init/initramfs.c: provide more details in error messages

Use distinct error messages when archive decompression failed.

Link: http://lkml.kernel.org/r/20190212075635.7373-1-david.engraf@sysgo.com
Signed-off-by: David Engraf <david.engraf@sysgo.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/init/initramfs.c b/init/initramfs.c
index fca8996..4749e11 100644 (file)
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -431,7 +431,7 @@ static long __init flush_buffer(void *bufv, unsigned long len)
                        len -= written;
                        state = Reset;
                } else
-                       error("junk in compressed archive");
+                       error("junk within compressed archive");
        }
        return origLen;
 }
@@ -488,9 +488,9 @@ static char * __init unpack_to_rootfs(char *buf, unsigned long len)
                                message = msg_buf;
                        }
                } else
-                       error("junk in compressed archive");
+                       error("invalid magic at start of compressed archive");
                if (state != Reset)
-                       error("junk in compressed archive");
+                       error("junk at the end of compressed archive");
                this_header = saved_offset + my_inptr;
                buf += my_inptr;
                len -= my_inptr;