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top: Check sortindx. _________________________REVERTED

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Here's yet another example of dealing with a potential
problem at the symptom level, instead of addressing it
at the source. So, we will reverse that original patch
referenced below in preparation for a proper solution.

[ at the least, this ugly code should have used that ]
[ existing MAXTBL macro, making it a little prettier ]

Reference(s):
. original qualys patch
0102-top-Check-sortindx.patch
commit d5b8ac7139

Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit is contained in:
Jim Warner 2018-05-18 00:00:00 -05:00 committed by Craig Small
parent 53e2654726
commit fb8cee585f
1 changed files with 1 additions and 13 deletions
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14
top/top.c
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@ -1865,9 +1865,6 @@ end_justifies:
// for calibrate_fields and summary_show 1st pass
#define L_DEFAULT PROC_FILLSTAT
#define UNSAFE_SORTINDX(indx, size) \
((indx) < 0 || (size_t)(indx) >= (size))
/* These are our gosh darn 'Fields' !
They MUST be kept in sync with pflags !! */
static FLD_t Fieldstab[] = {
@ -2059,8 +2056,6 @@ static void build_headers (void) {
do {
if (VIZISw(w)) {
if (UNSAFE_SORTINDX(w->rc.sortindx, sizeof(Fieldstab) / sizeof(Fieldstab[0])))
w->rc.sortindx = EU_PID;
memset((s = w->columnhdr), 0, sizeof(w->columnhdr));
if (Rc.mode_altscr) s = scat(s, fmtmk("%d", w->winnum), w->columnhdr, sizeof(w->columnhdr));
for (i = 0; i < w->maxpflgs; i++) {
@ -2335,8 +2330,7 @@ static void fields_utility (void) {
#endif
#define swapEM { char c; unSCRL; c = w->rc.fieldscur[i]; \
w->rc.fieldscur[i] = *p; *p = c; p = &w->rc.fieldscur[i]; }
#define spewFI { char *t; if (UNSAFE_SORTINDX(w->rc.sortindx, EU_MAXPFLGS)) w->rc.sortindx = EU_PID; \
f = w->rc.sortindx; t = strchr(w->rc.fieldscur, f + FLD_OFFSET); \
#define spewFI { char *t; f = w->rc.sortindx; t = strchr(w->rc.fieldscur, f + FLD_OFFSET); \
if (!t) t = strchr(w->rc.fieldscur, (f + FLD_OFFSET) | 0x80); \
i = (t) ? (int)(t - w->rc.fieldscur) : 0; }
WIN_t *w = Curwin; // avoid gcc bloat with a local copy
@ -3703,8 +3697,6 @@ static int config_cvt (WIN_t *q) {
strcpy(q->rc.fieldscur, fields_dst);
// lastly, we must adjust the old sort field enum...
if (UNSAFE_SORTINDX(q->rc.sortindx, sizeof(fields_src) / sizeof(fields_src[0])))
return 1;
x = q->rc.sortindx;
q->rc.sortindx = fields_src[x] - FLD_OFFSET;
@ -3754,8 +3746,6 @@ error Hey, fix the above fscanf 'PFLAGSSIZ' dependency !
if (3 > fscanf(fp, "\twinflags=%d, sortindx=%d, maxtasks=%d, graph_cpus=%d, graph_mems=%d\n"
, &w->rc.winflags, &w->rc.sortindx, &w->rc.maxtasks, &w->rc.graph_cpus, &w->rc.graph_mems))
return p;
if (UNSAFE_SORTINDX(w->rc.sortindx, sizeof(Fieldstab) / sizeof(Fieldstab[0])))
return p;
if (w->rc.graph_cpus < 0 || w->rc.graph_cpus > 2)
return p;
if (w->rc.graph_mems < 0 || w->rc.graph_mems > 2)
@ -5981,8 +5971,6 @@ static int window_show (WIN_t *q, int wmax) {
else Frame_srtflg = -1;
Frame_ctimes = CHKw(q, Show_CTIMES); // this & next, only maybe
Frame_cmdlin = CHKw(q, Show_CMDLIN);
if (UNSAFE_SORTINDX(q->rc.sortindx, sizeof(Fieldstab) / sizeof(Fieldstab[0])))
q->rc.sortindx = EU_PID;
qsort(q->ppt, Frame_maxtask, sizeof(proc_t*), Fieldstab[q->rc.sortindx].sort);
}