Linux-2.6.12-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!
diff --git a/fs/ufs/util.c b/fs/ufs/util.c
new file mode 100644
index 0000000..59acc8f
--- /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;
+}