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test_trim_caps.cc

Zheng Yan, 05/17/2018 08:42 AM

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#define _FILE_OFFSET_BITS 64
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#include <features.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <fcntl.h>
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#include <time.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <assert.h>
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#include <unistd.h>
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#include <cephfs/libcephfs.h>
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int main(int argc, char *argv[]) 
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{
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        char buf;
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        int pipefd[2];
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        pipe(pipefd);
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        pid_t pid = fork();
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        assert(pid >= 0);
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        if (pid == 0)
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                close(pipefd[1]);
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        else
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                close(pipefd[0]);
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        struct ceph_mount_info *cmount = NULL;
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        ceph_create(&cmount, "admin");
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        ceph_conf_read_file(cmount, "/etc/ceph/ceph.conf");
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        int ret = ceph_mount(cmount, NULL);
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        assert(ret >= 0);
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        if (pid == 0) {
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                ret = read(pipefd[0], &buf, 1);
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                assert(ret == 1);
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                ret = ceph_rename(cmount, "1", "3");
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                assert(ret >= 0);
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                ret = ceph_rename(cmount, "2", "1");
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                assert(ret >= 0);
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                ceph_unmount(cmount);
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                printf("child exits\n");
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        } else {
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                ret = ceph_mkdirs(cmount, "1/2", 0755);
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                assert(ret >= 0);
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                struct ceph_statx stx;
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                ret = ceph_statx(cmount, "1", &stx, 0, 0);
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                assert(ret >= 0);
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                uint64_t orig_ino = stx.stx_ino;
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                ret = ceph_mkdir(cmount, "2", 0755);
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                assert(ret >= 0);
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                ret = write(pipefd[1], &buf, 1);
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                assert(ret == 1);
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                int wstatus;
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                ret = waitpid(pid, &wstatus, 0);
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                assert(ret >= 0);
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                assert(wstatus == 0);
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                // make origin '1' no parent dentry
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                ret = ceph_statx(cmount, "1", &stx, 0, 0);
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                assert(ret >= 0);
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                assert(orig_ino != stx.stx_ino);
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                // move root inode's cap_item to tail of session->caps
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                ret = ceph_statx(cmount, ".", &stx, 0, 0);
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                assert(ret >= 0);
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                printf("waiting for crash\n");
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                pause();
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        }
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        return 0;
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}
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