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58 lines
2.7 KiB
C
58 lines
2.7 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2023 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/stdio/syscall.h"
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#include "libc/calls/calls.h"
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#include "libc/errno.h"
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#include "libc/stdio/rand.h"
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/**
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* Translation layer for some Linux system calls:
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*
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* - `SYS_gettid`
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* - `SYS_getrandom`
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*
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* @return system call result, or -1 w/ errno
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*/
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long syscall(long number, ...) {
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switch (number) {
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default:
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errno = ENOSYS;
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return -1;
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case SYS_gettid:
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return gettid();
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case SYS_getrandom: {
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va_list va;
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va_start(va, number);
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void *buf = va_arg(va, void *);
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size_t buflen = va_arg(va, size_t);
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unsigned flags = va_arg(va, unsigned);
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va_end(va);
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return getrandom(buf, buflen, flags);
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}
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case SYS_getcpu: {
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va_list va;
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va_start(va, number);
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unsigned *cpu = va_arg(va, unsigned *);
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unsigned *node = va_arg(va, unsigned *);
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va_end(va);
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return getcpu(cpu, node);
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}
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}
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}
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