
+ spin_lock(&dcache_lock);
+ spin_lock(&newdent->d_lock);
+ memcpy((char *) newdent->d_name.name, qname.name,
+ newdent->d_name.len);
+ spin_unlock(&newdent->d_lock);
+ spin_unlock(&dcache_lock);
+ if (inode)
+ mutex_unlock(&inode->i_mutex);
+ }
}
if (!newdent->d_inode) {
+ struct inode *inode;
+
entry->opened = 0;
- entry->ino = iunique(inode->i_sb, 2);
- newino = ncp_iget(inode->i_sb, entry);
- if (newino) {
+ entry->ino = iunique(dir->i_sb, 2);
+ inode = ncp_iget(dir->i_sb, entry);
+ if (inode) {
newdent->d_op = &ncp_dentry_operations;
- d_instantiate(newdent, newino);
+ d_instantiate(newdent, inode);
if (!hashed)
d_rehash(newdent);
}
- } else
- ncp_update_inode2(newdent->d_inode, entry);
+ } else {
+ struct inode *inode = newdent->d_inode;
+
+ mutex_lock(&inode->i_mutex);
+ ncp_update_inode2(inode, entry);
+ mutex_unlock(&inode->i_mutex);
+ }
if (newdent->d_inode) {
ino = newdent->d_inode->i_ino;
@@ -617,7 +679,7 @@ ncp_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
ctl.cache = NULL;
ctl.idx -= NCP_DIRCACHE_SIZE;
ctl.ofs += 1;
- ctl.page = grab_cache_page(&inode->i_data, ctl.ofs);
+ ctl.page = grab_cache_page(&dir->i_data, ctl.ofs);
if (ctl.page)
ctl.cache = kmap(ctl.page);
}
@@ -633,7 +695,7 @@ end_advance:
if (!ino)
ino = find_inode_number(dentry, &qname);
if (!ino)
- ino = iunique(inode->i_sb, 2);
+ ino = iunique(dir->i_sb, 2);
ctl.filled = filldir(dirent, qname.name, qname.len,
filp->f_pos, ino, DT_UNKNOWN);
if (!ctl.filled)
@@ -660,6 +722,7 @@ ncp_read_volume_list(struct file *filp, void *dirent, filldir_t filldir,
(unsigned long) filp->f_pos);
for (i = 0; i < NCP_NUMBER_OF_VOLUMES; i++) {
+ int inval_dentry;
if (ncp_get_volume_info_with_number(server, i, &info) != 0)
return;
@@ -675,8 +738,9 @@ ncp_read_volume_list(struct file *filp, void *dirent, filldir_t filldir,
info.volume_name);
continue;
}
+ inval_dentry = ncp_update_known_namespace(server, entry.i.volNumber, NULL);
entry.volume = entry.i.volNumber;
- if (!ncp_fill_cache(filp, dirent, filldir, ctl, &entry))
+ if (!ncp_fill_cache(filp, dirent, filldir, ctl, &entry, inval_dentry))
return;
}
}
@@ -739,7 +803,7 @@ ncp_do_readdir(struct file *filp, void *dirent, filldir_t filldir,
rpl += onerpl;
rpls -= onerpl;
entry.volume = entry.i.volNumber;
- if (!ncp_fill_cache(filp, dirent, filldir, ctl, &entry))
+ if (!ncp_fill_cache(filp, dirent, filldir, ctl, &entry, 0))
break;
}
} while (more);
@@ -775,17 +839,19 @@ int ncp_conn_logged_in(struct super_block *sb)
if (dent) {
struct inode* ino = dent->d_inode;
if (ino) {
+ ncp_update_known_namespace(server, volNumber, NULL);
NCP_FINFO(ino)->volNumber = volNumber;
NCP_FINFO(ino)->dirEntNum = dirEntNum;
NCP_FINFO(ino)->DosDirNum = DosDirNum;
+ result = 0;
} else {
DPRINTK("ncpfs: sb->s_root->d_inode == NULL!\n");
}
} else {
DPRINTK("ncpfs: sb->s_root == NULL!\n");
}
- }
- result = 0;
+ } else
+ result = 0;
out:
return result;
@@ -799,7 +865,6 @@ static struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, struc
int error, res, len;
__u8 __name[NCP_MAXPATHLEN + 1];
- lock_kernel();
error = -EIO;
if (!ncp_conn_valid(server))
goto finished;
@@ -813,6 +878,8 @@ static struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, struc
dentry->d_name.len, 1);
if (!res)
res = ncp_lookup_volume(server, __name, &(finfo.i));
+ if (!res)
+ ncp_update_known_namespace(server, finfo.i.volNumber, NULL);
} else {
res = ncp_io2vol(server, __name, &len, dentry->d_name.name,
dentry->d_name.len, !ncp_preserve_case(dir));
@@ -846,7 +913,6 @@ add_entry:
finished:
PPRINTK("ncp_lookup: result=%d\n", error);
- unlock_kernel();
return ERR_PTR(error);
}
@@ -887,11 +953,6 @@ int ncp_create_new(struct inode *dir, struct dentry *dentry, int mode,
PPRINTK("ncp_create_new: creating %s/%s, mode=%x\n",
dentry->d_parent->d_name.name, dentry->d_name.name, mode);
- error = -EIO;
- lock_kernel();
- if (!ncp_conn_valid(server))
- goto out;
-
ncp_age_dentry(server, dentry);
len = sizeof(__name);
error = ncp_io2vol(server, __name, &len, dentry->d_name.name,
@@ -917,6 +978,8 @@ int ncp_create_new(struct inode *dir, struct dentry *dentry, int mode,
if (result) {
if (result == 0x87)
error = -ENAMETOOLONG;
+ else if (result < 0)
+ error = result;
DPRINTK("ncp_create: %s/%s failed\n",
dentry->d_parent->d_name.name, dentry->d_name.name);
goto out;
@@ -935,7 +998,6 @@ int ncp_create_new(struct inode *dir, struct dentry *dentry, int mode,
error = ncp_instantiate(dir, dentry, &finfo);
out:
- unlock_kernel();
return error;
}
@@ -955,11 +1017,6 @@ static int ncp_mkdir(struct inode *dir, struct dentry *dentry, int mode)
DPRINTK("ncp_mkdir: making %s/%s\n",
dentry->d_parent->d_name.name, dentry->d_name.name);
- error = -EIO;
- lock_kernel();
- if (!ncp_conn_valid(server))
- goto out;
-
ncp_age_dentry(server, dentry);
len = sizeof(__name);
error = ncp_io2vol(server, __name, &len, dentry->d_name.name,
@@ -967,12 +1024,11 @@ static int ncp_mkdir(struct inode *dir, struct dentry *dentry, int mode)
if (error)
goto out;
- error = -EACCES;
- if (ncp_open_create_file_or_subdir(server, dir, __name,
+ error = ncp_open_create_file_or_subdir(server, dir, __name,
OC_MODE_CREATE, aDIR,
cpu_to_le16(0xffff),
- &finfo) == 0)
- {
+ &finfo);
+ if (error == 0) {
if (ncp_is_nfs_extras(server, finfo.volume)) {
mode |= S_IFDIR;
finfo.i.nfs.mode = mode;
@@ -983,9 +1039,10 @@ static int ncp_mkdir(struct inode *dir, struct dentry *dentry, int mode)
goto out;
}
error = ncp_instantiate(dir, dentry, &finfo);
+ } else if (error > 0) {
+ error = -EACCES;
}
out:
- unlock_kernel();
return error;
}
@@ -998,11 +1055,6 @@ static int ncp_rmdir(struct inode *dir, struct dentry *dentry)
DPRINTK("ncp_rmdir: removing %s/%s\n",
dentry->d_parent->d_name.name, dentry->d_name.name);
- error = -EIO;
- lock_kernel();
- if (!ncp_conn_valid(server))
- goto out;
-
error = -EBUSY;
if (!d_unhashed(dentry))
goto out;
@@ -1036,11 +1088,10 @@ static int ncp_rmdir(struct inode *dir, struct dentry *dentry)
error = -ENOENT;
break;
default:
- error = -EACCES;
+ error = result < 0 ? result : -EACCES;
break;
}
out:
- unlock_kernel();
return error;
}
@@ -1050,15 +1101,10 @@ static int ncp_unlink(struct inode *dir, struct dentry *dentry)
struct ncp_server *server;
int error;
- lock_kernel();
server = NCP_SERVER(dir);
DPRINTK("ncp_unlink: unlinking %s/%s\n",
dentry->d_parent->d_name.name, dentry->d_name.name);
- error = -EIO;
- if (!ncp_conn_valid(server))
- goto out;
-
/*
* Check whether to close the file ...
*/
@@ -1097,12 +1143,9 @@ static int ncp_unlink(struct inode *dir, struct dentry *dentry)
error = -ENOENT;
break;
default:
- error = -EACCES;
+ error = error < 0 ? error : -EACCES;
break;
}
-
-out:
- unlock_kernel();
return error;
}
@@ -1118,11 +1161,6 @@ static int ncp_rename(struct inode *old_dir, struct dentry *old_dentry,
old_dentry->d_parent->d_name.name, old_dentry->d_name.name,
new_dentry->d_parent->d_name.name, new_dentry->d_name.name);
- error = -EIO;
- lock_kernel();
- if (!ncp_conn_valid(server))
- goto out;
-
ncp_age_dentry(server, old_dentry);
ncp_age_dentry(server, new_dentry);
@@ -1161,11 +1199,10 @@ static int ncp_rename(struct inode *old_dir, struct dentry *old_dentry,
error = -ENOENT;
break;
default:
- error = -EACCES;
+ error = error < 0 ? error : -EACCES;
break;
}
out:
- unlock_kernel();
return error;
}
diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c
index 3639cc5..6c754f7 100644
--- a/fs/ncpfs/file.c
+++ b/fs/ncpfs/file.c
@@ -113,9 +113,6 @@ ncp_file_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
DPRINTK("ncp_file_read: enter %s/%s\n",
dentry->d_parent->d_name.name, dentry->d_name.name);
- if (!ncp_conn_valid(NCP_SERVER(inode)))
- return -EIO;
-
pos = *ppos;
if ((ssize_t) count < 0) {
@@ -192,13 +189,11 @@ ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t *
DPRINTK("ncp_file_write: enter %s/%s\n",
dentry->d_parent->d_name.name, dentry->d_name.name);
- if (!ncp_conn_valid(NCP_SERVER(inode)))
- return -EIO;
if ((ssize_t) count < 0)
return -EINVAL;
pos = *ppos;
if (file->f_flags & O_APPEND) {
- pos = inode->i_size;
+ pos = i_size_read(inode);
}
if (pos + count > MAX_NON_LFS && !(file->f_flags&O_LARGEFILE)) {
@@ -264,8 +259,11 @@ ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t *
*ppos = pos;
- if (pos > inode->i_size) {
- inode->i_size = pos;
+ if (pos > i_size_read(inode)) {
+ mutex_lock(&inode->i_mutex);
+ if (pos > i_size_read(inode))
+ i_size_write(inode, pos);
+ mutex_unlock(&inode->i_mutex);
}
DPRINTK("ncp_file_write: exit %s/%s\n",
dentry->d_parent->d_name.name, dentry->d_name.name);
@@ -281,18 +279,9 @@ static int ncp_release(struct inode *inode, struct file *file) {
return 0;
}
-static loff_t ncp_remote_llseek(struct file *file, loff_t offset, int origin)
-{
- loff_t ret;
- lock_kernel();
- ret = generic_file_llseek_unlocked(file, offset, origin);
- unlock_kernel();
- return ret;
-}
-
const struct file_operations ncp_file_operations =
{
- .llseek = ncp_remote_llseek,
+ .llseek = generic_file_llseek,
.read = ncp_file_read,
.write = ncp_file_write,
.unlocked_ioctl = ncp_ioctl,
diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c
index b4de38c..5f4e58d 100644
--- a/fs/ncpfs/inode.c
+++ b/fs/ncpfs/inode.c
@@ -139,7 +139,7 @@ static void ncp_update_dates(struct inode *inode, struct nw_info_struct *nwi)
inode->i_mode = nwi->nfs.mode;
}
- inode->i_blocks = (inode->i_size + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT;
+ inode->i_blocks = (i_size_read(inode) + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT;
inode->i_mtime.tv_sec = ncp_date_dos2unix(nwi->modifyTime, nwi->modifyDate);
inode->i_ctime.tv_sec = ncp_date_dos2unix(nwi->creationTime, nwi->creationDate);
@@ -158,18 +158,21 @@ static void ncp_update_attrs(struct inode *inode, struct ncp_entry_info *nwinfo)
inode->i_mode = server->m.dir_mode;
/* for directories dataStreamSize seems to be some
Object ID ??? */
- inode->i_size = NCP_BLOCK_SIZE;
+ i_size_write(inode, NCP_BLOCK_SIZE);
} else {
+ u32 size;
+
inode->i_mode = server->m.file_mode;
- inode->i_size = le32_to_cpu(nwi->dataStreamSize);
+ size = le32_to_cpu(nwi->dataStreamSize);
+ i_size_write(inode, size);
#ifdef CONFIG_NCPFS_EXTRAS
if ((server->m.flags & (NCP_MOUNT_EXTRAS|NCP_MOUNT_SYMLINKS))
&& (nwi->attributes & aSHARED)) {
switch (nwi->attributes & (aHIDDEN|aSYSTEM)) {
case aHIDDEN:
if (server->m.flags & NCP_MOUNT_SYMLINKS) {
- if (/* (inode->i_size >= NCP_MIN_SYMLINK_SIZE)
- && */ (inode->i_size <= NCP_MAX_SYMLINK_SIZE)) {
+ if (/* (size >= NCP_MIN_SYMLINK_SIZE)
+ && */ (size <= NCP_MAX_SYMLINK_SIZE)) {
inode->i_mode = (inode->i_mode & ~S_IFMT) | S_IFLNK;
NCP_FINFO(inode)->flags |= NCPI_KLUDGE_SYMLINK;
break;
@@ -208,7 +211,7 @@ void ncp_update_inode2(struct inode* inode, struct ncp_entry_info *nwinfo)
}
/*
- * Fill in the inode based on the ncp_entry_info structure.
+ * Fill in the inode based on the ncp_entry_info structure. Used only for brand new inodes.
*/
static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo)
{
@@ -254,6 +257,7 @@ ncp_iget(struct super_block *sb, struct ncp_entry_info *info)
if (inode) {
atomic_set(&NCP_FINFO(inode)->opened, info->opened);
+ inode->i_mapping->backing_dev_info = sb->s_bdi;
inode->i_ino = info->ino;
ncp_set_attr(inode, info);
if (S_ISREG(inode->i_mode)) {
@@ -565,10 +569,12 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
/* server->conn_status = 0; */
/* server->root_dentry = NULL; */
/* server->root_setuped = 0; */
+ mutex_init(&server->root_setup_lock);
#ifdef CONFIG_NCPFS_PACKET_SIGNING
/* server->sign_wanted = 0; */
/* server->sign_active = 0; */
#endif
+ init_rwsem(&server->auth_rwsem);
server->auth.auth_type = NCP_AUTH_NONE;
/* server->auth.object_name_len = 0; */
/* server->auth.object_name = NULL; */
@@ -593,7 +599,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
server->nls_io = load_nls_default();
#endif /* CONFIG_NCPFS_NLS */
- server->dentry_ttl = 0; /* no caching */
+ atomic_set(&server->dentry_ttl, 0); /* no caching */
INIT_LIST_HEAD(&server->tx.requests);
mutex_init(&server->rcv.creq_mutex);
@@ -658,8 +664,10 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
goto out_disconnect;
}
}
+ ncp_lock_server(server);
if (options & 2)
server->sign_wanted = 1;
+ ncp_unlock_server(server);
}
else
#endif /* CONFIG_NCPFS_PACKET_SIGNING */
@@ -720,6 +728,9 @@ out_nls:
unload_nls(server->nls_io);
unload_nls(server->nls_vol);
#endif
+ mutex_destroy(&server->rcv.creq_mutex);
+ mutex_destroy(&server->root_setup_lock);
+ mutex_destroy(&server->mutex);
out_fput2:
if (server->info_filp)
fput(server->info_filp);
@@ -743,8 +754,6 @@ static void ncp_put_super(struct super_block *sb)
{
struct ncp_server *server = NCP_SBP(sb);
- lock_kernel();
-
ncp_lock_server(server);
ncp_disconnect(server);
ncp_unlock_server(server);
@@ -756,6 +765,9 @@ static void ncp_put_super(struct super_block *sb)
unload_nls(server->nls_vol);
unload_nls(server->nls_io);
#endif /* CONFIG_NCPFS_NLS */
+ mutex_destroy(&server->rcv.creq_mutex);
+ mutex_destroy(&server->root_setup_lock);
+ mutex_destroy(&server->mutex);
if (server->info_filp)
fput(server->info_filp);
@@ -771,8 +783,6 @@ static void ncp_put_super(struct super_block *sb)
vfree(server->packet);
sb->s_fs_info = NULL;
kfree(server);
-
- unlock_kernel();
}
static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
@@ -851,10 +861,8 @@ int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
result = -EIO;
- lock_kernel();
-
server = NCP_SERVER(inode);
- if ((!server) || !ncp_conn_valid(server))
+ if (!server) /* How this could happen? */
goto out;
/* ageing the dentry to force validation */
@@ -981,8 +989,6 @@ int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),
inode, info_mask, &info);
if (result != 0) {
- result = -EACCES;
-
if (info_mask == (DM_CREATE_TIME | DM_CREATE_DATE)) {
/* NetWare seems not to allow this. I
do not know why. So, just tell the
@@ -1005,7 +1011,8 @@ int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
mark_inode_dirty(inode);
out:
- unlock_kernel();
+ if (result > 0)
+ result = -EACCES;
return result;
}
diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c
index 84a8cfc..c2a1f9a 100644
--- a/fs/ncpfs/ioctl.c
+++ b/fs/ncpfs/ioctl.c
@@ -35,16 +35,11 @@
#define NCP_PACKET_SIZE_INTERNAL 65536
static int
-ncp_get_fs_info(struct ncp_server * server, struct file *file,
+ncp_get_fs_info(struct ncp_server * server, struct inode *inode,
struct ncp_fs_info __user *arg)
{
- struct inode *inode = file->f_path.dentry->d_inode;
struct ncp_fs_info info;
- if (file_permission(file, MAY_WRITE) != 0
- && current_uid() != server->m.mounted_uid)
- return -EACCES;
-
if (copy_from_user(&info, arg, sizeof(info)))
return -EFAULT;
@@ -65,16 +60,11 @@ ncp_get_fs_info(struct ncp_server * server, struct file *file,
}
static int
-ncp_get_fs_info_v2(struct ncp_server * server, struct file *file,
+ncp_get_fs_info_v2(struct ncp_server * server, struct inode *inode,
struct ncp_fs_info_v2 __user * arg)
{
- struct inode *inode = file->f_path.dentry->d_inode;
struct ncp_fs_info_v2 info2;
- if (file_permission(file, MAY_WRITE) != 0
- && current_uid() != server->m.mounted_uid)
- return -EACCES;
-
if (copy_from_user(&info2, arg, sizeof(info2)))
return -EFAULT;
@@ -136,16 +126,11 @@ struct compat_ncp_privatedata_ioctl
#define NCP_IOC_SETPRIVATEDATA_32 _IOR('n', 10, struct compat_ncp_privatedata_ioctl)
static int
-ncp_get_compat_fs_info_v2(struct ncp_server * server, struct file *file,
+ncp_get_compat_fs_info_v2(struct ncp_server * server, struct inode *inode,
struct compat_ncp_fs_info_v2 __user * arg)
{
- struct inode *inode = file->f_path.dentry->d_inode;
struct compat_ncp_fs_info_v2 info2;
- if (file_permission(file, MAY_WRITE) != 0
- && current_uid() != server->m.mounted_uid)
- return -EACCES;
-
if (copy_from_user(&info2, arg, sizeof(info2)))
return -EFAULT;
@@ -182,11 +167,8 @@ ncp_set_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg)
struct nls_table *iocharset;
struct nls_table *oldset_io;
struct nls_table *oldset_cp;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- if (server->root_setuped)
- return -EBUSY;
+ int utf8;
+ int err;
if (copy_from_user(&user, arg, sizeof(user)))
return -EFAULT;
@@ -206,28 +188,40 @@ ncp_set_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg)
user.iocharset[NCP_IOCSNAME_LEN] = 0;
if (!user.iocharset[0] || !strcmp(user.iocharset, "default")) {
iocharset = load_nls_default();
- NCP_CLR_FLAG(server, NCP_FLAG_UTF8);
+ utf8 = 0;
} else if (!strcmp(user.iocharset, "utf8")) {
iocharset = load_nls_default();
- NCP_SET_FLAG(server, NCP_FLAG_UTF8);
+ utf8 = 1;
} else {
iocharset = load_nls(user.iocharset);
if (!iocharset) {
unload_nls(codepage);
return -EBADRQC;
}
- NCP_CLR_FLAG(server, NCP_FLAG_UTF8);
+ utf8 = 0;
}
- oldset_cp = server->nls_vol;
- server->nls_vol = codepage;
- oldset_io = server->nls_io;
- server->nls_io = iocharset;
-
+ mutex_lock(&server->root_setup_lock);
+ if (server->root_setuped) {
+ oldset_cp = codepage;
+ oldset_io = iocharset;
+ err = -EBUSY;
+ } else {
+ if (utf8)
+ NCP_SET_FLAG(server, NCP_FLAG_UTF8);
+ else
+ NCP_CLR_FLAG(server, NCP_FLAG_UTF8);
+ oldset_cp = server->nls_vol;
+ server->nls_vol = codepage;
+ oldset_io = server->nls_io;
+ server->nls_io = iocharset;
+ err = 0;
+ }
+ mutex_unlock(&server->root_setup_lock);
unload_nls(oldset_cp);
unload_nls(oldset_io);
- return 0;
+ return err;
}
static int
@@ -237,6 +231,7 @@ ncp_get_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg)
int len;
memset(&user, 0, sizeof(user));
+ mutex_lock(&server->root_setup_lock);
if (server->nls_vol && server->nls_vol->charset) {
len = strlen(server->nls_vol->charset);
if (len > NCP_IOCSNAME_LEN)
@@ -254,6 +249,7 @@ ncp_get_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg)
strncpy(user.iocharset, server->nls_io->charset, len);
user.iocharset[len] = 0;
}
+ mutex_unlock(&server->root_setup_lock);
if (copy_to_user(arg, &user, sizeof(user)))
return -EFAULT;
@@ -261,25 +257,19 @@ ncp_get_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg)
}
#endif /* CONFIG_NCPFS_NLS */
-static long __ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+static long __ncp_ioctl(struct inode *inode, unsigned int cmd, unsigned long arg)
{
- struct inode *inode = filp->f_dentry->d_inode;
struct ncp_server *server = NCP_SERVER(inode);
int result;
struct ncp_ioctl_request request;
char* bouncebuffer;
void __user *argp = (void __user *)arg;
- uid_t uid = current_uid();
switch (cmd) {
#ifdef CONFIG_COMPAT
case NCP_IOC_NCPREQUEST_32:
#endif
case NCP_IOC_NCPREQUEST:
- if (file_permission(filp, MAY_WRITE) != 0
- && uid != server->m.mounted_uid)
- return -EACCES;
-
#ifdef CONFIG_COMPAT
if (cmd == NCP_IOC_NCPREQUEST_32) {
struct compat_ncp_ioctl_request request32;
@@ -314,7 +304,7 @@ static long __ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
server->current_size = request.size;
memcpy(server->packet, bouncebuffer, request.size);
- result = ncp_request2(server, request.function,
+ result = ncp_request2(server, request.function,
bouncebuffer, NCP_PACKET_SIZE_INTERNAL);
if (result < 0)
result = -EIO;
@@ -331,69 +321,69 @@ static long __ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
case NCP_IOC_CONN_LOGGED_IN:
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
if (!(server->m.int_flags & NCP_IMOUNT_LOGGEDIN_POSSIBLE))
return -EINVAL;
+ mutex_lock(&server->root_setup_lock);
if (server->root_setuped)
- return -EBUSY;
- server->root_setuped = 1;
- return ncp_conn_logged_in(inode->i_sb);
+ result = -EBUSY;
+ else {
+ result = ncp_conn_logged_in(inode->i_sb);
+ if (result == 0)
+ server->root_setuped = 1;
+ }
+ mutex_unlock(&server->root_setup_lock);
+ return result;
case NCP_IOC_GET_FS_INFO:
- return ncp_get_fs_info(server, filp, argp);
+ return ncp_get_fs_info(server, inode, argp);
case NCP_IOC_GET_FS_INFO_V2:
- return ncp_get_fs_info_v2(server, filp, argp);
+ return ncp_get_fs_info_v2(server, inode, argp);
#ifdef CONFIG_COMPAT
case NCP_IOC_GET_FS_INFO_V2_32:
- return ncp_get_compat_fs_info_v2(server, filp, argp);
+ return ncp_get_compat_fs_info_v2(server, inode, argp);
#endif
/* we have too many combinations of CONFIG_COMPAT,
* CONFIG_64BIT and CONFIG_UID16, so just handle
* any of the possible ioctls */
case NCP_IOC_GETMOUNTUID16:
- case NCP_IOC_GETMOUNTUID32:
- case NCP_IOC_GETMOUNTUID64:
- if (file_permission(filp, MAY_READ) != 0
- && uid != server->m.mounted_uid)
- return -EACCES;
-
- if (cmd == NCP_IOC_GETMOUNTUID16) {
+ {
u16 uid;
+
SET_UID(uid, server->m.mounted_uid);
if (put_user(uid, (u16 __user *)argp))
return -EFAULT;
- } else if (cmd == NCP_IOC_GETMOUNTUID32) {
- if (put_user(server->m.mounted_uid,
- (u32 __user *)argp))
- return -EFAULT;
- } else {
- if (put_user(server->m.mounted_uid,
- (u64 __user *)argp))
- return -EFAULT;
+ return 0;
}
+ case NCP_IOC_GETMOUNTUID32:
+ if (put_user(server->m.mounted_uid,
+ (u32 __user *)argp))
+ return -EFAULT;
+ return 0;
+ case NCP_IOC_GETMOUNTUID64:
+ if (put_user(server->m.mounted_uid,
+ (u64 __user *)argp))
+ return -EFAULT;
return 0;
case NCP_IOC_GETROOT:
{
struct ncp_setroot_ioctl sr;
- if (file_permission(filp, MAY_READ) != 0
- && uid != server->m.mounted_uid)
- return -EACCES;
-
+ result = -EACCES;
+ mutex_lock(&server->root_setup_lock);
if (server->m.mounted_vol[0]) {
struct dentry* dentry = inode->i_sb->s_root;
if (dentry) {
struct inode* s_inode = dentry->d_inode;
-
+
if (s_inode) {
sr.volNumber = NCP_FINFO(s_inode)->volNumber;
sr.dirEntNum = NCP_FINFO(s_inode)->dirEntNum;
sr.namespace = server->name_space[sr.volNumber];
+ result = 0;
} else
DPRINTK("ncpfs: s_root->d_inode==NULL\n");
} else
@@ -402,10 +392,12 @@ static long __ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
sr.volNumber = -1;
sr.namespace = 0;
sr.dirEntNum = 0;
+ result = 0;
}
- if (copy_to_user(argp, &sr, sizeof(sr)))
- return -EFAULT;
- return 0;
+ mutex_unlock(&server->root_setup_lock);
+ if (!result && copy_to_user(argp, &sr, sizeof(sr)))
+ result = -EFAULT;
+ return result;
}
case NCP_IOC_SETROOT:
@@ -416,103 +408,114 @@ static long __ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
__le32 dosde;
struct dentry* dentry;
- if (!capable(CAP_SYS_ADMIN))
- {
- return -EACCES;
- }
- if (server->root_setuped) return -EBUSY;
if (copy_from_user(&sr, argp, sizeof(sr)))
return -EFAULT;
- if (sr.volNumber < 0) {
- server->m.mounted_vol[0] = 0;
- vnum = NCP_NUMBER_OF_VOLUMES;
- de = 0;
- dosde = 0;
- } else if (sr.volNumber >= NCP_NUMBER_OF_VOLUMES) {
- return -EINVAL;
- } else if (ncp_mount_subdir(server, sr.volNumber,
- sr.namespace, sr.dirEntNum,
- &vnum, &de, &dosde)) {
- return -ENOENT;
- }
-
- dentry = inode->i_sb->s_root;
- server->root_setuped = 1;
- if (dentry) {
- struct inode* s_inode = dentry->d_inode;
-
- if (s_inode) {
- NCP_FINFO(s_inode)->volNumber = vnum;
- NCP_FINFO(s_inode)->dirEntNum = de;
- NCP_FINFO(s_inode)->DosDirNum = dosde;
+ mutex_lock(&server->root_setup_lock);
+ if (server->root_setuped)
+ result = -EBUSY;
+ else {
+ if (sr.volNumber < 0) {
+ server->m.mounted_vol[0] = 0;
+ vnum = NCP_NUMBER_OF_VOLUMES;
+ de = 0;
+ dosde = 0;
+ result = 0;
+ } else if (sr.volNumber >= NCP_NUMBER_OF_VOLUMES) {
+ result = -EINVAL;
+ } else if (ncp_mount_subdir(server, sr.volNumber,
+ sr.namespace, sr.dirEntNum,
+ &vnum, &de, &dosde)) {
+ result = -ENOENT;
} else
- DPRINTK("ncpfs: s_root->d_inode==NULL\n");
- } else
- DPRINTK("ncpfs: s_root==NULL\n");
+ result = 0;
+
+ if (result == 0) {
+ dentry = inode->i_sb->s_root;
+ if (dentry) {
+ struct inode* s_inode = dentry->d_inode;
+
+ if (s_inode) {
+ NCP_FINFO(s_inode)->volNumber = vnum;
+ NCP_FINFO(s_inode)->dirEntNum = de;
+ NCP_FINFO(s_inode)->DosDirNum = dosde;
+ server->root_setuped = 1;
+ } else {
+ DPRINTK("ncpfs: s_root->d_inode==NULL\n");
+ result = -EIO;
+ }
+ } else {
+ DPRINTK("ncpfs: s_root==NULL\n");
+ result = -EIO;
+ }
+ }
+ result = 0;
+ }
+ mutex_unlock(&server->root_setup_lock);
- return 0;
+ return result;
}
-#ifdef CONFIG_NCPFS_PACKET_SIGNING
+#ifdef CONFIG_NCPFS_PACKET_SIGNING
case NCP_IOC_SIGN_INIT:
- if (file_permission(filp, MAY_WRITE) != 0
- && uid != server->m.mounted_uid)
- return -EACCES;
-
- if (argp) {
- if (server->sign_wanted)
- {
- struct ncp_sign_init sign;
+ {
+ struct ncp_sign_init sign;
+ if (argp)
if (copy_from_user(&sign, argp, sizeof(sign)))
return -EFAULT;
- memcpy(server->sign_root,sign.sign_root,8);
- memcpy(server->sign_last,sign.sign_last,16);
- server->sign_active = 1;
+ ncp_lock_server(server);
+ mutex_lock(&server->rcv.creq_mutex);
+ if (argp) {
+ if (server->sign_wanted) {
+ memcpy(server->sign_root,sign.sign_root,8);
+ memcpy(server->sign_last,sign.sign_last,16);
+ server->sign_active = 1;
+ }
+ /* ignore when signatures not wanted */
+ } else {
+ server->sign_active = 0;
}
- /* ignore when signatures not wanted */
- } else {
- server->sign_active = 0;
+ mutex_unlock(&server->rcv.creq_mutex);
+ ncp_unlock_server(server);
+ return 0;
}
- return 0;
-
+
case NCP_IOC_SIGN_WANTED:
- if (file_permission(filp, MAY_READ) != 0
- && uid != server->m.mounted_uid)
- return -EACCES;
-
- if (put_user(server->sign_wanted, (int __user *)argp))
- return -EFAULT;
- return 0;
+ {
+ int state;
+
+ ncp_lock_server(server);
+ state = server->sign_wanted;
+ ncp_unlock_server(server);
+ if (put_user(state, (int __user *)argp))
+ return -EFAULT;
+ return 0;
+ }
case NCP_IOC_SET_SIGN_WANTED:
{
int newstate;
- if (file_permission(filp, MAY_WRITE) != 0
- && uid != server->m.mounted_uid)
- return -EACCES;
-
/* get only low 8 bits... */
if (get_user(newstate, (unsigned char __user *)argp))
return -EFAULT;
+ result = 0;
+ ncp_lock_server(server);
if (server->sign_active) {
/* cannot turn signatures OFF when active */
- if (!newstate) return -EINVAL;
+ if (!newstate)
+ result = -EINVAL;
} else {
server->sign_wanted = newstate != 0;
}
- return 0;
+ ncp_unlock_server(server);
+ return result;
}
#endif /* CONFIG_NCPFS_PACKET_SIGNING */
#ifdef CONFIG_NCPFS_IOCTL_LOCKING
case NCP_IOC_LOCKUNLOCK:
- if (file_permission(filp, MAY_WRITE) != 0
- && uid != server->m.mounted_uid)
- return -EACCES;
-
{
struct ncp_lock_ioctl rqdata;
@@ -541,16 +544,13 @@ static long __ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
return result;
}
- result = -EIO;
- if (!ncp_conn_valid(server))
- goto outrel;
result = -EISDIR;
if (!S_ISREG(inode->i_mode))
goto outrel;
if (rqdata.cmd == NCP_LOCK_CLEAR)
{
result = ncp_ClearPhysicalRecord(NCP_SERVER(inode),
- NCP_FINFO(inode)->file_handle,
+ NCP_FINFO(inode)->file_handle,
rqdata.offset,
rqdata.length);
if (result > 0) result = 0; /* no such lock */
@@ -573,7 +573,7 @@ static long __ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
rqdata.timeout);
if (result > 0) result = -EAGAIN;
}
-outrel:
+outrel:
ncp_inode_close(inode);
return result;
}
@@ -581,60 +581,62 @@ outrel:
#ifdef CONFIG_COMPAT
case NCP_IOC_GETOBJECTNAME_32:
- if (uid != server->m.mounted_uid)
- return -EACCES;
{
struct compat_ncp_objectname_ioctl user;
size_t outl;
if (copy_from_user(&user, argp, sizeof(user)))
return -EFAULT;
+ down_read(&server->auth_rwsem);
user.auth_type = server->auth.auth_type;
outl = user.object_name_len;
user.object_name_len = server->auth.object_name_len;
if (outl > user.object_name_len)
outl = user.object_name_len;
+ result = 0;
if (outl) {
if (copy_to_user(compat_ptr(user.object_name),
server->auth.object_name,
- outl)) return -EFAULT;
+ outl))
+ result = -EFAULT;
}
- if (copy_to_user(argp, &user, sizeof(user)))
- return -EFAULT;
- return 0;
+ up_read(&server->auth_rwsem);
+ if (!result && copy_to_user(argp, &user, sizeof(user)))
+ result = -EFAULT;
+ return result;
}
#endif
case NCP_IOC_GETOBJECTNAME:
- if (uid != server->m.mounted_uid)
- return -EACCES;
{
struct ncp_objectname_ioctl user;
size_t outl;
if (copy_from_user(&user, argp, sizeof(user)))
return -EFAULT;
+ down_read(&server->auth_rwsem);
user.auth_type = server->auth.auth_type;
outl = user.object_name_len;
user.object_name_len = server->auth.object_name_len;
if (outl > user.object_name_len)
outl = user.object_name_len;
+ result = 0;
if (outl) {
if (copy_to_user(user.object_name,
server->auth.object_name,
- outl)) return -EFAULT;
+ outl))
+ result = -EFAULT;
}
- if (copy_to_user(argp, &user, sizeof(user)))
- return -EFAULT;
- return 0;
+ up_read(&server->auth_rwsem);
+ if (!result && copy_to_user(argp, &user, sizeof(user)))
+ result = -EFAULT;
+ return result;
}
#ifdef CONFIG_COMPAT
case NCP_IOC_SETOBJECTNAME_32:
#endif
case NCP_IOC_SETOBJECTNAME:
- if (uid != server->m.mounted_uid)
- return -EACCES;
{
struct ncp_objectname_ioctl user;
void* newname;
@@ -666,9 +668,7 @@ outrel:
} else {
newname = NULL;
}
- /* enter critical section */
- /* maybe that kfree can sleep so do that this way */
- /* it is at least more SMP friendly (in future...) */
+ down_write(&server->auth_rwsem);
oldname = server->auth.object_name;
oldnamelen = server->auth.object_name_len;
oldprivate = server->priv.data;
@@ -678,7 +678,7 @@ outrel:
server->auth.object_name = newname;
server->priv.len = 0;
server->priv.data = NULL;
- /* leave critical section */
+ up_write(&server->auth_rwsem);
kfree(oldprivate);
kfree(oldname);
return 0;
@@ -688,8 +688,6 @@ outrel:
case NCP_IOC_GETPRIVATEDATA_32:
#endif
case NCP_IOC_GETPRIVATEDATA:
- if (uid != server->m.mounted_uid)
- return -EACCES;
{
struct ncp_privatedata_ioctl user;
size_t outl;
@@ -706,14 +704,20 @@ outrel:
if (copy_from_user(&user, argp, sizeof(user)))
return -EFAULT;
+ down_read(&server->auth_rwsem);
outl = user.len;
user.len = server->priv.len;
if (outl > user.len) outl = user.len;
+ result = 0;
if (outl) {
if (copy_to_user(user.data,
server->priv.data,
- outl)) return -EFAULT;
+ outl))
+ result = -EFAULT;
}
+ up_read(&server->auth_rwsem);
+ if (result)
+ return result;
#ifdef CONFIG_COMPAT
if (cmd == NCP_IOC_GETPRIVATEDATA_32) {
struct compat_ncp_privatedata_ioctl user32;
@@ -733,8 +737,6 @@ outrel:
case NCP_IOC_SETPRIVATEDATA_32:
#endif
case NCP_IOC_SETPRIVATEDATA:
- if (uid != server->m.mounted_uid)
- return -EACCES;
{
struct ncp_privatedata_ioctl user;
void* new;
@@ -762,12 +764,12 @@ outrel:
} else {
new = NULL;
}
- /* enter critical section */
+ down_write(&server->auth_rwsem);
old = server->priv.data;
oldlen = server->priv.len;
server->priv.len = user.len;
server->priv.data = new;
- /* leave critical section */
+ up_write(&server->auth_rwsem);
kfree(old);
return 0;
}
@@ -775,17 +777,13 @@ outrel:
#ifdef CONFIG_NCPFS_NLS
case NCP_IOC_SETCHARSETS:
return ncp_set_charsets(server, argp);
-
+
case NCP_IOC_GETCHARSETS:
return ncp_get_charsets(server, argp);
#endif /* CONFIG_NCPFS_NLS */
case NCP_IOC_SETDENTRYTTL:
- if (file_permission(filp, MAY_WRITE) != 0 &&
- uid != server->m.mounted_uid)
- return -EACCES;
-
{
u_int32_t user;
@@ -795,13 +793,13 @@ outrel:
if (user > 20000)
return -EINVAL;
user = (user * HZ) / 1000;
- server->dentry_ttl = user;
+ atomic_set(&server->dentry_ttl, user);
return 0;
}
-
+
case NCP_IOC_GETDENTRYTTL:
{
- u_int32_t user = (server->dentry_ttl * 1000) / HZ;
+ u_int32_t user = (atomic_read(&server->dentry_ttl) * 1000) / HZ;
if (copy_to_user(argp, &user, sizeof(user)))
return -EFAULT;
return 0;
@@ -811,59 +809,103 @@ outrel:
return -EINVAL;
}
-static int ncp_ioctl_need_write(unsigned int cmd)
+long ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
+ struct inode *inode = filp->f_dentry->d_inode;
+ struct ncp_server *server = NCP_SERVER(inode);
+ uid_t uid = current_uid();
+ int need_drop_write = 0;
+ long ret;
+
switch (cmd) {
- case NCP_IOC_GET_FS_INFO:
- case NCP_IOC_GET_FS_INFO_V2:
- case NCP_IOC_NCPREQUEST:
- case NCP_IOC_SETDENTRYTTL:
- case NCP_IOC_SIGN_INIT:
- case NCP_IOC_LOCKUNLOCK:
- case NCP_IOC_SET_SIGN_WANTED:
- return 1;
- case NCP_IOC_GETOBJECTNAME:
- case NCP_IOC_SETOBJECTNAME:
- case NCP_IOC_GETPRIVATEDATA:
- case NCP_IOC_SETPRIVATEDATA:
case NCP_IOC_SETCHARSETS:
- case NCP_IOC_GETCHARSETS:
case NCP_IOC_CONN_LOGGED_IN:
- case NCP_IOC_GETDENTRYTTL:
- case NCP_IOC_GETMOUNTUID2:
- case NCP_IOC_SIGN_WANTED:
- case NCP_IOC_GETROOT:
case NCP_IOC_SETROOT:
- return 0;
- default:
- /* unknown IOCTL command, assume write */
- return 1;
+ if (!capable(CAP_SYS_ADMIN)) {
+ ret = -EACCES;
+ goto out;
+ }
+ break;
}
-}
-
-long ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
- long ret;
-
- lock_kernel();
- if (ncp_ioctl_need_write(cmd)) {
+ if (server->m.mounted_uid != uid) {
+ switch (cmd) {
/*
- * inside the ioctl(), any failures which
- * are because of file_permission() are
- * -EACCESS, so it seems consistent to keep
- * that here.
+ * Only mount owner can issue these ioctls. Information
+ * necessary to authenticate to other NDS servers are
+ * stored here.
*/
- if (mnt_want_write(filp->f_path.mnt)) {
+ case NCP_IOC_GETOBJECTNAME:
+ case NCP_IOC_SETOBJECTNAME:
+ case NCP_IOC_GETPRIVATEDATA:
+ case NCP_IOC_SETPRIVATEDATA:
+#ifdef CONFIG_COMPAT
+ case NCP_IOC_GETOBJECTNAME_32:
+ case NCP_IOC_SETOBJECTNAME_32:
+ case NCP_IOC_GETPRIVATEDATA_32:
+ case NCP_IOC_SETPRIVATEDATA_32:
+#endif
ret = -EACCES;
goto out;
+ /*
+ * These require write access on the inode if user id
+ * does not match. Note that they do not write to the
+ * file... But old code did mnt_want_write, so I keep
+ * it as is. Of course not for mountpoint owner, as
+ * that breaks read-only mounts altogether as ncpmount
+ * needs working NCP_IOC_NCPREQUEST and
+ * NCP_IOC_GET_FS_INFO. Some of these codes (setdentryttl,
+ * signinit, setsignwanted) should be probably restricted
+ * to owner only, or even more to CAP_SYS_ADMIN).
+ */
+ case NCP_IOC_GET_FS_INFO:
+ case NCP_IOC_GET_FS_INFO_V2:
+ case NCP_IOC_NCPREQUEST:
+ case NCP_IOC_SETDENTRYTTL:
+ case NCP_IOC_SIGN_INIT:
+ case NCP_IOC_LOCKUNLOCK:
+ case NCP_IOC_SET_SIGN_WANTED:
+#ifdef CONFIG_COMPAT
+ case NCP_IOC_GET_FS_INFO_V2_32:
+ case NCP_IOC_NCPREQUEST_32:
+#endif
+ ret = mnt_want_write_file(filp);
+ if (ret)
+ goto out;
+ need_drop_write = 1;
+ ret = inode_permission(inode, MAY_WRITE);
+ if (ret)
+ goto outDropWrite;
+ break;
+ /*
+ * Read access required.
+ */
+ case NCP_IOC_GETMOUNTUID16:
+ case NCP_IOC_GETMOUNTUID32:
+ case NCP_IOC_GETMOUNTUID64:
+ case NCP_IOC_GETROOT:
+ case NCP_IOC_SIGN_WANTED:
+ ret = inode_permission(inode, MAY_READ);
+ if (ret)
+ goto out;
+ break;
+ /*
+ * Anybody can read these.
+ */
+ case NCP_IOC_GETCHARSETS:
+ case NCP_IOC_GETDENTRYTTL:
+ default:
+ /* Three codes below are protected by CAP_SYS_ADMIN above. */
+ case NCP_IOC_SETCHARSETS:
+ case NCP_IOC_CONN_LOGGED_IN:
+ case NCP_IOC_SETROOT:
+ break;
}
}
- ret = __ncp_ioctl(filp, cmd, arg);
- if (ncp_ioctl_need_write(cmd))
+ ret = __ncp_ioctl(inode, cmd, arg);
+outDropWrite:
+ if (need_drop_write)
mnt_drop_write(filp->f_path.mnt);
-
out:
- unlock_kernel();
return ret;
}
@@ -872,10 +914,8 @@ long ncp_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
long ret;
- lock_kernel();
arg = (unsigned long) compat_ptr(arg);
ret = ncp_ioctl(file, cmd, arg);
- unlock_kernel();
return ret;
}
#endif
diff --git a/fs/ncpfs/ncplib_kernel.c b/fs/ncpfs/ncplib_kernel.c
index 0ec6237..a95615a 100644
--- a/fs/ncpfs/ncplib_kernel.c
+++ b/fs/ncpfs/ncplib_kernel.c
@@ -107,17 +107,17 @@ ncp_reply_data(struct ncp_server *server, int offset)
return &(server->packet[sizeof(struct ncp_reply_header) + offset]);
}
-static inline u8 BVAL(void *data)
+static inline u8 BVAL(const void *data)
{
- return *(u8 *)data;
+ return *(const u8 *)data;
}
static u8 ncp_reply_byte(struct ncp_server *server, int offset)
{
- return *(u8 *)ncp_reply_data(server, offset);
+ return *(const u8 *)ncp_reply_data(server, offset);
}
-static inline u16 WVAL_LH(void *data)
+static inline u16 WVAL_LH(const void *data)
{
return get_unaligned_le16(data);
}
@@ -134,7 +134,7 @@ ncp_reply_be16(struct ncp_server *server, int offset)
return get_unaligned_be16(ncp_reply_data(server, offset));
}
-static inline u32 DVAL_LH(void *data)
+static inline u32 DVAL_LH(const void *data)
{
return get_unaligned_le32(data);
}
@@ -349,9 +349,9 @@ int ncp_dirhandle_free(struct ncp_server* server, __u8 dirhandle) {
return result;
}
-void ncp_extract_file_info(void *structure, struct nw_info_struct *target)
+void ncp_extract_file_info(const void *structure, struct nw_info_struct *target)
{
- __u8 *name_len;
+ const __u8 *name_len;
const int info_struct_size = offsetof(struct nw_info_struct, nameLen);
memcpy(target, structure, info_struct_size);
@@ -364,7 +364,7 @@ void ncp_extract_file_info(void *structure, struct nw_info_struct *target)
}
#ifdef CONFIG_NCPFS_NFS_NS
-static inline void ncp_extract_nfs_info(unsigned char *structure,
+static inline void ncp_extract_nfs_info(const unsigned char *structure,
struct nw_nfs_info *target)
{
target->mode = DVAL_LH(structure);
@@ -417,7 +417,7 @@ int ncp_obtain_nfs_info(struct ncp_server *server,
* Returns information for a (one-component) name relative to
* the specified directory.
*/
-int ncp_obtain_info(struct ncp_server *server, struct inode *dir, char *path,
+int ncp_obtain_info(struct ncp_server *server, struct inode *dir, const char *path,
struct nw_info_struct *target)
{
__u8 volnum = NCP_FINFO(dir)->volNumber;
@@ -452,16 +452,16 @@ out:
#ifdef CONFIG_NCPFS_NFS_NS
static int
ncp_obtain_DOS_dir_base(struct ncp_server *server,
- __u8 volnum, __le32 dirent,
- char *path, /* At most 1 component */
+ __u8 ns, __u8 volnum, __le32 dirent,
+ const char *path, /* At most 1 component */
__le32 *DOS_dir_base)
{
int result;
ncp_init_request(server);
ncp_add_byte(server, 6); /* subfunction */
- ncp_add_byte(server, server->name_space[volnum]);
- ncp_add_byte(server, server->name_space[volnum]);
+ ncp_add_byte(server, ns);
+ ncp_add_byte(server, ns);
ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */
ncp_add_dword(server, RIM_DIRECTORY);
ncp_add_handle_path(server, volnum, dirent, 1, path);
@@ -523,10 +523,27 @@ ncp_get_known_namespace(struct ncp_server *server, __u8 volume)
#endif /* defined(CONFIG_NCPFS_OS2_NS) || defined(CONFIG_NCPFS_NFS_NS) */
}
+int
+ncp_update_known_namespace(struct ncp_server *server, __u8 volume, int *ret_ns)
+{
+ int ns = ncp_get_known_namespace(server, volume);
+
+ if (ret_ns)
+ *ret_ns = ns;
+
+ DPRINTK("lookup_vol: namespace[%d] = %d\n",
+ volume, server->name_space[volume]);
+
+ if (server->name_space[volume] == ns)
+ return 0;
+ server->name_space[volume] = ns;
+ return 1;
+}
+
static int
ncp_ObtainSpecificDirBase(struct ncp_server *server,
__u8 nsSrc, __u8 nsDst, __u8 vol_num, __le32 dir_base,
- char *path, /* At most 1 component */
+ const char *path, /* At most 1 component */
__le32 *dirEntNum, __le32 *DosDirNum)
{
int result;
@@ -560,14 +577,13 @@ ncp_mount_subdir(struct ncp_server *server,
{
int dstNS;
int result;
-
- dstNS = ncp_get_known_namespace(server, volNumber);
+
+ ncp_update_known_namespace(server, volNumber, &dstNS);
if ((result = ncp_ObtainSpecificDirBase(server, srcNS, dstNS, volNumber,
dirEntNum, NULL, newDirEnt, newDosEnt)) != 0)
{
return result;
}
- server->name_space[volNumber] = dstNS;
*volume = volNumber;
server->m.mounted_vol[1] = 0;
server->m.mounted_vol[0] = 'X';
@@ -575,11 +591,10 @@ ncp_mount_subdir(struct ncp_server *server,
}
int
-ncp_get_volume_root(struct ncp_server *server, const char *volname,
- __u32* volume, __le32* dirent, __le32* dosdirent)
+ncp_get_volume_root(struct ncp_server *server,
+ const char *volname, __u32* volume, __le32* dirent, __le32* dosdirent)
{
int result;
- __u8 volnum;
DPRINTK("ncp_get_volume_root: looking up vol %s\n", volname);
@@ -601,21 +616,14 @@ ncp_get_volume_root(struct ncp_server *server, const char *volname,
return result;
}
*dirent = *dosdirent = ncp_reply_dword(server, 4);
- volnum = ncp_reply_byte(server, 8);
+ *volume = ncp_reply_byte(server, 8);
ncp_unlock_server(server);
- *volume = volnum;
-
- server->name_space[volnum] = ncp_get_known_namespace(server, volnum);
-
- DPRINTK("lookup_vol: namespace[%d] = %d\n",
- volnum, server->name_space[volnum]);
-
return 0;
}
int
-ncp_lookup_volume(struct ncp_server *server, const char *volname,
- struct nw_info_struct *target)
+ncp_lookup_volume(struct ncp_server *server,
+ const char *volname, struct nw_info_struct *target)
{
int result;
@@ -625,6 +633,7 @@ ncp_lookup_volume(struct ncp_server *server, const char *volname,
if (result) {
return result;
}
+ ncp_update_known_namespace(server, target->volNumber, NULL);
target->nameLen = strlen(volname);
memcpy(target->entryName, volname, target->nameLen+1);
target->attributes = aDIR;
@@ -676,8 +685,8 @@ int ncp_modify_nfs_info(struct ncp_server *server, __u8 volnum, __le32 dirent,
{
int result = 0;
+ ncp_init_request(server);
if (server->name_space[volnum] == NW_NS_NFS) {
- ncp_init_request(server);
ncp_add_byte(server, 25); /* subfunction */
ncp_add_byte(server, server->name_space[volnum]);
ncp_add_byte(server, NW_NS_NFS);
@@ -690,8 +699,8 @@ int ncp_modify_nfs_info(struct ncp_server *server, __u8 volnum, __le32 dirent,
ncp_add_dword_lh(server, 1); /* nlinks */
ncp_add_dword_lh(server, rdev);
result = ncp_request(server, 87);
- ncp_unlock_server(server);
}
+ ncp_unlock_server(server);
return result;
}
#endif
@@ -700,7 +709,7 @@ int ncp_modify_nfs_info(struct ncp_server *server, __u8 volnum, __le32 dirent,
static int
ncp_DeleteNSEntry(struct ncp_server *server,
__u8 have_dir_base, __u8 volnum, __le32 dirent,
- char* name, __u8 ns, __le16 attr)
+ const char* name, __u8 ns, __le16 attr)
{
int result;
@@ -734,23 +743,25 @@ ncp_del_file_or_subdir2(struct ncp_server *server,
int
ncp_del_file_or_subdir(struct ncp_server *server,
- struct inode *dir, char *name)
+ struct inode *dir, const char *name)
{
__u8 volnum = NCP_FINFO(dir)->volNumber;
__le32 dirent = NCP_FINFO(dir)->dirEntNum;
+ int name_space;
+ name_space = server->name_space[volnum];
#ifdef CONFIG_NCPFS_NFS_NS
- if (server->name_space[volnum]==NW_NS_NFS)
+ if (name_space == NW_NS_NFS)
{
int result;
- result=ncp_obtain_DOS_dir_base(server, volnum, dirent, name, &dirent);
+ result=ncp_obtain_DOS_dir_base(server, name_space, volnum, dirent, name, &dirent);
if (result) return result;
- return ncp_DeleteNSEntry(server, 1, volnum, dirent, NULL, NW_NS_DOS, cpu_to_le16(0x8006));
+ name = NULL;
+ name_space = NW_NS_DOS;
}
- else
#endif /* CONFIG_NCPFS_NFS_NS */
- return ncp_DeleteNSEntry(server, 1, volnum, dirent, name, server->name_space[volnum], cpu_to_le16(0x8006));
+ return ncp_DeleteNSEntry(server, 1, volnum, dirent, name, name_space, cpu_to_le16(0x8006));
}
static inline void ConvertToNWfromDWORD(__u16 v0, __u16 v1, __u8 ret[6])
@@ -765,7 +776,7 @@ static inline void ConvertToNWfromDWORD(__u16 v0, __u16 v1, __u8 ret[6])
/* If both dir and name are NULL, then in target there's already a
looked-up entry that wants to be opened. */
int ncp_open_create_file_or_subdir(struct ncp_server *server,
- struct inode *dir, char *name,
+ struct inode *dir, const char *name,
int open_create_mode,
__le32 create_attributes,
__le16 desired_acc_rights,
@@ -890,8 +901,8 @@ int ncp_search_for_fileset(struct ncp_server *server,
static int
ncp_RenameNSEntry(struct ncp_server *server,
- struct inode *old_dir, char *old_name, __le16 old_type,
- struct inode *new_dir, char *new_name)
+ struct inode *old_dir, const char *old_name, __le16 old_type,
+ struct inode *new_dir, const char *new_name)
{
int result = -EINVAL;
@@ -929,8 +940,8 @@ out:
}
int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server,
- struct inode *old_dir, char *old_name,
- struct inode *new_dir, char *new_name)
+ struct inode *old_dir, const char *old_name,
+ struct inode *new_dir, const char *new_name)
{
int result;
__le16 old_type = cpu_to_le16(0x06);
@@ -958,7 +969,7 @@ int
ncp_read_kernel(struct ncp_server *server, const char *file_id,
__u32 offset, __u16 to_read, char *target, int *bytes_read)
{
- char *source;
+ const char *source;
int result;
ncp_init_request(server);
diff --git a/fs/ncpfs/ncplib_kernel.h b/fs/ncpfs/ncplib_kernel.h
index 2441d1a..3c57eca 100644
--- a/fs/ncpfs/ncplib_kernel.h
+++ b/fs/ncpfs/ncplib_kernel.h
@@ -65,10 +65,11 @@ static inline void ncp_inode_close(struct inode *inode) {
atomic_dec(&NCP_FINFO(inode)->opened);
}
-void ncp_extract_file_info(void* src, struct nw_info_struct* target);
-int ncp_obtain_info(struct ncp_server *server, struct inode *, char *,
+void ncp_extract_file_info(const void* src, struct nw_info_struct* target);
+int ncp_obtain_info(struct ncp_server *server, struct inode *, const char *,
struct nw_info_struct *target);
int ncp_obtain_nfs_info(struct ncp_server *server, struct nw_info_struct *target);
+int ncp_update_known_namespace(struct ncp_server *server, __u8 volume, int *ret_ns);
int ncp_get_volume_root(struct ncp_server *server, const char *volname,
__u32 *volume, __le32 *dirent, __le32 *dosdirent);
int ncp_lookup_volume(struct ncp_server *, const char *, struct nw_info_struct *);
@@ -80,8 +81,8 @@ int ncp_modify_nfs_info(struct ncp_server *, __u8 volnum, __le32 dirent,
__u32 mode, __u32 rdev);
int ncp_del_file_or_subdir2(struct ncp_server *, struct dentry*);
-int ncp_del_file_or_subdir(struct ncp_server *, struct inode *, char *);
-int ncp_open_create_file_or_subdir(struct ncp_server *, struct inode *, char *,
+int ncp_del_file_or_subdir(struct ncp_server *, struct inode *, const char *);
+int ncp_open_create_file_or_subdir(struct ncp_server *, struct inode *, const char *,
int, __le32, __le16, struct ncp_entry_info *);
int ncp_initialize_search(struct ncp_server *, struct inode *,
@@ -93,7 +94,7 @@ int ncp_search_for_fileset(struct ncp_server *server,
char** rbuf, size_t* rsize);
int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server,
- struct inode *, char *, struct inode *, char *);
+ struct inode *, const char *, struct inode *, const char *);
int
@@ -170,13 +171,13 @@ static inline int ncp_strnicmp(struct nls_table *t, const unsigned char *s1,
#endif /* CONFIG_NCPFS_NLS */
#define NCP_GET_AGE(dentry) (jiffies - (dentry)->d_time)
-#define NCP_MAX_AGE(server) ((server)->dentry_ttl)
+#define NCP_MAX_AGE(server) atomic_read(&(server)->dentry_ttl)
#define NCP_TEST_AGE(server,dentry) (NCP_GET_AGE(dentry) < NCP_MAX_AGE(server))
static inline void
ncp_age_dentry(struct ncp_server* server, struct dentry* dentry)
{
- dentry->d_time = jiffies - server->dentry_ttl;
+ dentry->d_time = jiffies - NCP_MAX_AGE(server);
}
static inline void
diff --git a/fs/ncpfs/ncpsign_kernel.c b/fs/ncpfs/ncpsign_kernel.c
index 7c0b5c2..d8b2d7e 100644
--- a/fs/ncpfs/ncpsign_kernel.c
+++ b/fs/ncpfs/ncpsign_kernel.c
@@ -15,21 +15,21 @@
/* i386: 32-bit, little endian, handles mis-alignment */
#ifdef __i386__
-#define GET_LE32(p) (*(int *)(p))
+#define GET_LE32(p) (*(const int *)(p))
#define PUT_LE32(p,v) { *(int *)(p)=v; }
#else
/* from include/ncplib.h */
-#define BVAL(buf,pos) (((__u8 *)(buf))[pos])
+#define BVAL(buf,pos) (((const __u8 *)(buf))[pos])
#define PVAL(buf,pos) ((unsigned)BVAL(buf,pos))
-#define BSET(buf,pos,val) (BVAL(buf,pos) = (val))
+#define BSET(buf,pos,val) (((__u8 *)(buf))[pos] = (val))
static inline __u16
-WVAL_LH(__u8 * buf, int pos)
+WVAL_LH(const __u8 * buf, int pos)
{
return PVAL(buf, pos) | PVAL(buf, pos + 1) << 8;
}
static inline __u32
-DVAL_LH(__u8 * buf, int pos)
+DVAL_LH(const __u8 * buf, int pos)
{
return WVAL_LH(buf, pos) | WVAL_LH(buf, pos + 2) << 16;
}
diff --git a/fs/ncpfs/sock.c b/fs/ncpfs/sock.c
index c7ff6c7..668bd26 100644
--- a/fs/ncpfs/sock.c
+++ b/fs/ncpfs/sock.c
@@ -746,7 +746,6 @@ static int ncp_do_request(struct ncp_server *server, int size,
return -EIO;
}
if (!ncp_conn_valid(server)) {
- printk(KERN_ERR "ncpfs: Connection invalid!\n");
return -EIO;
}
{
generated by cgit v1.1 at 2024-12-26 18:05:28 +0000