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.
129 lines
3.8 KiB
C
129 lines
3.8 KiB
C
/* This file contains procedures to dump to FS' data structures.
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*
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* The entry points into this file are
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* dtab_dump: display device <-> driver mappings
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* fproc_dump: display FS process table
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*
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* Created:
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* Oct 01, 2004: by Jorrit N. Herder
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*/
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#include "inc.h"
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#include "../mfs/const.h"
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#if defined(_USEAVFS)
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# include "../avfs/const.h"
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# include "../avfs/fproc.h"
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# include "../avfs/dmap.h"
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#else
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# include "../vfs/const.h"
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# include "../vfs/fproc.h"
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# include "../vfs/dmap.h"
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#endif
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#include <minix/dmap.h>
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PUBLIC struct fproc fproc[NR_PROCS];
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PUBLIC struct dmap dmap[NR_DEVICES];
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/*===========================================================================*
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* fproc_dmp *
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*===========================================================================*/
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PUBLIC void fproc_dmp()
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{
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struct fproc *fp;
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int i, n=0;
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static int prev_i;
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if (getsysinfo(VFS_PROC_NR, SI_PROC_TAB, fproc, sizeof(fproc)) != OK) {
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printf("Error obtaining table from VFS. Perhaps recompile IS?\n");
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return;
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}
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printf("File System (FS) process table dump\n");
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printf("-nr- -pid- -tty- -umask- --uid-- --gid-- -ldr- -sus-rev-proc-\n");
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for (i=prev_i; i<NR_PROCS; i++) {
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fp = &fproc[i];
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if (fp->fp_pid <= 0) continue;
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if (++n > 22) break;
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#if !defined(_USEAVFS)
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printf("%3d %4d %2d/%d 0x%05x %2d (%2d) %2d (%2d) %3d %3d %3d ",
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i, fp->fp_pid,
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((fp->fp_tty>>MAJOR)&BYTE), ((fp->fp_tty>>MINOR)&BYTE),
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fp->fp_umask,
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fp->fp_realuid, fp->fp_effuid, fp->fp_realgid, fp->fp_effgid,
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fp->fp_sesldr,
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fp->fp_blocked_on, !!fp->fp_revived
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);
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#else
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printf("%3d %4d %2d/%d 0x%05x %2d (%2d) %2d (%2d) %3d %3d %3d ",
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i, fp->fp_pid,
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major(fp->fp_tty), minor(fp->fp_tty),
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fp->fp_umask,
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fp->fp_realuid, fp->fp_effuid, fp->fp_realgid, fp->fp_effgid,
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!!(fp->fp_flags & FP_SESLDR),
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fp->fp_blocked_on, !!(fp->fp_flags & FP_REVIVED)
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);
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#endif
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if (fp->fp_blocked_on == FP_BLOCKED_ON_OTHER)
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printf("%4d\n", fp->fp_task);
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else
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printf(" nil\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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* dmap_flags *
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*===========================================================================*/
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PRIVATE char * dmap_flags(int flags)
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{
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static char fl[10];
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strcpy(fl, "-----");
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if(flags & DRV_FORCED) fl[0] = 'F';
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return fl;
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}
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/*===========================================================================*
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* dmap_style *
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*===========================================================================*/
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PRIVATE char * dmap_style(int dev_style)
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{
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static char str[16];
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switch(dev_style) {
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case STYLE_DEV: strcpy(str, "STYLE_DEV"); break;
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case STYLE_DEVA: strcpy(str, "STYLE_DEVA"); break;
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case STYLE_TTY: strcpy(str, "STYLE_TTY"); break;
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case STYLE_CTTY: strcpy(str, "STYLE_CTTY"); break;
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case STYLE_CLONE: strcpy(str, "STYLE_CLONE"); break;
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case STYLE_CLONE_A: strcpy(str, "STYLE_CLONE_A"); break;
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default: strcpy(str, "UNKNOWN"); break;
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}
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return str;
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}
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/*===========================================================================*
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* dtab_dmp *
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*===========================================================================*/
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PUBLIC void dtab_dmp()
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{
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int i;
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if (getsysinfo(VFS_PROC_NR, SI_DMAP_TAB, dmap, sizeof(dmap)) != OK) {
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printf("Error obtaining table from VFS. Perhaps recompile IS?\n");
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return;
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}
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printf("File System (FS) device <-> driver mappings\n");
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printf(" Label Major Driver ept Flags Style \n");
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printf("------------- ----- ---------- ----- -------------\n");
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for (i=0; i<NR_DEVICES; i++) {
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if (dmap[i].dmap_driver == NONE) continue;
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printf("%13s %5d %10d %s %-13s\n",
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dmap[i].dmap_label, i, dmap[i].dmap_driver,
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dmap_flags(dmap[i].dmap_flags), dmap_style(dmap[i].dmap_style));
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}
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}
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