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sigpending() -- System Call (libc) Examine signals that are blocked and pending #include <signal.h> int sigpending(stash) sigset_t *stash; sigpending() retrieves the signals that have been sent to the calling process but have been blocked by the calling process's signal mask. stash points to the area of memory where the retrieved signals are to be stored. sigpending() returns zero if all goes well. It returns -1 and sets errno to EFAULT if stash points outside the process's allocated address space. See Also libc, sigaction(), signal() POSIX Standard, §3.3.6