From: Eugene Syromyatnikov <evgsyr@gmail.com>
Date: Mon, 19 Dec 2016 21:13:27 +0000 (+0300)
Subject: kexec: fix for the x32 ABI
X-Git-Tag: v4.16~325
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=8e4c657a9de3b10204b689adec92c7bd11c98a64;p=strace

kexec: fix for the x32 ABI

There is no compat (and no 32-bit version, ever) for x32 ABI, so
kernel's long type should be used for arguments' values.

The only remaining thing is a pointer to cmdline string, but it is
currently broken on x32 anyway.

* kexec.c (SYS_FUNC(kexec_file_load)): Print the cmdline_len argument
as kernel long, retrieve it via getarg_klu; use printflags64 for
printing the flags argument, retrieve it via getarg_klu.
---

diff --git a/kexec.c b/kexec.c
index bf84db93..d7054993 100644
--- a/kexec.c
+++ b/kexec.c
@@ -112,12 +112,12 @@ SYS_FUNC(kexec_file_load)
 	printfd(tcp, tcp->u_arg[1]);
 	tprints(", ");
 	/* cmdline_len */
-	tprintf("%lu, ", tcp->u_arg[2]);
+	tprintf("%" PRI_klu ", ", getarg_klu(tcp, 2));
 	/* cmdline */
 	printstr(tcp, tcp->u_arg[3], tcp->u_arg[2]);
 	tprints(", ");
 	/* flags */
-	printflags_long(kexec_file_load_flags, tcp->u_arg[4], "KEXEC_FILE_???");
+	printflags64(kexec_file_load_flags, getarg_klu(tcp, 4), "KEXEC_FILE_???");
 
 	return RVAL_DECODED;
 }