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Re: [libvirt] [PATCH 3/4] util: extend virExecWithHook()



On Mon, Jan 30, 2012 at 06:10:50PM +0900, Taku Izumi wrote:
> 
> This patch extends virExecWithHook() to receive
> capability information.
> 
> 
> Signed-off-by: Taku Izumi <izumi taku jp fujitsu com>
> Signed-off-by: Shota Hirae <m11g1401 hibikino ne jp>
> ---
>  src/util/command.c |   16 ++++++++++------
>  1 file changed, 10 insertions(+), 6 deletions(-)
> 
> Index: libvirt/src/util/command.c
> ===================================================================
> --- libvirt.orig/src/util/command.c
> +++ libvirt/src/util/command.c
> @@ -393,6 +393,7 @@ prepareStdFd(int fd, int std)
>   * @hook optional virExecHook function to call prior to exec
>   * @data data to pass to the hook function
>   * @pidfile path to use as pidfile for daemonized process (needs DAEMON flag)
> + * @capabilities capabilities to keep
>   */
>  static int
>  virExecWithHook(const char *const*argv,
> @@ -404,7 +405,8 @@ virExecWithHook(const char *const*argv,
>                  unsigned int flags,
>                  virExecHook hook,
>                  void *data,
> -                char *pidfile)
> +                char *pidfile,
> +                unsigned long long capabilities)
>  {
>      pid_t pid;
>      int null = -1, i, openmax;
> @@ -633,9 +635,9 @@ virExecWithHook(const char *const*argv,
>  
>      /* The steps above may need todo something privileged, so
>       * we delay clearing capabilities until the last minute */
> -    if ((flags & VIR_EXEC_CLEAR_CAPS) &&
> -        virClearCapabilities() < 0)
> -        goto fork_error;
> +    if (capabilities || (flags & VIR_EXEC_CLEAR_CAPS))
> +        if (virKeepCapabilities(capabilities) < 0)
> +            goto fork_error;
>  
>      /* Close logging again to ensure no FDs leak to child */
>      virLogReset();
> @@ -723,7 +725,8 @@ virExecWithHook(const char *const*argv A
>                  int flags_unused ATTRIBUTE_UNUSED,
>                  virExecHook hook ATTRIBUTE_UNUSED,
>                  void *data ATTRIBUTE_UNUSED,
> -                char *pidfile ATTRIBUTE_UNUSED)
> +                char *pidfile ATTRIBUTE_UNUSED,
> +                unsigned long long capabilities ATTRIBUTE_UNUSED)
>  {
>      /* XXX: Some day we can implement pieces of virCommand/virExec on
>       * top of _spawn() or CreateProcess(), but we can't implement
> @@ -2171,7 +2174,8 @@ virCommandRunAsync(virCommandPtr cmd, pi
>                            cmd->flags,
>                            virCommandHook,
>                            cmd,
> -                          cmd->pidfile);
> +                          cmd->pidfile,
> +                          cmd->capabilities);
>  
>      VIR_DEBUG("Command result %d, with PID %d",
>                ret, (int)cmd->pid);

ACK

Daniel
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