illumos: manual page: pr_setrlimit64.3proc

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

NAME

pr_setrlimit, pr_setrlimit64 - inject setrlimit system call into victim
process

LIBRARY

Process Control Library (libproc, -lproc)

SYNOPSIS

#include <libproc.h>

int
pr_setrlimit(struct ps_prochandle *P, int resource,
const struct rlimit *rlp);

int
pr_setrlimit64(struct ps_prochandle *P, int resource,
struct rlimit64 *rlp);

DESCRIPTION

The pr_setrlimit() function injects the setrlimit(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 setrlimit(2) on the
currently running process.

The arguments resource and rlp have the same meaning as in setrlimit(2).
See setrlimit(2) for the full description and purpose of the setrlimit
system call and its arguments.

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

The pr_setrlimit64() function is equivalent to pr_setrlimit(); however,
rather than having the rlimit information be subject to the data model of
the target process, they always provide 64-bit rlimit information. See
lf64(7) for more information.

RETURN VALUES

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

ERRORS

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

The pr_setrlimit() function will fail if:

ENOSYS 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.

INTERFACE STABILITY

Uncommitted

MT-LEVEL
See LOCKING in libproc(3LIB).