src/bun.js/bindings/c-bindings.cpp


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// when we don't want to use @cInclude, we can just stick wrapper functions here
#include <sys/resource.h>
#include <cstdint>
#include <unistd.h>
#include <sys/fcntl.h>
#include <sys/stat.h>

extern "C" int32_t get_process_priority(uint32_t pid)
{
    return getpriority(PRIO_PROCESS, pid);
}

extern "C" int32_t set_process_priority(uint32_t pid, int32_t priority)
{
    return setpriority(PRIO_PROCESS, pid, priority);
}

extern "C" bool is_executable_file(const char* path)
{

#ifdef __APPLE__
    // O_EXEC is macOS specific
    int fd = open(path, O_EXEC | O_CLOEXEC, 0);
    if (fd < 0)
        return false;
    close(fd);
    return true;
#endif

    struct stat st;
    if (stat(path, &st) != 0)
        return false;

    // regular file and user can execute
    return S_ISREG(st.st_mode) && (st.st_mode & S_IXUSR);
}