kernel
/
git
mirror of https://git.kernel.org/pub/scm/git/git.git
1
0
Fork 0
Code Releases Activity

Make fsck-cache start parsing the object types, and checking their 

internal format.

This doesn't yet check the reachability information, but we're getting
there.. Slowly.
maint
Linus Torvalds 2005-04-08 17:11:14 -07:00
parent 9426167765
commit 1ea34e365b
1 changed files with 43 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
fsck-cache.c
View File

@ -4,16 +4,12 @@
#include <dirent.h>

/*
* These three functions should build up a graph in memory about
* These two functions should build up a graph in memory about
* what objects we've referenced, and found, and types..
*
* Right now we don't do that kind of reachability checking. Yet.
*/
static void fsck_tree(void *data, unsigned long size)
{
}

static void fsck_commit(void *data, unsigned long size)
static void mark_needs_sha1(unsigned char *parent, const char * type, unsigned char *child)
{
}

@ -22,15 +18,50 @@ static int mark_sha1_seen(unsigned char *sha1, char *tag)
return 0;
}

static int fsck_tree(unsigned char *sha1, void *data, unsigned long size)
{
while (size) {
int len = 1+strlen(data);
unsigned char *file_sha1 = data + len;
char *path = strchr(data, ' ');
if (size < len + 20 || !path)
return -1;
data += len + 20;
size -= len + 20;
mark_needs_sha1(sha1, "blob", file_sha1);
}
}

static int fsck_commit(unsigned char *sha1, void *data, unsigned long size)
{
unsigned char tree_sha1[20];
unsigned char parent_sha1[20];

if (memcmp(data, "tree ", 5))
return -1;
if (get_sha1_hex(data + 5, tree_sha1) < 0)
return -1;
mark_needs_sha1(sha1, "tree", tree_sha1);
data += 5 + 40 + 1; /* "tree " + <hex sha1> + '\n' */
while (!memcmp(data, "parent ", 7)) {
if (get_sha1_hex(data + 7, parent_sha1) < 0)
return -1;
mark_needs_sha1(sha1, "commit", parent_sha1);
data += 7 + 40 + 1; /* "parent " + <hex sha1> + '\n' */
}
}

static int fsck_entry(unsigned char *sha1, char *tag, void *data, unsigned long size)
{
if (!strcmp(tag, "blob"))
if (!strcmp(tag, "blob")) {
/* Nothing to check */;
else if (!strcmp(tag, "tree"))
fsck_tree(data, size);
else if (!strcmp(tag, "commit"))
fsck_commit(data, size);
else
} else if (!strcmp(tag, "tree")) {
if (fsck_tree(sha1, data, size) < 0)
return -1;
} else if (!strcmp(tag, "commit")) {
if (fsck_commit(sha1, data, size) < 0)
return -1;
} else
return -1;
return mark_sha1_seen(sha1, tag);
}