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Diffstat (limited to 'fs/cifs/cifsfs.c')
-rw-r--r--fs/cifs/cifsfs.c162
1 files changed, 68 insertions, 94 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 2f0c58646c10..3e2989976297 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -104,8 +104,7 @@ cifs_sb_deactive(struct super_block *sb)
}
static int
-cifs_read_super(struct super_block *sb, struct smb_vol *volume_info,
- const char *devname, int silent)
+cifs_read_super(struct super_block *sb)
{
struct inode *inode;
struct cifs_sb_info *cifs_sb;
@@ -113,22 +112,16 @@ cifs_read_super(struct super_block *sb, struct smb_vol *volume_info,
cifs_sb = CIFS_SB(sb);
- spin_lock_init(&cifs_sb->tlink_tree_lock);
- cifs_sb->tlink_tree = RB_ROOT;
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIXACL)
+ sb->s_flags |= MS_POSIXACL;
- rc = bdi_setup_and_register(&cifs_sb->bdi, "cifs", BDI_CAP_MAP_COPY);
- if (rc)
- return rc;
-
- cifs_sb->bdi.ra_pages = default_backing_dev_info.ra_pages;
+ if (cifs_sb_master_tcon(cifs_sb)->ses->capabilities & CAP_LARGE_FILES)
+ sb->s_maxbytes = MAX_LFS_FILESIZE;
+ else
+ sb->s_maxbytes = MAX_NON_LFS;
- rc = cifs_mount(sb, cifs_sb, volume_info, devname);
-
- if (rc) {
- if (!silent)
- cERROR(1, "cifs_mount failed w/return code = %d", rc);
- goto out_mount_failed;
- }
+ /* BB FIXME fix time_gran to be larger for LANMAN sessions */
+ sb->s_time_gran = 100;
sb->s_magic = CIFS_MAGIC_NUMBER;
sb->s_op = &cifs_super_ops;
@@ -170,37 +163,14 @@ out_no_root:
if (inode)
iput(inode);
- cifs_umount(sb, cifs_sb);
-
-out_mount_failed:
- bdi_destroy(&cifs_sb->bdi);
return rc;
}
-static void
-cifs_put_super(struct super_block *sb)
+static void cifs_kill_sb(struct super_block *sb)
{
- int rc = 0;
- struct cifs_sb_info *cifs_sb;
-
- cFYI(1, "In cifs_put_super");
- cifs_sb = CIFS_SB(sb);
- if (cifs_sb == NULL) {
- cFYI(1, "Empty cifs superblock info passed to unmount");
- return;
- }
-
- rc = cifs_umount(sb, cifs_sb);
- if (rc)
- cERROR(1, "cifs_umount failed with return code %d", rc);
- if (cifs_sb->mountdata) {
- kfree(cifs_sb->mountdata);
- cifs_sb->mountdata = NULL;
- }
-
- unload_nls(cifs_sb->local_nls);
- bdi_destroy(&cifs_sb->bdi);
- kfree(cifs_sb);
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+ kill_anon_super(sb);
+ cifs_umount(cifs_sb);
}
static int
@@ -548,7 +518,6 @@ static int cifs_drop_inode(struct inode *inode)
}
static const struct super_operations cifs_super_ops = {
- .put_super = cifs_put_super,
.statfs = cifs_statfs,
.alloc_inode = cifs_alloc_inode,
.destroy_inode = cifs_destroy_inode,
@@ -585,7 +554,7 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
full_path = cifs_build_path_to_root(vol, cifs_sb,
cifs_sb_master_tcon(cifs_sb));
if (full_path == NULL)
- return NULL;
+ return ERR_PTR(-ENOMEM);
cFYI(1, "Get root dentry for %s", full_path);
@@ -614,7 +583,7 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
dchild = d_alloc(dparent, &name);
if (dchild == NULL) {
dput(dparent);
- dparent = NULL;
+ dparent = ERR_PTR(-ENOMEM);
goto out;
}
}
@@ -632,7 +601,7 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
if (rc) {
dput(dchild);
dput(dparent);
- dparent = NULL;
+ dparent = ERR_PTR(rc);
goto out;
}
alias = d_materialise_unique(dchild, inode);
@@ -640,7 +609,7 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
dput(dchild);
if (IS_ERR(alias)) {
dput(dparent);
- dparent = NULL;
+ dparent = ERR_PTR(-EINVAL); /* XXX */
goto out;
}
dchild = alias;
@@ -660,6 +629,13 @@ out:
return dparent;
}
+static int cifs_set_super(struct super_block *sb, void *data)
+{
+ struct cifs_mnt_data *mnt_data = data;
+ sb->s_fs_info = mnt_data->cifs_sb;
+ return set_anon_super(sb, NULL);
+}
+
static struct dentry *
cifs_do_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data)
@@ -673,82 +649,80 @@ cifs_do_mount(struct file_system_type *fs_type,
cFYI(1, "Devname: %s flags: %d ", dev_name, flags);
- rc = cifs_setup_volume_info(&volume_info, (char *)data, dev_name);
- if (rc)
- return ERR_PTR(rc);
+ volume_info = cifs_get_volume_info((char *)data, dev_name);
+ if (IS_ERR(volume_info))
+ return ERR_CAST(volume_info);
cifs_sb = kzalloc(sizeof(struct cifs_sb_info), GFP_KERNEL);
if (cifs_sb == NULL) {
root = ERR_PTR(-ENOMEM);
- goto out;
+ goto out_nls;
+ }
+
+ cifs_sb->mountdata = kstrndup(data, PAGE_SIZE, GFP_KERNEL);
+ if (cifs_sb->mountdata == NULL) {
+ root = ERR_PTR(-ENOMEM);
+ goto out_cifs_sb;
}
cifs_setup_cifs_sb(volume_info, cifs_sb);
+ rc = cifs_mount(cifs_sb, volume_info);
+ if (rc) {
+ if (!(flags & MS_SILENT))
+ cERROR(1, "cifs_mount failed w/return code = %d", rc);
+ root = ERR_PTR(rc);
+ goto out_mountdata;
+ }
+
mnt_data.vol = volume_info;
mnt_data.cifs_sb = cifs_sb;
mnt_data.flags = flags;
- sb = sget(fs_type, cifs_match_super, set_anon_super, &mnt_data);
+ sb = sget(fs_type, cifs_match_super, cifs_set_super, &mnt_data);
if (IS_ERR(sb)) {
root = ERR_CAST(sb);
- goto out_cifs_sb;
+ cifs_umount(cifs_sb);
+ goto out;
}
- if (sb->s_fs_info) {
+ if (sb->s_root) {
cFYI(1, "Use existing superblock");
- goto out_shared;
- }
-
- /*
- * Copy mount params for use in submounts. Better to do
- * the copy here and deal with the error before cleanup gets
- * complicated post-mount.
- */
- cifs_sb->mountdata = kstrndup(data, PAGE_SIZE, GFP_KERNEL);
- if (cifs_sb->mountdata == NULL) {
- root = ERR_PTR(-ENOMEM);
- goto out_super;
- }
-
- sb->s_flags = flags;
- /* BB should we make this contingent on mount parm? */
- sb->s_flags |= MS_NODIRATIME | MS_NOATIME;
- sb->s_fs_info = cifs_sb;
+ cifs_umount(cifs_sb);
+ } else {
+ sb->s_flags = flags;
+ /* BB should we make this contingent on mount parm? */
+ sb->s_flags |= MS_NODIRATIME | MS_NOATIME;
+
+ rc = cifs_read_super(sb);
+ if (rc) {
+ root = ERR_PTR(rc);
+ goto out_super;
+ }
- rc = cifs_read_super(sb, volume_info, dev_name,
- flags & MS_SILENT ? 1 : 0);
- if (rc) {
- root = ERR_PTR(rc);
- goto out_super;
+ sb->s_flags |= MS_ACTIVE;
}
- sb->s_flags |= MS_ACTIVE;
-
root = cifs_get_root(volume_info, sb);
- if (root == NULL)
+ if (IS_ERR(root))
goto out_super;
cFYI(1, "dentry root is: %p", root);
goto out;
-out_shared:
- root = cifs_get_root(volume_info, sb);
- if (root)
- cFYI(1, "dentry root is: %p", root);
- goto out;
-
out_super:
- kfree(cifs_sb->mountdata);
deactivate_locked_super(sb);
+out:
+ cifs_cleanup_volume_info(volume_info);
+ return root;
+out_mountdata:
+ kfree(cifs_sb->mountdata);
out_cifs_sb:
- unload_nls(cifs_sb->local_nls);
kfree(cifs_sb);
-
-out:
- cifs_cleanup_volume_info(&volume_info);
- return root;
+out_nls:
+ unload_nls(volume_info->local_nls);
+ goto out;
}
static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
@@ -837,7 +811,7 @@ struct file_system_type cifs_fs_type = {
.owner = THIS_MODULE,
.name = "cifs",
.mount = cifs_do_mount,
- .kill_sb = kill_anon_super,
+ .kill_sb = cifs_kill_sb,
/* .fs_flags */
};
const struct inode_operations cifs_dir_inode_ops = {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 19:25:36 +0100