rt_sigqueueinfo

Implemented in Antinomie 0.7.0 · Syscall list

Synopsis

long rt_sigqueueinfo(pid_t pid, int sig, siginfo_t *uinfo);

Number (x86-64)	129
ABI	64
Kernel entry point	sys_rt_sigqueueinfo

This is the raw kernel prototype from the pinned Linux 6.12.94 schema, not the libc wrapper.

Description

Queues a signal with a siginfo payload to a process.

Arguments

Name	Type	Meaning
pid (arg0)	pid_t	Process or thread id.
sig (arg1)	int	Signal number.
uinfo (arg2)	siginfo_t *	Pointer to a siginfo structure.

Return value

On success: 0.

In an Antinomie trace the Return column and the ret filter field show the raw kernel return value. On failure that is the negative errno, for example -2 for ENOENT, not the -1 plus errno that the libc wrapper gives. syscall.errno holds the positive errno and syscall.success is false.

Common errors

Raw return	Name	Meaning
-1	EPERM	The operation is not permitted for this process.
-3	ESRCH	No such process or thread.

Man page

rt_sigqueueinfo(2) on man7.org

Captured by Antinomie

Coverage mark: Implemented. Every pointer argument has a capture rule in the pinned kernel patch and none of them records a “no decoder”, “address only” or “not observed” gap on any code path. Individual values can still be incomplete on a particular call; see the capture statuses.

Every call is recorded as an Entry record (the six argument words and the pointees copied at entry) and an Exit record (the return value and the pointees copied at exit).

Arguments

Argument	When	How	Recorded field key	Condition
pid (arg0)	Entry	raw scalar word	args.0, args.pid
sig (arg1)	Entry	raw scalar word	args.1, args.sig
uinfo (arg2)	Entry	the pointer itself, as a raw word	args.2, args.raw[2]
↳ pointee	Entry	structure siginfo_t (128 bytes)	signal.siginfo	the pointer is not NULL

Filter fields

• Result: ret, syscall.errno, syscall.success, syscall.duration_ns.
• Argument words: args.pid (arg0), args.sig (arg1), args.uinfo (arg2); args.0 to args.5 by position.
• Structure siginfo_t[] behind uinfo (arg2): args.uinfo.<member> for _si_pad[0], _si_pad[10], _si_pad[11], _si_pad[12], _si_pad[13], _si_pad[14], _si_pad[15], _si_pad[16], _si_pad[17], _si_pad[18], _si_pad[19], _si_pad[1], _si_pad[20], _si_pad[21], _si_pad[22], _si_pad[23], _si_pad[24], _si_pad[25], _si_pad[26], _si_pad[27], _si_pad[28], _si_pad[29], _si_pad[2], _si_pad[30], _si_pad[31], _si_pad[3], _si_pad[4], _si_pad[5], _si_pad[6], _si_pad[7], _si_pad[8], _si_pad[9], si_code, si_errno, si_signo.

See Syscall Trace filter for the full syntax.

For what the capture statuses mean, see Capture statuses. For what is never recorded, see Known gaps.