| subr_module.c (302408) | subr_module.c (337262) |
|---|---|
| 1/*- 2 * Copyright (c) 1998 Michael Smith 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 1998 Michael Smith 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> |
| 28__FBSDID("$FreeBSD: stable/11/sys/kern/subr_module.c 287000 2015-08-21 15:57:57Z royger $"); | 28__FBSDID("$FreeBSD: stable/11/sys/kern/subr_module.c 337262 2018-08-03 15:42:39Z markj $"); |
| 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/linker.h> 33 | 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/linker.h> 33 |
| 34#include <vm/vm.h> 35#include <vm/vm_extern.h> 36 |
|
| 34/* 35 * Preloaded module support 36 */ 37 38vm_offset_t preload_addr_relocate = 0; 39caddr_t preload_metadata; 40 41/* --- 155 unchanged lines hidden (view full) --- 197} 198 199/* 200 * Delete a preload record by name. 201 */ 202void 203preload_delete_name(const char *name) 204{ | 37/* 38 * Preloaded module support 39 */ 40 41vm_offset_t preload_addr_relocate = 0; 42caddr_t preload_metadata; 43 44/* --- 155 unchanged lines hidden (view full) --- 200} 201 202/* 203 * Delete a preload record by name. 204 */ 205void 206preload_delete_name(const char *name) 207{ |
| 205 caddr_t curp; 206 uint32_t *hdr; | 208 caddr_t addr, curp; 209 uint32_t *hdr, sz; |
| 207 int next; 208 int clearing; | 210 int next; 211 int clearing; |
| 212 213 addr = 0; 214 sz = 0; |
|
| 209 210 if (preload_metadata != NULL) { | 215 216 if (preload_metadata != NULL) { |
| 211 | 217 |
| 212 clearing = 0; 213 curp = preload_metadata; 214 for (;;) { 215 hdr = (uint32_t *)curp; | 218 clearing = 0; 219 curp = preload_metadata; 220 for (;;) { 221 hdr = (uint32_t *)curp; |
| 216 if (hdr[0] == 0 && hdr[1] == 0) 217 break; | 222 if (hdr[0] == MODINFO_NAME || (hdr[0] == 0 && hdr[1] == 0)) { 223 /* Free memory used to store the file. */ 224 if (addr != 0 && sz != 0) 225 kmem_bootstrap_free((vm_offset_t)addr, sz); 226 addr = 0; 227 sz = 0; |
| 218 | 228 |
| 219 /* Search for a MODINFO_NAME field */ 220 if (hdr[0] == MODINFO_NAME) { | 229 if (hdr[0] == 0) 230 break; |
| 221 if (!strcmp(name, curp + sizeof(uint32_t) * 2)) 222 clearing = 1; /* got it, start clearing */ | 231 if (!strcmp(name, curp + sizeof(uint32_t) * 2)) 232 clearing = 1; /* got it, start clearing */ |
| 223 else if (clearing) | 233 else if (clearing) { |
| 224 clearing = 0; /* at next one now.. better stop */ | 234 clearing = 0; /* at next one now.. better stop */ |
| 235 } |
|
| 225 } | 236 } |
| 226 if (clearing) | 237 if (clearing) { 238 if (hdr[0] == MODINFO_ADDR) 239 addr = *(caddr_t *)(curp + sizeof(uint32_t) * 2); 240 else if (hdr[0] == MODINFO_SIZE) 241 sz = *(uint32_t *)(curp + sizeof(uint32_t) * 2); |
| 227 hdr[0] = MODINFO_EMPTY; | 242 hdr[0] = MODINFO_EMPTY; |
| 243 } |
|
| 228 229 /* skip to next field */ 230 next = sizeof(uint32_t) * 2 + hdr[1]; 231 next = roundup(next, sizeof(u_long)); 232 curp += next; 233 } 234 } 235} --- 58 unchanged lines hidden --- | 244 245 /* skip to next field */ 246 next = sizeof(uint32_t) * 2 + hdr[1]; 247 next = roundup(next, sizeof(u_long)); 248 curp += next; 249 } 250 } 251} --- 58 unchanged lines hidden --- |