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

pr_close
inject close system call into victim process

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

int
pr_close(struct ps_prochandle *P, int fd);

The pr_close() function injects the close(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 close(2) on the currently running process.

The argument fd has the same meaning as in close(2). See close(2) for the full description and purpose of the close system call and its arguments.

The pr_close() 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_close() function's return value is that described in close(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 close(2).

The pr_close() 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).

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