From: Michael Haggerty <mhagger@alum.mit.edu>
To: Junio C Hamano <gitster@pobox.com>
Cc: Johan Herland <johan@herland.net>,
Johannes Schindelin <johannes.schindelin@gmx.de>,
git@vger.kernel.org, Michael Haggerty <mhagger@alum.mit.edu>
Subject: [PATCH 06/12] load_subtree(): check earlier whether an internal node is a tree entry
Date: Sat, 26 Aug 2017 10:28:06 +0200 [thread overview]
Message-ID: <22e8ace89f28fd2fae31c08b8e86e03a4833e694.1503734566.git.mhagger@alum.mit.edu> (raw)
In-Reply-To: <cover.1503734566.git.mhagger@alum.mit.edu>
If an entry is not a tree entry, then it cannot possibly be an
internal node. But the old code checked this condition only after
allocating a leaf_node object and therefore leaked that memory.
Instead, check before even entering this branch of the code.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
notes.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/notes.c b/notes.c
index 768902055e..ac69c5aa18 100644
--- a/notes.c
+++ b/notes.c
@@ -449,6 +449,11 @@ static void load_subtree(struct notes_tree *t, struct leaf_node *subtree,
oidcpy(&l->val_oid, entry.oid);
} else if (path_len == 2) {
/* This is potentially an internal node */
+
+ if (!S_ISDIR(entry.mode))
+ /* internal nodes must be trees */
+ goto handle_non_note;
+
if (get_oid_hex_segment(entry.path, 2,
object_oid.hash + prefix_len,
GIT_SHA1_RAWSZ - prefix_len) < 0)
@@ -459,8 +464,6 @@ static void load_subtree(struct notes_tree *t, struct leaf_node *subtree,
xcalloc(1, sizeof(struct leaf_node));
oidcpy(&l->key_oid, &object_oid);
oidcpy(&l->val_oid, entry.oid);
- if (!S_ISDIR(entry.mode))
- goto handle_non_note; /* not subtree */
l->key_oid.hash[KEY_INDEX] = (unsigned char) (prefix_len + 1);
} else {
/* This can't be part of a note */
--
2.11.0
next prev parent reply other threads:[~2017-08-26 8:28 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-26 8:28 [PATCH 00/12] Clean up notes-related code around `load_subtree()` Michael Haggerty
2017-08-26 8:28 ` [PATCH 01/12] notes: make GET_NIBBLE macro more robust Michael Haggerty
2017-08-26 8:28 ` [PATCH 02/12] load_subtree(): remove unnecessary conditional Michael Haggerty
2017-08-26 16:38 ` Junio C Hamano
2017-08-27 6:37 ` Michael Haggerty
2017-08-28 6:55 ` Michael Haggerty
2017-09-01 21:53 ` Junio C Hamano
2017-08-26 8:28 ` [PATCH 03/12] load_subtree(): reduce the scope of some local variables Michael Haggerty
2017-08-26 8:28 ` [PATCH 04/12] load_subtree(): fix incorrect comment Michael Haggerty
2017-08-26 8:28 ` [PATCH 05/12] load_subtree(): separate logic for internal vs. terminal entries Michael Haggerty
2017-08-26 8:28 ` Michael Haggerty [this message]
2017-08-26 8:28 ` [PATCH 07/12] load_subtree(): only consider blobs to be potential notes Michael Haggerty
2017-08-26 8:28 ` [PATCH 08/12] get_oid_hex_segment(): return 0 on success Michael Haggerty
2017-08-26 8:28 ` [PATCH 09/12] load_subtree(): combine some common code Michael Haggerty
2017-08-26 8:28 ` [PATCH 10/12] get_oid_hex_segment(): don't pad the rest of `oid` Michael Haggerty
2017-08-26 8:28 ` [PATCH 11/12] hex_to_bytes(): simpler replacement for `get_oid_hex_segment()` Michael Haggerty
2017-08-26 8:28 ` [PATCH 12/12] load_subtree(): declare some variables to be `size_t` Michael Haggerty
2017-08-26 23:36 ` [PATCH 00/12] Clean up notes-related code around `load_subtree()` Johan Herland
2017-09-09 10:31 ` Jeff King
2017-09-10 4:45 ` Michael Haggerty
2017-09-10 7:39 ` Jeff King
2017-09-12 6:47 ` Michael Haggerty
2017-09-12 11:55 ` Lars Schneider
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