92 lines
2.9 KiB
C
92 lines
2.9 KiB
C
/*
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* Check decoding of getrlimit/ugetrlimit syscall.
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*
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* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <errno.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <sys/resource.h>
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#include <unistd.h>
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#include "xlat.h"
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#include "xlat/resources.h"
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const char *
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sprint_rlim(kernel_ulong_t lim)
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{
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if (sizeof(lim) == sizeof(uint64_t)) {
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if (lim == (kernel_ulong_t) -1ULL)
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return "RLIM64_INFINITY";
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} else {
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if (lim == (kernel_ulong_t) -1U)
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return "RLIM_INFINITY";
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}
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static char buf[2][sizeof(lim)*3 + sizeof("*1024")];
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static int i;
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i &= 1;
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if (lim > 1024 && lim % 1024 == 0)
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sprintf(buf[i], "%llu*1024", (unsigned long long) lim / 1024);
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else
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sprintf(buf[i], "%llu", (unsigned long long) lim);
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return buf[i++];
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}
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#ifdef NR_GETRLIMIT
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int
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main(void)
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{
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kernel_ulong_t *const rlimit = tail_alloc(sizeof(*rlimit) * 2);
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const struct xlat *xlat;
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for (xlat = resources; xlat->str; ++xlat) {
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unsigned long res = 0xfacefeed00000000ULL | xlat->val;
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long rc = syscall(NR_GETRLIMIT, res, 0);
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if (rc && ENOSYS == errno)
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perror_msg_and_skip(STR_GETRLIMIT);
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printf("%s(%s, NULL) = %ld %s (%m)\n",
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STR_GETRLIMIT, xlat->str, rc, errno2name());
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rc = syscall(NR_GETRLIMIT, res, rlimit);
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if (rc)
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printf("%s(%s, NULL) = %ld %s (%m)\n",
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STR_GETRLIMIT, xlat->str, rc, errno2name());
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else
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printf("%s(%s, {rlim_cur=%s, rlim_max=%s})"
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" = 0\n", STR_GETRLIMIT, xlat->str,
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sprint_rlim(rlimit[0]), sprint_rlim(rlimit[1]));
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}
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puts("+++ exited with 0 +++");
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return 0;
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}
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#endif /* NR_GETRLIMIT */
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