PR_FCNTL(3PROC) | Process Control Library Functions | PR_FCNTL(3PROC) |
pr_fcntl
— inject
fcntl system call into victim process
Process Control Library (libproc, -lproc)
#include
<libproc.h>
int
pr_fcntl
(struct ps_prochandle
*P, int fd, int cmd,
void *argp);
The
pr_fcntl
()
function injects the fcntl(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
fcntl(2) on the currently running
process.
The arguments fd, cmd, and argp have the same meaning as in fcntl(2). See fcntl(2) for the full description and purpose of the fcntl system call and its arguments.
The
pr_fcntl
()
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_fcntl
()
function's return value is that described in
fcntl(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 fcntl(2).
The pr_fcntl
() function will fail if:
ENOSYS
See LOCKING in libproc(3LIB).
November 27, 2023 | OmniOS |