39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
// Test program to demonstrate that Linux does not support AT_SYMLINK_NOFOLLOW
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// Copyright Duncan Exon Smith 2012
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// Distributed under the Boost Software License, Version 1.0.
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// See http://www.boost.org/LICENSE_1_0.txt
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// Test this by running:
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//
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// rm -rf data && mkdir data && g++ -otest-fchmodat fchmodat_AT_SYMLINK_NOFOLLOW_6659.cpp && (cd data && ../test-fchmodat)
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//
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// If no assertions go off, then it looks like fchmodat is supported,
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// but AT_SYMLINK_NOFOLLOW is not supported.
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#include <fstream>
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#include <cassert>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <cerrno>
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#ifdef NDEBUG
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# error This program depends on assert() so makes no sense if NDEBUG is defined
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#endif
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int main(int argc, char *argv[])
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{
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{ std::ofstream file("out"); file << "contents"; }
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assert(!::symlink("out", "sym"));
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assert(!::fchmodat(AT_FDCWD, "out", S_IRUSR | S_IWUSR | S_IXUSR, 0));
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assert(!::fchmodat(AT_FDCWD, "sym", S_IRUSR | S_IWUSR | S_IXUSR, 0));
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assert(::fchmodat(AT_FDCWD, "sym", S_IRUSR | S_IWUSR | S_IXUSR, AT_SYMLINK_NOFOLLOW) == -1);
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assert(errno == ENOTSUP);
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return 0;
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}
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