Btrfs-progs: fix some build warnings on 32bit platform

Fix following build warnings on 32bit platform:

...
utils.c:1708:3: warning: left shift count >= width of
type [enabled by default]
   if (x << i & (1UL << 63))
   ^
qgroup-verify.c:393:9: warning: cast to pointer from integer
of different size [-Wint-to-pointer-cast]
  return (struct tree_block *)unode->aux;
         ^
qgroup-verify.c:407:38: warning: cast from pointer to integer
of different size [-Wpointer-to-int-cast]
   if (ulist_add(tree_blocks, bytenr, (unsigned long long)block, 0) >= 0)
                                      ^
cmds-restore.c:120:4: warning: format %lu expects argument of type
long unsigned int, but argument 3 has type size_t [-Wformat=]
    fprintf(stderr, "bad compress length %lu\n", in_len);
...

BTW, this patch also switches other castings with new helpers.

Signed-off-by: Wang Shilong <wangshilong1991@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.cz>

cmds-inspect.c

@@ -49,7 +49,7 @@ static int __ino_to_path_fd(u64 inum, int fd, int verbose, const char *prepend)
 	memset(fspath, 0, sizeof(*fspath));
 	ipa.inum = inum;
 	ipa.size = 4096;
-	ipa.fspath = (uintptr_t)fspath;
+	ipa.fspath = ptr_to_u64(fspath);
 
 	ret = ioctl(fd, BTRFS_IOC_INO_PATHS, &ipa);
 	if (ret) {
@@ -185,7 +185,7 @@ static int cmd_logical_resolve(int argc, char **argv)
 	memset(inodes, 0, sizeof(*inodes));
 	loi.logical = arg_strtou64(argv[optind]);
 	loi.size = size;
-	loi.inodes = (uintptr_t)inodes;
+	loi.inodes = ptr_to_u64(inodes);
 
 	fd = open_file_or_dir(argv[optind+1], &dirstream);
 	if (fd < 0) {

cmds-restore.c

@@ -117,7 +117,8 @@ static int decompress_lzo(unsigned char *inbuf, char *outbuf, u64 compress_len,
 		in_len = read_compress_length(inbuf);
 
 		if ((tot_in + LZO_LEN + in_len) > tot_len) {
-			fprintf(stderr, "bad compress length %lu\n", in_len);
+			fprintf(stderr, "bad compress length %lu\n",
+				(unsigned long)in_len);
 			return -1;
 		}
 

extent-tree.c

@@ -3090,8 +3090,7 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info)
 			break;
 		ret = get_state_private(&info->block_group_cache, start, &ptr);
 		if (!ret) {
-			cache = (struct btrfs_block_group_cache *)
+			cache = u64_to_ptr(ptr);
-					(uintptr_t)ptr;
 			if (cache->free_space_ctl) {
 				btrfs_remove_free_space_cache(cache);
 				kfree(cache->free_space_ctl);

kerncompat.h

@@ -28,6 +28,10 @@
 #include <assert.h>
 #include <stddef.h>
 #include <linux/types.h>
+#include <stdint.h>
+
+#define ptr_to_u64(x)	((u64)(uintptr_t)x)
+#define u64_to_ptr(x)	((void *)(uintptr_t)x)
 
 #ifndef READ
 #define READ 0

qgroup-verify.c

@@ -390,7 +390,7 @@ static u64 resolve_one_root(u64 bytenr)
 
 static inline struct tree_block *unode_tree_block(struct ulist_node *unode)
 {
-	return (struct tree_block *)unode->aux;
+	return u64_to_ptr(unode->aux);
 }
 static inline u64 unode_bytenr(struct ulist_node *unode)
 {
@@ -404,7 +404,7 @@ static int alloc_tree_block(u64 bytenr, u64 num_bytes, int level)
 	if (block) {
 		block->num_bytes = num_bytes;
 		block->level = level;
-		if (ulist_add(tree_blocks, bytenr, (unsigned long long)block, 0) >= 0)
+		if (ulist_add(tree_blocks, bytenr, ptr_to_u64(block), 0) >= 0)
 			return 0;
 		free(block);
 	}

utils.c

@@ -1673,7 +1673,7 @@ static int fls64(u64 x)
 	int i;
 
 	for (i = 0; i <64; i++)
-		if (x << i & (1UL << 63))
+		if (x << i & (1ULL << 63))
 			return 64 - i;
 	return 64 - i;
 }