git-fetch: exit with non-zero status when fast-forward check fails

diff --git a/archive-zip.c b/archive-zip.c
index ae5572ae208940637314b80e147dcfb03e76fee3..36e922a1f2ffe34264ac55c002072cb2777e7026 100644 (file)
--- a/archive-zip.c
+++ b/archive-zip.c
@@ -35,6 +35,7 @@ struct zip_local_header {
        unsigned char size[4];
        unsigned char filename_length[2];
        unsigned char extra_length[2];
+       unsigned char _end[1];
 };
 
 struct zip_dir_header {
@@ -55,6 +56,7 @@ struct zip_dir_header {
        unsigned char attr1[2];
        unsigned char attr2[4];
        unsigned char offset[4];
+       unsigned char _end[1];
 };
 
 struct zip_dir_trailer {
@@ -66,8 +68,18 @@ struct zip_dir_trailer {
        unsigned char size[4];
        unsigned char offset[4];
        unsigned char comment_length[2];
+       unsigned char _end[1];
 };
 
+/*
+ * On ARM, padding is added at the end of the struct, so a simple
+ * sizeof(struct ...) reports two bytes more than the payload size
+ * we're interested in.
+ */
+#define ZIP_LOCAL_HEADER_SIZE  offsetof(struct zip_local_header, _end)
+#define ZIP_DIR_HEADER_SIZE    offsetof(struct zip_dir_header, _end)
+#define ZIP_DIR_TRAILER_SIZE   offsetof(struct zip_dir_trailer, _end)
+
 static void copy_le16(unsigned char *dest, unsigned int n)
 {
        dest[0] = 0xff & n;
@@ -211,7 +223,7 @@ static int write_zip_entry(const unsigned char *sha1,
        }
 
        /* make sure we have enough free space in the dictionary */
-       direntsize = sizeof(struct zip_dir_header) + pathlen;
+       direntsize = ZIP_DIR_HEADER_SIZE + pathlen;
        while (zip_dir_size < zip_dir_offset + direntsize) {
                zip_dir_size += ZIP_DIRECTORY_MIN_SIZE;
                zip_dir = xrealloc(zip_dir, zip_dir_size);
@@ -234,8 +246,8 @@ static int write_zip_entry(const unsigned char *sha1,
        copy_le16(dirent.attr1, 0);
        copy_le32(dirent.attr2, attr2);
        copy_le32(dirent.offset, zip_offset);
-       memcpy(zip_dir + zip_dir_offset, &dirent, sizeof(struct zip_dir_header));
-       zip_dir_offset += sizeof(struct zip_dir_header);
+       memcpy(zip_dir + zip_dir_offset, &dirent, ZIP_DIR_HEADER_SIZE);
+       zip_dir_offset += ZIP_DIR_HEADER_SIZE;
        memcpy(zip_dir + zip_dir_offset, path, pathlen);
        zip_dir_offset += pathlen;
        zip_dir_entries++;
@@ -251,8 +263,8 @@ static int write_zip_entry(const unsigned char *sha1,
        copy_le32(header.size, uncompressed_size);
        copy_le16(header.filename_length, pathlen);
        copy_le16(header.extra_length, 0);
-       write_or_die(1, &header, sizeof(struct zip_local_header));
-       zip_offset += sizeof(struct zip_local_header);
+       write_or_die(1, &header, ZIP_LOCAL_HEADER_SIZE);
+       zip_offset += ZIP_LOCAL_HEADER_SIZE;
        write_or_die(1, path, pathlen);
        zip_offset += pathlen;
        if (compressed_size > 0) {
@@ -282,7 +294,7 @@ static void write_zip_trailer(const unsigned char *sha1)
        copy_le16(trailer.comment_length, sha1 ? 40 : 0);
 
        write_or_die(1, zip_dir, zip_dir_offset);
-       write_or_die(1, &trailer, sizeof(struct zip_dir_trailer));
+       write_or_die(1, &trailer, ZIP_DIR_TRAILER_SIZE);
        if (sha1)
                write_or_die(1, sha1_to_hex(sha1), 40);
 }