The optional new config option `receive.fsck.skiplist` specifies the path
to a file listing the names, i.e. SHA-1s, one per line, of objects that
are to be ignored by `git receive-pack` when `receive.fsckObjects = true`.
This is extremely handy in case of legacy repositories where it would
cause more pain to change incorrect objects than to live with them
(e.g. a duplicate 'author' line in an early commit object).
The intended use case is for server administrators to inspect objects
that are reported by `git push` as being too problematic to enter the
repository, and to add the objects' SHA-1 to a (preferably sorted) file
when the objects are legitimate, i.e. when it is determined that those
problematic objects should be allowed to enter the server.
Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
builtin/receive-pack.c | 9 +++++++
fsck.c | 53 +++++++++++++++++++++++++++++++++++++++++
fsck.h | 1 +
t/t5504-fetch-receive-strict.sh | 12 ++++++++++
4 files changed, 75 insertions(+)
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index da2e019..40514c2 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -116,6 +116,15 @@ static int receive_pack_config(const char *var, const char *value, void *cb)
return 0;
}
+ if (starts_with(var, "receive.fsck.skiplist")) {
+ const char *path = is_absolute_path(value) ?
+ value : git_path("%s", value);
+ if (fsck_severity.len)
+ strbuf_addch(&fsck_severity, ',');
+ strbuf_addf(&fsck_severity, "skiplist=%s", path);
+ return 0;
+ }
+
if (starts_with(var, "receive.fsck.")) {
if (fsck_severity.len)
strbuf_addch(&fsck_severity, ',');
diff --git a/fsck.c b/fsck.c
index 480cd87..dbf9fa1 100644
--- a/fsck.c
+++ b/fsck.c
@@ -8,6 +8,7 @@
#include "fsck.h"
#include "refs.h"
#include "utf8.h"
+#include "sha1-array.h"
#define FSCK_FATAL -1
#define FSCK_INFO -2
@@ -117,6 +118,43 @@ static int fsck_msg_severity(enum fsck_msg_id msg_id,
return severity;
}
+static void init_skiplist(struct fsck_options *options, const char *path)
+{
+ static struct sha1_array skiplist = SHA1_ARRAY_INIT;
+ int sorted, fd;
+ char buffer[41];
+ unsigned char sha1[20];
+
+ if (options->skiplist)
+ sorted = options->skiplist->sorted;
+ else {
+ sorted = 1;
+ options->skiplist = &skiplist;
+ }
+
+ fd = open(path, O_RDONLY);
+ if (fd < 0)
+ die("Could not open skip list: %s", path);
+ for (;;) {
+ int result = read_in_full(fd, buffer, sizeof(buffer));
+ if (result < 0)
+ die_errno("Could not read '%s'", path);
+ if (!result)
+ break;
+ if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n')
+ die("Invalid SHA-1: %s", buffer);
+ sha1_array_append(&skiplist, sha1);
+ if (sorted && skiplist.nr > 1 &&
+ hashcmp(skiplist.sha1[skiplist.nr - 2],
+ sha1) > 0)
+ sorted = 0;
+ }
+ close(fd);
+
+ if (sorted)
+ skiplist.sorted = 1;
+}
+
static inline int substrcmp(const char *string, int len, const char *match)
{
int match_len = strlen(match);
@@ -156,6 +194,17 @@ void fsck_set_severity(struct fsck_options *options, const char *mode)
severity = FSCK_WARN;
else if (!substrcmp(mode, equal, "ignore"))
severity = FSCK_IGNORE;
+ else if (!substrcmp(mode, equal, "skiplist")) {
+ char *path = xstrndup(mode + equal + 1,
+ len - equal - 1);
+
+ if (equal == len)
+ die("skiplist requires a path");
+ init_skiplist(options, path);
+ free(path);
+ mode += len;
+ continue;
+ }
else
die("Unknown fsck message severity: '%.*s'",
equal, mode);
@@ -700,6 +749,10 @@ static int fsck_tag(struct tag *tag, const char *data,
int fsck_object(struct object *obj, void *data, unsigned long size,
struct fsck_options *options)
{
+ if (options->skiplist &&
+ sha1_array_lookup(options->skiplist, obj->sha1) >= 0)
+ return 0;
+
if (!obj)
return report(options, obj, FSCK_MSG_INVALID_OBJECT_SHA1, "no valid object to fsck");
diff --git a/fsck.h b/fsck.h
index 7be6c50..cae280e 100644
--- a/fsck.h
+++ b/fsck.h
@@ -29,6 +29,7 @@ struct fsck_options {
fsck_error error_func;
unsigned strict:1;
int *msg_severity;
+ struct sha1_array *skiplist;
};
#define FSCK_OPTIONS_DEFAULT { NULL, fsck_error_function, 0, NULL }
diff --git a/t/t5504-fetch-receive-strict.sh b/t/t5504-fetch-receive-strict.sh
index e81cedb..21fa9c8 100755
--- a/t/t5504-fetch-receive-strict.sh
+++ b/t/t5504-fetch-receive-strict.sh
@@ -123,6 +123,18 @@ committer Bugs Bunny <bugs@xxxxxx> 1234567890 +0000
This commit object intentionally broken
EOF
+test_expect_success 'push with receive.fsck.skiplist' '
+ commit="$(git hash-object -t commit -w --stdin < bogus-commit)" &&
+ git push . $commit:refs/heads/bogus &&
+ rm -rf dst &&
+ git init dst &&
+ git --git-dir=dst/.git config receive.fsckobjects true &&
+ test_must_fail git push --porcelain dst bogus &&
+ git --git-dir=dst/.git config receive.fsck.skiplist SKIP &&
+ echo $commit > dst/.git/SKIP &&
+ git push --porcelain dst bogus
+'
+
test_expect_success 'push with receive.fsck.warn = missing-email' '
commit="$(git hash-object -t commit -w --stdin < bogus-commit)" &&
git push . $commit:refs/heads/bogus &&
--
2.0.0.rc3.9669.g840d1f9
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