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[PATCH] Add git-verify-pack command.

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Given a list of <pack>.idx files, this command validates the
index file and the corresponding .pack file for consistency.

This patch also uses the same validation mechanism in fsck-cache
when the --full flag is used.

During normal operation, sha1_file.c verifies that a given .idx
file matches the .pack file by comparing the SHA1 checksum
stored in .idx file and .pack file as a minimum sanity check.
We may further want to check the pack signature and version when
we map the pack, but that would be a separate patch.

Earlier, errors to map a pack file was not flagged fatal but led
to a random fatal error later.  This version explicitly die()s
when such an error is detected.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Junio C Hamano
2005-06-29 02:51:27 -07:00
committed by Linus Torvalds
parent 3c84974207
commit f9253394a2
10 changed files with 231 additions and 18 deletions
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4
cache.h
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@ -246,9 +246,13 @@ extern struct packed_git {
unsigned int *index_base;
void *pack_base;
unsigned int pack_last_used;
unsigned int pack_use_cnt;
char pack_name[0]; /* something like ".git/objects/pack/xxxxx.pack" */
} *packed_git;
extern void prepare_packed_git(void);
extern int use_packed_git(struct packed_git *);
extern void unuse_packed_git(struct packed_git *);
extern struct packed_git *add_packed_git(char *, int);
extern int num_packed_objects(const struct packed_git *p);
extern int nth_packed_object_sha1(const struct packed_git *, int, unsigned char*);