mirror of
https://github.com/checkpoint-restore/criu.git
synced 2026-07-30 05:21:57 +00:00
43e5d05134
After a bit more thinking I found a way to fetch arguments from notifications -- pass opaque value into callback and provide a set of calls for exploring one. With this we can a) provide more data if service supplies additional fields in the future b) not check the action name to decide whether or not the requested argument is available Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
93 lines
1.5 KiB
C
93 lines
1.5 KiB
C
#include "criu.h"
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#include <fcntl.h>
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#include <stdio.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <signal.h>
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#include "lib.h"
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#define SUCC_ECODE 42
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static int actions_called = 0;
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static int notify(char *action, criu_notify_arg_t na)
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{
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printf("ACTION: %s\n", action);
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actions_called++;
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return 0;
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}
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int main(int argc, char **argv)
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{
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int pid, ret, fd, p[2];
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printf("--- Start loop ---\n");
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pipe(p);
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pid = fork();
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if (pid < 0) {
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perror("Can't");
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return -1;
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}
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if (!pid) {
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printf(" `- loop: initializing\n");
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if (setsid() < 0)
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exit(1);
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close(0);
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close(1);
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close(2);
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close(p[0]);
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ret = SUCC_ECODE;
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write(p[1], &ret, sizeof(ret));
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close(p[1]);
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while (1)
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sleep(1);
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exit(SUCC_ECODE);
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}
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close(p[1]);
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/* Wait for kid to start */
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ret = -1;
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read(p[0], &ret, sizeof(ret));
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if (ret != SUCC_ECODE) {
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printf("Error starting loop\n");
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goto err;
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}
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/* Wait for pipe to get closed, then dump */
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read(p[0], &ret, 1);
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close(p[0]);
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printf("--- Dump loop ---\n");
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criu_init_opts();
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criu_set_service_address(argv[1]);
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criu_set_pid(pid);
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criu_set_log_file("dump.log");
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criu_set_log_level(4);
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criu_set_notify_cb(notify);
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fd = open(argv[2], O_DIRECTORY);
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criu_set_images_dir_fd(fd);
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ret = criu_dump();
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if (ret < 0) {
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what_err_ret_mean(ret);
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kill(pid, SIGKILL);
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goto err;
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}
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printf(" `- Dump succeeded\n");
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ret = 0;
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err:
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waitpid(pid, NULL, 0);
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if (ret || !actions_called) {
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printf("FAIL (%d/%d)\n", ret, actions_called);
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return 1;
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}
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printf(" `- Success (%d actions)\n", actions_called);
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return 0;
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}
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