mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
425ff5dff0
- Write tests for cthreads - Fix bugs in pe2.com tool - Fix ASAN issue with GetDosEnviron() - Consolidate the cthread header files - Some code size optimizations for MODE= - Attempted to squash a tls linker warning - Attempted to get futexes working on FreeBSD
69 lines
3.1 KiB
C
69 lines
3.1 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 2021 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/calls/calls.h"
|
|
#include "libc/calls/struct/metastat.internal.h"
|
|
#include "libc/calls/struct/stat.h"
|
|
#include "libc/calls/syscall-sysv.internal.h"
|
|
#include "libc/str/str.h"
|
|
#include "libc/sysv/consts/at.h"
|
|
#include "libc/sysv/consts/o.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
#define XNU_F_GETPATH 50
|
|
#define XNU_MAXPATHLEN 1024
|
|
|
|
static inline bool CopyString(char *d, const char *s, size_t n) {
|
|
size_t i;
|
|
for (i = 0; i < n; ++i) {
|
|
if (!(d[i] = s[i])) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
char *sys_getcwd_xnu(char *res, size_t size) {
|
|
int fd;
|
|
union metastat st[2];
|
|
char buf[XNU_MAXPATHLEN], *ret = NULL;
|
|
if ((fd = sys_openat(AT_FDCWD, ".", O_RDONLY | O_DIRECTORY, 0)) != -1) {
|
|
if (__sys_fstat(fd, &st[0]) != -1) {
|
|
if (st[0].xnu.st_dev && st[0].xnu.st_ino) {
|
|
if (__sys_fcntl(fd, XNU_F_GETPATH, (uintptr_t)buf) != -1) {
|
|
if (__sys_fstatat(AT_FDCWD, buf, &st[1], 0) != -1) {
|
|
if (st[0].xnu.st_dev == st[1].xnu.st_dev &&
|
|
st[0].xnu.st_ino == st[1].xnu.st_ino) {
|
|
if (CopyString(res, buf, size)) {
|
|
ret = res;
|
|
} else {
|
|
erange();
|
|
}
|
|
} else {
|
|
einval();
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
einval();
|
|
}
|
|
}
|
|
close(fd);
|
|
}
|
|
return ret;
|
|
}
|