struct denode * msdosfs_mkdire(const char *path, struct denode *pdep, fsnode *node) { struct denode ndirent; struct denode *dep; struct componentname cn; struct stat *st = &node->inode->st; struct msdosfsmount *pmp = pdep->de_pmp; int error; u_long newcluster, pcl, bn; daddr_t lbn; struct direntry *denp; struct buf *bp; cn.cn_nameptr = node->name; cn.cn_namelen = strlen(node->name); /* * If this is the root directory and there is no space left we * can't do anything. This is because the root directory can not * change size. */ if (pdep->de_StartCluster == MSDOSFSROOT && pdep->de_fndoffset >= pdep->de_FileSize) { error = ENOSPC; goto bad2; } /* * Allocate a cluster to hold the about to be created directory. */ error = clusteralloc(pmp, 0, 1, &newcluster, NULL); if (error) goto bad2; memset(&ndirent, 0, sizeof(ndirent)); ndirent.de_pmp = pmp; ndirent.de_flag = DE_ACCESS | DE_CREATE | DE_UPDATE; msdosfs_times(pmp, &ndirent, st); /* * Now fill the cluster with the "." and ".." entries. And write * the cluster to disk. This way it is there for the parent * directory to be pointing at if there were a crash. */ bn = cntobn(pmp, newcluster); lbn = de_bn2kb(pmp, bn); DPRINTF(("%s(newcluster %lu, bn=%lu, lbn=%lu)\n", __func__, newcluster, bn, lbn)); /* always succeeds */ bp = getblk(pmp->pm_devvp, lbn, pmp->pm_bpcluster, 0, 0); memset(bp->b_data, 0, pmp->pm_bpcluster); memcpy(bp->b_data, &dosdirtemplate, sizeof dosdirtemplate); denp = (struct direntry *)bp->b_data; putushort(denp[0].deStartCluster, newcluster); putushort(denp[0].deCDate, ndirent.de_CDate); putushort(denp[0].deCTime, ndirent.de_CTime); denp[0].deCHundredth = ndirent.de_CHun; putushort(denp[0].deADate, ndirent.de_ADate); putushort(denp[0].deMDate, ndirent.de_MDate); putushort(denp[0].deMTime, ndirent.de_MTime); pcl = pdep->de_StartCluster; DPRINTF(("%s(pcl %lu, rootdirblk=%lu)\n", __func__, pcl, pmp->pm_rootdirblk)); if (FAT32(pmp) && pcl == pmp->pm_rootdirblk) pcl = 0; putushort(denp[1].deStartCluster, pcl); putushort(denp[1].deCDate, ndirent.de_CDate); putushort(denp[1].deCTime, ndirent.de_CTime); denp[1].deCHundredth = ndirent.de_CHun; putushort(denp[1].deADate, ndirent.de_ADate); putushort(denp[1].deMDate, ndirent.de_MDate); putushort(denp[1].deMTime, ndirent.de_MTime); if (FAT32(pmp)) { putushort(denp[0].deHighClust, newcluster >> 16); putushort(denp[1].deHighClust, pdep->de_StartCluster >> 16); } else {
int msdosfs_mkdir(void *v) { struct vop_mkdir_args *ap = v; struct componentname *cnp = ap->a_cnp; struct denode ndirent; struct denode *dep; struct denode *pdep = VTODE(ap->a_dvp); int error; daddr64_t bn; uint32_t newcluster, pcl; struct direntry *denp; struct msdosfsmount *pmp = pdep->de_pmp; struct buf *bp; struct timespec ts; /* * If this is the root directory and there is no space left we * can't do anything. This is because the root directory can not * change size. */ if (pdep->de_StartCluster == MSDOSFSROOT && pdep->de_fndoffset >= pdep->de_FileSize) { error = ENOSPC; goto bad2; } /* * Allocate a cluster to hold the about to be created directory. */ error = clusteralloc(pmp, 0, 1, CLUST_EOFE, &newcluster, NULL); if (error) goto bad2; bzero(&ndirent, sizeof(ndirent)); ndirent.de_pmp = pmp; ndirent.de_flag = DE_ACCESS | DE_CREATE | DE_UPDATE; getnanotime(&ts); DETIMES(&ndirent, &ts, &ts, &ts); /* * Now fill the cluster with the "." and ".." entries. And write * the cluster to disk. This way it is there for the parent * directory to be pointing at if there were a crash. */ bn = cntobn(pmp, newcluster); /* always succeeds */ bp = getblk(pmp->pm_devvp, bn, pmp->pm_bpcluster, 0, 0); bzero(bp->b_data, pmp->pm_bpcluster); bcopy(&dosdirtemplate, bp->b_data, sizeof dosdirtemplate); denp = (struct direntry *)bp->b_data; putushort(denp[0].deStartCluster, newcluster); putushort(denp[0].deCDate, ndirent.de_CDate); putushort(denp[0].deCTime, ndirent.de_CTime); denp[0].deCTimeHundredth = ndirent.de_CTimeHundredth; putushort(denp[0].deADate, ndirent.de_ADate); putushort(denp[0].deMDate, ndirent.de_MDate); putushort(denp[0].deMTime, ndirent.de_MTime); pcl = pdep->de_StartCluster; if (FAT32(pmp) && pcl == pmp->pm_rootdirblk) pcl = 0; putushort(denp[1].deStartCluster, pcl); putushort(denp[1].deCDate, ndirent.de_CDate); putushort(denp[1].deCTime, ndirent.de_CTime); denp[1].deCTimeHundredth = ndirent.de_CTimeHundredth; putushort(denp[1].deADate, ndirent.de_ADate); putushort(denp[1].deMDate, ndirent.de_MDate); putushort(denp[1].deMTime, ndirent.de_MTime); if (FAT32(pmp)) { putushort(denp[0].deHighClust, newcluster >> 16); putushort(denp[1].deHighClust, pdep->de_StartCluster >> 16); } if ((error = bwrite(bp)) != 0) goto bad; /* * Now build up a directory entry pointing to the newly allocated * cluster. This will be written to an empty slot in the parent * directory. */ #ifdef DIAGNOSTIC if ((cnp->cn_flags & HASBUF) == 0) panic("msdosfs_mkdir: no name"); #endif if ((error = uniqdosname(pdep, cnp, ndirent.de_Name)) != 0) goto bad; ndirent.de_Attributes = ATTR_DIRECTORY; ndirent.de_StartCluster = newcluster; ndirent.de_FileSize = 0; ndirent.de_dev = pdep->de_dev; ndirent.de_devvp = pdep->de_devvp; if ((error = createde(&ndirent, pdep, &dep, cnp)) != 0) goto bad; if ((cnp->cn_flags & SAVESTART) == 0) pool_put(&namei_pool, cnp->cn_pnbuf); vput(ap->a_dvp); *ap->a_vpp = DETOV(dep); return (0); bad: clusterfree(pmp, newcluster, NULL); bad2: pool_put(&namei_pool, cnp->cn_pnbuf); vput(ap->a_dvp); return (error); }