Original bug report:
https://bugzilla.redhat.com/show_bug.cgi?id=1001965
Possible fix in attachment.
Pavel
diff --git a/src/copyout.c b/src/copyout.c
index 72f1989..ee6f24a 100644
--- a/src/copyout.c
+++ b/src/copyout.c
@@ -59,7 +59,7 @@ read_for_checksum (int in_file_des, int file_size, char *file_name)
if (lseek (in_file_des, 0L, SEEK_SET))
error (1, errno, _("cannot read checksum for %s"), file_name);
- return crc;
+ return crc & CHKSUM_MAX;
}
/* Write out NULs to fill out the rest of the current block on
@@ -381,7 +381,7 @@ write_out_new_ascii_header (const char *magic_string,
_("name size")))
return 1;
p += 8;
- to_ascii (p, file_hdr->c_chksum & 0xffffffff, 8, LG_16);
+ to_ascii (p, file_hdr->c_chksum & CHKSUM_MAX, 8, LG_16);
tape_buffered_write (ascii_header, out_des, sizeof ascii_header);
diff --git a/src/extern.h b/src/extern.h
index 4f94d40..b274690 100644
--- a/src/extern.h
+++ b/src/extern.h
@@ -205,6 +205,8 @@ int cpio_create_dir (struct cpio_file_stat *file_hdr, int existing_dir);
#define LG_8 3
#define LG_16 4
+#define CHKSUM_MAX 0xffffffffu
+
uintmax_t from_ascii (char const *where, size_t digs, unsigned logbase);
#define FROM_OCTAL(f) from_ascii (f, sizeof f, LG_8)
diff --git a/src/util.c b/src/util.c
index 00953d5..e307c58 100644
--- a/src/util.c
+++ b/src/util.c
@@ -413,6 +413,8 @@ tape_toss_input (int in_des, off_t num_bytes)
input_size -= space_left;
bytes_left -= space_left;
}
+
+ crc &= CHKSUM_MAX;
}
void
@@ -461,6 +463,8 @@ copy_files_tape_to_disk (int in_des, int out_des, off_t num_bytes)
input_size -= size;
in_buff += size;
}
+
+ crc &= CHKSUM_MAX;
}
/* Copy a file using the input and output buffers, which may start out
partly full. After the copy, the files are not closed nor the last
@@ -514,6 +518,8 @@ copy_files_disk_to_tape (int in_des, int out_des, off_t num_bytes,
input_size -= size;
in_buff += size;
}
+
+ crc &= CHKSUM_MAX;
}
/* Copy a file using the input and output buffers, which may start out
partly full. After the copy, the files are not closed nor the last
@@ -564,6 +570,8 @@ copy_files_disk_to_disk (int in_des, int out_des, off_t num_bytes,
input_size -= size;
in_buff += size;
}
+
+ crc &= CHKSUM_MAX;
}
/* Warn if file changed while it was being copied. */
