1 /*- 2 * Copyright (c) 2007 Robert N. M. Watson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include <sys/param.h> 30 #include <sys/sysctl.h> 31 #include <sys/user.h> 32 33 #include <err.h> 34 #include <stdlib.h> 35 #include <stdio.h> 36 #include <unistd.h> 37 38 #include "procstat.h" 39 40 void 41 procstat_cred(pid_t pid, struct kinfo_proc *kipp) 42 { 43 int i; 44 int mib[4]; 45 int ngroups; 46 size_t len; 47 gid_t *groups = NULL; 48 49 if (!hflag) 50 printf("%5s %-16s %5s %5s %5s %5s %5s %5s %-20s\n", "PID", 51 "COMM", "EUID", "RUID", "SVUID", "EGID", "RGID", "SVGID", 52 "GROUPS"); 53 54 printf("%5d ", pid); 55 printf("%-16s ", kipp->ki_comm); 56 printf("%5d ", kipp->ki_uid); 57 printf("%5d ", kipp->ki_ruid); 58 printf("%5d ", kipp->ki_svuid); 59 printf("%5d ", kipp->ki_groups[0]); 60 printf("%5d ", kipp->ki_rgid); 61 printf("%5d ", kipp->ki_svgid); 62 63 /* 64 * We may have too many groups to fit in kinfo_proc's statically 65 * sized storage. If that occurs, attempt to retrieve them via 66 * sysctl. 67 */ 68 if (kipp->ki_cr_flags & KI_CRF_GRP_OVERFLOW) { 69 mib[0] = CTL_KERN; 70 mib[1] = KERN_PROC; 71 mib[2] = KERN_PROC_GROUPS; 72 mib[3] = pid; 73 74 ngroups = sysconf(_SC_NGROUPS_MAX) + 1; 75 len = ngroups * sizeof(gid_t); 76 if((groups = malloc(len)) == NULL) 77 err(-1, "malloc"); 78 79 if (sysctl(mib, 4, groups, &len, NULL, 0) == -1) { 80 warn("sysctl: kern.proc.groups: %d " 81 "group list truncated", pid); 82 free(groups); 83 groups = NULL; 84 } 85 ngroups = len / sizeof(gid_t); 86 } 87 if (groups == NULL) { 88 ngroups = kipp->ki_ngroups; 89 groups = kipp->ki_groups; 90 } 91 for (i = 0; i < ngroups; i++) 92 printf("%s%d", (i > 0) ? "," : "", groups[i]); 93 if (groups != kipp->ki_groups) 94 free(groups); 95 96 printf("\n"); 97 } 98