| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2001 |
| * |
| * 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 |
| */ |
| |
| /* |
| * NAME |
| * fcntl06.c |
| * |
| * DESCRIPTION |
| * Error checking conditions for remote locking of regions of a file. |
| * |
| * CALLS |
| * open(2), write(2), fcntl(2) |
| * |
| * ALGORITHM |
| * Test unlocking sections around a write lock using remote Lock/Unlock |
| * call which should all fail. |
| * |
| * USAGE |
| * fcntl06 |
| * |
| * HISTORY |
| * 07/2001 Ported by Wayne Boyer |
| * |
| * RESTRICTIONS |
| * Currently Linux kernel doesn't implement R_GETLK/R_SETLK facility, |
| * but this facility seems to be present in other standard flavours of |
| * Unix. Currently this program has all the testing done under |
| * "#ifdef LINUX_FILE_REGION_LOCK", when Linux implements the regions |
| * locking then, this testcase should be recompiled accordingly with the |
| * "ifdef" removed. |
| */ |
| |
| #include <fcntl.h> |
| #include <errno.h> |
| #include <signal.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include "test.h" |
| |
| #define F_RGETLK 10 /* kludge code */ |
| #define F_RSETLK 11 /* kludge code */ |
| |
| char *TCID = "fcntl06"; |
| int TST_TOTAL = 1; |
| |
| void setup(); |
| void cleanup(); |
| |
| #define STRINGSIZE 27 |
| #define STRING "abcdefghijklmnopqrstuvwxyz\n" |
| |
| int fd; |
| void unlock_file(); |
| int do_lock(int, short, short, int, int); |
| |
| int main(int ac, char **av) |
| { |
| int fail = 0; |
| |
| const char *msg; |
| |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); /* global setup */ |
| |
| fail = 0; |
| |
| #ifdef LINUX_FILE_REGION_LOCK |
| if (fcntl(fd, F_RGETLK, &tl) == -1) { |
| if (errno == EINVAL) |
| tst_brkm(TCONF, cleanup, |
| "fcntl remote locking feature not implemented in " |
| "the kernel"); |
| else { |
| /* |
| * FIXME (garrcoop): having it always pass on |
| * non-EINVAL is a bad test. |
| */ |
| tst_resm(TPASS, "fcntl on file failed"); |
| } |
| } |
| |
| /* |
| * Add a write lock to the middle of the file and unlock a section |
| * just before the lock |
| */ |
| if (do_lock(F_RSETLK, F_WRLCK, 0, 10, 5) == -1) |
| tst_resm(TFAIL, "F_RSETLK WRLCK failed"); |
| |
| if (do_lock(F_RSETLK, F_UNLCK, 0, 5, 5) == -1) |
| tst_resm(TFAIL | TERRNO, "F_RSETLK UNLOCK failed"); |
| |
| unlock_file(); |
| #else |
| tst_resm(TCONF, "system doesn't have LINUX_LOCK_FILE_REGION support"); |
| #endif |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| void setup(void) |
| { |
| char *buf = STRING; |
| char template[PATH_MAX]; |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| umask(0); |
| |
| TEST_PAUSE; |
| |
| tst_tmpdir(); |
| |
| snprintf(template, PATH_MAX, "fcntl06XXXXXX"); |
| |
| if ((fd = mkstemp(template)) == -1) |
| tst_resm(TBROK | TERRNO, "mkstemp failed"); |
| |
| if (write(fd, buf, STRINGSIZE) == -1) |
| tst_resm(TBROK | TERRNO, "write failed"); |
| } |
| |
| int do_lock(int cmd, short type, short whence, int start, int len) |
| { |
| struct flock fl; |
| |
| fl.l_type = type; |
| fl.l_whence = whence; |
| fl.l_start = start; |
| fl.l_len = len; |
| return (fcntl(fd, cmd, &fl)); |
| } |
| |
| void unlock_file(void) |
| { |
| if (do_lock(F_RSETLK, (short)F_UNLCK, (short)0, 0, 0) == -1) { |
| /* Same as FIXME comment above. */ |
| tst_resm(TPASS | TERRNO, "fcntl on file failed"); |
| } |
| } |
| |
| void cleanup(void) |
| { |
| |
| if (close(fd) == -1) |
| tst_resm(TWARN | TERRNO, "close failed"); |
| |
| tst_rmdir(); |
| |
| } |