nlattr: add unsigned int decoders that print in hex form

[strace] / reboot.c

diff --git a/reboot.c b/reboot.c
index 2d118510df55a319abc7ccbe987e32dd25f9bc36..12de30bc4090a64f323e9c61678fb6d2867ae86c 100644 (file)
--- a/reboot.c
+++ b/reboot.c
@@ -6,17 +6,23 @@
 
 SYS_FUNC(reboot)
 {
-       if (exiting(tcp))
-               return 0;
+       const unsigned int magic1 = tcp->u_arg[0];
+       const unsigned int magic2 = tcp->u_arg[1];
+       const unsigned int cmd = tcp->u_arg[2];
 
-       printflags(bootflags1, tcp->u_arg[0], "LINUX_REBOOT_MAGIC_???");
+       printxval(bootflags1, magic1, "LINUX_REBOOT_MAGIC_???");
        tprints(", ");
-       printflags(bootflags2, tcp->u_arg[1], "LINUX_REBOOT_MAGIC_???");
+       printxval(bootflags2, magic2, "LINUX_REBOOT_MAGIC_???");
        tprints(", ");
-       printflags(bootflags3, tcp->u_arg[2], "LINUX_REBOOT_CMD_???");
-       if (tcp->u_arg[2] == (long) LINUX_REBOOT_CMD_RESTART2) {
+       printxval(bootflags3, cmd, "LINUX_REBOOT_CMD_???");
+       if (cmd == LINUX_REBOOT_CMD_RESTART2) {
                tprints(", ");
-               printstr(tcp, tcp->u_arg[3], -1);
+               /*
+                * The size of kernel buffer is 256 bytes and
+                * the last byte is always zero, at most 255 bytes
+                * are copied from the user space.
+                */
+               printstr_ex(tcp, tcp->u_arg[3], 255, QUOTE_0_TERMINATED);
        }
-       return 0;
+       return RVAL_DECODED;
 }