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refs.c: change resolve_ref_unsafe reading argument to be a flags field 

resolve_ref_unsafe takes a boolean argument for reading (a nonexistent ref
resolves successfully for writing but not for reading).  Change this to be
a flags field instead, and pass the new constant RESOLVE_REF_READING when
we want this behaviour.

While at it, swap two of the arguments in the function to put output
arguments at the end.  As a nice side effect, this ensures that we can
catch callers that were unaware of the new API so they can be audited.

Give the wrapper functions resolve_refdup and read_ref_full the same
treatment for consistency.

Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Ronnie Sahlberg 2014-07-15 12:59:36 -07:00 committed by Junio C Hamano
parent aae383db8c
commit 7695d118e5
28 changed files with 124 additions and 92 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
branch.c
View File

@ -170,7 +170,7 @@ int validate_new_branchname(const char *name, struct strbuf *ref,
const char *head;
unsigned char sha1[20];

head = resolve_ref_unsafe("HEAD", sha1, 0, NULL);
head = resolve_ref_unsafe("HEAD", 0, sha1, NULL);
if (!is_bare_repository() && head && !strcmp(head, ref->buf))
die(_("Cannot force update the current branch."));
}

2
builtin/blame.c
View File

@ -2286,7 +2286,7 @@ static struct commit *fake_working_tree_commit(struct diff_options *opt,
commit->date = now;
parent_tail = &commit->parents;

if (!resolve_ref_unsafe("HEAD", head_sha1, 1, NULL))
if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, head_sha1, NULL))
die("no such ref: HEAD");

parent_tail = append_parent(parent_tail, head_sha1);

9
builtin/branch.c
View File

@ -131,7 +131,8 @@ static int branch_merged(int kind, const char *name,
branch->merge[0] &&
branch->merge[0]->dst &&
(reference_name = reference_name_to_free =
resolve_refdup(branch->merge[0]->dst, sha1, 1, NULL)) != NULL)
resolve_refdup(branch->merge[0]->dst, RESOLVE_REF_READING,
sha1, NULL)) != NULL)
reference_rev = lookup_commit_reference(sha1);
}
if (!reference_rev)
@ -235,7 +236,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
free(name);

name = mkpathdup(fmt, bname.buf);
target = resolve_ref_unsafe(name, sha1, 0, &flags);
target = resolve_ref_unsafe(name, 0, sha1, &flags);
if (!target ||
(!(flags & REF_ISSYMREF) && is_null_sha1(sha1))) {
error(remote_branch
@ -299,7 +300,7 @@ static char *resolve_symref(const char *src, const char *prefix)
int flag;
const char *dst;

dst = resolve_ref_unsafe(src, sha1, 0, &flag);
dst = resolve_ref_unsafe(src, 0, sha1, &flag);
if (!(dst && (flag & REF_ISSYMREF)))
return NULL;
if (prefix)
@ -869,7 +870,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)

track = git_branch_track;

head = resolve_refdup("HEAD", head_sha1, 0, NULL);
head = resolve_refdup("HEAD", 0, head_sha1, NULL);
if (!head)
die(_("Failed to resolve HEAD as a valid ref."));
if (!strcmp(head, "HEAD"))

6
builtin/checkout.c
View File

@ -355,7 +355,7 @@ static int checkout_paths(const struct checkout_opts *opts,
if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
die(_("unable to write new index file"));

read_ref_full("HEAD", rev, 0, &flag);
read_ref_full("HEAD", 0, rev, &flag);
head = lookup_commit_reference_gently(rev, 1);

errs |= post_checkout_hook(head, head, 0);
@ -775,7 +775,7 @@ static int switch_branches(const struct checkout_opts *opts,
unsigned char rev[20];
int flag, writeout_error = 0;
memset(&old, 0, sizeof(old));
old.path = path_to_free = resolve_refdup("HEAD", rev, 0, &flag);
old.path = path_to_free = resolve_refdup("HEAD", 0, rev, &flag);
old.commit = lookup_commit_reference_gently(rev, 1);
if (!(flag & REF_ISSYMREF))
old.path = NULL;
@ -1072,7 +1072,7 @@ static int checkout_branch(struct checkout_opts *opts,
unsigned char rev[20];
int flag;

if (!read_ref_full("HEAD", rev, 0, &flag) &&
if (!read_ref_full("HEAD", 0, rev, &flag) &&
(flag & REF_ISSYMREF) && is_null_sha1(rev))
return switch_unborn_to_new_branch(opts);
}

2
builtin/clone.c
View File

@ -623,7 +623,7 @@ static int checkout(void)
if (option_no_checkout)
return 0;

head = resolve_refdup("HEAD", sha1, 1, NULL);
head = resolve_refdup("HEAD", RESOLVE_REF_READING, sha1, NULL);
if (!head) {
warning(_("remote HEAD refers to nonexistent ref, "
"unable to checkout.\n"));

2
builtin/commit.c
View File

@ -1515,7 +1515,7 @@ static void print_summary(const char *prefix, const unsigned char *sha1,
rev.diffopt.break_opt = 0;
diff_setup_done(&rev.diffopt);

head = resolve_ref_unsafe("HEAD", junk_sha1, 0, NULL);
head = resolve_ref_unsafe("HEAD", 0, junk_sha1, NULL);
if (!strcmp(head, "HEAD"))
head = _("detached HEAD");
else

2
builtin/fmt-merge-msg.c
View File

@ -602,7 +602,7 @@ int fmt_merge_msg(struct strbuf *in, struct strbuf *out,

/* get current branch */
current_branch = current_branch_to_free =
resolve_refdup("HEAD", head_sha1, 1, NULL);
resolve_refdup("HEAD", RESOLVE_REF_READING, head_sha1, NULL);
if (!current_branch)
die("No current branch");
if (starts_with(current_branch, "refs/heads/"))

6
builtin/for-each-ref.c
View File

@ -635,7 +635,8 @@ static void populate_value(struct refinfo *ref)

if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
unsigned char unused1[20];
ref->symref = resolve_refdup(ref->refname, unused1, 1, NULL);
ref->symref = resolve_refdup(ref->refname, RESOLVE_REF_READING,
unused1, NULL);
if (!ref->symref)
ref->symref = "";
}
@ -693,7 +694,8 @@ static void populate_value(struct refinfo *ref)
const char *head;
unsigned char sha1[20];

head = resolve_ref_unsafe("HEAD", sha1, 1, NULL);
head = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
sha1, NULL);
if (!strcmp(ref->refname, head))
v->s = "*";
else

2
builtin/fsck.c
View File

@ -556,7 +556,7 @@ static int fsck_head_link(void)
if (verbose)
fprintf(stderr, "Checking HEAD link\n");

head_points_at = resolve_ref_unsafe("HEAD", head_sha1, 0, &flag);
head_points_at = resolve_ref_unsafe("HEAD", 0, head_sha1, &flag);
if (!head_points_at)
return error("Invalid HEAD");
if (!strcmp(head_points_at, "HEAD"))

3
builtin/log.c
View File

@ -1400,7 +1400,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
if (check_head) {
unsigned char sha1[20];
const char *ref, *v;
ref = resolve_ref_unsafe("HEAD", sha1, 1, NULL);
ref = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
sha1, NULL);
if (ref && skip_prefix(ref, "refs/heads/", &v))
branch_name = xstrdup(v);
else

2
builtin/merge.c
View File

@ -1101,7 +1101,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
* Check if we are _not_ on a detached HEAD, i.e. if there is a
* current branch.
*/
branch = branch_to_free = resolve_refdup("HEAD", head_sha1, 0, &flag);
branch = branch_to_free = resolve_refdup("HEAD", 0, head_sha1, &flag);
if (branch && starts_with(branch, "refs/heads/"))
branch += 11;
if (!branch || is_null_sha1(head_sha1))

2
builtin/notes.c
View File

@ -702,7 +702,7 @@ static int merge_commit(struct notes_merge_options *o)
init_notes(t, "NOTES_MERGE_PARTIAL", combine_notes_overwrite, 0);

o->local_ref = local_ref_to_free =
resolve_refdup("NOTES_MERGE_REF", sha1, 0, NULL);
resolve_refdup("NOTES_MERGE_REF", 0, sha1, NULL);
if (!o->local_ref)
die("Failed to resolve NOTES_MERGE_REF");


4
builtin/receive-pack.c
View File

@ -909,7 +909,7 @@ static void check_aliased_update(struct command *cmd, struct string_list *list)
int flag;

strbuf_addf(&buf, "%s%s", get_git_namespace(), cmd->ref_name);
dst_name = resolve_ref_unsafe(buf.buf, sha1, 0, &flag);
dst_name = resolve_ref_unsafe(buf.buf, 0, sha1, &flag);
strbuf_release(&buf);

if (!(flag & REF_ISSYMREF))
@ -1070,7 +1070,7 @@ static void execute_commands(struct command *commands,
check_aliased_updates(commands);

free(head_name_to_free);
head_name = head_name_to_free = resolve_refdup("HEAD", sha1, 0, NULL);
head_name = head_name_to_free = resolve_refdup("HEAD", 0, sha1, NULL);

checked_connectivity = 1;
for (cmd = commands; cmd; cmd = cmd->next) {

5
builtin/remote.c
View File

@ -567,7 +567,8 @@ static int read_remote_branches(const char *refname,
strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
if (starts_with(refname, buf.buf)) {
item = string_list_append(rename->remote_branches, xstrdup(refname));
symref = resolve_ref_unsafe(refname, orig_sha1, 1, &flag);
symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
orig_sha1, &flag);
if (flag & REF_ISSYMREF)
item->util = xstrdup(symref);
else
@ -703,7 +704,7 @@ static int mv(int argc, const char **argv)
int flag = 0;
unsigned char sha1[20];

read_ref_full(item->string, sha1, 1, &flag);
read_ref_full(item->string, RESOLVE_REF_READING, sha1, &flag);
if (!(flag & REF_ISSYMREF))
continue;
if (delete_ref(item->string, NULL, REF_NODEREF))

7
builtin/show-branch.c
View File

@ -728,7 +728,9 @@ int cmd_show_branch(int ac, const char **av, const char *prefix)
if (ac == 0) {
static const char *fake_av[2];

fake_av[0] = resolve_refdup("HEAD", sha1, 1, NULL);
fake_av[0] = resolve_refdup("HEAD",
RESOLVE_REF_READING,
sha1, NULL);
fake_av[1] = NULL;
av = fake_av;
ac = 1;
@ -789,7 +791,8 @@ int cmd_show_branch(int ac, const char **av, const char *prefix)
}
}

head_p = resolve_ref_unsafe("HEAD", head_sha1, 1, NULL);
head_p = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
head_sha1, NULL);
if (head_p) {
head_len = strlen(head_p);
memcpy(head, head_p, head_len + 1);

2
builtin/symbolic-ref.c
View File

@ -13,7 +13,7 @@ static int check_symref(const char *HEAD, int quiet, int shorten, int print)
{
unsigned char sha1[20];
int flag;
const char *refname = resolve_ref_unsafe(HEAD, sha1, 0, &flag);
const char *refname = resolve_ref_unsafe(HEAD, 0, sha1, &flag);

if (!refname)
die("No such ref: %s", HEAD);

2
bundle.c
View File

@ -310,7 +310,7 @@ int create_bundle(struct bundle_header *header, const char *path,
continue;
if (dwim_ref(e->name, strlen(e->name), sha1, &ref) != 1)
continue;
if (read_ref_full(e->name, sha1, 1, &flag))
if (read_ref_full(e->name, RESOLVE_REF_READING, sha1, &flag))
flag = 0;
display_ref = (flag & REF_ISSYMREF) ? e->name : ref;


23
cache.h
View File

@ -950,8 +950,8 @@ extern int for_each_abbrev(const char *prefix, each_abbrev_fn, void *);
extern int get_sha1_hex(const char *hex, unsigned char *sha1);

extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
extern int read_ref_full(const char *refname, unsigned char *sha1,
int reading, int *flags);
extern int read_ref_full(const char *refname, int resolve_flags,
unsigned char *sha1, int *flags);
extern int read_ref(const char *refname, unsigned char *sha1);

/*
@ -963,20 +963,20 @@ extern int read_ref(const char *refname, unsigned char *sha1);
* or the input ref.
*
* If the reference cannot be resolved to an object, the behavior
* depends on the "reading" argument:
* depends on the RESOLVE_REF_READING flag:
*
* - If reading is set, return NULL.
* - If RESOLVE_REF_READING is set, return NULL.
*
* - If reading is not set, clear sha1 and return the name of the last
* reference name in the chain, which will either be a non-symbolic
* - If RESOLVE_REF_READING is not set, clear sha1 and return the name of
* the last reference name in the chain, which will either be a non-symbolic
* reference or an undefined reference. If this is a prelude to
* "writing" to the ref, the return value is the name of the ref
* that will actually be created or changed.
*
* If flag is non-NULL, set the value that it points to the
* If flags is non-NULL, set the value that it points to the
* combination of REF_ISPACKED (if the reference was found among the
* packed references) and REF_ISSYMREF (if the initial reference was a
* symbolic reference).
* packed references), REF_ISSYMREF (if the initial reference was a
* symbolic reference) and REF_ISBROKEN (if the ref is malformed).
*
* If ref is not a properly-formatted, normalized reference, return
* NULL. If more than MAXDEPTH recursive symbolic lookups are needed,
@ -984,8 +984,9 @@ extern int read_ref(const char *refname, unsigned char *sha1);
*
* errno is set to something meaningful on error.
*/
extern const char *resolve_ref_unsafe(const char *ref, unsigned char *sha1, int reading, int *flag);
extern char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, int *flag);
#define RESOLVE_REF_READING 0x01
extern const char *resolve_ref_unsafe(const char *ref, int resolve_flags, unsigned char *sha1, int *flags);
extern char *resolve_refdup(const char *ref, int resolve_flags, unsigned char *sha1, int *flags);

extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);

4
http-backend.c
View File

@ -412,7 +412,9 @@ static int show_head_ref(const char *refname, const unsigned char *sha1,

if (flag & REF_ISSYMREF) {
unsigned char unused[20];
const char *target = resolve_ref_unsafe(refname, unused, 1, NULL);
const char *target = resolve_ref_unsafe(refname,
RESOLVE_REF_READING,
unused, NULL);
const char *target_nons = strip_namespace(target);

strbuf_addf(buf, "ref: %s\n", target_nons);

2
notes-merge.c
View File

@ -549,7 +549,7 @@ int notes_merge(struct notes_merge_options *o,
o->local_ref, o->remote_ref);

/* Dereference o->local_ref into local_sha1 */
if (read_ref_full(o->local_ref, local_sha1, 0, NULL))
if (read_ref_full(o->local_ref, 0, local_sha1, NULL))
die("Failed to resolve local notes ref '%s'", o->local_ref);
else if (!check_refname_format(o->local_ref, 0) &&
is_null_sha1(local_sha1))

5
reflog-walk.c
View File

@ -48,7 +48,8 @@ static struct complete_reflogs *read_complete_reflog(const char *ref)
unsigned char sha1[20];
const char *name;
void *name_to_free;
name = name_to_free = resolve_refdup(ref, sha1, 1, NULL);
name = name_to_free = resolve_refdup(ref, RESOLVE_REF_READING,
sha1, NULL);
if (name) {
for_each_reflog_ent(name, read_one_reflog, reflogs);
free(name_to_free);
@ -174,7 +175,7 @@ int add_reflog_for_walk(struct reflog_walk_info *info,
if (*branch == '\0') {
unsigned char sha1[20];
free(branch);
branch = resolve_refdup("HEAD", sha1, 0, NULL);
branch = resolve_refdup("HEAD", 0, sha1, NULL);
if (!branch)
die ("No current branch");


93
refs.c
View File

@ -1251,7 +1251,9 @@ static void read_loose_refs(const char *dirname, struct ref_dir *dir)
hashclr(sha1);
flag |= REF_ISBROKEN;
}
} else if (read_ref_full(refname.buf, sha1, 1, &flag)) {
} else if (read_ref_full(refname.buf,
RESOLVE_REF_READING,
sha1, &flag)) {
hashclr(sha1);
flag |= REF_ISBROKEN;
}
@ -1376,9 +1378,9 @@ static struct ref_entry *get_packed_ref(const char *refname)
* options are forwarded from resolve_safe_unsafe().
*/
static const char *handle_missing_loose_ref(const char *refname,
int resolve_flags,
unsigned char *sha1,
int reading,
int *flag)
int *flags)
{
struct ref_entry *entry;

@ -1389,12 +1391,12 @@ static const char *handle_missing_loose_ref(const char *refname,
entry = get_packed_ref(refname);
if (entry) {
hashcpy(sha1, entry->u.value.sha1);
if (flag)
*flag |= REF_ISPACKED;
if (flags)
*flags |= REF_ISPACKED;
return refname;
}
/* The reference is not a packed reference, either. */
if (reading) {
if (resolve_flags & RESOLVE_REF_READING) {
return NULL;
} else {
hashclr(sha1);
@ -1403,21 +1405,20 @@ static const char *handle_missing_loose_ref(const char *refname,
}

/* This function needs to return a meaningful errno on failure */
const char *resolve_ref_unsafe(const char *refname, unsigned char *sha1, int reading, int *flag)
const char *resolve_ref_unsafe(const char *refname, int resolve_flags, unsigned char *sha1, int *flags)
{
int depth = MAXDEPTH;
ssize_t len;
char buffer[256];
static char refname_buffer[256];

if (flag)
*flag = 0;
if (flags)
*flags = 0;

if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
errno = EINVAL;
return NULL;
}

for (;;) {
char path[PATH_MAX];
struct stat st;
@ -1443,8 +1444,8 @@ const char *resolve_ref_unsafe(const char *refname, unsigned char *sha1, int rea
stat_ref:
if (lstat(path, &st) < 0) {
if (errno == ENOENT)
return handle_missing_loose_ref(refname, sha1,
reading, flag);
return handle_missing_loose_ref(refname,
resolve_flags, sha1, flags);
else
return NULL;
}
@ -1464,8 +1465,8 @@ const char *resolve_ref_unsafe(const char *refname, unsigned char *sha1, int rea
!check_refname_format(buffer, 0)) {
strcpy(refname_buffer, buffer);
refname = refname_buffer;
if (flag)
*flag |= REF_ISSYMREF;
if (flags)
*flags |= REF_ISSYMREF;
continue;
}
}
@ -1510,21 +1511,21 @@ const char *resolve_ref_unsafe(const char *refname, unsigned char *sha1, int rea
*/
if (get_sha1_hex(buffer, sha1) ||
(buffer[40] != '\0' && !isspace(buffer[40]))) {
if (flag)
*flag |= REF_ISBROKEN;
if (flags)
*flags |= REF_ISBROKEN;
errno = EINVAL;
return NULL;
}
return refname;
}
if (flag)
*flag |= REF_ISSYMREF;
if (flags)
*flags |= REF_ISSYMREF;
buf = buffer + 4;
while (isspace(*buf))
buf++;
if (check_refname_format(buf, REFNAME_ALLOW_ONELEVEL)) {
if (flag)
*flag |= REF_ISBROKEN;
if (flags)
*flags |= REF_ISBROKEN;
errno = EINVAL;
return NULL;
}
@ -1532,9 +1533,9 @@ const char *resolve_ref_unsafe(const char *refname, unsigned char *sha1, int rea
}
}

char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, int *flag)
char *resolve_refdup(const char *ref, int resolve_flags, unsigned char *sha1, int *flags)
{
const char *ret = resolve_ref_unsafe(ref, sha1, reading, flag);
const char *ret = resolve_ref_unsafe(ref, resolve_flags, sha1, flags);
return ret ? xstrdup(ret) : NULL;
}

@ -1545,22 +1546,22 @@ struct ref_filter {
void *cb_data;
};

int read_ref_full(const char *refname, unsigned char *sha1, int reading, int *flags)
int read_ref_full(const char *refname, int resolve_flags, unsigned char *sha1, int *flags)
{
if (resolve_ref_unsafe(refname, sha1, reading, flags))
if (resolve_ref_unsafe(refname, resolve_flags, sha1, flags))
return 0;
return -1;
}

int read_ref(const char *refname, unsigned char *sha1)
{
return read_ref_full(refname, sha1, 1, NULL);
return read_ref_full(refname, RESOLVE_REF_READING, sha1, NULL);
}

int ref_exists(const char *refname)
{
unsigned char sha1[20];
return !!resolve_ref_unsafe(refname, sha1, 1, NULL);
return !!resolve_ref_unsafe(refname, RESOLVE_REF_READING, sha1, NULL);
}

static int filter_refs(const char *refname, const unsigned char *sha1, int flags,
@ -1673,7 +1674,7 @@ int peel_ref(const char *refname, unsigned char *sha1)
return 0;
}

if (read_ref_full(refname, base, 1, &flag))
if (read_ref_full(refname, RESOLVE_REF_READING, base, &flag))
return -1;

/*
@ -1714,7 +1715,7 @@ static int warn_if_dangling_symref(const char *refname, const unsigned char *sha
if (!(flags & REF_ISSYMREF))
return 0;

resolves_to = resolve_ref_unsafe(refname, junk, 0, NULL);
resolves_to = resolve_ref_unsafe(refname, 0, junk, NULL);
if (!resolves_to
|| (d->refname
? strcmp(resolves_to, d->refname)
@ -1839,7 +1840,7 @@ static int do_head_ref(const char *submodule, each_ref_fn fn, void *cb_data)
return 0;
}

if (!read_ref_full("HEAD", sha1, 1, &flag))
if (!read_ref_full("HEAD", RESOLVE_REF_READING, sha1, &flag))
return fn("HEAD", sha1, flag, cb_data);

return 0;
@ -1919,7 +1920,7 @@ int head_ref_namespaced(each_ref_fn fn, void *cb_data)
int flag;

strbuf_addf(&buf, "%sHEAD", get_git_namespace());
if (!read_ref_full(buf.buf, sha1, 1, &flag))
if (!read_ref_full(buf.buf, RESOLVE_REF_READING, sha1, &flag))
ret = fn(buf.buf, sha1, flag, cb_data);
strbuf_release(&buf);

@ -2014,7 +2015,9 @@ int refname_match(const char *abbrev_name, const char *full_name)
static struct ref_lock *verify_lock(struct ref_lock *lock,
const unsigned char *old_sha1, int mustexist)
{
if (read_ref_full(lock->ref_name, lock->old_sha1, mustexist, NULL)) {
if (read_ref_full(lock->ref_name,
mustexist ? RESOLVE_REF_READING : 0,
lock->old_sha1, NULL)) {
int save_errno = errno;
error("Can't verify ref %s", lock->ref_name);
unlock_ref(lock);
@ -2087,7 +2090,8 @@ int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref)

this_result = refs_found ? sha1_from_ref : sha1;
mksnpath(fullref, sizeof(fullref), *p, len, str);
r = resolve_ref_unsafe(fullref, this_result, 1, &flag);
r = resolve_ref_unsafe(fullref, RESOLVE_REF_READING,
this_result, &flag);
if (r) {
if (!refs_found++)
*ref = xstrdup(r);
@ -2116,7 +2120,8 @@ int dwim_log(const char *str, int len, unsigned char *sha1, char **log)
const char *ref, *it;

mksnpath(path, sizeof(path), *p, len, str);
ref = resolve_ref_unsafe(path, hash, 1, NULL);
ref = resolve_ref_unsafe(path, RESOLVE_REF_READING,
hash, NULL);
if (!ref)
continue;
if (reflog_exists(path))
@ -2151,6 +2156,7 @@ static struct ref_lock *lock_ref_sha1_basic(const char *refname,
int last_errno = 0;
int type, lflags;
int mustexist = (old_sha1 && !is_null_sha1(old_sha1));
int resolve_flags = 0;
int missing = 0;
int attempts_remaining = 3;

@ -2162,7 +2168,11 @@ static struct ref_lock *lock_ref_sha1_basic(const char *refname,
lock = xcalloc(1, sizeof(struct ref_lock));
lock->lock_fd = -1;

refname = resolve_ref_unsafe(refname, lock->old_sha1, mustexist, &type);
if (mustexist)
resolve_flags |= RESOLVE_REF_READING;

refname = resolve_ref_unsafe(refname, resolve_flags,
lock->old_sha1, &type);
if (!refname && errno == EISDIR) {
/* we are trying to lock foo but we used to
* have foo/bar which now does not exist;
@ -2175,7 +2185,8 @@ static struct ref_lock *lock_ref_sha1_basic(const char *refname,
error("there are still refs under '%s'", orig_refname);
goto error_return;
}
refname = resolve_ref_unsafe(orig_refname, lock->old_sha1, mustexist, &type);
refname = resolve_ref_unsafe(orig_refname, resolve_flags,
lock->old_sha1, &type);
}
if (type_p)
*type_p = type;
@ -2517,7 +2528,7 @@ static int curate_packed_ref_fn(struct ref_entry *entry, void *cb_data)
unsigned char sha1[20];
int flags;

if (read_ref_full(entry->name, sha1, 0, &flags))
if (read_ref_full(entry->name, 0, sha1, &flags))
/* We should at least have found the packed ref. */
die("Internal error");
if ((flags & REF_ISSYMREF) || !(flags & REF_ISPACKED)) {
@ -2721,7 +2732,8 @@ int rename_ref(const char *oldrefname, const char *newrefname, const char *logms
if (log && S_ISLNK(loginfo.st_mode))
return error("reflog for %s is a symlink", oldrefname);

symref = resolve_ref_unsafe(oldrefname, orig_sha1, 1, &flag);
symref = resolve_ref_unsafe(oldrefname, RESOLVE_REF_READING,
orig_sha1, &flag);
if (flag & REF_ISSYMREF)
return error("refname %s is a symbolic ref, renaming it is not supported",
oldrefname);
@ -2740,7 +2752,7 @@ int rename_ref(const char *oldrefname, const char *newrefname, const char *logms
goto rollback;
}

if (!read_ref_full(newrefname, sha1, 1, NULL) &&
if (!read_ref_full(newrefname, RESOLVE_REF_READING, sha1, NULL) &&
delete_ref(newrefname, sha1, REF_NODEREF)) {
if (errno==EISDIR) {
if (remove_empty_directories(git_path("%s", newrefname))) {
@ -3018,7 +3030,8 @@ static int write_ref_sha1(struct ref_lock *lock,
unsigned char head_sha1[20];
int head_flag;
const char *head_ref;
head_ref = resolve_ref_unsafe("HEAD", head_sha1, 1, &head_flag);
head_ref = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
head_sha1, &head_flag);
if (head_ref && (head_flag & REF_ISSYMREF) &&
!strcmp(head_ref, lock->ref_name))
log_ref_write("HEAD", lock->old_sha1, sha1, logmsg);
@ -3389,7 +3402,7 @@ static int do_for_each_reflog(struct strbuf *name, each_ref_fn fn, void *cb_data
retval = do_for_each_reflog(name, fn, cb_data);
} else {
unsigned char sha1[20];
if (read_ref_full(name->buf, sha1, 0, NULL))
if (read_ref_full(name->buf, 0, sha1, NULL))
retval = error("bad ref for %s", name->buf);
else
retval = fn(name->buf, sha1, 0, cb_data);

11
remote.c
View File

@ -508,7 +508,7 @@ static void read_config(void)
return;
default_remote_name = "origin";
current_branch = NULL;
head_ref = resolve_ref_unsafe("HEAD", sha1, 0, &flag);
head_ref = resolve_ref_unsafe("HEAD", 0, sha1, &flag);
if (head_ref && (flag & REF_ISSYMREF) &&
skip_prefix(head_ref, "refs/heads/", &head_ref)) {
current_branch = make_branch(head_ref, 0);
@ -1138,7 +1138,8 @@ static char *guess_ref(const char *name, struct ref *peer)
struct strbuf buf = STRBUF_INIT;
unsigned char sha1[20];

const char *r = resolve_ref_unsafe(peer->name, sha1, 1, NULL);
const char *r = resolve_ref_unsafe(peer->name, RESOLVE_REF_READING,
sha1, NULL);
if (!r)
return NULL;

@ -1199,7 +1200,9 @@ static int match_explicit(struct ref *src, struct ref *dst,
unsigned char sha1[20];
int flag;

dst_value = resolve_ref_unsafe(matched_src->name, sha1, 1, &flag);
dst_value = resolve_ref_unsafe(matched_src->name,
RESOLVE_REF_READING,
sha1, &flag);
if (!dst_value ||
((flag & REF_ISSYMREF) &&
!starts_with(dst_value, "refs/heads/")))
@ -1673,7 +1676,7 @@ static int ignore_symref_update(const char *refname)
unsigned char sha1[20];
int flag;

if (!resolve_ref_unsafe(refname, sha1, 0, &flag))
if (!resolve_ref_unsafe(refname, 0, sha1, &flag))
return 0; /* non-existing refs are OK */
return (flag & REF_ISSYMREF);
}

4
sequencer.c
View File

@ -331,7 +331,7 @@ static int is_index_unchanged(void)
unsigned char head_sha1[20];
struct commit *head_commit;

if (!resolve_ref_unsafe("HEAD", head_sha1, 1, NULL))
if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, head_sha1, NULL))
return error(_("Could not resolve HEAD commit\n"));

head_commit = lookup_commit(head_sha1);
@ -871,7 +871,7 @@ static int rollback_single_pick(void)
if (!file_exists(git_path("CHERRY_PICK_HEAD")) &&
!file_exists(git_path("REVERT_HEAD")))
return error(_("no cherry-pick or revert in progress"));
if (read_ref_full("HEAD", head_sha1, 0, NULL))
if (read_ref_full("HEAD", 0, head_sha1, NULL))
return error(_("cannot resolve HEAD"));
if (is_null_sha1(head_sha1))
return error(_("cannot abort from a branch yet to be born"));

5
transport-helper.c
View File

@ -897,7 +897,10 @@ static int push_refs_with_export(struct transport *transport,
int flag;

/* Follow symbolic refs (mainly for HEAD). */
name = resolve_ref_unsafe(ref->peer_ref->name, sha1, 1, &flag);
name = resolve_ref_unsafe(
ref->peer_ref->name,
RESOLVE_REF_READING,
sha1, &flag);
if (!name || !(flag & REF_ISSYMREF))
name = ref->peer_ref->name;


5
transport.c
View File

@ -168,7 +168,8 @@ static void set_upstreams(struct transport *transport, struct ref *refs,
/* Follow symbolic refs (mainly for HEAD). */
localname = ref->peer_ref->name;
remotename = ref->name;
tmp = resolve_ref_unsafe(localname, sha, 1, &flag);
tmp = resolve_ref_unsafe(localname, RESOLVE_REF_READING,
sha, &flag);
if (tmp && flag & REF_ISSYMREF &&
starts_with(tmp, "refs/heads/"))
localname = tmp;
@ -743,7 +744,7 @@ void transport_print_push_status(const char *dest, struct ref *refs,
unsigned char head_sha1[20];
char *head;

head = resolve_refdup("HEAD", head_sha1, 1, NULL);
head = resolve_refdup("HEAD", RESOLVE_REF_READING, head_sha1, NULL);

if (verbose) {
for (ref = refs; ref; ref = ref->next)

2
upload-pack.c
View File

@ -744,7 +744,7 @@ static int find_symref(const char *refname, const unsigned char *sha1, int flag,

if ((flag & REF_ISSYMREF) == 0)
return 0;
symref_target = resolve_ref_unsafe(refname, unused, 0, &flag);
symref_target = resolve_ref_unsafe(refname, 0, unused, &flag);
if (!symref_target || (flag & REF_ISSYMREF) == 0)
die("'%s' is a symref but it is not?", refname);
item = string_list_append(cb_data, refname);

2
wt-status.c
View File

@ -128,7 +128,7 @@ void wt_status_prepare(struct wt_status *s)
s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
s->use_color = -1;
s->relative_paths = 1;
s->branch = resolve_refdup("HEAD", sha1, 0, NULL);
s->branch = resolve_refdup("HEAD", 0, sha1, NULL);
s->reference = "HEAD";
s->fp = stdout;
s->index_file = get_index_file();