mergerfs/src/fs_open_fd.cpp
trapexit e87867cd2a
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Clear O_NOFOLLOW when opening a relative fd (#1494)
2025-07-08 18:25:00 -05:00

35 lines
683 B
C++

#include "fs_open_fd.hpp"
#if defined(__linux__)
#include "fmt/core.h"
#include "fs_openat.hpp"
#include "procfs.hpp"
#include <cassert>
int
fs::open_fd(const int fd_,
const int flags_)
{
assert(procfs::PROC_SELF_FD_FD > 0);
const int flags = (flags_ & ~O_NOFOLLOW);
return fs::openat(procfs::PROC_SELF_FD_FD,
fmt::format("{}",fd_),
flags);
}
#elif defined(__FreeBSD__)
#include "fs_openat.hpp"
int
fs::open_fd(const int fd_,
const int flags_)
{
const int flags = ((flags_ | O_EMPTY_PATH) & ~O_NOFOLLOW);
return fs::openat(fd_,"",flags);
}
#else
#error "fs::open_fd() not supported on platform"
#endif