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ksmbd: remove select FS_POSIX_ACL in Kconfig

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ksmbd is forcing to turn on FS_POSIX_ACL in Kconfig to use vfs acl
functions(posix_acl_alloc, get_acl, set_posix_acl). OpenWRT and other
platform doesn't use acl and this config is disable by default in
kernel. This patch use IS_ENABLED() to know acl config is enable and use
acl function if it is enable.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Namjae Jeon 2021-08-13 08:15:33 +09:00
parent c6ce2b5716
commit 777cad1604
4 changed files with 59 additions and 36 deletions
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1
fs/ksmbd/Kconfig
View File

@ -19,7 +19,6 @@ config SMB_SERVER
select CRYPTO_GCM
select ASN1
select OID_REGISTRY
select FS_POSIX_ACL
default n
help
Choose Y here if you want to allow SMB3 compliant clients

9
fs/ksmbd/smb2pdu.c
View File

@ -2386,11 +2386,14 @@ static void ksmbd_acls_fattr(struct smb_fattr *fattr, struct inode *inode)
fattr->cf_uid = inode->i_uid;
fattr->cf_gid = inode->i_gid;
fattr->cf_mode = inode->i_mode;
fattr->cf_acls = NULL;
fattr->cf_dacls = NULL;
fattr->cf_acls = get_acl(inode, ACL_TYPE_ACCESS);
if (S_ISDIR(inode->i_mode))
fattr->cf_dacls = get_acl(inode, ACL_TYPE_DEFAULT);
if (IS_ENABLED(CONFIG_FS_POSIX_ACL)) {
fattr->cf_acls = get_acl(inode, ACL_TYPE_ACCESS);
if (S_ISDIR(inode->i_mode))
fattr->cf_dacls = get_acl(inode, ACL_TYPE_DEFAULT);
}
}
/**

76
fs/ksmbd/smbacl.c
View File

@ -533,22 +533,29 @@ static void parse_dacl(struct user_namespace *user_ns,
if (acl_state.users->n || acl_state.groups->n) {
acl_state.mask.allow = 0x07;
fattr->cf_acls = posix_acl_alloc(acl_state.users->n +
acl_state.groups->n + 4, GFP_KERNEL);
if (fattr->cf_acls) {
cf_pace = fattr->cf_acls->a_entries;
posix_state_to_acl(&acl_state, cf_pace);
if (IS_ENABLED(CONFIG_FS_POSIX_ACL)) {
fattr->cf_acls =
posix_acl_alloc(acl_state.users->n +
acl_state.groups->n + 4, GFP_KERNEL);
if (fattr->cf_acls) {
cf_pace = fattr->cf_acls->a_entries;
posix_state_to_acl(&acl_state, cf_pace);
}
}
}
if (default_acl_state.users->n || default_acl_state.groups->n) {
default_acl_state.mask.allow = 0x07;
fattr->cf_dacls =
posix_acl_alloc(default_acl_state.users->n +
default_acl_state.groups->n + 4, GFP_KERNEL);
if (fattr->cf_dacls) {
cf_pdace = fattr->cf_dacls->a_entries;
posix_state_to_acl(&default_acl_state, cf_pdace);
if (IS_ENABLED(CONFIG_FS_POSIX_ACL)) {
fattr->cf_dacls =
posix_acl_alloc(default_acl_state.users->n +
default_acl_state.groups->n + 4, GFP_KERNEL);
if (fattr->cf_dacls) {
cf_pdace = fattr->cf_dacls->a_entries;
posix_state_to_acl(&default_acl_state, cf_pdace);
}
}
}
free_acl_state(&acl_state);
@ -1221,31 +1228,36 @@ int smb_check_perm_dacl(struct ksmbd_conn *conn, struct path *path,
granted = GENERIC_ALL_FLAGS;
}
posix_acls = get_acl(d_inode(path->dentry), ACL_TYPE_ACCESS);
if (posix_acls && !found) {
unsigned int id = -1;
if (IS_ENABLED(CONFIG_FS_POSIX_ACL)) {
posix_acls = get_acl(d_inode(path->dentry), ACL_TYPE_ACCESS);
if (posix_acls && !found) {
unsigned int id = -1;
pa_entry = posix_acls->a_entries;
for (i = 0; i < posix_acls->a_count; i++, pa_entry++) {
if (pa_entry->e_tag == ACL_USER)
id = from_kuid(user_ns,
pa_entry->e_uid);
else if (pa_entry->e_tag == ACL_GROUP)
id = from_kgid(user_ns,
pa_entry->e_gid);
else
continue;
pa_entry = posix_acls->a_entries;
for (i = 0; i < posix_acls->a_count; i++, pa_entry++) {
if (pa_entry->e_tag == ACL_USER)
id = from_kuid(user_ns,
pa_entry->e_uid);
else if (pa_entry->e_tag == ACL_GROUP)
id = from_kgid(user_ns,
pa_entry->e_gid);
else
continue;
if (id == uid) {
mode_to_access_flags(pa_entry->e_perm, 0777, &access_bits);
if (!access_bits)
access_bits = SET_MINIMUM_RIGHTS;
goto check_access_bits;
if (id == uid) {
mode_to_access_flags(pa_entry->e_perm,
0777,
&access_bits);
if (!access_bits)
access_bits =
SET_MINIMUM_RIGHTS;
goto check_access_bits;
}
}
}
if (posix_acls)
posix_acl_release(posix_acls);
}
if (posix_acls)
posix_acl_release(posix_acls);
if (!found) {
if (others_ace) {
@ -1308,7 +1320,7 @@ int set_info_sec(struct ksmbd_conn *conn, struct ksmbd_tree_connect *tcon,
ksmbd_vfs_remove_acl_xattrs(user_ns, path->dentry);
/* Update posix acls */
if (fattr.cf_dacls) {
if (IS_ENABLED(CONFIG_FS_POSIX_ACL) && fattr.cf_dacls) {
rc = set_posix_acl(user_ns, inode,
ACL_TYPE_ACCESS, fattr.cf_acls);
if (S_ISDIR(inode->i_mode) && fattr.cf_dacls)

9
fs/ksmbd/vfs.c
View File

@ -1365,6 +1365,9 @@ static struct xattr_smb_acl *ksmbd_vfs_make_xattr_posix_acl(struct user_namespac
struct xattr_acl_entry *xa_entry;
int i;
if (!IS_ENABLED(CONFIG_FS_POSIX_ACL))
return NULL;
posix_acls = get_acl(inode, acl_type);
if (!posix_acls)
return NULL;
@ -1811,6 +1814,9 @@ int ksmbd_vfs_set_init_posix_acl(struct user_namespace *user_ns,
struct posix_acl *acls;
int rc;
if (!IS_ENABLED(CONFIG_FS_POSIX_ACL))
return -EOPNOTSUPP;
ksmbd_debug(SMB, "Set posix acls\n");
rc = init_acl_state(&acl_state, 1);
if (rc)
@ -1858,6 +1864,9 @@ int ksmbd_vfs_inherit_posix_acl(struct user_namespace *user_ns,
struct posix_acl_entry *pace;
int rc, i;
if (!IS_ENABLED(CONFIG_FS_POSIX_ACL))
return -EOPNOTSUPP;
acls = get_acl(parent_inode, ACL_TYPE_DEFAULT);
if (!acls)
return -ENOENT;