Flags for signalfds and signal handlers.
| Name | Description |
|---|---|
| SA_ALT_STACK | Use the alternative stack for this signal handler. |
| SA_NOCLDSTOP | Don't send notifications when a child process stops or resumes. |
| SA_NOCLDWAIT | Don't turn dead children into zombies. |
| SA_NODEFER | Don't block the signal while it's being handled. |
| SA_NONE | Dummy flag with all flags unset. |
| SA_RESETHAND | Reset the handler to the default upon entry to the signal handler. |
| SA_RESTART | Restart syscalls after handling this signal. |
| SIGFD_CLOSE_ON_EXEC | Sets the close-on-exec flag on the file descriptor |
| SIGFD_DONT_BLOCK | Sets the file descriptor to non-blocking |
| SIGFD_NONE | Dummy flag with all flags unset. |