diff options
Diffstat (limited to 'refs.c')
| -rw-r--r-- | refs.c | 57 |
1 files changed, 38 insertions, 19 deletions
@@ -603,15 +603,20 @@ int get_ref_sha1(const char *ref, unsigned char *sha1) static inline int bad_ref_char(int ch) { - return (((unsigned) ch) <= ' ' || - ch == '~' || ch == '^' || ch == ':' || - /* 2.13 Pattern Matching Notation */ - ch == '?' || ch == '*' || ch == '['); + if (((unsigned) ch) <= ' ' || + ch == '~' || ch == '^' || ch == ':') + return 1; + /* 2.13 Pattern Matching Notation */ + if (ch == '?' || ch == '[') /* Unsupported */ + return 1; + if (ch == '*') /* Supported at the end */ + return 2; + return 0; } int check_ref_format(const char *ref) { - int ch, level; + int ch, level, bad_type; const char *cp = ref; level = 0; @@ -622,13 +627,19 @@ int check_ref_format(const char *ref) return -1; /* should not end with slashes */ /* we are at the beginning of the path component */ - if (ch == '.' || bad_ref_char(ch)) + if (ch == '.') return -1; + bad_type = bad_ref_char(ch); + if (bad_type) { + return (bad_type == 2 && !*cp) ? -3 : -1; + } /* scan the rest of the path component */ while ((ch = *cp++) != 0) { - if (bad_ref_char(ch)) - return -1; + bad_type = bad_ref_char(ch); + if (bad_type) { + return (bad_type == 2 && !*cp) ? -3 : -1; + } if (ch == '/') break; if (ch == '.' && *cp == '.') @@ -736,19 +747,20 @@ static int is_refname_available(const char *ref, const char *oldref, return 1; } -static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char *old_sha1, int *flag) +static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char *old_sha1, int flags, int *type_p) { char *ref_file; const char *orig_ref = ref; struct ref_lock *lock; struct stat st; int last_errno = 0; + int type; int mustexist = (old_sha1 && !is_null_sha1(old_sha1)); lock = xcalloc(1, sizeof(struct ref_lock)); lock->lock_fd = -1; - ref = resolve_ref(ref, lock->old_sha1, mustexist, flag); + ref = resolve_ref(ref, lock->old_sha1, mustexist, &type); if (!ref && errno == EISDIR) { /* we are trying to lock foo but we used to * have foo/bar which now does not exist; @@ -761,8 +773,10 @@ static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char error("there are still refs under '%s'", orig_ref); goto error_return; } - ref = resolve_ref(orig_ref, lock->old_sha1, mustexist, flag); + ref = resolve_ref(orig_ref, lock->old_sha1, mustexist, &type); } + if (type_p) + *type_p = type; if (!ref) { last_errno = errno; error("unable to resolve reference %s: %s", @@ -780,10 +794,15 @@ static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char lock->lk = xcalloc(1, sizeof(struct lock_file)); + if (flags & REF_NODEREF) + ref = orig_ref; lock->ref_name = xstrdup(ref); lock->orig_ref_name = xstrdup(orig_ref); ref_file = git_path("%s", ref); - lock->force_write = lstat(ref_file, &st) && errno == ENOENT; + if (lstat(ref_file, &st) && errno == ENOENT) + lock->force_write = 1; + if ((flags & REF_NODEREF) && (type & REF_ISSYMREF)) + lock->force_write = 1; if (safe_create_leading_directories(ref_file)) { last_errno = errno; @@ -806,14 +825,14 @@ struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1) if (check_ref_format(ref)) return NULL; strcpy(refpath, mkpath("refs/%s", ref)); - return lock_ref_sha1_basic(refpath, old_sha1, NULL); + return lock_ref_sha1_basic(refpath, old_sha1, 0, NULL); } -struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1) +struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1, int flags) { if (check_ref_format(ref) == -1) return NULL; - return lock_ref_sha1_basic(ref, old_sha1, NULL); + return lock_ref_sha1_basic(ref, old_sha1, flags, NULL); } static struct lock_file packlock; @@ -858,7 +877,7 @@ int delete_ref(const char *refname, const unsigned char *sha1) struct ref_lock *lock; int err, i, ret = 0, flag = 0; - lock = lock_ref_sha1_basic(refname, sha1, &flag); + lock = lock_ref_sha1_basic(refname, sha1, 0, &flag); if (!lock) return 1; if (!(flag & REF_ISPACKED)) { @@ -909,7 +928,7 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg) if (!is_refname_available(newref, oldref, get_loose_refs(), 0)) return 1; - lock = lock_ref_sha1_basic(renamed_ref, NULL, NULL); + lock = lock_ref_sha1_basic(renamed_ref, NULL, 0, NULL); if (!lock) return error("unable to lock %s", renamed_ref); lock->force_write = 1; @@ -963,7 +982,7 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg) } logmoved = log; - lock = lock_ref_sha1_basic(newref, NULL, NULL); + lock = lock_ref_sha1_basic(newref, NULL, 0, NULL); if (!lock) { error("unable to lock %s for update", newref); goto rollback; @@ -979,7 +998,7 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg) return 0; rollback: - lock = lock_ref_sha1_basic(oldref, NULL, NULL); + lock = lock_ref_sha1_basic(oldref, NULL, 0, NULL); if (!lock) { error("unable to lock %s for rollback", oldref); goto rollbacklog; |