summaryrefslogtreecommitdiffstats
path: root/fs/cifs
diff options
context:
space:
mode:
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/CHANGES10
-rw-r--r--fs/cifs/Kconfig1
-rw-r--r--fs/cifs/README25
-rw-r--r--fs/cifs/cifs_dfs_ref.c16
-rw-r--r--fs/cifs/cifs_spnego.c2
-rw-r--r--fs/cifs/cifs_unicode.c2
-rw-r--r--fs/cifs/cifsacl.c4
-rw-r--r--fs/cifs/cifsencrypt.c1
-rw-r--r--fs/cifs/cifsfs.c112
-rw-r--r--fs/cifs/cifsfs.h4
-rw-r--r--fs/cifs/cifsglob.h30
-rw-r--r--fs/cifs/cifsproto.h11
-rw-r--r--fs/cifs/cifssmb.c317
-rw-r--r--fs/cifs/connect.c105
-rw-r--r--fs/cifs/dir.c66
-rw-r--r--fs/cifs/file.c174
-rw-r--r--fs/cifs/inode.c59
-rw-r--r--fs/cifs/misc.c34
-rw-r--r--fs/cifs/readdir.c4
-rw-r--r--fs/cifs/transport.c51
20 files changed, 446 insertions, 582 deletions
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 92888aa90749..145540a316ab 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -1,3 +1,13 @@
+Version 1.60
+-------------
+Fix memory leak in reconnect. Fix oops in DFS mount error path.
+Set s_maxbytes to smaller (the max that vfs can handle) so that
+sendfile will now work over cifs mounts again. Add noforcegid
+and noforceuid mount parameters. Fix small mem leak when using
+ntlmv2. Fix 2nd mount to same server but with different port to
+be allowed (rather than reusing the 1st port) - only when the
+user explicitly overrides the port on the 2nd mount.
+
Version 1.59
------------
Client uses server inode numbers (which are persistent) rather than
diff --git a/fs/cifs/Kconfig b/fs/cifs/Kconfig
index 6994a0f54f02..80f352596807 100644
--- a/fs/cifs/Kconfig
+++ b/fs/cifs/Kconfig
@@ -2,6 +2,7 @@ config CIFS
tristate "CIFS support (advanced network filesystem, SMBFS successor)"
depends on INET
select NLS
+ select SLOW_WORK
help
This is the client VFS module for the Common Internet File System
(CIFS) protocol which is the successor to the Server Message Block
diff --git a/fs/cifs/README b/fs/cifs/README
index ad92921dbde4..79c1a93400be 100644
--- a/fs/cifs/README
+++ b/fs/cifs/README
@@ -262,11 +262,11 @@ A partial list of the supported mount options follows:
mount.
domain Set the SMB/CIFS workgroup name prepended to the
username during CIFS session establishment
- forceuid Set the default uid for inodes based on the uid
- passed in. For mounts to servers
+ forceuid Set the default uid for inodes to the uid
+ passed in on mount. For mounts to servers
which do support the CIFS Unix extensions, such as a
properly configured Samba server, the server provides
- the uid, gid and mode so this parameter should not be
+ the uid, gid and mode so this parameter should not be
specified unless the server and clients uid and gid
numbering differ. If the server and client are in the
same domain (e.g. running winbind or nss_ldap) and
@@ -278,11 +278,7 @@ A partial list of the supported mount options follows:
of existing files will be the uid (gid) of the person
who executed the mount (root, except when mount.cifs
is configured setuid for user mounts) unless the "uid="
- (gid) mount option is specified. For the uid (gid) of newly
- created files and directories, ie files created since
- the last mount of the server share, the expected uid
- (gid) is cached as long as the inode remains in
- memory on the client. Also note that permission
+ (gid) mount option is specified. Also note that permission
checks (authorization checks) on accesses to a file occur
at the server, but there are cases in which an administrator
may want to restrict at the client as well. For those
@@ -290,12 +286,15 @@ A partial list of the supported mount options follows:
(such as Windows), permissions can also be checked at the
client, and a crude form of client side permission checking
can be enabled by specifying file_mode and dir_mode on
- the client. Note that the mount.cifs helper must be
- at version 1.10 or higher to support specifying the uid
- (or gid) in non-numeric form.
- forcegid (similar to above but for the groupid instead of uid)
+ the client. (default)
+ forcegid (similar to above but for the groupid instead of uid) (default)
+ noforceuid Fill in file owner information (uid) by requesting it from
+ the server if possible. With this option, the value given in
+ the uid= option (on mount) will only be used if the server
+ can not support returning uids on inodes.
+ noforcegid (similar to above but for the group owner, gid, instead of uid)
uid Set the default uid for inodes, and indicate to the
- cifs kernel driver which local user mounted . If the server
+ cifs kernel driver which local user mounted. If the server
supports the unix extensions the default uid is
not used to fill in the owner fields of inodes (files)
unless the "forceuid" parameter is specified.
diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
index 3bb11be8b6a8..fea9e898c4ba 100644
--- a/fs/cifs/cifs_dfs_ref.c
+++ b/fs/cifs/cifs_dfs_ref.c
@@ -55,7 +55,7 @@ void cifs_dfs_release_automount_timer(void)
* i.e. strips from UNC trailing path that is not part of share
* name and fixup missing '\' in the begining of DFS node refferal
* if neccessary.
- * Returns pointer to share name on success or NULL on error.
+ * Returns pointer to share name on success or ERR_PTR on error.
* Caller is responsible for freeing returned string.
*/
static char *cifs_get_share_name(const char *node_name)
@@ -68,7 +68,7 @@ static char *cifs_get_share_name(const char *node_name)
UNC = kmalloc(len+2 /*for term null and additional \ if it's missed */,
GFP_KERNEL);
if (!UNC)
- return NULL;
+ return ERR_PTR(-ENOMEM);
/* get share name and server name */
if (node_name[1] != '\\') {
@@ -87,7 +87,7 @@ static char *cifs_get_share_name(const char *node_name)
cERROR(1, ("%s: no server name end in node name: %s",
__func__, node_name));
kfree(UNC);
- return NULL;
+ return ERR_PTR(-EINVAL);
}
/* find sharename end */
@@ -133,10 +133,16 @@ char *cifs_compose_mount_options(const char *sb_mountdata,
return ERR_PTR(-EINVAL);
*devname = cifs_get_share_name(ref->node_name);
+ if (IS_ERR(*devname)) {
+ rc = PTR_ERR(*devname);
+ *devname = NULL;
+ goto compose_mount_options_err;
+ }
+
rc = dns_resolve_server_name_to_ip(*devname, &srvIP);
if (rc != 0) {
cERROR(1, ("%s: Failed to resolve server part of %s to IP: %d",
- __func__, *devname, rc));;
+ __func__, *devname, rc));
goto compose_mount_options_err;
}
/* md_len = strlen(...) + 12 for 'sep+prefixpath='
@@ -379,7 +385,7 @@ out_err:
goto out;
}
-struct inode_operations cifs_dfs_referral_inode_operations = {
+const struct inode_operations cifs_dfs_referral_inode_operations = {
.follow_link = cifs_dfs_follow_mountpoint,
};
diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index 051caecf7d67..8ec7736ce954 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -125,7 +125,7 @@ cifs_get_spnego_key(struct cifsSesInfo *sesInfo)
if (server->addr.sockAddr.sin_family == AF_INET)
sprintf(dp, "ip4=%pI4", &server->addr.sockAddr.sin_addr);
else if (server->addr.sockAddr.sin_family == AF_INET6)
- sprintf(dp, "ip6=%pi6", &server->addr.sockAddr6.sin6_addr);
+ sprintf(dp, "ip6=%pI6", &server->addr.sockAddr6.sin6_addr);
else
goto out;
diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c
index 60e3c4253de0..714a542cbafc 100644
--- a/fs/cifs/cifs_unicode.c
+++ b/fs/cifs/cifs_unicode.c
@@ -44,7 +44,7 @@ cifs_ucs2_bytes(const __le16 *from, int maxbytes,
int maxwords = maxbytes / 2;
char tmp[NLS_MAX_CHARSET_SIZE];
- for (i = 0; from[i] && i < maxwords; i++) {
+ for (i = 0; i < maxwords && from[i]; i++) {
charlen = codepage->uni2char(le16_to_cpu(from[i]), tmp,
NLS_MAX_CHARSET_SIZE);
if (charlen > 0)
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 6941c22398a6..7dfe0842a6f6 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -607,7 +607,7 @@ static struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *cifs_sb,
return get_cifs_acl_by_path(cifs_sb, path, pacllen);
pntsd = get_cifs_acl_by_fid(cifs_sb, open_file->netfid, pacllen);
- atomic_dec(&open_file->wrtPending);
+ cifsFileInfo_put(open_file);
return pntsd;
}
@@ -665,7 +665,7 @@ static int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
return set_cifs_acl_by_path(cifs_sb, path, pnntsd, acllen);
rc = set_cifs_acl_by_fid(cifs_sb, open_file->netfid, pnntsd, acllen);
- atomic_dec(&open_file->wrtPending);
+ cifsFileInfo_put(open_file);
return rc;
}
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 7c9809523f42..7efe1745494d 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -373,6 +373,7 @@ calc_exit_2:
compare with the NTLM example */
hmac_md5_final(ses->server->ntlmv2_hash, pctxt);
+ kfree(pctxt);
return rc;
}
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 44f30504b82d..9a5e4f5f3122 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -50,7 +50,7 @@
#define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */
#ifdef CONFIG_CIFS_QUOTA
-static struct quotactl_ops cifs_quotactl_ops;
+static const struct quotactl_ops cifs_quotactl_ops;
#endif /* QUOTA */
int cifsFYI = 0;
@@ -64,9 +64,6 @@ unsigned int multiuser_mount = 0;
unsigned int extended_security = CIFSSEC_DEF;
/* unsigned int ntlmv2_support = 0; */
unsigned int sign_CIFS_PDUs = 1;
-extern struct task_struct *oplockThread; /* remove sparse warning */
-struct task_struct *oplockThread = NULL;
-/* extern struct task_struct * dnotifyThread; remove sparse warning */
static const struct super_operations cifs_super_ops;
unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE;
module_param(CIFSMaxBufSize, int, 0);
@@ -185,8 +182,7 @@ out_mount_failed:
cifs_sb->mountdata = NULL;
}
#endif
- if (cifs_sb->local_nls)
- unload_nls(cifs_sb->local_nls);
+ unload_nls(cifs_sb->local_nls);
kfree(cifs_sb);
}
return rc;
@@ -361,13 +357,10 @@ cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server)
static int
cifs_show_options(struct seq_file *s, struct vfsmount *m)
{
- struct cifs_sb_info *cifs_sb;
- struct cifsTconInfo *tcon;
-
- cifs_sb = CIFS_SB(m->mnt_sb);
- tcon = cifs_sb->tcon;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(m->mnt_sb);
+ struct cifsTconInfo *tcon = cifs_sb->tcon;
- seq_printf(s, ",unc=%s", cifs_sb->tcon->treeName);
+ seq_printf(s, ",unc=%s", tcon->treeName);
if (tcon->ses->userName)
seq_printf(s, ",username=%s", tcon->ses->userName);
if (tcon->ses->domainName)
@@ -376,10 +369,14 @@ cifs_show_options(struct seq_file *s, struct vfsmount *m)
seq_printf(s, ",uid=%d", cifs_sb->mnt_uid);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
seq_printf(s, ",forceuid");
+ else
+ seq_printf(s, ",noforceuid");
seq_printf(s, ",gid=%d", cifs_sb->mnt_gid);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
seq_printf(s, ",forcegid");
+ else
+ seq_printf(s, ",noforcegid");
cifs_show_address(s, tcon->ses->server);
@@ -516,7 +513,7 @@ int cifs_xstate_get(struct super_block *sb, struct fs_quota_stat *qstats)
return rc;
}
-static struct quotactl_ops cifs_quotactl_ops = {
+static const struct quotactl_ops cifs_quotactl_ops = {
.set_xquota = cifs_xquota_set,
.get_xquota = cifs_xquota_get,
.set_xstate = cifs_xstate_set,
@@ -972,89 +969,12 @@ cifs_destroy_mids(void)
kmem_cache_destroy(cifs_oplock_cachep);
}
-static int cifs_oplock_thread(void *dummyarg)
-{
- struct oplock_q_entry *oplock_item;
- struct cifsTconInfo *pTcon;
- struct inode *inode;
- __u16 netfid;
- int rc, waitrc = 0;
-
- set_freezable();
- do {
- if (try_to_freeze())
- continue;
-
- spin_lock(&GlobalMid_Lock);
- if (list_empty(&GlobalOplock_Q)) {
- spin_unlock(&GlobalMid_Lock);
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(39*HZ);
- } else {
- oplock_item = list_entry(GlobalOplock_Q.next,
- struct oplock_q_entry, qhead);
- cFYI(1, ("found oplock item to write out"));
- pTcon = oplock_item->tcon;
- inode = oplock_item->pinode;
- netfid = oplock_item->netfid;
- spin_unlock(&GlobalMid_Lock);
- DeleteOplockQEntry(oplock_item);
- /* can not grab inode sem here since it would
- deadlock when oplock received on delete
- since vfs_unlink holds the i_mutex across
- the call */
- /* mutex_lock(&inode->i_mutex);*/
- if (S_ISREG(inode->i_mode)) {
-#ifdef CONFIG_CIFS_EXPERIMENTAL
- if (CIFS_I(inode)->clientCanCacheAll == 0)
- break_lease(inode, FMODE_READ);
- else if (CIFS_I(inode)->clientCanCacheRead == 0)
- break_lease(inode, FMODE_WRITE);
-#endif
- rc = filemap_fdatawrite(inode->i_mapping);
- if (CIFS_I(inode)->clientCanCacheRead == 0) {
- waitrc = filemap_fdatawait(
- inode->i_mapping);
- invalidate_remote_inode(inode);
- }
- if (rc == 0)
- rc = waitrc;
- } else
- rc = 0;
- /* mutex_unlock(&inode->i_mutex);*/
- if (rc)
- CIFS_I(inode)->write_behind_rc = rc;
- cFYI(1, ("Oplock flush inode %p rc %d",
- inode, rc));
-
- /* releasing stale oplock after recent reconnect
- of smb session using a now incorrect file
- handle is not a data integrity issue but do
- not bother sending an oplock release if session
- to server still is disconnected since oplock
- already released by the server in that case */
- if (!pTcon->need_reconnect) {
- rc = CIFSSMBLock(0, pTcon, netfid,
- 0 /* len */ , 0 /* offset */, 0,
- 0, LOCKING_ANDX_OPLOCK_RELEASE,
- false /* wait flag */);
- cFYI(1, ("Oplock release rc = %d", rc));
- }
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(1); /* yield in case q were corrupt */
- }
- } while (!kthread_should_stop());
-
- return 0;
-}
-
static int __init
init_cifs(void)
{
int rc = 0;
cifs_proc_init();
INIT_LIST_HEAD(&cifs_tcp_ses_list);
- INIT_LIST_HEAD(&GlobalOplock_Q);
#ifdef CONFIG_CIFS_EXPERIMENTAL
INIT_LIST_HEAD(&GlobalDnotifyReqList);
INIT_LIST_HEAD(&GlobalDnotifyRsp_Q);
@@ -1117,16 +1037,13 @@ init_cifs(void)
if (rc)
goto out_unregister_key_type;
#endif
- oplockThread = kthread_run(cifs_oplock_thread, NULL, "cifsoplockd");
- if (IS_ERR(oplockThread)) {
- rc = PTR_ERR(oplockThread);
- cERROR(1, ("error %d create oplock thread", rc));
- goto out_unregister_dfs_key_type;
- }
+ rc = slow_work_register_user();
+ if (rc)
+ goto out_unregister_resolver_key;
return 0;
- out_unregister_dfs_key_type:
+ out_unregister_resolver_key:
#ifdef CONFIG_CIFS_DFS_UPCALL
unregister_key_type(&key_type_dns_resolver);
out_unregister_key_type:
@@ -1163,7 +1080,6 @@ exit_cifs(void)
cifs_destroy_inodecache();
cifs_destroy_mids();
cifs_destroy_request_bufs();
- kthread_stop(oplockThread);
}
MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>");
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 6c170948300d..ac2b24c192f8 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -67,7 +67,7 @@ extern int cifs_setattr(struct dentry *, struct iattr *);
extern const struct inode_operations cifs_file_inode_ops;
extern const struct inode_operations cifs_symlink_inode_ops;
-extern struct inode_operations cifs_dfs_referral_inode_operations;
+extern const struct inode_operations cifs_dfs_referral_inode_operations;
/* Functions related to files and directories */
@@ -113,5 +113,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
extern const struct export_operations cifs_export_ops;
#endif /* EXPERIMENTAL */
-#define CIFS_VERSION "1.60"
+#define CIFS_VERSION "1.61"
#endif /* _CIFSFS_H */
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 6084d6379c03..5d0fde18039c 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -18,6 +18,7 @@
*/
#include <linux/in.h>
#include <linux/in6.h>
+#include <linux/slow-work.h>
#include "cifs_fs_sb.h"
#include "cifsacl.h"
/*
@@ -346,16 +347,33 @@ struct cifsFileInfo {
/* lock scope id (0 if none) */
struct file *pfile; /* needed for writepage */
struct inode *pInode; /* needed for oplock break */
+ struct vfsmount *mnt;
struct mutex lock_mutex;
struct list_head llist; /* list of byte range locks we have. */
bool closePend:1; /* file is marked to close */
bool invalidHandle:1; /* file closed via session abend */
- bool messageMode:1; /* for pipes: message vs byte mode */
- atomic_t wrtPending; /* handle in use - defer close */
+ bool oplock_break_cancelled:1;
+ atomic_t count; /* reference count */
struct mutex fh_mutex; /* prevents reopen race after dead ses*/
struct cifs_search_info srch_inf;
+ struct slow_work oplock_break; /* slow_work job for oplock breaks */
};
+/* Take a reference on the file private data */
+static inline void cifsFileInfo_get(struct cifsFileInfo *cifs_file)
+{
+ atomic_inc(&cifs_file->count);
+}
+
+/* Release a reference on the file private data */
+static inline void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
+{
+ if (atomic_dec_and_test(&cifs_file->count)) {
+ iput(cifs_file->pInode);
+ kfree(cifs_file);
+ }
+}
+
/*
* One of these for each file inode
*/
@@ -369,7 +387,6 @@ struct cifsInodeInfo {
unsigned long time; /* jiffies of last update/check of inode */
bool clientCanCacheRead:1; /* read oplock */
bool clientCanCacheAll:1; /* read and writebehind oplock */
- bool oplockPending:1;
bool delete_pending:1; /* DELETE_ON_CLOSE is set */
u64 server_eof; /* current file size on server */
u64 uniqueid; /* server inode number */
@@ -572,9 +589,9 @@ require use of the stronger protocol */
#define CIFSSEC_MUST_LANMAN 0x10010
#define CIFSSEC_MUST_PLNTXT 0x20020
#ifdef CONFIG_CIFS_UPCALL
-#define CIFSSEC_MASK 0xAF0AF /* allows weak security but also krb5 */
+#define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */
#else
-#define CIFSSEC_MASK 0xA70A7 /* current flags supported if weak */
+#define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */
#endif /* UPCALL */
#else /* do not allow weak pw hash */
#ifdef CONFIG_CIFS_UPCALL
@@ -656,8 +673,6 @@ GLOBAL_EXTERN rwlock_t cifs_tcp_ses_lock;
*/
GLOBAL_EXTERN rwlock_t GlobalSMBSeslock;
-GLOBAL_EXTERN struct list_head GlobalOplock_Q;
-
/* Outstanding dir notify requests */
GLOBAL_EXTERN struct list_head GlobalDnotifyReqList;
/* DirNotify response queue */
@@ -708,3 +723,4 @@ GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */
GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */
GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/
+extern const struct slow_work_ops cifs_oplock_break_ops;
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index da8fbf565991..6928c24d1d42 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -86,18 +86,17 @@ extern int CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses,
const int stage,
const struct nls_table *nls_cp);
extern __u16 GetNextMid(struct TCP_Server_Info *server);
-extern struct oplock_q_entry *AllocOplockQEntry(struct inode *, u16,
- struct cifsTconInfo *);
-extern void DeleteOplockQEntry(struct oplock_q_entry *);
-extern void DeleteTconOplockQEntries(struct cifsTconInfo *);
extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
extern u64 cifs_UnixTimeToNT(struct timespec);
extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
int offset);
+extern struct cifsFileInfo *cifs_new_fileinfo(struct inode *newinode,
+ __u16 fileHandle, struct file *file,
+ struct vfsmount *mnt, unsigned int oflags);
extern int cifs_posix_open(char *full_path, struct inode **pinode,
- struct super_block *sb, int mode, int oflags,
- int *poplock, __u16 *pnetfid, int xid);
+ struct vfsmount *mnt, int mode, int oflags,
+ __u32 *poplock, __u16 *pnetfid, int xid);
extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
FILE_UNIX_BASIC_INFO *info,
struct cifs_sb_info *cifs_sb);
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 1866bc2927d4..941441d3e386 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -94,116 +94,145 @@ static void mark_open_files_invalid(struct cifsTconInfo *pTcon)
list_for_each_safe(tmp, tmp1, &pTcon->openFileList) {
open_file = list_entry(tmp, struct cifsFileInfo, tlist);
open_file->invalidHandle = true;
+ open_file->oplock_break_cancelled = true;
}
write_unlock(&GlobalSMBSeslock);
/* BB Add call to invalidate_inodes(sb) for all superblocks mounted
to this tcon */
}
-/* Allocate and return pointer to an SMB request buffer, and set basic
- SMB information in the SMB header. If the return code is zero, this
- function must have filled in request_buf pointer */
+/* reconnect the socket, tcon, and smb session if needed */
static int
-small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
- void **request_buf)
+cifs_reconnect_tcon(struct cifsTconInfo *tcon, int smb_command)
{
int rc = 0;
+ struct cifsSesInfo *ses;
+ struct TCP_Server_Info *server;
+ struct nls_table *nls_codepage;
- /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so
- check for tcp and smb session status done differently
- for those three - in the calling routine */
- if (tcon) {
- if (tcon->tidStatus == CifsExiting) {
- /* only tree disconnect, open, and write,
- (and ulogoff which does not have tcon)
- are allowed as we start force umount */
- if ((smb_command != SMB_COM_WRITE_ANDX) &&
- (smb_command != SMB_COM_OPEN_ANDX) &&
- (smb_command != SMB_COM_TREE_DISCONNECT)) {
- cFYI(1, ("can not send cmd %d while umounting",
- smb_command));
- return -ENODEV;
- }
+ /*
+ * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for
+ * tcp and smb session status done differently for those three - in the
+ * calling routine
+ */
+ if (!tcon)
+ return 0;
+
+ ses = tcon->ses;
+ server = ses->server;
+
+ /*
+ * only tree disconnect, open, and write, (and ulogoff which does not
+ * have tcon) are allowed as we start force umount
+ */
+ if (tcon->tidStatus == CifsExiting) {
+ if (smb_command != SMB_COM_WRITE_ANDX &&
+ smb_command != SMB_COM_OPEN_ANDX &&
+ smb_command != SMB_COM_TREE_DISCONNECT) {
+ cFYI(1, ("can not send cmd %d while umounting",
+ smb_command));
+ return -ENODEV;
}
- if ((tcon->ses) && (tcon->ses->status != CifsExiting) &&
- (tcon->ses->server)) {
- struct nls_table *nls_codepage;
- /* Give Demultiplex thread up to 10 seconds to
- reconnect, should be greater than cifs socket
- timeout which is 7 seconds */
- while (tcon->ses->server->tcpStatus ==
- CifsNeedReconnect) {
- wait_event_interruptible_timeout(tcon->ses->server->response_q,
- (tcon->ses->server->tcpStatus ==
- CifsGood), 10 * HZ);
- if (tcon->ses->server->tcpStatus ==
- CifsNeedReconnect) {
- /* on "soft" mounts we wait once */
- if (!tcon->retry ||
- (tcon->ses->status == CifsExiting)) {
- cFYI(1, ("gave up waiting on "
- "reconnect in smb_init"));
- return -EHOSTDOWN;
- } /* else "hard" mount - keep retrying
- until process is killed or server
- comes back on-line */
- } else /* TCP session is reestablished now */
- break;
- }
+ }
- nls_codepage = load_nls_default();
- /* need to prevent multiple threads trying to
- simultaneously reconnect the same SMB session */
- down(&tcon->ses->sesSem);
- if (tcon->ses->need_reconnect)
- rc = cifs_setup_session(0, tcon->ses,
- nls_codepage);
- if (!rc && (tcon->need_reconnect)) {
- mark_open_files_invalid(tcon);
- rc = CIFSTCon(0, tcon->ses, tcon->treeName,
- tcon, nls_codepage);
- up(&tcon->ses->sesSem);
- /* BB FIXME add code to check if wsize needs
- update due to negotiated smb buffer size
- shrinking */
- if (rc == 0) {
- atomic_inc(&tconInfoReconnectCount);
- /* tell server Unix caps we support */
- if (tcon->ses->capabilities & CAP_UNIX)
- reset_cifs_unix_caps(
- 0 /* no xid */,
- tcon,
- NULL /* we do not know sb */,
- NULL /* no vol info */);
- }
+ if (ses->status == CifsExiting)
+ return -EIO;
- cFYI(1, ("reconnect tcon rc = %d", rc));
- /* Removed call to reopen open files here.
- It is safer (and faster) to reopen files
- one at a time as needed in read and write */
-
- /* Check if handle based operation so we
- know whether we can continue or not without
- returning to caller to reset file handle */
- switch (smb_command) {
- case SMB_COM_READ_ANDX:
- case SMB_COM_WRITE_ANDX:
- case SMB_COM_CLOSE:
- case SMB_COM_FIND_CLOSE2:
- case SMB_COM_LOCKING_ANDX: {
- unload_nls(nls_codepage);
- return -EAGAIN;
- }
- }
- } else {
- up(&tcon->ses->sesSem);
- }
- unload_nls(nls_codepage);
+ /*
+ * Give demultiplex thread up to 10 seconds to reconnect, should be
+ * greater than cifs socket timeout which is 7 seconds
+ */
+ while (server->tcpStatus == CifsNeedReconnect) {
+ wait_event_interruptible_timeout(server->response_q,
+ (server->tcpStatus == CifsGood), 10 * HZ);
- } else {
- return -EIO;
+ /* is TCP session is reestablished now ?*/
+ if (server->tcpStatus != CifsNeedReconnect)
+ break;
+
+ /*
+ * on "soft" mounts we wait once. Hard mounts keep
+ * retrying until process is killed or server comes
+ * back on-line
+ */
+ if (!tcon->retry || ses->status == CifsExiting) {
+ cFYI(1, ("gave up waiting on reconnect in smb_init"));
+ return -EHOSTDOWN;
}
}
+
+ if (!ses->need_reconnect && !tcon->need_reconnect)
+ return 0;
+
+ nls_codepage = load_nls_default();
+
+ /*
+ * need to prevent multiple threads trying to simultaneously
+ * reconnect the same SMB session
+ */
+ down(&ses->sesSem);
+ if (ses->need_reconnect)
+ rc = cifs_setup_session(0, ses, nls_codepage);
+
+ /* do we need to reconnect tcon? */
+ if (rc || !tcon->need_reconnect) {
+ up(&ses->sesSem);
+ goto out;
+ }
+
+ mark_open_files_invalid(tcon);
+ rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage);
+ up(&ses->sesSem);
+ cFYI(1, ("reconnect tcon rc = %d", rc));
+
+ if (rc)
+ goto out;
+
+ /*
+ * FIXME: check if wsize needs updated due to negotiated smb buffer
+ * size shrinking
+ */
+ atomic_inc(&tconInfoReconnectCount);
+
+ /* tell server Unix caps we support */
+ if (ses->capabilities & CAP_UNIX)
+ reset_cifs_unix_caps(0, tcon, NULL, NULL);
+
+ /*
+ * Removed call to reopen open files here. It is safer (and faster) to
+ * reopen files one at a time as needed in read and write.
+ *
+ * FIXME: what about file locks? don't we need to reclaim them ASAP?
+ */
+
+out:
+ /*
+ * Check if handle based operation so we know whether we can continue
+ * or not without returning to caller to reset file handle
+ */
+ switch (smb_command) {
+ case SMB_COM_READ_ANDX:
+ case SMB_COM_WRITE_ANDX:
+ case SMB_COM_CLOSE:
+ case SMB_COM_FIND_CLOSE2:
+ case SMB_COM_LOCKING_ANDX:
+ rc = -EAGAIN;
+ }
+
+ unload_nls(nls_codepage);
+ return rc;
+}
+
+/* Allocate and return pointer to an SMB request buffer, and set basic
+ SMB information in the SMB header. If the return code is zero, this
+ function must have filled in request_buf pointer */
+static int
+small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
+ void **request_buf)
+{
+ int rc = 0;
+
+ rc = cifs_reconnect_tcon(tcon, smb_command);
if (rc)
return rc;
@@ -256,101 +285,7 @@ smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
{
int rc = 0;
- /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so
- check for tcp and smb session status done differently
- for those three - in the calling routine */
- if (tcon) {
- if (tcon->tidStatus == CifsExiting) {
- /* only tree disconnect, open, and write,
- (and ulogoff which does not have tcon)
- are allowed as we start force umount */
- if ((smb_command != SMB_COM_WRITE_ANDX) &&
- (smb_command != SMB_COM_OPEN_ANDX) &&
- (smb_command != SMB_COM_TREE_DISCONNECT)) {
- cFYI(1, ("can not send cmd %d while umounting",
- smb_command));
- return -ENODEV;
- }
- }
-
- if ((tcon->ses) && (tcon->ses->status != CifsExiting) &&
- (tcon->ses->server)) {
- struct nls_table *nls_codepage;
- /* Give Demultiplex thread up to 10 seconds to
- reconnect, should be greater than cifs socket
- timeout which is 7 seconds */
- while (tcon->ses->server->tcpStatus ==
- CifsNeedReconnect) {
- wait_event_interruptible_timeout(tcon->ses->server->response_q,
- (tcon->ses->server->tcpStatus ==
- CifsGood), 10 * HZ);
- if (tcon->ses->server->tcpStatus ==
- CifsNeedReconnect) {
- /* on "soft" mounts we wait once */
- if (!tcon->retry ||
- (tcon->ses->status == CifsExiting)) {
- cFYI(1, ("gave up waiting on "
- "reconnect in smb_init"));
- return -EHOSTDOWN;
- } /* else "hard" mount - keep retrying
- until process is killed or server
- comes on-line */
- } else /* TCP session is reestablished now */
- break;
- }
- nls_codepage = load_nls_default();
- /* need to prevent multiple threads trying to
- simultaneously reconnect the same SMB session */
- down(&tcon->ses->sesSem);
- if (tcon->ses->need_reconnect)
- rc = cifs_setup_session(0, tcon->ses,
- nls_codepage);
- if (!rc && (tcon->need_reconnect)) {
- mark_open_files_invalid(tcon);
- rc = CIFSTCon(0, tcon->ses, tcon->treeName,
- tcon, nls_codepage);
- up(&tcon->ses->sesSem);
- /* BB FIXME add code to check if wsize needs
- update due to negotiated smb buffer size
- shrinking */
- if (rc == 0) {
- atomic_inc(&tconInfoReconnectCount);
- /* tell server Unix caps we support */
- if (tcon->ses->capabilities & CAP_UNIX)
- reset_cifs_unix_caps(
- 0 /* no xid */,
- tcon,
- NULL /* do not know sb */,
- NULL /* no vol info */);
- }
-
- cFYI(1, ("reconnect tcon rc = %d", rc));
- /* Removed call to reopen open files here.
- It is safer (and faster) to reopen files
- one at a time as needed in read and write */
-
- /* Check if handle based operation so we
- know whether we can continue or not without
- returning to caller to reset file handle */
- switch (smb_command) {
- case SMB_COM_READ_ANDX:
- case SMB_COM_WRITE_ANDX:
- case SMB_COM_CLOSE:
- case SMB_COM_FIND_CLOSE2:
- case SMB_COM_LOCKING_ANDX: {
- unload_nls(nls_codepage);
- return -EAGAIN;
- }
- }
- } else {
- up(&tcon->ses->sesSem);
- }
- unload_nls(nls_codepage);
-
- } else {
- return -EIO;
- }
- }
+ rc = cifs_reconnect_tcon(tcon, smb_command);
if (rc)
return rc;
@@ -3961,6 +3896,10 @@ parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr,
if (is_unicode) {
__le16 *tmp = kmalloc(strlen(searchName)*2 + 2,
GFP_KERNEL);
+ if (tmp == NULL) {
+ rc = -ENOMEM;
+ goto parse_DFS_referrals_exit;
+ }
cifsConvertToUCS((__le16 *) tmp, searchName,
PATH_MAX, nls_codepage, remap);
node->path_consumed = cifs_ucs2_bytes(tmp,
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index fc44d316d0bb..43003e0bef18 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -803,6 +803,10 @@ cifs_parse_mount_options(char *options, const char *devname,
char *data;
unsigned int temp_len, i, j;
char separator[2];
+ short int override_uid = -1;
+ short int override_gid = -1;
+ bool uid_specified = false;
+ bool gid_specified = false;
separator[0] = ',';
separator[1] = 0;
@@ -1093,18 +1097,20 @@ cifs_parse_mount_options(char *options, const char *devname,
"too long.\n");
return 1;
}
- } else if (strnicmp(data, "uid", 3) == 0) {
- if (value && *value)
- vol->linux_uid =
- simple_strtoul(value, &value, 0);
- } else if (strnicmp(data, "forceuid", 8) == 0) {
- vol->override_uid = 1;
- } else if (strnicmp(data, "gid", 3) == 0) {
- if (value && *value)
- vol->linux_gid =
- simple_strtoul(value, &value, 0);
- } else if (strnicmp(data, "forcegid", 8) == 0) {
- vol->override_gid = 1;
+ } else if (!strnicmp(data, "uid", 3) && value && *value) {
+ vol->linux_uid = simple_strtoul(value, &value, 0);
+ uid_specified = true;
+ } else if (!strnicmp(data, "forceuid", 8)) {
+ override_uid = 1;
+ } else if (!strnicmp(data, "noforceuid", 10)) {
+ override_uid = 0;
+ } else if (!strnicmp(data, "gid", 3) && value && *value) {
+ vol->linux_gid = simple_strtoul(value, &value, 0);
+ gid_specified = true;
+ } else if (!strnicmp(data, "forcegid", 8)) {
+ override_gid = 1;
+ } else if (!strnicmp(data, "noforcegid", 10)) {
+ override_gid = 0;
} else if (strnicmp(data, "file_mode", 4) == 0) {
if (value && *value) {
vol->file_mode =
@@ -1355,11 +1361,23 @@ cifs_parse_mount_options(char *options, const char *devname,
if (vol->UNCip == NULL)
vol->UNCip = &vol->UNC[2];
+ if (uid_specified)
+ vol->override_uid = override_uid;
+ else if (override_uid == 1)
+ printk(KERN_NOTICE "CIFS: ignoring forceuid mount option "
+ "specified with no uid= option.\n");
+
+ if (gid_specified)
+ vol->override_gid = override_gid;
+ else if (override_gid == 1)
+ printk(KERN_NOTICE "CIFS: ignoring forcegid mount option "
+ "specified with no gid= option.\n");
+
return 0;
}
static struct TCP_Server_Info *
-cifs_find_tcp_session(struct sockaddr_storage *addr)
+cifs_find_tcp_session(struct sockaddr_storage *addr, unsigned short int port)
{
struct list_head *tmp;
struct TCP_Server_Info *server;
@@ -1379,16 +1397,37 @@ cifs_find_tcp_session(struct sockaddr_storage *addr)
if (server->tcpStatus == CifsNew)
continue;
- if (addr->ss_family == AF_INET &&
- (addr4->sin_addr.s_addr !=
- server->addr.sockAddr.sin_addr.s_addr))
- continue;
- else if (addr->ss_family == AF_INET6 &&
- (!ipv6_addr_equal(&server->addr.sockAddr6.sin6_addr,
- &addr6->sin6_addr) ||
- server->addr.sockAddr6.sin6_scope_id !=
- addr6->sin6_scope_id))
- continue;
+ switch (addr->ss_family) {
+ case AF_INET:
+ if (addr4->sin_addr.s_addr ==
+ server->addr.sockAddr.sin_addr.s_addr) {
+ addr4->sin_port = htons(port);
+ /* user overrode default port? */
+ if (addr4->sin_port) {
+ if (addr4->sin_port !=
+ server->addr.sockAddr.sin_port)
+ continue;
+ }
+ break;
+ } else
+ continue;
+
+ case AF_INET6:
+ if (ipv6_addr_equal(&addr6->sin6_addr,
+ &server->addr.sockAddr6.sin6_addr) &&
+ (addr6->sin6_scope_id ==
+ server->addr.sockAddr6.sin6_scope_id)) {
+ addr6->sin6_port = htons(port);
+ /* user overrode default port? */
+ if (addr6->sin6_port) {
+ if (addr6->sin6_port !=
+ server->addr.sockAddr6.sin6_port)
+ continue;
+ }
+ break;
+ } else
+ continue;
+ }
++server->srv_count;
write_unlock(&cifs_tcp_ses_lock);
@@ -1457,7 +1496,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
}
/* see if we already have a matching tcp_ses */
- tcp_ses = cifs_find_tcp_session(&addr);
+ tcp_ses = cifs_find_tcp_session(&addr, volume_info->port);
if (tcp_ses)
return tcp_ses;
@@ -1631,7 +1670,6 @@ cifs_put_tcon(struct cifsTconInfo *tcon)
CIFSSMBTDis(xid, tcon);
_FreeXid(xid);
- DeleteTconOplockQEntries(tcon);
tconInfoFree(tcon);
cifs_put_smb_ses(ses);
}
@@ -2544,11 +2582,20 @@ remote_path_check:
if (mount_data != mount_data_global)
kfree(mount_data);
+
mount_data = cifs_compose_mount_options(
cifs_sb->mountdata, full_path + 1,
referrals, &fake_devname);
- kfree(fake_devname);
+
free_dfs_info_array(referrals, num_referrals);
+ kfree(fake_devname);
+ kfree(full_path);
+
+ if (IS_ERR(mount_data)) {
+ rc = PTR_ERR(mount_data);
+ mount_data = NULL;
+ goto mount_fail_check;
+ }
if (tcon)
cifs_put_tcon(tcon);
@@ -2556,8 +2603,6 @@ remote_path_check:
cifs_put_smb_ses(pSesInfo);
cleanup_volume_info(&volume_info);
- FreeXid(xid);
- kfree(full_path);
referral_walks_count++;
goto try_mount_again;
}
@@ -2611,9 +2656,9 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
return -EIO;
smb_buffer = cifs_buf_get();
- if (smb_buffer == NULL) {
+ if (smb_buffer == NULL)
return -ENOMEM;
- }
+
smb_buffer_response = smb_buffer;
header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX,
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 4326ffd90fa9..627a60a6c1b1 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -24,6 +24,7 @@
#include <linux/stat.h>
#include <linux/slab.h>
#include <linux/namei.h>
+#include <linux/mount.h>
#include "cifsfs.h"
#include "cifspdu.h"
#include "cifsglob.h"
@@ -129,44 +130,45 @@ cifs_bp_rename_retry:
return full_path;
}
-static void
-cifs_fill_fileinfo(struct inode *newinode, __u16 fileHandle,
- struct cifsTconInfo *tcon, bool write_only)
+struct cifsFileInfo *
+cifs_new_fileinfo(struct inode *newinode, __u16 fileHandle,
+ struct file *file, struct vfsmount *mnt, unsigned int oflags)
{
int oplock = 0;
struct cifsFileInfo *pCifsFile;
struct cifsInodeInfo *pCifsInode;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(mnt->mnt_sb);
pCifsFile = kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
-
if (pCifsFile == NULL)
- return;
+ return pCifsFile;
if (oplockEnabled)
oplock = REQ_OPLOCK;
pCifsFile->netfid = fileHandle;
pCifsFile->pid = current->tgid;
- pCifsFile->pInode = newinode;
+ pCifsFile->pInode = igrab(newinode);
+ pCifsFile->mnt = mnt;
+ pCifsFile->pfile = file;
pCifsFile->invalidHandle = false;
pCifsFile->closePend = false;
mutex_init(&pCifsFile->fh_mutex);
mutex_init(&pCifsFile->lock_mutex);
INIT_LIST_HEAD(&pCifsFile->llist);
- atomic_set(&pCifsFile->wrtPending, 0);
+ atomic_set(&pCifsFile->count, 1);
+ slow_work_init(&pCifsFile->oplock_break, &cifs_oplock_break_ops);
- /* set the following in open now
- pCifsFile->pfile = file; */
write_lock(&GlobalSMBSeslock);
- list_add(&pCifsFile->tlist, &tcon->openFileList);
+ list_add(&pCifsFile->tlist, &cifs_sb->tcon->openFileList);
pCifsInode = CIFS_I(newinode);
if (pCifsInode) {
/* if readable file instance put first in list*/
- if (write_only)
+ if (oflags & FMODE_READ)
+ list_add(&pCifsFile->flist, &pCifsInode->openFileList);
+ else
list_add_tail(&pCifsFile->flist,
&pCifsInode->openFileList);
- else
- list_add(&pCifsFile->flist, &pCifsInode->openFileList);
if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
pCifsInode->clientCanCacheAll = true;
@@ -176,18 +178,18 @@ cifs_fill_fileinfo(struct inode *newinode, __u16 fileHandle,
pCifsInode->clientCanCacheRead = true;
}
write_unlock(&GlobalSMBSeslock);
+
+ return pCifsFile;
}
int cifs_posix_open(char *full_path, struct inode **pinode,
- struct super_block *sb, int mode, int oflags,
- int *poplock, __u16 *pnetfid, int xid)
+ struct vfsmount *mnt, int mode, int oflags,
+ __u32 *poplock, __u16 *pnetfid, int xid)
{
int rc;
- __u32 oplock;
- bool write_only = false;
FILE_UNIX_BASIC_INFO *presp_data;
__u32 posix_flags = 0;
- struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+ struct cifs_sb_info *cifs_sb = CIFS_SB(mnt->mnt_sb);
struct cifs_fattr fattr;
cFYI(1, ("posix open %s", full_path));
@@ -223,12 +225,9 @@ int cifs_posix_open(char *full_path, struct inode **pinode,
if (oflags & O_DIRECT)
posix_flags |= SMB_O_DIRECT;
- if (!(oflags & FMODE_READ))
- write_only = true;
-
mode &= ~current_umask();
rc = CIFSPOSIXCreate(xid, cifs_sb->tcon, posix_flags, mode,
- pnetfid, presp_data, &oplock, full_path,
+ pnetfid, presp_data, poplock, full_path,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc)
@@ -244,7 +243,7 @@ int cifs_posix_open(char *full_path, struct inode **pinode,
/* get new inode and set it up */
if (*pinode == NULL) {
- *pinode = cifs_iget(sb, &fattr);
+ *pinode = cifs_iget(mnt->mnt_sb, &fattr);
if (!*pinode) {
rc = -ENOMEM;
goto posix_open_ret;
@@ -253,7 +252,7 @@ int cifs_posix_open(char *full_path, struct inode **pinode,
cifs_fattr_to_inode(*pinode, &fattr);
}
- cifs_fill_fileinfo(*pinode, *pnetfid, cifs_sb->tcon, write_only);
+ cifs_new_fileinfo(*pinode, *pnetfid, NULL, mnt, oflags);
posix_open_ret:
kfree(presp_data);
@@ -280,7 +279,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
int rc = -ENOENT;
int xid;
int create_options = CREATE_NOT_DIR;
- int oplock = 0;
+ __u32 oplock = 0;
int oflags;
bool posix_create = false;
/*
@@ -298,7 +297,6 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
FILE_ALL_INFO *buf = NULL;
struct inode *newinode = NULL;
int disposition = FILE_OVERWRITE_IF;
- bool write_only = false;
xid = GetXid();
@@ -323,7 +321,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
if (tcon->unix_ext && (tcon->ses->capabilities & CAP_UNIX) &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
- rc = cifs_posix_open(full_path, &newinode, inode->i_sb,
+ rc = cifs_posix_open(full_path, &newinode, nd->path.mnt,
mode, oflags, &oplock, &fileHandle, xid);
/* EIO could indicate that (posix open) operation is not
supported, despite what server claimed in capability
@@ -351,11 +349,8 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
desiredAccess = 0;
if (oflags & FMODE_READ)
desiredAccess |= GENERIC_READ; /* is this too little? */
- if (oflags & FMODE_WRITE) {
+ if (oflags & FMODE_WRITE)
desiredAccess |= GENERIC_WRITE;
- if (!(oflags & FMODE_READ))
- write_only = true;
- }
if ((oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
disposition = FILE_CREATE;
@@ -470,8 +465,8 @@ cifs_create_set_dentry:
/* mknod case - do not leave file open */
CIFSSMBClose(xid, tcon, fileHandle);
} else if (!(posix_create) && (newinode)) {
- cifs_fill_fileinfo(newinode, fileHandle,
- cifs_sb->tcon, write_only);
+ cifs_new_fileinfo(newinode, fileHandle, NULL,
+ nd->path.mnt, oflags);
}
cifs_create_out:
kfree(buf);
@@ -611,7 +606,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
{
int xid;
int rc = 0; /* to get around spurious gcc warning, set to zero here */
- int oplock = 0;
+ __u32 oplock = 0;
__u16 fileHandle = 0;
bool posix_open = false;
struct cifs_sb_info *cifs_sb;
@@ -683,8 +678,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
if (!(nd->flags & (LOOKUP_PARENT | LOOKUP_DIRECTORY)) &&
(nd->flags & LOOKUP_OPEN) && !pTcon->broken_posix_open &&
(nd->intent.open.flags & O_CREAT)) {
- rc = cifs_posix_open(full_path, &newInode,
- parent_dir_inode->i_sb,
+ rc = cifs_posix_open(full_path, &newInode, nd->path.mnt,
nd->intent.open.create_mode,
nd->intent.open.flags, &oplock,
&fileHandle, xid);
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index c34b7f8a217b..429337eb7afe 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -30,6 +30,7 @@
#include <linux/writeback.h>
#include <linux/task_io_accounting_ops.h>
#include <linux/delay.h>
+#include <linux/mount.h>
#include <asm/div64.h>
#include "cifsfs.h"
#include "cifspdu.h"
@@ -39,29 +40,6 @@
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
-static inline struct cifsFileInfo *cifs_init_private(
- struct cifsFileInfo *private_data, struct inode *inode,
- struct file *file, __u16 netfid)
-{
- memset(private_data, 0, sizeof(struct cifsFileInfo));
- private_data->netfid = netfid;
- private_data->pid = current->tgid;
- mutex_init(&private_data->fh_mutex);
- mutex_init(&private_data->lock_mutex);
- INIT_LIST_HEAD(&private_data->llist);
- private_data->pfile = file; /* needed for writepage */
- private_data->pInode = inode;
- private_data->invalidHandle = false;
- private_data->closePend = false;
- /* we have to track num writers to the inode, since writepages
- does not tell us which handle the write is for so there can
- be a close (overlapping with write) of the filehandle that
- cifs_writepages chose to use */
- atomic_set(&private_data->wrtPending, 0);
-
- return private_data;
-}
-
static inline int cifs_convert_flags(unsigned int flags)
{
if ((flags & O_ACCMODE) == O_RDONLY)
@@ -125,9 +103,11 @@ static inline int cifs_get_disposition(unsigned int flags)
}
/* all arguments to this function must be checked for validity in caller */
-static inline int cifs_posix_open_inode_helper(struct inode *inode,
- struct file *file, struct cifsInodeInfo *pCifsInode,
- struct cifsFileInfo *pCifsFile, int oplock, u16 netfid)
+static inline int
+cifs_posix_open_inode_helper(struct inode *inode, struct file *file,
+ struct cifsInodeInfo *pCifsInode,
+ struct cifsFileInfo *pCifsFile, __u32 oplock,
+ u16 netfid)
{
write_lock(&GlobalSMBSeslock);
@@ -221,17 +201,6 @@ static inline int cifs_open_inode_helper(struct inode *inode, struct file *file,
struct timespec temp;
int rc;
- /* want handles we can use to read with first
- in the list so we do not have to walk the
- list to search for one in write_begin */
- if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
- list_add_tail(&pCifsFile->flist,
- &pCifsInode->openFileList);
- } else {
- list_add(&pCifsFile->flist,
- &pCifsInode->openFileList);
- }
- write_unlock(&GlobalSMBSeslock);
if (pCifsInode->clientCanCacheRead) {
/* we have the inode open somewhere else
no need to discard cache data */
@@ -281,7 +250,8 @@ client_can_cache:
int cifs_open(struct inode *inode, struct file *file)
{
int rc = -EACCES;
- int xid, oplock;
+ int xid;
+ __u32 oplock;
struct cifs_sb_info *cifs_sb;
struct cifsTconInfo *tcon;
struct cifsFileInfo *pCifsFile;
@@ -326,7 +296,7 @@ int cifs_open(struct inode *inode, struct file *file)
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
int oflags = (int) cifs_posix_convert_flags(file->f_flags);
/* can not refresh inode info since size could be stale */
- rc = cifs_posix_open(full_path, &inode, inode->i_sb,
+ rc = cifs_posix_open(full_path, &inode, file->f_path.mnt,
cifs_sb->mnt_file_mode /* ignored */,
oflags, &oplock, &netfid, xid);
if (rc == 0) {
@@ -416,24 +386,17 @@ int cifs_open(struct inode *inode, struct file *file)
cFYI(1, ("cifs_open returned 0x%x", rc));
goto out;
}
- file->private_data =
- kmalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
+
+ pCifsFile = cifs_new_fileinfo(inode, netfid, file, file->f_path.mnt,
+ file->f_flags);
+ file->private_data = pCifsFile;
if (file->private_data == NULL) {
rc = -ENOMEM;
goto out;
}
- pCifsFile = cifs_init_private(file->private_data, inode, file, netfid);
- write_lock(&GlobalSMBSeslock);
- list_add(&pCifsFile->tlist, &tcon->openFileList);
- pCifsInode = CIFS_I(file->f_path.dentry->d_inode);
- if (pCifsInode) {
- rc = cifs_open_inode_helper(inode, file, pCifsInode,
- pCifsFile, tcon,
- &oplock, buf, full_path, xid);
- } else {
- write_unlock(&GlobalSMBSeslock);
- }
+ rc = cifs_open_inode_helper(inode, file, pCifsInode, pCifsFile, tcon,
+ &oplock, buf, full_path, xid);
if (oplock & CIFS_CREATE_ACTION) {
/* time to set mode which we can not set earlier due to
@@ -476,7 +439,8 @@ static int cifs_relock_file(struct cifsFileInfo *cifsFile)
static int cifs_reopen_file(struct file *file, bool can_flush)
{
int rc = -EACCES;
- int xid, oplock;
+ int xid;
+ __u32 oplock;
struct cifs_sb_info *cifs_sb;
struct cifsTconInfo *tcon;
struct cifsFileInfo *pCifsFile;
@@ -545,7 +509,7 @@ reopen_error_exit:
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
int oflags = (int) cifs_posix_convert_flags(file->f_flags);
/* can not refresh inode info since size could be stale */
- rc = cifs_posix_open(full_path, NULL, inode->i_sb,
+ rc = cifs_posix_open(full_path, NULL, file->f_path.mnt,
cifs_sb->mnt_file_mode /* ignored */,
oflags, &oplock, &netfid, xid);
if (rc == 0) {
@@ -643,7 +607,7 @@ int cifs_close(struct inode *inode, struct file *file)
if (!pTcon->need_reconnect) {
write_unlock(&GlobalSMBSeslock);
timeout = 2;
- while ((atomic_read(&pSMBFile->wrtPending) != 0)
+ while ((atomic_read(&pSMBFile->count) != 1)
&& (timeout <= 2048)) {
/* Give write a better chance to get to
server ahead of the close. We do not
@@ -657,8 +621,6 @@ int cifs_close(struct inode *inode, struct file *file)
msleep(timeout);
timeout *= 4;
}
- if (atomic_read(&pSMBFile->wrtPending))
- cERROR(1, ("close with pending write"));
if (!pTcon->need_reconnect &&
!pSMBFile->invalidHandle)
rc = CIFSSMBClose(xid, pTcon,
@@ -681,24 +643,7 @@ int cifs_close(struct inode *inode, struct file *file)
list_del(&pSMBFile->flist);
list_del(&pSMBFile->tlist);
write_unlock(&GlobalSMBSeslock);
- timeout = 10;
- /* We waited above to give the SMBWrite a chance to issue
- on the wire (so we do not get SMBWrite returning EBADF
- if writepages is racing with close. Note that writepages
- does not specify a file handle, so it is possible for a file
- to be opened twice, and the application close the "wrong"
- file handle - in these cases we delay long enough to allow
- the SMBWrite to get on the wire before the SMB Close.
- We allow total wait here over 45 seconds, more than
- oplock break time, and more than enough to allow any write
- to complete on the server, or to time out on the client */
- while ((atomic_read(&pSMBFile->wrtPending) != 0)
- && (timeout <= 50000)) {
- cERROR(1, ("writes pending, delay free of handle"));
- msleep(timeout);
- timeout *= 8;
- }
- kfree(file->private_data);
+ cifsFileInfo_put(file->private_data);
file->private_data = NULL;
} else
rc = -EBADF;
@@ -1236,7 +1181,7 @@ struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *cifs_inode)
if (!open_file->invalidHandle) {
/* found a good file */
/* lock it so it will not be closed on us */
- atomic_inc(&open_file->wrtPending);
+ cifsFileInfo_get(open_file);
read_unlock(&GlobalSMBSeslock);
return open_file;
} /* else might as well continue, and look for
@@ -1276,7 +1221,7 @@ refind_writable:
if (open_file->pfile &&
((open_file->pfile->f_flags & O_RDWR) ||
(open_file->pfile->f_flags & O_WRONLY))) {
- atomic_inc(&open_file->wrtPending);
+ cifsFileInfo_get(open_file);
if (!open_file->invalidHandle) {
/* found a good writable file */
@@ -1293,7 +1238,7 @@ refind_writable:
else { /* start over in case this was deleted */
/* since the list could be modified */
read_lock(&GlobalSMBSeslock);
- atomic_dec(&open_file->wrtPending);
+ cifsFileInfo_put(open_file);
goto refind_writable;
}
}
@@ -1309,7 +1254,7 @@ refind_writable:
read_lock(&GlobalSMBSeslock);
/* can not use this handle, no write
pending on this one after all */
- atomic_dec(&open_file->wrtPending);
+ cifsFileInfo_put(open_file);
if (open_file->closePend) /* list could have changed */
goto refind_writable;
@@ -1373,7 +1318,7 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to)
if (open_file) {
bytes_written = cifs_write(open_file->pfile, write_data,
to-from, &offset);
- atomic_dec(&open_file->wrtPending);
+ cifsFileInfo_put(open_file);
/* Does mm or vfs already set times? */
inode->i_atime = inode->i_mtime = current_fs_time(inode->i_sb);
if ((bytes_written > 0) && (offset))
@@ -1562,7 +1507,7 @@ retry:
bytes_to_write, offset,
&bytes_written, iov, n_iov,
long_op);
- atomic_dec(&open_file->wrtPending);
+ cifsFileInfo_put(open_file);
cifs_update_eof(cifsi, offset, bytes_written);
if (rc || bytes_written < bytes_to_write) {
@@ -2329,6 +2274,73 @@ out:
return rc;
}
+static void
+cifs_oplock_break(struct slow_work *work)
+{
+ struct cifsFileInfo *cfile = container_of(work, struct cifsFileInfo,
+ oplock_break);
+ struct inode *inode = cfile->pInode;
+ struct cifsInodeInfo *cinode = CIFS_I(inode);
+ struct cifs_sb_info *cifs_sb = CIFS_SB(cfile->mnt->mnt_sb);
+ int rc, waitrc = 0;
+
+ if (inode && S_ISREG(inode->i_mode)) {
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+ if (cinode->clientCanCacheAll == 0)
+ break_lease(inode, FMODE_READ);
+ else if (cinode->clientCanCacheRead == 0)
+ break_lease(inode, FMODE_WRITE);
+#endif
+ rc = filemap_fdatawrite(inode->i_mapping);
+ if (cinode->clientCanCacheRead == 0) {
+ waitrc = filemap_fdatawait(inode->i_mapping);
+ invalidate_remote_inode(inode);
+ }
+ if (!rc)
+ rc = waitrc;
+ if (rc)
+ cinode->write_behind_rc = rc;
+ cFYI(1, ("Oplock flush inode %p rc %d", inode, rc));
+ }
+
+ /*
+ * releasing stale oplock after recent reconnect of smb session using
+ * a now incorrect file handle is not a data integrity issue but do
+ * not bother sending an oplock release if session to server still is
+ * disconnected since oplock already released by the server
+ */
+ if (!cfile->closePend && !cfile->oplock_break_cancelled) {
+ rc = CIFSSMBLock(0, cifs_sb->tcon, cfile->netfid, 0, 0, 0, 0,
+ LOCKING_ANDX_OPLOCK_RELEASE, false);
+ cFYI(1, ("Oplock release rc = %d", rc));
+ }
+}
+
+static int
+cifs_oplock_break_get(struct slow_work *work)
+{
+ struct cifsFileInfo *cfile = container_of(work, struct cifsFileInfo,
+ oplock_break);
+ mntget(cfile->mnt);
+ cifsFileInfo_get(cfile);
+ return 0;
+}
+
+static void
+cifs_oplock_break_put(struct slow_work *work)
+{
+ struct cifsFileInfo *cfile = container_of(work, struct cifsFileInfo,
+ oplock_break);
+ mntput(cfile->mnt);
+ cifsFileInfo_put(cfile);
+}
+
+const struct slow_work_ops cifs_oplock_break_ops = {
+ .get_ref = cifs_oplock_break_get,
+ .put_ref = cifs_oplock_break_put,
+ .execute = cifs_oplock_break,
+};
+
const struct address_space_operations cifs_addr_ops = {
.readpage = cifs_readpage,
.readpages = cifs_readpages,
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 82d83839655e..5e2492535daa 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -800,7 +800,7 @@ set_via_filehandle:
if (open_file == NULL)
CIFSSMBClose(xid, pTcon, netfid);
else
- atomic_dec(&open_file->wrtPending);
+ cifsFileInfo_put(open_file);
out:
return rc;
}
@@ -1557,57 +1557,24 @@ static int cifs_truncate_page(struct address_space *mapping, loff_t from)
static int cifs_vmtruncate(struct inode *inode, loff_t offset)
{
- struct address_space *mapping = inode->i_mapping;
- unsigned long limit;
+ loff_t oldsize;
+ int err;
spin_lock(&inode->i_lock);
- if (inode->i_size < offset)
- goto do_expand;
- /*
- * truncation of in-use swapfiles is disallowed - it would cause
- * subsequent swapout to scribble on the now-freed blocks.
- */
- if (IS_SWAPFILE(inode)) {
- spin_unlock(&inode->i_lock);
- goto out_busy;
- }
- i_size_write(inode, offset);
- spin_unlock(&inode->i_lock);
- /*
- * unmap_mapping_range is called twice, first simply for efficiency
- * so that truncate_inode_pages does fewer single-page unmaps. However
- * after this first call, and before truncate_inode_pages finishes,
- * it is possible for private pages to be COWed, which remain after
- * truncate_inode_pages finishes, hence the second unmap_mapping_range
- * call must be made for correctness.
- */
- unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
- truncate_inode_pages(mapping, offset);
- unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
- goto out_truncate;
-
-do_expand:
- limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
- if (limit != RLIM_INFINITY && offset > limit) {
+ err = inode_newsize_ok(inode, offset);
+ if (err) {
spin_unlock(&inode->i_lock);
- goto out_sig;
- }
- if (offset > inode->i_sb->s_maxbytes) {
- spin_unlock(&inode->i_lock);
- goto out_big;
+ goto out;
}
+
+ oldsize = inode->i_size;
i_size_write(inode, offset);
spin_unlock(&inode->i_lock);
-out_truncate:
+ truncate_pagecache(inode, oldsize, offset);
if (inode->i_op->truncate)
inode->i_op->truncate(inode);
- return 0;
-out_sig:
- send_sig(SIGXFSZ, current, 0);
-out_big:
- return -EFBIG;
-out_busy:
- return -ETXTBSY;
+out:
+ return err;
}
static int
@@ -1635,7 +1602,7 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
__u32 npid = open_file->pid;
rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, nfid,
npid, false);
- atomic_dec(&open_file->wrtPending);
+ cifsFileInfo_put(open_file);
cFYI(1, ("SetFSize for attrs rc = %d", rc));
if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
unsigned int bytes_written;
@@ -1790,7 +1757,7 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
u16 nfid = open_file->netfid;
u32 npid = open_file->pid;
rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid);
- atomic_dec(&open_file->wrtPending);
+ cifsFileInfo_put(open_file);
} else {
rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, args,
cifs_sb->local_nls,
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index e079a9190ec4..0241b25ac33f 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -32,7 +32,6 @@
extern mempool_t *cifs_sm_req_poolp;
extern mempool_t *cifs_req_poolp;
-extern struct task_struct *oplockThread;
/* The xid serves as a useful identifier for each incoming vfs request,
in a similar way to the mid which is useful to track each sent smb,
@@ -500,6 +499,7 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
struct cifsTconInfo *tcon;
struct cifsInodeInfo *pCifsInode;
struct cifsFileInfo *netfile;
+ int rc;
cFYI(1, ("Checking for oplock break or dnotify response"));
if ((pSMB->hdr.Command == SMB_COM_NT_TRANSACT) &&
@@ -562,30 +562,40 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
continue;
cifs_stats_inc(&tcon->num_oplock_brks);
- write_lock(&GlobalSMBSeslock);
+ read_lock(&GlobalSMBSeslock);
list_for_each(tmp2, &tcon->openFileList) {
netfile = list_entry(tmp2, struct cifsFileInfo,
tlist);
if (pSMB->Fid != netfile->netfid)
continue;
- write_unlock(&GlobalSMBSeslock);
- read_unlock(&cifs_tcp_ses_lock);
+ /*
+ * don't do anything if file is about to be
+ * closed anyway.
+ */
+ if (netfile->closePend) {
+ read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
+ return true;
+ }
+
cFYI(1, ("file id match, oplock break"));
pCifsInode = CIFS_I(netfile->pInode);
pCifsInode->clientCanCacheAll = false;
if (pSMB->OplockLevel == 0)
pCifsInode->clientCanCacheRead = false;
- pCifsInode->oplockPending = true;
- AllocOplockQEntry(netfile->pInode,
- netfile->netfid, tcon);
- cFYI(1, ("about to wake up oplock thread"));
- if (oplockThread)
- wake_up_process(oplockThread);
-
+ rc = slow_work_enqueue(&netfile->oplock_break);
+ if (rc) {
+ cERROR(1, ("failed to enqueue oplock "
+ "break: %d\n", rc));
+ } else {
+ netfile->oplock_break_cancelled = false;
+ }
+ read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
return true;
}
- write_unlock(&GlobalSMBSeslock);
+ read_unlock(&GlobalSMBSeslock);
read_unlock(&cifs_tcp_ses_lock);
cFYI(1, ("No matching file for oplock break"));
return true;
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index f823a4a208a7..1f098ca71636 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -146,7 +146,7 @@ cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb)
}
}
-void
+static void
cifs_dir_info_to_fattr(struct cifs_fattr *fattr, FILE_DIRECTORY_INFO *info,
struct cifs_sb_info *cifs_sb)
{
@@ -161,7 +161,7 @@ cifs_dir_info_to_fattr(struct cifs_fattr *fattr, FILE_DIRECTORY_INFO *info,
cifs_fill_common_info(fattr, cifs_sb);
}
-void
+static void
cifs_std_info_to_fattr(struct cifs_fattr *fattr, FIND_FILE_STANDARD_INFO *info,
struct cifs_sb_info *cifs_sb)
{
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 0ad3e2d116a6..07b8e71544ee 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -103,57 +103,6 @@ DeleteMidQEntry(struct mid_q_entry *midEntry)
mempool_free(midEntry, cifs_mid_poolp);
}
-struct oplock_q_entry *
-AllocOplockQEntry(struct inode *pinode, __u16 fid, struct cifsTconInfo *tcon)
-{
- struct oplock_q_entry *temp;
- if ((pinode == NULL) || (tcon == NULL)) {
- cERROR(1, ("Null parms passed to AllocOplockQEntry"));
- return NULL;
- }
- temp = (struct oplock_q_entry *) kmem_cache_alloc(cifs_oplock_cachep,
- GFP_KERNEL);
- if (temp == NULL)
- return temp;
- else {
- temp->pinode = pinode;
- temp->tcon = tcon;
- temp->netfid = fid;
- spin_lock(&GlobalMid_Lock);
- list_add_tail(&temp->qhead, &GlobalOplock_Q);
- spin_unlock(&GlobalMid_Lock);
- }
- return temp;
-
-}
-
-void DeleteOplockQEntry(struct oplock_q_entry *oplockEntry)
-{
- spin_lock(&GlobalMid_Lock);
- /* should we check if list empty first? */
- list_del(&oplockEntry->qhead);
- spin_unlock(&GlobalMid_Lock);
- kmem_cache_free(cifs_oplock_cachep, oplockEntry);
-}
-
-
-void DeleteTconOplockQEntries(struct cifsTconInfo *tcon)
-{
- struct oplock_q_entry *temp;
-
- if (tcon == NULL)
- return;
-
- spin_lock(&GlobalMid_Lock);
- list_for_each_entry(temp, &GlobalOplock_Q, qhead) {
- if ((temp->tcon) && (temp->tcon == tcon)) {
- list_del(&temp->qhead);
- kmem_cache_free(cifs_oplock_cachep, temp);
- }
- }
- spin_unlock(&GlobalMid_Lock);
-}
-
static int
smb_sendv(struct TCP_Server_Info *server, struct kvec *iov, int n_vec)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 04:24:58 +0000