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Diffstat (limited to 'refs.c')
-rw-r--r--refs.c122
1 files changed, 98 insertions, 24 deletions
diff --git a/refs.c b/refs.c
index dd9c9ba..d6307ae 100644
--- a/refs.c
+++ b/refs.c
@@ -6,6 +6,7 @@
/* ISSYMREF=01 and ISPACKED=02 are public interfaces */
#define REF_KNOWS_PEELED 04
+#define REF_BROKEN 010
struct ref_list {
struct ref_list *next;
@@ -275,8 +276,10 @@ static struct ref_list *get_ref_dir(const char *base, struct ref_list *list)
list = get_ref_dir(ref, list);
continue;
}
- if (!resolve_ref(ref, sha1, 1, &flag))
+ if (!resolve_ref(ref, sha1, 1, &flag)) {
hashclr(sha1);
+ flag |= REF_BROKEN;
+ }
list = add_ref(ref, sha1, flag, list, NULL);
}
free(ref);
@@ -286,6 +289,7 @@ static struct ref_list *get_ref_dir(const char *base, struct ref_list *list)
}
struct warn_if_dangling_data {
+ FILE *fp;
const char *refname;
const char *msg_fmt;
};
@@ -304,13 +308,13 @@ static int warn_if_dangling_symref(const char *refname, const unsigned char *sha
if (!resolves_to || strcmp(resolves_to, d->refname))
return 0;
- printf(d->msg_fmt, refname);
+ fprintf(d->fp, d->msg_fmt, refname);
return 0;
}
-void warn_dangling_symref(const char *msg_fmt, const char *refname)
+void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname)
{
- struct warn_if_dangling_data data = { refname, msg_fmt };
+ struct warn_if_dangling_data data = { fp, refname, msg_fmt };
for_each_rawref(warn_if_dangling_symref, &data);
}
@@ -518,6 +522,13 @@ const char *resolve_ref(const char *ref, unsigned char *sha1, int reading, int *
return ref;
}
+/* The argument to filter_refs */
+struct ref_filter {
+ const char *pattern;
+ each_ref_fn *fn;
+ void *cb_data;
+};
+
int read_ref(const char *ref, unsigned char *sha1)
{
if (resolve_ref(ref, sha1, 1, NULL))
@@ -531,10 +542,10 @@ static int do_one_ref(const char *base, each_ref_fn fn, int trim,
{
if (strncmp(base, entry->name, trim))
return 0;
- /* Is this a "negative ref" that represents a deleted ref? */
- if (is_null_sha1(entry->sha1))
- return 0;
+
if (!(flags & DO_FOR_EACH_INCLUDE_BROKEN)) {
+ if (entry->flag & REF_BROKEN)
+ return 0; /* ignore dangling symref */
if (!has_sha1_file(entry->sha1)) {
error("%s does not point to a valid object!", entry->name);
return 0;
@@ -544,6 +555,15 @@ static int do_one_ref(const char *base, each_ref_fn fn, int trim,
return fn(entry->name + trim, entry->sha1, entry->flag, cb_data);
}
+static int filter_refs(const char *ref, const unsigned char *sha, int flags,
+ void *data)
+{
+ struct ref_filter *filter = (struct ref_filter *)data;
+ if (fnmatch(filter->pattern, ref, 0))
+ return 0;
+ return filter->fn(ref, sha, flags, filter->cb_data);
+}
+
int peel_ref(const char *ref, unsigned char *sha1)
{
int flag;
@@ -668,6 +688,46 @@ int for_each_remote_ref(each_ref_fn fn, void *cb_data)
return for_each_ref_in("refs/remotes/", fn, cb_data);
}
+int for_each_replace_ref(each_ref_fn fn, void *cb_data)
+{
+ return do_for_each_ref("refs/replace/", fn, 13, 0, cb_data);
+}
+
+int for_each_glob_ref_in(each_ref_fn fn, const char *pattern,
+ const char *prefix, void *cb_data)
+{
+ struct strbuf real_pattern = STRBUF_INIT;
+ struct ref_filter filter;
+ int ret;
+
+ if (!prefix && prefixcmp(pattern, "refs/"))
+ strbuf_addstr(&real_pattern, "refs/");
+ else if (prefix)
+ strbuf_addstr(&real_pattern, prefix);
+ strbuf_addstr(&real_pattern, pattern);
+
+ if (!has_glob_specials(pattern)) {
+ /* Append implied '/' '*' if not present. */
+ if (real_pattern.buf[real_pattern.len - 1] != '/')
+ strbuf_addch(&real_pattern, '/');
+ /* No need to check for '*', there is none. */
+ strbuf_addch(&real_pattern, '*');
+ }
+
+ filter.pattern = real_pattern.buf;
+ filter.fn = fn;
+ filter.cb_data = cb_data;
+ ret = for_each_ref(filter_refs, &filter);
+
+ strbuf_release(&real_pattern);
+ return ret;
+}
+
+int for_each_glob_ref(each_ref_fn fn, const char *pattern, void *cb_data)
+{
+ return for_each_glob_ref_in(fn, pattern, NULL, cb_data);
+}
+
int for_each_rawref(each_ref_fn fn, void *cb_data)
{
return do_for_each_ref("refs/", fn, 0,
@@ -967,8 +1027,10 @@ static int repack_without_ref(const char *refname)
if (!found)
return 0;
fd = hold_lock_file_for_update(&packlock, git_path("packed-refs"), 0);
- if (fd < 0)
+ if (fd < 0) {
+ unable_to_lock_error(git_path("packed-refs"), errno);
return error("cannot delete '%s' from packed refs", refname);
+ }
for (list = packed_ref_list; list; list = list->next) {
char line[PATH_MAX + 100];
@@ -1024,6 +1086,15 @@ int delete_ref(const char *refname, const unsigned char *sha1, int delopt)
return ret;
}
+/*
+ * People using contrib's git-new-workdir have .git/logs/refs ->
+ * /some/other/path/.git/logs/refs, and that may live on another device.
+ *
+ * IOW, to avoid cross device rename errors, the temporary renamed log must
+ * live into logs/refs.
+ */
+#define TMP_RENAMED_LOG "logs/refs/.tmp-renamed-log"
+
int rename_ref(const char *oldref, const char *newref, const char *logmsg)
{
static const char renamed_ref[] = "RENAMED-REF";
@@ -1057,8 +1128,8 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg)
if (write_ref_sha1(lock, orig_sha1, logmsg))
return error("unable to save current sha1 in %s", renamed_ref);
- if (log && rename(git_path("logs/%s", oldref), git_path("tmp-renamed-log")))
- return error("unable to move logfile logs/%s to tmp-renamed-log: %s",
+ if (log && rename(git_path("logs/%s", oldref), git_path(TMP_RENAMED_LOG)))
+ return error("unable to move logfile logs/%s to "TMP_RENAMED_LOG": %s",
oldref, strerror(errno));
if (delete_ref(oldref, orig_sha1, REF_NODEREF)) {
@@ -1084,7 +1155,7 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg)
}
retry:
- if (log && rename(git_path("tmp-renamed-log"), git_path("logs/%s", newref))) {
+ if (log && rename(git_path(TMP_RENAMED_LOG), git_path("logs/%s", newref))) {
if (errno==EISDIR || errno==ENOTDIR) {
/*
* rename(a, b) when b is an existing
@@ -1097,7 +1168,7 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg)
}
goto retry;
} else {
- error("unable to move logfile tmp-renamed-log to logs/%s: %s",
+ error("unable to move logfile "TMP_RENAMED_LOG" to logs/%s: %s",
newref, strerror(errno));
goto rollback;
}
@@ -1137,8 +1208,8 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg)
error("unable to restore logfile %s from %s: %s",
oldref, newref, strerror(errno));
if (!logmoved && log &&
- rename(git_path("tmp-renamed-log"), git_path("logs/%s", oldref)))
- error("unable to restore logfile %s from tmp-renamed-log: %s",
+ rename(git_path(TMP_RENAMED_LOG), git_path("logs/%s", oldref)))
+ error("unable to restore logfile %s from "TMP_RENAMED_LOG": %s",
oldref, strerror(errno));
return 1;
@@ -1214,6 +1285,7 @@ static int log_ref_write(const char *ref_name, const unsigned char *old_sha1,
if (log_all_ref_updates &&
(!prefixcmp(ref_name, "refs/heads/") ||
!prefixcmp(ref_name, "refs/remotes/") ||
+ !prefixcmp(ref_name, "refs/notes/") ||
!strcmp(ref_name, "HEAD"))) {
if (safe_create_leading_directories(log_file) < 0)
return error("unable to create directory for %s",
@@ -1513,7 +1585,7 @@ int for_each_recent_reflog_ent(const char *ref, each_reflog_ent_fn fn, long ofs,
{
const char *logfile;
FILE *logfp;
- char buf[1024];
+ struct strbuf sb = STRBUF_INIT;
int ret = 0;
logfile = git_path("logs/%s", ref);
@@ -1526,24 +1598,24 @@ int for_each_recent_reflog_ent(const char *ref, each_reflog_ent_fn fn, long ofs,
if (fstat(fileno(logfp), &statbuf) ||
statbuf.st_size < ofs ||
fseek(logfp, -ofs, SEEK_END) ||
- fgets(buf, sizeof(buf), logfp)) {
+ strbuf_getwholeline(&sb, logfp, '\n')) {
fclose(logfp);
+ strbuf_release(&sb);
return -1;
}
}
- while (fgets(buf, sizeof(buf), logfp)) {
+ while (!strbuf_getwholeline(&sb, logfp, '\n')) {
unsigned char osha1[20], nsha1[20];
char *email_end, *message;
unsigned long timestamp;
- int len, tz;
+ int tz;
/* old SP new SP name <email> SP time TAB msg LF */
- len = strlen(buf);
- if (len < 83 || buf[len-1] != '\n' ||
- get_sha1_hex(buf, osha1) || buf[40] != ' ' ||
- get_sha1_hex(buf + 41, nsha1) || buf[81] != ' ' ||
- !(email_end = strchr(buf + 82, '>')) ||
+ if (sb.len < 83 || sb.buf[sb.len - 1] != '\n' ||
+ get_sha1_hex(sb.buf, osha1) || sb.buf[40] != ' ' ||
+ get_sha1_hex(sb.buf + 41, nsha1) || sb.buf[81] != ' ' ||
+ !(email_end = strchr(sb.buf + 82, '>')) ||
email_end[1] != ' ' ||
!(timestamp = strtoul(email_end + 2, &message, 10)) ||
!message || message[0] != ' ' ||
@@ -1557,11 +1629,13 @@ int for_each_recent_reflog_ent(const char *ref, each_reflog_ent_fn fn, long ofs,
message += 6;
else
message += 7;
- ret = fn(osha1, nsha1, buf+82, timestamp, tz, message, cb_data);
+ ret = fn(osha1, nsha1, sb.buf + 82, timestamp, tz, message,
+ cb_data);
if (ret)
break;
}
fclose(logfp);
+ strbuf_release(&sb);
return ret;
}
generated by cgit v0.10.2-6-g49f6 at 2024-04-30 16:50:32 (GMT)