cosmopolitan/test/libc/calls/fexecve_test.c
Justine Tunney f531acc8f9
Make improvements
- Invent openatemp() API
- Invent O_UNLINK open flag
- Introduce getenv_secure() API
- Remove `git pull` from cosmocc
- Fix utimes() when path is NULL
- Fix mktemp() to never return NULL
- Fix utimensat() UTIME_OMIT on XNU
- Improve utimensat() code for RHEL5
- Turn `argv[0]` C:/ to /C/ on Windows
- Introduce tmpnam() and tmpnam_r() APIs
- Fix more const issues with internal APIs
- Permit utimes() on WIN32 in O_RDONLY mode
- Fix fdopendir() to check fd is a directory
- Fix recent crash regression in landlock make
- Fix futimens(AT_FDCWD, NULL) to return EBADF
- Use workaround so `make -j` doesn't fork bomb
- Rename dontdiscard to __wur (just like glibc)
- Fix st_size for WIN32 symlinks containing UTF-8
- Introduce stdio ext APIs needed by GNU coreutils
- Fix lstat() on WIN32 for symlinks to directories
- Move some constants from normalize.inc to limits.h
- Fix segv with memchr() and memcmp() overlapping page
- Implement POSIX fflush() behavior for reader streams
- Implement AT_SYMLINK_NOFOLLOW for utimensat() on WIN32
- Don't change read-only status of existing files on WIN32
- Correctly handle `0x[^[:xdigit:]]` case in strtol() functions
2023-09-06 12:34:59 -07:00

153 lines
5.8 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#if 0 // TODO(G4Vi): improve reliability of fexecve() implementation
#include "libc/calls/calls.h"
#include "libc/calls/syscall_support-sysv.internal.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
__static_yoink("zipos");
int fds[2];
char buf[8];
char testlib_enable_tmp_setup_teardown;
void SetUp(void) {
if (IsFreebsd()) exit(0); // TODO: fixme on freebsd
if (IsLinux() && !__is_linux_2_6_23()) exit(0); // TODO: fixme on old linux
}
TEST(execve, elfIsUnreadable_mayBeExecuted) {
if (IsWindows() || IsXnu()) return;
testlib_extract("/zip/echo", "echo", 0111);
ASSERT_SYS(0, 0, pipe2(fds, O_CLOEXEC));
SPAWN(vfork);
ASSERT_SYS(0, 1, dup2(4, 1));
ASSERT_SYS(
0, 0,
execve("echo", (char *const[]){"echo", "hi", 0}, (char *const[]){0}));
notpossible;
EXITS(0);
bzero(buf, 8);
ASSERT_SYS(0, 0, close(4));
ASSERT_SYS(0, 3, read(3, buf, 7));
ASSERT_SYS(0, 0, close(3));
ASSERT_STREQ("hi\n", buf);
}
TEST(fexecve, elfIsUnreadable_mayBeExecuted) {
if (!IsLinux() && !IsFreebsd()) return;
testlib_extract("/zip/echo", "echo", 0111);
ASSERT_SYS(0, 0, pipe2(fds, O_CLOEXEC));
SPAWN(vfork);
ASSERT_SYS(0, 1, dup2(4, 1));
ASSERT_SYS(0, 5, open("echo", O_EXEC | O_CLOEXEC));
if (IsFreebsd()) ASSERT_SYS(0, 1, lseek(5, 1, SEEK_SET));
ASSERT_SYS(0, 0,
fexecve(5, (char *const[]){"echo", "hi", 0}, (char *const[]){0}));
notpossible;
EXITS(0);
bzero(buf, 8);
ASSERT_SYS(0, 0, close(4));
ASSERT_SYS(0, 3, read(3, buf, 7));
ASSERT_SYS(0, 0, close(3));
ASSERT_STREQ("hi\n", buf);
}
TEST(fexecve, memfd_create) {
if (1) return; // TODO: fixme
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);
}
TEST(fexecve, APE) {
if (!IsLinux() && !IsFreebsd()) return;
testlib_extract("/zip/life-nomod.com", "life-nomod.com", 0555);
SPAWN(fork);
int fd = open("life-nomod.com", O_RDONLY);
ASSERT_NE(-1, fd);
fexecve(fd, (char *const[]){0}, (char *const[]){0});
EXITS(42);
}
TEST(fexecve, APE_cloexec) {
if (!IsLinux() && !IsFreebsd()) return;
testlib_extract("/zip/life-nomod.com", "life-nomod.com", 0555);
SPAWN(fork);
int fd = open("life-nomod.com", O_RDONLY | O_CLOEXEC);
ASSERT_NE(-1, fd);
fexecve(fd, (char *const[]){0}, (char *const[]){0});
EXITS(42);
}
TEST(fexecve, zipos) {
if (!IsLinux() && !IsFreebsd()) return;
int fd = open("/zip/life.elf", O_RDONLY);
ASSERT_NE(-1, fd);
SPAWN(fork);
fexecve(fd, (char *const[]){0}, (char *const[]){0});
EXITS(42);
close(fd);
}
TEST(fexecve, ziposAPE) {
if (!IsLinux() && !IsFreebsd()) return;
int fd = open("/zip/life-nomod.com", O_RDONLY);
ASSERT_NE(-1, fd);
SPAWN(fork);
fexecve(fd, (char *const[]){0}, (char *const[]){0});
EXITS(42);
close(fd);
}
TEST(fexecve, ziposAPEHasZipos) {
if (1) return; // TODO: fixme
if (!IsLinux() && !IsFreebsd()) return;
int fd = open("/zip/zipread.com", O_RDONLY);
ASSERT_NE(-1, fd);
SPAWN(fork);
ASSERT_NE(-1, fd);
if (fd == -1 && errno == ENOSYS) _Exit(42);
fexecve(fd, (char *const[]){0}, (char *const[]){0});
EXITS(42);
close(fd);
}
#endif