[LU-5954] IOC_MDC_GETFILEINFO returns the wrong ino

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.9.0
• Affects Version/s: Lustre 2.7.0
• Labels: llapi patch
• Severity: 3
• Assignee: WC Triage
• Reporter: John Hammond

Description

If the command is IOC_MDC_GETFILEINFO then ll_dir_ioctl() should be returning the ino derived from the body but is instead returning the ino of the parent.

        skip_lmm:
                if (cmd == IOC_MDC_GETFILEINFO || cmd == LL_IOC_MDC_GETINFO) {
                        struct lov_user_mds_data __user *lmdp;
                        lstat_t st = { 0 };

                        st.st_dev       = inode->i_sb->s_dev;
			st.st_mode      = body->mbo_mode;
                        st.st_nlink     = body->mbo_nlink;
                        st.st_uid       = body->mbo_uid;
                        st.st_gid       = body->mbo_gid;
                        st.st_rdev      = body->mbo_rdev;
                        st.st_size      = body->mbo_size;
                        st.st_blksize   = PAGE_CACHE_SIZE;
                        st.st_blocks    = body->mbo_blocks;
                        st.st_atime     = body->mbo_atime;
                        st.st_mtime     = body->mbo_mtime;
			st.st_ctime     = body->mbo_ctime;
                        st.st_ino       = inode->i_ino;

                        lmdp = (struct lov_user_mds_data __user *)arg;
                        if (copy_to_user(&lmdp->lmd_st, &st, sizeof(st)))
                                GOTO(out_req, rc = -EFAULT);
                }

We should always return the ino derived from the body.