diff options
Diffstat (limited to 'winsup/cygwin/security.cc')
| -rw-r--r-- | winsup/cygwin/security.cc | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/winsup/cygwin/security.cc b/winsup/cygwin/security.cc index 5d7930c38..aa961c90c 100644 --- a/winsup/cygwin/security.cc +++ b/winsup/cygwin/security.cc @@ -772,14 +772,14 @@ verify_token (HANDLE token, cygsid &usersid, user_groups &groups, bool *pintern) is not well_known_null_sid, it must match pgrpsid */ if (intern && !groups.issetgroups ()) { - char sd_buf[MAX_SID_LEN + sizeof (SECURITY_DESCRIPTOR)]; + const DWORD sd_buf_siz = MAX_SID_LEN + sizeof (SECURITY_DESCRIPTOR); + PSECURITY_DESCRIPTOR sd_buf = (PSECURITY_DESCRIPTOR) alloca (sd_buf_siz); cygpsid gsid (NO_SID); if (!GetKernelObjectSecurity (token, GROUP_SECURITY_INFORMATION, - (PSECURITY_DESCRIPTOR) sd_buf, - sizeof sd_buf, &size)) + sd_buf, sd_buf_siz, &size)) debug_printf ("GetKernelObjectSecurity(), %E"); - else if (!GetSecurityDescriptorGroup ((PSECURITY_DESCRIPTOR) sd_buf, - (PSID *) &gsid, (BOOL *) &size)) + else if (!GetSecurityDescriptorGroup (sd_buf, (PSID *) &gsid, + (BOOL *) &size)) debug_printf ("GetSecurityDescriptorGroup(), %E"); if (well_known_null_sid != gsid) return gsid == groups.pgsid; @@ -1538,8 +1538,7 @@ alloc_sd (__uid32_t uid, __gid32_t gid, int attribute, } /* Initialize local access control list. */ - char acl_buf[3072]; - PACL acl = (PACL) acl_buf; + PACL acl = (PACL) alloca (3072); if (!InitializeAcl (acl, 3072, ACL_REVISION)) { __seterrno (); |