#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/prctl.h>
+#include <linux/capability.h>
#include <linux/init.h>
#include <linux/highuid.h>
#include <linux/security.h>
asmlinkage long sys_chown16(const char __user * filename, old_uid_t user, old_gid_t group)
{
- return sys_chown(filename, low2highuid(user), low2highgid(group));
+ long ret = sys_chown(filename, low2highuid(user), low2highgid(group));
+ /* avoid REGPARM breakage on x86: */
+ prevent_tail_call(ret);
+ return ret;
}
asmlinkage long sys_lchown16(const char __user * filename, old_uid_t user, old_gid_t group)
{
- return sys_lchown(filename, low2highuid(user), low2highgid(group));
+ long ret = sys_lchown(filename, low2highuid(user), low2highgid(group));
+ /* avoid REGPARM breakage on x86: */
+ prevent_tail_call(ret);
+ return ret;
}
asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group)
{
- return sys_fchown(fd, low2highuid(user), low2highgid(group));
+ long ret = sys_fchown(fd, low2highuid(user), low2highgid(group));
+ /* avoid REGPARM breakage on x86: */
+ prevent_tail_call(ret);
+ return ret;
}
asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid)
{
- return sys_setregid(low2highgid(rgid), low2highgid(egid));
+ long ret = sys_setregid(low2highgid(rgid), low2highgid(egid));
+ /* avoid REGPARM breakage on x86: */
+ prevent_tail_call(ret);
+ return ret;
}
asmlinkage long sys_setgid16(old_gid_t gid)
{
- return sys_setgid((gid_t)gid);
+ long ret = sys_setgid(low2highgid(gid));
+ /* avoid REGPARM breakage on x86: */
+ prevent_tail_call(ret);
+ return ret;
}
asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid)
{
- return sys_setreuid(low2highuid(ruid), low2highuid(euid));
+ long ret = sys_setreuid(low2highuid(ruid), low2highuid(euid));
+ /* avoid REGPARM breakage on x86: */
+ prevent_tail_call(ret);
+ return ret;
}
asmlinkage long sys_setuid16(old_uid_t uid)
{
- return sys_setuid((uid_t)uid);
+ long ret = sys_setuid(low2highuid(uid));
+ /* avoid REGPARM breakage on x86: */
+ prevent_tail_call(ret);
+ return ret;
}
asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid)
{
- return sys_setresuid(low2highuid(ruid), low2highuid(euid),
- low2highuid(suid));
+ long ret = sys_setresuid(low2highuid(ruid), low2highuid(euid),
+ low2highuid(suid));
+ /* avoid REGPARM breakage on x86: */
+ prevent_tail_call(ret);
+ return ret;
}
asmlinkage long sys_getresuid16(old_uid_t __user *ruid, old_uid_t __user *euid, old_uid_t __user *suid)
asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid)
{
- return sys_setresgid(low2highgid(rgid), low2highgid(egid),
- low2highgid(sgid));
+ long ret = sys_setresgid(low2highgid(rgid), low2highgid(egid),
+ low2highgid(sgid));
+ /* avoid REGPARM breakage on x86: */
+ prevent_tail_call(ret);
+ return ret;
}
asmlinkage long sys_getresgid16(old_gid_t __user *rgid, old_gid_t __user *egid, old_gid_t __user *sgid)
asmlinkage long sys_setfsuid16(old_uid_t uid)
{
- return sys_setfsuid((uid_t)uid);
+ long ret = sys_setfsuid(low2highuid(uid));
+ /* avoid REGPARM breakage on x86: */
+ prevent_tail_call(ret);
+ return ret;
}
asmlinkage long sys_setfsgid16(old_gid_t gid)
{
- return sys_setfsgid((gid_t)gid);
+ long ret = sys_setfsgid(low2highgid(gid));
+ /* avoid REGPARM breakage on x86: */
+ prevent_tail_call(ret);
+ return ret;
}
static int groups16_to_user(old_gid_t __user *grouplist,
old_gid_t group;
for (i = 0; i < group_info->ngroups; i++) {
- group = (old_gid_t)GROUP_AT(group_info, i);
+ group = high2lowgid(GROUP_AT(group_info, i));
if (put_user(group, grouplist+i))
return -EFAULT;
}
for (i = 0; i < group_info->ngroups; i++) {
if (get_user(group, grouplist+i))
return -EFAULT;
- GROUP_AT(group_info, i) = (gid_t)group;
+ GROUP_AT(group_info, i) = low2highgid(group);
}
return 0;