int count = sizeof(struct xfs_dir2_sf_entry); /* namelen + offset */
count += len; /* name */
- count += hdr->i8count ? sizeof(xfs_dir2_ino8_t) :
- sizeof(xfs_dir2_ino4_t); /* ino # */
+ count += hdr->i8count ? XFS_INO64_SIZE : XFS_INO32_SIZE; /* ino # */
return count;
}
static xfs_ino_t
xfs_dir2_sf_get_ino(
struct xfs_dir2_sf_hdr *hdr,
- xfs_dir2_inou_t *from)
+ __uint8_t *from)
{
if (hdr->i8count)
- return get_unaligned_be64(&from->i8.i) & 0x00ffffffffffffffULL;
+ return get_unaligned_be64(from) & 0x00ffffffffffffffULL;
else
- return get_unaligned_be32(&from->i4.i);
+ return get_unaligned_be32(from);
}
static void
xfs_dir2_sf_put_ino(
struct xfs_dir2_sf_hdr *hdr,
- xfs_dir2_inou_t *to,
+ __uint8_t *to,
xfs_ino_t ino)
{
ASSERT((ino & 0xff00000000000000ULL) == 0);
if (hdr->i8count)
- put_unaligned_be64(ino, &to->i8.i);
+ put_unaligned_be64(ino, to);
else
- put_unaligned_be32(ino, &to->i4.i);
+ put_unaligned_be32(ino, to);
}
static xfs_ino_t
xfs_dir2_sf_get_parent_ino(
struct xfs_dir2_sf_hdr *hdr)
{
- return xfs_dir2_sf_get_ino(hdr, &hdr->parent);
+ return xfs_dir2_sf_get_ino(hdr, hdr->parent);
}
static void
struct xfs_dir2_sf_hdr *hdr,
xfs_ino_t ino)
{
- xfs_dir2_sf_put_ino(hdr, &hdr->parent, ino);
+ xfs_dir2_sf_put_ino(hdr, hdr->parent, ino);
}
/*
struct xfs_dir2_sf_hdr *hdr,
struct xfs_dir2_sf_entry *sfep)
{
- return xfs_dir2_sf_get_ino(hdr,
- (xfs_dir2_inou_t *)&sfep->name[sfep->namelen]);
+ return xfs_dir2_sf_get_ino(hdr, &sfep->name[sfep->namelen]);
}
static void
struct xfs_dir2_sf_entry *sfep,
xfs_ino_t ino)
{
- xfs_dir2_sf_put_ino(hdr,
- (xfs_dir2_inou_t *)&sfep->name[sfep->namelen], ino);
+ xfs_dir2_sf_put_ino(hdr, &sfep->name[sfep->namelen], ino);
}
static xfs_ino_t
struct xfs_dir2_sf_hdr *hdr,
struct xfs_dir2_sf_entry *sfep)
{
- return xfs_dir2_sf_get_ino(hdr,
- (xfs_dir2_inou_t *)&sfep->name[sfep->namelen + 1]);
+ return xfs_dir2_sf_get_ino(hdr, &sfep->name[sfep->namelen + 1]);
}
static void
struct xfs_dir2_sf_entry *sfep,
xfs_ino_t ino)
{
- xfs_dir2_sf_put_ino(hdr,
- (xfs_dir2_inou_t *)&sfep->name[sfep->namelen + 1], ino);
+ xfs_dir2_sf_put_ino(hdr, &sfep->name[sfep->namelen + 1], ino);
}
#define NULLDATAOFF 0xffffU
typedef uint xfs_dir2_data_aoff_t; /* argument form */
-/*
- * Normalized offset (in a data block) of the entry, really xfs_dir2_data_off_t.
- * Only need 16 bits, this is the byte offset into the single block form.
- */
-typedef struct { __uint8_t i[2]; } __arch_pack xfs_dir2_sf_off_t;
-
/*
* Offset in data space of a data entry.
*/
*/
typedef __uint32_t xfs_dir2_db_t;
-/*
- * Inode number stored as 8 8-bit values.
- */
-typedef struct { __uint8_t i[8]; } xfs_dir2_ino8_t;
-
-/*
- * Inode number stored as 4 8-bit values.
- * Works a lot of the time, when all the inode numbers in a directory
- * fit in 32 bits.
- */
-typedef struct { __uint8_t i[4]; } xfs_dir2_ino4_t;
+#define XFS_INO32_SIZE 4
+#define XFS_INO64_SIZE 8
+#define XFS_INO64_DIFF (XFS_INO64_SIZE - XFS_INO32_SIZE)
-typedef union {
- xfs_dir2_ino8_t i8;
- xfs_dir2_ino4_t i4;
-} xfs_dir2_inou_t;
#define XFS_DIR2_MAX_SHORT_INUM ((xfs_ino_t)0xffffffffULL)
/*
typedef struct xfs_dir2_sf_hdr {
__uint8_t count; /* count of entries */
__uint8_t i8count; /* count of 8-byte inode #s */
- xfs_dir2_inou_t parent; /* parent dir inode number */
-} __arch_pack xfs_dir2_sf_hdr_t;
+ __uint8_t parent[8]; /* parent dir inode number */
+} __packed xfs_dir2_sf_hdr_t;
typedef struct xfs_dir2_sf_entry {
__u8 namelen; /* actual name length */
- xfs_dir2_sf_off_t offset; /* saved offset */
+ __u8 offset[2]; /* saved offset */
__u8 name[]; /* name, variable size */
/*
* A single byte containing the file type field follows the inode
* number for version 3 directory entries.
*
- * A xfs_dir2_ino8_t or xfs_dir2_ino4_t follows here, at a
- * variable offset after the name.
+ * A 64-bit or 32-bit inode number follows here, at a variable offset
+ * after the name.
*/
-} __arch_pack xfs_dir2_sf_entry_t;
+} xfs_dir2_sf_entry_t;
static inline int xfs_dir2_sf_hdr_size(int i8count)
{
return sizeof(struct xfs_dir2_sf_hdr) -
- (i8count == 0) *
- (sizeof(xfs_dir2_ino8_t) - sizeof(xfs_dir2_ino4_t));
+ (i8count == 0) * XFS_INO64_DIFF;
}
static inline xfs_dir2_data_aoff_t
xfs_dir2_sf_get_offset(xfs_dir2_sf_entry_t *sfep)
{
- return get_unaligned_be16(&sfep->offset.i);
+ return get_unaligned_be16(sfep->offset);
}
static inline void
xfs_dir2_sf_put_offset(xfs_dir2_sf_entry_t *sfep, xfs_dir2_data_aoff_t off)
{
- put_unaligned_be16(off, &sfep->offset.i);
+ put_unaligned_be16(off, sfep->offset);
}
static inline struct xfs_dir2_sf_entry *
/*
* Calculate the new size, see if we should give up yet.
*/
- size = xfs_dir2_sf_hdr_size(i8count) + /* header */
- count + /* namelen */
- count * (uint)sizeof(xfs_dir2_sf_off_t) + /* offset */
- namelen + /* name */
- (i8count ? /* inumber */
- (uint)sizeof(xfs_dir2_ino8_t) * count :
- (uint)sizeof(xfs_dir2_ino4_t) * count);
+ size = xfs_dir2_sf_hdr_size(i8count) + /* header */
+ count * 3 * sizeof(u8) + /* namelen + offset */
+ namelen + /* name */
+ (i8count ? /* inumber */
+ count * XFS_INO64_SIZE :
+ count * XFS_INO32_SIZE);
if (size > XFS_IFORK_DSIZE(dp))
return size; /* size value is a failure */
}
/*
* Yes, adjust the inode size. old count + (parent + new)
*/
- incr_isize +=
- (sfp->count + 2) *
- ((uint)sizeof(xfs_dir2_ino8_t) -
- (uint)sizeof(xfs_dir2_ino4_t));
+ incr_isize += (sfp->count + 2) * XFS_INO64_DIFF;
objchange = 1;
}
int error; /* error return value */
int newsize; /* new inode size */
- newsize =
- dp->i_df.if_bytes +
- (sfp->count + 1) *
- ((uint)sizeof(xfs_dir2_ino8_t) -
- (uint)sizeof(xfs_dir2_ino4_t));
+ newsize = dp->i_df.if_bytes + (sfp->count + 1) * XFS_INO64_DIFF;
/*
* Won't fit as shortform, convert to block then do replace.
*/
/*
* Compute the new inode size.
*/
- newsize =
- oldsize -
- (oldsfp->count + 1) *
- ((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t));
+ newsize = oldsize - (oldsfp->count + 1) * XFS_INO64_DIFF;
xfs_idata_realloc(dp, -oldsize, XFS_DATA_FORK);
xfs_idata_realloc(dp, newsize, XFS_DATA_FORK);
/*
i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep),
oldsfep = dp->d_ops->sf_nextentry(oldsfp, oldsfep)) {
sfep->namelen = oldsfep->namelen;
- sfep->offset = oldsfep->offset;
+ memcpy(sfep->offset, oldsfep->offset, sizeof(sfep->offset));
memcpy(sfep->name, oldsfep->name, sfep->namelen);
dp->d_ops->sf_put_ino(sfp, sfep,
dp->d_ops->sf_get_ino(oldsfp, oldsfep));
/*
* Compute the new inode size (nb: entry count + 1 for parent)
*/
- newsize =
- oldsize +
- (oldsfp->count + 1) *
- ((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t));
+ newsize = oldsize + (oldsfp->count + 1) * XFS_INO64_DIFF;
xfs_idata_realloc(dp, -oldsize, XFS_DATA_FORK);
xfs_idata_realloc(dp, newsize, XFS_DATA_FORK);
/*
i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep),
oldsfep = dp->d_ops->sf_nextentry(oldsfp, oldsfep)) {
sfep->namelen = oldsfep->namelen;
- sfep->offset = oldsfep->offset;
+ memcpy(sfep->offset, oldsfep->offset, sizeof(sfep->offset));
memcpy(sfep->name, oldsfep->name, sfep->namelen);
dp->d_ops->sf_put_ino(sfp, sfep,
dp->d_ops->sf_get_ino(oldsfp, oldsfep));
return x;
}
-/* ARM old ABI has some weird alignment/padding */
-#if defined(__arm__) && !defined(__ARM_EABI__)
-#define __arch_pack __attribute__((packed))
-#else
-#define __arch_pack
-#endif
-
#define ASSERT_ALWAYS(expr) \
(unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
XFS_CHECK_OFFSET(xfs_dir2_data_unused_t, length, 2);
XFS_CHECK_STRUCT_SIZE(xfs_dir2_free_hdr_t, 16);
XFS_CHECK_STRUCT_SIZE(xfs_dir2_free_t, 16);
- XFS_CHECK_STRUCT_SIZE(xfs_dir2_ino4_t, 4);
- XFS_CHECK_STRUCT_SIZE(xfs_dir2_ino8_t, 8);
- XFS_CHECK_STRUCT_SIZE(xfs_dir2_inou_t, 8);
XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_entry_t, 8);
XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_hdr_t, 16);
XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_t, 16);
XFS_CHECK_OFFSET(xfs_dir2_sf_entry_t, offset, 1);
XFS_CHECK_OFFSET(xfs_dir2_sf_entry_t, name, 3);
XFS_CHECK_STRUCT_SIZE(xfs_dir2_sf_hdr_t, 10);
- XFS_CHECK_STRUCT_SIZE(xfs_dir2_sf_off_t, 2);
/* log structures */
XFS_CHECK_STRUCT_SIZE(struct xfs_dq_logformat, 24);
projects / mirror_ubuntu-bionic-kernel.git / commitdiff