mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-03-01 14:38:29 +00:00
7e0a09feec
This change ports APE Loader to Linux AARCH64, so that Raspberry Pi users can run programs like redbean, without the executable needing to modify itself. Progress has also slipped into this change on the issue of making progress better conforming to user expectations and industry standards regarding which symbols we're allowed to declare
109 lines
4.8 KiB
C
109 lines
4.8 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 2020 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. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/assert.h"
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/internal.h"
|
|
#include "libc/calls/sig.internal.h"
|
|
#include "libc/calls/struct/iovec.internal.h"
|
|
#include "libc/calls/syscall_support-nt.internal.h"
|
|
#include "libc/errno.h"
|
|
#include "libc/intrin/strace.internal.h"
|
|
#include "libc/intrin/weaken.h"
|
|
#include "libc/macros.internal.h"
|
|
#include "libc/nt/errors.h"
|
|
#include "libc/nt/files.h"
|
|
#include "libc/nt/runtime.h"
|
|
#include "libc/nt/struct/overlapped.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/sysv/consts/sicode.h"
|
|
#include "libc/sysv/consts/sig.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
static textwindows ssize_t sys_write_nt_impl(int fd, void *data, size_t size,
|
|
ssize_t offset) {
|
|
|
|
// perform the write i/o operation
|
|
bool32 ok;
|
|
uint32_t sent;
|
|
int64_t handle;
|
|
handle = g_fds.p[fd].handle;
|
|
size = MIN(size, 0x7ffff000);
|
|
if (offset == -1) {
|
|
// perform simple blocking write
|
|
ok = WriteFile(handle, data, size, &sent, 0);
|
|
} else {
|
|
// perform pwrite()-style write at particular file offset
|
|
int64_t position;
|
|
// save file pointer which windows clobbers, even for overlapped i/o
|
|
if (!SetFilePointerEx(handle, 0, &position, SEEK_CUR)) {
|
|
return __winerr(); // fd probably isn't seekable?
|
|
}
|
|
struct NtOverlapped overlap = {0};
|
|
overlap.Pointer = (void *)(uintptr_t)offset;
|
|
ok = WriteFile(handle, data, size, 0, &overlap);
|
|
if (!ok && GetLastError() == kNtErrorIoPending) ok = true;
|
|
if (ok) ok = GetOverlappedResult(handle, &overlap, &sent, true);
|
|
// restore file pointer which windows clobbers, even on error
|
|
unassert(SetFilePointerEx(handle, position, 0, SEEK_SET));
|
|
}
|
|
if (ok) {
|
|
return sent;
|
|
}
|
|
|
|
switch (GetLastError()) {
|
|
// case kNtErrorInvalidHandle:
|
|
// return ebadf(); /* handled by consts.sh */
|
|
// case kNtErrorNotEnoughQuota:
|
|
// return edquot(); /* handled by consts.sh */
|
|
case kNtErrorBrokenPipe: // broken pipe
|
|
case kNtErrorNoData: // closing named pipe
|
|
if (_weaken(__sig_raise)) {
|
|
_weaken(__sig_raise)(SIGPIPE, SI_KERNEL);
|
|
return epipe();
|
|
} else {
|
|
STRACE("broken pipe");
|
|
_Exitr(128 + EPIPE);
|
|
}
|
|
case kNtErrorAccessDenied: // write doesn't return EACCESS
|
|
return ebadf();
|
|
default:
|
|
return __winerr();
|
|
}
|
|
}
|
|
|
|
textwindows ssize_t sys_write_nt(int fd, const struct iovec *iov, size_t iovlen,
|
|
ssize_t opt_offset) {
|
|
ssize_t rc;
|
|
size_t i, total;
|
|
if (opt_offset < -1) return einval();
|
|
while (iovlen && !iov[0].iov_len) iov++, iovlen--;
|
|
if (iovlen) {
|
|
for (total = i = 0; i < iovlen; ++i) {
|
|
if (!iov[i].iov_len) continue;
|
|
rc = sys_write_nt_impl(fd, iov[i].iov_base, iov[i].iov_len, opt_offset);
|
|
if (rc == -1) return -1;
|
|
total += rc;
|
|
if (opt_offset != -1) opt_offset += rc;
|
|
if (rc < iov[i].iov_len) break;
|
|
}
|
|
return total;
|
|
} else {
|
|
return sys_write_nt_impl(fd, NULL, 0, opt_offset);
|
|
}
|
|
}
|