diff options
Diffstat (limited to 'tests/sys/kern/kern_descrip_test.c')
| -rw-r--r-- | tests/sys/kern/kern_descrip_test.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/tests/sys/kern/kern_descrip_test.c b/tests/sys/kern/kern_descrip_test.c new file mode 100644 index 000000000000..07240d75b900 --- /dev/null +++ b/tests/sys/kern/kern_descrip_test.c @@ -0,0 +1,191 @@ +/*- + * Copyright (c) 2014 EMC Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <errno.h> +#include <fcntl.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <strings.h> +#include <sys/limits.h> +#include <sys/stat.h> +#include <sys/sysctl.h> +#include <unistd.h> +#include <atf-c.h> + +static volatile sig_atomic_t done; + +#define AFILE "afile" +#define EXPANDBY 1000 +#define PARALLEL 4 +#define RENDEZVOUS "rendezvous" +#define VALUE "value" + +ATF_TC_WITHOUT_HEAD(dup2__simple); +ATF_TC_BODY(dup2__simple, tc) +{ + int fd1, fd2; + struct stat sb1, sb2; + + ATF_REQUIRE((fd1 = open(AFILE, O_CREAT, 0644)) != -1); + fd2 = 27; + ATF_REQUIRE(dup2(fd1, fd2) != -1); + ATF_REQUIRE(fstat(fd1, &sb1) != -1); + ATF_REQUIRE(fstat(fd2, &sb2) != -1); + ATF_REQUIRE(bcmp(&sb1, &sb2, sizeof(sb1)) == 0); +} + +ATF_TC(dup2__ebadf_when_2nd_arg_out_of_range); +ATF_TC_HEAD(dup2__ebadf_when_2nd_arg_out_of_range, tc) +{ + atf_tc_set_md_var(tc, "descr", "Regression test for r234131"); +} + +ATF_TC_BODY(dup2__ebadf_when_2nd_arg_out_of_range, tc) +{ + int fd1, fd2, ret; + + ATF_REQUIRE((fd1 = open(AFILE, O_CREAT, 0644)) != -1); + fd2 = INT_MAX; + ret = dup2(fd1, fd2); + ATF_CHECK_EQ(-1, ret); + ATF_CHECK_EQ(EBADF, errno); +} + +static void +handler(int s __unused) +{ + done++; +} + +static void +openfiles2(size_t n) +{ + size_t i; + int r; + + errno = 0; + for (i = 0; i < n; i++) + ATF_REQUIRE((r = open(AFILE, O_RDONLY)) != -1); + kill(getppid(), SIGUSR1); + + for (;;) { + if (access(RENDEZVOUS, R_OK) != 0) + break; + usleep(1000); + } + _exit(0); +} + +static void +openfiles(size_t n) +{ + int i, fd; + + signal(SIGUSR1, handler); + ATF_REQUIRE((fd = open(AFILE, O_CREAT, 0644)) != -1); + close(fd); + ATF_REQUIRE((fd = open(RENDEZVOUS, O_CREAT, 0644)) != -1); + close(fd); + done = 0; + for (i = 0; i < PARALLEL; i++) + if (fork() == 0) + openfiles2(n / PARALLEL); + while (done != PARALLEL) + usleep(1000); + unlink(RENDEZVOUS); + usleep(40000); +} + +ATF_TC_WITH_CLEANUP(kern_maxfiles__increase); +ATF_TC_HEAD(kern_maxfiles__increase, tc) +{ + atf_tc_set_md_var(tc, "require.user", "root"); + atf_tc_set_md_var(tc, "require.config", "allow_sysctl_side_effects"); + atf_tc_set_md_var(tc, "descr", + "Check kern.maxfiles expansion"); +} + +ATF_TC_BODY(kern_maxfiles__increase, tc) +{ + size_t oldlen; + int maxfiles, oldmaxfiles, current; + char buf[80]; + + oldlen = sizeof(maxfiles); + if (sysctlbyname("kern.maxfiles", &maxfiles, &oldlen, NULL, 0) == -1) + atf_tc_fail("getsysctlbyname(%s): %s", "kern.maxfiles", + strerror(errno)); + if (sysctlbyname("kern.openfiles", ¤t, &oldlen, NULL, 0) == -1) + atf_tc_fail("getsysctlbyname(%s): %s", "kern.openfiles", + strerror(errno)); + + oldmaxfiles = maxfiles; + + /* Store old kern.maxfiles in a symlink for cleanup */ + snprintf(buf, sizeof(buf), "%d", oldmaxfiles); + if (symlink(buf, VALUE) == 1) + atf_tc_fail("symlink(%s, %s): %s", buf, VALUE, + strerror(errno)); + + maxfiles += EXPANDBY; + if (sysctlbyname("kern.maxfiles", NULL, 0, &maxfiles, oldlen) == -1) + atf_tc_fail("getsysctlbyname(%s): %s", "kern.maxfiles", + strerror(errno)); + + openfiles(oldmaxfiles - current + 1); + (void)unlink(VALUE); +} + +ATF_TC_CLEANUP(kern_maxfiles__increase, tc) +{ + size_t oldlen; + int n, oldmaxfiles; + char buf[80]; + + if ((n = readlink(VALUE, buf, sizeof(buf))) > 0) { + buf[MIN((size_t)n, sizeof(buf) - 1)] = '\0'; + if (sscanf(buf, "%d", &oldmaxfiles) == 1) { + oldlen = sizeof(oldmaxfiles); + (void) sysctlbyname("kern.maxfiles", NULL, 0, + &oldmaxfiles, oldlen); + } + } +} + +ATF_TP_ADD_TCS(tp) +{ + + ATF_TP_ADD_TC(tp, dup2__simple); + ATF_TP_ADD_TC(tp, dup2__ebadf_when_2nd_arg_out_of_range); + ATF_TP_ADD_TC(tp, kern_maxfiles__increase); + + return (atf_no_error()); +} |