Since SEEK_{DATA,HOLE} are part of the POSIX standard [1].
[1] https://pubs.opengroup.org/onlinepubs/9799919799/functions/lseek.html
Signed-off-by: Gao Xiang <[email protected]>
---
include/erofs/io.h | 11 +++++++++++
lib/blobchunk.c | 4 ----
2 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/include/erofs/io.h b/include/erofs/io.h
index 4bc216a2eace..9533efc2d20a 100644
--- a/include/erofs/io.h
+++ b/include/erofs/io.h
@@ -24,6 +24,17 @@ extern "C"
#define O_BINARY 0
#endif
+/*
+ * seek stuff
+ */
+#ifndef SEEK_DATA
+#define SEEK_DATA 3
+#endif
+
+#ifndef SEEK_HOLE
+#define SEEK_HOLE 4
+#endif
+
struct erofs_vfile;
struct erofs_vfops {
diff --git a/lib/blobchunk.c b/lib/blobchunk.c
index 3b1c97b5d874..c66bd2020e45 100644
--- a/lib/blobchunk.c
+++ b/lib/blobchunk.c
@@ -277,14 +277,12 @@ int erofs_blob_write_chunked_file(struct erofs_inode
*inode, int fd,
u8 *chunkdata;
int ret;
-#ifdef SEEK_DATA
/* if the file is fully sparsed, use one big chunk instead */
if (lseek(fd, startoff, SEEK_DATA) < 0 && errno == ENXIO) {
chunkbits = ilog2(inode->i_size - 1) + 1;
if (chunkbits < sbi->blkszbits)
chunkbits = sbi->blkszbits;
}
-#endif
if (chunkbits - sbi->blkszbits > EROFS_CHUNK_FORMAT_BLKBITS_MASK)
chunkbits = EROFS_CHUNK_FORMAT_BLKBITS_MASK + sbi->blkszbits;
chunksize = 1ULL << chunkbits;
@@ -332,7 +330,6 @@ int erofs_blob_write_chunked_file(struct erofs_inode
*inode, int fd,
}
for (pos = 0; pos < inode->i_size; pos += len) {
-#ifdef SEEK_DATA
off_t offset = lseek(fd, pos + startoff, SEEK_DATA);
if (offset < 0) {
@@ -369,7 +366,6 @@ int erofs_blob_write_chunked_file(struct erofs_inode
*inode, int fd,
len = 0;
continue;
}
-#endif
len = min_t(u64, inode->i_size - pos, chunksize);
ret = read(fd, chunkdata, len);
--
2.43.5
