Dmitry V. Levin
d6c71dd061
Indent the C preprocessor directives to reflect their nesting using the following script: $ cppi -l $(git grep -El '^[[:space:]]*#[[:space:]]*(if|ifdef|ifndef|elif|else|endif|define|pragma)[[:space:]]' |grep -v '\.sh$') |while read f; do cppi < "$f" > "$f".cppi; mv "$f".cppi "$f" done
50 lines
1002 B
C
50 lines
1002 B
C
/*
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* Invoke a socket syscall, either directly or via __NR_socketcall.
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*
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* Copyright (c) 2016-2018 Dmitry V. Levin <ldv@altlinux.org>
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* All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "tests.h"
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#include <errno.h>
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#include <unistd.h>
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#include <asm/unistd.h>
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/*
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* Invoke a socket syscall, either directly or via __NR_socketcall.
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* if nr == -1, no direct syscall invocation will be made.
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*/
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int
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socketcall(const int nr, const int call,
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long a1, long a2, long a3, long a4, long a5)
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{
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int rc = -1;
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errno = ENOSYS;
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#ifdef __NR_socketcall
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static int have_socketcall = -1;
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if (have_socketcall < 0) {
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if (syscall(__NR_socketcall, 0L, 0L, 0L, 0L, 0L) < 0
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&& EINVAL == errno) {
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have_socketcall = 1;
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} else {
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have_socketcall = 0;
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}
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}
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if (have_socketcall) {
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const long args[] = { a1, a2, a3, a4, a5 };
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rc = syscall(__NR_socketcall, call, args);
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} else
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#endif
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{
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if (nr != -1)
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rc = syscall(nr, a1, a2, a3, a4, a5);
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}
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return rc;
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}
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