rt_sigsuspend

Implemented in Antinomie 0.7.0 · Syscall list

Synopsis

long rt_sigsuspend(sigset_t *unewset, size_t sigsetsize);

Number (x86-64)	130
ABI	common
Kernel entry point	sys_rt_sigsuspend

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

Description

Replaces the blocked signal mask and sleeps until a signal is caught.

Arguments

Name	Type	Meaning
unewset (arg0)	sigset_t *	Pointer to the new signal mask.
sigsetsize (arg1)	size_t	Size in bytes of the signal set; must be sizeof(sigset_t), 8.

Return value

On success: never returns normally; ends with an error after a signal.

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
-4	EINTR	The call was interrupted by a signal.

Man page

sigsuspend(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
unewset (arg0)	Entry	the pointer itself, as a raw word	args.0, args.raw[0]
↳ pointee	Entry	signal set (sigset_t, 8 bytes)	signal.mask	always
sigsetsize (arg1)	Entry	raw scalar word	args.1, args.sigsetsize

Filter fields

• Result: ret, syscall.errno, syscall.success, syscall.duration_ns.
• Argument words: args.unewset (arg0), args.sigsetsize (arg1); args.0 to args.5 by position.

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.