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59 lines
2.3 KiB
59 lines
2.3 KiB
/* |
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* This file is part of strace test suite. |
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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 "tests.h" |
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#include <assert.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include <sys/param.h> |
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unsigned long |
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inode_of_sockfd(const int fd) |
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{ |
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assert(fd >= 0); |
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char linkpath[sizeof("/proc/self/fd/%u") + sizeof(int) * 3]; |
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assert(snprintf(linkpath, sizeof(linkpath), "/proc/self/fd/%u", fd) |
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< (int) sizeof(linkpath)); |
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char path[PATH_MAX + 1]; |
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const ssize_t path_len = readlink(linkpath, path, sizeof(path) - 1); |
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if (path_len < 0) |
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perror_msg_and_fail("readlink: %s", linkpath); |
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path[path_len] = '\0'; |
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static const char prefix[] = "socket:["; |
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const size_t prefix_len = sizeof(prefix) - 1; |
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assert(strncmp(path, prefix, prefix_len) == 0 |
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&& path[path_len - 1] == ']'); |
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return strtoul(path + prefix_len, NULL, 10); |
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}
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