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Be a little more skeptical of dev/ino matches when reading cpio files.

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This eliminates some false-positives in the hardlink detection logic.
This commit is contained in:
Tim Kientzle 2009-12-29 05:50:34 +00:00
parent 023a748ef3
commit 7f16f13149
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=201163
1 changed files with 33 additions and 33 deletions
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66
lib/libarchive/archive_read_support_format_cpio.c
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@ -92,7 +92,7 @@ struct links_entry {
struct links_entry *previous;
int links;
dev_t dev;
ino_t ino;
int64_t ino;
char *name;
};
@ -727,51 +727,51 @@ atol16(const char *p, unsigned char_cnt)
static void
record_hardlink(struct cpio *cpio, struct archive_entry *entry)
{
struct links_entry *le;
struct links_entry *le;
dev_t dev;
ino_t ino;
int64_t ino;
if (archive_entry_nlink(entry) <= 1)
return;
dev = archive_entry_dev(entry);
ino = archive_entry_ino(entry);
ino = archive_entry_ino64(entry);
/*
* First look in the list of multiply-linked files. If we've
* already dumped it, convert this entry to a hard link entry.
*/
for (le = cpio->links_head; le; le = le->next) {
if (le->dev == dev && le->ino == ino) {
archive_entry_copy_hardlink(entry, le->name);
/*
* First look in the list of multiply-linked files. If we've
* already dumped it, convert this entry to a hard link entry.
*/
for (le = cpio->links_head; le; le = le->next) {
if (le->dev == dev && le->ino == ino) {
archive_entry_copy_hardlink(entry, le->name);
if (--le->links <= 0) {
if (le->previous != NULL)
le->previous->next = le->next;
if (le->next != NULL)
le->next->previous = le->previous;
if (cpio->links_head == le)
cpio->links_head = le->next;
if (--le->links <= 0) {
if (le->previous != NULL)
le->previous->next = le->next;
if (le->next != NULL)
le->next->previous = le->previous;
if (cpio->links_head == le)
cpio->links_head = le->next;
free(le->name);
free(le);
}
free(le);
}
return;
}
}
return;
}
}
le = (struct links_entry *)malloc(sizeof(struct links_entry));
le = (struct links_entry *)malloc(sizeof(struct links_entry));
if (le == NULL)
__archive_errx(1, "Out of memory adding file to list");
if (cpio->links_head != NULL)
cpio->links_head->previous = le;
le->next = cpio->links_head;
le->previous = NULL;
cpio->links_head = le;
le->dev = dev;
le->ino = ino;
le->links = archive_entry_nlink(entry) - 1;
le->name = strdup(archive_entry_pathname(entry));
if (cpio->links_head != NULL)
cpio->links_head->previous = le;
le->next = cpio->links_head;
le->previous = NULL;
cpio->links_head = le;
le->dev = dev;
le->ino = ino;
le->links = archive_entry_nlink(entry) - 1;
le->name = strdup(archive_entry_pathname(entry));
if (le->name == NULL)
__archive_errx(1, "Out of memory adding file to list");
}