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Annotation of src/sys/miscfs/procfs/procfs_status.c, Revision 1.25.2.1

1.25.2.1! yamt        1: /*     $NetBSD: procfs_status.c,v 1.25 2005/05/29 21:55:34 christos Exp $      */
1.9       cgd         2:
1.1       cgd         3: /*
1.6       mycroft     4:  * Copyright (c) 1993
                      5:  *     The Regents of the University of California.  All rights reserved.
1.1       cgd         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.
1.22      agc        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.
1.1       cgd        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:  *
1.9       cgd        71:  *     @(#)procfs_status.c     8.4 (Berkeley) 6/15/94
1.1       cgd        72:  */
1.17      lukem      73:
                     74: #include <sys/cdefs.h>
1.25.2.1! yamt       75: __KERNEL_RCSID(0, "$NetBSD: procfs_status.c,v 1.25 2005/05/29 21:55:34 christos Exp $");
1.1       cgd        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>
1.25.2.1! yamt       87: #include <sys/kauth.h>
        !            88:
1.1       cgd        89: #include <miscfs/procfs/procfs.h>
                     90:
1.6       mycroft    91: int
1.25.2.1! yamt       92: procfs_dostatus(curl, l, pfs, uio)
        !            93:        struct lwp *curl;
1.19      thorpej    94:        struct lwp *l;
1.1       cgd        95:        struct pfsnode *pfs;
                     96:        struct uio *uio;
                     97: {
                     98:        struct session *sess;
                     99:        struct tty *tp;
1.25.2.1! yamt      100:        kauth_cred_t cr;
1.19      thorpej   101:        struct proc *p = l->l_proc;
1.1       cgd       102:        char *ps;
1.25      christos  103:        const char *sep;
1.1       cgd       104:        int pid, ppid, pgid, sid;
1.18      thorpej   105:        u_int i;
1.16      david     106:        char psbuf[256+MAXHOSTNAMELEN];         /* XXX - conservative */
1.25.2.1! yamt      107:        uint16_t ngroups;
1.1       cgd       108:
                    109:        if (uio->uio_rw != UIO_READ)
                    110:                return (EOPNOTSUPP);
                    111:
                    112:        pid = p->p_pid;
                    113:        ppid = p->p_pptr ? p->p_pptr->p_pid : 0,
                    114:        pgid = p->p_pgrp->pg_id;
                    115:        sess = p->p_pgrp->pg_session;
1.14      thorpej   116:        sid = sess->s_sid;
1.1       cgd       117:
1.10      jtc       118: /* comm pid ppid pgid sid maj,min ctty,sldr start ut st wmsg uid gid groups ... */
1.1       cgd       119:
                    120:        ps = psbuf;
1.15      perry     121:        memcpy(ps, p->p_comm, MAXCOMLEN);
1.1       cgd       122:        ps[MAXCOMLEN] = '\0';
                    123:        ps += strlen(ps);
1.23      itojun    124:        ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d %d %d %d ",
                    125:            pid, ppid, pgid, sid);
1.1       cgd       126:
1.4       cgd       127:        if ((p->p_flag&P_CONTROLT) && (tp = sess->s_ttyp))
1.23      itojun    128:                ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%d,%d ",
                    129:                    major(tp->t_dev), minor(tp->t_dev));
1.1       cgd       130:        else
1.23      itojun    131:                ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%d,%d ",
                    132:                    -1, -1);
1.1       cgd       133:
                    134:        sep = "";
                    135:        if (sess->s_ttyvp) {
1.23      itojun    136:                ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%sctty", sep);
1.1       cgd       137:                sep = ",";
                    138:        }
                    139:        if (SESS_LEADER(p)) {
1.23      itojun    140:                ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%ssldr", sep);
1.1       cgd       141:                sep = ",";
                    142:        }
                    143:        if (*sep != ',')
1.23      itojun    144:                ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "noflags");
1.1       cgd       145:
1.19      thorpej   146:        if (l->l_flag & L_INMEM)
1.23      itojun    147:                ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %ld,%ld",
                    148:                    p->p_stats->p_start.tv_sec, p->p_stats->p_start.tv_usec);
1.1       cgd       149:        else
1.23      itojun    150:                ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " -1,-1");
1.24      perry     151:
1.5       cgd       152:        {
                    153:                struct timeval ut, st;
                    154:
                    155:                calcru(p, &ut, &st, (void *) 0);
1.23      itojun    156:                ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf),
                    157:                    " %ld,%ld %ld,%ld", ut.tv_sec, ut.tv_usec, st.tv_sec,
                    158:                    st.tv_usec);
1.5       cgd       159:        }
1.1       cgd       160:
1.23      itojun    161:        ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %s",
1.19      thorpej   162:            (l->l_wchan && l->l_wmesg) ? l->l_wmesg : "nochan");
1.1       cgd       163:
1.25.2.1! yamt      164:        cr = p->p_cred;
1.1       cgd       165:
1.25.2.1! yamt      166:        ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d",
        !           167:                       kauth_cred_geteuid(cr));
        !           168:        ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d",
        !           169:                       kauth_cred_getegid(cr));
        !           170:        ngroups = kauth_cred_ngroups(cr);
        !           171:        for (i = 0; i < ngroups; i++)
1.23      itojun    172:                ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), ",%d",
1.25.2.1! yamt      173:                    kauth_cred_group(cr, i));
1.23      itojun    174:        ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "\n");
1.1       cgd       175:
1.23      itojun    176:        return (uiomove_frombuf(psbuf, ps - psbuf, uio));
1.1       cgd       177: }

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