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packed-ref cache: forbid dot-components in refnames

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Since v1.7.9-rc1~10^2 (write_head_info(): handle "extra refs" locally,
2012-01-06), this trick to keep track of ".have" refs that are only
valid on the wire and not on the filesystem is not needed any more.

Simplify by removing support for the REFNAME_DOT_COMPONENT flag.

This means we'll be slightly stricter with invalid refs found in a
packed-refs file or during clone.  read_loose_refs() already checks
for and skips refnames with .components so it is not affected.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Reviewed-by: Ronnie Sahlberg <sahlberg@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jonathan Nieder
2014-09-26 12:22:22 -07:00
committed by Junio C Hamano
parent 18f29fc61e
commit f3cc52d840
2 changed files with 4 additions and 16 deletions
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14
refs.c
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@ -70,16 +70,8 @@ static int check_refname_component(const char *refname, int flags)
out:
if (cp == refname)
return 0; /* Component has zero length. */
if (refname[0] == '.') {
if (!(flags & REFNAME_DOT_COMPONENT))
return -1; /* Component starts with '.'. */
/*
* Even if leading dots are allowed, don't allow "."
* as a component (".." is prevented by a rule above).
*/
if (refname[1] == '\0')
return -1; /* Component equals ".". */
}
if (refname[0] == '.')
return -1; /* Component starts with '.'. */
if (cp - refname >= LOCK_SUFFIX_LEN &&
!memcmp(cp - LOCK_SUFFIX_LEN, LOCK_SUFFIX, LOCK_SUFFIX_LEN))
return -1; /* Refname ends with ".lock". */
@ -290,7 +282,7 @@ static struct ref_entry *create_ref_entry(const char *refname,
struct ref_entry *ref;
if (check_name &&
check_refname_format(refname, REFNAME_ALLOW_ONELEVEL|REFNAME_DOT_COMPONENT))
check_refname_format(refname, REFNAME_ALLOW_ONELEVEL))
die("Reference has invalid format: '%s'", refname);
len = strlen(refname) + 1;
ref = xmalloc(sizeof(struct ref_entry) + len);