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authorRalf Baechle <ralf@linux-mips.org>1998-08-25 09:12:35 +0000
committerRalf Baechle <ralf@linux-mips.org>1998-08-25 09:12:35 +0000
commitc7fc24dc4420057f103afe8fc64524ebc25c5d37 (patch)
tree3682407a599b8f9f03fc096298134cafba1c9b2f /include/linux/quotaops.h
parent1d793fade8b063fde3cf275bf1a5c2d381292cd9 (diff)
o Merge with Linux 2.1.116.
o New Newport console code. o New G364 console code.
Diffstat (limited to 'include/linux/quotaops.h')
-rw-r--r--include/linux/quotaops.h140
1 files changed, 140 insertions, 0 deletions
diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
new file mode 100644
index 000000000..a2a00a04c
--- /dev/null
+++ b/include/linux/quotaops.h
@@ -0,0 +1,140 @@
+/*
+ * Definitions for diskquota-operations. When diskquota is configured these
+ * macros expand to the right source-code.
+ *
+ * Author: Marco van Wieringen <mvw@planets.elm.net>
+ *
+ * Version: $Id: quotaops.h,v 1.2 1998/01/15 16:22:26 ecd Exp $
+ *
+ */
+#ifndef _LINUX_QUOTAOPS_
+#define _LINUX_QUOTAOPS_
+
+#include <linux/config.h>
+
+#if defined(CONFIG_QUOTA)
+
+/*
+ * declaration of quota_function calls in kernel.
+ */
+extern void dquot_initialize(struct inode *inode, short type);
+extern void dquot_drop(struct inode *inode);
+extern void invalidate_dquots(kdev_t dev, short type);
+extern int quota_off(kdev_t dev, short type);
+extern int sync_dquots(kdev_t dev, short type);
+
+extern int dquot_alloc_block(const struct inode *inode, unsigned long number,
+ uid_t initiator, char warn);
+extern int dquot_alloc_inode(const struct inode *inode, unsigned long number,
+ uid_t initiator);
+
+extern void dquot_free_block(const struct inode *inode, unsigned long number);
+extern void dquot_free_inode(const struct inode *inode, unsigned long number);
+
+extern int dquot_transfer(struct inode *inode, struct iattr *iattr,
+ char direction, uid_t initiator);
+
+/*
+ * Operations supported for diskquotas.
+ */
+extern __inline__ void DQUOT_INIT(struct inode *inode)
+{
+ if (inode->i_sb && inode->i_sb->dq_op)
+ inode->i_sb->dq_op->initialize(inode, -1);
+}
+
+extern __inline__ void DQUOT_DROP(struct inode *inode)
+{
+ if (IS_QUOTAINIT(inode)) {
+ if (inode->i_sb && inode->i_sb->dq_op)
+ inode->i_sb->dq_op->drop(inode);
+ }
+}
+
+extern __inline__ int DQUOT_PREALLOC_BLOCK(struct super_block *sb, const struct inode *inode, int nr)
+{
+ if (sb->dq_op) {
+ if (sb->dq_op->alloc_block(inode, fs_to_dq_blocks(nr, sb->s_blocksize),
+ current->euid, 0) == NO_QUOTA)
+ return 1;
+ }
+ return 0;
+}
+
+extern __inline__ int DQUOT_ALLOC_BLOCK(struct super_block *sb, const struct inode *inode, int nr)
+{
+ if (sb->dq_op) {
+ if (sb->dq_op->alloc_block(inode, fs_to_dq_blocks(nr, sb->s_blocksize),
+ current->euid, 1) == NO_QUOTA)
+ return 1;
+ }
+ return 0;
+}
+
+extern __inline__ int DQUOT_ALLOC_INODE(struct super_block *sb, struct inode *inode)
+{
+ if (sb->dq_op) {
+ sb->dq_op->initialize (inode, -1);
+ if (sb->dq_op->alloc_inode (inode, 1, current->euid))
+ return 1;
+ }
+ inode->i_flags |= S_QUOTA;
+ return 0;
+}
+
+extern __inline__ void DQUOT_FREE_BLOCK(struct super_block *sb, const struct inode *inode, int nr)
+{
+ if (sb->dq_op)
+ sb->dq_op->free_block(inode, fs_to_dq_blocks(nr, sb->s_blocksize));
+}
+
+extern __inline__ void DQUOT_FREE_INODE(struct super_block *sb, struct inode *inode)
+{
+ if (sb->dq_op)
+ sb->dq_op->free_inode(inode, 1);
+}
+
+extern __inline__ int DQUOT_TRANSFER(struct dentry *dentry, struct iattr *iattr)
+{
+ int error = -EDQUOT;
+
+ if (dentry->d_inode->i_sb->dq_op) {
+ if (IS_QUOTAINIT(dentry->d_inode) == 0)
+ dentry->d_inode->i_sb->dq_op->initialize(dentry->d_inode, -1);
+ if (dentry->d_inode->i_sb->dq_op->transfer(dentry->d_inode, iattr, 0, current->euid))
+ goto out;
+ error = notify_change(dentry, iattr);
+ if (error)
+ dentry->d_inode->i_sb->dq_op->transfer(dentry->d_inode, iattr, 1, current->euid);
+ } else {
+ error = notify_change(dentry, iattr);
+ }
+out:
+ return error;
+}
+
+#define DQUOT_SYNC(dev) sync_dquots(dev, -1)
+#define DQUOT_OFF(dev) quota_off(dev, -1)
+
+#else
+
+/*
+ * NO-OP when quota not configured.
+ */
+#define DQUOT_INIT(inode) do { } while(0)
+#define DQUOT_DROP(inode) do { } while(0)
+#define DQUOT_PREALLOC_BLOCK(sb, inode, nr) (0)
+#define DQUOT_ALLOC_BLOCK(sb, inode, nr) (0)
+#define DQUOT_ALLOC_INODE(sb, inode) (0)
+#define DQUOT_FREE_BLOCK(sb, inode, nr) do { } while(0)
+#define DQUOT_FREE_INODE(sb, inode) do { } while(0)
+#define DQUOT_SYNC(dev) do { } while(0)
+#define DQUOT_OFF(dev) do { } while(0)
+
+/*
+ * Special case expands to a simple notify_change.
+ */
+#define DQUOT_TRANSFER(dentry, iattr) notify_change(dentry, iattr)
+
+#endif /* CONFIG_QUOTA */
+#endif /* _LINUX_QUOTAOPS_ */