From: George Dunlap <george.dunlap@citrix.com>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>,
Wei Liu <wei.liu2@citrix.com>,
Ross Lagerwall <ross.lagerwall@citrix.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Ian Jackson <ian.jackson@eu.citrix.com>,
mpohlack@amazon.de, xen-devel <xen-devel@lists.xenproject.org>,
sasha.levin@oracle.com
Subject: Re: [PATCH v10 04/24] xen-xsplice: Tool to manipulate xsplice payloads
Date: Sun, 1 May 2016 14:34:18 +0100 [thread overview]
Message-ID: <CAFLBxZb9ivJZ9=sBHm4vijVzX2AaLz6D_yjd6qzcydEDmDK2Tw@mail.gmail.com> (raw)
In-Reply-To: <1461785241-4481-5-git-send-email-konrad.wilk@oracle.com>
On Wed, Apr 27, 2016 at 8:27 PM, Konrad Rzeszutek Wilk
<konrad.wilk@oracle.com> wrote:
> A simple tool that allows an system admin to perform
> basic xsplice operations:
>
> - Upload a xsplice file (with an unique name)
> - List all the xsplice payloads loaded.
> - Apply, revert, replace, or unload the payload using the
> unique name.
> - Do all two - upload, and apply the payload in one go (load).
> Also will use the name of the file as the <name>
>
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
> Acked-by: Wei Liu <wei.liu2@citrix.com>
[snip]
> diff --git a/tools/misc/xen-xsplice.c b/tools/misc/xen-xsplice.c
> new file mode 100644
> index 0000000..0f1ab5a
> --- /dev/null
> +++ b/tools/misc/xen-xsplice.c
> @@ -0,0 +1,463 @@
> +/*
> + * Copyright (c) 2016 Oracle and/or its affiliates. All rights reserved.
> + */
> +
> +#include <fcntl.h>
> +#include <libgen.h>
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <string.h>
> +#include <sys/mman.h>
> +#include <sys/stat.h>
> +#include <unistd.h>
> +#include <xenctrl.h>
> +#include <xenstore.h>
> +
> +static xc_interface *xch;
> +
> +void show_help(void)
> +{
> + fprintf(stderr,
> + "xen-xsplice: Xsplice test tool\n"
> + "Usage: xen-xsplice <command> [args]\n"
> + " <name> An unique name of payload. Up to %d characters.\n"
> + "Commands:\n"
> + " help display this help\n"
> + " upload <name> <file> upload file <file> with <name> name\n"
> + " list list payloads uploaded.\n"
> + " apply <name> apply <name> patch.\n"
> + " revert <name> revert name <name> patch.\n"
> + " replace <name> apply <name> patch and revert all others.\n"
> + " unload <name> unload name <name> patch.\n"
> + " load <file> upload and apply <file>.\n"
> + " name is the <file> name\n",
> + XEN_XSPLICE_NAME_SIZE);
> +}
> +
> +/* wrapper function */
> +static int help_func(int argc, char *argv[])
> +{
> + show_help();
> + return 0;
> +}
> +
> +#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
> +
> +static const char *state2str(unsigned int state)
> +{
> +#define STATE(x) [XSPLICE_STATE_##x] = #x
> + static const char *const names[] = {
> + STATE(CHECKED),
> + STATE(APPLIED),
> + };
> +#undef STATE
> + if (state >= ARRAY_SIZE(names) || !names[state])
> + return "unknown";
> +
> + return names[state];
> +}
> +
> +/* This value was choosen adhoc. It could be 42 too. */
> +#define MAX_LEN 11
> +static int list_func(int argc, char *argv[])
> +{
> + unsigned int idx, done, left, i;
> + xen_xsplice_status_t *info = NULL;
> + char *name = NULL;
> + uint32_t *len = NULL;
> + int rc = ENOMEM;
> +
> + if ( argc )
> + {
> + show_help();
> + return -1;
> + }
> + idx = left = 0;
> + info = malloc(sizeof(*info) * MAX_LEN);
> + if ( !info )
> + return rc;
> + name = malloc(sizeof(*name) * XEN_XSPLICE_NAME_SIZE * MAX_LEN);
> + if ( !name )
> + {
> + free(info);
> + return rc;
> + }
> + len = malloc(sizeof(*len) * MAX_LEN);
> + if ( !len ) {
> + free(name);
> + free(info);
> + return rc;
> + }
> +
> + fprintf(stdout," ID | status\n"
> + "----------------------------------------+------------\n");
> + do {
> + done = 0;
> + /* The memset is done to catch errors. */
> + memset(info, 'A', sizeof(*info) * MAX_LEN);
> + memset(name, 'B', sizeof(*name * MAX_LEN * XEN_XSPLICE_NAME_SIZE));
Did you mean to put the "* MAX_LEN * XEN_XSPLICE_NAME_SIZE" inside the
sizeof()? Coverity thinks it's "suspicious", and I do to. :-)
-George
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next prev parent reply other threads:[~2016-05-01 13:34 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-27 19:26 [PATCH v10] xSplice v1 design and implementation Konrad Rzeszutek Wilk
2016-04-27 19:26 ` [PATCH v10 01/24] xsplice: Design document Konrad Rzeszutek Wilk
2016-04-27 19:26 ` [PATCH v10 02/24] xen/xsplice: Hypervisor implementation of XEN_XSPLICE_op Konrad Rzeszutek Wilk
2016-04-28 11:08 ` Jan Beulich
2016-04-27 19:27 ` [PATCH v10 03/24] libxc: Implementation of XEN_XSPLICE_op in libxc Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 04/24] xen-xsplice: Tool to manipulate xsplice payloads Konrad Rzeszutek Wilk
2016-05-01 13:34 ` George Dunlap [this message]
2016-05-01 18:08 ` Wei Liu
2016-05-02 0:50 ` Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 05/24] arm/x86: Use struct virtual_region to do bug, symbol, and (x86) exception tables lookup Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 06/24] arm/x86/vmap: Add vmalloc_xen and vm_init_type Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 07/24] xsplice: Add helper elf routines Konrad Rzeszutek Wilk
2016-04-28 11:17 ` Jan Beulich
2016-04-27 19:27 ` [PATCH v10 08/24] xsplice: Implement payload loading Konrad Rzeszutek Wilk
2016-04-28 11:21 ` Jan Beulich
2016-04-27 19:27 ` [PATCH v10 09/24] xsplice: Implement support for applying/reverting/replacing patches Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 10/24] x86/xen_hello_world.xsplice: Test payload for patching 'xen_extra_version' Konrad Rzeszutek Wilk
2016-04-28 11:25 ` Jan Beulich
2016-04-27 19:27 ` [PATCH v10 11/24] xsplice, symbols: Implement symbol name resolution on address Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 12/24] xsplice, symbols: Implement fast symbol names -> virtual addresses lookup Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 13/24] x86, xsplice: Print payload's symbol name and payload name in backtraces Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 14/24] xsplice: Add support for bug frames Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 15/24] xsplice: Add support for exception tables Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 16/24] xsplice: Add support for alternatives Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 17/24] build_id: Provide ld-embedded build-ids Konrad Rzeszutek Wilk
2016-04-29 16:38 ` Jan Beulich
2016-04-29 17:23 ` Konrad Rzeszutek Wilk
2016-05-02 6:02 ` Jan Beulich
2016-05-02 11:05 ` Wei Liu
2016-05-02 11:13 ` Jan Beulich
2016-05-02 11:19 ` Wei Liu
2016-05-02 11:26 ` Jan Beulich
2016-04-27 19:27 ` [PATCH v10 18/24] xsplice: Print build_id in keyhandler and on bootup Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 19/24] XENVER_build_id/libxc: Provide ld-embedded build-id Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 20/24] libxl: info: Display build_id of the hypervisor Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 21/24] xsplice: Stacking build-id dependency checking Konrad Rzeszutek Wilk
2016-04-28 11:33 ` Jan Beulich
2016-05-02 6:37 ` Jan Beulich
2016-05-02 13:06 ` Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 22/24] xsplice/xen_replace_world: Test-case for XSPLICE_ACTION_REPLACE Konrad Rzeszutek Wilk
2016-04-28 11:35 ` Jan Beulich
2016-04-27 19:27 ` [PATCH v10 23/24] xsplice: Prevent duplicate payloads from being loaded Konrad Rzeszutek Wilk
2016-04-27 19:27 ` [PATCH v10 24/24] MAINTAINERS/xsplice: Add myself and Ross as the maintainers Konrad Rzeszutek Wilk
2016-04-28 11:47 ` [PATCH v10] xSplice v1 design and implementation Wei Liu
2016-04-28 18:16 ` [PATCH] xsplice: Don't perform multiple operations on same payload once work is scheduled Konrad Rzeszutek Wilk
2016-04-28 20:50 ` Wei Liu
2016-04-28 23:23 ` Andrew Cooper
2016-04-29 1:52 ` Konrad Rzeszutek Wilk
2016-04-29 2:15 ` Konrad Rzeszutek Wilk
2016-04-29 7:35 ` Jan Beulich
2016-04-29 7:49 ` Konrad Rzeszutek Wilk
2016-04-29 8:02 ` Jan Beulich
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