| /* |
| * Copyright (c) 2013 FNST, DAN LI <li.dan@cn.fujitsu.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| * the GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* |
| * Test Description: |
| * Verify MAP_LOCKED works fine. |
| * "Lock the pages of the mapped region into memory in the manner of mlock(2)." |
| * |
| * Expected Result: |
| * mmap() should succeed returning the address of the mapped region, |
| * and this region should be locked into memory. |
| */ |
| #include <stdio.h> |
| #include <sys/mman.h> |
| |
| #include "test.h" |
| #include "usctest.h" |
| |
| #define TEMPFILE "mmapfile" |
| #define MMAPSIZE (1UL<<20) |
| #define LINELEN 256 |
| |
| char *TCID = "mmap14"; |
| int TST_TOTAL = 1; |
| |
| static char *addr; |
| |
| static void getvmlck(unsigned int *lock_sz); |
| static void setup(void); |
| static void cleanup(void); |
| |
| int main(int argc, char *argv[]) |
| { |
| int lc; |
| char *msg; |
| unsigned int sz_before; |
| unsigned int sz_after; |
| unsigned int sz_ch; |
| |
| msg = parse_opts(argc, argv, NULL, NULL); |
| if (msg != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| tst_count = 0; |
| |
| getvmlck(&sz_before); |
| |
| addr = mmap(NULL, MMAPSIZE, PROT_READ | PROT_WRITE, |
| MAP_PRIVATE | MAP_LOCKED | MAP_ANONYMOUS, |
| -1, 0); |
| |
| if (addr == MAP_FAILED) { |
| tst_resm(TFAIL | TERRNO, "mmap of %s failed", TEMPFILE); |
| continue; |
| } |
| |
| if (STD_FUNCTIONAL_TEST) { |
| |
| getvmlck(&sz_after); |
| |
| sz_ch = sz_after - sz_before; |
| if (sz_ch == MMAPSIZE / 1024) |
| tst_resm(TPASS, "Functionality of mmap() " |
| "successful"); |
| else |
| tst_resm(TFAIL, "Expected %luK locked, " |
| "get %uK locked", |
| MMAPSIZE / 1024, sz_ch); |
| |
| } else { |
| tst_resm(TPASS, "call succeeded"); |
| } |
| |
| if (munmap(addr, MMAPSIZE) != 0) |
| tst_brkm(TFAIL | TERRNO, NULL, "munmap failed"); |
| } |
| |
| cleanup(); |
| tst_exit(); |
| |
| } |
| |
| void getvmlck(unsigned int *lock_sz) |
| { |
| int ret; |
| char line[LINELEN]; |
| FILE *fstatus = NULL; |
| |
| fstatus = fopen("/proc/self/status", "r"); |
| if (fstatus == NULL) |
| tst_brkm(TFAIL | TERRNO, NULL, "Open dev status failed"); |
| |
| while (fgets(line, LINELEN, fstatus) != NULL) |
| if (strstr(line, "VmLck") != NULL) |
| break; |
| |
| ret = sscanf(line, "%*[^0-9]%d%*[^0-9]", lock_sz); |
| if (ret != 1) |
| tst_brkm(TFAIL | TERRNO, NULL, "Get lock size failed"); |
| |
| fclose(fstatus); |
| } |
| |
| static void setup(void) |
| { |
| tst_require_root(NULL); |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| } |
| |
| static void cleanup(void) |
| { |
| TEST_CLEANUP; |
| } |