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-rw-r--r--fs/cifs/Makefile3
-rw-r--r--fs/cifs/cifs_dfs_ref.c8
-rw-r--r--fs/cifs/cifs_spnego.c67
-rw-r--r--fs/cifs/cifsacl.c2
-rw-r--r--fs/cifs/cifsencrypt.c97
-rw-r--r--fs/cifs/cifsfs.c42
-rw-r--r--fs/cifs/cifsfs.h14
-rw-r--r--fs/cifs/cifsglob.h3
-rw-r--r--fs/cifs/cifsproto.h14
-rw-r--r--fs/cifs/cifssmb.c15
-rw-r--r--fs/cifs/connect.c139
-rw-r--r--fs/cifs/dir.c2
-rw-r--r--fs/cifs/file.c80
-rw-r--r--fs/cifs/inode.c3
-rw-r--r--fs/cifs/readdir.c61
-rw-r--r--fs/cifs/sess.c4
-rw-r--r--fs/cifs/smb2transport.c107
-rw-r--r--fs/cifs/transport.c141
-rw-r--r--fs/cifs/xattr.c387
19 files changed, 484 insertions, 705 deletions
diff --git a/fs/cifs/Makefile b/fs/cifs/Makefile
index 1964d212a..eed7eb09f 100644
--- a/fs/cifs/Makefile
+++ b/fs/cifs/Makefile
@@ -5,9 +5,10 @@ obj-$(CONFIG_CIFS) += cifs.o
cifs-y := cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o inode.o \
link.o misc.o netmisc.o smbencrypt.o transport.o asn1.o \
- cifs_unicode.o nterr.o xattr.o cifsencrypt.o \
+ cifs_unicode.o nterr.o cifsencrypt.o \
readdir.o ioctl.o sess.o export.o smb1ops.o winucase.o
+cifs-$(CONFIG_CIFS_XATTR) += xattr.o
cifs-$(CONFIG_CIFS_ACL) += cifsacl.o
cifs-$(CONFIG_CIFS_UPCALL) += cifs_spnego.o
diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
index e956cba94..ec9dbbcca 100644
--- a/fs/cifs/cifs_dfs_ref.c
+++ b/fs/cifs/cifs_dfs_ref.c
@@ -151,8 +151,12 @@ char *cifs_compose_mount_options(const char *sb_mountdata,
if (sb_mountdata == NULL)
return ERR_PTR(-EINVAL);
- if (strlen(fullpath) - ref->path_consumed)
+ if (strlen(fullpath) - ref->path_consumed) {
prepath = fullpath + ref->path_consumed;
+ /* skip initial delimiter */
+ if (*prepath == '/' || *prepath == '\\')
+ prepath++;
+ }
*devname = cifs_build_devname(ref->node_name, prepath);
if (IS_ERR(*devname)) {
@@ -302,7 +306,7 @@ static struct vfsmount *cifs_dfs_do_automount(struct dentry *mntpt)
if (full_path == NULL)
goto cdda_exit;
- cifs_sb = CIFS_SB(d_inode(mntpt)->i_sb);
+ cifs_sb = CIFS_SB(mntpt->d_sb);
tlink = cifs_sb_tlink(cifs_sb);
if (IS_ERR(tlink)) {
mnt = ERR_CAST(tlink);
diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index 6908080e9..b611fc2e8 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -24,10 +24,13 @@
#include <linux/string.h>
#include <keys/user-type.h>
#include <linux/key-type.h>
+#include <linux/keyctl.h>
#include <linux/inet.h>
#include "cifsglob.h"
#include "cifs_spnego.h"
#include "cifs_debug.h"
+#include "cifsproto.h"
+static const struct cred *spnego_cred;
/* create a new cifs key */
static int
@@ -102,6 +105,7 @@ cifs_get_spnego_key(struct cifs_ses *sesInfo)
size_t desc_len;
struct key *spnego_key;
const char *hostname = server->hostname;
+ const struct cred *saved_cred;
/* length of fields (with semicolons): ver=0xyz ip4=ipaddress
host=hostname sec=mechanism uid=0xFF user=username */
@@ -163,7 +167,9 @@ cifs_get_spnego_key(struct cifs_ses *sesInfo)
sprintf(dp, ";pid=0x%x", current->pid);
cifs_dbg(FYI, "key description = %s\n", description);
+ saved_cred = override_creds(spnego_cred);
spnego_key = request_key(&cifs_spnego_key_type, description, "");
+ revert_creds(saved_cred);
#ifdef CONFIG_CIFS_DEBUG2
if (cifsFYI && !IS_ERR(spnego_key)) {
@@ -177,3 +183,64 @@ out:
kfree(description);
return spnego_key;
}
+
+int
+init_cifs_spnego(void)
+{
+ struct cred *cred;
+ struct key *keyring;
+ int ret;
+
+ cifs_dbg(FYI, "Registering the %s key type\n",
+ cifs_spnego_key_type.name);
+
+ /*
+ * Create an override credential set with special thread keyring for
+ * spnego upcalls.
+ */
+
+ cred = prepare_kernel_cred(NULL);
+ if (!cred)
+ return -ENOMEM;
+
+ keyring = keyring_alloc(".cifs_spnego",
+ GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, cred,
+ (KEY_POS_ALL & ~KEY_POS_SETATTR) |
+ KEY_USR_VIEW | KEY_USR_READ,
+ KEY_ALLOC_NOT_IN_QUOTA, NULL, NULL);
+ if (IS_ERR(keyring)) {
+ ret = PTR_ERR(keyring);
+ goto failed_put_cred;
+ }
+
+ ret = register_key_type(&cifs_spnego_key_type);
+ if (ret < 0)
+ goto failed_put_key;
+
+ /*
+ * instruct request_key() to use this special keyring as a cache for
+ * the results it looks up
+ */
+ set_bit(KEY_FLAG_ROOT_CAN_CLEAR, &keyring->flags);
+ cred->thread_keyring = keyring;
+ cred->jit_keyring = KEY_REQKEY_DEFL_THREAD_KEYRING;
+ spnego_cred = cred;
+
+ cifs_dbg(FYI, "cifs spnego keyring: %d\n", key_serial(keyring));
+ return 0;
+
+failed_put_key:
+ key_put(keyring);
+failed_put_cred:
+ put_cred(cred);
+ return ret;
+}
+
+void
+exit_cifs_spnego(void)
+{
+ key_revoke(spnego_cred->thread_keyring);
+ unregister_key_type(&cifs_spnego_key_type);
+ put_cred(spnego_cred);
+ cifs_dbg(FYI, "Unregistered %s key type\n", cifs_spnego_key_type.name);
+}
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 3f9312591..71e8a56e9 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -360,7 +360,7 @@ init_cifs_idmap(void)
GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, cred,
(KEY_POS_ALL & ~KEY_POS_SETATTR) |
KEY_USR_VIEW | KEY_USR_READ,
- KEY_ALLOC_NOT_IN_QUOTA, NULL);
+ KEY_ALLOC_NOT_IN_QUOTA, NULL, NULL);
if (IS_ERR(keyring)) {
ret = PTR_ERR(keyring);
goto failed_put_cred;
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 4897dacf8..6aeb8d461 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -66,45 +66,15 @@ cifs_crypto_shash_md5_allocate(struct TCP_Server_Info *server)
return 0;
}
-/*
- * Calculate and return the CIFS signature based on the mac key and SMB PDU.
- * The 16 byte signature must be allocated by the caller. Note we only use the
- * 1st eight bytes and that the smb header signature field on input contains
- * the sequence number before this function is called. Also, this function
- * should be called with the server->srv_mutex held.
- */
-static int cifs_calc_signature(struct smb_rqst *rqst,
- struct TCP_Server_Info *server, char *signature)
+int __cifs_calc_signature(struct smb_rqst *rqst,
+ struct TCP_Server_Info *server, char *signature,
+ struct shash_desc *shash)
{
int i;
int rc;
struct kvec *iov = rqst->rq_iov;
int n_vec = rqst->rq_nvec;
- if (iov == NULL || signature == NULL || server == NULL)
- return -EINVAL;
-
- if (!server->secmech.sdescmd5) {
- rc = cifs_crypto_shash_md5_allocate(server);
- if (rc) {
- cifs_dbg(VFS, "%s: Can't alloc md5 crypto\n", __func__);
- return -1;
- }
- }
-
- rc = crypto_shash_init(&server->secmech.sdescmd5->shash);
- if (rc) {
- cifs_dbg(VFS, "%s: Could not init md5\n", __func__);
- return rc;
- }
-
- rc = crypto_shash_update(&server->secmech.sdescmd5->shash,
- server->session_key.response, server->session_key.len);
- if (rc) {
- cifs_dbg(VFS, "%s: Could not update with response\n", __func__);
- return rc;
- }
-
for (i = 0; i < n_vec; i++) {
if (iov[i].iov_len == 0)
continue;
@@ -117,12 +87,10 @@ static int cifs_calc_signature(struct smb_rqst *rqst,
if (i == 0) {
if (iov[0].iov_len <= 8) /* cmd field at offset 9 */
break; /* nothing to sign or corrupt header */
- rc =
- crypto_shash_update(&server->secmech.sdescmd5->shash,
+ rc = crypto_shash_update(shash,
iov[i].iov_base + 4, iov[i].iov_len - 4);
} else {
- rc =
- crypto_shash_update(&server->secmech.sdescmd5->shash,
+ rc = crypto_shash_update(shash,
iov[i].iov_base, iov[i].iov_len);
}
if (rc) {
@@ -134,21 +102,64 @@ static int cifs_calc_signature(struct smb_rqst *rqst,
/* now hash over the rq_pages array */
for (i = 0; i < rqst->rq_npages; i++) {
- struct kvec p_iov;
+ void *kaddr = kmap(rqst->rq_pages[i]);
+ size_t len = rqst->rq_pagesz;
+
+ if (i == rqst->rq_npages - 1)
+ len = rqst->rq_tailsz;
+
+ crypto_shash_update(shash, kaddr, len);
- cifs_rqst_page_to_kvec(rqst, i, &p_iov);
- crypto_shash_update(&server->secmech.sdescmd5->shash,
- p_iov.iov_base, p_iov.iov_len);
kunmap(rqst->rq_pages[i]);
}
- rc = crypto_shash_final(&server->secmech.sdescmd5->shash, signature);
+ rc = crypto_shash_final(shash, signature);
if (rc)
- cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__);
+ cifs_dbg(VFS, "%s: Could not generate hash\n", __func__);
return rc;
}
+/*
+ * Calculate and return the CIFS signature based on the mac key and SMB PDU.
+ * The 16 byte signature must be allocated by the caller. Note we only use the
+ * 1st eight bytes and that the smb header signature field on input contains
+ * the sequence number before this function is called. Also, this function
+ * should be called with the server->srv_mutex held.
+ */
+static int cifs_calc_signature(struct smb_rqst *rqst,
+ struct TCP_Server_Info *server, char *signature)
+{
+ int rc;
+
+ if (!rqst->rq_iov || !signature || !server)
+ return -EINVAL;
+
+ if (!server->secmech.sdescmd5) {
+ rc = cifs_crypto_shash_md5_allocate(server);
+ if (rc) {
+ cifs_dbg(VFS, "%s: Can't alloc md5 crypto\n", __func__);
+ return -1;
+ }
+ }
+
+ rc = crypto_shash_init(&server->secmech.sdescmd5->shash);
+ if (rc) {
+ cifs_dbg(VFS, "%s: Could not init md5\n", __func__);
+ return rc;
+ }
+
+ rc = crypto_shash_update(&server->secmech.sdescmd5->shash,
+ server->session_key.response, server->session_key.len);
+ if (rc) {
+ cifs_dbg(VFS, "%s: Could not update with response\n", __func__);
+ return rc;
+ }
+
+ return __cifs_calc_signature(rqst, server, signature,
+ &server->secmech.sdescmd5->shash);
+}
+
/* must be called with server->srv_mutex held */
int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
__u32 *pexpected_response_sequence_number)
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 89201564c..5d841f39c 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -37,6 +37,7 @@
#include <linux/freezer.h>
#include <linux/namei.h>
#include <linux/random.h>
+#include <linux/xattr.h>
#include <net/ipv6.h>
#include "cifsfs.h"
#include "cifspdu.h"
@@ -86,6 +87,7 @@ extern mempool_t *cifs_req_poolp;
extern mempool_t *cifs_mid_poolp;
struct workqueue_struct *cifsiod_wq;
+__u32 cifs_lock_secret;
/*
* Bumps refcount for cifs super block.
@@ -135,6 +137,7 @@ cifs_read_super(struct super_block *sb)
sb->s_magic = CIFS_MAGIC_NUMBER;
sb->s_op = &cifs_super_ops;
+ sb->s_xattr = cifs_xattr_handlers;
sb->s_bdi = &cifs_sb->bdi;
sb->s_blocksize = CIFS_MAX_MSGSIZE;
sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */
@@ -888,44 +891,33 @@ const struct inode_operations cifs_dir_inode_ops = {
.rmdir = cifs_rmdir,
.rename2 = cifs_rename2,
.permission = cifs_permission,
-/* revalidate:cifs_revalidate, */
.setattr = cifs_setattr,
.symlink = cifs_symlink,
.mknod = cifs_mknod,
-#ifdef CONFIG_CIFS_XATTR
- .setxattr = cifs_setxattr,
- .getxattr = cifs_getxattr,
+ .setxattr = generic_setxattr,
+ .getxattr = generic_getxattr,
.listxattr = cifs_listxattr,
- .removexattr = cifs_removexattr,
-#endif
+ .removexattr = generic_removexattr,
};
const struct inode_operations cifs_file_inode_ops = {
-/* revalidate:cifs_revalidate, */
.setattr = cifs_setattr,
- .getattr = cifs_getattr, /* do we need this anymore? */
+ .getattr = cifs_getattr,
.permission = cifs_permission,
-#ifdef CONFIG_CIFS_XATTR
- .setxattr = cifs_setxattr,
- .getxattr = cifs_getxattr,
+ .setxattr = generic_setxattr,
+ .getxattr = generic_getxattr,
.listxattr = cifs_listxattr,
- .removexattr = cifs_removexattr,
-#endif
+ .removexattr = generic_removexattr,
};
const struct inode_operations cifs_symlink_inode_ops = {
.readlink = generic_readlink,
.get_link = cifs_get_link,
.permission = cifs_permission,
- /* BB add the following two eventually */
- /* revalidate: cifs_revalidate,
- setattr: cifs_notify_change, *//* BB do we need notify change */
-#ifdef CONFIG_CIFS_XATTR
- .setxattr = cifs_setxattr,
- .getxattr = cifs_getxattr,
+ .setxattr = generic_setxattr,
+ .getxattr = generic_getxattr,
.listxattr = cifs_listxattr,
- .removexattr = cifs_removexattr,
-#endif
+ .removexattr = generic_removexattr,
};
static int cifs_clone_file_range(struct file *src_file, loff_t off,
@@ -1083,7 +1075,7 @@ const struct file_operations cifs_file_direct_nobrl_ops = {
};
const struct file_operations cifs_dir_ops = {
- .iterate = cifs_readdir,
+ .iterate_shared = cifs_readdir,
.release = cifs_closedir,
.read = generic_read_dir,
.unlocked_ioctl = cifs_ioctl,
@@ -1275,6 +1267,8 @@ init_cifs(void)
spin_lock_init(&cifs_file_list_lock);
spin_lock_init(&GlobalMid_Lock);
+ get_random_bytes(&cifs_lock_secret, sizeof(cifs_lock_secret));
+
if (cifs_max_pending < 2) {
cifs_max_pending = 2;
cifs_dbg(FYI, "cifs_max_pending set to min of 2\n");
@@ -1307,7 +1301,7 @@ init_cifs(void)
goto out_destroy_mids;
#ifdef CONFIG_CIFS_UPCALL
- rc = register_key_type(&cifs_spnego_key_type);
+ rc = init_cifs_spnego();
if (rc)
goto out_destroy_request_bufs;
#endif /* CONFIG_CIFS_UPCALL */
@@ -1330,7 +1324,7 @@ out_init_cifs_idmap:
out_register_key_type:
#endif
#ifdef CONFIG_CIFS_UPCALL
- unregister_key_type(&cifs_spnego_key_type);
+ exit_cifs_spnego();
out_destroy_request_bufs:
#endif
cifs_destroy_request_bufs();
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 83aac8ba5..9dcf974ac 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -120,15 +120,19 @@ extern const char *cifs_get_link(struct dentry *, struct inode *,
struct delayed_call *);
extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
const char *symname);
-extern int cifs_removexattr(struct dentry *, const char *);
-extern int cifs_setxattr(struct dentry *, const char *, const void *,
- size_t, int);
-extern ssize_t cifs_getxattr(struct dentry *, const char *, void *, size_t);
+
+#ifdef CONFIG_CIFS_XATTR
+extern const struct xattr_handler *cifs_xattr_handlers[];
extern ssize_t cifs_listxattr(struct dentry *, char *, size_t);
+#else
+# define cifs_xattr_handlers NULL
+# define cifs_listxattr NULL
+#endif
+
extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
#ifdef CONFIG_CIFS_NFSD_EXPORT
extern const struct export_operations cifs_export_ops;
#endif /* CONFIG_CIFS_NFSD_EXPORT */
-#define CIFS_VERSION "2.08"
+#define CIFS_VERSION "2.09"
#endif /* _CIFSFS_H */
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index f2cc0b3d1..8f1d8c1e7 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -615,8 +615,6 @@ struct TCP_Server_Info {
bool sec_mskerberos; /* supports legacy MS Kerberos */
bool large_buf; /* is current buffer large? */
struct delayed_work echo; /* echo ping workqueue job */
- struct kvec *iov; /* reusable kvec array for receives */
- unsigned int nr_iov; /* number of kvecs in array */
char *smallbuf; /* pointer to current "small" buffer */
char *bigbuf; /* pointer to current "big" buffer */
unsigned int total_read; /* total amount of data read in this pass */
@@ -1621,6 +1619,7 @@ void cifs_oplock_break(struct work_struct *work);
extern const struct slow_work_ops cifs_oplock_break_ops;
extern struct workqueue_struct *cifsiod_wq;
+extern __u32 cifs_lock_secret;
extern mempool_t *cifs_mid_poolp;
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index eed7ff50f..1243bd326 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -37,8 +37,6 @@ extern void cifs_buf_release(void *);
extern struct smb_hdr *cifs_small_buf_get(void);
extern void cifs_small_buf_release(void *);
extern void free_rsp_buf(int, void *);
-extern void cifs_rqst_page_to_kvec(struct smb_rqst *rqst, unsigned int idx,
- struct kvec *iov);
extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
unsigned int /* length */);
extern unsigned int _get_xid(void);
@@ -60,6 +58,8 @@ do { \
} while (0)
extern int init_cifs_idmap(void);
extern void exit_cifs_idmap(void);
+extern int init_cifs_spnego(void);
+extern void exit_cifs_spnego(void);
extern char *build_path_from_dentry(struct dentry *);
extern char *cifs_build_path_to_root(struct smb_vol *vol,
struct cifs_sb_info *cifs_sb,
@@ -181,10 +181,9 @@ extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
- unsigned int to_read);
-extern int cifs_readv_from_socket(struct TCP_Server_Info *server,
- struct kvec *iov_orig, unsigned int nr_segs,
- unsigned int to_read);
+ unsigned int to_read);
+extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
+ struct page *page, unsigned int to_read);
extern void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
struct cifs_sb_info *cifs_sb);
extern int cifs_match_super(struct super_block *, void *);
@@ -512,4 +511,7 @@ int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb,
const unsigned char *path, char *pbuf,
unsigned int *pbytes_written);
+int __cifs_calc_signature(struct smb_rqst *rqst,
+ struct TCP_Server_Info *server, char *signature,
+ struct shash_desc *shash);
#endif /* _CIFSPROTO_H */
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index a894bf809..d47197ea4 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -1447,10 +1447,8 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
len = min_t(unsigned int, buflen, server->vals->read_rsp_size) -
HEADER_SIZE(server) + 1;
- rdata->iov.iov_base = buf + HEADER_SIZE(server) - 1;
- rdata->iov.iov_len = len;
-
- length = cifs_readv_from_socket(server, &rdata->iov, 1, len);
+ length = cifs_read_from_socket(server,
+ buf + HEADER_SIZE(server) - 1, len);
if (length < 0)
return length;
server->total_read += length;
@@ -1502,9 +1500,8 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
len = data_offset - server->total_read;
if (len > 0) {
/* read any junk before data into the rest of smallbuf */
- rdata->iov.iov_base = buf + server->total_read;
- rdata->iov.iov_len = len;
- length = cifs_readv_from_socket(server, &rdata->iov, 1, len);
+ length = cifs_read_from_socket(server,
+ buf + server->total_read, len);
if (length < 0)
return length;
server->total_read += length;
@@ -3366,7 +3363,7 @@ static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen,
if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION)
return -EOPNOTSUPP;
- if (acl_type & ACL_TYPE_ACCESS) {
+ if (acl_type == ACL_TYPE_ACCESS) {
count = le16_to_cpu(cifs_acl->access_entry_count);
pACE = &cifs_acl->ace_array[0];
size = sizeof(struct cifs_posix_acl);
@@ -3377,7 +3374,7 @@ static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen,
size_of_data_area, size);
return -EINVAL;
}
- } else if (acl_type & ACL_TYPE_DEFAULT) {
+ } else if (acl_type == ACL_TYPE_DEFAULT) {
count = le16_to_cpu(cifs_acl->access_entry_count);
size = sizeof(struct cifs_posix_acl);
size += sizeof(struct cifs_posix_ace) * count;
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 34cbc582e..7d2b15c06 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -503,99 +503,34 @@ server_unresponsive(struct TCP_Server_Info *server)
return false;
}
-/*
- * kvec_array_init - clone a kvec array, and advance into it
- * @new: pointer to memory for cloned array
- * @iov: pointer to original array
- * @nr_segs: number of members in original array
- * @bytes: number of bytes to advance into the cloned array
- *
- * This function will copy the array provided in iov to a section of memory
- * and advance the specified number of bytes into the new array. It returns
- * the number of segments in the new array. "new" must be at least as big as
- * the original iov array.
- */
-static unsigned int
-kvec_array_init(struct kvec *new, struct kvec *iov, unsigned int nr_segs,
- size_t bytes)
-{
- size_t base = 0;
-
- while (bytes || !iov->iov_len) {
- int copy = min(bytes, iov->iov_len);
-
- bytes -= copy;
- base += copy;
- if (iov->iov_len == base) {
- iov++;
- nr_segs--;
- base = 0;
- }
- }
- memcpy(new, iov, sizeof(*iov) * nr_segs);
- new->iov_base += base;
- new->iov_len -= base;
- return nr_segs;
-}
-
-static struct kvec *
-get_server_iovec(struct TCP_Server_Info *server, unsigned int nr_segs)
-{
- struct kvec *new_iov;
-
- if (server->iov && nr_segs <= server->nr_iov)
- return server->iov;
-
- /* not big enough -- allocate a new one and release the old */
- new_iov = kmalloc(sizeof(*new_iov) * nr_segs, GFP_NOFS);
- if (new_iov) {
- kfree(server->iov);
- server->iov = new_iov;
- server->nr_iov = nr_segs;
- }
- return new_iov;
-}
-
-int
-cifs_readv_from_socket(struct TCP_Server_Info *server, struct kvec *iov_orig,
- unsigned int nr_segs, unsigned int to_read)
+static int
+cifs_readv_from_socket(struct TCP_Server_Info *server, struct msghdr *smb_msg)
{
int length = 0;
int total_read;
- unsigned int segs;
- struct msghdr smb_msg;
- struct kvec *iov;
- iov = get_server_iovec(server, nr_segs);
- if (!iov)
- return -ENOMEM;
-
- smb_msg.msg_control = NULL;
- smb_msg.msg_controllen = 0;
+ smb_msg->msg_control = NULL;
+ smb_msg->msg_controllen = 0;
- for (total_read = 0; to_read; total_read += length, to_read -= length) {
+ for (total_read = 0; msg_data_left(smb_msg); total_read += length) {
try_to_freeze();
- if (server_unresponsive(server)) {
- total_read = -ECONNABORTED;
- break;
- }
+ if (server_unresponsive(server))
+ return -ECONNABORTED;
- segs = kvec_array_init(iov, iov_orig, nr_segs, total_read);
+ length = sock_recvmsg(server->ssocket, smb_msg, 0);
- length = kernel_recvmsg(server->ssocket, &smb_msg,
- iov, segs, to_read, 0);
+ if (server->tcpStatus == CifsExiting)
+ return -ESHUTDOWN;
- if (server->tcpStatus == CifsExiting) {
- total_read = -ESHUTDOWN;
- break;
- } else if (server->tcpStatus == CifsNeedReconnect) {
+ if (server->tcpStatus == CifsNeedReconnect) {
cifs_reconnect(server);
- total_read = -ECONNABORTED;
- break;
- } else if (length == -ERESTARTSYS ||
- length == -EAGAIN ||
- length == -EINTR) {
+ return -ECONNABORTED;
+ }
+
+ if (length == -ERESTARTSYS ||
+ length == -EAGAIN ||
+ length == -EINTR) {
/*
* Minimum sleep to prevent looping, allowing socket
* to clear and app threads to set tcpStatus
@@ -604,12 +539,12 @@ cifs_readv_from_socket(struct TCP_Server_Info *server, struct kvec *iov_orig,
usleep_range(1000, 2000);
length = 0;
continue;
- } else if (length <= 0) {
- cifs_dbg(FYI, "Received no data or error: expecting %d\n"
- "got %d", to_read, length);
+ }
+
+ if (length <= 0) {
+ cifs_dbg(FYI, "Received no data or error: %d\n", length);
cifs_reconnect(server);
- total_read = -ECONNABORTED;
- break;
+ return -ECONNABORTED;
}
}
return total_read;
@@ -619,12 +554,21 @@ int
cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
unsigned int to_read)
{
- struct kvec iov;
+ struct msghdr smb_msg;
+ struct kvec iov = {.iov_base = buf, .iov_len = to_read};
+ iov_iter_kvec(&smb_msg.msg_iter, READ | ITER_KVEC, &iov, 1, to_read);
- iov.iov_base = buf;
- iov.iov_len = to_read;
+ return cifs_readv_from_socket(server, &smb_msg);
+}
- return cifs_readv_from_socket(server, &iov, 1, to_read);
+int
+cifs_read_page_from_socket(struct TCP_Server_Info *server, struct page *page,
+ unsigned int to_read)
+{
+ struct msghdr smb_msg;
+ struct bio_vec bv = {.bv_page = page, .bv_len = to_read};
+ iov_iter_bvec(&smb_msg.msg_iter, READ | ITER_BVEC, &bv, 1, to_read);
+ return cifs_readv_from_socket(server, &smb_msg);
}
static bool
@@ -785,7 +729,6 @@ static void clean_demultiplex_info(struct TCP_Server_Info *server)
}
kfree(server->hostname);
- kfree(server->iov);
kfree(server);
length = atomic_dec_return(&tcpSesAllocCount);
@@ -1198,8 +1141,12 @@ cifs_parse_devname(const char *devname, struct smb_vol *vol)
convert_delimiter(vol->UNC, '\\');
- /* If pos is NULL, or is a bogus trailing delimiter then no prepath */
- if (!*pos++ || !*pos)
+ /* skip any delimiter */
+ if (*pos == '/' || *pos == '\\')
+ pos++;
+
+ /* If pos is NULL then no prepath */
+ if (!*pos)
return 0;
vol->prepath = kstrdup(pos, GFP_KERNEL);
@@ -2920,7 +2867,7 @@ static inline void
cifs_reclassify_socket4(struct socket *sock)
{
struct sock *sk = sock->sk;
- BUG_ON(sock_owned_by_user(sk));
+ BUG_ON(!sock_allow_reclassification(sk));
sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS",
&cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]);
}
@@ -2929,7 +2876,7 @@ static inline void
cifs_reclassify_socket6(struct socket *sock)
{
struct sock *sk = sock->sk;
- BUG_ON(sock_owned_by_user(sk));
+ BUG_ON(!sock_allow_reclassification(sk));
sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS",
&cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]);
}
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index c3eb998a9..fb0903fff 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -445,7 +445,7 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry,
* Check for hashed negative dentry. We have already revalidated
* the dentry and it is fine. No need to perform another lookup.
*/
- if (!d_unhashed(direntry))
+ if (!d_in_lookup(direntry))
return -ENOENT;
res = cifs_lookup(inode, direntry, 0);
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index c03d07446..d4890b6dc 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -271,7 +271,7 @@ struct cifsFileInfo *
cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
struct tcon_link *tlink, __u32 oplock)
{
- struct dentry *dentry = file->f_path.dentry;
+ struct dentry *dentry = file_dentry(file);
struct inode *inode = d_inode(dentry);
struct cifsInodeInfo *cinode = CIFS_I(inode);
struct cifsFileInfo *cfile;
@@ -461,7 +461,7 @@ int cifs_open(struct inode *inode, struct file *file)
tcon = tlink_tcon(tlink);
server = tcon->ses->server;
- full_path = build_path_from_dentry(file->f_path.dentry);
+ full_path = build_path_from_dentry(file_dentry(file));
if (full_path == NULL) {
rc = -ENOMEM;
goto out;
@@ -1112,6 +1112,12 @@ cifs_push_mandatory_locks(struct cifsFileInfo *cfile)
return rc;
}
+static __u32
+hash_lockowner(fl_owner_t owner)
+{
+ return cifs_lock_secret ^ hash32_ptr((const void *)owner);
+}
+
struct lock_to_push {
struct list_head llist;
__u64 offset;
@@ -1178,7 +1184,7 @@ cifs_push_posix_locks(struct cifsFileInfo *cfile)
else
type = CIFS_WRLCK;
lck = list_entry(el, struct lock_to_push, llist);
- lck->pid = flock->fl_pid;
+ lck->pid = hash_lockowner(flock->fl_owner);
lck->netfid = cfile->fid.netfid;
lck->length = length;
lck->type = type;
@@ -1305,7 +1311,8 @@ cifs_getlk(struct file *file, struct file_lock *flock, __u32 type,
posix_lock_type = CIFS_RDLCK;
else
posix_lock_type = CIFS_WRLCK;
- rc = CIFSSMBPosixLock(xid, tcon, netfid, current->tgid,
+ rc = CIFSSMBPosixLock(xid, tcon, netfid,
+ hash_lockowner(flock->fl_owner),
flock->fl_start, length, flock,
posix_lock_type, wait_flag);
return rc;
@@ -1505,7 +1512,8 @@ cifs_setlk(struct file *file, struct file_lock *flock, __u32 type,
posix_lock_type = CIFS_UNLCK;
rc = CIFSSMBPosixLock(xid, tcon, cfile->fid.netfid,
- current->tgid, flock->fl_start, length,
+ hash_lockowner(flock->fl_owner),
+ flock->fl_start, length,
NULL, posix_lock_type, wait_flag);
goto out;
}
@@ -2687,11 +2695,8 @@ cifs_writev(struct kiocb *iocb, struct iov_iter *from)
out:
inode_unlock(inode);
- if (rc > 0) {
- ssize_t err = generic_write_sync(file, iocb->ki_pos - rc, rc);
- if (err < 0)
- rc = err;
- }
+ if (rc > 0)
+ rc = generic_write_sync(iocb, rc);
up_read(&cinode->lock_sem);
return rc;
}
@@ -2855,39 +2860,31 @@ cifs_uncached_read_into_pages(struct TCP_Server_Info *server,
int result = 0;
unsigned int i;
unsigned int nr_pages = rdata->nr_pages;
- struct kvec iov;
rdata->got_bytes = 0;
rdata->tailsz = PAGE_SIZE;
for (i = 0; i < nr_pages; i++) {
struct page *page = rdata->pages[i];
+ size_t n;
- if (len >= PAGE_SIZE) {
- /* enough data to fill the page */
- iov.iov_base = kmap(page);
- iov.iov_len = PAGE_SIZE;
- cifs_dbg(FYI, "%u: iov_base=%p iov_len=%zu\n",
- i, iov.iov_base, iov.iov_len);
- len -= PAGE_SIZE;
- } else if (len > 0) {
- /* enough for partial page, fill and zero the rest */
- iov.iov_base = kmap(page);
- iov.iov_len = len;
- cifs_dbg(FYI, "%u: iov_base=%p iov_len=%zu\n",
- i, iov.iov_base, iov.iov_len);
- memset(iov.iov_base + len, '\0', PAGE_SIZE - len);
- rdata->tailsz = len;
- len = 0;
- } else {
+ if (len <= 0) {
/* no need to hold page hostage */
rdata->pages[i] = NULL;
rdata->nr_pages--;
put_page(page);
continue;
}
-
- result = cifs_readv_from_socket(server, &iov, 1, iov.iov_len);
- kunmap(page);
+ n = len;
+ if (len >= PAGE_SIZE) {
+ /* enough data to fill the page */
+ n = PAGE_SIZE;
+ len -= n;
+ } else {
+ zero_user(page, len, PAGE_SIZE - len);
+ rdata->tailsz = len;
+ len = 0;
+ }
+ result = cifs_read_page_from_socket(server, page, n);
if (result < 0)
break;
@@ -3303,7 +3300,6 @@ cifs_readpages_read_into_pages(struct TCP_Server_Info *server,
u64 eof;
pgoff_t eof_index;
unsigned int nr_pages = rdata->nr_pages;
- struct kvec iov;
/* determine the eof that the server (probably) has */
eof = CIFS_I(rdata->mapping->host)->server_eof;
@@ -3314,23 +3310,14 @@ cifs_readpages_read_into_pages(struct TCP_Server_Info *server,
rdata->tailsz = PAGE_SIZE;
for (i = 0; i < nr_pages; i++) {
struct page *page = rdata->pages[i];
+ size_t n = PAGE_SIZE;
if (len >= PAGE_SIZE) {
- /* enough data to fill the page */
- iov.iov_base = kmap(page);
- iov.iov_len = PAGE_SIZE;
- cifs_dbg(FYI, "%u: idx=%lu iov_base=%p iov_len=%zu\n",
- i, page->index, iov.iov_base, iov.iov_len);
len -= PAGE_SIZE;
} else if (len > 0) {
/* enough for partial page, fill and zero the rest */
- iov.iov_base = kmap(page);
- iov.iov_len = len;
- cifs_dbg(FYI, "%u: idx=%lu iov_base=%p iov_len=%zu\n",
- i, page->index, iov.iov_base, iov.iov_len);
- memset(iov.iov_base + len,
- '\0', PAGE_SIZE - len);
- rdata->tailsz = len;
+ zero_user(page, len, PAGE_SIZE - len);
+ n = rdata->tailsz = len;
len = 0;
} else if (page->index > eof_index) {
/*
@@ -3360,8 +3347,7 @@ cifs_readpages_read_into_pages(struct TCP_Server_Info *server,
continue;
}
- result = cifs_readv_from_socket(server, &iov, 1, iov.iov_len);
- kunmap(page);
+ result = cifs_read_page_from_socket(server, page, n);
if (result < 0)
break;
@@ -3854,7 +3840,7 @@ void cifs_oplock_break(struct work_struct *work)
* Direct IO is not yet supported in the cached mode.
*/
static ssize_t
-cifs_direct_io(struct kiocb *iocb, struct iov_iter *iter, loff_t pos)
+cifs_direct_io(struct kiocb *iocb, struct iov_iter *iter)
{
/*
* FIXME
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 5f9ad5c42..514dadb05 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -2418,8 +2418,7 @@ cifs_setattr_exit:
int
cifs_setattr(struct dentry *direntry, struct iattr *attrs)
{
- struct inode *inode = d_inode(direntry);
- struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
struct cifs_tcon *pTcon = cifs_sb_master_tcon(cifs_sb);
if (pTcon->unix_ext)
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index b30a4a6d9..65cf85dcd 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -78,20 +78,34 @@ cifs_prime_dcache(struct dentry *parent, struct qstr *name,
{
struct dentry *dentry, *alias;
struct inode *inode;
- struct super_block *sb = d_inode(parent)->i_sb;
+ struct super_block *sb = parent->d_sb;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+ DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
cifs_dbg(FYI, "%s: for %s\n", __func__, name->name);
dentry = d_hash_and_lookup(parent, name);
+ if (!dentry) {
+ /*
+ * If we know that the inode will need to be revalidated
+ * immediately, then don't create a new dentry for it.
+ * We'll end up doing an on the wire call either way and
+ * this spares us an invalidation.
+ */
+ if (fattr->cf_flags & CIFS_FATTR_NEED_REVAL)
+ return;
+retry:
+ dentry = d_alloc_parallel(parent, name, &wq);
+ }
if (IS_ERR(dentry))
return;
-
- if (dentry) {
+ if (!d_in_lookup(dentry)) {
inode = d_inode(dentry);
if (inode) {
- if (d_mountpoint(dentry))
- goto out;
+ if (d_mountpoint(dentry)) {
+ dput(dentry);
+ return;
+ }
/*
* If we're generating inode numbers, then we don't
* want to clobber the existing one with the one that
@@ -106,33 +120,22 @@ cifs_prime_dcache(struct dentry *parent, struct qstr *name,
(inode->i_mode & S_IFMT) ==
(fattr->cf_mode & S_IFMT)) {
cifs_fattr_to_inode(inode, fattr);
- goto out;
+ dput(dentry);
+ return;
}
}
d_invalidate(dentry);
dput(dentry);
+ goto retry;
+ } else {
+ inode = cifs_iget(sb, fattr);
+ if (!inode)
+ inode = ERR_PTR(-ENOMEM);
+ alias = d_splice_alias(inode, dentry);
+ d_lookup_done(dentry);
+ if (alias && !IS_ERR(alias))
+ dput(alias);
}
-
- /*
- * If we know that the inode will need to be revalidated immediately,
- * then don't create a new dentry for it. We'll end up doing an on
- * the wire call either way and this spares us an invalidation.
- */
- if (fattr->cf_flags & CIFS_FATTR_NEED_REVAL)
- return;
-
- dentry = d_alloc(parent, name);
- if (!dentry)
- return;
-
- inode = cifs_iget(sb, fattr);
- if (!inode)
- goto out;
-
- alias = d_splice_alias(inode, dentry);
- if (alias && !IS_ERR(alias))
- dput(alias);
-out:
dput(dentry);
}
@@ -300,7 +303,7 @@ initiate_cifs_search(const unsigned int xid, struct file *file)
cifsFile->invalidHandle = true;
cifsFile->srch_inf.endOfSearch = false;
- full_path = build_path_from_dentry(file->f_path.dentry);
+ full_path = build_path_from_dentry(file_dentry(file));
if (full_path == NULL) {
rc = -ENOMEM;
goto error_exit;
@@ -759,7 +762,7 @@ static int cifs_filldir(char *find_entry, struct file *file,
*/
fattr.cf_flags |= CIFS_FATTR_NEED_REVAL;
- cifs_prime_dcache(file->f_path.dentry, &name, &fattr);
+ cifs_prime_dcache(file_dentry(file), &name, &fattr);
ino = cifs_uniqueid_to_ino_t(fattr.cf_uniqueid);
return !dir_emit(ctx, name.name, name.len, ino, fattr.cf_dtype);
diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index e88ffe1da..538d9b556 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -450,7 +450,7 @@ int build_ntlmssp_auth_blob(unsigned char **pbuffer,
} else {
int len;
len = cifs_strtoUTF16((__le16 *)tmp, ses->domainName,
- CIFS_MAX_USERNAME_LEN, nls_cp);
+ CIFS_MAX_DOMAINNAME_LEN, nls_cp);
len *= 2; /* unicode is 2 bytes each */
sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - *pbuffer);
sec_blob->DomainName.Length = cpu_to_le16(len);
@@ -710,6 +710,8 @@ sess_auth_lanman(struct sess_data *sess_data)
rc = calc_lanman_hash(ses->password, ses->server->cryptkey,
ses->server->sec_mode & SECMODE_PW_ENCRYPT ?
true : false, lnm_session_key);
+ if (rc)
+ goto out;
memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_AUTH_RESP_SIZE);
bcc_ptr += CIFS_AUTH_RESP_SIZE;
diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c
index 8732a43b1..bc9a7b634 100644
--- a/fs/cifs/smb2transport.c
+++ b/fs/cifs/smb2transport.c
@@ -135,11 +135,10 @@ smb2_find_smb_ses(struct smb2_hdr *smb2hdr, struct TCP_Server_Info *server)
int
smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
{
- int i, rc;
+ int rc;
unsigned char smb2_signature[SMB2_HMACSHA256_SIZE];
unsigned char *sigptr = smb2_signature;
struct kvec *iov = rqst->rq_iov;
- int n_vec = rqst->rq_nvec;
struct smb2_hdr *smb2_pdu = (struct smb2_hdr *)iov[0].iov_base;
struct cifs_ses *ses;
@@ -171,53 +170,11 @@ smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
return rc;
}
- for (i = 0; i < n_vec; i++) {
- if (iov[i].iov_len == 0)
- continue;
- if (iov[i].iov_base == NULL) {
- cifs_dbg(VFS, "null iovec entry\n");
- return -EIO;
- }
- /*
- * The first entry includes a length field (which does not get
- * signed that occupies the first 4 bytes before the header).
- */
- if (i == 0) {
- if (iov[0].iov_len <= 8) /* cmd field at offset 9 */
- break; /* nothing to sign or corrupt header */
- rc =
- crypto_shash_update(
- &server->secmech.sdeschmacsha256->shash,
- iov[i].iov_base + 4, iov[i].iov_len - 4);
- } else {
- rc =
- crypto_shash_update(
- &server->secmech.sdeschmacsha256->shash,
- iov[i].iov_base, iov[i].iov_len);
- }
- if (rc) {
- cifs_dbg(VFS, "%s: Could not update with payload\n",
- __func__);
- return rc;
- }
- }
-
- /* now hash over the rq_pages array */
- for (i = 0; i < rqst->rq_npages; i++) {
- struct kvec p_iov;
-
- cifs_rqst_page_to_kvec(rqst, i, &p_iov);
- crypto_shash_update(&server->secmech.sdeschmacsha256->shash,
- p_iov.iov_base, p_iov.iov_len);
- kunmap(rqst->rq_pages[i]);
- }
-
- rc = crypto_shash_final(&server->secmech.sdeschmacsha256->shash,
- sigptr);
- if (rc)
- cifs_dbg(VFS, "%s: Could not generate sha256 hash\n", __func__);
+ rc = __cifs_calc_signature(rqst, server, sigptr,
+ &server->secmech.sdeschmacsha256->shash);
- memcpy(smb2_pdu->Signature, sigptr, SMB2_SIGNATURE_SIZE);
+ if (!rc)
+ memcpy(smb2_pdu->Signature, sigptr, SMB2_SIGNATURE_SIZE);
return rc;
}
@@ -395,12 +352,10 @@ generate_smb311signingkey(struct cifs_ses *ses)
int
smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
{
- int i;
int rc = 0;
unsigned char smb3_signature[SMB2_CMACAES_SIZE];
unsigned char *sigptr = smb3_signature;
struct kvec *iov = rqst->rq_iov;
- int n_vec = rqst->rq_nvec;
struct smb2_hdr *smb2_pdu = (struct smb2_hdr *)iov[0].iov_base;
struct cifs_ses *ses;
@@ -431,54 +386,12 @@ smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
cifs_dbg(VFS, "%s: Could not init cmac aes\n", __func__);
return rc;
}
+
+ rc = __cifs_calc_signature(rqst, server, sigptr,
+ &server->secmech.sdesccmacaes->shash);
- for (i = 0; i < n_vec; i++) {
- if (iov[i].iov_len == 0)
- continue;
- if (iov[i].iov_base == NULL) {
- cifs_dbg(VFS, "null iovec entry");
- return -EIO;
- }
- /*
- * The first entry includes a length field (which does not get
- * signed that occupies the first 4 bytes before the header).
- */
- if (i == 0) {
- if (iov[0].iov_len <= 8) /* cmd field at offset 9 */
- break; /* nothing to sign or corrupt header */
- rc =
- crypto_shash_update(
- &server->secmech.sdesccmacaes->shash,
- iov[i].iov_base + 4, iov[i].iov_len - 4);
- } else {
- rc =
- crypto_shash_update(
- &server->secmech.sdesccmacaes->shash,
- iov[i].iov_base, iov[i].iov_len);
- }
- if (rc) {
- cifs_dbg(VFS, "%s: Couldn't update cmac aes with payload\n",
- __func__);
- return rc;
- }
- }
-
- /* now hash over the rq_pages array */
- for (i = 0; i < rqst->rq_npages; i++) {
- struct kvec p_iov;
-
- cifs_rqst_page_to_kvec(rqst, i, &p_iov);
- crypto_shash_update(&server->secmech.sdesccmacaes->shash,
- p_iov.iov_base, p_iov.iov_len);
- kunmap(rqst->rq_pages[i]);
- }
-
- rc = crypto_shash_final(&server->secmech.sdesccmacaes->shash,
- sigptr);
- if (rc)
- cifs_dbg(VFS, "%s: Could not generate cmac aes\n", __func__);
-
- memcpy(smb2_pdu->Signature, sigptr, SMB2_SIGNATURE_SIZE);
+ if (!rc)
+ memcpy(smb2_pdu->Signature, sigptr, SMB2_SIGNATURE_SIZE);
return rc;
}
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 87abe8ed0..206a597b2 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -124,41 +124,32 @@ cifs_delete_mid(struct mid_q_entry *mid)
/*
* smb_send_kvec - send an array of kvecs to the server
* @server: Server to send the data to
- * @iov: Pointer to array of kvecs
- * @n_vec: length of kvec array
+ * @smb_msg: Message to send
* @sent: amount of data sent on socket is stored here
*
* Our basic "send data to server" function. Should be called with srv_mutex
* held. The caller is responsible for handling the results.
*/
static int
-smb_send_kvec(struct TCP_Server_Info *server, struct kvec *iov, size_t n_vec,
- size_t *sent)
+smb_send_kvec(struct TCP_Server_Info *server, struct msghdr *smb_msg,
+ size_t *sent)
{
int rc = 0;
- int i = 0;
- struct msghdr smb_msg;
- unsigned int remaining;
- size_t first_vec = 0;
+ int retries = 0;
struct socket *ssocket = server->ssocket;
*sent = 0;
- smb_msg.msg_name = (struct sockaddr *) &server->dstaddr;
- smb_msg.msg_namelen = sizeof(struct sockaddr);
- smb_msg.msg_control = NULL;
- smb_msg.msg_controllen = 0;
+ smb_msg->msg_name = (struct sockaddr *) &server->dstaddr;
+ smb_msg->msg_namelen = sizeof(struct sockaddr);
+ smb_msg->msg_control = NULL;
+ smb_msg->msg_controllen = 0;
if (server->noblocksnd)
- smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL;
+ smb_msg->msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL;
else
- smb_msg.msg_flags = MSG_NOSIGNAL;
-
- remaining = 0;
- for (i = 0; i < n_vec; i++)
- remaining += iov[i].iov_len;
+ smb_msg->msg_flags = MSG_NOSIGNAL;
- i = 0;
- while (remaining) {
+ while (msg_data_left(smb_msg)) {
/*
* If blocking send, we try 3 times, since each can block
* for 5 seconds. For nonblocking we have to try more
@@ -177,35 +168,21 @@ smb_send_kvec(struct TCP_Server_Info *server, struct kvec *iov, size_t n_vec,
* after the retries we will kill the socket and
* reconnect which may clear the network problem.
*/
- rc = kernel_sendmsg(ssocket, &smb_msg, &iov[first_vec],
- n_vec - first_vec, remaining);
+ rc = sock_sendmsg(ssocket, smb_msg);
if (rc == -EAGAIN) {
- i++;
- if (i >= 14 || (!server->noblocksnd && (i > 2))) {
+ retries++;
+ if (retries >= 14 ||
+ (!server->noblocksnd && (retries > 2))) {
cifs_dbg(VFS, "sends on sock %p stuck for 15 seconds\n",
ssocket);
- rc = -EAGAIN;
- break;
+ return -EAGAIN;
}
- msleep(1 << i);
+ msleep(1 << retries);
continue;
}
if (rc < 0)
- break;
-
- /* send was at least partially successful */
- *sent += rc;
-
- if (rc == remaining) {
- remaining = 0;
- break;
- }
-
- if (rc > remaining) {
- cifs_dbg(VFS, "sent %d requested %d\n", rc, remaining);
- break;
- }
+ return rc;
if (rc == 0) {
/* should never happen, letting socket clear before
@@ -215,59 +192,11 @@ smb_send_kvec(struct TCP_Server_Info *server, struct kvec *iov, size_t n_vec,
continue;
}
- remaining -= rc;
-
- /* the line below resets i */
- for (i = first_vec; i < n_vec; i++) {
- if (iov[i].iov_len) {
- if (rc > iov[i].iov_len) {
- rc -= iov[i].iov_len;
- iov[i].iov_len = 0;
- } else {
- iov[i].iov_base += rc;
- iov[i].iov_len -= rc;
- first_vec = i;
- break;
- }
- }
- }
-
- i = 0; /* in case we get ENOSPC on the next send */
- rc = 0;
+ /* send was at least partially successful */
+ *sent += rc;
+ retries = 0; /* in case we get ENOSPC on the next send */
}
- return rc;
-}
-
-/**
- * rqst_page_to_kvec - Turn a slot in the smb_rqst page array into a kvec
- * @rqst: pointer to smb_rqst
- * @idx: index into the array of the page
- * @iov: pointer to struct kvec that will hold the result
- *
- * Helper function to convert a slot in the rqst->rq_pages array into a kvec.
- * The page will be kmapped and the address placed into iov_base. The length
- * will then be adjusted according to the ptailoff.
- */
-void
-cifs_rqst_page_to_kvec(struct smb_rqst *rqst, unsigned int idx,
- struct kvec *iov)
-{
- /*
- * FIXME: We could avoid this kmap altogether if we used
- * kernel_sendpage instead of kernel_sendmsg. That will only
- * work if signing is disabled though as sendpage inlines the
- * page directly into the fraglist. If userspace modifies the
- * page after we calculate the signature, then the server will
- * reject it and may break the connection. kernel_sendmsg does
- * an extra copy of the data and avoids that issue.
- */
- iov->iov_base = kmap(rqst->rq_pages[idx]);
-
- /* if last page, don't send beyond this offset into page */
- if (idx == (rqst->rq_npages - 1))
- iov->iov_len = rqst->rq_tailsz;
- else
- iov->iov_len = rqst->rq_pagesz;
+ return 0;
}
static unsigned long
@@ -299,8 +228,9 @@ smb_send_rqst(struct TCP_Server_Info *server, struct smb_rqst *rqst)
unsigned int smb_buf_length = get_rfc1002_length(iov[0].iov_base);
unsigned long send_length;
unsigned int i;
- size_t total_len = 0, sent;
+ size_t total_len = 0, sent, size;
struct socket *ssocket = server->ssocket;
+ struct msghdr smb_msg;
int val = 1;
if (ssocket == NULL)
@@ -321,7 +251,13 @@ smb_send_rqst(struct TCP_Server_Info *server, struct smb_rqst *rqst)
kernel_setsockopt(ssocket, SOL_TCP, TCP_CORK,
(char *)&val, sizeof(val));
- rc = smb_send_kvec(server, iov, n_vec, &sent);
+ size = 0;
+ for (i = 0; i < n_vec; i++)
+ size += iov[i].iov_len;
+
+ iov_iter_kvec(&smb_msg.msg_iter, WRITE | ITER_KVEC, iov, n_vec, size);
+
+ rc = smb_send_kvec(server, &smb_msg, &sent);
if (rc < 0)
goto uncork;
@@ -329,11 +265,16 @@ smb_send_rqst(struct TCP_Server_Info *server, struct smb_rqst *rqst)
/* now walk the page array and send each page in it */
for (i = 0; i < rqst->rq_npages; i++) {
- struct kvec p_iov;
-
- cifs_rqst_page_to_kvec(rqst, i, &p_iov);
- rc = smb_send_kvec(server, &p_iov, 1, &sent);
- kunmap(rqst->rq_pages[i]);
+ size_t len = i == rqst->rq_npages - 1
+ ? rqst->rq_tailsz
+ : rqst->rq_pagesz;
+ struct bio_vec bvec = {
+ .bv_page = rqst->rq_pages[i],
+ .bv_len = len
+ };
+ iov_iter_bvec(&smb_msg.msg_iter, WRITE | ITER_BVEC,
+ &bvec, 1, len);
+ rc = smb_send_kvec(server, &smb_msg, &sent);
if (rc < 0)
break;
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
index f5dc2f0df..5e23f64c0 100644
--- a/fs/cifs/xattr.c
+++ b/fs/cifs/xattr.c
@@ -32,92 +32,25 @@
#include "cifs_unicode.h"
#define MAX_EA_VALUE_SIZE 65535
-#define CIFS_XATTR_DOS_ATTRIB "user.DosAttrib"
#define CIFS_XATTR_CIFS_ACL "system.cifs_acl"
/* BB need to add server (Samba e.g) support for security and trusted prefix */
-int cifs_removexattr(struct dentry *direntry, const char *ea_name)
-{
- int rc = -EOPNOTSUPP;
-#ifdef CONFIG_CIFS_XATTR
- unsigned int xid;
- struct cifs_sb_info *cifs_sb;
- struct tcon_link *tlink;
- struct cifs_tcon *pTcon;
- struct super_block *sb;
- char *full_path = NULL;
-
- if (direntry == NULL)
- return -EIO;
- if (d_really_is_negative(direntry))
- return -EIO;
- sb = d_inode(direntry)->i_sb;
- if (sb == NULL)
- return -EIO;
-
- cifs_sb = CIFS_SB(sb);
- tlink = cifs_sb_tlink(cifs_sb);
- if (IS_ERR(tlink))
- return PTR_ERR(tlink);
- pTcon = tlink_tcon(tlink);
-
- xid = get_xid();
-
- full_path = build_path_from_dentry(direntry);
- if (full_path == NULL) {
- rc = -ENOMEM;
- goto remove_ea_exit;
- }
- if (ea_name == NULL) {
- cifs_dbg(FYI, "Null xattr names not supported\n");
- } else if (strncmp(ea_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)
- && (strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN))) {
- cifs_dbg(FYI,
- "illegal xattr request %s (only user namespace supported)\n",
- ea_name);
- /* BB what if no namespace prefix? */
- /* Should we just pass them to server, except for
- system and perhaps security prefixes? */
- } else {
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
- goto remove_ea_exit;
+enum { XATTR_USER, XATTR_CIFS_ACL, XATTR_ACL_ACCESS, XATTR_ACL_DEFAULT };
- ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */
- if (pTcon->ses->server->ops->set_EA)
- rc = pTcon->ses->server->ops->set_EA(xid, pTcon,
- full_path, ea_name, NULL, (__u16)0,
- cifs_sb->local_nls, cifs_remap(cifs_sb));
- }
-remove_ea_exit:
- kfree(full_path);
- free_xid(xid);
- cifs_put_tlink(tlink);
-#endif
- return rc;
-}
-
-int cifs_setxattr(struct dentry *direntry, const char *ea_name,
- const void *ea_value, size_t value_size, int flags)
+static int cifs_xattr_set(const struct xattr_handler *handler,
+ struct dentry *dentry, struct inode *inode,
+ const char *name, const void *value,
+ size_t size, int flags)
{
int rc = -EOPNOTSUPP;
-#ifdef CONFIG_CIFS_XATTR
unsigned int xid;
- struct cifs_sb_info *cifs_sb;
+ struct super_block *sb = dentry->d_sb;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct tcon_link *tlink;
struct cifs_tcon *pTcon;
- struct super_block *sb;
char *full_path;
- if (direntry == NULL)
- return -EIO;
- if (d_really_is_negative(direntry))
- return -EIO;
- sb = d_inode(direntry)->i_sb;
- if (sb == NULL)
- return -EIO;
-
- cifs_sb = CIFS_SB(sb);
tlink = cifs_sb_tlink(cifs_sb);
if (IS_ERR(tlink))
return PTR_ERR(tlink);
@@ -125,10 +58,10 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
xid = get_xid();
- full_path = build_path_from_dentry(direntry);
+ full_path = build_path_from_dentry(dentry);
if (full_path == NULL) {
rc = -ENOMEM;
- goto set_ea_exit;
+ goto out;
}
/* return dos attributes as pseudo xattr */
/* return alt name if available as pseudo attr */
@@ -136,123 +69,93 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
/* if proc/fs/cifs/streamstoxattr is set then
search server for EAs or streams to
returns as xattrs */
- if (value_size > MAX_EA_VALUE_SIZE) {
+ if (size > MAX_EA_VALUE_SIZE) {
cifs_dbg(FYI, "size of EA value too large\n");
rc = -EOPNOTSUPP;
- goto set_ea_exit;
+ goto out;
}
- if (ea_name == NULL) {
- cifs_dbg(FYI, "Null xattr names not supported\n");
- } else if (strncmp(ea_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)
- == 0) {
+ switch (handler->flags) {
+ case XATTR_USER:
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
- goto set_ea_exit;
- if (strncmp(ea_name, CIFS_XATTR_DOS_ATTRIB, 14) == 0)
- cifs_dbg(FYI, "attempt to set cifs inode metadata\n");
+ goto out;
- ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */
if (pTcon->ses->server->ops->set_EA)
rc = pTcon->ses->server->ops->set_EA(xid, pTcon,
- full_path, ea_name, ea_value, (__u16)value_size,
+ full_path, name, value, (__u16)size,
cifs_sb->local_nls, cifs_remap(cifs_sb));
- } else if (strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN)
- == 0) {
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
- goto set_ea_exit;
+ break;
- ea_name += XATTR_OS2_PREFIX_LEN; /* skip past os2. prefix */
- if (pTcon->ses->server->ops->set_EA)
- rc = pTcon->ses->server->ops->set_EA(xid, pTcon,
- full_path, ea_name, ea_value, (__u16)value_size,
- cifs_sb->local_nls, cifs_remap(cifs_sb));
- } else if (strncmp(ea_name, CIFS_XATTR_CIFS_ACL,
- strlen(CIFS_XATTR_CIFS_ACL)) == 0) {
+ case XATTR_CIFS_ACL: {
#ifdef CONFIG_CIFS_ACL
struct cifs_ntsd *pacl;
- pacl = kmalloc(value_size, GFP_KERNEL);
+
+ if (!value)
+ goto out;
+ pacl = kmalloc(size, GFP_KERNEL);
if (!pacl) {
rc = -ENOMEM;
} else {
- memcpy(pacl, ea_value, value_size);
- if (pTcon->ses->server->ops->set_acl)
+ memcpy(pacl, value, size);
+ if (value &&
+ pTcon->ses->server->ops->set_acl)
rc = pTcon->ses->server->ops->set_acl(pacl,
- value_size, d_inode(direntry),
+ size, inode,
full_path, CIFS_ACL_DACL);
else
rc = -EOPNOTSUPP;
if (rc == 0) /* force revalidate of the inode */
- CIFS_I(d_inode(direntry))->time = 0;
+ CIFS_I(inode)->time = 0;
kfree(pacl);
}
-#else
- cifs_dbg(FYI, "Set CIFS ACL not supported yet\n");
#endif /* CONFIG_CIFS_ACL */
- } else {
- int temp;
- temp = strncmp(ea_name, XATTR_NAME_POSIX_ACL_ACCESS,
- strlen(XATTR_NAME_POSIX_ACL_ACCESS));
- if (temp == 0) {
+ break;
+ }
+
+ case XATTR_ACL_ACCESS:
#ifdef CONFIG_CIFS_POSIX
- if (sb->s_flags & MS_POSIXACL)
- rc = CIFSSMBSetPosixACL(xid, pTcon, full_path,
- ea_value, (const int)value_size,
- ACL_TYPE_ACCESS, cifs_sb->local_nls,
- cifs_remap(cifs_sb));
- cifs_dbg(FYI, "set POSIX ACL rc %d\n", rc);
-#else
- cifs_dbg(FYI, "set POSIX ACL not supported\n");
-#endif
- } else if (strncmp(ea_name, XATTR_NAME_POSIX_ACL_DEFAULT,
- strlen(XATTR_NAME_POSIX_ACL_DEFAULT)) == 0) {
+ if (!value)
+ goto out;
+ if (sb->s_flags & MS_POSIXACL)
+ rc = CIFSSMBSetPosixACL(xid, pTcon, full_path,
+ value, (const int)size,
+ ACL_TYPE_ACCESS, cifs_sb->local_nls,
+ cifs_remap(cifs_sb));
+#endif /* CONFIG_CIFS_POSIX */
+ break;
+
+ case XATTR_ACL_DEFAULT:
#ifdef CONFIG_CIFS_POSIX
- if (sb->s_flags & MS_POSIXACL)
- rc = CIFSSMBSetPosixACL(xid, pTcon, full_path,
- ea_value, (const int)value_size,
- ACL_TYPE_DEFAULT, cifs_sb->local_nls,
- cifs_remap(cifs_sb));
- cifs_dbg(FYI, "set POSIX default ACL rc %d\n", rc);
-#else
- cifs_dbg(FYI, "set default POSIX ACL not supported\n");
-#endif
- } else {
- cifs_dbg(FYI, "illegal xattr request %s (only user namespace supported)\n",
- ea_name);
- /* BB what if no namespace prefix? */
- /* Should we just pass them to server, except for
- system and perhaps security prefixes? */
- }
+ if (!value)
+ goto out;
+ if (sb->s_flags & MS_POSIXACL)
+ rc = CIFSSMBSetPosixACL(xid, pTcon, full_path,
+ value, (const int)size,
+ ACL_TYPE_DEFAULT, cifs_sb->local_nls,
+ cifs_remap(cifs_sb));
+#endif /* CONFIG_CIFS_POSIX */
+ break;
}
-set_ea_exit:
+out:
kfree(full_path);
free_xid(xid);
cifs_put_tlink(tlink);
-#endif
return rc;
}
-ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
- void *ea_value, size_t buf_size)
+static int cifs_xattr_get(const struct xattr_handler *handler,
+ struct dentry *dentry, struct inode *inode,
+ const char *name, void *value, size_t size)
{
ssize_t rc = -EOPNOTSUPP;
-#ifdef CONFIG_CIFS_XATTR
unsigned int xid;
- struct cifs_sb_info *cifs_sb;
+ struct super_block *sb = dentry->d_sb;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct tcon_link *tlink;
struct cifs_tcon *pTcon;
- struct super_block *sb;
char *full_path;
- if (direntry == NULL)
- return -EIO;
- if (d_really_is_negative(direntry))
- return -EIO;
- sb = d_inode(direntry)->i_sb;
- if (sb == NULL)
- return -EIO;
-
- cifs_sb = CIFS_SB(sb);
tlink = cifs_sb_tlink(cifs_sb);
if (IS_ERR(tlink))
return PTR_ERR(tlink);
@@ -260,98 +163,72 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
xid = get_xid();
- full_path = build_path_from_dentry(direntry);
+ full_path = build_path_from_dentry(dentry);
if (full_path == NULL) {
rc = -ENOMEM;
- goto get_ea_exit;
+ goto out;
}
/* return dos attributes as pseudo xattr */
/* return alt name if available as pseudo attr */
- if (ea_name == NULL) {
- cifs_dbg(FYI, "Null xattr names not supported\n");
- } else if (strncmp(ea_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)
- == 0) {
+ switch (handler->flags) {
+ case XATTR_USER:
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
- goto get_ea_exit;
+ goto out;
- if (strncmp(ea_name, CIFS_XATTR_DOS_ATTRIB, 14) == 0) {
- cifs_dbg(FYI, "attempt to query cifs inode metadata\n");
- /* revalidate/getattr then populate from inode */
- } /* BB add else when above is implemented */
- ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */
if (pTcon->ses->server->ops->query_all_EAs)
rc = pTcon->ses->server->ops->query_all_EAs(xid, pTcon,
- full_path, ea_name, ea_value, buf_size,
+ full_path, name, value, size,
cifs_sb->local_nls, cifs_remap(cifs_sb));
- } else if (strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN) == 0) {
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
- goto get_ea_exit;
+ break;
- ea_name += XATTR_OS2_PREFIX_LEN; /* skip past os2. prefix */
- if (pTcon->ses->server->ops->query_all_EAs)
- rc = pTcon->ses->server->ops->query_all_EAs(xid, pTcon,
- full_path, ea_name, ea_value, buf_size,
- cifs_sb->local_nls, cifs_remap(cifs_sb));
- } else if (strncmp(ea_name, XATTR_NAME_POSIX_ACL_ACCESS,
- strlen(XATTR_NAME_POSIX_ACL_ACCESS)) == 0) {
+ case XATTR_CIFS_ACL: {
+#ifdef CONFIG_CIFS_ACL
+ u32 acllen;
+ struct cifs_ntsd *pacl;
+
+ if (pTcon->ses->server->ops->get_acl == NULL)
+ goto out; /* rc already EOPNOTSUPP */
+
+ pacl = pTcon->ses->server->ops->get_acl(cifs_sb,
+ inode, full_path, &acllen);
+ if (IS_ERR(pacl)) {
+ rc = PTR_ERR(pacl);
+ cifs_dbg(VFS, "%s: error %zd getting sec desc\n",
+ __func__, rc);
+ } else {
+ if (value) {
+ if (acllen > size)
+ acllen = -ERANGE;
+ else
+ memcpy(value, pacl, acllen);
+ }
+ rc = acllen;
+ kfree(pacl);
+ }
+#endif /* CONFIG_CIFS_ACL */
+ break;
+ }
+
+ case XATTR_ACL_ACCESS:
#ifdef CONFIG_CIFS_POSIX
if (sb->s_flags & MS_POSIXACL)
rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
- ea_value, buf_size, ACL_TYPE_ACCESS,
+ value, size, ACL_TYPE_ACCESS,
cifs_sb->local_nls,
cifs_remap(cifs_sb));
-#else
- cifs_dbg(FYI, "Query POSIX ACL not supported yet\n");
-#endif /* CONFIG_CIFS_POSIX */
- } else if (strncmp(ea_name, XATTR_NAME_POSIX_ACL_DEFAULT,
- strlen(XATTR_NAME_POSIX_ACL_DEFAULT)) == 0) {
+#endif /* CONFIG_CIFS_POSIX */
+ break;
+
+ case XATTR_ACL_DEFAULT:
#ifdef CONFIG_CIFS_POSIX
if (sb->s_flags & MS_POSIXACL)
rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
- ea_value, buf_size, ACL_TYPE_DEFAULT,
+ value, size, ACL_TYPE_DEFAULT,
cifs_sb->local_nls,
cifs_remap(cifs_sb));
-#else
- cifs_dbg(FYI, "Query POSIX default ACL not supported yet\n");
-#endif /* CONFIG_CIFS_POSIX */
- } else if (strncmp(ea_name, CIFS_XATTR_CIFS_ACL,
- strlen(CIFS_XATTR_CIFS_ACL)) == 0) {
-#ifdef CONFIG_CIFS_ACL
- u32 acllen;
- struct cifs_ntsd *pacl;
-
- if (pTcon->ses->server->ops->get_acl == NULL)
- goto get_ea_exit; /* rc already EOPNOTSUPP */
-
- pacl = pTcon->ses->server->ops->get_acl(cifs_sb,
- d_inode(direntry), full_path, &acllen);
- if (IS_ERR(pacl)) {
- rc = PTR_ERR(pacl);
- cifs_dbg(VFS, "%s: error %zd getting sec desc\n",
- __func__, rc);
- } else {
- if (ea_value) {
- if (acllen > buf_size)
- acllen = -ERANGE;
- else
- memcpy(ea_value, pacl, acllen);
- }
- rc = acllen;
- kfree(pacl);
- }
-#else
- cifs_dbg(FYI, "Query CIFS ACL not supported yet\n");
-#endif /* CONFIG_CIFS_ACL */
- } else if (strncmp(ea_name,
- XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) == 0) {
- cifs_dbg(FYI, "Trusted xattr namespace not supported yet\n");
- } else if (strncmp(ea_name,
- XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) == 0) {
- cifs_dbg(FYI, "Security xattr namespace not supported yet\n");
- } else
- cifs_dbg(FYI,
- "illegal xattr request %s (only user namespace supported)\n",
- ea_name);
+#endif /* CONFIG_CIFS_POSIX */
+ break;
+ }
/* We could add an additional check for streams ie
if proc/fs/cifs/streamstoxattr is set then
@@ -361,34 +238,22 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
if (rc == -EINVAL)
rc = -EOPNOTSUPP;
-get_ea_exit:
+out:
kfree(full_path);
free_xid(xid);
cifs_put_tlink(tlink);
-#endif
return rc;
}
ssize_t cifs_listxattr(struct dentry *direntry, char *data, size_t buf_size)
{
ssize_t rc = -EOPNOTSUPP;
-#ifdef CONFIG_CIFS_XATTR
unsigned int xid;
- struct cifs_sb_info *cifs_sb;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
struct tcon_link *tlink;
struct cifs_tcon *pTcon;
- struct super_block *sb;
char *full_path;
- if (direntry == NULL)
- return -EIO;
- if (d_really_is_negative(direntry))
- return -EIO;
- sb = d_inode(direntry)->i_sb;
- if (sb == NULL)
- return -EIO;
-
- cifs_sb = CIFS_SB(sb);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
return -EOPNOTSUPP;
@@ -419,6 +284,50 @@ list_ea_exit:
kfree(full_path);
free_xid(xid);
cifs_put_tlink(tlink);
-#endif
return rc;
}
+
+static const struct xattr_handler cifs_user_xattr_handler = {
+ .prefix = XATTR_USER_PREFIX,
+ .flags = XATTR_USER,
+ .get = cifs_xattr_get,
+ .set = cifs_xattr_set,
+};
+
+/* os2.* attributes are treated like user.* attributes */
+static const struct xattr_handler cifs_os2_xattr_handler = {
+ .prefix = XATTR_OS2_PREFIX,
+ .flags = XATTR_USER,
+ .get = cifs_xattr_get,
+ .set = cifs_xattr_set,
+};
+
+static const struct xattr_handler cifs_cifs_acl_xattr_handler = {
+ .name = CIFS_XATTR_CIFS_ACL,
+ .flags = XATTR_CIFS_ACL,
+ .get = cifs_xattr_get,
+ .set = cifs_xattr_set,
+};
+
+static const struct xattr_handler cifs_posix_acl_access_xattr_handler = {
+ .name = XATTR_NAME_POSIX_ACL_ACCESS,
+ .flags = XATTR_ACL_ACCESS,
+ .get = cifs_xattr_get,
+ .set = cifs_xattr_set,
+};
+
+static const struct xattr_handler cifs_posix_acl_default_xattr_handler = {
+ .name = XATTR_NAME_POSIX_ACL_DEFAULT,
+ .flags = XATTR_ACL_DEFAULT,
+ .get = cifs_xattr_get,
+ .set = cifs_xattr_set,
+};
+
+const struct xattr_handler *cifs_xattr_handlers[] = {
+ &cifs_user_xattr_handler,
+ &cifs_os2_xattr_handler,
+ &cifs_cifs_acl_xattr_handler,
+ &cifs_posix_acl_access_xattr_handler,
+ &cifs_posix_acl_default_xattr_handler,
+ NULL
+};
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-20 04:27:03 +0000