sigreturn - restore process state after receiving a signal
sigreturn() system call restores the calling process' pre-signal state, and is usually used when the user wants to implement their own signal handlers. This can be done by setting the
SA_SIGINFO flag when registering the signal handler, and then calling
sigreturn() in order to restore the process state. One of the main advantages of using
sigreturn() is that it is significantly faster than
However, there are some drawbacks to using this system call. Most notably, any change that is made to the process state after calling
sigreturn(), before the process is switched from the kernel to user space again, will be lost. This includes changes to any data structures, resources, or file descriptors, as well as any additional system calls that might be made.
This system call takes no arguments.
This function is hooked in order to catch the
sigreturn() system call and perform any necessary cleanup tasks.
Example Use Case¶
One use case for
sigreturn() might be a signal handler that can be used to safely shut down a process. Since
sigreturn() restores the process's state to its state before the signal, it can be used in order to safely shut down the process without causing any errors or data inconsistencies.
There are no known issues with the
sigreturn() system call.
sigaction()- register a signal handler
sigprocmask()- manipulate a process's signal mask
This document was automatically generated by OpenAI and needs review. It might not be accurate and might contain errors. The authors of Tracee recommend that the user reads the "events.go" source file to understand the events and their arguments better.