epoll_create

Implemented in Antinomie 0.7.0 · Syscall list

Synopsis

long epoll_create(int size);

Number (x86-64)	213
ABI	common
Kernel entry point	sys_epoll_create

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

Description

Creates an epoll instance. The size argument is ignored; epoll_create1 replaces this call.

Arguments

Name	Type	Meaning
size (arg0)	int	Size in bytes.

Return value

On success: A new file descriptor (a non-negative number).

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
-24	EMFILE	The process has too many open file descriptors.
-22	EINVAL	An argument is invalid.

Man page

epoll_create(2) on man7.org

Captured by Antinomie

Coverage mark: Implemented. All arguments are plain values, recorded as the raw argument words at entry. There is no pointee to copy and no known gap.

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
size (arg0)	Entry	raw scalar word	args.0, args.size

Filter fields

• Result: ret, syscall.errno, syscall.success, syscall.duration_ns.
• Argument words: args.size (arg0); 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.