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
61 lines
1.2 KiB
C
61 lines
1.2 KiB
C
/*
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* Check decoding of sethostname syscall.
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*
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* Copyright (c) 2016 Fei Jie <feij.fnst@cn.fujitsu.com>
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* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2016-2018 The strace developers.
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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 <asm/unistd.h>
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#ifdef __NR_sethostname
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# include <stdio.h>
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# include <unistd.h>
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# ifdef HAVE_LINUX_UTSNAME_H
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# include <linux/utsname.h>
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# endif
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# ifndef __NEW_UTS_LEN
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# define __NEW_UTS_LEN 64
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# endif
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int
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main(void)
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{
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kernel_ulong_t len;
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long rc;
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len = __NEW_UTS_LEN;
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rc = syscall(__NR_sethostname, 0, len);
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printf("sethostname(NULL, %u) = %s\n",
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(unsigned) len, sprintrc(rc));
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if (F8ILL_KULONG_MASK) {
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len |= F8ILL_KULONG_MASK;
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rc = syscall(__NR_sethostname, 0, len);
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printf("sethostname(NULL, %u) = %s\n",
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(unsigned) len, sprintrc(rc));
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}
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len = __NEW_UTS_LEN + 1;
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void *const p = tail_alloc(len);
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rc = syscall(__NR_sethostname, p, len);
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printf("sethostname(%p, %u) = %s\n",
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p, (unsigned) len, sprintrc(rc));
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puts("+++ exited with 0 +++");
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return 0;
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}
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#else
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SKIP_MAIN_UNDEFINED("__NR_sethostname")
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#endif
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