diff options
Diffstat (limited to 'tar-tree.c')
| -rw-r--r-- | tar-tree.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/tar-tree.c b/tar-tree.c index 11bbc81e36..efab2b5420 100644 --- a/tar-tree.c +++ b/tar-tree.c @@ -161,6 +161,16 @@ static unsigned int ustar_header_chksum(const struct ustar_header *header) return chksum; } +static int get_path_prefix(const struct strbuf *path, int maxlen) +{ + int i = path->len; + if (i > maxlen) + i = maxlen; + while (i > 0 && path->buf[i] != '/') + i--; + return i; +} + static void write_entry(const unsigned char *sha1, struct strbuf *path, unsigned int mode, void *buffer, unsigned long size) { @@ -195,9 +205,17 @@ static void write_entry(const unsigned char *sha1, struct strbuf *path, return; } if (path->len > sizeof(header.name)) { - sprintf(header.name, "%s.data", sha1_to_hex(sha1)); - strbuf_append_ext_header(&ext_header, "path", - path->buf, path->len); + int plen = get_path_prefix(path, sizeof(header.prefix)); + int rest = path->len - plen - 1; + if (plen > 0 && rest <= sizeof(header.name)) { + memcpy(header.prefix, path->buf, plen); + memcpy(header.name, path->buf + plen + 1, rest); + } else { + sprintf(header.name, "%s.data", + sha1_to_hex(sha1)); + strbuf_append_ext_header(&ext_header, "path", + path->buf, path->len); + } } else memcpy(header.name, path->buf, path->len); } |