PR_LLSEEK(3PROC) Process Control Library Functions PR_LLSEEK(3PROC)

pr_llseek
inject llseek system call into victim process

Process Control Library (libproc, -lproc)
#include <libproc.h>

int
pr_llseek(struct ps_prochandle *P, int filedes, offset_t offset, int whence);

The pr_llseek() function injects the llseek(2) system call into the target process P by means of the agent LWP. If the process handle P is the value NULL then this will be equivalent to calling llseek(2) on the currently running process.

The arguments filedes, offset, and whence have the same meaning as in llseek(2). See llseek(2) for the full description and purpose of the llseek system call and its arguments.

The pr_llseek() function only works on active processes. Process handles that correspond to core files, zombie processes, or ELF objects do not support system call injection.

Upon successful completion, the pr_llseek() function's return value is that described in llseek(2). Otherwise, -1 is returned and errno is set to ENOSYS to indicate that the system call could not be injected.

For the full list of errors see the ERRORS section in llseek(2).

The pr_llseek() function will fail if:

An error occurred while trying to invoke the agent LWP and inject a system call in the process handle P or the process handle P does not support system call injection.

Uncommitted

See LOCKING in libproc(3LIB).

llseek(2), libproc(3LIB), proc(5)
May 11, 2016 OmniOS