Index: head/tests/sys/vfs/lookup_cap_dotdot.c =================================================================== --- head/tests/sys/vfs/lookup_cap_dotdot.c (revision 310993) +++ head/tests/sys/vfs/lookup_cap_dotdot.c (revision 310994) @@ -1,251 +1,313 @@ /*- * Copyright (c) 2016 Ed Maste * Copyright (c) 2016 Conrad Meyer * * 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 __FBSDID("$FreeBSD$"); #include #include #include #include +#include #include +#include #include #include #include #include "freebsd_test_suite/macros.h" -static int dirfd = -1; -static char *abspath; +static char *abspath; +static int dirfd = -1; +typedef void (*child_test_fn_t)(void); + static void -touchat(int dirfd, const char *name) +touchat(int _dirfd, const char *name) { int fd; - ATF_REQUIRE((fd = openat(dirfd, name, O_CREAT | O_TRUNC | O_WRONLY, + ATF_REQUIRE((fd = openat(_dirfd, name, O_CREAT | O_TRUNC | O_WRONLY, 0777)) >= 0); ATF_REQUIRE(close(fd) == 0); } static void prepare_dotdot_tests(void) { char cwd[MAXPATHLEN]; ATF_REQUIRE(getcwd(cwd, sizeof(cwd)) != NULL); asprintf(&abspath, "%s/testdir/d1/f1", cwd); ATF_REQUIRE(mkdir("testdir", 0777) == 0); ATF_REQUIRE((dirfd = open("testdir", O_RDONLY)) >= 0); ATF_REQUIRE(mkdirat(dirfd, "d1", 0777) == 0); ATF_REQUIRE(mkdirat(dirfd, "d1/d2", 0777) == 0); ATF_REQUIRE(mkdirat(dirfd, "d1/d2/d3", 0777) == 0); touchat(dirfd, "d1/f1"); touchat(dirfd, "d1/d2/f2"); touchat(dirfd, "d1/d2/d3/f3"); ATF_REQUIRE(symlinkat("d1/d2/d3", dirfd, "l3") == 0); ATF_REQUIRE(symlinkat("../testdir/d1", dirfd, "lup") == 0); ATF_REQUIRE(symlinkat("../..", dirfd, "d1/d2/d3/ld1") == 0); ATF_REQUIRE(symlinkat("../../f1", dirfd, "d1/d2/d3/lf1") == 0); } static void check_capsicum(void) { + ATF_REQUIRE_FEATURE("security_capabilities"); ATF_REQUIRE_FEATURE("security_capability_mode"); } +static void +run_capsicum_test(child_test_fn_t test_func) +{ + int child_exit_code, child_status; + pid_t child_pid; + + check_capsicum(); + prepare_dotdot_tests(); + + ATF_REQUIRE_MSG((child_pid = fork()) != -1, + "fork failed: %s", strerror(errno)); + + if (child_pid == 0) { + test_func(); + _exit(0); + } + + ATF_REQUIRE_MSG(waitpid(child_pid, &child_status, 0) != -1, + "waitpid failed: %s", strerror(errno)); + if (WIFEXITED(child_status)) { + child_exit_code = WEXITSTATUS(child_status); + ATF_REQUIRE_MSG(child_exit_code == 0, + "child exited with non-zero exit code: %d", + child_exit_code); + } else if (WIFSIGNALED(child_status)) + atf_tc_fail("child exited with signal: %d", + WTERMSIG(child_status)); + else + atf_tc_fail("child exited with unexpected status: %d", + child_status); +} + /* * Positive tests */ ATF_TC(openat__basic_positive); ATF_TC_HEAD(openat__basic_positive, tc) { atf_tc_set_md_var(tc, "descr", "Basic positive openat testcases"); } ATF_TC_BODY(openat__basic_positive, tc) { + prepare_dotdot_tests(); ATF_REQUIRE(openat(dirfd, "d1/d2/d3/f3", O_RDONLY) >= 0); ATF_REQUIRE(openat(dirfd, "d1/d2/d3/../../f1", O_RDONLY) >= 0); ATF_REQUIRE(openat(dirfd, "l3/f3", O_RDONLY) >= 0); ATF_REQUIRE(openat(dirfd, "l3/../../f1", O_RDONLY) >= 0); ATF_REQUIRE(openat(dirfd, "../testdir/d1/f1", O_RDONLY) >= 0); ATF_REQUIRE(openat(dirfd, "lup/f1", O_RDONLY) >= 0); ATF_REQUIRE(openat(dirfd, "l3/ld1", O_RDONLY) >= 0); ATF_REQUIRE(openat(dirfd, "l3/lf1", O_RDONLY) >= 0); ATF_REQUIRE(open(abspath, O_RDONLY) >= 0); ATF_REQUIRE(openat(dirfd, abspath, O_RDONLY) >= 0); } ATF_TC(lookup_cap_dotdot__basic); ATF_TC_HEAD(lookup_cap_dotdot__basic, tc) { atf_tc_set_md_var(tc, "descr", "Validate cap-mode (testdir)/d1/.. lookup"); } -ATF_TC_BODY(lookup_cap_dotdot__basic, tc) +static void +lookup_cap_dotdot__basic_child(void) { cap_rights_t rights; - int fd; - check_capsicum(); - prepare_dotdot_tests(); - cap_rights_init(&rights, CAP_LOOKUP, CAP_READ); - ATF_REQUIRE(cap_rights_limit(dirfd, &rights) >= 0); - ATF_REQUIRE(cap_enter() >= 0); + assert(cap_rights_limit(dirfd, &rights) >= 0); + assert(cap_enter() >= 0); + assert(openat(dirfd, "d1/..", O_RDONLY) >= 0); +} - ATF_REQUIRE_MSG(openat(dirfd, "d1/..", O_RDONLY) >= 0, "%s", - strerror(errno)); +ATF_TC_BODY(lookup_cap_dotdot__basic, tc) +{ + + run_capsicum_test(lookup_cap_dotdot__basic_child); } ATF_TC(lookup_cap_dotdot__advanced); ATF_TC_HEAD(lookup_cap_dotdot__advanced, tc) { atf_tc_set_md_var(tc, "descr", "Validate cap-mode (testdir)/d1/.. lookup"); } -ATF_TC_BODY(lookup_cap_dotdot__advanced, tc) +static void +lookup_cap_dotdot__advanced_child(void) { cap_rights_t rights; - int fd; - check_capsicum(); - prepare_dotdot_tests(); - cap_rights_init(&rights, CAP_LOOKUP, CAP_READ); - ATF_REQUIRE(cap_rights_limit(dirfd, &rights) >= 0); + assert(cap_rights_limit(dirfd, &rights) >= 0); - ATF_REQUIRE(cap_enter() >= 0); + assert(cap_enter() >= 0); - ATF_REQUIRE(openat(dirfd, "d1/d2/d3/../../f1", O_RDONLY) >= 0); - ATF_REQUIRE(openat(dirfd, "l3/../../f1", O_RDONLY) >= 0); - ATF_REQUIRE(openat(dirfd, "l3/ld1", O_RDONLY) >= 0); - ATF_REQUIRE(openat(dirfd, "l3/lf1", O_RDONLY) >= 0); + assert(openat(dirfd, "d1/d2/d3/../../f1", O_RDONLY) >= 0); + assert(openat(dirfd, "l3/../../f1", O_RDONLY) >= 0); + assert(openat(dirfd, "l3/ld1", O_RDONLY) >= 0); + assert(openat(dirfd, "l3/lf1", O_RDONLY) >= 0); } +ATF_TC_BODY(lookup_cap_dotdot__advanced, tc) +{ + + run_capsicum_test(lookup_cap_dotdot__advanced_child); +} + /* * Negative tests */ ATF_TC(openat__basic_negative); ATF_TC_HEAD(openat__basic_negative, tc) { atf_tc_set_md_var(tc, "descr", "Basic negative openat testcases"); } ATF_TC_BODY(openat__basic_negative, tc) { + prepare_dotdot_tests(); ATF_REQUIRE_ERRNO(ENOENT, openat(dirfd, "does-not-exist", O_RDONLY) < 0); ATF_REQUIRE_ERRNO(ENOENT, openat(dirfd, "l3/does-not-exist", O_RDONLY) < 0); } ATF_TC(capmode__negative); ATF_TC_HEAD(capmode__negative, tc) { atf_tc_set_md_var(tc, "descr", "Negative Capability mode testcases"); } -ATF_TC_BODY(capmode__negative, tc) +static void +capmode__negative_child(void) { int subdirfd; - check_capsicum(); - prepare_dotdot_tests(); + assert(cap_enter() == 0); - ATF_REQUIRE(cap_enter() == 0); - /* open() not permitted in capability mode */ - ATF_REQUIRE_ERRNO(ECAPMODE, open("testdir", O_RDONLY) < 0); + assert(open("testdir", O_RDONLY) < 0); + assert(errno == ECAPMODE); /* AT_FDCWD not permitted in capability mode */ - ATF_REQUIRE_ERRNO(ECAPMODE, openat(AT_FDCWD, "d1/f1", O_RDONLY) < 0); + assert(openat(AT_FDCWD, "d1/f1", O_RDONLY) < 0); + assert(errno == ECAPMODE); /* Relative path above dirfd not capable */ - ATF_REQUIRE_ERRNO(ENOTCAPABLE, openat(dirfd, "..", O_RDONLY) < 0); - ATF_REQUIRE((subdirfd = openat(dirfd, "l3", O_RDONLY)) >= 0); - ATF_REQUIRE_ERRNO(ENOTCAPABLE, - openat(subdirfd, "../../f1", O_RDONLY) < 0); + assert(openat(dirfd, "..", O_RDONLY) < 0); + assert(errno == ENOTCAPABLE); + assert((subdirfd = openat(dirfd, "l3", O_RDONLY)) >= 0); + assert(openat(subdirfd, "../../f1", O_RDONLY) < 0); + assert(errno == ENOTCAPABLE); + (void)close(subdirfd); + /* Absolute paths not capable */ - ATF_REQUIRE_ERRNO(ENOTCAPABLE, openat(dirfd, abspath, O_RDONLY) < 0); + assert(openat(dirfd, abspath, O_RDONLY) < 0); + assert(errno == ENOTCAPABLE); /* Symlink above dirfd */ - ATF_REQUIRE_ERRNO(ENOTCAPABLE, openat(dirfd, "lup/f1", O_RDONLY) < 0); + assert(openat(dirfd, "lup/f1", O_RDONLY) < 0); + assert(errno == ENOTCAPABLE); } +ATF_TC_BODY(capmode__negative, tc) +{ + + run_capsicum_test(capmode__negative_child); +} + ATF_TC(lookup_cap_dotdot__negative); ATF_TC_HEAD(lookup_cap_dotdot__negative, tc) { atf_tc_set_md_var(tc, "descr", "Validate cap-mode (testdir)/.. lookup fails"); } -ATF_TC_BODY(lookup_cap_dotdot__negative, tc) +static void +lookup_cap_dotdot__negative_child(void) { cap_rights_t rights; - int fd; - check_capsicum(); - prepare_dotdot_tests(); - cap_rights_init(&rights, CAP_LOOKUP, CAP_READ); - ATF_REQUIRE(cap_rights_limit(dirfd, &rights) >= 0); + assert(cap_rights_limit(dirfd, &rights) >= 0); - ATF_REQUIRE(cap_enter() >= 0); + assert(cap_enter() >= 0); - ATF_REQUIRE_ERRNO(ENOTCAPABLE, openat(dirfd, "..", O_RDONLY) < 0); - ATF_REQUIRE_ERRNO(ENOTCAPABLE, openat(dirfd, "d1/../..", O_RDONLY) < 0); - ATF_REQUIRE_ERRNO(ENOTCAPABLE, openat(dirfd, "../testdir/d1/f1", O_RDONLY) < 0); + assert(openat(dirfd, "..", O_RDONLY) < 0); + assert(errno == ENOTCAPABLE); + + assert(openat(dirfd, "d1/../..", O_RDONLY) < 0); + assert(errno == ENOTCAPABLE); + + assert(openat(dirfd, "../testdir/d1/f1", O_RDONLY) < 0); + assert(errno == ENOTCAPABLE); +} + +ATF_TC_BODY(lookup_cap_dotdot__negative, tc) +{ + + run_capsicum_test(lookup_cap_dotdot__negative_child); } ATF_TP_ADD_TCS(tp) { ATF_TP_ADD_TC(tp, openat__basic_positive); ATF_TP_ADD_TC(tp, openat__basic_negative); ATF_TP_ADD_TC(tp, capmode__negative); ATF_TP_ADD_TC(tp, lookup_cap_dotdot__basic); ATF_TP_ADD_TC(tp, lookup_cap_dotdot__advanced); ATF_TP_ADD_TC(tp, lookup_cap_dotdot__negative); return (atf_no_error()); }