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Add /dev/(u)random on NT (#1163)

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Gavin Hayes 2024-05-03 10:59:51 -04:00 • committed by GitHub
parent 8f6bc9dabc
commit b6e40a3a58
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GPG key ID: B5690EEEBB952194
17 changed files with 97 additions and 22 deletions
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3
libc/calls/fcntl-nt.c
View file

@ -332,7 +332,8 @@ textwindows int sys_fcntl_nt(int fd, int cmd, uintptr_t arg) {
if (__isfdkind(fd, kFdFile) || //
__isfdkind(fd, kFdSocket) || //
__isfdkind(fd, kFdConsole) || //
__isfdkind(fd, kFdDevNull)) {
__isfdkind(fd, kFdDevNull) || //
__isfdkind(fd, kFdDevRandom)) {
if (cmd == F_GETFL) {
rc = g_fds.p[fd].flags & (O_ACCMODE | _O_APPEND | _O_DIRECT |
_O_NONBLOCK | _O_RANDOM | _O_SEQUENTIAL);

1
libc/calls/fstat-nt.c
View file

@ -104,6 +104,7 @@ textwindows int sys_fstat_nt(int fd, struct stat *st) {
return ebadf();
case kFdConsole:
case kFdDevNull:
case kFdDevRandom:
return sys_fstat_nt_special(g_fds.p[fd].kind, st);
case kFdSocket:
return sys_fstat_nt_socket(g_fds.p[fd].kind, st);

2
libc/calls/fstatat-nt.c
View file

@ -59,6 +59,8 @@ textwindows int sys_fstatat_nt(int dirfd, const char *path, struct stat *st,
return sys_fstat_nt_special(kFdConsole, st);
} else if (!strcmp(path + 5, "null")) {
return sys_fstat_nt_special(kFdDevNull, st);
} else if (!strcmp(path + 5, "random") || !strcmp(path + 5, "urandom")) {
return sys_fstat_nt_special(kFdDevRandom, st);
} else if (!strcmp(path + 5, "stdin")) {
return sys_fstat_nt(STDIN_FILENO, st);
} else if (!strcmp(path + 5, "stdout")) {

9
libc/calls/ioctl.c
View file

@ -24,7 +24,6 @@
#include "libc/calls/termios.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/serialize.h"
#include "libc/intrin/cmpxchg.h"
#include "libc/intrin/strace.internal.h"
#include "libc/intrin/weaken.h"
@ -42,6 +41,7 @@
#include "libc/nt/winsock.h"
#include "libc/runtime/runtime.h"
#include "libc/runtime/stack.h"
#include "libc/serialize.h"
#include "libc/sock/internal.h"
#include "libc/sock/struct/ifconf.h"
#include "libc/sock/struct/ifreq.h"
@ -66,7 +66,7 @@ static struct HostAdapterInfoNode {
struct sockaddr netmask;
struct sockaddr broadcast;
short flags;
} *__hostInfo;
} * __hostInfo;
static int ioctl_default(int fd, unsigned long request, void *arg) {
int rc;
@ -107,8 +107,9 @@ static int ioctl_fionread(int fd, uint32_t *arg) {
*arg = MAX(0, bytes);
return 0;
} else if (g_fds.p[fd].kind == kFdDevNull) {
*arg = 1;
return 0;
return enotty();
} else if (g_fds.p[fd].kind == kFdDevRandom) {
return einval();
} else if (GetFileType(handle) == kNtFileTypePipe) {
uint32_t avail;
if (PeekNamedPipe(handle, 0, 0, 0, &avail, 0)) {

1
libc/calls/ischardev.c
View file

@ -55,6 +55,7 @@ bool32 ischardev(int fd) {
}
} else {
return __isfdkind(fd, kFdConsole) || __isfdkind(fd, kFdDevNull) ||
__isfdkind(fd, kFdDevRandom) ||
(__isfdkind(fd, kFdFile) &&
GetFileType(g_fds.p[fd].handle) == kNtFileTypeChar);
}

2
libc/calls/lseek-nt.c
View file

@ -62,7 +62,7 @@ static textwindows int64_t Seek(struct Fd *f, int64_t offset, int whence) {
}
textwindows int64_t sys_lseek_nt(int fd, int64_t offset, int whence) {
if (__isfdkind(fd, kFdDevNull)) {
if (__isfdkind(fd, kFdDevNull) || __isfdkind(fd, kFdDevRandom)) {
return offset;
} else if (__isfdkind(fd, kFdFile)) {
struct Fd *f = g_fds.p + fd;

11
libc/calls/open-nt.c
View file

@ -159,6 +159,15 @@ static textwindows int sys_open_nt_special(int fd, int flags, int mode,
return fd;
}
static textwindows int sys_open_nt_no_handle(int fd, int flags, int mode,
int kind) {
g_fds.p[fd].kind = kind;
g_fds.p[fd].mode = mode;
g_fds.p[fd].flags = flags;
g_fds.p[fd].handle = -1;
return fd;
}
static textwindows int sys_open_nt_dup(int fd, int flags, int mode, int oldfd) {
int64_t handle;
if (!__isfdopen(oldfd)) {
@ -211,6 +220,8 @@ textwindows int sys_open_nt(int dirfd, const char *file, uint32_t flags,
rc = sys_open_nt_special(fd, flags, mode, kFdConsole, u"CONIN$");
} else if (!strcmp(file + 5, "null")) {
rc = sys_open_nt_special(fd, flags, mode, kFdDevNull, u"NUL");
} else if (!strcmp(file + 5, "urandom") || !strcmp(file + 5, "random")) {
rc = sys_open_nt_no_handle(fd, flags, mode, kFdDevRandom);
} else if (!strcmp(file + 5, "stdin")) {
rc = sys_open_nt_dup(fd, flags, mode, STDIN_FILENO);
} else if (!strcmp(file + 5, "stdout")) {

3
libc/calls/pread.c
View file

@ -72,7 +72,8 @@ ssize_t pread(int fd, void *buf, size_t size, int64_t offset) {
rc = sys_pread(fd, buf, size, offset, offset);
} else if (__isfdkind(fd, kFdSocket)) {
rc = espipe();
} else if (__isfdkind(fd, kFdFile) || __isfdkind(fd, kFdDevNull)) {
} else if (__isfdkind(fd, kFdFile) || __isfdkind(fd, kFdDevNull) ||
__isfdkind(fd, kFdDevRandom)) {
rc = sys_read_nt(fd, (struct iovec[]){{buf, size}}, 1, offset);
} else {
rc = ebadf();

2
libc/calls/printfds.c
View file

@ -40,6 +40,8 @@ static const char *__fdkind2str(int x) {
return "kFdZip";
case kFdEpoll:
return "kFdEpoll";
case kFdDevRandom:
return "kFdRandom";
default:
return "kFdWut";
}

3
libc/calls/pwrite.c
View file

@ -65,7 +65,8 @@ ssize_t pwrite(int fd, const void *buf, size_t size, int64_t offset) {
rc = sys_pwrite(fd, buf, size, offset, offset);
} else if (__isfdkind(fd, kFdSocket)) {
rc = espipe();
} else if (__isfdkind(fd, kFdFile) || __isfdkind(fd, kFdDevNull)) {
} else if (__isfdkind(fd, kFdFile) || __isfdkind(fd, kFdDevNull) ||
__isfdkind(fd, kFdDevRandom)) {
rc = sys_write_nt(fd, (struct iovec[]){{(void *)buf, size}}, 1, offset);
} else {
return ebadf();

4
libc/calls/read-nt.c
View file

@ -786,6 +786,10 @@ textwindows ssize_t ReadBuffer(int fd, void *data, size_t size, int64_t offset,
return 0;
}
if (f->kind == kFdDevRandom) {
return ProcessPrng(data, size) ? size : __winerr();
}
if (f->kind == kFdConsole) {
return ReadFromConsole(f, data, size, waitmask);
}

1
libc/calls/readv-nt.c
View file

@ -29,6 +29,7 @@ textwindows ssize_t sys_readv_nt(int fd, const struct iovec *iov, int iovlen) {
case kFdFile:
case kFdConsole:
case kFdDevNull:
case kFdDevRandom:
return sys_read_nt(fd, iov, iovlen, -1);
case kFdSocket:
return _weaken(sys_recv_nt)(fd, iov, iovlen, 0);

2
libc/calls/readwrite-nt.c
View file

@ -61,7 +61,7 @@ sys_readwrite_nt(int fd, void *data, size_t size, ssize_t offset,
bool pwriting = offset != -1;
bool seekable =
(f->kind == kFdFile && GetFileType(handle) == kNtFileTypeDisk) ||
f->kind == kFdDevNull;
f->kind == kFdDevNull || f->kind == kFdDevRandom;
if (pwriting && !seekable) {
return espipe();
}

19
libc/calls/struct/fd.internal.h
View file

@ -2,15 +2,16 @@
#define COSMOPOLITAN_LIBC_CALLS_STRUCT_FD_INTERNAL_H_
COSMOPOLITAN_C_START_
#define kFdEmpty 0
#define kFdFile 1
#define kFdSocket 2
#define kFdConsole 4
#define kFdSerial 5
#define kFdZip 6
#define kFdEpoll 7
#define kFdReserved 8
#define kFdDevNull 9
#define kFdEmpty 0
#define kFdFile 1
#define kFdSocket 2
#define kFdConsole 4
#define kFdSerial 5
#define kFdZip 6
#define kFdEpoll 7
#define kFdReserved 8
#define kFdDevNull 9
#define kFdDevRandom 10
struct Fd {
char kind;

5
libc/calls/write-nt.c
View file

@ -52,6 +52,11 @@ static textwindows ssize_t sys_write_nt_impl(int fd, void *data, size_t size,
struct Fd *f = g_fds.p + fd;
bool isconsole = f->kind == kFdConsole;
// not implemented, XNU returns eperm();
if (f->kind == kFdDevRandom) {
return eperm();
}
// determine win32 handle for writing
int64_t handle = f->handle;
if (isconsole && _weaken(GetConsoleOutputHandle)) {

1
libc/calls/writev-nt.c
View file

@ -28,6 +28,7 @@ textwindows ssize_t sys_writev_nt(int fd, const struct iovec *iov, int iovlen) {
case kFdFile:
case kFdConsole:
case kFdDevNull:
case kFdDevRandom:
return sys_write_nt(fd, iov, iovlen, -1);
case kFdSocket:
return _weaken(sys_send_nt)(fd, iov, iovlen, 0);

50
test/libc/calls/specialfile_test.c
View file

@ -20,15 +20,19 @@
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/nt/files.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/f.h"
#include "libc/sysv/consts/o.h"
#include "libc/testlib/testlib.h"
int pipefd[2];
int stdoutBack;
int allowMask;
void SetUpOnce(void) {
testlib_enable_tmp_setup_teardown();
// qemu-aarch64 defines o_largefile wrong
allowMask = ~(O_LARGEFILE | 0x00008000);
}
void CaptureStdout(void) {
@ -46,8 +50,7 @@ void RestoreStdout(void) {
TEST(specialfile, devNull) {
ASSERT_SYS(0, 3, creat("/dev/null", 0644));
// qemu-aarch64 defines o_largefile wrong
ASSERT_EQ(O_WRONLY, fcntl(3, F_GETFL) & ~(O_LARGEFILE | 0x00008000));
ASSERT_EQ(O_WRONLY, fcntl(3, F_GETFL) & allowMask);
ASSERT_SYS(0, 2, write(3, "hi", 2));
ASSERT_SYS(0, 2, pwrite(3, "hi", 2, 0));
ASSERT_SYS(0, 2, pwrite(3, "hi", 2, 2));
@ -64,12 +67,51 @@ TEST(specialfile, devNull) {
TEST(specialfile, devNullRead) {
char buf[8] = {0};
ASSERT_SYS(0, 3, open("/dev/null", O_RDONLY));
// qemu-aarch64 defines o_largefile wrong
ASSERT_EQ(O_RDONLY, fcntl(3, F_GETFL) & ~(O_LARGEFILE | 0x00008000));
ASSERT_EQ(O_RDONLY, fcntl(3, F_GETFL) & allowMask);
ASSERT_SYS(0, 0, read(3, buf, 8));
ASSERT_SYS(0, 0, close(3));
}
TEST(specialfile, devRandomRead) {
char buf[8] = {0};
ASSERT_SYS(0, 3, open("/dev/random", O_RDONLY));
ASSERT_EQ(O_RDONLY, fcntl(3, F_GETFL) & allowMask);
ASSERT_SYS(0, 8, read(3, buf, 8));
ASSERT_NE(0, memcmp(buf, " ", 8));
ASSERT_SYS(0, 0, close(3));
}
TEST(specialfile, devUrandomRead) {
char buf[8] = {0};
ASSERT_SYS(0, 3, open("/dev/urandom", O_RDONLY));
ASSERT_EQ(O_RDONLY, fcntl(3, F_GETFL) & allowMask);
ASSERT_SYS(0, 8, read(3, buf, 8));
ASSERT_NE(0, memcmp(buf, " ", 8));
ASSERT_SYS(0, 0, close(3));
}
TEST(specialfile, devRandomWrite_fails_on_nt) {
if (!IsWindows()) {
return;
}
char buf[8] = {0};
ASSERT_SYS(0, 3, creat("/dev/random", 0644));
ASSERT_EQ(O_WRONLY, fcntl(3, F_GETFL) & allowMask);
ASSERT_SYS(EPERM, -1, write(3, buf, 8));
ASSERT_SYS(0, 0, close(3));
}
TEST(specialfile, devUrandomWrite_fails_on_nt) {
if (!IsWindows()) {
return;
}
char buf[8] = {0};
ASSERT_SYS(0, 3, creat("/dev/urandom", 0644));
ASSERT_EQ(O_WRONLY, fcntl(3, F_GETFL) & allowMask);
ASSERT_SYS(EPERM, -1, write(3, buf, 8));
ASSERT_SYS(0, 0, close(3));
}
TEST(specialfile, devStdout) {
char buf[8] = {8};
CaptureStdout();