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Replace P2ALIGN with P2ALIGN_TYPED and delete P2ALIGN.

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In P2ALIGN, the result would be incorrect when align is unsigned
integer and x is larger than max value of the type of align.
In that case, -(align) would be a positive integer, which means
high bits would be zero and finally stay zero after '&' when
align is converted to a larger integer type.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Youzhong Yang <yyang@mathworks.com>
Signed-off-by: Qiuhao Chen <chenqiuhao1997@gmail.com>
Closes #15940
This commit is contained in:
chenqiuhao1997
2024-05-10 23:47:21 +08:00
committed by Brian Behlendorf
parent 2566592045
commit 9edf6af4ae
16 changed files with 40 additions and 29 deletions
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lib/libzfs/os/linux/libzfs_pool_os.c
+2 -1
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@@ -268,7 +268,8 @@ zpool_label_disk(libzfs_handle_t *hdl, zpool_handle_t *zhp, const char *name)
if (start_block == MAXOFFSET_T)
start_block = NEW_START_BLOCK;
slice_size -= start_block;
slice_size = P2ALIGN(slice_size, PARTITION_END_ALIGNMENT);
slice_size = P2ALIGN_TYPED(slice_size, PARTITION_END_ALIGNMENT,
uint64_t);
vtoc->efi_parts[0].p_start = start_block;
vtoc->efi_parts[0].p_size = slice_size;