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path: root/fs/ncpfs/inode.c
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Diffstat (limited to 'fs/ncpfs/inode.c')
-rw-r--r--fs/ncpfs/inode.c55
1 files changed, 33 insertions, 22 deletions
diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c
index 1acdad7fcec7..e2be336d1c22 100644
--- a/fs/ncpfs/inode.c
+++ b/fs/ncpfs/inode.c
@@ -331,12 +331,15 @@ static int ncp_show_options(struct seq_file *seq, struct dentry *root)
struct ncp_server *server = NCP_SBP(root->d_sb);
unsigned int tmp;
- if (server->m.uid != 0)
- seq_printf(seq, ",uid=%u", server->m.uid);
- if (server->m.gid != 0)
- seq_printf(seq, ",gid=%u", server->m.gid);
- if (server->m.mounted_uid != 0)
- seq_printf(seq, ",owner=%u", server->m.mounted_uid);
+ if (!uid_eq(server->m.uid, GLOBAL_ROOT_UID))
+ seq_printf(seq, ",uid=%u",
+ from_kuid_munged(&init_user_ns, server->m.uid));
+ if (!gid_eq(server->m.gid, GLOBAL_ROOT_GID))
+ seq_printf(seq, ",gid=%u",
+ from_kgid_munged(&init_user_ns, server->m.gid));
+ if (!uid_eq(server->m.mounted_uid, GLOBAL_ROOT_UID))
+ seq_printf(seq, ",owner=%u",
+ from_kuid_munged(&init_user_ns, server->m.mounted_uid));
tmp = server->m.file_mode & S_IALLUGO;
if (tmp != NCP_DEFAULT_FILE_MODE)
seq_printf(seq, ",mode=0%o", tmp);
@@ -381,13 +384,13 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options)
data->flags = 0;
data->int_flags = 0;
- data->mounted_uid = 0;
+ data->mounted_uid = GLOBAL_ROOT_UID;
data->wdog_pid = NULL;
data->ncp_fd = ~0;
data->time_out = NCP_DEFAULT_TIME_OUT;
data->retry_count = NCP_DEFAULT_RETRY_COUNT;
- data->uid = 0;
- data->gid = 0;
+ data->uid = GLOBAL_ROOT_UID;
+ data->gid = GLOBAL_ROOT_GID;
data->file_mode = NCP_DEFAULT_FILE_MODE;
data->dir_mode = NCP_DEFAULT_DIR_MODE;
data->info_fd = -1;
@@ -399,13 +402,19 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options)
goto err;
switch (optval) {
case 'u':
- data->uid = optint;
+ data->uid = make_kuid(current_user_ns(), optint);
+ if (!uid_valid(data->uid))
+ goto err;
break;
case 'g':
- data->gid = optint;
+ data->gid = make_kgid(current_user_ns(), optint);
+ if (!gid_valid(data->gid))
+ goto err;
break;
case 'o':
- data->mounted_uid = optint;
+ data->mounted_uid = make_kuid(current_user_ns(), optint);
+ if (!uid_valid(data->mounted_uid))
+ goto err;
break;
case 'm':
data->file_mode = optint;
@@ -480,13 +489,13 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
data.flags = md->flags;
data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE;
- data.mounted_uid = md->mounted_uid;
+ data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
data.wdog_pid = find_get_pid(md->wdog_pid);
data.ncp_fd = md->ncp_fd;
data.time_out = md->time_out;
data.retry_count = md->retry_count;
- data.uid = md->uid;
- data.gid = md->gid;
+ data.uid = make_kuid(current_user_ns(), md->uid);
+ data.gid = make_kgid(current_user_ns(), md->gid);
data.file_mode = md->file_mode;
data.dir_mode = md->dir_mode;
data.info_fd = -1;
@@ -499,13 +508,13 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data;
data.flags = md->flags;
- data.mounted_uid = md->mounted_uid;
+ data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
data.wdog_pid = find_get_pid(md->wdog_pid);
data.ncp_fd = md->ncp_fd;
data.time_out = md->time_out;
data.retry_count = md->retry_count;
- data.uid = md->uid;
- data.gid = md->gid;
+ data.uid = make_kuid(current_user_ns(), md->uid);
+ data.gid = make_kgid(current_user_ns(), md->gid);
data.file_mode = md->file_mode;
data.dir_mode = md->dir_mode;
data.info_fd = -1;
@@ -520,6 +529,10 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
goto out;
break;
}
+ error = -EINVAL;
+ if (!uid_valid(data.mounted_uid) || !uid_valid(data.uid) ||
+ !gid_valid(data.gid))
+ goto out;
error = -EBADF;
ncp_filp = fget(data.ncp_fd);
if (!ncp_filp)
@@ -886,12 +899,10 @@ int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
goto out;
result = -EPERM;
- if (((attr->ia_valid & ATTR_UID) &&
- (attr->ia_uid != server->m.uid)))
+ if ((attr->ia_valid & ATTR_UID) && !uid_eq(attr->ia_uid, server->m.uid))
goto out;
- if (((attr->ia_valid & ATTR_GID) &&
- (attr->ia_gid != server->m.gid)))
+ if ((attr->ia_valid & ATTR_GID) && !gid_eq(attr->ia_gid, server->m.gid))
goto out;
if (((attr->ia_valid & ATTR_MODE) &&