1 #include <sys/cdefs.h>
2 #ifdef __FBSDID
3 __FBSDID("$FreeBSD: head/lib/libutil/kinfo_getvmmap.c 186512 2008-12-27 11:12:23Z rwatson $");
4 #endif
5 __RCSID("$NetBSD: kinfo_getvmmap.c,v 1.4 2017/06/14 12:24:51 kamil Exp $");
6
7 #include <sys/param.h>
8 #include <sys/sysctl.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <util.h>
12 #include <uvm/uvm_param.h>
13
14 struct kinfo_vmentry *
kinfo_getvmmap(pid_t pid,size_t * cntp)15 kinfo_getvmmap(pid_t pid, size_t *cntp)
16 {
17 int mib[5];
18 int error;
19 size_t len;
20 struct kinfo_vmentry *kiv;
21
22 *cntp = 0;
23 len = 0;
24 mib[0] = CTL_VM;
25 mib[1] = VM_PROC;
26 mib[2] = VM_PROC_MAP;
27 mib[3] = pid;
28 mib[4] = sizeof(*kiv);
29
30 error = sysctl(mib, (u_int)__arraycount(mib), NULL, &len, NULL, 0);
31 if (error)
32 return NULL;
33
34 len = len * 4 / 3;
35
36 kiv = malloc(len);
37 if (kiv == NULL)
38 return NULL;
39
40 error = sysctl(mib, (u_int)__arraycount(mib), kiv, &len, NULL, 0);
41 if (error) {
42 free(kiv);
43 return NULL;
44 }
45
46 *cntp = len / sizeof(*kiv);
47 return kiv; /* Caller must free() return value */
48 }
49