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Begin fixing uses of strtol: parse integers more carefully.

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Patch from Jim Meyering
* src/internal.h: Include <errno.h>.
  Define new static inline function, xstrtol_i.
* src/virsh.c: Detect integer overflow in domain ID number
  in vshCommandOptDomainBy. Detect overflow and invalid port
  number suffix in cmdVNCDisplay.
* src/xend_internal.c: Parse CPU number more carefully in
  xenDaemonDomainGetVcpus.
* tests/int-overflow: New script. Test for the above-fixed bug.
* tests/Makefile.am: Add int-overflow to TESTS. Define
  TESTS_ENVIRONMENT, to propagate $abs_top_* variables into the
  int-overflow script. Adapt the "valgrind" rule not to clobber
  new TESTS_ENVIRONMENT.
Daniel
This commit is contained in:
Daniel Veillard
2007-11-12 14:00:32 +00:00
parent 906c1f5055
commit a500a479b0
7 changed files with 60 additions and 16 deletions
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10
src/xend_internal.c
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@@ -3038,11 +3038,11 @@ xenDaemonDomainGetVcpus(virDomainPtr domain, virVcpuInfoPtr info, int maxinfo,
!strcmp(t->u.s.car->u.s.car->u.value, "cpumap") &&
(t->u.s.car->u.s.cdr->kind == SEXPR_CONS)) {
for (t = t->u.s.car->u.s.cdr->u.s.car; t->kind == SEXPR_CONS; t = t->u.s.cdr)
if (t->u.s.car->kind == SEXPR_VALUE) {
cpu = strtol(t->u.s.car->u.value, NULL, 0);
if (cpu >= 0 && (VIR_CPU_MAPLEN(cpu+1) <= maplen)) {
VIR_USE_CPU(cpumap, cpu);
}
if (t->u.s.car->kind == SEXPR_VALUE
&& xstrtol_i(t->u.s.car->u.value, NULL, 10, &cpu) == 0
&& cpu >= 0
&& (VIR_CPU_MAPLEN(cpu+1) <= maplen)) {
VIR_USE_CPU(cpumap, cpu);
}
break;
}