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Diffstat (limited to 'arch/s390/kernel/compat_linux.c')
-rw-r--r--arch/s390/kernel/compat_linux.c36
1 files changed, 24 insertions, 12 deletions
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index f606d935f49..189963c90c6 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -131,13 +131,19 @@ asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid)
low2highuid(suid));
}
-asmlinkage long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user *suid)
+asmlinkage long sys32_getresuid16(u16 __user *ruidp, u16 __user *euidp, u16 __user *suidp)
{
+ const struct cred *cred = current_cred();
int retval;
+ u16 ruid, euid, suid;
- if (!(retval = put_user(high2lowuid(current->cred->uid), ruid)) &&
- !(retval = put_user(high2lowuid(current->cred->euid), euid)))
- retval = put_user(high2lowuid(current->cred->suid), suid);
+ ruid = high2lowuid(from_kuid_munged(cred->user_ns, cred->uid));
+ euid = high2lowuid(from_kuid_munged(cred->user_ns, cred->euid));
+ suid = high2lowuid(from_kuid_munged(cred->user_ns, cred->suid));
+
+ if (!(retval = put_user(ruid, ruidp)) &&
+ !(retval = put_user(euid, euidp)))
+ retval = put_user(suid, suidp);
return retval;
}
@@ -148,13 +154,19 @@ asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid)
low2highgid(sgid));
}
-asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user *sgid)
+asmlinkage long sys32_getresgid16(u16 __user *rgidp, u16 __user *egidp, u16 __user *sgidp)
{
+ const struct cred *cred = current_cred();
int retval;
+ u16 rgid, egid, sgid;
+
+ rgid = high2lowgid(from_kgid_munged(cred->user_ns, cred->gid));
+ egid = high2lowgid(from_kgid_munged(cred->user_ns, cred->egid));
+ sgid = high2lowgid(from_kgid_munged(cred->user_ns, cred->sgid));
- if (!(retval = put_user(high2lowgid(current->cred->gid), rgid)) &&
- !(retval = put_user(high2lowgid(current->cred->egid), egid)))
- retval = put_user(high2lowgid(current->cred->sgid), sgid);
+ if (!(retval = put_user(rgid, rgidp)) &&
+ !(retval = put_user(egid, egidp)))
+ retval = put_user(sgid, sgidp);
return retval;
}
@@ -258,22 +270,22 @@ asmlinkage long sys32_setgroups16(int gidsetsize, u16 __user *grouplist)
asmlinkage long sys32_getuid16(void)
{
- return high2lowuid(current->cred->uid);
+ return high2lowuid(from_kuid_munged(current_user_ns(), current_uid()));
}
asmlinkage long sys32_geteuid16(void)
{
- return high2lowuid(current->cred->euid);
+ return high2lowuid(from_kuid_munged(current_user_ns(), current_euid()));
}
asmlinkage long sys32_getgid16(void)
{
- return high2lowgid(current->cred->gid);
+ return high2lowgid(from_kgid_munged(current_user_ns(), current_gid()));
}
asmlinkage long sys32_getegid16(void)
{
- return high2lowgid(current->cred->egid);
+ return high2lowgid(from_kgid_munged(current_user_ns(), current_egid()));
}
/*