syscall.sh / sh / sigaction
sigaction
examine and change a signal action
sys_sigaction(int sig, const struct old_sigaction *act, struct old_sigaction *oact)| number | 67 (0x43) |
|---|---|
| abi | common |
| entry point | sys_sigaction |
| since | Linux 5.0 |
| man page | sigaction(2) |
| source | elixir.bootlin.com |
Registers
| register | value |
|---|---|
r3 | 67, the syscall number |
r4 | int sig |
r5 | const struct old_sigaction *act |
r6 | struct old_sigaction *oact |
r0 | the return value |
Then run trapa #31 to enter the kernel.
Same syscall on other architectures
Get this as JSON: https://api.syscall.sh/v2/syscalls/sh/sigaction