/* $OpenBSD: editor.c,v 1.367 2021/03/09 07:03:19 deraadt Exp $ */ /* * Copyright (c) 1997-2000 Todd C. Miller * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include /* MAXBSIZE DEV_BSIZE */ #include #include #include #include #include #include #define DKTYPENAMES #include #include #include #include #include #include #include #include #include #include #include #include #include "extern.h" #include "pathnames.h" #define MAXIMUM(a, b) (((a) > (b)) ? (a) : (b)) /* flags for getuint64() */ #define DO_CONVERSIONS 0x00000001 #define DO_ROUNDING 0x00000002 /* flags for alignpartition() */ #define ROUND_OFFSET_UP 0x00000001 #define ROUND_OFFSET_DOWN 0x00000002 #define ROUND_SIZE_UP 0x00000004 #define ROUND_SIZE_DOWN 0x00000008 #define ROUND_SIZE_OVERLAP 0x00000010 /* Special return values for getnumber and getuint64() */ #define CMD_ABORTED (ULLONG_MAX - 1) #define CMD_BADVALUE (ULLONG_MAX) /* structure to describe a portion of a disk */ struct diskchunk { u_int64_t start; u_int64_t stop; }; /* used when sorting mountpoints in mpsave() */ struct mountinfo { char *mountpoint; int partno; }; /* used when allocating all space according to recommendations */ struct space_allocation { u_int64_t minsz; /* starts as blocks, xlated to sectors. */ u_int64_t maxsz; /* starts as blocks, xlated to sectors. */ int rate; /* % of extra space to use */ char *mp; }; /* * NOTE! Changing partition sizes in the space_allocation tables * requires corresponding updates to the *.ok files in * /usr/src/regress/sbin/disklabel. */ /* entries for swap and var are changed by editor_allocspace() */ struct space_allocation alloc_big[] = { { MEG(150), GIG(1), 5, "/" }, { MEG(80), MEG(256), 10, "swap" }, { MEG(120), GIG(4), 8, "/tmp" }, { MEG(80), GIG(4), 13, "/var" }, { MEG(1500), GIG(6), 10, "/usr" }, { MEG(384), GIG(1), 3, "/usr/X11R6" }, { GIG(1), GIG(20), 15, "/usr/local" }, { MEG(1300), GIG(2), 2, "/usr/src" }, { GIG(5), GIG(6), 4, "/usr/obj" }, { GIG(1), GIG(300), 30, "/home" } /* Anything beyond this leave for the user to decide */ }; struct space_allocation alloc_medium[] = { { MEG(800), GIG(2), 5, "/" }, { MEG(80), MEG(256), 10, "swap" }, { MEG(1300), GIG(3), 78, "/usr" }, { MEG(256), GIG(2), 7, "/home" } }; struct space_allocation alloc_small[] = { { MEG(700), GIG(4), 95, "/" }, { MEG(1), MEG(256), 5, "swap" } }; struct space_allocation alloc_stupid[] = { { MEG(1), MEG(2048), 100, "/" } }; #ifndef nitems #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0])) #endif struct alloc_table { struct space_allocation *table; int sz; }; struct alloc_table alloc_table_default[] = { { alloc_big, nitems(alloc_big) }, { alloc_medium, nitems(alloc_medium) }, { alloc_small, nitems(alloc_small) }, { alloc_stupid, nitems(alloc_stupid) } }; struct alloc_table *alloc_table = alloc_table_default; int alloc_table_nitems = 4; void edit_parms(struct disklabel *); void editor_resize(struct disklabel *, char *); void editor_add(struct disklabel *, char *); void editor_change(struct disklabel *, char *); u_int64_t editor_countfree(struct disklabel *); void editor_delete(struct disklabel *, char *); void editor_help(void); void editor_modify(struct disklabel *, char *); void editor_name(struct disklabel *, char *); char *getstring(const char *, const char *, const char *); u_int64_t getuint64(struct disklabel *, char *, char *, u_int64_t, u_int64_t, int *); u_int64_t getnumber(char *, char *, u_int32_t, u_int32_t); int has_overlap(struct disklabel *); int partition_cmp(const void *, const void *); struct partition **sort_partitions(struct disklabel *); void getdisktype(struct disklabel *, char *, char *); void find_bounds(struct disklabel *); void set_bounds(struct disklabel *); void set_duid(struct disklabel *); struct diskchunk *free_chunks(struct disklabel *); int micmp(const void *, const void *); int mpequal(char **, char **); int get_bsize(struct disklabel *, int); int get_fsize(struct disklabel *, int); int get_cpg(struct disklabel *, int); int get_fstype(struct disklabel *, int); int get_mp(struct disklabel *, int); int get_offset(struct disklabel *, int); int get_size(struct disklabel *, int); void get_geometry(int, struct disklabel **); void set_geometry(struct disklabel *, struct disklabel *, struct disklabel *, char *); void zero_partitions(struct disklabel *); u_int64_t max_partition_size(struct disklabel *, int); void display_edit(struct disklabel *, char); void psize(u_int64_t sz, char unit, struct disklabel *lp); char *get_token(char **); int apply_unit(double, u_char, u_int64_t *); int parse_sizespec(const char *, double *, char **); int parse_sizerange(char *, u_int64_t *, u_int64_t *); int parse_pct(char *, int *); int alignpartition(struct disklabel *, int, u_int64_t, u_int64_t, int); static u_int64_t starting_sector; static u_int64_t ending_sector; static int expert; static int overlap; /* * Simple partition editor. */ int editor(int f) { struct disklabel origlabel, lastlabel, tmplabel, newlab = lab; struct disklabel *disk_geop = NULL; struct partition *pp; FILE *fp; char buf[BUFSIZ], *cmd, *arg; char **omountpoints = NULL; char **origmountpoints = NULL, **tmpmountpoints = NULL; int i, error = 0; /* Alloc and init mount point info */ if (!(omountpoints = calloc(MAXPARTITIONS, sizeof(char *))) || !(origmountpoints = calloc(MAXPARTITIONS, sizeof(char *))) || !(tmpmountpoints = calloc(MAXPARTITIONS, sizeof(char *)))) errx(4, "out of memory"); /* Don't allow disk type of "unknown" */ getdisktype(&newlab, "You need to specify a type for this disk.", specname); /* Get the on-disk geometries if possible */ get_geometry(f, &disk_geop); /* How big is the OpenBSD portion of the disk? */ find_bounds(&newlab); /* Make sure there is no partition overlap. */ if (has_overlap(&newlab)) errx(1, "can't run when there is partition overlap."); /* If we don't have a 'c' partition, create one. */ pp = &newlab.d_partitions[RAW_PART]; if (newlab.d_npartitions < 3 || DL_GETPSIZE(pp) == 0) { puts("No 'c' partition found, adding one that spans the disk."); if (newlab.d_npartitions < 3) newlab.d_npartitions = 3; DL_SETPOFFSET(pp, 0); DL_SETPSIZE(pp, DL_GETDSIZE(&newlab)); pp->p_fstype = FS_UNUSED; pp->p_fragblock = pp->p_cpg = 0; } #ifdef SUN_CYLCHECK if ((newlab.d_flags & D_VENDOR) && !quiet) { puts("This platform requires that partition offsets/sizes " "be on cylinder boundaries.\n" "Partition offsets/sizes will be rounded to the " "nearest cylinder automatically."); } #endif /* Set d_bbsize and d_sbsize as necessary */ if (newlab.d_bbsize == 0) newlab.d_bbsize = BBSIZE; if (newlab.d_sbsize == 0) newlab.d_sbsize = SBSIZE; /* Save the (U|u)ndo labels and mountpoints. */ mpcopy(origmountpoints, mountpoints); origlabel = newlab; lastlabel = newlab; puts("Label editor (enter '?' for help at any prompt)"); for (;;) { fprintf(stdout, "%s%s%c ", dkname, (memcmp(&lab, &newlab, sizeof(newlab)) == 0) ? "" : "*", (expert == 0) ? '>' : '#'); if (fgets(buf, sizeof(buf), stdin) == NULL) { putchar('\n'); buf[0] = 'q'; buf[1] = '\0'; } if ((cmd = strtok(buf, " \t\r\n")) == NULL) continue; arg = strtok(NULL, " \t\r\n"); if ((*cmd != 'u') && (*cmd != 'U')) { /* * Save undo info in case the command tries to make * changes but decides not to. */ tmplabel = lastlabel; lastlabel = newlab; mpcopy(tmpmountpoints, omountpoints); mpcopy(omountpoints, mountpoints); } switch (*cmd) { case '?': case 'h': editor_help(); break; case 'A': if (ioctl(f, DIOCGPDINFO, &newlab) == -1) { warn("DIOCGPDINFO"); newlab = lastlabel; } else { int oquiet = quiet, oexpert = expert; aflag = 1; quiet = expert = 0; editor_allocspace(&newlab); quiet = oquiet; expert = oexpert; } break; case 'a': editor_add(&newlab, arg); break; case 'b': set_bounds(&newlab); break; case 'c': editor_change(&newlab, arg); break; case 'D': if (ioctl(f, DIOCGPDINFO, &newlab) == -1) warn("DIOCGPDINFO"); else { dflag = 1; for (i = 0; i < MAXPARTITIONS; i++) { free(mountpoints[i]); mountpoints[i] = NULL; } } break; case 'd': editor_delete(&newlab, arg); break; case 'e': edit_parms(&newlab); break; case 'g': set_geometry(&newlab, disk_geop, &lab, arg); break; case 'i': set_duid(&newlab); break; case 'm': editor_modify(&newlab, arg); break; case 'n': if (!fstabfile) { fputs("This option is not valid when run " "without the -F or -f flags.\n", stderr); break; } editor_name(&newlab, arg); break; case 'p': display_edit(&newlab, arg ? *arg : 0); break; case 'l': display(stdout, &newlab, arg ? *arg : 0, 0); break; case 'M': { sig_t opipe = signal(SIGPIPE, SIG_IGN); char *pager, *comm = NULL; extern const u_char manpage[]; extern const int manpage_sz; if ((pager = getenv("PAGER")) == NULL || *pager == '\0') pager = _PATH_LESS; if (asprintf(&comm, "gunzip -qc|%s", pager) != -1 && (fp = popen(comm, "w")) != NULL) { (void) fwrite(manpage, manpage_sz, 1, fp); pclose(fp); } else warn("unable to execute %s", pager); free(comm); (void)signal(SIGPIPE, opipe); break; } case 'q': if (donothing) { puts("In no change mode, not writing label."); goto done; } /* * If we haven't changed the original label, and it * wasn't a default label or an auto-allocated label, * there is no need to do anything before exiting. Note * that 'w' will reset dflag and aflag to allow 'q' to * exit without further questions. */ if (!dflag && !aflag && memcmp(&lab, &newlab, sizeof(newlab)) == 0) { puts("No label changes."); /* Save mountpoint info. */ mpsave(&newlab); goto done; } do { arg = getstring("Write new label?", "Write the modified label to disk?", "y"); } while (arg && tolower((unsigned char)*arg) != 'y' && tolower((unsigned char)*arg) != 'n'); if (arg && tolower((unsigned char)*arg) == 'y') { if (writelabel(f, &newlab) == 0) { newlab = lab; /* lab now has UID info */ goto done; } warnx("unable to write label"); } error = 1; goto done; /* NOTREACHED */ break; case 'R': if (aflag && !overlap) editor_resize(&newlab, arg); else fputs("Resize only implemented for auto " "allocated labels\n", stderr); break; case 'r': { struct diskchunk *chunks; int i; /* Display free space. */ chunks = free_chunks(&newlab); for (i = 0; chunks[i].start != 0 || chunks[i].stop != 0; i++) fprintf(stderr, "Free sectors: %16llu - %16llu " "(%16llu)\n", chunks[i].start, chunks[i].stop - 1, chunks[i].stop - chunks[i].start); fprintf(stderr, "Total free sectors: %llu.\n", editor_countfree(&newlab)); break; } case 's': if (arg == NULL) { arg = getstring("Filename", "Name of the file to save label into.", NULL); if (arg == NULL || *arg == '\0') break; } if ((fp = fopen(arg, "w")) == NULL) { warn("cannot open %s", arg); } else { display(fp, &newlab, 0, 1); (void)fclose(fp); } break; case 'U': /* * If we allow 'U' repeatedly, information would be * lost. This way multiple 'U's followed by 'u' will * undo the 'U's. */ if (memcmp(&newlab, &origlabel, sizeof(newlab)) || !mpequal(mountpoints, origmountpoints)) { tmplabel = newlab; newlab = origlabel; lastlabel = tmplabel; mpcopy(tmpmountpoints, mountpoints); mpcopy(mountpoints, origmountpoints); mpcopy(omountpoints, tmpmountpoints); } puts("Original label and mount points restored."); break; case 'u': tmplabel = newlab; newlab = lastlabel; lastlabel = tmplabel; mpcopy(tmpmountpoints, mountpoints); mpcopy(mountpoints, omountpoints); mpcopy(omountpoints, tmpmountpoints); puts("Last change undone."); break; case 'w': if (donothing) { puts("In no change mode, not writing label."); break; } /* Write label to disk. */ if (writelabel(f, &newlab) != 0) warnx("unable to write label"); else { dflag = aflag = 0; newlab = lab; /* lab now has UID info */ } break; case 'X': expert = !expert; printf("%s expert mode\n", expert ? "Entering" : "Exiting"); break; case 'x': goto done; break; case 'z': zero_partitions(&newlab); break; case '\n': break; default: printf("Unknown option: %c ('?' for help)\n", *cmd); break; } /* * If no changes were made to label or mountpoints, then * restore undo info. */ if (memcmp(&newlab, &lastlabel, sizeof(newlab)) == 0 && (mpequal(mountpoints, omountpoints))) { lastlabel = tmplabel; mpcopy(omountpoints, tmpmountpoints); } } done: mpfree(omountpoints); mpfree(origmountpoints); mpfree(tmpmountpoints); free(disk_geop); return (error); } /* * Allocate all disk space according to standard recommendations for a * root disk. */ int editor_allocspace(struct disklabel *lp_org) { struct disklabel *lp, label; struct space_allocation *alloc; struct space_allocation *ap; struct partition *pp; struct diskchunk *chunks; u_int64_t chunkstart, chunkstop, chunksize; u_int64_t cylsecs, secs, xtrasecs; char **partmp; int i, j, lastalloc, index, partno, freeparts; extern int64_t physmem; /* How big is the OpenBSD portion of the disk? */ find_bounds(lp_org); overlap = 0; freeparts = 0; for (i = 0; i < MAXPARTITIONS; i++) { u_int64_t psz, pstart, pend; pp = &lp_org->d_partitions[i]; psz = DL_GETPSIZE(pp); if (psz == 0) freeparts++; pstart = DL_GETPOFFSET(pp); pend = pstart + psz; if (i != RAW_PART && psz != 0 && ((pstart >= starting_sector && pstart <= ending_sector) || (pend > starting_sector && pend < ending_sector))) { overlap = 1; break; } } cylsecs = lp_org->d_secpercyl; alloc = NULL; index = -1; again: free(alloc); alloc = NULL; index++; if (index >= alloc_table_nitems) return 1; lp = &label; for (i=0; id_npartitions = MAXPARTITIONS; lastalloc = alloc_table[index].sz; if (lastalloc > freeparts) goto again; alloc = reallocarray(NULL, lastalloc, sizeof(struct space_allocation)); if (alloc == NULL) errx(4, "out of memory"); memcpy(alloc, alloc_table[index].table, lastalloc * sizeof(struct space_allocation)); /* bump max swap based on phys mem, little physmem gets 2x swap */ if (index == 0 && alloc_table == alloc_table_default) { if (physmem && physmem / DEV_BSIZE < MEG(256)) alloc[1].minsz = alloc[1].maxsz = 2 * (physmem / DEV_BSIZE); else alloc[1].maxsz += (physmem / DEV_BSIZE); /* bump max /var to make room for 2 crash dumps */ alloc[3].maxsz += 2 * (physmem / DEV_BSIZE); } xtrasecs = editor_countfree(lp); for (i = 0; i < lastalloc; i++) { alloc[i].minsz = DL_BLKTOSEC(lp, alloc[i].minsz); alloc[i].maxsz = DL_BLKTOSEC(lp, alloc[i].maxsz); if (xtrasecs >= alloc[i].minsz) xtrasecs -= alloc[i].minsz; else { /* It did not work out, try next strategy */ goto again; } } for (i = 0; i < lastalloc; i++) { /* Find next available partition. */ for (j = 0; j < MAXPARTITIONS; j++) if (DL_GETPSIZE(&lp->d_partitions[j]) == 0) break; if (j == MAXPARTITIONS) { /* It did not work out, try next strategy */ goto again; } partno = j; pp = &lp->d_partitions[j]; partmp = &mountpoints[j]; ap = &alloc[i]; /* Find largest chunk of free space. */ chunks = free_chunks(lp); chunksize = 0; for (j = 0; chunks[j].start != 0 || chunks[j].stop != 0; j++) { if ((chunks[j].stop - chunks[j].start) > chunksize) { chunkstart = chunks[j].start; chunkstop = chunks[j].stop; #ifdef SUN_CYLCHECK if (lp->d_flags & D_VENDOR) { /* Align to cylinder boundaries. */ chunkstart = ((chunkstart + cylsecs - 1) / cylsecs) * cylsecs; chunkstop = (chunkstop / cylsecs) * cylsecs; } #endif chunksize = chunkstop - chunkstart; } } /* Figure out the size of the partition. */ if (i == lastalloc - 1) { if (chunksize > ap->maxsz) secs = ap->maxsz; else secs = chunksize; } else { secs = ap->minsz; if (xtrasecs > 0) secs += (xtrasecs / 100) * ap->rate; if (secs > ap->maxsz) secs = ap->maxsz; } #ifdef SUN_CYLCHECK if (lp->d_flags & D_VENDOR) { secs = ((secs + cylsecs - 1) / cylsecs) * cylsecs; while (secs > chunksize) secs -= cylsecs; } #endif /* See if partition can fit into chunk. */ if (secs > chunksize) secs = chunksize; if (secs < ap->minsz) { /* It did not work out, try next strategy */ goto again; } /* Everything seems ok so configure the partition. */ DL_SETPSIZE(pp, secs); DL_SETPOFFSET(pp, chunkstart); if (ap->mp[0] != '/') pp->p_fstype = FS_SWAP; else { pp->p_fstype = FS_BSDFFS; pp->p_fragblock = 0; if (get_fsize(lp, partno) == 1 || get_bsize(lp, partno) == 1 || get_cpg(lp, partno) == 1) { free(alloc); return 1; } free(*partmp); if ((*partmp = strdup(ap->mp)) == NULL) errx(4, "out of memory"); } } free(alloc); memcpy(lp_org, lp, sizeof(struct disklabel)); return 0; } /* * Resize a partition, moving all subsequent partitions */ void editor_resize(struct disklabel *lp, char *p) { struct disklabel label; struct partition *pp, *prev; u_int64_t ui, sz, off; int partno, i, flags, shrunk; label = *lp; /* Change which partition? */ if (p == NULL) p = getstring("partition to resize", "The letter of the partition to name, a - p.", NULL); if (p == NULL) return; partno = p[0] - 'a'; if (partno < 0 || partno == RAW_PART || partno >= lp->d_npartitions) { fprintf(stderr, "Partition must be between 'a' and '%c' " "(excluding 'c').\n", 'a' + lp->d_npartitions - 1); return; } pp = &label.d_partitions[partno]; sz = DL_GETPSIZE(pp); if (sz == 0) { fputs("No such partition\n", stderr); return; } if (pp->p_fstype != FS_BSDFFS && pp->p_fstype != FS_SWAP) { fputs("Cannot resize spoofed partition\n", stderr); return; } flags = DO_CONVERSIONS; ui = getuint64(lp, "[+|-]new size (with unit)", "new size or amount to grow (+) or shrink (-) partition including " "unit", sz, sz + editor_countfree(lp), &flags); if (ui == CMD_ABORTED) return; else if (ui == CMD_BADVALUE) return; else if (ui == 0) { fputs("The size must be > 0 sectors\n", stderr); return; } #ifdef SUN_CYLCHECK if (lp->d_secpercyl & D_VENDOR) { u_int64_t cylsecs; cylsecs = lp->d_secpercyl; ui = ((ui + cylsecs - 1) / cylsecs) * cylsecs; } #endif if (DL_GETPOFFSET(pp) + ui > ending_sector) { fputs("Amount too big\n", stderr); return; } DL_SETPSIZE(pp, ui); pp->p_fragblock = 0; if (get_fsize(&label, partno) == 1 || get_bsize(&label, partno) == 1 || get_cpg(&label, partno) == 1) return; /* * Pack partitions above the resized partition, leaving unused * partitions alone. */ shrunk = -1; prev = pp; for (i = partno + 1; i < MAXPARTITIONS; i++) { if (i == RAW_PART) continue; pp = &label.d_partitions[i]; if (pp->p_fstype != FS_BSDFFS && pp->p_fstype != FS_SWAP) continue; sz = DL_GETPSIZE(pp); if (sz == 0) continue; off = DL_GETPOFFSET(prev) + DL_GETPSIZE(prev); if (off < ending_sector) { DL_SETPOFFSET(pp, off); if (off + DL_GETPSIZE(pp) > ending_sector) { DL_SETPSIZE(pp, ending_sector - off); pp->p_fragblock = DISKLABELV1_FFS_FRAGBLOCK(0, 0); if (get_fsize(&label, i) == 1 || get_bsize(&label, i) == 1 || get_cpg(&label, i) == 1) return; shrunk = i; } } else { fputs("Amount too big\n", stderr); return; } prev = pp; } if (shrunk != -1) fprintf(stderr, "Partition %c shrunk to %llu sectors to make " "room\n", 'a' + shrunk, DL_GETPSIZE(&label.d_partitions[shrunk])); *lp = label; } /* * Add a new partition. */ void editor_add(struct disklabel *lp, char *p) { struct partition *pp; struct diskchunk *chunks; char buf[2]; int i, partno; u_int64_t freesectors, new_offset, new_size; freesectors = editor_countfree(lp); /* XXX - prompt user to steal space from another partition instead */ #ifdef SUN_CYLCHECK if ((lp->d_flags & D_VENDOR) && freesectors < lp->d_secpercyl) { fputs("No space left, you need to shrink a partition " "(need at least one full cylinder)\n", stderr); return; } #endif if (freesectors == 0) { fputs("No space left, you need to shrink a partition\n", stderr); return; } if (p == NULL) { /* * Use the first unused partition that is not 'c' as the * default partition in the prompt string. */ pp = &lp->d_partitions[0]; buf[0] = buf[1] = '\0'; for (partno = 0; partno < MAXPARTITIONS; partno++, pp++) { if (DL_GETPSIZE(pp) == 0 && partno != RAW_PART) { buf[0] = partno + 'a'; p = &buf[0]; break; } } p = getstring("partition", "The letter of the new partition, a - p.", p); } if (p == NULL) return; partno = p[0] - 'a'; if (partno < 0 || partno == RAW_PART || partno >= MAXPARTITIONS) { fprintf(stderr, "Partition must be between 'a' and '%c' " "(excluding 'c').\n", 'a' + MAXPARTITIONS - 1); return; } pp = &lp->d_partitions[partno]; if (pp->p_fstype != FS_UNUSED && DL_GETPSIZE(pp) != 0) { fprintf(stderr, "Partition '%c' exists. Delete it first.\n", p[0]); return; } /* * Increase d_npartitions if necessary. Ensure all new partitions are * zero'ed to avoid inadvertent overlaps. */ for(; lp->d_npartitions <= partno; lp->d_npartitions++) memset(&lp->d_partitions[lp->d_npartitions], 0, sizeof(*pp)); /* Make sure selected partition is zero'd too. */ memset(pp, 0, sizeof(*pp)); chunks = free_chunks(lp); /* * Since we know there's free space, there must be at least one * chunk. So find the largest chunk and assume we want to add the * partition in that free space. */ new_size = new_offset = 0; for (i = 0; chunks[i].start != 0 || chunks[i].stop != 0; i++) { if (chunks[i].stop - chunks[i].start > new_size) { new_size = chunks[i].stop - chunks[i].start; new_offset = chunks[i].start; } } DL_SETPSIZE(pp, new_size); DL_SETPOFFSET(pp, new_offset); pp->p_fstype = partno == 1 ? FS_SWAP : FS_BSDFFS; if (get_offset(lp, partno) == 0 && get_size(lp, partno) == 0 && get_fstype(lp, partno) == 0 && get_mp(lp, partno) == 0 && get_fsize(lp, partno) == 0 && get_bsize(lp, partno) == 0 && get_cpg(lp, partno) == 0) return; /* Bailed out at some point, so effectively delete the partition. */ memset(pp, 0, sizeof(*pp)); } /* * Set the mountpoint of an existing partition ('name'). */ void editor_name(struct disklabel *lp, char *p) { struct partition *pp; int partno; /* Change which partition? */ if (p == NULL) p = getstring("partition to name", "The letter of the partition to name, a - p.", NULL); if (p == NULL) return; partno = p[0] - 'a'; if (partno < 0 || partno == RAW_PART || partno >= lp->d_npartitions) { fprintf(stderr, "Partition must be between 'a' and '%c' " "(excluding 'c').\n", 'a' + lp->d_npartitions - 1); return; } pp = &lp->d_partitions[partno]; if (pp->p_fstype == FS_UNUSED && DL_GETPSIZE(pp) == 0) { fprintf(stderr, "Partition '%c' is not in use.\n", p[0]); return; } get_mp(lp, partno); } /* * Change an existing partition. */ void editor_modify(struct disklabel *lp, char *p) { struct partition opp, *pp; int partno; /* Change which partition? */ if (p == NULL) p = getstring("partition to modify", "The letter of the partition to modify, a - p.", NULL); if (p == NULL) return; partno = p[0] - 'a'; if (partno < 0 || partno == RAW_PART || partno >= lp->d_npartitions) { fprintf(stderr, "Partition must be between 'a' and '%c' " "(excluding 'c').\n", 'a' + lp->d_npartitions - 1); return; } pp = &lp->d_partitions[partno]; if (pp->p_fstype == FS_UNUSED && DL_GETPSIZE(pp) == 0) { fprintf(stderr, "Partition '%c' is not in use.\n", p[0]); return; } opp = *pp; if (get_offset(lp, partno) == 0 && get_size(lp, partno) == 0 && get_fstype(lp, partno) == 0 && get_mp(lp, partno) == 0 && get_fsize(lp, partno) == 0 && get_bsize(lp, partno) == 0 && get_cpg(lp, partno) == 0) return; /* Bailed out at some point, so undo any changes. */ *pp = opp; } /* * Delete an existing partition. */ void editor_delete(struct disklabel *lp, char *p) { struct partition *pp; int partno; if (p == NULL) p = getstring("partition to delete", "The letter of the partition to delete, a - p, or '*'.", NULL); if (p == NULL) return; if (p[0] == '*') { zero_partitions(lp); return; } partno = p[0] - 'a'; if (partno < 0 || partno == RAW_PART || partno >= lp->d_npartitions) { fprintf(stderr, "Partition must be between 'a' and '%c' " "(excluding 'c').\n", 'a' + lp->d_npartitions - 1); return; } pp = &lp->d_partitions[partno]; if (pp->p_fstype == FS_UNUSED && DL_GETPSIZE(pp) == 0) { fprintf(stderr, "Partition '%c' is not in use.\n", p[0]); return; } /* Really delete it (as opposed to just setting to "unused") */ memset(pp, 0, sizeof(*pp)); free(mountpoints[partno]); mountpoints[partno] = NULL; } /* * Change the size of an existing partition. */ void editor_change(struct disklabel *lp, char *p) { struct partition *pp; int partno; if (p == NULL) p = getstring("partition to change size", "The letter of the partition to change size, a - p.", NULL); if (p == NULL) return; partno = p[0] - 'a'; if (partno < 0 || partno == RAW_PART || partno >= lp->d_npartitions) { fprintf(stderr, "Partition must be between 'a' and '%c' " "(excluding 'c').\n", 'a' + lp->d_npartitions - 1); return; } pp = &lp->d_partitions[partno]; if (DL_GETPSIZE(pp) == 0) { fprintf(stderr, "Partition '%c' is not in use.\n", p[0]); return; } printf("Partition %c is currently %llu sectors in size, and can have " "a maximum\nsize of %llu sectors.\n", p[0], DL_GETPSIZE(pp), max_partition_size(lp, partno)); /* Get new size */ get_size(lp, partno); } /* * Sort the partitions based on starting offset. * This assumes there can be no overlap. */ int partition_cmp(const void *e1, const void *e2) { struct partition *p1 = *(struct partition **)e1; struct partition *p2 = *(struct partition **)e2; u_int64_t o1 = DL_GETPOFFSET(p1); u_int64_t o2 = DL_GETPOFFSET(p2); if (o1 < o2) return -1; else if (o1 > o2) return 1; else return 0; } char * getstring(const char *prompt, const char *helpstring, const char *oval) { static char buf[BUFSIZ]; int n; buf[0] = '\0'; do { printf("%s: [%s] ", prompt, oval ? oval : ""); if (fgets(buf, sizeof(buf), stdin) == NULL) { buf[0] = '\0'; if (feof(stdin)) { clearerr(stdin); putchar('\n'); fputs("Command aborted\n", stderr); return (NULL); } } n = strlen(buf); if (n > 0 && buf[n-1] == '\n') buf[--n] = '\0'; if (buf[0] == '?') puts(helpstring); else if (oval != NULL && buf[0] == '\0') strlcpy(buf, oval, sizeof(buf)); } while (buf[0] == '?'); return (&buf[0]); } /* * Returns * 0 .. CMD_ABORTED - 1 ==> valid value * CMD_BADVALUE ==> invalid value * CMD_ABORTED ==> ^D on input */ u_int64_t getnumber(char *prompt, char *helpstring, u_int32_t oval, u_int32_t maxval) { char buf[BUFSIZ], *p; int rslt; long long rval; const char *errstr; rslt = snprintf(buf, sizeof(buf), "%u", oval); if (rslt < 0 || (unsigned int)rslt >= sizeof(buf)) return (CMD_BADVALUE); p = getstring(prompt, helpstring, buf); if (p == NULL) return (CMD_ABORTED); if (strlen(p) == 0) return (oval); rval = strtonum(p, 0, maxval, &errstr); if (errstr != NULL) { printf("%s must be between 0 and %u\n", prompt, maxval); return (CMD_BADVALUE); } return (rval); } /* * Returns * 0 .. CMD_ABORTED - 1 ==> valid value * CMD_BADVALUE ==> invalid value * CMD_ABORTED ==> ^D on input */ u_int64_t getuint64(struct disklabel *lp, char *prompt, char *helpstring, u_int64_t oval, u_int64_t maxval, int *flags) { char buf[21], *p, operator = '\0'; char *unit = NULL; u_int64_t rval = oval; double d; int rslt; rslt = snprintf(buf, sizeof(buf), "%llu", oval); if (rslt < 0 || (unsigned int)rslt >= sizeof(buf)) goto invalid; p = getstring(prompt, helpstring, buf); if (p == NULL) return (CMD_ABORTED); else if (p[0] == '\0') rval = oval; else if (p[0] == '*' && p[1] == '\0') rval = maxval; else { if (*p == '+' || *p == '-') operator = *p++; if (parse_sizespec(p, &d, &unit) == -1) goto invalid; if (unit == NULL) rval = d; else if (flags != NULL && (*flags & DO_CONVERSIONS) == 0) goto invalid; else { switch (tolower((unsigned char)*unit)) { case 'b': rval = d / lp->d_secsize; break; case 'c': rval = d * lp->d_secpercyl; break; case '%': rval = DL_GETDSIZE(lp) * (d / 100.0); break; case '&': rval = maxval * (d / 100.0); break; default: if (apply_unit(d, *unit, &rval) == -1) goto invalid; rval = DL_BLKTOSEC(lp, rval); break; } } /* Range check then apply [+-] operator */ if (operator == '+') { if (CMD_ABORTED - oval > rval) rval += oval; else { goto invalid; } } else if (operator == '-') { if (oval >= rval) rval = oval - rval; else { goto invalid; } } } if (flags != NULL) { if (unit != NULL) *flags |= DO_ROUNDING; #ifdef SUN_CYLCHECK if (lp->d_flags & D_VENDOR) *flags |= DO_ROUNDING; #endif } return (rval); invalid: fputs("Invalid entry\n", stderr); return (CMD_BADVALUE); } /* * Check for partition overlap in lp and prompt the user to resolve the overlap * if any is found. Returns 1 if unable to resolve, else 0. */ int has_overlap(struct disklabel *lp) { struct partition **spp; int i, p1, p2; char *line = NULL; size_t linesize = 0; ssize_t linelen; for (;;) { spp = sort_partitions(lp); for (i = 0; spp[i+1] != NULL; i++) { if (DL_GETPOFFSET(spp[i]) + DL_GETPSIZE(spp[i]) > DL_GETPOFFSET(spp[i+1])) break; } if (spp[i+1] == NULL) { free(line); return (0); } p1 = 'a' + (spp[i] - lp->d_partitions); p2 = 'a' + (spp[i+1] - lp->d_partitions); printf("\nError, partitions %c and %c overlap:\n", p1, p2); printf("# %16.16s %16.16s fstype [fsize bsize cpg]\n", "size", "offset"); display_partition(stdout, lp, p1 - 'a', 0); display_partition(stdout, lp, p2 - 'a', 0); for (;;) { printf("Disable which one? (%c %c) ", p1, p2); linelen = getline(&line, &linesize, stdin); if (linelen == -1) goto done; if (linelen == 2 && (line[0] == p1 || line[0] == p2)) break; } lp->d_partitions[line[0] - 'a'].p_fstype = FS_UNUSED; } done: putchar('\n'); free(line); return (1); } void edit_parms(struct disklabel *lp) { char *p; u_int64_t freesectors, ui; struct disklabel oldlabel = *lp; printf("Changing device parameters for %s:\n", specname); /* disk type */ for (;;) { p = getstring("disk type", "What kind of disk is this? Usually SCSI, ESDI, ST506, or " "floppy (use ESDI for IDE).", dktypenames[lp->d_type]); if (p == NULL) return; if (strcasecmp(p, "IDE") == 0) ui = DTYPE_ESDI; else for (ui = 1; ui < DKMAXTYPES && strcasecmp(p, dktypenames[ui]); ui++) ; if (ui < DKMAXTYPES) { break; } else { printf("\"%s\" is not a valid disk type.\n", p); fputs("Valid types are: ", stdout); for (ui = 1; ui < DKMAXTYPES; ui++) { printf("\"%s\"", dktypenames[ui]); if (ui < DKMAXTYPES - 1) fputs(", ", stdout); } putchar('\n'); } } lp->d_type = ui; /* pack/label id */ p = getstring("label name", "15 char string that describes this label, usually the disk name.", lp->d_packname); if (p == NULL) { *lp = oldlabel; /* undo damage */ return; } strncpy(lp->d_packname, p, sizeof(lp->d_packname)); /* checked */ /* sectors/track */ for (;;) { ui = getnumber("sectors/track", "The Number of sectors per track.", lp->d_nsectors, UINT32_MAX); if (ui == CMD_ABORTED) { *lp = oldlabel; /* undo damage */ return; } else if (ui == CMD_BADVALUE) ; /* Try again. */ else break; } lp->d_nsectors = ui; /* tracks/cylinder */ for (;;) { ui = getnumber("tracks/cylinder", "The number of tracks per cylinder.", lp->d_ntracks, UINT32_MAX); if (ui == CMD_ABORTED) { *lp = oldlabel; /* undo damage */ return; } else if (ui == CMD_BADVALUE) ; /* Try again. */ else break; } lp->d_ntracks = ui; /* sectors/cylinder */ for (;;) { ui = getnumber("sectors/cylinder", "The number of sectors per cylinder (Usually sectors/track " "* tracks/cylinder).", lp->d_secpercyl, UINT32_MAX); if (ui == CMD_ABORTED) { *lp = oldlabel; /* undo damage */ return; } else if (ui == CMD_BADVALUE) ; /* Try again. */ else break; } lp->d_secpercyl = ui; /* number of cylinders */ for (;;) { ui = getnumber("number of cylinders", "The total number of cylinders on the disk.", lp->d_ncylinders, UINT32_MAX); if (ui == CMD_ABORTED) { *lp = oldlabel; /* undo damage */ return; } else if (ui == CMD_BADVALUE) ; /* Try again. */ else break; } lp->d_ncylinders = ui; /* total sectors */ for (;;) { u_int64_t nsec = MAXIMUM(DL_GETDSIZE(lp), (u_int64_t)lp->d_ncylinders * lp->d_secpercyl); ui = getuint64(lp, "total sectors", "The total number of sectors on the disk.", nsec, nsec, NULL); if (ui == CMD_ABORTED) { *lp = oldlabel; /* undo damage */ return; } else if (ui == CMD_BADVALUE) ; /* Try again. */ else if (ui > DL_GETDSIZE(lp) && ending_sector == DL_GETDSIZE(lp)) { puts("You may want to increase the size of the 'c' " "partition."); break; } else if (ui < DL_GETDSIZE(lp) && ending_sector == DL_GETDSIZE(lp)) { /* shrink free count */ freesectors = editor_countfree(lp); if (DL_GETDSIZE(lp) - ui > freesectors) fprintf(stderr, "Not enough free space to shrink by %llu " "sectors (only %llu sectors left)\n", DL_GETDSIZE(lp) - ui, freesectors); else break; } else break; } /* Adjust ending_sector if necessary. */ if (ending_sector > ui) { ending_sector = ui; DL_SETBEND(lp, ending_sector); } DL_SETDSIZE(lp, ui); } struct partition ** sort_partitions(struct disklabel *lp) { static struct partition *spp[MAXPARTITIONS+2]; int i, npartitions; memset(spp, 0, sizeof(spp)); for (npartitions = 0, i = 0; i < lp->d_npartitions; i++) { if (lp->d_partitions[i].p_fstype != FS_UNUSED && DL_GETPSIZE(&lp->d_partitions[i]) != 0) spp[npartitions++] = &lp->d_partitions[i]; } /* * Sort the partitions based on starting offset. * This is safe because we guarantee no overlap. */ if (npartitions > 1) if (mergesort((void *)spp, npartitions, sizeof(spp[0]), partition_cmp)) err(4, "failed to sort partition table"); return (spp); } /* * Get a valid disk type if necessary. */ void getdisktype(struct disklabel *lp, char *banner, char *dev) { int i; char *s; const char *def = "SCSI"; const struct dtypes { const char *dev; const char *type; } dtypes[] = { { "sd", "SCSI" }, { "wd", "IDE" }, { "fd", "FLOPPY" }, { "xd", "SMD" }, { "xy", "SMD" }, { "hd", "HP-IB" }, { "vnd", "VND" }, { "svnd", "VND" }, { NULL, NULL } }; if ((s = basename(dev)) != NULL) { if (*s == 'r') s++; i = strcspn(s, "0123456789"); s[i] = '\0'; dev = s; for (i = 0; dtypes[i].dev != NULL; i++) { if (strcmp(dev, dtypes[i].dev) == 0) { def = dtypes[i].type; break; } } } if (lp->d_type > DKMAXTYPES || lp->d_type == 0) { puts(banner); puts("Possible values are:"); printf("\"IDE\", "); for (i = 1; i < DKMAXTYPES; i++) { printf("\"%s\"", dktypenames[i]); if (i < DKMAXTYPES - 1) fputs(", ", stdout); } putchar('\n'); for (;;) { s = getstring("Disk type", "What kind of disk is this? Usually SCSI, IDE, " "ESDI, ST506, or floppy.", def); if (s == NULL) continue; if (strcasecmp(s, "IDE") == 0) { lp->d_type = DTYPE_ESDI; return; } for (i = 1; i < DKMAXTYPES; i++) if (strcasecmp(s, dktypenames[i]) == 0) { lp->d_type = i; return; } printf("\"%s\" is not a valid disk type.\n", s); fputs("Valid types are: ", stdout); for (i = 1; i < DKMAXTYPES; i++) { printf("\"%s\"", dktypenames[i]); if (i < DKMAXTYPES - 1) fputs(", ", stdout); } putchar('\n'); } } } /* * Get beginning and ending sectors of the OpenBSD portion of the disk * from the user. */ void set_bounds(struct disklabel *lp) { u_int64_t ui, start_temp; /* Starting sector */ for (;;) { ui = getuint64(lp, "Starting sector", "The start of the OpenBSD portion of the disk.", starting_sector, DL_GETDSIZE(lp), NULL); if (ui == CMD_ABORTED) return; else if (ui == CMD_BADVALUE) ; /* Try again. */ else if (ui >= DL_GETDSIZE(lp)) fprintf(stderr, "starting sector must be < %llu\n", DL_GETDSIZE(lp)); else break; } start_temp = ui; /* Size */ for (;;) { ui = getuint64(lp, "Size ('*' for entire disk)", "The size of the OpenBSD portion of the disk ('*' for the " "entire disk).", ending_sector - starting_sector, DL_GETDSIZE(lp) - start_temp, NULL); if (ui == CMD_ABORTED) return; else if (ui == CMD_BADVALUE) ; /* Try again. */ else if (ui > DL_GETDSIZE(lp) - start_temp) fprintf(stderr, "size must be <= %llu\n", DL_GETDSIZE(lp) - start_temp); else break; } ending_sector = start_temp + ui; DL_SETBEND(lp, ending_sector); starting_sector = start_temp; DL_SETBSTART(lp, starting_sector); } /* * Allow user to interactively change disklabel UID. */ void set_duid(struct disklabel *lp) { char *s; int i; printf("The disklabel UID is currently: " "%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx\n", lp->d_uid[0], lp->d_uid[1], lp->d_uid[2], lp->d_uid[3], lp->d_uid[4], lp->d_uid[5], lp->d_uid[6], lp->d_uid[7]); do { s = getstring("duid", "The disklabel UID, given as a 16 " "character hexadecimal string.", NULL); if (s == NULL || strlen(s) == 0) { fputs("Command aborted\n", stderr); return; } i = duid_parse(lp, s); if (i != 0) fputs("Invalid UID entered.\n", stderr); } while (i != 0); } /* * Return a list of the "chunks" of free space available */ struct diskchunk * free_chunks(struct disklabel *lp) { struct partition **spp; static struct diskchunk chunks[MAXPARTITIONS + 2]; u_int64_t start, stop; int i, numchunks; /* Sort the in-use partitions based on offset */ spp = sort_partitions(lp); /* If there are no partitions, it's all free. */ if (spp[0] == NULL) { chunks[0].start = starting_sector; chunks[0].stop = ending_sector; chunks[1].start = chunks[1].stop = 0; return (chunks); } /* Find chunks of free space */ numchunks = 0; if (DL_GETPOFFSET(spp[0]) > starting_sector) { chunks[0].start = starting_sector; chunks[0].stop = DL_GETPOFFSET(spp[0]); numchunks++; } for (i = 0; spp[i] != NULL; i++) { start = DL_GETPOFFSET(spp[i]) + DL_GETPSIZE(spp[i]); if (start < starting_sector) start = starting_sector; else if (start > ending_sector) start = ending_sector; if (spp[i + 1] != NULL) stop = DL_GETPOFFSET(spp[i+1]); else stop = ending_sector; if (stop < starting_sector) stop = starting_sector; else if (stop > ending_sector) stop = ending_sector; if (start < stop) { chunks[numchunks].start = start; chunks[numchunks].stop = stop; numchunks++; } } /* Terminate and return */ chunks[numchunks].start = chunks[numchunks].stop = 0; return (chunks); } void find_bounds(struct disklabel *lp) { starting_sector = DL_GETBSTART(lp); ending_sector = DL_GETBEND(lp); if (ending_sector) { if (verbose) printf("Treating sectors %llu-%llu as the OpenBSD" " portion of the disk.\nYou can use the 'b'" " command to change this.\n\n", starting_sector, ending_sector); } } /* * Calculate free space. */ u_int64_t editor_countfree(struct disklabel *lp) { struct diskchunk *chunks; u_int64_t freesectors = 0; int i; chunks = free_chunks(lp); for (i = 0; chunks[i].start != 0 || chunks[i].stop != 0; i++) freesectors += chunks[i].stop - chunks[i].start; return (freesectors); } void editor_help(void) { puts("Available commands:"); puts( " ? | h - show help n [part] - set mount point\n" " A - auto partition all space p [unit] - print partitions\n" " a [part] - add partition q - quit & save changes\n" " b - set OpenBSD boundaries R [part] - resize auto allocated partition\n" " c [part] - change partition size r - display free space\n" " D - reset label to default s [path] - save label to file\n" " d [part] - delete partition U - undo all changes\n" " e - edit drive parameters u - undo last change\n" " g [d|u] - [d]isk or [u]ser geometry w - write label to disk\n" " i - modify disklabel UID X - toggle expert mode\n" " l [unit] - print disk label header x - exit & lose changes\n" " M - disklabel(8) man page z - delete all partitions\n" " m [part] - modify partition\n" "\n" "Suffixes can be used to indicate units other than sectors:\n" " 'b' (bytes), 'k' (kilobytes), 'm' (megabytes), 'g' (gigabytes) 't' (terabytes)\n" " 'c' (cylinders), '%' (% of total disk), '&' (% of free space).\n" "Values in non-sector units are truncated to the nearest cylinder boundary."); } void mpcopy(char **to, char **from) { int i; for (i = 0; i < MAXPARTITIONS; i++) { free(to[i]); to[i] = NULL; if (from[i] != NULL) { to[i] = strdup(from[i]); if (to[i] == NULL) errx(4, "out of memory"); } } } int mpequal(char **mp1, char **mp2) { int i; for (i = 0; i < MAXPARTITIONS; i++) { if (mp1[i] == NULL && mp2[i] == NULL) continue; if ((mp1[i] != NULL && mp2[i] == NULL) || (mp1[i] == NULL && mp2[i] != NULL) || (strcmp(mp1[i], mp2[i]) != 0)) return (0); } return (1); } void mpsave(struct disklabel *lp) { int i, j; char bdev[PATH_MAX], *p; struct mountinfo mi[MAXPARTITIONS]; FILE *fp; u_int8_t fstype; if (!fstabfile) return; memset(&mi, 0, sizeof(mi)); for (i = 0; i < MAXPARTITIONS; i++) { fstype = lp->d_partitions[i].p_fstype; if (mountpoints[i] != NULL || fstype == FS_SWAP) { mi[i].mountpoint = mountpoints[i]; mi[i].partno = i; } } /* Convert specname to bdev */ if (uidflag) { snprintf(bdev, sizeof(bdev), "%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx.%c", lab.d_uid[0], lab.d_uid[1], lab.d_uid[2], lab.d_uid[3], lab.d_uid[4], lab.d_uid[5], lab.d_uid[6], lab.d_uid[7], specname[strlen(specname)-1]); } else if (strncmp(_PATH_DEV, specname, sizeof(_PATH_DEV) - 1) == 0 && specname[sizeof(_PATH_DEV) - 1] == 'r') { snprintf(bdev, sizeof(bdev), "%s%s", _PATH_DEV, &specname[sizeof(_PATH_DEV)]); } else { if ((p = strrchr(specname, '/')) == NULL || *(++p) != 'r') return; *p = '\0'; snprintf(bdev, sizeof(bdev), "%s%s", specname, p + 1); *p = 'r'; } bdev[strlen(bdev) - 1] = '\0'; /* Sort mountpoints so we don't try to mount /usr/local before /usr */ qsort((void *)mi, MAXPARTITIONS, sizeof(struct mountinfo), micmp); if ((fp = fopen(fstabfile, "w"))) { for (i = 0; i < MAXPARTITIONS; i++) { j = mi[i].partno; fstype = lp->d_partitions[j].p_fstype; if (fstype == FS_SWAP) { fprintf(fp, "%s%c none swap sw\n", bdev, 'a'+j); } else if (mi[i].mountpoint) { fprintf(fp, "%s%c %s %s rw 1 %d\n", bdev, 'a' + j, mi[i].mountpoint, fstypesnames[fstype], j == 0 ? 1 : 2); } } fclose(fp); } } void mpfree(char **mp) { int part; if (mp == NULL) return; for (part = 0; part < MAXPARTITIONS; part++) free(mp[part]); free(mp); } int get_offset(struct disklabel *lp, int partno) { struct partition opp, *pp = &lp->d_partitions[partno]; u_int64_t ui, offsetalign; int flags; flags = DO_CONVERSIONS; ui = getuint64(lp, "offset", "Starting sector for this partition.", DL_GETPOFFSET(pp), DL_GETPOFFSET(pp), &flags); if (ui == CMD_ABORTED || ui == CMD_BADVALUE) return (1); #ifdef SUN_AAT0 if (partno == 0 && ui != 0) { fprintf(stderr, "This architecture requires that " "partition 'a' start at sector 0.\n"); return (1); } #endif opp = *pp; DL_SETPOFFSET(pp, ui); offsetalign = 1; if ((flags & DO_ROUNDING) != 0 && pp->p_fstype == FS_BSDFFS) offsetalign = lp->d_secpercyl; if (alignpartition(lp, partno, offsetalign, 1, ROUND_OFFSET_UP) == 1) { *pp = opp; return (1); } if (expert == 1 && quiet == 0 && ui != DL_GETPOFFSET(pp)) printf("offset rounded to sector %llu\n", DL_GETPOFFSET(pp)); return (0); } int get_size(struct disklabel *lp, int partno) { struct partition opp, *pp = &lp->d_partitions[partno]; u_int64_t maxsize, ui, sizealign; int flags; maxsize = max_partition_size(lp, partno); flags = DO_CONVERSIONS; ui = getuint64(lp, "size", "Size of the partition. " "You may also say +/- amount for a relative change.", DL_GETPSIZE(pp), maxsize, &flags); if (ui == CMD_ABORTED || ui == CMD_BADVALUE) return (1); opp = *pp; DL_SETPSIZE(pp, ui); sizealign = 1; if ((flags & DO_ROUNDING) != 0 && (pp->p_fstype == FS_SWAP || pp->p_fstype == FS_BSDFFS)) sizealign = lp->d_secpercyl; if (alignpartition(lp, partno, 1, sizealign, ROUND_SIZE_UP) == 1) { *pp = opp; return (1); } if (expert == 1 && quiet == 0 && ui != DL_GETPSIZE(pp)) printf("size rounded to %llu sectors\n", DL_GETPSIZE(pp)); return (0); } int get_cpg(struct disklabel *lp, int partno) { u_int64_t ui; struct partition *pp = &lp->d_partitions[partno]; if (pp->p_fstype != FS_BSDFFS) return (0); if (pp->p_cpg == 0) pp->p_cpg = 1; if (expert == 0) return (0); for (;;) { ui = getnumber("cpg", "Size of partition in fs blocks.", pp->p_cpg, USHRT_MAX); if (ui == CMD_ABORTED) return (1); else if (ui == CMD_BADVALUE) ; /* Try again. */ else break; } pp->p_cpg = ui; return (0); } int get_fsize(struct disklabel *lp, int partno) { struct partition *pp = &lp->d_partitions[partno]; u_int64_t ui, bytes; u_int32_t frag, fsize; if (pp->p_fstype != FS_BSDFFS) return (0); fsize = DISKLABELV1_FFS_FSIZE(pp->p_fragblock); frag = DISKLABELV1_FFS_FRAG(pp->p_fragblock); if (fsize == 0) { fsize = 2048; frag = 8; bytes = DL_GETPSIZE(pp) * lp->d_secsize; if (bytes > 128ULL * 1024 * 1024 * 1024) fsize *= 2; if (bytes > 512ULL * 1024 * 1024 * 1024) fsize *= 2; if (fsize < lp->d_secsize) fsize = lp->d_secsize; if (fsize > MAXBSIZE / frag) fsize = MAXBSIZE / frag; pp->p_fragblock = DISKLABELV1_FFS_FRAGBLOCK(fsize, frag); } if (expert == 0) return (0); for (;;) { ui = getnumber("fragment size", "Size of ffs block fragments. A multiple of the disk " "sector-size.", fsize, UINT32_MAX); if (ui == CMD_ABORTED) return (1); else if (ui == CMD_BADVALUE) ; /* Try again. */ else if (ui < lp->d_secsize || (ui % lp->d_secsize) != 0) fprintf(stderr, "Error: fragment size must be a " "multiple of the disk sector size (%d)\n", lp->d_secsize); else break; } if (ui == 0) puts("Zero fragment size implies zero block size"); pp->p_fragblock = DISKLABELV1_FFS_FRAGBLOCK(ui, frag); return (0); } int get_bsize(struct disklabel *lp, int partno) { u_int64_t ui, frag, fsize; struct partition opp, *pp = &lp->d_partitions[partno]; u_int64_t offsetalign, sizealign; char *p; if (pp->p_fstype != FS_BSDFFS) return (0); /* Avoid dividing by zero... */ if (pp->p_fragblock == 0) return (1); opp = *pp; if (expert == 0) goto align; fsize = DISKLABELV1_FFS_FSIZE(pp->p_fragblock); frag = DISKLABELV1_FFS_FRAG(pp->p_fragblock); for (;;) { ui = getnumber("block size", "Size of ffs blocks. 1, 2, 4 or 8 times ffs fragment size.", fsize * frag, UINT32_MAX); /* sanity checks */ if (ui == CMD_ABORTED) return (1); else if (ui == CMD_BADVALUE) ; /* Try again. */ else if (ui < getpagesize()) fprintf(stderr, "Error: block size must be at least as big " "as page size (%d).\n", getpagesize()); else if (ui < fsize || (fsize != ui && fsize * 2 != ui && fsize * 4 != ui && fsize * 8 != ui)) fprintf(stderr, "Error: block size must be 1, 2, 4 or " "8 times fragment size (%llu).\n", (unsigned long long) fsize); else break; } frag = ui / fsize; pp->p_fragblock = DISKLABELV1_FFS_FRAGBLOCK(fsize, frag); #ifdef SUN_CYLCHECK return (0); #endif p = getstring("Align partition to block size", "Round the partition offset and size to multiples of bsize?", "y"); if (*p == 'n' || *p == 'N') return (0); align: #ifdef SUN_CYLCHECK return (0); #endif sizealign = (DISKLABELV1_FFS_FRAG(pp->p_fragblock) * DISKLABELV1_FFS_FSIZE(pp->p_fragblock)) / lp->d_secsize; offsetalign = 1; if (DL_GETPOFFSET(pp) != starting_sector) offsetalign = sizealign; if (alignpartition(lp, partno, offsetalign, sizealign, ROUND_OFFSET_UP | ROUND_SIZE_DOWN | ROUND_SIZE_OVERLAP) == 1) { *pp = opp; return (1); } if (expert == 1 && quiet == 0 && DL_GETPOFFSET(&opp) != DL_GETPOFFSET(pp)) printf("offset rounded to sector %llu\n", DL_GETPOFFSET(pp)); if (expert == 1 && quiet == 0 && DL_GETPSIZE(&opp) != DL_GETPSIZE(pp)) printf("size rounded to %llu sectors\n", DL_GETPSIZE(pp)); return (0); } int get_fstype(struct disklabel *lp, int partno) { char *p; u_int64_t ui; struct partition *pp = &lp->d_partitions[partno]; if (pp->p_fstype < FSMAXTYPES) { p = getstring("FS type", "Filesystem type (usually 4.2BSD or swap)", fstypenames[pp->p_fstype]); if (p == NULL) { return (1); } for (ui = 0; ui < FSMAXTYPES; ui++) { if (!strcasecmp(p, fstypenames[ui])) { pp->p_fstype = ui; break; } } if (ui >= FSMAXTYPES) { printf("Unrecognized filesystem type '%s', treating " "as 'unknown'\n", p); pp->p_fstype = FS_OTHER; } } else { for (;;) { ui = getnumber("FS type (decimal)", "Filesystem type as a decimal number; usually 7 " "(4.2BSD) or 1 (swap).", pp->p_fstype, UINT8_MAX); if (ui == CMD_ABORTED) return (1); else if (ui == CMD_BADVALUE) ; /* Try again. */ else break; } pp->p_fstype = ui; } return (0); } int get_mp(struct disklabel *lp, int partno) { struct partition *pp = &lp->d_partitions[partno]; char *p; int i; if (fstabfile == NULL || pp->p_fstype == FS_UNUSED || pp->p_fstype == FS_SWAP || pp->p_fstype == FS_BOOT || pp->p_fstype == FS_OTHER || pp->p_fstype == FS_RAID) { /* No fstabfile, no names. Not all fstypes can be named */ return 0; } for (;;) { p = getstring("mount point", "Where to mount this filesystem (ie: / /var /usr)", mountpoints[partno] ? mountpoints[partno] : "none"); if (p == NULL) return (1); if (strcasecmp(p, "none") == 0) { free(mountpoints[partno]); mountpoints[partno] = NULL; break; } for (i = 0; i < MAXPARTITIONS; i++) if (mountpoints[i] != NULL && i != partno && strcmp(p, mountpoints[i]) == 0) break; if (i < MAXPARTITIONS) { fprintf(stderr, "'%c' already being mounted at " "'%s'\n", 'a'+i, p); break; } if (*p == '/') { /* XXX - might as well realloc */ free(mountpoints[partno]); if ((mountpoints[partno] = strdup(p)) == NULL) errx(4, "out of memory"); break; } fputs("Mount points must start with '/'\n", stderr); } return (0); } int micmp(const void *a1, const void *a2) { struct mountinfo *mi1 = (struct mountinfo *)a1; struct mountinfo *mi2 = (struct mountinfo *)a2; /* We want all the NULLs at the end... */ if (mi1->mountpoint == NULL && mi2->mountpoint == NULL) return (0); else if (mi1->mountpoint == NULL) return (1); else if (mi2->mountpoint == NULL) return (-1); else return (strcmp(mi1->mountpoint, mi2->mountpoint)); } void get_geometry(int f, struct disklabel **dgpp) { struct stat st; struct disklabel *disk_geop; if (fstat(f, &st) == -1) err(4, "Can't stat device"); /* Get disk geometry */ if ((disk_geop = calloc(1, sizeof(struct disklabel))) == NULL) errx(4, "out of memory"); if (ioctl(f, DIOCGPDINFO, disk_geop) == -1) err(4, "DIOCGPDINFO"); *dgpp = disk_geop; } void set_geometry(struct disklabel *lp, struct disklabel *dgp, struct disklabel *ugp, char *p) { if (p == NULL) p = getstring("[d]isk or [u]ser geometry", "Enter 'd' to use the geometry based on what the disk " "itself thinks it is, or 'u' to use the geometry that " "was found in the label.", "d"); if (p == NULL) return; switch (*p) { case 'd': case 'D': if (dgp == NULL) fputs("BIOS geometry not defined.\n", stderr); else { lp->d_secsize = dgp->d_secsize; lp->d_nsectors = dgp->d_nsectors; lp->d_ntracks = dgp->d_ntracks; lp->d_ncylinders = dgp->d_ncylinders; lp->d_secpercyl = dgp->d_secpercyl; DL_SETDSIZE(lp, DL_GETDSIZE(dgp)); } break; case 'u': case 'U': if (ugp == NULL) fputs("BIOS geometry not defined.\n", stderr); else { lp->d_secsize = ugp->d_secsize; lp->d_nsectors = ugp->d_nsectors; lp->d_ntracks = ugp->d_ntracks; lp->d_ncylinders = ugp->d_ncylinders; lp->d_secpercyl = ugp->d_secpercyl; DL_SETDSIZE(lp, DL_GETDSIZE(ugp)); if (dgp != NULL && ugp->d_secsize == dgp->d_secsize && ugp->d_nsectors == dgp->d_nsectors && ugp->d_ntracks == dgp->d_ntracks && ugp->d_ncylinders == dgp->d_ncylinders && ugp->d_secpercyl == dgp->d_secpercyl && DL_GETDSIZE(ugp) == DL_GETDSIZE(dgp)) fputs("Note: user geometry is the same as disk " "geometry.\n", stderr); } break; default: fputs("You must enter either 'd' or 'u'.\n", stderr); break; } } void zero_partitions(struct disklabel *lp) { int i; for (i = 0; i < MAXPARTITIONS; i++) { memset(&lp->d_partitions[i], 0, sizeof(struct partition)); free(mountpoints[i]); mountpoints[i] = NULL; } DL_SETPSIZE(&lp->d_partitions[RAW_PART], DL_GETDSIZE(lp)); } u_int64_t max_partition_size(struct disklabel *lp, int partno) { struct partition *pp = &lp->d_partitions[partno]; struct diskchunk *chunks; u_int64_t maxsize = 0, offset; int fstype, i; fstype = pp->p_fstype; pp->p_fstype = FS_UNUSED; chunks = free_chunks(lp); pp->p_fstype = fstype; offset = DL_GETPOFFSET(pp); for (i = 0; chunks[i].start != 0 || chunks[i].stop != 0; i++) { if (offset < chunks[i].start || offset >= chunks[i].stop) continue; maxsize = chunks[i].stop - offset; break; } return (maxsize); } void psize(u_int64_t sz, char unit, struct disklabel *lp) { double d = scale(sz, unit, lp); if (d < 0) printf("%llu", sz); else printf("%.*f%c", unit == 'B' ? 0 : 1, d, unit); } void display_edit(struct disklabel *lp, char unit) { u_int64_t fr; int i; fr = editor_countfree(lp); unit = canonical_unit(lp, unit); printf("OpenBSD area: "); psize(starting_sector, 0, lp); printf("-"); psize(ending_sector, 0, lp); printf("; size: "); psize(ending_sector - starting_sector, unit, lp); printf("; free: "); psize(fr, unit, lp); printf("\n# %16.16s %16.16s fstype [fsize bsize cpg]\n", "size", "offset"); for (i = 0; i < lp->d_npartitions; i++) display_partition(stdout, lp, i, unit); } void parse_autotable(char *filename) { FILE *cfile; size_t linesize = 0; char *line = NULL, *buf, *t; uint idx = 0, pctsum = 0; struct space_allocation *sa; if ((cfile = fopen(filename, "r")) == NULL) err(1, "%s", filename); if ((alloc_table = calloc(1, sizeof(struct alloc_table))) == NULL) err(1, NULL); alloc_table_nitems = 1; while (getline(&line, &linesize, cfile) != -1) { if ((alloc_table[0].table = reallocarray(alloc_table[0].table, idx + 1, sizeof(*sa))) == NULL) err(1, NULL); sa = &(alloc_table[0].table[idx]); memset(sa, 0, sizeof(*sa)); idx++; buf = line; if ((sa->mp = get_token(&buf)) == NULL || (sa->mp[0] != '/' && strcmp(sa->mp, "swap"))) errx(1, "%s: parse error on line %u", filename, idx); if ((t = get_token(&buf)) == NULL || parse_sizerange(t, &sa->minsz, &sa->maxsz) == -1) errx(1, "%s: parse error on line %u", filename, idx); if ((t = get_token(&buf)) != NULL && parse_pct(t, &sa->rate) == -1) errx(1, "%s: parse error on line %u", filename, idx); if (sa->minsz > sa->maxsz) errx(1, "%s: min size > max size on line %u", filename, idx); pctsum += sa->rate; } if (pctsum > 100) errx(1, "%s: sum of extra space allocation > 100%%", filename); alloc_table[0].sz = idx; free(line); fclose(cfile); } char * get_token(char **s) { char *p, *r; size_t tlen = 0; p = *s; while (**s != '\0' && !isspace((u_char)**s)) { (*s)++; tlen++; } if (tlen == 0) return (NULL); /* eat whitespace */ while (isspace((u_char)**s)) (*s)++; if ((r = strndup(p, tlen)) == NULL) err(1, NULL); return (r); } int apply_unit(double val, u_char unit, u_int64_t *n) { u_int64_t factor = 1; switch (tolower(unit)) { case 't': factor *= 1024; /* FALLTHROUGH */ case 'g': factor *= 1024; /* FALLTHROUGH */ case 'm': factor *= 1024; /* FALLTHROUGH */ case 'k': factor *= 1024; break; default: return (-1); } val *= factor / DEV_BSIZE; if (val > ULLONG_MAX) return (-1); *n = val; return (0); } int parse_sizespec(const char *buf, double *val, char **unit) { errno = 0; *val = strtod(buf, unit); if (errno == ERANGE || *val < 0 || *val > ULLONG_MAX) return (-1); /* too big/small */ if (*val == 0 && *unit == buf) return (-1); /* No conversion performed. */ if (*unit != NULL && *unit[0] == '\0') *unit = NULL; return (0); } int parse_sizerange(char *buf, u_int64_t *min, u_int64_t *max) { char *p, *unit1 = NULL, *unit2 = NULL; double val1 = 0, val2 = 0; if ((p = strchr(buf, '-')) != NULL) { p[0] = '\0'; p++; } *max = 0; if (parse_sizespec(buf, &val1, &unit1) == -1) return (-1); if (p != NULL && p[0] != '\0') { if (p[0] == '*') *max = -1; else if (parse_sizespec(p, &val2, &unit2) == -1) return (-1); } if (unit1 == NULL && (unit1 = unit2) == NULL) return (-1); if (apply_unit(val1, unit1[0], min) == -1) return (-1); if (val2 > 0) { if (apply_unit(val2, unit2[0], max) == -1) return (-1); } else if (*max == 0) *max = *min; free(buf); return (0); } int parse_pct(char *buf, int *n) { const char *errstr; if (buf[strlen(buf) - 1] == '%') buf[strlen(buf) - 1] = '\0'; *n = strtonum(buf, 0, 100, &errstr); if (errstr) { warnx("parse percent %s: %s", buf, errstr); return (-1); } free(buf); return (0); } int alignpartition(struct disklabel *lp, int partno, u_int64_t startalign, u_int64_t stopalign, int flags) { struct partition *pp = &lp->d_partitions[partno]; struct diskchunk *chunks; u_int64_t start, stop, maxstop; unsigned int i; u_int8_t fstype; start = DL_GETPOFFSET(pp); if ((flags & ROUND_OFFSET_UP) == ROUND_OFFSET_UP) start = ((start + startalign - 1) / startalign) * startalign; else if ((flags & ROUND_OFFSET_DOWN) == ROUND_OFFSET_DOWN) start = (start / startalign) * startalign; /* Find the chunk that contains 'start'. */ fstype = pp->p_fstype; pp->p_fstype = FS_UNUSED; chunks = free_chunks(lp); pp->p_fstype = fstype; for (i = 0; chunks[i].start != 0 || chunks[i].stop != 0; i++) { if (start >= chunks[i].start && start < chunks[i].stop) break; } if (chunks[i].stop == 0) { fprintf(stderr, "'%c' aligned offset %llu lies outside " "the OpenBSD bounds or inside another partition\n", 'a' + partno, start); return (1); } /* Calculate the new 'stop' sector, the sector after the partition. */ if ((flags & ROUND_SIZE_OVERLAP) == 0) maxstop = (chunks[i].stop / stopalign) * stopalign; else maxstop = (ending_sector / stopalign) * stopalign; stop = DL_GETPOFFSET(pp) + DL_GETPSIZE(pp); if ((flags & ROUND_SIZE_UP) == ROUND_SIZE_UP) stop = ((stop + stopalign - 1) / stopalign) * stopalign; else if ((flags & ROUND_SIZE_DOWN) == ROUND_SIZE_DOWN) stop = (stop / stopalign) * stopalign; if (stop > maxstop) stop = maxstop; if (stop <= start) { fprintf(stderr, "'%c' aligned size <= 0\n", 'a' + partno); return (1); } if (start != DL_GETPOFFSET(pp)) DL_SETPOFFSET(pp, start); if (stop != DL_GETPOFFSET(pp) + DL_GETPSIZE(pp)) DL_SETPSIZE(pp, stop - start); return (0); }