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-rw-r--r--fs/afs/Makefile3
-rw-r--r--fs/afs/addr_list.c31
-rw-r--r--fs/afs/afs_fs.h1
-rw-r--r--fs/afs/afs_vl.h42
-rw-r--r--fs/afs/callback.c20
-rw-r--r--fs/afs/cell.c7
-rw-r--r--fs/afs/dir.c388
-rw-r--r--fs/afs/file.c37
-rw-r--r--fs/afs/flock.c108
-rw-r--r--fs/afs/fsclient.c347
-rw-r--r--fs/afs/inode.c50
-rw-r--r--fs/afs/internal.h453
-rw-r--r--fs/afs/main.c35
-rw-r--r--fs/afs/proc.c153
-rw-r--r--fs/afs/rotate.c461
-rw-r--r--fs/afs/rxrpc.c45
-rw-r--r--fs/afs/security.c2
-rw-r--r--fs/afs/server.c750
-rw-r--r--fs/afs/server_list.c153
-rw-r--r--fs/afs/super.c92
-rw-r--r--fs/afs/vlclient.c307
-rw-r--r--fs/afs/vlocation.c669
-rw-r--r--fs/afs/vnode.c750
-rw-r--r--fs/afs/volume.c426
-rw-r--r--fs/afs/write.c38
-rw-r--r--fs/afs/xattr.c2
26 files changed, 2795 insertions, 2575 deletions
diff --git a/fs/afs/Makefile b/fs/afs/Makefile
index 192d476d7c76..45b7fc405fa6 100644
--- a/fs/afs/Makefile
+++ b/fs/afs/Makefile
@@ -24,11 +24,10 @@ kafs-objs := \
rxrpc.o \
security.o \
server.o \
+ server_list.o \
super.o \
netdevices.o \
vlclient.o \
- vlocation.o \
- vnode.o \
volume.o \
write.o \
xattr.o
diff --git a/fs/afs/addr_list.c b/fs/afs/addr_list.c
index ecb9c72aebd2..b91e59a77f0e 100644
--- a/fs/afs/addr_list.c
+++ b/fs/afs/addr_list.c
@@ -228,6 +228,37 @@ struct afs_addr_list *afs_dns_query(struct afs_cell *cell, time64_t *_expiry)
}
/*
+ * Merge an IPv4 entry into a fileserver address list.
+ */
+void afs_merge_fs_addr4(struct afs_addr_list *alist, __be32 xdr)
+{
+ struct sockaddr_in6 *a;
+ int i;
+
+ for (i = 0; i < alist->nr_ipv4; i++) {
+ a = &alist->addrs[i].transport.sin6;
+ if (xdr == a->sin6_addr.s6_addr32[3])
+ return;
+ if (xdr < a->sin6_addr.s6_addr32[3])
+ break;
+ }
+
+ if (i < alist->nr_addrs)
+ memmove(alist->addrs + i + 1,
+ alist->addrs + i,
+ sizeof(alist->addrs[0]) * (alist->nr_addrs - i));
+
+ a = &alist->addrs[i].transport.sin6;
+ a->sin6_port = htons(AFS_FS_PORT);
+ a->sin6_addr.s6_addr32[0] = 0;
+ a->sin6_addr.s6_addr32[1] = 0;
+ a->sin6_addr.s6_addr32[2] = htonl(0xffff);
+ a->sin6_addr.s6_addr32[3] = xdr;
+ alist->nr_ipv4++;
+ alist->nr_addrs++;
+}
+
+/*
* Get an address to try.
*/
bool afs_iterate_addresses(struct afs_addr_cursor *ac)
diff --git a/fs/afs/afs_fs.h b/fs/afs/afs_fs.h
index 05395d0f1941..d47b6d01e4c0 100644
--- a/fs/afs/afs_fs.h
+++ b/fs/afs/afs_fs.h
@@ -38,6 +38,7 @@ enum AFS_FS_Operations {
FSFETCHDATA64 = 65537, /* AFS Fetch file data */
FSSTOREDATA64 = 65538, /* AFS Store file data */
FSGIVEUPALLCALLBACKS = 65539, /* AFS Give up all outstanding callbacks on a server */
+ FSGETCAPABILITIES = 65540, /* Probe and get the capabilities of a fileserver */
};
enum AFS_FS_Errors {
diff --git a/fs/afs/afs_vl.h b/fs/afs/afs_vl.h
index 4eaa620992c8..6350b417aee9 100644
--- a/fs/afs/afs_vl.h
+++ b/fs/afs/afs_vl.h
@@ -88,4 +88,46 @@ struct afs_vldbentry {
#define AFS_VLDB_MAXNAMELEN 65
+
+struct afs_ListAddrByAttributes__xdr {
+ __be32 Mask;
+#define AFS_VLADDR_IPADDR 0x1 /* Match by ->ipaddr */
+#define AFS_VLADDR_INDEX 0x2 /* Match by ->index */
+#define AFS_VLADDR_UUID 0x4 /* Match by ->uuid */
+ __be32 ipaddr;
+ __be32 index;
+ __be32 spare;
+ struct afs_uuid__xdr uuid;
+};
+
+struct afs_uvldbentry__xdr {
+ __be32 name[AFS_VLDB_MAXNAMELEN];
+ __be32 nServers;
+ struct afs_uuid__xdr serverNumber[AFS_NMAXNSERVERS];
+ __be32 serverUnique[AFS_NMAXNSERVERS];
+ __be32 serverPartition[AFS_NMAXNSERVERS];
+ __be32 serverFlags[AFS_NMAXNSERVERS];
+ __be32 volumeId[AFS_MAXTYPES];
+ __be32 cloneId;
+ __be32 flags;
+ __be32 spares1;
+ __be32 spares2;
+ __be32 spares3;
+ __be32 spares4;
+ __be32 spares5;
+ __be32 spares6;
+ __be32 spares7;
+ __be32 spares8;
+ __be32 spares9;
+};
+
+struct afs_address_list {
+ refcount_t usage;
+ unsigned int version;
+ unsigned int nr_addrs;
+ struct sockaddr_rxrpc addrs[];
+};
+
+extern void afs_put_address_list(struct afs_address_list *alist);
+
#endif /* AFS_VL_H */
diff --git a/fs/afs/callback.c b/fs/afs/callback.c
index 82f4c7a3b7b6..f4291b576054 100644
--- a/fs/afs/callback.c
+++ b/fs/afs/callback.c
@@ -26,10 +26,10 @@
* - Called with volume->server_sem held.
*/
int afs_register_server_cb_interest(struct afs_vnode *vnode,
- struct afs_cb_interest **ppcbi,
- struct afs_server *server)
+ struct afs_server_entry *entry)
{
- struct afs_cb_interest *cbi = *ppcbi, *vcbi, *new, *x;
+ struct afs_cb_interest *cbi = entry->cb_interest, *vcbi, *new, *x;
+ struct afs_server *server = entry->server;
again:
vcbi = vnode->cb_interest;
@@ -47,7 +47,7 @@ again:
if (!cbi && vcbi->server == server) {
afs_get_cb_interest(vcbi);
- x = cmpxchg(ppcbi, cbi, vcbi);
+ x = cmpxchg(&entry->cb_interest, cbi, vcbi);
if (x != cbi) {
cbi = x;
afs_put_cb_interest(afs_v2net(vnode), vcbi);
@@ -72,7 +72,7 @@ again:
list_add_tail(&new->cb_link, &server->cb_interests);
write_unlock(&server->cb_break_lock);
- x = cmpxchg(ppcbi, cbi, new);
+ x = cmpxchg(&entry->cb_interest, cbi, new);
if (x == cbi) {
cbi = new;
} else {
@@ -137,7 +137,7 @@ void afs_put_cb_interest(struct afs_net *net, struct afs_cb_interest *cbi)
*/
void afs_init_callback_state(struct afs_server *server)
{
- if (!test_and_clear_bit(AFS_SERVER_NEW, &server->flags))
+ if (!test_and_clear_bit(AFS_SERVER_FL_NEW, &server->flags))
server->cb_s_break++;
}
@@ -233,12 +233,12 @@ void afs_break_callbacks(struct afs_server *server, size_t count,
/*
* Clear the callback interests in a server list.
*/
-void afs_clear_callback_interests(struct afs_net *net, struct afs_volume *volume)
+void afs_clear_callback_interests(struct afs_net *net, struct afs_server_list *slist)
{
int i;
- for (i = 0; i < ARRAY_SIZE(volume->cb_interests); i++) {
- afs_put_cb_interest(net, volume->cb_interests[i]);
- volume->cb_interests[i] = NULL;
+ for (i = 0; i < slist->nr_servers; i++) {
+ afs_put_cb_interest(net, slist->servers[i].cb_interest);
+ slist->servers[i].cb_interest = NULL;
}
}
diff --git a/fs/afs/cell.c b/fs/afs/cell.c
index a0e08d3a108c..1858c91169e4 100644
--- a/fs/afs/cell.c
+++ b/fs/afs/cell.c
@@ -146,13 +146,10 @@ static struct afs_cell *afs_alloc_cell(struct afs_net *net,
atomic_set(&cell->usage, 2);
INIT_WORK(&cell->manager, afs_manage_cell);
- rwlock_init(&cell->servers_lock);
- INIT_LIST_HEAD(&cell->servers);
- init_rwsem(&cell->vl_sem);
- INIT_LIST_HEAD(&cell->vl_list);
- spin_lock_init(&cell->vl_lock);
cell->flags = ((1 << AFS_CELL_FL_NOT_READY) |
(1 << AFS_CELL_FL_NO_LOOKUP_YET));
+ INIT_LIST_HEAD(&cell->proc_volumes);
+ rwlock_init(&cell->proc_lock);
rwlock_init(&cell->vl_addrs_lock);
/* Fill in the VL server list if we were given a list of addresses to
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 37083699a0df..53f3917440e7 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -553,7 +553,7 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
dentry->d_fsdata = (void *)(unsigned long) vnode->status.data_version;
/* instantiate the dentry */
- inode = afs_iget(dir->i_sb, key, &fid, NULL, NULL);
+ inode = afs_iget(dir->i_sb, key, &fid, NULL, NULL, NULL);
key_put(key);
if (IS_ERR(inode)) {
_leave(" = %ld", PTR_ERR(inode));
@@ -741,20 +741,48 @@ static void afs_d_release(struct dentry *dentry)
}
/*
+ * Create a new inode for create/mkdir/symlink
+ */
+static void afs_vnode_new_inode(struct afs_fs_cursor *fc,
+ struct dentry *new_dentry,
+ struct afs_fid *newfid,
+ struct afs_file_status *newstatus,
+ struct afs_callback *newcb)
+{
+ struct inode *inode;
+
+ if (fc->ac.error < 0)
+ return;
+
+ inode = afs_iget(fc->vnode->vfs_inode.i_sb, fc->key,
+ newfid, newstatus, newcb, fc->cbi);
+ if (IS_ERR(inode)) {
+ /* ENOMEM or EINTR at a really inconvenient time - just abandon
+ * the new directory on the server.
+ */
+ fc->ac.error = PTR_ERR(inode);
+ return;
+ }
+
+ d_instantiate(new_dentry, inode);
+ if (d_unhashed(new_dentry))
+ d_rehash(new_dentry);
+}
+
+/*
* create a directory on an AFS filesystem
*/
static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
{
- struct afs_file_status status;
- struct afs_callback cb;
- struct afs_server *server;
- struct afs_vnode *dvnode, *vnode;
- struct afs_fid fid;
- struct inode *inode;
+ struct afs_file_status newstatus;
+ struct afs_fs_cursor fc;
+ struct afs_callback newcb;
+ struct afs_vnode *dvnode = AFS_FS_I(dir);
+ struct afs_fid newfid;
struct key *key;
int ret;
- dvnode = AFS_FS_I(dir);
+ mode |= S_IFDIR;
_enter("{%x:%u},{%pd},%ho",
dvnode->fid.vid, dvnode->fid.vnode, dentry, mode);
@@ -765,40 +793,27 @@ static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
goto error;
}
- mode |= S_IFDIR;
- ret = afs_vnode_create(dvnode, key, dentry->d_name.name,
- mode, &fid, &status, &cb, &server);
- if (ret < 0)
- goto mkdir_error;
+ ret = -ERESTARTSYS;
+ if (afs_begin_vnode_operation(&fc, dvnode, key)) {
+ while (afs_select_fileserver(&fc)) {
+ fc.cb_break = dvnode->cb_break + dvnode->cb_s_break;
+ afs_fs_create(&fc, dentry->d_name.name, mode,
+ &newfid, &newstatus, &newcb);
+ }
- inode = afs_iget(dir->i_sb, key, &fid, &status, &cb);
- if (IS_ERR(inode)) {
- /* ENOMEM at a really inconvenient time - just abandon the new
- * directory on the server */
- ret = PTR_ERR(inode);
- goto iget_error;
+ afs_check_for_remote_deletion(&fc, fc.vnode);
+ afs_vnode_commit_status(&fc, dvnode, fc.cb_break);
+ afs_vnode_new_inode(&fc, dentry, &newfid, &newstatus, &newcb);
+ ret = afs_end_vnode_operation(&fc);
+ if (ret < 0)
+ goto error_key;
}
- /* apply the status report we've got for the new vnode */
- vnode = AFS_FS_I(inode);
- spin_lock(&vnode->lock);
- vnode->update_cnt++;
- spin_unlock(&vnode->lock);
- afs_vnode_finalise_status_update(vnode, server);
- afs_put_server(afs_i2net(dir), server);
-
- d_instantiate(dentry, inode);
- if (d_unhashed(dentry)) {
- _debug("not hashed");
- d_rehash(dentry);
- }
key_put(key);
_leave(" = 0");
return 0;
-iget_error:
- afs_put_server(afs_i2net(dir), server);
-mkdir_error:
+error_key:
key_put(key);
error:
d_drop(dentry);
@@ -807,16 +822,29 @@ error:
}
/*
+ * Remove a subdir from a directory.
+ */
+static void afs_dir_remove_subdir(struct dentry *dentry)
+{
+ if (d_really_is_positive(dentry)) {
+ struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry));
+
+ clear_nlink(&vnode->vfs_inode);
+ set_bit(AFS_VNODE_DELETED, &vnode->flags);
+ clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
+ }
+}
+
+/*
* remove a directory from an AFS filesystem
*/
static int afs_rmdir(struct inode *dir, struct dentry *dentry)
{
- struct afs_vnode *dvnode, *vnode;
+ struct afs_fs_cursor fc;
+ struct afs_vnode *dvnode = AFS_FS_I(dir);
struct key *key;
int ret;
- dvnode = AFS_FS_I(dir);
-
_enter("{%x:%u},{%pd}",
dvnode->fid.vid, dvnode->fid.vnode, dentry);
@@ -826,45 +854,69 @@ static int afs_rmdir(struct inode *dir, struct dentry *dentry)
goto error;
}
- ret = afs_vnode_remove(dvnode, key, dentry->d_name.name, true);
- if (ret < 0)
- goto rmdir_error;
+ ret = -ERESTARTSYS;
+ if (afs_begin_vnode_operation(&fc, dvnode, key)) {
+ while (afs_select_fileserver(&fc)) {
+ fc.cb_break = dvnode->cb_break + dvnode->cb_s_break;
+ afs_fs_remove(&fc, dentry->d_name.name, true);
+ }
- if (d_really_is_positive(dentry)) {
- vnode = AFS_FS_I(d_inode(dentry));
- clear_nlink(&vnode->vfs_inode);
- set_bit(AFS_VNODE_DELETED, &vnode->flags);
- clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
+ afs_vnode_commit_status(&fc, dvnode, fc.cb_break);
+ ret = afs_end_vnode_operation(&fc);
+ if (ret == 0)
+ afs_dir_remove_subdir(dentry);
}
key_put(key);
- _leave(" = 0");
- return 0;
-
-rmdir_error:
- key_put(key);
error:
- _leave(" = %d", ret);
return ret;
}
/*
- * remove a file from an AFS filesystem
+ * Remove a link to a file or symlink from a directory.
+ *
+ * If the file was not deleted due to excess hard links, the fileserver will
+ * break the callback promise on the file - if it had one - before it returns
+ * to us, and if it was deleted, it won't
+ *
+ * However, if we didn't have a callback promise outstanding, or it was
+ * outstanding on a different server, then it won't break it either...
+ */
+static int afs_dir_remove_link(struct dentry *dentry, struct key *key)
+{
+ int ret = 0;
+
+ if (d_really_is_positive(dentry)) {
+ struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry));
+
+ if (test_bit(AFS_VNODE_DELETED, &vnode->flags))
+ kdebug("AFS_VNODE_DELETED");
+ clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
+
+ ret = afs_validate(vnode, key);
+ if (ret == -ESTALE)
+ ret = 0;
+ _debug("nlink %d [val %d]", vnode->vfs_inode.i_nlink, ret);
+ }
+
+ return ret;
+}
+
+/*
+ * Remove a file or symlink from an AFS filesystem.
*/
static int afs_unlink(struct inode *dir, struct dentry *dentry)
{
- struct afs_vnode *dvnode, *vnode;
+ struct afs_fs_cursor fc;
+ struct afs_vnode *dvnode = AFS_FS_I(dir), *vnode;
struct key *key;
int ret;
- dvnode = AFS_FS_I(dir);
-
_enter("{%x:%u},{%pd}",
dvnode->fid.vid, dvnode->fid.vnode, dentry);
- ret = -ENAMETOOLONG;
if (dentry->d_name.len >= AFSNAMEMAX)
- goto error;
+ return -ENAMETOOLONG;
key = afs_request_key(dvnode->volume->cell);
if (IS_ERR(key)) {
@@ -872,42 +924,28 @@ static int afs_unlink(struct inode *dir, struct dentry *dentry)
goto error;
}
+ /* Try to make sure we have a callback promise on the victim. */
if (d_really_is_positive(dentry)) {
vnode = AFS_FS_I(d_inode(dentry));
-
- /* make sure we have a callback promise on the victim */
ret = afs_validate(vnode, key);
if (ret < 0)
- goto error;
+ goto error_key;
}
- ret = afs_vnode_remove(dvnode, key, dentry->d_name.name, false);
- if (ret < 0)
- goto remove_error;
+ ret = -ERESTARTSYS;
+ if (afs_begin_vnode_operation(&fc, dvnode, key)) {
+ while (afs_select_fileserver(&fc)) {
+ fc.cb_break = dvnode->cb_break + dvnode->cb_s_break;
+ afs_fs_remove(&fc, dentry->d_name.name, false);
+ }
- if (d_really_is_positive(dentry)) {
- /* if the file wasn't deleted due to excess hard links, the
- * fileserver will break the callback promise on the file - if
- * it had one - before it returns to us, and if it was deleted,
- * it won't
- *
- * however, if we didn't have a callback promise outstanding,
- * or it was outstanding on a different server, then it won't
- * break it either...
- */
- vnode = AFS_FS_I(d_inode(dentry));
- if (test_bit(AFS_VNODE_DELETED, &vnode->flags))
- _debug("AFS_VNODE_DELETED");
- clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
- ret = afs_validate(vnode, key);
- _debug("nlink %d [val %d]", vnode->vfs_inode.i_nlink, ret);
+ afs_vnode_commit_status(&fc, dvnode, fc.cb_break);
+ ret = afs_end_vnode_operation(&fc);
+ if (ret == 0)
+ ret = afs_dir_remove_link(dentry, key);
}
- key_put(key);
- _leave(" = 0");
- return 0;
-
-remove_error:
+error_key:
key_put(key);
error:
_leave(" = %d", ret);
@@ -920,60 +958,50 @@ error:
static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
bool excl)
{
- struct afs_file_status status;
- struct afs_callback cb;
- struct afs_server *server;
- struct afs_vnode *dvnode, *vnode;
- struct afs_fid fid;
- struct inode *inode;
+ struct afs_fs_cursor fc;
+ struct afs_file_status newstatus;
+ struct afs_callback newcb;
+ struct afs_vnode *dvnode = dvnode = AFS_FS_I(dir);
+ struct afs_fid newfid;
struct key *key;
int ret;
- dvnode = AFS_FS_I(dir);
+ mode |= S_IFREG;
_enter("{%x:%u},{%pd},%ho,",
dvnode->fid.vid, dvnode->fid.vnode, dentry, mode);
+ ret = -ENAMETOOLONG;
+ if (dentry->d_name.len >= AFSNAMEMAX)
+ goto error;
+
key = afs_request_key(dvnode->volume->cell);
if (IS_ERR(key)) {
ret = PTR_ERR(key);
goto error;
}
- mode |= S_IFREG;
- ret = afs_vnode_create(dvnode, key, dentry->d_name.name,
- mode, &fid, &status, &cb, &server);
- if (ret < 0)
- goto create_error;
+ ret = -ERESTARTSYS;
+ if (afs_begin_vnode_operation(&fc, dvnode, key)) {
+ while (afs_select_fileserver(&fc)) {
+ fc.cb_break = dvnode->cb_break + dvnode->cb_s_break;
+ afs_fs_create(&fc, dentry->d_name.name, mode,
+ &newfid, &newstatus, &newcb);
+ }
- inode = afs_iget(dir->i_sb, key, &fid, &status, &cb);
- if (IS_ERR(inode)) {
- /* ENOMEM at a really inconvenient time - just abandon the new
- * directory on the server */
- ret = PTR_ERR(inode);
- goto iget_error;
+ afs_check_for_remote_deletion(&fc, fc.vnode);
+ afs_vnode_commit_status(&fc, dvnode, fc.cb_break);
+ afs_vnode_new_inode(&fc, dentry, &newfid, &newstatus, &newcb);
+ ret = afs_end_vnode_operation(&fc);
+ if (ret < 0)
+ goto error_key;
}
- /* apply the status report we've got for the new vnode */
- vnode = AFS_FS_I(inode);
- spin_lock(&vnode->lock);
- vnode->update_cnt++;
- spin_unlock(&vnode->lock);
- afs_vnode_finalise_status_update(vnode, server);
- afs_put_server(afs_i2net(dir), server);
-
- d_instantiate(dentry, inode);
- if (d_unhashed(dentry)) {
- _debug("not hashed");
- d_rehash(dentry);
- }
key_put(key);
_leave(" = 0");
return 0;
-iget_error:
- afs_put_server(afs_i2net(dir), server);
-create_error:
+error_key:
key_put(key);
error:
d_drop(dentry);
@@ -987,6 +1015,7 @@ error:
static int afs_link(struct dentry *from, struct inode *dir,
struct dentry *dentry)
{
+ struct afs_fs_cursor fc;
struct afs_vnode *dvnode, *vnode;
struct key *key;
int ret;
@@ -999,23 +1028,45 @@ static int afs_link(struct dentry *from, struct inode *dir,
dvnode->fid.vid, dvnode->fid.vnode,
dentry);
+ ret = -ENAMETOOLONG;
+ if (dentry->d_name.len >= AFSNAMEMAX)
+ goto error;
+
key = afs_request_key(dvnode->volume->cell);
if (IS_ERR(key)) {
ret = PTR_ERR(key);
goto error;
}
- ret = afs_vnode_link(dvnode, vnode, key, dentry->d_name.name);
- if (ret < 0)
- goto link_error;
+ ret = -ERESTARTSYS;
+ if (afs_begin_vnode_operation(&fc, dvnode, key)) {
+ if (mutex_lock_interruptible_nested(&vnode->io_lock, 1) < 0) {
+ afs_end_vnode_operation(&fc);
+ return -ERESTARTSYS;
+ }
+
+ while (afs_select_fileserver(&fc)) {
+ fc.cb_break = dvnode->cb_break + dvnode->cb_s_break;
+ fc.cb_break_2 = vnode->cb_break + vnode->cb_s_break;
+ afs_fs_link(&fc, vnode, dentry->d_name.name);
+ }
+
+ afs_vnode_commit_status(&fc, dvnode, fc.cb_break);
+ afs_vnode_commit_status(&fc, vnode, fc.cb_break_2);
+ ihold(&vnode->vfs_inode);
+ d_instantiate(dentry, &vnode->vfs_inode);
+
+ mutex_unlock(&vnode->io_lock);
+ ret = afs_end_vnode_operation(&fc);
+ if (ret < 0)
+ goto error_key;
+ }
- ihold(&vnode->vfs_inode);
- d_instantiate(dentry, &vnode->vfs_inode);
key_put(key);
_leave(" = 0");
return 0;
-link_error:
+error_key:
key_put(key);
error:
d_drop(dentry);
@@ -1029,20 +1080,21 @@ error:
static int afs_symlink(struct inode *dir, struct dentry *dentry,
const char *content)
{
- struct afs_file_status status;
- struct afs_server *server;
- struct afs_vnode *dvnode, *vnode;
- struct afs_fid fid;
- struct inode *inode;
+ struct afs_fs_cursor fc;
+ struct afs_file_status newstatus;
+ struct afs_vnode *dvnode = AFS_FS_I(dir);
+ struct afs_fid newfid;
struct key *key;
int ret;
- dvnode = AFS_FS_I(dir);
-
_enter("{%x:%u},{%pd},%s",
dvnode->fid.vid, dvnode->fid.vnode, dentry,
content);
+ ret = -ENAMETOOLONG;
+ if (dentry->d_name.len >= AFSNAMEMAX)
+ goto error;
+
ret = -EINVAL;
if (strlen(content) >= AFSPATHMAX)
goto error;
@@ -1053,39 +1105,27 @@ static int afs_symlink(struct inode *dir, struct dentry *dentry,
goto error;
}
- ret = afs_vnode_symlink(dvnode, key, dentry->d_name.name, content,
- &fid, &status, &server);
- if (ret < 0)
- goto create_error;
+ ret = -ERESTARTSYS;
+ if (afs_begin_vnode_operation(&fc, dvnode, key)) {
+ while (afs_select_fileserver(&fc)) {
+ fc.cb_break = dvnode->cb_break + dvnode->cb_s_break;
+ afs_fs_symlink(&fc, dentry->d_name.name, content,
+ &newfid, &newstatus);
+ }
- inode = afs_iget(dir->i_sb, key, &fid, &status, NULL);
- if (IS_ERR(inode)) {
- /* ENOMEM at a really inconvenient time - just abandon the new
- * directory on the server */
- ret = PTR_ERR(inode);
- goto iget_error;
+ afs_check_for_remote_deletion(&fc, fc.vnode);
+ afs_vnode_commit_status(&fc, dvnode, fc.cb_break);
+ afs_vnode_new_inode(&fc, dentry, &newfid, &newstatus, NULL);
+ ret = afs_end_vnode_operation(&fc);
+ if (ret < 0)
+ goto error_key;
}
- /* apply the status report we've got for the new vnode */
- vnode = AFS_FS_I(inode);
- spin_lock(&vnode->lock);
- vnode->update_cnt++;
- spin_unlock(&vnode->lock);
- afs_vnode_finalise_status_update(vnode, server);
- afs_put_server(afs_i2net(dir), server);
-
- d_instantiate(dentry, inode);
- if (d_unhashed(dentry)) {
- _debug("not hashed");
- d_rehash(dentry);
- }
key_put(key);
_leave(" = 0");
return 0;
-iget_error:
- afs_put_server(afs_i2net(dir), server);
-create_error:
+error_key:
key_put(key);
error:
d_drop(dentry);
@@ -1100,6 +1140,7 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry,
unsigned int flags)
{
+ struct afs_fs_cursor fc;
struct afs_vnode *orig_dvnode, *new_dvnode, *vnode;
struct key *key;
int ret;
@@ -1123,16 +1164,35 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
goto error;
}
- ret = afs_vnode_rename(orig_dvnode, new_dvnode, key,
- old_dentry->d_name.name,
- new_dentry->d_name.name);
- if (ret < 0)
- goto rename_error;
+ ret = -ERESTARTSYS;
+ if (afs_begin_vnode_operation(&fc, orig_dvnode, key)) {
+ if (orig_dvnode != new_dvnode) {
+ if (mutex_lock_interruptible_nested(&new_dvnode->io_lock, 1) < 0) {
+ afs_end_vnode_operation(&fc);
+ return -ERESTARTSYS;
+ }
+ }
+ while (afs_select_fileserver(&fc)) {
+ fc.cb_break = orig_dvnode->cb_break + orig_dvnode->cb_s_break;
+ fc.cb_break_2 = new_dvnode->cb_break + new_dvnode->cb_s_break;
+ afs_fs_rename(&fc, old_dentry->d_name.name,
+ new_dvnode, new_dentry->d_name.name);
+ }
+
+ afs_vnode_commit_status(&fc, orig_dvnode, fc.cb_break);
+ afs_vnode_commit_status(&fc, new_dvnode, fc.cb_break_2);
+ if (orig_dvnode != new_dvnode)
+ mutex_unlock(&new_dvnode->io_lock);
+ ret = afs_end_vnode_operation(&fc);
+ if (ret < 0)
+ goto error_key;
+ }
+
key_put(key);
_leave(" = 0");
return 0;
-rename_error:
+error_key:
key_put(key);
error:
d_drop(new_dentry);
diff --git a/fs/afs/file.c b/fs/afs/file.c
index 08f9f0c5dfac..1f26ac9f816d 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -138,6 +138,37 @@ static void afs_file_readpage_read_complete(struct page *page,
#endif
/*
+ * Fetch file data from the volume.
+ */
+int afs_fetch_data(struct afs_vnode *vnode, struct key *key, struct afs_read *desc)
+{
+ struct afs_fs_cursor fc;
+ int ret;
+
+ _enter("%s{%x:%u.%u},%x,,,",
+ vnode->volume->name,
+ vnode->fid.vid,
+ vnode->fid.vnode,
+ vnode->fid.unique,
+ key_serial(key));
+
+ ret = -ERESTARTSYS;
+ if (afs_begin_vnode_operation(&fc, vnode, key)) {
+ while (afs_select_fileserver(&fc)) {
+ fc.cb_break = vnode->cb_break + vnode->cb_s_break;
+ afs_fs_fetch_data(&fc, desc);
+ }
+
+ afs_check_for_remote_deletion(&fc, fc.vnode);
+ afs_vnode_commit_status(&fc, vnode, fc.cb_break);
+ ret = afs_end_vnode_operation(&fc);
+ }
+
+ _leave(" = %d", ret);
+ return ret;
+}
+
+/*
* read page from file, directory or symlink, given a key to use
*/
int afs_page_filler(void *data, struct page *page)
@@ -199,7 +230,7 @@ int afs_page_filler(void *data, struct page *page)
/* read the contents of the file from the server into the
* page */
- ret = afs_vnode_fetch_data(vnode, key, req);
+ ret = afs_fetch_data(vnode, key, req);
afs_put_read(req);
if (ret < 0) {
if (ret == -ENOENT) {
@@ -264,7 +295,7 @@ static int afs_readpage(struct file *file, struct page *page)
ret = afs_page_filler(key, page);
} else {
struct inode *inode = page->mapping->host;
- key = afs_request_key(AFS_FS_S(inode->i_sb)->volume->cell);
+ key = afs_request_key(AFS_FS_S(inode->i_sb)->cell);
if (IS_ERR(key)) {
ret = PTR_ERR(key);
} else {
@@ -369,7 +400,7 @@ static int afs_readpages_one(struct file *file, struct address_space *mapping,
return 0;
}
- ret = afs_vnode_fetch_data(vnode, key, req);
+ ret = afs_fetch_data(vnode, key, req);
if (ret < 0)
goto error;
diff --git a/fs/afs/flock.c b/fs/afs/flock.c
index 2b31ea58c50c..77b0a4606efd 100644
--- a/fs/afs/flock.c
+++ b/fs/afs/flock.c
@@ -68,6 +68,100 @@ static void afs_grant_locks(struct afs_vnode *vnode, struct file_lock *fl)
}
/*
+ * Get a lock on a file
+ */
+static int afs_set_lock(struct afs_vnode *vnode, struct key *key,
+ afs_lock_type_t type)
+{
+ struct afs_fs_cursor fc;
+ int ret;
+
+ _enter("%s{%x:%u.%u},%x,%u",
+ vnode->volume->name,
+ vnode->fid.vid,
+ vnode->fid.vnode,
+ vnode->fid.unique,
+ key_serial(key), type);
+
+ ret = -ERESTARTSYS;
+ if (afs_begin_vnode_operation(&fc, vnode, key)) {
+ while (afs_select_fileserver(&fc)) {
+ fc.cb_break = vnode->cb_break + vnode->cb_s_break;
+ afs_fs_set_lock(&fc, type);
+ }
+
+ afs_check_for_remote_deletion(&fc, fc.vnode);
+ afs_vnode_commit_status(&fc, vnode, fc.cb_break);
+ ret = afs_end_vnode_operation(&fc);
+ }
+
+ _leave(" = %d", ret);
+ return ret;
+}
+
+/*
+ * Extend a lock on a file
+ */
+static int afs_extend_lock(struct afs_vnode *vnode, struct key *key)
+{
+ struct afs_fs_cursor fc;
+ int ret;
+
+ _enter("%s{%x:%u.%u},%x",
+ vnode->volume->name,
+ vnode->fid.vid,
+ vnode->fid.vnode,
+ vnode->fid.unique,
+ key_serial(key));
+
+ ret = -ERESTARTSYS;
+ if (afs_begin_vnode_operation(&fc, vnode, key)) {
+ while (afs_select_current_fileserver(&fc)) {
+ fc.cb_break = vnode->cb_break + vnode->cb_s_break;
+ afs_fs_extend_lock(&fc);
+ }
+
+ afs_check_for_remote_deletion(&fc, fc.vnode);
+ afs_vnode_commit_status(&fc, vnode, fc.cb_break);
+ ret = afs_end_vnode_operation(&fc);
+ }
+
+ _leave(" = %d", ret);
+ return ret;
+}
+
+/*
+ * Release a lock on a file
+ */
+static int afs_release_lock(struct afs_vnode *vnode, struct key *key)
+{
+ struct afs_fs_cursor fc;
+ int ret;
+
+ _enter("%s{%x:%u.%u},%x",
+ vnode->volume->name,
+ vnode->fid.vid,
+ vnode->fid.vnode,
+ vnode->fid.unique,
+ key_serial(key));
+
+ ret = -ERESTARTSYS;
+ if (afs_begin_vnode_operation(&fc, vnode, key)) {
+ while (afs_select_current_fileserver(&fc)) {
+ fc.cb_break = vnode->cb_break + vnode->cb_s_break;
+ afs_fs_release_lock(&fc);
+ }
+
+ afs_check_for_remote_deletion(&fc, fc.vnode);
+ afs_vnode_commit_status(&fc, vnode, fc.cb_break);
+ ret = afs_end_vnode_operation(&fc);
+ }
+
+ _leave(" = %d", ret);
+ return ret;
+}
+
+/*
* do work for a lock, including:
* - probing for a lock we're waiting on but didn't get immediately
* - extending a lock that's close to timing out
@@ -91,7 +185,7 @@ void afs_lock_work(struct work_struct *work)
/* attempt to release the server lock; if it fails, we just
* wait 5 minutes and it'll time out anyway */
- ret = afs_vnode_release_lock(vnode, vnode->unlock_key);
+ ret = afs_release_lock(vnode, vnode->unlock_key);
if (ret < 0)
printk(KERN_WARNING "AFS:"
" Faile