getcwd

Implemented in Antinomie 0.7.0 · Syscall list

Synopsis

long getcwd(char *buf, unsigned long size);

Number (x86-64)	79
ABI	common
Kernel entry point	sys_getcwd

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

Description

Copies the absolute path of the current working directory into a buffer.

Arguments

Name	Type	Meaning
buf (arg0)	char *	Pointer to a data buffer.
size (arg1)	unsigned long	Size in bytes.

Return value

On success: the length of the path including the terminating zero.

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
-34	ERANGE	The result does not fit in the supplied buffer.
-14	EFAULT	A pointer argument points outside the accessible address space.

Man page

getcwd(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
buf (arg0)	Entry	the pointer itself, as a raw word	args.0, args.raw[0]
↳ pointee	Exit	buffer, length min(size (arg1), result), limit no limit bytes	arg0.data	result is 0 or greater
size (arg1)	Entry	raw scalar word	args.1, args.size

Filter fields

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