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Command: lim_cur | Section: 9 | Source: OpenBSD | File: lim_cur.9
LIM_CUR(9) FreeBSD Kernel Developer's Manual LIM_CUR(9)
NAME
lim_cur, lim_cur_proc, lim_fork, lim_free, lim_read_enter, lim_read_leave
- Resource limit interface
SYNOPSIS
#include <sys/types.h>
#include <sys/resourcevar.h>
rlim_t
lim_cur(int which);
rlim_t
lim_cur_proc(struct proc *p, int which);
struct plimit *
lim_fork(struct process *parent, struct process *child);
void
lim_free(struct plimit *limit);
struct plimit *
lim_read_enter();
void
lim_read_leave(struct plimit *limit);
DESCRIPTION
The resource limit interface provides read access to the resource limits
of the process.
lim_cur() returns the value of limit which of the current process. The
which can take one of the following values:
#define RLIMIT_CPU 0 /* cpu time in milliseconds */
#define RLIMIT_FSIZE 1 /* maximum file size */
#define RLIMIT_DATA 2 /* data size */
#define RLIMIT_STACK 3 /* stack size */
#define RLIMIT_CORE 4 /* core file size */
#define RLIMIT_RSS 5 /* resident set size */
#define RLIMIT_MEMLOCK 6 /* locked-in-memory address space */
#define RLIMIT_NPROC 7 /* number of processes */
#define RLIMIT_NOFILE 8 /* number of open files */
lim_cur_proc() is like lim_cur() but returns the value of limit which of
thread p.
lim_read_enter() begins read access to the current process' resource
limit structure.
lim_read_leave() finishes read access to the resource limit structure.
Sections denoted by lim_read_enter() and lim_read_leave() cannot nest.
Using lim_cur() inside the read section is not allowed because the
function uses lim_read_enter() and lim_read_leave() internally.
lim_free() releases the reference limit.
lim_fork() makes the process child share the resource limits of process
parent.
CONTEXT
lim_cur(), lim_cur_proc(), lim_fork(), lim_free(), lim_read_enter() and
lim_read_leave() can be called during autoconf, or from process context.
RETURN VALUES
lim_cur() and lim_cur_proc() return the value of the given resource
limit.
lim_read_enter() returns a read reference to the current process'
resource limits.
FreeBSD 14.1-RELEASE-p8 June 21, 2019 FreeBSD 14.1-RELEASE-p8