Fix wrong assertion in libzfs diff error handling

In compare(), all error cases set the error code to EPIPE, so when an
error is set, the correct assertion to make is that the error is EPIPE,
not EINVAL.

Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@freqlabs.com>
Closes #8743

diff --git a/lib/libzfs/libzfs_diff.c b/lib/libzfs/libzfs_diff.c
index 67e85cd204688f8bcc9b0ccdbb2011a85b3c04e1..1b5c44b047e2b154aa54e4cc740ffa6a3f2444ac 100644 (file)
--- a/lib/libzfs/libzfs_diff.c
+++ b/lib/libzfs/libzfs_diff.c
@@ -478,7 +478,7 @@ differ(void *arg)
        if (err)
                return ((void *)-1);
        if (di->zerr) {
-               ASSERT(di->zerr == EINVAL);
+               ASSERT(di->zerr == EPIPE);
                (void) snprintf(di->errbuf, sizeof (di->errbuf),
                    dgettext(TEXT_DOMAIN,
                    "Internal error: bad data from diff IOCTL"));