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commit 2257593d583b2016d73d4b6eb7a76bda751c1c5a
Author: Stéphane Glondu <glondu@debian.org>
Date: Sat Aug 23 10:57:03 2025 +0200
libstore: use 512-byte blocks if file size is a multiple
As suggested in:
https://lists.debian.org/aKheR0SX8yI5Aw9Q@begin
diff --git a/libstore/file.c b/libstore/file.c
index c54eee91..80d6812a 100644
--- a/libstore/file.c
+++ b/libstore/file.c
@@ -271,16 +271,29 @@ store_file_create (file_t file, int flags, struct store **store)
struct store_run run;
struct stat stat;
error_t err = io_stat (file, &stat);
+ size_t block_size;
+ size_t sector_size = 512;
if (err)
return err;
run.start = 0;
- run.length = stat.st_size;
+
+ /* Try to use a sector as block size. */
+ if ((stat.st_size % sector_size) == 0)
+ {
+ block_size = sector_size;
+ run.length = stat.st_size / sector_size;
+ }
+ else
+ {
+ block_size = 1;
+ run.length = stat.st_size;
+ }
flags |= STORE_ENFORCED; /* 'cause it's the whole file. */
- return _store_file_create (file, flags, 1, &run, 1, store);
+ return _store_file_create (file, flags, block_size, &run, 1, store);
}
/* Like store_file_create, but doesn't query the file for information. */
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