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Implement getcwd() for XNU

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This commit is contained in:
Justine Tunney
2021-01-30 08:54:12 -08:00
parent 417797d218
commit 95173645a1
17 changed files with 239 additions and 77 deletions
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2
libc/str/bcmp.c
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@@ -24,7 +24,7 @@
* This API was thought to be nearly extinct until recent versions
* of Clang (c. 2019) started generating synthetic calls to it.
*
* @return unsigned char subtraction at stop index
* @return 0 if a and b have equal contents, otherwise non-zero
* @asyncsignalsafe
*/
int bcmp(const void *a, const void *b, size_t n) {

4
libc/str/str.h
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@@ -151,11 +151,13 @@ int strcasecmpzbw(const uint16_t *, const char *) strlenesque;
char *stpcpy(char *, const char *) memcpyesque;
char *stpncpy(char *, const char *, size_t) memcpyesque;
char *strcat(char *, const char *) memcpyesque;
char16_t *strcat16(char16_t *, const char16_t *);
char16_t *strcat16(char16_t *, const char16_t *) memcpyesque;
wchar_t *wcscat(wchar_t *, const wchar_t *) memcpyesque;
size_t strlcpy(char *, const char *, size_t);
size_t strlcat(char *, const char *, size_t);
char *strcpy(char *, const char *) memcpyesque;
char16_t *strcpy16(char16_t *, const char16_t *) memcpyesque;
wchar_t *wcscpy(wchar_t *, const wchar_t *) memcpyesque;
char *strncat(char *, const char *, size_t) memcpyesque;
char *strncpy(char *, const char *, size_t) memcpyesque;
char *strtok(char *, const char *) paramsnonnull((2)) libcesque;

1
libc/str/strcpy.c
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@@ -18,7 +18,6 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/intrin/pcmpeqb.h"
#include "libc/intrin/pmovmskb.h"
#include "libc/limits.h"
#include "libc/str/str.h"
/**

2
libc/str/strcpy16.c
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@@ -28,5 +28,5 @@
* @return original dest
*/
char16_t *strcpy16(char16_t *dest, const char16_t *src) {
return memcpy(dest, src, (strlen16(src) + 1) << 1);
return memcpy(dest, src, (strlen16(src) + 1) * sizeof(char16_t));
}

31
libc/str/wcscat.c Normal file
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@@ -0,0 +1,31 @@
/*-*- 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/str/str.h"
/**
* Appends 𝑠 to 𝑑.
*
* @param 𝑑 is a NUL-terminated 32-bit string
* @param 𝑠 is a NUL-terminated 32-bit string
* @return 𝑑
* @asyncsignalsafe
*/
wchar_t *wcscat(wchar_t *d, const wchar_t *s) {
return wcscpy(d + wcslen(d), s);
}

33
libc/str/wcscpy.c Normal file
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@@ -0,0 +1,33 @@
/*-*- 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/str/str.h"
/**
* Copies NUL-terminated wide character string.
*
* 𝑑 and 𝑠 must not overlap unless 𝑑 ≤ 𝑠.
*
* @param 𝑑 is destination memory
* @param 𝑠 is a NUL-terminated string
* @return original dest
* @asyncsignalsafe
*/
wchar_t *wcscpy(wchar_t *d, const wchar_t *s) {
return memcpy(d, s, (wcslen(s) + 1) * sizeof(wchar_t));
}