#include #include #ifdef __linux__ #include #else #define NR_OPEN 1024 #endif int close_all(void) { int fd, max, err; max = sysconf(_SC_OPEN_MAX); err = max <= 0; if (max < NR_OPEN) max = NR_OPEN; for (fd = 3; fd < max; fd++) err |= close(fd) && errno != EBADF; return -err; }
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