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92 lines
1.8 KiB
C
92 lines
1.8 KiB
C
/* go-varargs.c -- functions for calling C varargs functions.
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Copyright 2013 The Go Authors. All rights reserved.
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Use of this source code is governed by a BSD-style
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license that can be found in the LICENSE file. */
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#include "config.h"
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#include <errno.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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/* The syscall package calls C functions. The Go compiler can not
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represent a C varargs functions. On some systems it's important
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that the declaration of a function match the call. This function
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holds non-varargs C functions that the Go code can call. */
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int
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__go_open (char *path, int mode, mode_t perm)
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{
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return open (path, mode, perm);
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}
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int
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__go_fcntl (int fd, int cmd, int arg)
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{
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return fcntl (fd, cmd, arg);
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}
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int
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__go_fcntl_flock (int fd, int cmd, struct flock *arg)
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{
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return fcntl (fd, cmd, arg);
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}
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// This is for the net package. We use uintptr_t to make sure that
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// the types match, since the Go and C "int" types are not the same.
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struct go_fcntl_ret {
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uintptr_t r;
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uintptr_t err;
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};
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struct go_fcntl_ret
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__go_fcntl_uintptr (uintptr_t fd, uintptr_t cmd, uintptr_t arg)
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{
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int r;
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struct go_fcntl_ret ret;
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r = fcntl ((int) fd, (int) cmd, (int) arg);
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ret.r = (uintptr_t) r;
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if (r < 0)
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ret.err = (uintptr_t) errno;
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else
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ret.err = 0;
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return ret;
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}
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int
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__go_ioctl (int d, int request, int arg)
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{
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return ioctl (d, request, arg);
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}
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int
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__go_ioctl_ptr (int d, int request, void *arg)
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{
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return ioctl (d, request, arg);
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}
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#ifdef HAVE_OPEN64
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int
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__go_open64 (char *path, int mode, mode_t perm)
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{
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return open64 (path, mode, perm);
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}
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#endif
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#ifdef HAVE_OPENAT
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int
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__go_openat (int fd, char *path, int flags, mode_t mode)
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{
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return openat (fd, path, flags, mode);
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}
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#endif
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