mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-08 15:33:33 +00:00
ebf784d4f5
- Introduce ualarm() function - Make rename() report EISEMPTY on Windows - Always raise EINVAL upon open(O_RDONLY|O_TRUNC) - Add macro so ./configure will detect SOCK_CLOEXEC - Fix O_TRUNC without O_CREAT not working on Windows - Let fcntl(F_SETFL) change O_APPEND status on Windows - Make sure pwrite() / pread() report ESPIPE on sockets - Raise ESPIPE on Windows when pwrite() is used on pipe - Properly compute O_APPEND CreateFile() flags on Windows - Don't require O_DIRECTORY to open directories on Windows - Fix more instances of Windows reporting EISDIR and ENOTDIR - Normalize EFTYPE and EMLINK to ELOOP on NetBSD and FreeBSD - Make unlink() / rmdir() work on read-only files on Windows - Validate UTF-8 on Windows paths to fix bug with overlong NUL - Always print signal name to stderr when crashing due to SIG_DFL - Fix Windows bug where denormalized paths >260 chars didn't work - Block signals on BSDs when thread exits before trashing its own stack
51 lines
3.1 KiB
C
51 lines
3.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/internal.h"
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#include "libc/calls/syscall_support-nt.internal.h"
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#include "libc/intrin/strace.internal.h"
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#include "libc/macros.internal.h"
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#include "libc/nt/files.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/at.h"
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#include "libc/sysv/errfuns.h"
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int __mkntpathat(int dirfd, const char *path, int flags,
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char16_t file[hasatleast PATH_MAX]) {
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char16_t dir[PATH_MAX];
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uint32_t dirlen, filelen;
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if (!isutf8(path, -1)) return eilseq(); // thwart overlong nul in conversion
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if ((filelen = __mkntpath2(path, file, flags)) == -1) return -1;
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if (!filelen) return enoent();
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if (file[0] != u'\\' && dirfd != AT_FDCWD) { // ProTip: \\?\C:\foo
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if (!__isfdkind(dirfd, kFdFile)) return ebadf();
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dirlen = GetFinalPathNameByHandle(g_fds.p[dirfd].handle, dir, ARRAYLEN(dir),
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kNtFileNameNormalized | kNtVolumeNameDos);
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if (!dirlen) return __winerr();
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if (dirlen + 1 + filelen + 1 > ARRAYLEN(dir)) {
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STRACE("path too long: %#.*hs\\%#.*hs", dirlen, dir, filelen, file);
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return enametoolong();
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}
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dir[dirlen] = u'\\';
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memcpy(dir + dirlen + 1, file, (filelen + 1) * sizeof(char16_t));
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memcpy(file, dir, (dirlen + 1 + filelen + 1) * sizeof(char16_t));
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return dirlen + 1 + filelen;
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} else {
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return filelen;
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}
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}
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