Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 257 insertions, 0 deletions

diff --git a/fs/ufs/util.c b/fs/ufs/util.c
new file mode 100644
index 000000000000..59acc8f073ac
--- /dev/null
+++ b/fs/ufs/util.c
@@ -0,0 +1,257 @@
+/*
+ *  linux/fs/ufs/util.c
+ *
+ * Copyright (C) 1998
+ * Daniel Pirkl <daniel.pirkl@email.cz>
+ * Charles University, Faculty of Mathematics and Physics
+ */
+ 
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/ufs_fs.h>
+#include <linux/buffer_head.h>
+
+#include "swab.h"
+#include "util.h"
+
+#undef UFS_UTILS_DEBUG
+
+#ifdef UFS_UTILS_DEBUG
+#define UFSD(x) printk("(%s, %d), %s: ", __FILE__, __LINE__, __FUNCTION__); printk x;
+#else
+#define UFSD(x)
+#endif
+
+
+struct ufs_buffer_head * _ubh_bread_ (struct ufs_sb_private_info * uspi,
+	struct super_block *sb, u64 fragment, u64 size)
+{
+	struct ufs_buffer_head * ubh;
+	unsigned i, j ;
+	u64  count = 0;
+	if (size & ~uspi->s_fmask)
+		return NULL;
+	count = size >> uspi->s_fshift;
+	if (count > UFS_MAXFRAG)
+		return NULL;
+	ubh = (struct ufs_buffer_head *)
+		kmalloc (sizeof (struct ufs_buffer_head), GFP_KERNEL);
+	if (!ubh)
+		return NULL;
+	ubh->fragment = fragment;
+	ubh->count = count;
+	for (i = 0; i < count; i++)
+		if (!(ubh->bh[i] = sb_bread(sb, fragment + i)))
+			goto failed;
+	for (; i < UFS_MAXFRAG; i++)
+		ubh->bh[i] = NULL;
+	return ubh;
+failed:
+	for (j = 0; j < i; j++)
+		brelse (ubh->bh[j]);
+	kfree(ubh);
+	return NULL;
+}
+
+struct ufs_buffer_head * ubh_bread_uspi (struct ufs_sb_private_info * uspi,
+	struct super_block *sb, u64 fragment, u64 size)
+{
+	unsigned i, j;
+	u64 count = 0;
+	if (size & ~uspi->s_fmask)
+		return NULL;
+	count = size >> uspi->s_fshift;
+	if (count <= 0 || count > UFS_MAXFRAG)
+		return NULL;
+	USPI_UBH->fragment = fragment;
+	USPI_UBH->count = count;
+	for (i = 0; i < count; i++)
+		if (!(USPI_UBH->bh[i] = sb_bread(sb, fragment + i)))
+			goto failed;
+	for (; i < UFS_MAXFRAG; i++)
+		USPI_UBH->bh[i] = NULL;
+	return USPI_UBH;
+failed:
+	for (j = 0; j < i; j++)
+		brelse (USPI_UBH->bh[j]);
+	return NULL;
+}
+
+void ubh_brelse (struct ufs_buffer_head * ubh)
+{
+	unsigned i;
+	if (!ubh)
+		return;
+	for (i = 0; i < ubh->count; i++)
+		brelse (ubh->bh[i]);
+	kfree (ubh);
+}
+
+void ubh_brelse_uspi (struct ufs_sb_private_info * uspi)
+{
+	unsigned i;
+	if (!USPI_UBH)
+		return;
+	for ( i = 0; i < USPI_UBH->count; i++ ) {
+		brelse (USPI_UBH->bh[i]);
+		USPI_UBH->bh[i] = NULL;
+	}
+}
+
+void ubh_mark_buffer_dirty (struct ufs_buffer_head * ubh)
+{
+	unsigned i;
+	if (!ubh)
+		return;
+	for ( i = 0; i < ubh->count; i++ )
+		mark_buffer_dirty (ubh->bh[i]);
+}
+
+void ubh_mark_buffer_uptodate (struct ufs_buffer_head * ubh, int flag)
+{
+	unsigned i;
+	if (!ubh)
+		return;
+	if (flag) {
+		for ( i = 0; i < ubh->count; i++ )
+			set_buffer_uptodate (ubh->bh[i]);
+	} else {
+		for ( i = 0; i < ubh->count; i++ )
+			clear_buffer_uptodate (ubh->bh[i]);
+	}
+}
+
+void ubh_ll_rw_block (int rw, unsigned nr, struct ufs_buffer_head * ubh[])
+{
+	unsigned i;
+	if (!ubh)
+		return;
+	for ( i = 0; i < nr; i++ )
+		ll_rw_block (rw, ubh[i]->count, ubh[i]->bh);
+}
+
+void ubh_wait_on_buffer (struct ufs_buffer_head * ubh)
+{
+	unsigned i;
+	if (!ubh)
+		return;
+	for ( i = 0; i < ubh->count; i++ )
+		wait_on_buffer (ubh->bh[i]);
+}
+
+unsigned ubh_max_bcount (struct ufs_buffer_head * ubh)
+{
+	unsigned i;
+	unsigned max = 0;
+	if (!ubh)
+		return 0;
+	for ( i = 0; i < ubh->count; i++ ) 
+		if ( atomic_read(&ubh->bh[i]->b_count) > max )
+			max = atomic_read(&ubh->bh[i]->b_count);
+	return max;
+}
+
+void ubh_bforget (struct ufs_buffer_head * ubh)
+{
+	unsigned i;
+	if (!ubh) 
+		return;
+	for ( i = 0; i < ubh->count; i++ ) if ( ubh->bh[i] ) 
+		bforget (ubh->bh[i]);
+}
+ 
+int ubh_buffer_dirty (struct ufs_buffer_head * ubh)
+{
+	unsigned i;
+	unsigned result = 0;
+	if (!ubh)
+		return 0;
+	for ( i = 0; i < ubh->count; i++ )
+		result |= buffer_dirty(ubh->bh[i]);
+	return result;
+}
+
+void _ubh_ubhcpymem_(struct ufs_sb_private_info * uspi, 
+	unsigned char * mem, struct ufs_buffer_head * ubh, unsigned size)
+{
+	unsigned len, bhno;
+	if (size > (ubh->count << uspi->s_fshift))
+		size = ubh->count << uspi->s_fshift;
+	bhno = 0;
+	while (size) {
+		len = min_t(unsigned int, size, uspi->s_fsize);
+		memcpy (mem, ubh->bh[bhno]->b_data, len);
+		mem += uspi->s_fsize;
+		size -= len;
+		bhno++;
+	}
+}
+
+void _ubh_memcpyubh_(struct ufs_sb_private_info * uspi, 
+	struct ufs_buffer_head * ubh, unsigned char * mem, unsigned size)
+{
+	unsigned len, bhno;
+	if (size > (ubh->count << uspi->s_fshift))
+		size = ubh->count << uspi->s_fshift;
+	bhno = 0;
+	while (size) {
+		len = min_t(unsigned int, size, uspi->s_fsize);
+		memcpy (ubh->bh[bhno]->b_data, mem, len);
+		mem += uspi->s_fsize;
+		size -= len;
+		bhno++;
+	}
+}
+
+dev_t
+ufs_get_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi)
+{
+	__fs32 fs32;
+	dev_t dev;
+
+	if ((UFS_SB(sb)->s_flags & UFS_ST_MASK) == UFS_ST_SUNx86)
+		fs32 = ufsi->i_u1.i_data[1];
+	else
+		fs32 = ufsi->i_u1.i_data[0];
+	fs32 = fs32_to_cpu(sb, fs32);
+	switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {
+	case UFS_ST_SUNx86:
+	case UFS_ST_SUN:
+		if ((fs32 & 0xffff0000) == 0 ||
+		    (fs32 & 0xffff0000) == 0xffff0000)
+			dev = old_decode_dev(fs32 & 0x7fff);
+		else
+			dev = MKDEV(sysv_major(fs32), sysv_minor(fs32));
+		break;
+
+	default:
+		dev = old_decode_dev(fs32);
+		break;
+	}
+	return dev;
+}
+
+void
+ufs_set_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi, dev_t dev)
+{
+	__fs32 fs32;
+
+	switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {
+	case UFS_ST_SUNx86:
+	case UFS_ST_SUN:
+		fs32 = sysv_encode_dev(dev);
+		if ((fs32 & 0xffff8000) == 0) {
+			fs32 = old_encode_dev(dev);
+		}
+		break;
+
+	default:
+		fs32 = old_encode_dev(dev);
+		break;
+	}
+	fs32 = cpu_to_fs32(sb, fs32);
+	if ((UFS_SB(sb)->s_flags & UFS_ST_MASK) == UFS_ST_SUNx86)
+		ufsi->i_u1.i_data[1] = fs32;
+	else
+		ufsi->i_u1.i_data[0] = fs32;
+}