diff options
Diffstat (limited to 'path.c')
| -rw-r--r-- | path.c | 41 |
1 files changed, 31 insertions, 10 deletions
@@ -394,17 +394,38 @@ int set_shared_perm(const char *path, int mode) const char *make_relative_path(const char *abs, const char *base) { static char buf[PATH_MAX + 1]; - int baselen; - if (!base) - return abs; - baselen = strlen(base); - if (prefixcmp(abs, base)) + int i = 0, j = 0; + + if (!base || !base[0]) return abs; - if (abs[baselen] == '/') - baselen++; - else if (base[baselen - 1] != '/') + while (base[i]) { + if (is_dir_sep(base[i])) { + if (!is_dir_sep(abs[j])) + return abs; + while (is_dir_sep(base[i])) + i++; + while (is_dir_sep(abs[j])) + j++; + continue; + } else if (abs[j] != base[i]) { + return abs; + } + i++; + j++; + } + if ( + /* "/foo" is a prefix of "/foo" */ + abs[j] && + /* "/foo" is not a prefix of "/foobar" */ + !is_dir_sep(base[i-1]) && !is_dir_sep(abs[j]) + ) return abs; - strcpy(buf, abs + baselen); + while (is_dir_sep(abs[j])) + j++; + if (!abs[j]) + strcpy(buf, "."); + else + strcpy(buf, abs + j); return buf; } @@ -589,7 +610,7 @@ int daemon_avoid_alias(const char *p) /* * This resurrects the belts and suspenders paranoia check by HPA * done in <435560F7.4080006@zytor.com> thread, now enter_repo() - * does not do getcwd() based path canonicalizations. + * does not do getcwd() based path canonicalization. * * sl becomes true immediately after seeing '/' and continues to * be true as long as dots continue after that without intervening |