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Make some small fixes to recent changes

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Justine Tunney 2022-11-03 05:45:33 -07:00
parent c2590cf7a0
commit 179e048bba
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GPG key ID: BE714B4575D6E328
5 changed files with 33 additions and 11 deletions
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22
test/libc/calls/fexecve_test.c
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@ -18,11 +18,14 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/runtime/runtime.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/mfd.h"
#include "libc/sysv/consts/o.h"
#include "libc/testlib/subprocess.h"
#include "libc/testlib/testlib.h"
// clang-format off
int fds[2];
char buf[8];
@ -64,3 +67,22 @@ TEST(fexecve, elfIsUnreadable_mayBeExecuted) {
ASSERT_SYS(0, 0, close(3));
ASSERT_STREQ("hi\n", buf);
}
TEST(fexecve, memfd_create) {
if (!IsLinux()) return;
SPAWN(vfork);
#define TINY_ELF_PROGRAM "\
\177\105\114\106\002\001\001\000\000\000\000\000\000\000\000\000\
\002\000\076\000\001\000\000\000\170\000\100\000\000\000\000\000\
\100\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
\000\000\000\000\100\000\070\000\001\000\000\000\000\000\000\000\
\001\000\000\000\005\000\000\000\000\000\000\000\000\000\000\000\
\000\000\100\000\000\000\000\000\000\000\100\000\000\000\000\000\
\200\000\000\000\000\000\000\000\200\000\000\000\000\000\000\000\
\000\020\000\000\000\000\000\000\152\052\137\152\074\130\017\005"
int fd = memfd_create("foo", MFD_CLOEXEC);
if (fd == -1 && errno == ENOSYS) _Exit(42);
write(fd, TINY_ELF_PROGRAM, sizeof(TINY_ELF_PROGRAM) - 1);
fexecve(fd, (char *const[]){0}, (char *const[]){0});
EXITS(42);
}

3
test/libc/calls/test.mk
View file

@ -126,6 +126,9 @@ o/$(MODE)/test/libc/calls/lock_ofd_test.com.runs: \
o/$(MODE)/test/libc/calls/openbsd_test.com.runs: \
private .PLEDGE = stdio rpath wpath cpath fattr proc unveil
o/$(MODE)/test/libc/calls/fexecve_test.com.runs: \
private .UNSANDBOXED = 1 # for memfd_create()
o/$(MODE)/test/libc/calls/read_test.com.runs: \
private .UNVEIL += /dev/zero