| md.c (65176) | md.c (65374) |
|---|---|
| 1/* 2 * ---------------------------------------------------------------------------- 3 * "THE BEER-WARE LICENSE" (Revision 42): 4 * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you 5 * can do whatever you want with this stuff. If we meet some day, and you think 6 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp 7 * ---------------------------------------------------------------------------- 8 * | 1/* 2 * ---------------------------------------------------------------------------- 3 * "THE BEER-WARE LICENSE" (Revision 42): 4 * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you 5 * can do whatever you want with this stuff. If we meet some day, and you think 6 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp 7 * ---------------------------------------------------------------------------- 8 * |
| 9 * $FreeBSD: head/sys/dev/md/md.c 65176 2000-08-28 21:48:13Z dfr $ | 9 * $FreeBSD: head/sys/dev/md/md.c 65374 2000-09-02 19:17:34Z phk $ |
| 10 * 11 */ 12 13#include "opt_mfs.h" /* We have adopted some tasks from MFS */ 14#include "opt_md.h" | 10 * 11 */ 12 13#include "opt_mfs.h" /* We have adopted some tasks from MFS */ 14#include "opt_md.h" |
| 15#include "opt_devfs.h" | |
| 16 17#include <sys/param.h> 18#include <sys/systm.h> 19#include <sys/bio.h> 20#include <sys/conf.h> 21#include <sys/devicestat.h> 22#include <sys/disk.h> 23#include <sys/kernel.h> 24#include <sys/malloc.h> 25#include <sys/sysctl.h> 26#include <sys/linker.h> 27#include <sys/queue.h> 28 | 15 16#include <sys/param.h> 17#include <sys/systm.h> 18#include <sys/bio.h> 19#include <sys/conf.h> 20#include <sys/devicestat.h> 21#include <sys/disk.h> 22#include <sys/kernel.h> 23#include <sys/malloc.h> 24#include <sys/sysctl.h> 25#include <sys/linker.h> 26#include <sys/queue.h> 27 |
| 29#ifdef DEVFS 30#include <sys/eventhandler.h> 31#include <fs/devfs/devfs.h> 32#endif 33 | |
| 34#ifndef MD_NSECT 35#define MD_NSECT (10000 * 2) 36#endif 37 38MALLOC_DEFINE(M_MD, "MD disk", "Memory Disk"); 39MALLOC_DEFINE(M_MDSECT, "MD sectors", "Memory Disk Sectors"); 40 41static int md_debug; --- 77 unchanged lines hidden (view full) --- 119 struct md_s *sc; 120 struct disklabel *dl; 121 122 if (md_debug) 123 printf("mdopen(%s %x %x %p)\n", 124 devtoname(dev), flag, fmt, p); 125 126 sc = dev->si_drv1; | 28#ifndef MD_NSECT 29#define MD_NSECT (10000 * 2) 30#endif 31 32MALLOC_DEFINE(M_MD, "MD disk", "Memory Disk"); 33MALLOC_DEFINE(M_MDSECT, "MD sectors", "Memory Disk Sectors"); 34 35static int md_debug; --- 77 unchanged lines hidden (view full) --- 113 struct md_s *sc; 114 struct disklabel *dl; 115 116 if (md_debug) 117 printf("mdopen(%s %x %x %p)\n", 118 devtoname(dev), flag, fmt, p); 119 120 sc = dev->si_drv1; |
| 127#ifndef DEVFS 128 if (sc->unit + 1 == mdunits) | 121 if ((!devfs_present) && sc->unit + 1 == mdunits) |
| 129 mdcreate_malloc(-1); | 122 mdcreate_malloc(-1); |
| 130#endif | |
| 131 132 dl = &sc->disk.d_label; 133 bzero(dl, sizeof(*dl)); 134 dl->d_secsize = DEV_BSIZE; 135 dl->d_nsectors = 1024; 136 dl->d_ntracks = 1; 137 dl->d_secpercyl = dl->d_nsectors * dl->d_ntracks; 138 dl->d_secperunit = sc->nsect; --- 267 unchanged lines hidden (view full) --- 406 407 sc->nsect = MD_NSECT; /* for now */ 408 MALLOC(sc->secp, u_char **, sizeof(u_char *), M_MD, M_WAITOK); 409 bzero(sc->secp, sizeof(u_char *)); 410 sc->nsecp = 1; 411 printf("md%d: Malloc disk\n", sc->unit); 412} 413 | 123 124 dl = &sc->disk.d_label; 125 bzero(dl, sizeof(*dl)); 126 dl->d_secsize = DEV_BSIZE; 127 dl->d_nsectors = 1024; 128 dl->d_ntracks = 1; 129 dl->d_secpercyl = dl->d_nsectors * dl->d_ntracks; 130 dl->d_secperunit = sc->nsect; --- 267 unchanged lines hidden (view full) --- 398 399 sc->nsect = MD_NSECT; /* for now */ 400 MALLOC(sc->secp, u_char **, sizeof(u_char *), M_MD, M_WAITOK); 401 bzero(sc->secp, sizeof(u_char *)); 402 sc->nsecp = 1; 403 printf("md%d: Malloc disk\n", sc->unit); 404} 405 |
| 414#ifdef DEVFS | |
| 415static void 416md_clone (void *arg, char *name, int namelen, dev_t *dev) 417{ 418 int i, u; 419 420 if (*dev != NODEV) 421 return; | 406static void 407md_clone (void *arg, char *name, int namelen, dev_t *dev) 408{ 409 int i, u; 410 411 if (*dev != NODEV) 412 return; |
| 422 i = devfs_stdclone(name, NULL, "md", &u); | 413 i = dev_stdclone(name, NULL, "md", &u); |
| 423 if (i == 0) 424 return; 425 /* XXX: should check that next char is [\0sa-h] */ 426 /* 427 * Now we cheat: We just create the disk, but don't match. 428 * Since we run before it, subr_disk.c::disk_clone() will 429 * find our disk and match the sought for device. 430 */ 431 mdcreate_malloc(u); 432 return; 433} | 414 if (i == 0) 415 return; 416 /* XXX: should check that next char is [\0sa-h] */ 417 /* 418 * Now we cheat: We just create the disk, but don't match. 419 * Since we run before it, subr_disk.c::disk_clone() will 420 * find our disk and match the sought for device. 421 */ 422 mdcreate_malloc(u); 423 return; 424} |
| 434#endif | |
| 435 436static void 437md_drvinit(void *unused) 438{ 439 440 caddr_t mod; 441 caddr_t c; 442 u_char *ptr, *name, *type; --- 15 unchanged lines hidden (view full) --- 458 c = preload_search_info(mod, MODINFO_ADDR); 459 ptr = *(u_char **)c; 460 c = preload_search_info(mod, MODINFO_SIZE); 461 len = *(unsigned *)c; 462 printf("md%d: Preloaded image <%s> %d bytes at %p\n", 463 mdunits, name, len, ptr); 464 mdcreate_preload(ptr, len); 465 } | 425 426static void 427md_drvinit(void *unused) 428{ 429 430 caddr_t mod; 431 caddr_t c; 432 u_char *ptr, *name, *type; --- 15 unchanged lines hidden (view full) --- 448 c = preload_search_info(mod, MODINFO_ADDR); 449 ptr = *(u_char **)c; 450 c = preload_search_info(mod, MODINFO_SIZE); 451 len = *(unsigned *)c; 452 printf("md%d: Preloaded image <%s> %d bytes at %p\n", 453 mdunits, name, len, ptr); 454 mdcreate_preload(ptr, len); 455 } |
| 466#ifdef DEVFS 467 EVENTHANDLER_REGISTER(devfs_clone, md_clone, 0, 999); 468#else 469 mdcreate_malloc(-1); 470#endif | 456 EVENTHANDLER_REGISTER(dev_clone, md_clone, 0, 999); 457 if (!devfs_present) 458 mdcreate_malloc(-1); |
| 471} 472 473SYSINIT(mddev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR, md_drvinit,NULL) 474 475#ifdef MD_ROOT 476static void 477md_takeroot(void *junk) 478{ 479 if (mdrootready) 480 rootdevnames[0] = "ufs:/dev/md0c"; 481} 482 483SYSINIT(md_root, SI_SUB_MOUNT_ROOT, SI_ORDER_FIRST, md_takeroot, NULL); 484#endif 485 | 459} 460 461SYSINIT(mddev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR, md_drvinit,NULL) 462 463#ifdef MD_ROOT 464static void 465md_takeroot(void *junk) 466{ 467 if (mdrootready) 468 rootdevnames[0] = "ufs:/dev/md0c"; 469} 470 471SYSINIT(md_root, SI_SUB_MOUNT_ROOT, SI_ORDER_FIRST, md_takeroot, NULL); 472#endif 473 |