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Re: [PATCH v3 02/24] read-cache: use fixed width integer types

From
Junio C Hamano <gitster@pobox.com>
Date
Aug 20, 2013, 19:30 UTC
Message-ID
<xmqqr4do5fd8.fsf@gitster.dls.corp.google.com>
In-Reply-To
<1376854933-31241-3-git-send-email-t.gummerer@gmail.com>
Thomas Gummerer <t.gummerer@gmail.com> writes:
> Use the fixed width integer types uint16_t and uint32_t for ondisk
> structures, because unsigned short and unsigned int do not hae a
> guaranteed size.

This sounds like an independent fix to me. I'd queue this early independent from the rest of the series.

Thanks.
Show 84 quoted lines
>
> Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
> ---
>  cache.h      | 10 +++++-----
>  read-cache.c | 30 +++++++++++++++---------------
>  2 files changed, 20 insertions(+), 20 deletions(-)
>
> diff --git a/cache.h b/cache.h
> index bd6fb9f..9ef778a 100644
> --- a/cache.h
> +++ b/cache.h
> @@ -101,9 +101,9 @@ unsigned long git_deflate_bound(git_zstream *, unsigned long);
>  
>  #define CACHE_SIGNATURE 0x44495243	/* "DIRC" */
>  struct cache_header {
> -	unsigned int hdr_signature;
> -	unsigned int hdr_version;
> -	unsigned int hdr_entries;
> +	uint32_t hdr_signature;
> +	uint32_t hdr_version;
> +	uint32_t hdr_entries;
>  };
>  
>  #define INDEX_FORMAT_LB 2
> @@ -115,8 +115,8 @@ struct cache_header {
>   * check it for equality in the 32 bits we save.
>   */
>  struct cache_time {
> -	unsigned int sec;
> -	unsigned int nsec;
> +	uint32_t sec;
> +	uint32_t nsec;
>  };
>  
>  struct stat_data {
> diff --git a/read-cache.c b/read-cache.c
> index ceaf207..0df5b31 100644
> --- a/read-cache.c
> +++ b/read-cache.c
> @@ -1230,14 +1230,14 @@ static struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int reall
>  struct ondisk_cache_entry {
>  	struct cache_time ctime;
>  	struct cache_time mtime;
> -	unsigned int dev;
> -	unsigned int ino;
> -	unsigned int mode;
> -	unsigned int uid;
> -	unsigned int gid;
> -	unsigned int size;
> +	uint32_t dev;
> +	uint32_t ino;
> +	uint32_t mode;
> +	uint32_t uid;
> +	uint32_t gid;
> +	uint32_t size;
>  	unsigned char sha1[20];
> -	unsigned short flags;
> +	uint16_t flags;
>  	char name[FLEX_ARRAY]; /* more */
>  };
>  
> @@ -1249,15 +1249,15 @@ struct ondisk_cache_entry {
>  struct ondisk_cache_entry_extended {
>  	struct cache_time ctime;
>  	struct cache_time mtime;
> -	unsigned int dev;
> -	unsigned int ino;
> -	unsigned int mode;
> -	unsigned int uid;
> -	unsigned int gid;
> -	unsigned int size;
> +	uint32_t dev;
> +	uint32_t ino;
> +	uint32_t mode;
> +	uint32_t uid;
> +	uint32_t gid;
> +	uint32_t size;
>  	unsigned char sha1[20];
> -	unsigned short flags;
> -	unsigned short flags2;
> +	uint16_t flags;
> +	uint16_t flags2;
>  	char name[FLEX_ARRAY]; /* more */
>  };
Previous: Eric SunshineNext: Thomas Gummerer
Message 5 of 55 in “Index-v5”
  1. 00/24 Index-v5Thomas Gummerer, Aug 18, 2013
  2. 01/24 t2104: Don't fail for index versions other than [23]Thomas Gummerer, Aug 18, 2013
  3. 02/24 read-cache: use fixed width integer typesThomas Gummerer, Aug 18, 2013
  4. Eric SunshineAug 18, 2013
  5. Junio C HamanoAug 20, 2013
  6. Thomas GummererAug 21, 2013
  7. 03/24 read-cache: split index file version specific functionalityThomas Gummerer, Aug 18, 2013
  8. 04/24 read-cache: clear version in discard_index()Thomas Gummerer, Aug 18, 2013
  9. Junio C HamanoAug 20, 2013
  10. Thomas GummererAug 21, 2013
  11. 05/24 read-cache: move index v2 specific functions to their own fileThomas Gummerer, Aug 18, 2013
  12. 06/24 read-cache: Don't compare uid, gid and ino on cygwinThomas Gummerer, Aug 18, 2013
  13. Ramsay JonesAug 18, 2013
  14. Thomas GummererAug 20, 2013
  15. 07/24 read-cache: Re-read index if index file changedThomas Gummerer, Aug 18, 2013
  16. 08/24 add documentation for the index apiThomas Gummerer, Aug 18, 2013
  17. Eric SunshineAug 18, 2013
  18. 09/24 read-cache: add index reading apiThomas Gummerer, Aug 18, 2013
  19. 10/24 make sure partially read index is not changedThomas Gummerer, Aug 18, 2013
  20. Eric SunshineAug 18, 2013
  21. Thomas GummererAug 20, 2013
  22. 11/24 grep.c: use index apiThomas Gummerer, Aug 18, 2013
  23. 12/24 ls-files.c: use index apiThomas Gummerer, Aug 18, 2013
  24. 13/24 documentation: add documentation of the index-v5 file formatThomas Gummerer, Aug 18, 2013
  25. 14/24 read-cache: make in-memory format aware of stat_crcThomas Gummerer, Aug 18, 2013
  26. 15/24 read-cache: read index-v5Thomas Gummerer, Aug 18, 2013
  27. Eric SunshineAug 19, 2013
  28. Duy NguyenAug 20, 2013
  29. Thomas GummererAug 20, 2013
  30. Duy NguyenAug 21, 2013
  31. Duy NguyenAug 20, 2013
  32. Thomas GummererAug 20, 2013
  33. Duy NguyenAug 23, 2013
  34. 16/24 read-cache: read resolve-undo dataThomas Gummerer, Aug 18, 2013
  35. Eric SunshineAug 19, 2013
  36. 17/24 read-cache: read cache-tree in index-v5Thomas Gummerer, Aug 18, 2013
  37. Duy NguyenAug 24, 2013
  38. Thomas GummererNov 25, 2013
  39. 18/24 read-cache: write index-v5Thomas Gummerer, Aug 18, 2013
  40. Duy NguyenAug 24, 2013
  41. Thomas GummererNov 25, 2013
  42. Duy NguyenAug 24, 2013
  43. Duy NguyenAug 24, 2013
  44. 19/24 read-cache: write index-v5 cache-tree dataThomas Gummerer, Aug 18, 2013
  45. 20/24 read-cache: write resolve-undo data for index-v5Thomas Gummerer, Aug 18, 2013
  46. 21/24 update-index.c: rewrite index when index-version is givenThomas Gummerer, Aug 18, 2013
  47. 22/24 p0003-index.sh: add perf test for the index formatsThomas Gummerer, Aug 18, 2013
  48. 23/24 introduce GIT_INDEX_VERSION environment variableThomas Gummerer, Aug 18, 2013
  49. Duy NguyenAug 21, 2013
  50. Thomas GummererAug 21, 2013
  51. 24/24 test-lib: allow setting the index format versionThomas Gummerer, Aug 18, 2013
  52. Duy NguyenAug 24, 2013
  53. Junio C HamanoAug 25, 2013
  54. Duy NguyenAug 25, 2013
  55. Thomas GummererAug 31, 2013

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