Next: 10.2.3 signal under Linux Up: 10.2 Signal handling Previous: 10.2.1 Signals under SVR4
The following values for the sa_flags member of the sigaction structure are defined for Linux.
- SA_NOCLDSTOP: Don't send SIGCHLD when a child process is stopped.
- SA_RESTART: Force restart of certain system calls when interrupted by a signal handler.
- SA_NOMASK: Disable signal mask (which blocks signals during execution of a signal handler).
- SA_ONESHOT: Clear signal handler after execution. Note that SVR4 uses SA_RESETHAND to mean the same thing.
- SA_INTERRUPT: Defined under Linux, but unused. Under SunOS, system calls were automatically restarted, and this flag disabled that behavior.
- SA_STACK: Currently a no-op, to be used for signal stacks.
Note that POSIX.1 defines only SA_NOCLDSTOP, and there are several other options defined by SVR4 not available under Linux. When porting applications which use sigaction, you may have to modify the values of sa_flags to get the appropriate behavior.
Fri Mar 29 14:43:04 EST 1996