Re: Capturing System Calls

[areisse () WAM UMD EDU (Andrew Reisse)]

The strace command prints out all the system calls made by a program
(ktrace on bsd). Under linux "ltrace" prints out library calls (like
printf, fopen, etc) instead of just system calls.

On Thu, 22 Jun 2000, Green Charles Contr AFRL/IFGB wrote:

> On UNIX Systems, (FreeBSD, Linux, Solaris) is there a way to capture/modify
> system calls calls from an application with out modifying the kernel (or
> using kernel modules) - preferably in userspace? The reason I ask is that a
> group of us are being asked to evaluate a piece of software for my company
> but they've put some heavy restrictions on how we do it. One of the
> restriction is that we're not allowed to modify the kernel.