[CRIU] [PATCH v4 criu] zdtm: netns check ipv4 device config preserve while c/r
Andrew Vagin
avagin at odin.com
Wed Apr 8 03:42:39 PDT 2015
On Tue, Apr 07, 2015 at 11:06:14AM +0300, Pavel Tikhomirov wrote:
> check it for default/lo, test values for config options are randomly
> generated and restricted by rand_limit
>
> changes:
> v2: make for all config options, avoid use of "system".
> v3: err->fail, run in own set of namespaces, add random,
> check not all options.
> v4: use all options because test is run in net-namespace,
> use ARRAY_SIZE macro
>
> Signed-off-by: Pavel Tikhomirov <ptikhomirov at parallels.com>
> ---
> test/zdtm.sh | 2 +
> test/zdtm/live/static/Makefile | 1 +
> test/zdtm/live/static/netns-dev.c | 203 ++++++++++++++++++++++++++++++++++++++
> 3 files changed, 206 insertions(+)
> create mode 100644 test/zdtm/live/static/netns-dev.c
>
> diff --git a/test/zdtm.sh b/test/zdtm.sh
> index a1c4ae4..8839880 100755
> --- a/test/zdtm.sh
> +++ b/test/zdtm.sh
> @@ -191,6 +191,7 @@ generate_test_list()
> transition/ipc
> static/netns-nf
> static/netns
> + ns/static/netns-dev
> static/cgroup00
> static/cgroup01
> static/cgroup02
> @@ -324,6 +325,7 @@ mntns_shared_bind
> mntns_shared_bind02
> mntns_root_bind
> mntns_rw_ro_rw
> +netns-dev
> sockets00
> cow01
> "
> diff --git a/test/zdtm/live/static/Makefile b/test/zdtm/live/static/Makefile
> index 976bd0a..6f7e8f9 100644
> --- a/test/zdtm/live/static/Makefile
> +++ b/test/zdtm/live/static/Makefile
> @@ -95,6 +95,7 @@ TST_NOFILE = \
> poll \
> mountpoints \
> netns \
> + netns-dev \
> session01 \
> session02 \
> session03 \
> diff --git a/test/zdtm/live/static/netns-dev.c b/test/zdtm/live/static/netns-dev.c
> new file mode 100644
> index 0000000..3c23abc
> --- /dev/null
> +++ b/test/zdtm/live/static/netns-dev.c
> @@ -0,0 +1,203 @@
> +#include <unistd.h>
> +#include <stdlib.h>
> +#include <dirent.h>
> +
> +#include "zdtmtst.h"
> +
> +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
> +
> +#define LO_CONF_DIR_PATH "/proc/sys/net/ipv4/conf/lo"
> +#define DEF_CONF_DIR_PATH "/proc/sys/net/ipv4/conf/default"
> +
> +char *devconfs[] = {
> + "accept_local",
> + "accept_redirects",
> + "accept_source_route",
> + "arp_accept",
> + "arp_announce",
> + "arp_filter",
> + "arp_ignore",
> + "arp_notify",
> + "bootp_relay",
> + "disable_policy",
> + "disable_xfrm",
> + "force_igmp_version",
> + "forwarding",
> + "igmpv2_unsolicited_report_interval",
> + "igmpv3_unsolicited_report_interval",
> + "log_martians",
> + "mc_forwarding",
> + "medium_id",
> + "promote_secondaries",
> + "proxy_arp",
> + "proxy_arp_pvlan",
> + "route_localnet",
> + "rp_filter",
> + "secure_redirects",
> + "send_redirects",
> + "shared_media",
> + "src_valid_mark",
> + "tag",
> + NULL,
> +};
> +
> +int rand_limit[] = {
> + 2, /* accept_local */
> + 2, /* accept_redirects */
> + 2, /* accept_source_route */
> + 2, /* arp_accept */
> + 3, /* arp_announce */
> + 2, /* arp_filter */
> + 9, /* arp_ignore */
> + 2, /* arp_notify */
> + 2, /* bootp_relay */
> + 2, /* disable_policy */
> + 2, /* disable_xfrm */
> + 0, /* force_igmp_version */
> + 2, /* forwarding */
> + 0, /* igmpv2_unsolicited_report_interval */
> + 0, /* igmpv3_unsolicited_report_interval */
> + 2, /* log_martians */
> + 2, /* mc_forwarding */
> + 0, /* medium_id */
> + 2, /* promote_secondaries */
> + 2, /* proxy_arp */
> + 2, /* proxy_arp_pvlan */
> + 2, /* route_localnet */
> + 3, /* rp_filter */
> + 2, /* secure_redirects */
> + 2, /* send_redirects */
> + 2, /* shared_media */
> + 0, /* src_valid_mark */
> + 0, /* tag */
> +};
> +
> +struct test_conf {
> + int ipv4_conf[ARRAY_SIZE(devconfs)];
> + int ipv4_conf_rand[ARRAY_SIZE(devconfs)];
> + char *dir;
> +} lo, def;
> +
> +static int save_and_set(int opt, FILE *fp, struct test_conf *tc) {
> + int ret;
> + int val;
> +
> + /*
> + * Save
> + */
> + ret = fscanf(fp, "%d", &tc->ipv4_conf[opt]);
> + if (ret < 0) {
> + err("fscanf");
> + return -1;
> + }
> +
> + /*
> + * Set random value
> + */
> + val = (int)lrand48();
> +
> + if (rand_limit[opt] != 0)
> + tc->ipv4_conf_rand[opt] = val % rand_limit[opt];
> + else
> + tc->ipv4_conf_rand[opt] = val;
> +
> + ret = fprintf(fp, "%d", tc->ipv4_conf_rand[opt]);
> + if (ret < 0) {
> + err("fprintf");
> + return -1;
> + }
> +
> + return 0;
> +}
> +
> +static int check_and_restore(int opt, FILE *fp, struct test_conf *tc) {
> + int ret;
> + int val;
> +
> + /*
> + * Check opt
> + */
> + ret = fscanf(fp, "%d", &val);
fscanf can return 0
> + if (ret < 0) {
> + err("fscanf");
> + return -1;
> + }
> +
> + if (val != tc->ipv4_conf_rand[opt]) {
> + fail("Option \"%s/%s\" changed from %d to %d",
> + tc->dir, devconfs[opt], tc->ipv4_conf_rand[opt], val);
> + return -1;
> + }
> +
> + /*
> + * Restore opt
> + */
> + ret = fprintf(fp, "%d", tc->ipv4_conf[opt]);
> + if (ret < 0) {
> + err("fprintf");
> + return -1;
> + }
> +
> + return 0;
> +}
> +
> +static int for_each_option_do(int (*f)(int opt, FILE *fp, struct test_conf *tc), struct test_conf *tc) {
> + int ret;
> + int i;
> +
> + for (i = 0; devconfs[i]; i++) {
> + FILE *fp;
> + char path[PATH_MAX];
> +
> + snprintf(path, sizeof(path), "%s/%s", tc->dir, devconfs[i]);
> + ret = access(path, W_OK);
> + if (ret < 0)
> + continue;
> +
> + fp = fopen(path, "r+");
> + if (fp == NULL) {
> + err("fopen");
> + return -1;
> + }
> +
> + ret = (*f)(i, fp, tc);
> + if (ret < 0)
> + return -1;
> +
> + fclose(fp);
> + }
> +
> + return 0;
> +}
> +
> +int main(int argc, char **argv)
> +{
> + int ret;
> +
> + lo.dir = LO_CONF_DIR_PATH;
> + def.dir = DEF_CONF_DIR_PATH;
> +
> + test_init(argc, argv);
> +
> + ret = for_each_option_do(save_and_set, &lo);
> + if (ret < 0)
> + return -1;
> +
> + ret = for_each_option_do(save_and_set, &def);
> + if (ret < 0)
> + return -1;
> +
> + test_daemon();
> + test_waitsig();
> +
> + ret = for_each_option_do(check_and_restore, &lo);
> + if (ret < 0)
> + return -1;
> +
> + ret = for_each_option_do(check_and_restore, &def);
> + if (ret < 0)
> + return -1;
> +
> + pass();
> + return 0;
> +}
> --
> 1.9.3
>
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