Returns the number of hard links for the filesystem object identified by path p.
The non-throwing overload returns static_cast<uintmax_t>(-1) on errors.
[edit] Parameters p - path to examine ec - out-parameter for error reporting in the non-throwing overload [edit] Return valueThe number of hard links for p.
[edit] ExceptionsAny overload not marked noexcept may throw std::bad_alloc if memory allocation fails.
Throws
std::filesystem::filesystem_erroron underlying OS API errors, constructed with
pas the first path argument and the OS error code as the error code argument.
2)Sets a
std::error_code¶meter to the OS API error code if an OS API call fails, and executes
ec.clear()if no errors occur.
[edit] Example#include <filesystem>
#include <iostream>
namespace fs = std::filesystem;
int main()
{
// On a POSIX-style filesystem, each directory has at least 2 hard links:
// itself and the special member pathname "."
fs::path p = fs::current_path();
std::cout << "Number of hard links for current path is "
<< fs::hard_link_count(p) << '\n';
// Each ".." is a hard link to the parent directory, so the total number
// of hard links for any directory is 2 plus number of direct subdirectories
p = fs::current_path() / ".."; // Each dot-dot is a hard link to parent
std::cout << "Number of hard links for .. is "
<< fs::hard_link_count(p) << '\n';
}
Possible output:
Number of hard links for current path is 2 Number of hard links for .. is 3[edit] See also creates a hard link
std::filesystem::directory_entry) [edit]
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