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merge revision(s) 39353: [Backport #8057]

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* file.c (rb_group_member): added an error check. SUS says,
	  getgroups(small_value) may return EINVAL.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39653 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nagachika 2013-03-09 12:26:17 +00:00
parent efbc2d7f0f
commit 54281916e9
3 changed files with 9 additions and 2 deletions
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4
file.c
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@ -1036,7 +1036,7 @@ rb_group_member(GETGROUPS_T gid)
while (groups <= RB_MAX_GROUPS) {
gary = ALLOCV_N(GETGROUPS_T, v, groups);
anum = getgroups(groups, gary);
if (anum != groups)
if (anum != -1 && anum != groups)
break;
groups *= 2;
if (v) {
@ -1044,6 +1044,8 @@ rb_group_member(GETGROUPS_T gid)
v = 0;
}
}
if (anum == -1)
return FALSE;
while (--anum >= 0) {
if (gary[anum] == gid) {