1 /* $NetBSD: procfs_status.c,v 1.40 2020/05/23 23:42:43 ad Exp $ */ 2 3 /* 4 * Copyright (c) 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Jan-Simon Pendry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)procfs_status.c 8.4 (Berkeley) 6/15/94 35 */ 36 37 /* 38 * Copyright (c) 1993 Jan-Simon Pendry 39 * 40 * This code is derived from software contributed to Berkeley by 41 * Jan-Simon Pendry. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)procfs_status.c 8.4 (Berkeley) 6/15/94 72 */ 73 74 #include <sys/cdefs.h> 75 __KERNEL_RCSID(0, "$NetBSD: procfs_status.c,v 1.40 2020/05/23 23:42:43 ad Exp $"); 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/time.h> 80 #include <sys/kernel.h> 81 #include <sys/proc.h> 82 #include <sys/vnode.h> 83 #include <sys/ioctl.h> 84 #include <sys/tty.h> 85 #include <sys/resource.h> 86 #include <sys/resourcevar.h> 87 #include <sys/kauth.h> 88 89 #include <miscfs/procfs/procfs.h> 90 91 static int 92 procfs_status_netbsd(struct lwp *l, struct uio *uio) 93 { 94 struct session *sess; 95 struct tty *tp; 96 kauth_cred_t cr; 97 struct proc *p = l->l_proc; 98 char *ps; 99 const char *sep; 100 const char *emulname = curlwp->l_proc->p_emul->e_name; 101 int pid, ppid, pgid, sid; 102 u_int i; 103 char psbuf[256+MAXHOSTNAMELEN]; /* XXX - conservative */ 104 uint16_t ngroups; 105 106 107 mutex_enter(&proc_lock); 108 mutex_enter(p->p_lock); 109 110 pid = p->p_pid; 111 ppid = p->p_ppid; 112 pgid = p->p_pgrp->pg_id; 113 sess = p->p_pgrp->pg_session; 114 sid = sess->s_sid; 115 116 ps = psbuf; 117 if (strncmp(emulname, "linux", 5) == 0) { 118 ps += snprintf(ps, sizeof(psbuf), "Name:\t%s\n", p->p_comm); 119 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "Pid:\t%d\n", pid); 120 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "PPid:\t%d\n", ppid); 121 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "TracerPid:\t%d\n", 0); 122 123 cr = p->p_cred; 124 ngroups = kauth_cred_ngroups(cr); 125 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "Groups:\t"); 126 for (i = 0; i < ngroups; i++) 127 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%d ", 128 kauth_cred_group(cr, i)); 129 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "\n"); 130 131 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), 132 "VmPeak:\t%8ju kB\n", (intmax_t)p->p_rlimit[RLIMIT_DATA].rlim_cur / 1024); 133 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), 134 "VmSize:\t%8ju kB\n", (intmax_t)p->p_rlimit[RLIMIT_DATA].rlim_cur / 1024); 135 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), 136 "VmRSS:\t%8ju kB\n", (intmax_t)p->p_rlimit[RLIMIT_RSS].rlim_cur / 1024); 137 138 } else { 139 /* comm pid ppid pgid sid maj,min ctty,sldr start ut st wmsg uid gid groups ... */ 140 141 memcpy(ps, p->p_comm, MAXCOMLEN); 142 ps[MAXCOMLEN] = '\0'; 143 ps += strlen(ps); 144 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d %d %d %d ", 145 pid, ppid, pgid, sid); 146 147 if ((p->p_lflag & PL_CONTROLT) && (tp = sess->s_ttyp)) 148 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%llu,%llu ", 149 (unsigned long long)major(tp->t_dev), 150 (unsigned long long)minor(tp->t_dev)); 151 else 152 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%d,%d ", 153 -1, -1); 154 155 sep = ""; 156 if (sess->s_ttyvp) { 157 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%sctty", sep); 158 sep = ","; 159 } 160 if (SESS_LEADER(p)) { 161 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%ssldr", sep); 162 sep = ","; 163 } 164 if (*sep != ',') 165 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "noflags"); 166 167 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %lld,%ld", 168 (long long)p->p_stats->p_start.tv_sec, 169 (long)p->p_stats->p_start.tv_usec); 170 171 { 172 struct timeval ut, st; 173 174 calcru(p, &ut, &st, (void *) 0, NULL); 175 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), 176 " %lld,%ld %lld,%ld", (long long)ut.tv_sec, 177 (long)ut.tv_usec, (long long)st.tv_sec, (long)st.tv_usec); 178 } 179 180 lwp_lock(l); 181 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %s", 182 (l->l_wchan && l->l_wmesg) ? l->l_wmesg : "nochan"); 183 lwp_unlock(l); 184 185 cr = p->p_cred; 186 187 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d", 188 kauth_cred_geteuid(cr)); 189 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d", 190 kauth_cred_getegid(cr)); 191 ngroups = kauth_cred_ngroups(cr); 192 for (i = 0; i < ngroups; i++) 193 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), ",%d", 194 kauth_cred_group(cr, i)); 195 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "\n"); 196 } 197 mutex_exit(p->p_lock); 198 mutex_exit(&proc_lock); 199 200 return (uiomove_frombuf(psbuf, ps - psbuf, uio)); 201 } 202 203 static int 204 procfs_status_linux(struct lwp *l, struct uio *uio) 205 { 206 kauth_cred_t cr; 207 struct proc *p = l->l_proc; 208 char *ps; 209 int pid, ppid; 210 u_int i; 211 char psbuf[256+MAXHOSTNAMELEN]; /* XXX - conservative */ 212 uint16_t ngroups; 213 214 mutex_enter(&proc_lock); 215 mutex_enter(p->p_lock); 216 217 pid = p->p_pid; 218 ppid = p->p_ppid; 219 220 ps = psbuf; 221 ps += snprintf(ps, sizeof(psbuf), "Name:\t%s\n", p->p_comm); 222 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "Pid:\t%d\n", pid); 223 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "PPid:\t%d\n", ppid); 224 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "TracerPid:\t%d\n", 0); 225 226 cr = p->p_cred; 227 ngroups = kauth_cred_ngroups(cr); 228 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "Groups:\t"); 229 for (i = 0; i < ngroups; i++) 230 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%d ", 231 kauth_cred_group(cr, i)); 232 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "\n"); 233 234 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), 235 "VmPeak:\t%8" PRIu64 " kB\n", p->p_rlimit[RLIMIT_DATA].rlim_cur / 1024); 236 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), 237 "VmSize:\t%8" PRIu64 " kB\n", p->p_rlimit[RLIMIT_DATA].rlim_cur / 1024); 238 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), 239 "VmRSS:\t%8" PRIu64 " kB\n", p->p_rlimit[RLIMIT_RSS].rlim_cur / 1024); 240 241 mutex_exit(p->p_lock); 242 mutex_exit(&proc_lock); 243 244 return (uiomove_frombuf(psbuf, ps - psbuf, uio)); 245 } 246 247 int 248 procfs_dostatus(struct lwp *curl, struct lwp *l, struct pfsnode *pfs, 249 struct uio *uio) 250 { 251 const char *emulname = curlwp->l_proc->p_emul->e_name; 252 253 if (uio->uio_rw != UIO_READ) 254 return (EOPNOTSUPP); 255 256 if (strncmp(emulname, "linux", 5) == 0) { 257 return procfs_status_linux(l, uio); 258 } else { 259 return procfs_status_netbsd(l, uio); 260 } 261 } 262
Indexes created Sat Sep 20 22:09:52 GMT 2025