I think we should not add configure files to xl. Instead, we may add a global
option to xl command line.
I don't want to see xl going heavy.
Thanks,
Zhigang
On 08/27/2010 07:19 AM, Stefano Stabellini wrote:
> xl: add a global configuration file
>
> Add a global configuration file: /etc/xen/xl.conf; the only option
> currently parsed is autoballoon that is 1 by default.
>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
>
> diff -r 88da46b5c142 tools/examples/Makefile
> --- a/tools/examples/Makefile Wed Aug 25 19:56:47 2010 +0100
> +++ b/tools/examples/Makefile Wed Aug 25 20:05:34 2010 +0100
> @@ -21,6 +21,7 @@ XEN_CONFIGS += xmexample.nbd
> XEN_CONFIGS += xmexample.vti
> XEN_CONFIGS += xend-pci-quirks.sxp
> XEN_CONFIGS += xend-pci-permissive.sxp
> +XEN_CONFIGS += xl.conf
>
> .PHONY: all
> all:
> diff -r 88da46b5c142 tools/examples/xl.conf
> --- /dev/null Thu Jan 01 00:00:00 1970 +0000
> +++ b/tools/examples/xl.conf Wed Aug 25 20:05:34 2010 +0100
> @@ -0,0 +1,5 @@
> +## Global XL config file ##
> +
> +# automatically balloon down dom0 when xen doesn't have enough free
> +# memory to create a domain
> +autoballon=1
> diff -r 88da46b5c142 tools/libxl/xl.c
> --- a/tools/libxl/xl.c Wed Aug 25 19:56:47 2010 +0100
> +++ b/tools/libxl/xl.c Wed Aug 25 20:05:34 2010 +0100
> @@ -29,18 +29,49 @@
>
> #include "libxl.h"
> #include "libxl_utils.h"
> +#include "libxlutil.h"
> #include "xl.h"
>
> xentoollog_logger_stdiostream *logger;
> +int autoballoon = 1;
>
> static xentoollog_level minmsglevel = XTL_PROGRESS;
>
> +static void parse_global_config(const char *configfile,
> + const char *configfile_data,
> + int configfile_len)
> +{
> + long l;
> + XLU_Config *config;
> + int e;
> +
> + config = xlu_cfg_init(stderr, configfile);
> + if (!config) {
> + fprintf(stderr, "Failed to allocate for configuration\n");
> + exit(1);
> + }
> +
> + e = xlu_cfg_readdata(config, configfile_data, configfile_len);
> + if (e) {
> + fprintf(stderr, "Failed to parse config file: %s\n", strerror(e));
> + exit(1);
> + }
> +
> + if (!xlu_cfg_get_long (config, "autoballoon", &l))
> + autoballoon = l;
> +
> + xlu_cfg_destroy(config);
> +}
> +
> int main(int argc, char **argv)
> {
> int opt = 0;
> char *cmd = 0;
> struct cmd_spec *cspec;
> int ret;
> + const char *config_file = "/etc/xen/xl.conf";
> + void *config_data = 0;
> + int config_len = 0;
>
> while ((opt = getopt(argc, argv, "+v")) >= 0) {
> switch (opt) {
> @@ -69,6 +100,14 @@ int main(int argc, char **argv)
> exit(1);
> }
>
> + /* Read global config file options */
> + ret = libxl_read_file_contents(&ctx, config_file,
> + &config_data, &config_len);
> + if (ret)
> + fprintf(stderr, "Failed to read config file: %s: %s\n",
> + config_file, strerror(errno));
> + parse_global_config(config_file, config_data, config_len);
> +
> /* Reset options for per-command use of getopt. */
> argv += optind;
> argc -= optind;
> diff -r 88da46b5c142 tools/libxl/xl.h
> --- a/tools/libxl/xl.h Wed Aug 25 19:56:47 2010 +0100
> +++ b/tools/libxl/xl.h Wed Aug 25 20:05:34 2010 +0100
> @@ -90,4 +90,7 @@ struct cmd_spec *cmdtable_lookup(const c
> extern libxl_ctx ctx;
> extern xentoollog_logger_stdiostream *logger;
>
> +/* global options */
> +extern int autoballoon;
> +
> #endif /* XL_H */
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
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