6f374faca5
This patch provides basic protection against damage resulting from differently compiled servers blindly copying tables to one another. In every getsysinfo() call, the caller is provided with the expected size of the requested data structure. The callee fails the call if the expected size does not match the data structure's actual size.
108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
/* This file contains procedures to dump to PM' data structures.
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*
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* The entry points into this file are
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* mproc_dmp: display PM process table
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*
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* Created:
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* May 11, 2005: by Jorrit N. Herder
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*/
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#include "inc.h"
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#include "../pm/mproc.h"
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#include <timers.h>
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#include <minix/config.h>
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#include <minix/type.h>
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PUBLIC struct mproc mproc[NR_PROCS];
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/*===========================================================================*
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* mproc_dmp *
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*===========================================================================*/
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PRIVATE char *flags_str(int flags)
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{
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static char str[14];
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str[0] = (flags & WAITING) ? 'W' : '-';
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str[1] = (flags & ZOMBIE) ? 'Z' : '-';
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str[2] = (flags & PAUSED) ? 'P' : '-';
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str[3] = (flags & ALARM_ON) ? 'A' : '-';
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str[4] = (flags & EXITING) ? 'E' : '-';
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str[5] = (flags & STOPPED) ? 'S' : '-';
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str[6] = (flags & SIGSUSPENDED) ? 'U' : '-';
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str[7] = (flags & REPLY) ? 'R' : '-';
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str[8] = (flags & VFS_CALL) ? 'F' : '-';
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str[9] = (flags & PM_SIG_PENDING) ? 's' : '-';
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str[10] = (flags & PRIV_PROC) ? 'p' : '-';
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str[11] = (flags & PARTIAL_EXEC) ? 'x' : '-';
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str[12] = (flags & DELAY_CALL) ? 'd' : '-';
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str[13] = '\0';
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return str;
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}
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PUBLIC void mproc_dmp()
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{
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struct mproc *mp;
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int i, n=0;
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static int prev_i = 0;
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if (getsysinfo(PM_PROC_NR, SI_PROC_TAB, mproc, sizeof(mproc)) != OK) {
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printf("Error obtaining table from PM. Perhaps recompile IS?\n");
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return;
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}
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printf("Process manager (PM) process table dump\n");
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printf("-process- -nr-pnr-tnr- --pid--ppid--pgrp- -uid-- -gid-- -nice- -flags-------\n");
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for (i=prev_i; i<NR_PROCS; i++) {
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mp = &mproc[i];
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if (mp->mp_pid == 0 && i != PM_PROC_NR) continue;
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if (++n > 22) break;
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printf("%8.8s %4d%4d%4d %5d %5d %5d ",
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mp->mp_name, i, mp->mp_parent, mp->mp_tracer, mp->mp_pid, mproc[mp->mp_parent].mp_pid, mp->mp_procgrp);
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printf("%2d(%2d) %2d(%2d) ",
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mp->mp_realuid, mp->mp_effuid, mp->mp_realgid, mp->mp_effgid);
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printf(" %3d %s ",
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mp->mp_nice, flags_str(mp->mp_flags));
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printf("\n");
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}
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if (i >= NR_PROCS) i = 0;
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else printf("--more--\r");
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prev_i = i;
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}
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/*===========================================================================*
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* sigaction_dmp *
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*===========================================================================*/
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PUBLIC void sigaction_dmp()
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{
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struct mproc *mp;
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int i, n=0;
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static int prev_i = 0;
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clock_t uptime;
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if (getsysinfo(PM_PROC_NR, SI_PROC_TAB, mproc, sizeof(mproc)) != OK) {
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printf("Error obtaining table from PM. Perhaps recompile IS?\n");
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return;
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}
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getuptime(&uptime);
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printf("Process manager (PM) signal action dump\n");
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printf("-process- -nr- --ignore- --catch- --block- -pending- -alarm---\n");
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for (i=prev_i; i<NR_PROCS; i++) {
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mp = &mproc[i];
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if (mp->mp_pid == 0 && i != PM_PROC_NR) continue;
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if (++n > 22) break;
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printf("%8.8s %3d ", mp->mp_name, i);
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printf(" %08lx %08lx %08lx ",
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mp->mp_ignore, mp->mp_catch, mp->mp_sigmask);
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printf("%08lx ", mp->mp_sigpending);
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if (mp->mp_flags & ALARM_ON) printf("%8ld", mp->mp_timer.tmr_exp_time-uptime);
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else printf(" -");
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printf("\n");
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}
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if (i >= NR_PROCS) i = 0;
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else printf("--more--\r");
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prev_i = i;
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}
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