/*-
* Copyright (c) 2008 Robert N. M. Watson
* 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.
*/
/*-
* This regression test attempts to confirm that the flags used at open-time
* for a file descriptor properly limit system calls that should be affected
* by those flags. Currently:
*
* System call Policy Tested
* __acl_aclcheck_fd(2) any no
* __acl_delete_fd(2) any no
* __acl_get_fd(2) any no
* __acl_set_fd(2) any no
* aio_fsync(2) any no
* aio_read(2) O_RDONLY or O_RDWR yes
* aio_write(2) O_WRONLY or O_RDWR yes
* dup(2) any yes
* dup2(2) any yes
* extattr_delete_fd(2) O_WRONLY or O_RDWR no
* extattr_get_fd(2) O_RDONLY or O_RDWR no
* extattr_list_fd(2) O_RDONLY or O_RDWR no
* extattr_set_fd(2) O_WRONLY or O_RDWR no
* fchdir(2) any directory yes
* fchflags(2) any yes
* fchmod(2) any yes
* fchown(2) any yes
* flock(2) any yes
* fpathconf(2) any yes
* fstat(2) any yes
* fstatfs(2) any yes
* fsync(2) any yes
* ftruncate(2) O_WRONLY or O_RDWR yes
* futimes(2) any yes
* getdents(2) O_RDONLY directory yes
* lseek(2) any yes
* mmap(2) PROT_READ O_RDONLY or O_RDWR yes
* mmap(2) PROT_WRITE O_WRONLY or O_RDWR yes
* mmap(2) PROT_WRITE + MAP_PRIV O_RDONLY or O_RDWR yes
* mmap(2) PROT_EXEC O_RDONLY or O_RDWR yes
* pread(2) O_RDONLY or O_RDWR yes
* preadv(2) O_RDONLY or O_RDWR yes
* pwrite(2) O_WRONLY or O_RDWR yes
* pwritev(2) O_WRONLY or O_RDWR yes
* read(2) O_RDONLY or O_RDWR yes
* readv(2) O_RDONLY or O_RDWR yes
* sendfile(2) O_RDONLY or O_RDWR on file yes
* write(2) O_WRONLY or O_RDWR yes
* writev(2) O_WRONLY or O_RDWR yes
*
* These checks do not verify that original permissions would allow the
* operation or that open is properly impacted by permissions, just that once
* a file descriptor is held, open-time limitations are implemented.
*
* We do, however, test that directories cannot be opened as writable.
*
* XXXRW: Arguably we should also test combinations of bits to mmap(2).
*
* XXXRW: Should verify mprotect() remapping limits.
*
* XXXRW: kqueue(2)/kevent(2), poll(2), select(2)
*
* XXXRW: oaio_read(2), oaio_write(2), freebsd6_*(2).
*
* XXXRW: __mac*(2)
*
* XXXRW: message queue and shared memory fds?
*/
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/uio.h>
#include <aio.h>
#include <dirent.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define PERM_FILE 0644 /* Allow read, write. Someday exec? */
#define PERM_DIR 0755 /* Allow read, write, exec. */
/*
* Modes to try all tests with.
*/
static const int file_modes[] = { O_RDONLY, O_WRONLY, O_RDWR,
O_RDONLY | O_TRUNC, O_WRONLY | O_TRUNC, O_RDWR | O_TRUNC };
static const int file_modes_count = nitems(file_modes);
static const int dir_modes[] = { O_RDONLY };
static const int dir_modes_count = nitems(dir_modes);
static int testnum;
static int aio_present;
static void
ok_mode(const char *testname, const char *comment, int mode)
{
testnum++;
if (comment == NULL)
printf("ok %d - %s # mode 0x%x\n", testnum, testname, mode);
else
printf("ok %d - %s # mode 0x%x - %s\n", testnum, testname,
mode, comment);
}
static void
notok_mode(const char *testname, const char *comment, int mode)
{
testnum++;
if (comment == NULL)
printf("not ok %d - %s # mode 0x%x\n", testnum, testname,
mode);
else
printf("not ok %d - %s # mode 0x%x - %s\n", testnum, testname,
mode, comment);
}
/*
* Before we get started, confirm that we can't open directories writable.
*/
static void
try_directory_open(const char *testname, const char *directory,
int mode, int expected_errno)
{
int dfd;
dfd = open(directory, mode);
if (dfd >= 0) {
if (expected_errno)
notok_mode(testname, "opened", mode);
else
ok_mode(testname, NULL, mode);
close(dfd);
} else {
if (expected_errno && expected_errno == errno)
ok_mode(testname, NULL, mode);
else if (expected_errno != 0)
notok_mode(testname, "wrong errno", mode);
else
notok_mode(testname, "failed", mode);
}
}
static void
check_directory_open_modes(const char *directory, const int *modes,
int modes_count)
{
int expected_errno, i, mode;
/*
* Directories should only open with O_RDONLY. Notice that we use
* file_modes and not dirmodes.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
if (mode == O_RDONLY)
expected_errno = 0;
else
expected_errno = EISDIR;
try_directory_open(__func__, directory, mode,
expected_errno);
}
}
static void
check_dup(const char *testname, const char *path, const int *modes,
int modes_count)
{
int dfd, fd, i, mode;
/*
* dup() should work regardless of open mode.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
dfd = dup(fd);
if (dfd >= 0) {
ok_mode(testname, NULL, mode);
close(dfd);
} else
notok_mode(testname, NULL, mode);
close(fd);
}
}
static void
check_dup2(const char *testname, const char *path, const int *modes,
int modes_count)
{
int dfd, fd, i, mode;
/*
* dup2() should work regardless of open mode.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
dfd = dup2(fd, 500); /* Arbitrary but high number. */
if (dfd >= 0) {
ok_mode(testname, NULL, mode);
close(dfd);
} else
notok_mode(testname, NULL, mode);
close(fd);
}
}
static void
check_fchdir(const char *testname, const char *path, const int *modes,
int modes_count)
{
int fd, i, mode;
/*
* fchdir() should work regardless of open mode.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
if (fchdir(fd) == 0)
ok_mode(testname, NULL, mode);
else
notok_mode(testname, "failed", mode);
close(fd);
}
}
static void
check_fchflags(const char *testname, const char *path, const int *modes,
int modes_count)
{
int fd, i, mode;
/*
* fchflags() should work regardless of open mode.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
if (fchflags(fd, UF_NODUMP) == 0)
ok_mode(testname, NULL, mode);
else
notok_mode(testname, "failed", mode);
close(fd);
}
}
static void
check_fchmod(const char *testname, const char *path, int setmode,
const int *modes, int modes_count)
{
int fd, i, mode;
/*
* fchmod() should work regardless of open mode.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
if (fchmod(fd, setmode) == 0)
ok_mode(testname, NULL, mode);
else
notok_mode(testname, "failed", mode);
close(fd);
}
}
static void
check_fchown(const char *testname, const char *path, const int *modes,
int modes_count)
{
int fd, i, mode;
/*
* fchown() should work regardless of open mode.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
if (fchown(fd, -1, -1) == 0)
ok_mode(testname, NULL, mode);
else
notok_mode(testname, "failed", mode);
close(fd);
}
}
static void
check_flock(const char *testname, const char *path, const int *modes,
int modes_count)
{
int fd, i, mode;
/*
* flock() should work regardless of open mode.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
if (flock(fd, LOCK_EX) == 0)
ok_mode(testname, NULL, mode);
else
notok_mode(testname, "failed", mode);
close(fd);
}
}
static void
check_fpathconf(const char *testname, const char *path, const int *modes,
int modes_count)
{
int fd, i, mode;
long l;
/*
* fpathconf() should work regardless of open mode.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
l = fpathconf(fd, _PC_FILESIZEBITS);
if (l >= 0)
ok_mode(testname, NULL, mode);
else
notok_mode(testname, "failed", mode);
close(fd);
}
}
static void
check_fstat(const char *testname, const char *path, const int *modes,
int modes_count)
{
struct stat sb;
int fd, i, mode;
/*
* fstat() should work regardless of open mode.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
if (fstat(fd, &sb) == 0)
ok_mode(testname, NULL, mode);
else
notok_mode(testname, "failed", mode);
close(fd);
}
}
static void
check_fstatfs(const char *testname, const char *path, const int *modes,
int modes_count)
{
struct statfs statfs;
int fd, i, mode;
/*
* fstatfs() should work regardless of open mode.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
if (fstatfs(fd, &statfs) == 0)
ok_mode(testname, NULL, mode);
else
notok_mode(testname, "failed", mode);
close(fd);
}
}
static void
check_fsync(const char *testname, const char *path, const int *modes,
int modes_count)
{
int fd, i, mode;
/*
* fstatfs() should work regardless of open mode.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
if (fsync(fd) == 0)
ok_mode(testname, NULL, mode);
else
notok_mode(testname, "failed", mode);
close(fd);
}
}
static void
check_ftruncate(const char *testname, const char *path, const int *modes,
int modes_count)
{
struct stat sb;
int fd, i, mode;
/*
* ftruncate() should work as long as long as (mode & O_ACCMODE) is
* O_RDWR or O_WRONLY.
*
* Directories should never be writable, so this test should always
* pass for directories...
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
notok_mode(testname, "truncate1 skipped", mode);
notok_mode(testname, "truncate2 skipped", mode);
notok_mode(testname, "truncate3 skipped", mode);
continue;
}
if (fstat(fd, &sb) < 0) {
notok_mode(testname, "fstat", mode);
notok_mode(testname, "truncate1 skipped", mode);
notok_mode(testname, "truncate2 skipped", mode);
notok_mode(testname, "truncate3 skipped", mode);
close(fd);
continue;
}
ok_mode(testname, "setup", mode);
/* Truncate to grow file. */
if (ftruncate(fd, sb.st_size + 1) == 0) {
if (((mode & O_ACCMODE) == O_WRONLY) ||
((mode & O_ACCMODE) == O_RDWR))
ok_mode(testname, "truncate1 succeeded",
mode);
else {
notok_mode(testname, "truncate1 succeeded",
mode);
notok_mode(testname, "truncate2 skipped",
mode);
notok_mode(testname, "truncate3 skipped",
mode);
close(fd);
continue;
}
} else {
if (((mode & O_ACCMODE) == O_WRONLY) ||
((mode & O_ACCMODE) == O_RDWR)) {
notok_mode(testname, "truncate1 failed",
mode);
notok_mode(testname, "truncate2 skipped",
mode);
notok_mode(testname, "truncate3 skipped",
mode);
close(fd);
continue;
} else
ok_mode(testname, "truncate1 failed", mode);
}
/* Truncate to same size. */
if (ftruncate(fd, sb.st_size + 1) == 0) {
if (((mode & O_ACCMODE) == O_WRONLY) ||
((mode & O_ACCMODE) == O_RDWR))
ok_mode(testname, "truncate2 succeeded",
mode);
else {
notok_mode(testname, "truncate2 succeeded",
mode);
notok_mode(testname, "truncate3 skipped",
mode);
close(fd);
continue;
}
} else {
if (((mode & O_ACCMODE) == O_WRONLY) ||
((mode & O_ACCMODE) == O_RDWR)) {
notok_mode(testname, "truncate2 failed",
mode);
notok_mode(testname, "truncate3 skipped",
mode);
close(fd);
continue;
} else
ok_mode(testname, "truncate2 failed", mode);
}
/* Truncate to shrink. */
if (ftruncate(fd, sb.st_size) == 0) {
if (((mode & O_ACCMODE) == O_WRONLY) ||
((mode & O_ACCMODE) == O_RDWR))
ok_mode(testname, "truncate3 succeeded",
mode);
else
notok_mode(testname, "truncate3 succeeded",
mode);
} else {
if (((mode & O_ACCMODE) == O_WRONLY) ||
((mode & O_ACCMODE) == O_RDWR))
notok_mode(testname, "truncate3 failed",
mode);
else
ok_mode(testname, "truncate3 failed", mode);
}
close(fd);
}
}
static void
check_futimes(const char *testname, const char *path, const int *modes,
int modes_count)
{
int fd, i, mode;
/*
* futimes() should work regardless of open mode.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
if (futimes(fd, NULL) == 0)
ok_mode(testname, NULL, mode);
else
notok_mode(testname, "failed", mode);
close(fd);
}
}
static void
check_lseek(const char *testname, const char *path, const int *modes,
int modes_count)
{
int fd, i, mode;
/*
* lseek() should work regardless of open mode.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
if (lseek(fd, 100, SEEK_SET) == 100)
ok_mode(testname, NULL, mode);
else
notok_mode(testname, "failed", mode);
close(fd);
}
}
static void
check_getdents(const char *testname, const char *path, int isdir,
const int *modes, int modes_count)
{
int fd, i, mode;
char buf[8192];
/*
* getdents() should always work on directories and never on files,
* assuming directories are always opened for read (which they are).
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
if (getdents(fd, buf, sizeof(buf)) >= 0) {
if (isdir && ((mode & O_ACCMODE) == O_RDONLY))
ok_mode(testname, "directory succeeded",
mode);
else if (isdir)
notok_mode(testname, "directory succeeded",
mode);
else
notok_mode(testname, "file succeeded", mode);
} else {
if (isdir && ((mode & O_ACCMODE) == O_RDONLY))
notok_mode(testname, "directory failed",
mode);
else if (isdir)
ok_mode(testname, "directory failed", mode);
else
ok_mode(testname, "file failed", mode);
}
close(fd);
}
}
static void
check_sendfile(const char *testname, const char *path, int isdir,
const int *modes, int modes_count)
{
int fd, i, mode, sv[2];
off_t sent;
/*
* sendfile() should work only on files, and only when the access mode
* is O_RDONLY or O_RDWR.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
if (socketpair(PF_LOCAL, SOCK_STREAM, 0, sv) < 0) {
notok_mode(testname, "socketpair", mode);
continue;
}
if (sendfile(fd, sv[0], 0, 1, NULL, &sent, 0) == 0) {
if (isdir)
notok_mode(testname, "directory succeeded",
mode);
else if (((mode & O_ACCMODE) == O_RDONLY) ||
((mode & O_ACCMODE) == O_RDWR))
ok_mode(testname, "succeeded", mode);
else
notok_mode(testname, "succeeded", mode);
} else {
if (isdir)
ok_mode(testname, "directory failed", mode);
else if (((mode & O_ACCMODE) == O_RDONLY) ||
((mode & O_ACCMODE) == O_RDWR))
notok_mode(testname, "failed", mode);
else
ok_mode(testname, "failed", mode);
}
close(sv[0]);
close(sv[1]);
close(fd);
}
}
/*
* Various functions write, so just make write-like wrappers for them.
*/
typedef ssize_t (*write_fn)(int d, const void *buf, size_t nbytes);
static ssize_t
writev_wrapper(int d, const void *buf, size_t nbytes)
{
struct iovec iov;
iov.iov_base = (void *)buf;
iov.iov_len = nbytes;
return (writev(d, &iov, 1));
}
static ssize_t
pwrite_wrapper(int d, const void *buf, size_t nbytes)
{
return (pwrite(d, buf, nbytes, 0));
}
static ssize_t
pwritev_wrapper(int d, const void *buf, size_t nbytes)
{
struct iovec iov;
iov.iov_base = (void *)buf;
iov.iov_len = nbytes;
return (pwritev(d, &iov, 1, 0));
}
static ssize_t
aio_write_wrapper(int d, const void *buf, size_t nbytes)
{
struct aiocb aiocb;
struct aiocb const *aiocb_array[] = { &aiocb };
bzero(&aiocb, sizeof(aiocb));
aiocb.aio_fildes = d;
aiocb.aio_buf = (void *)buf;
aiocb.aio_nbytes = nbytes;
if (aio_write(&aiocb) < 0)
return (-1);
aiocb_array[0] = &aiocb;
if (aio_suspend(aiocb_array, 1, NULL) < 0)
return (-1);
return (aio_return(&aiocb));
}
static void
check_write(const char *testname, write_fn fn, const char *path,
const int *modes, int modes_count)
{
int fd, i, mode;
char ch;
/*
* write() should never succeed for directories, but especially
* because they can only be opened read-only. write() on files
* should succeed for O_WRONLY and O_RDWR descriptors.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
if (fn(fd, &ch, sizeof(ch)) < 0) {
if ((mode & O_ACCMODE) == O_WRONLY ||
(mode & O_ACCMODE) == O_RDWR)
notok_mode(testname, "write failed", mode);
else
ok_mode(testname, "write failed", mode);
} else {
if (!((mode & O_ACCMODE) == O_WRONLY ||
(mode & O_ACCMODE) == O_RDWR))
notok_mode(testname, "write succeeded", mode);
else
ok_mode(testname, "write succeeded", mode);
}
close(fd);
}
}
/*
* Various functions read, so just make read-like wrappers for them.
*/
typedef ssize_t (*read_fn)(int d, void *buf, size_t nbytes);
static ssize_t
readv_wrapper(int d, void *buf, size_t nbytes)
{
struct iovec iov;
iov.iov_base = buf;
iov.iov_len = nbytes;
return (readv(d, &iov, 1));
}
static ssize_t
pread_wrapper(int d, void *buf, size_t nbytes)
{
return (pread(d, buf, nbytes, 0));
}
static ssize_t
preadv_wrapper(int d, void *buf, size_t nbytes)
{
struct iovec iov;
iov.iov_base = buf;
iov.iov_len = nbytes;
return (preadv(d, &iov, 1, 0));
}
static ssize_t
aio_read_wrapper(int d, void *buf, size_t nbytes)
{
struct aiocb aiocb;
struct aiocb const *aiocb_array[] = { &aiocb };
bzero(&aiocb, sizeof(aiocb));
aiocb.aio_fildes = d;
aiocb.aio_buf = buf;
aiocb.aio_nbytes = nbytes;
if (aio_read(&aiocb) < 0)
return (-1);
if (aio_suspend(aiocb_array, 1, NULL) < 0)
return (-1);
return (aio_return(&aiocb));
}
static void
check_read(const char *testname, read_fn fn, const char *path,
const int *modes, int modes_count)
{
int fd, i, mode;
char ch;
/*
* read() should (generally) succeeded on directories. read() on
* files should succeed for O_RDONLY and O_RDWR descriptors.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
if (fn(fd, &ch, sizeof(ch)) < 0) {
if ((mode & O_ACCMODE) == O_RDONLY ||
(mode & O_ACCMODE) == O_RDWR)
notok_mode(testname, "read failed", mode);
else
ok_mode(testname, "read failed", mode);
} else {
if (!((mode & O_ACCMODE) == O_RDONLY ||
(mode & O_ACCMODE) == O_RDWR))
notok_mode(testname, "read succeeded", mode);
else
ok_mode(testname, "read succeeded", mode);
}
close(fd);
}
}
static void
check_mmap_read(const char *testname, const char *path, int isdir,
const int *modes, int modes_count)
{
int fd, i, mode;
char *addr;
/*
* mmap() read should fail for directories (ideally?) but succeed for
* O_RDONLY and O_RDWR file descriptors.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
addr = mmap(NULL, getpagesize(), PROT_READ, MAP_SHARED, fd,
0);
if (addr == MAP_FAILED) {
if (isdir)
ok_mode(testname, "mmap dir failed", mode);
else if ((mode & O_ACCMODE) == O_RDONLY ||
(mode & O_ACCMODE) == O_RDWR)
notok_mode(testname, "mmap file failed",
mode);
else
ok_mode(testname, "mmap file failed", mode);
} else {
if (isdir)
notok_mode(testname, "mmap dir succeeded",
mode);
else if ((mode & O_ACCMODE) == O_RDONLY ||
(mode & O_ACCMODE) == O_RDWR)
ok_mode(testname, "mmap file succeeded",
mode);
else
notok_mode(testname, "mmap file succeeded",
mode);
(void)munmap(addr, getpagesize());
}
close(fd);
}
}
static void
check_mmap_write(const char *testname, const char *path, const int *modes,
int modes_count)
{
int fd, i, mode;
char *addr;
/*
* mmap() will always fail for directories (ideally) as they are
* always open O_RDONLY. Check for O_WRONLY or O_RDWR to permit a
* write mapping. This variant does a MAP_SHARED mapping, but we
* are also interested in MAP_PRIVATE.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
addr = mmap(NULL, getpagesize(), PROT_WRITE, MAP_SHARED, fd,
0);
if (addr == MAP_FAILED) {
if ((mode & O_ACCMODE) == O_WRONLY ||
(mode & O_ACCMODE) == O_RDWR)
notok_mode(testname, "mmap failed",
mode);
else
ok_mode(testname, "mmap failed", mode);
} else {
if ((mode & O_ACCMODE) == O_WRONLY ||
(mode & O_ACCMODE) == O_RDWR)
ok_mode(testname, "mmap succeeded",
mode);
else
notok_mode(testname, "mmap succeeded", mode);
(void)munmap(addr, getpagesize());
}
close(fd);
}
}
static void
check_mmap_exec(const char *testname, const char *path, int isdir,
const int *modes, int modes_count)
{
int fd, i, mode;
char *addr;
/*
* mmap() exec should fail for directories (ideally?) but succeed for
* O_RDONLY and O_RDWR file descriptors.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
addr = mmap(NULL, getpagesize(), PROT_EXEC, MAP_SHARED, fd,
0);
if (addr == MAP_FAILED) {
if (isdir)
ok_mode(testname, "mmap dir failed", mode);
else if ((mode & O_ACCMODE) == O_RDONLY ||
(mode & O_ACCMODE) == O_RDWR)
notok_mode(testname, "mmap file failed",
mode);
else
ok_mode(testname, "mmap file failed", mode);
} else {
if (isdir)
notok_mode(testname, "mmap dir succeeded",
mode);
else
ok_mode(testname, "mmap file succeeded",
mode);
(void)munmap(addr, getpagesize());
}
close(fd);
}
}
static void
check_mmap_write_private(const char *testname, const char *path, int isdir,
const int *modes, int modes_count)
{
int fd, i, mode;
char *addr;
/*
* mmap() write private should succeed for readable descriptors
* except for directories.
*/
for (i = 0; i < modes_count; i++) {
mode = modes[i];
fd = open(path, mode);
if (fd < 0) {
notok_mode(testname, "open", mode);
continue;
}
addr = mmap(NULL, getpagesize(), PROT_READ | PROT_WRITE,
MAP_PRIVATE, fd, 0);
if (addr == MAP_FAILED) {
if (isdir)
ok_mode(testname, "mmap dir failed", mode);
else if ((mode & O_ACCMODE) == O_RDONLY ||
(mode & O_ACCMODE) == O_RDWR)
notok_mode(testname, "mmap file failed",
mode);
else
ok_mode(testname, "mmap file failed", mode);
} else {
if (isdir)
notok_mode(testname, "mmap dir succeeded",
mode);
else if ((mode & O_ACCMODE) == O_RDONLY ||
(mode & O_ACCMODE) == O_RDWR)
ok_mode(testname, "mmap file succeeded",
mode);
else
notok_mode(testname, "mmap file succeeded",
mode);
(void)munmap(addr, getpagesize());
}
close(fd);
}
}
int
main(void)
{
char dir_path[PATH_MAX], file_path[PATH_MAX];
int dummy, fd;
size_t size;
aio_present = 0;
size = sizeof(dummy);
if (sysctlbyname("vfs.aio", &dummy, &size, NULL, 0) < 0) {
if (errno == EISDIR)
aio_present = 1;
}
strlcpy(dir_path, "/tmp/open-dir.XXXXXXXXXXX", sizeof(dir_path));
if (mkdtemp(dir_path) == NULL)
err(1, "mkdtemp");
if (chmod(dir_path, PERM_DIR) < 0) {
warn("chmod %s", dir_path);
(void)rmdir(dir_path);
exit(1);
}
strlcpy(file_path, "/tmp/open-file.XXXXXXXXXXX", sizeof(file_path));
fd = mkstemp(file_path);
if (fd < 0) {
warn("mkstemp");
(void)rmdir(dir_path);
exit(1);
}
close(fd);
if (chmod(file_path, PERM_FILE) < 0) {
warn("chmod %s", file_path);
(void)unlink(file_path);
(void)rmdir(dir_path);
exit(1);
}
check_directory_open_modes(dir_path, file_modes, file_modes_count);
check_dup("check_dup_dir", dir_path, dir_modes, dir_modes_count);
check_dup("check_dup_file", file_path, file_modes, file_modes_count);
check_dup2("check_dup2_dir", dir_path, dir_modes, dir_modes_count);
check_dup2("check_dup2_file", file_path, file_modes,
file_modes_count);
check_fchdir("check_fchdir", dir_path, dir_modes, dir_modes_count);
check_fchflags("check_fchflags_dir", dir_path, dir_modes,
dir_modes_count);
check_fchflags("check_fchflags_file", file_path, file_modes,
file_modes_count);
check_fchmod("check_fchmod_dir", dir_path, PERM_DIR, dir_modes,
dir_modes_count);
check_fchmod("check_fchmod_file", file_path, PERM_FILE, file_modes,
file_modes_count);
check_fchown("check_fchown_dir", dir_path, dir_modes,
dir_modes_count);
check_fchown("check_fchown_file", file_path, file_modes,
file_modes_count);
check_flock("check_flock_dir", dir_path, dir_modes, dir_modes_count);
check_flock("check_flock_file", file_path, file_modes,
file_modes_count);
check_fpathconf("check_fpathconf_dir", dir_path, dir_modes,
dir_modes_count);
check_fpathconf("check_fpathconf_file", file_path, file_modes,
file_modes_count);
check_fstat("check_fstat_dir", dir_path, dir_modes, dir_modes_count);
check_fstat("check_fstat_file", file_path, file_modes,
file_modes_count);
check_fstatfs("check_fstatfs_dir", dir_path, dir_modes,
dir_modes_count);
check_fstatfs("check_fstatfs_file", file_path, file_modes,
file_modes_count);
check_fsync("check_fsync_dir", dir_path, dir_modes, dir_modes_count);
check_fsync("check_fsync_file", file_path, file_modes,
file_modes_count);
check_ftruncate("check_ftruncate_dir", dir_path, dir_modes,
dir_modes_count);
check_ftruncate("check_ftruncate_file", file_path, file_modes,
file_modes_count);
check_futimes("check_futimes_dir", dir_path, dir_modes,
dir_modes_count);
check_futimes("check_futimes_file", file_path, file_modes,
file_modes_count);
check_lseek("check_lseek_dir", dir_path, dir_modes, dir_modes_count);
check_lseek("check_lseek_file", file_path, file_modes,
file_modes_count);
check_getdents("check_getdents_dir", dir_path, 1, dir_modes,
dir_modes_count);
check_getdents("check_getdents_file", file_path, 0, file_modes,
file_modes_count);
check_sendfile("check_sendfile_dir", dir_path, 1, dir_modes,
dir_modes_count);
check_sendfile("check_sendfile_file", file_path, 0, file_modes,
file_modes_count);
check_write("check_write_dir", write, dir_path, dir_modes,
dir_modes_count);
check_write("check_write_file", write, file_path, file_modes,
file_modes_count);
check_write("check_writev_dir", writev_wrapper, dir_path, dir_modes,
dir_modes_count);
check_write("check_writev_file", writev_wrapper, file_path,
file_modes, file_modes_count);
check_write("check_pwrite_dir", pwrite_wrapper, dir_path, dir_modes,
dir_modes_count);
check_write("check_pwrite_file", pwrite_wrapper, file_path,
file_modes, file_modes_count);
check_write("check_pwritev_dir", pwritev_wrapper, dir_path,
dir_modes, dir_modes_count);
check_write("check_pwritev_file", pwritev_wrapper, file_path,
file_modes, file_modes_count);
if (aio_present) {
check_write("check_aio_write_dir", aio_write_wrapper,
dir_path, dir_modes, dir_modes_count);
check_write("check_aio_write_file", aio_write_wrapper,
file_path, file_modes, file_modes_count);
}
check_read("check_read_dir", read, dir_path, dir_modes,
dir_modes_count);
check_read("check_read_file", read, file_path, file_modes,
file_modes_count);
check_read("check_readv_dir", readv_wrapper, dir_path, dir_modes,
dir_modes_count);
check_read("check_readv_file", readv_wrapper, file_path,
file_modes, file_modes_count);
check_read("check_pread_dir", pread_wrapper, dir_path, dir_modes,
dir_modes_count);
check_read("check_pread_file", pread_wrapper, file_path,
file_modes, file_modes_count);
check_read("check_preadv_dir", preadv_wrapper, dir_path,
dir_modes, dir_modes_count);
check_read("check_preadv_file", preadv_wrapper, file_path,
file_modes, file_modes_count);
if (aio_present) {
check_read("check_aio_read_dir", aio_read_wrapper, dir_path,
dir_modes, dir_modes_count);
check_read("check_aio_read_file", aio_read_wrapper,
file_path, file_modes, file_modes_count);
}
check_mmap_read("check_mmap_read_dir", dir_path, 1, dir_modes,
dir_modes_count);
check_mmap_read("check_mmap_read_file", file_path, 0, file_modes,
file_modes_count);
check_mmap_write("check_mmap_write_dir", dir_path, dir_modes,
dir_modes_count);
check_mmap_write("check_mmap_write_file", file_path, file_modes,
file_modes_count);
check_mmap_exec("check_mmap_exec_dir", dir_path, 1, dir_modes,
dir_modes_count);
check_mmap_exec("check_mmap_exec_file", file_path, 0, file_modes,
file_modes_count);
check_mmap_write_private("check_mmap_write_private_dir", dir_path, 1,
dir_modes, dir_modes_count);
check_mmap_write_private("check_mmap_write_private_file", file_path,
0, file_modes, file_modes_count);
(void)unlink(file_path);
(void)rmdir(dir_path);
exit(0);
}
plain