| 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 *argp0, void *argp1);
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 and
cmd have the same meaning as in
fcntl(2). The value of
cmd determines how many arguments are passed. A
command that takes no arguments, like F_GETFD,
should pass both argp0 and argp1
as NULL. A command that takes integer arguments,
like F_SETFL or F_DUP3FD,
should cast the integer arguments to a void * and pass
unused arguments as NULL. See
fcntl(2) for the full description and
purpose of the 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:
ENOSYSSee LOCKING in libproc(3LIB).
| July 30, 2024 | OmniOS |