diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libutil/Makefile | 6 | ||||
| -rw-r--r-- | lib/libutil/kinfo_getvmobject.3 | 74 | ||||
| -rw-r--r-- | lib/libutil/kinfo_getvmobject.c | 94 | ||||
| -rw-r--r-- | lib/libutil/libutil.h | 2 |
4 files changed, 174 insertions, 2 deletions
diff --git a/lib/libutil/Makefile b/lib/libutil/Makefile index 7e5f1a3..2f68628 100644 --- a/lib/libutil/Makefile +++ b/lib/libutil/Makefile @@ -10,7 +10,8 @@ SHLIB_MAJOR= 9 SRCS= _secure_path.c auth.c expand_number.c flopen.c fparseln.c gr_util.c \ hexdump.c humanize_number.c kinfo_getfile.c kinfo_getfile.c \ - kinfo_getallproc.c kinfo_getproc.c kinfo_getvmmap.c kld.c \ + kinfo_getallproc.c kinfo_getproc.c kinfo_getvmmap.c \ + kinfo_getvmobject.c kld.c \ login_auth.c login_cap.c \ login_class.c login_crypt.c login_ok.c login_times.c login_tty.c \ pidfile.c property.c pty.c pw_util.c quotafile.c realhostname.c \ @@ -27,7 +28,8 @@ CFLAGS+= -I${.CURDIR} -I${.CURDIR}/../libc/gen/ MAN+= expand_number.3 flopen.3 fparseln.3 hexdump.3 \ humanize_number.3 kinfo_getallproc.3 kinfo_getfile.3 \ - kinfo_getproc.3 kinfo_getvmmap.3 kld.3 login_auth.3 login_cap.3 \ + kinfo_getproc.3 kinfo_getvmmap.3 kinfo_getvmobject.3 kld.3 \ + login_auth.3 login_cap.3 \ login_class.3 login_ok.3 login_times.3 login_tty.3 pidfile.3 \ property.3 pty.3 quotafile.3 realhostname.3 realhostname_sa.3 \ _secure_path.3 trimdomain.3 uucplock.3 pw_util.3 diff --git a/lib/libutil/kinfo_getvmobject.3 b/lib/libutil/kinfo_getvmobject.3 new file mode 100644 index 0000000..dc0edd2 --- /dev/null +++ b/lib/libutil/kinfo_getvmobject.3 @@ -0,0 +1,74 @@ +.\" +.\" Copyright (c) 2015 John Baldwin <jhb@FreeBSD.org> +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd May 27, 2015 +.Dt KINFO_GETVMOBJECT 3 +.Os +.Sh NAME +.Nm kinfo_getvmobject +.Nd function for getting system-wide memory information +.Sh LIBRARY +.Lb libutil +.Sh SYNOPSIS +.In sys/types.h +.In sys/user.h +.In libutil.h +.Ft struct kinfo_vmobject * +.Fn kinfo_getvmobject "int *cntp" +.Sh DESCRIPTION +This function is used to obtain information about the objects using memory +in the system. +.Pp +The +.Ar cntp +argument allows the caller to know how many records are returned. +.Pp +This function is a wrapper around the +.Dq vm.objects +.Xr sysctl 3 +MIB. +While the kernel returns a packed structure, this function expands the +data into a fixed record format. +.Sh RETURN VALUES +On success the +.Fn kinfo_getvmobject +function returns a pointer to an array of +.Vt struct kinfo_vmobject +structures as defined by +.In sys/user.h . +The array is allocated by an internal call to +.Xr malloc 3 +and must be freed by the caller with a call to +.Xr free 3 . +On failure the +.Fn kinfo_getvmobject +function returns +.Dv NULL . +.Sh SEE ALSO +.Xr free 3 , +.Xr kinfo_getvmmap 3 , +.Xr malloc 3 diff --git a/lib/libutil/kinfo_getvmobject.c b/lib/libutil/kinfo_getvmobject.c new file mode 100644 index 0000000..7e031da --- /dev/null +++ b/lib/libutil/kinfo_getvmobject.c @@ -0,0 +1,94 @@ +/* + * Copyright (c) 2013 Hudson River Trading LLC + * Written by: John H. Baldwin <jhb@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/sysctl.h> +#include <sys/user.h> +#include <stdlib.h> +#include <string.h> + +#include "libutil.h" + +struct kinfo_vmobject * +kinfo_getvmobject(int *cntp) +{ + char *buf, *bp, *ep; + struct kinfo_vmobject *kvo, *list, *kp; + size_t len; + int cnt, i; + + buf = NULL; + for (i = 0; i < 3; i++) { + if (sysctlbyname("vm.objects", NULL, &len, NULL, 0) < 0) + return (NULL); + buf = reallocf(buf, len); + if (buf == NULL) + return (NULL); + if (sysctlbyname("vm.objects", buf, &len, NULL, 0) == 0) + goto unpack; + if (errno != ENOMEM) { + free(buf); + return (NULL); + } + } + free(buf); + return (NULL); + +unpack: + /* Count items */ + cnt = 0; + bp = buf; + ep = buf + len; + while (bp < ep) { + kvo = (struct kinfo_vmobject *)(uintptr_t)bp; + bp += kvo->kvo_structsize; + cnt++; + } + + list = calloc(cnt, sizeof(*list)); + if (list == NULL) { + free(buf); + return (NULL); + } + + /* Unpack */ + bp = buf; + kp = list; + while (bp < ep) { + kvo = (struct kinfo_vmobject *)(uintptr_t)bp; + memcpy(kp, kvo, kvo->kvo_structsize); + bp += kvo->kvo_structsize; + kp->kvo_structsize = sizeof(*kp); + kp++; + } + free(buf); + *cntp = cnt; + return (list); +} diff --git a/lib/libutil/libutil.h b/lib/libutil/libutil.h index b8b9836..b20ffa2 100644 --- a/lib/libutil/libutil.h +++ b/lib/libutil/libutil.h @@ -102,6 +102,8 @@ struct kinfo_file * kinfo_getfile(pid_t _pid, int *_cntp); struct kinfo_vmentry * kinfo_getvmmap(pid_t _pid, int *_cntp); +struct kinfo_vmobject * + kinfo_getvmobject(int *_cntp); struct kinfo_proc * kinfo_getallproc(int *_cntp); struct kinfo_proc * |
