| /* Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. |
| * Portions Copyright © 1997-1999 Vita Nuova Limited |
| * Portions Copyright © 2000-2007 Vita Nuova Holdings Limited |
| * (www.vitanuova.com) |
| * Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others |
| * |
| * Modified for the Akaros operating system: |
| * Copyright (c) 2013-2014 The Regents of the University of California |
| * Copyright (c) 2013-2018 Google Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. */ |
| |
| #include <slab.h> |
| #include <kmalloc.h> |
| #include <kref.h> |
| #include <string.h> |
| #include <stdio.h> |
| #include <assert.h> |
| #include <error.h> |
| #include <cpio.h> |
| #include <pmap.h> |
| #include <smp.h> |
| #include <net/ip.h> |
| |
| unsigned int sizeD2M(struct dir *d) |
| { |
| char *sv[STAT_NR_STRINGS_AK]; |
| int i, ns; |
| |
| sv[0] = d->name; |
| sv[1] = d->uid; |
| sv[2] = d->gid; |
| sv[3] = d->muid; |
| sv[4] = d->ext; |
| |
| ns = 0; |
| for (i = 0; i < STAT_NR_STRINGS_AK; i++) |
| if (sv[i]) |
| ns += strlen(sv[i]); |
| |
| return STAT_FIX_LEN_AK + ns; |
| } |
| |
| /* This converts dirs into the Akaros format (P92000.u + timespecs). So far, we |
| * haven't needed to convert to a smaller format, such as you'd get if nbuf was |
| * too small. */ |
| unsigned int convD2M(struct dir *d, uint8_t * buf, unsigned int nbuf) |
| { |
| uint8_t *p, *ebuf; |
| char *sv[STAT_NR_STRINGS_AK]; |
| int i, ns, nsv[STAT_NR_STRINGS_AK], ss; |
| |
| if (nbuf < BIT16SZ) |
| return 0; |
| |
| p = buf; |
| ebuf = buf + nbuf; |
| |
| sv[0] = d->name; |
| sv[1] = d->uid; |
| sv[2] = d->gid; |
| sv[3] = d->muid; |
| sv[4] = d->ext; |
| |
| ns = 0; |
| for (i = 0; i < STAT_NR_STRINGS_AK; i++) { |
| if (sv[i]) |
| nsv[i] = strlen(sv[i]); |
| else |
| nsv[i] = 0; |
| ns += nsv[i]; |
| } |
| |
| ss = STAT_FIX_LEN_AK + ns; |
| |
| /* set size befor erroring, so user can know how much is needed */ |
| /* note that length excludes the count field itself */ |
| PBIT16(p, ss - BIT16SZ); |
| p += BIT16SZ; |
| |
| if (ss > nbuf) |
| return BIT16SZ; |
| |
| PBIT16(p, d->type); p += BIT16SZ; |
| PBIT32(p, d->dev); p += BIT32SZ; |
| PBIT8(p, d->qid.type); p += BIT8SZ; |
| PBIT32(p, d->qid.vers); p += BIT32SZ; |
| PBIT64(p, d->qid.path); p += BIT64SZ; |
| PBIT32(p, d->mode); p += BIT32SZ; |
| PBIT32(p, d->atime.tv_sec); p += BIT32SZ; |
| PBIT32(p, d->mtime.tv_sec); p += BIT32SZ; |
| PBIT64(p, d->length); p += BIT64SZ; |
| |
| for (i = 0; i < STAT_NR_STRINGS_AK; i++) { |
| ns = nsv[i]; |
| if (p + ns + BIT16SZ > ebuf) |
| return 0; |
| PBIT16(p, ns); p += BIT16SZ; |
| if (ns) |
| memmove(p, sv[i], ns); |
| p += ns; |
| } |
| PBIT32(p, d->n_uid); p += BIT32SZ; |
| PBIT32(p, d->n_gid); p += BIT32SZ; |
| PBIT32(p, d->n_muid); p += BIT32SZ; |
| PBIT64(p, d->atime.tv_sec); p += BIT64SZ; |
| PBIT64(p, d->atime.tv_nsec); p += BIT64SZ; |
| PBIT64(p, d->btime.tv_sec); p += BIT64SZ; |
| PBIT64(p, d->btime.tv_nsec); p += BIT64SZ; |
| PBIT64(p, d->ctime.tv_sec); p += BIT64SZ; |
| PBIT64(p, d->ctime.tv_nsec); p += BIT64SZ; |
| PBIT64(p, d->mtime.tv_sec); p += BIT64SZ; |
| PBIT64(p, d->mtime.tv_nsec); p += BIT64SZ; |
| |
| if (ss != p - buf) |
| return 0; |
| |
| return p - buf; |
| } |