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

pr_access
inject access system call into victim process

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

int
pr_access(struct ps_prochandle *P, const char *path, int amode);

The pr_access() function injects the access(2) system call into the target process P by means of the agent lwp. If the process handle P is NULL then this is equivalent to calling access(2) on the currently running process.

The arguments path and amode have the same meaning as in access(2). See access(2) for the full description and purpose of the access system call and its arguments.

The pr_access() 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_access() function's return value is that described in access(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 access(2).

The pr_access() 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).

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