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userns: Convert setting and getting uid and gid system calls to use kuid and kgid

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Convert setregid, setgid, setreuid, setuid,
setresuid, getresuid, setresgid, getresgid, setfsuid, setfsgid,
getuid, geteuid, getgid, getegid,
waitpid, waitid, wait4.

Convert userspace uids and gids into kuids and kgids before
being placed on struct cred.  Convert struct cred kuids and
kgids into userspace uids and gids when returning them.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2012-02-07 18:51:01 -08:00
parent 18815a1808
commit a29c33f4e5
4 changed files with 178 additions and 86 deletions
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8
kernel/timer.c
View file

@ -1427,25 +1427,25 @@ SYSCALL_DEFINE0(getppid)
SYSCALL_DEFINE0(getuid)
{
/* Only we change this so SMP safe */
return current_uid();
return from_kuid_munged(current_user_ns(), current_uid());
}
SYSCALL_DEFINE0(geteuid)
{
/* Only we change this so SMP safe */
return current_euid();
return from_kuid_munged(current_user_ns(), current_euid());
}
SYSCALL_DEFINE0(getgid)
{
/* Only we change this so SMP safe */
return current_gid();
return from_kgid_munged(current_user_ns(), current_gid());
}
SYSCALL_DEFINE0(getegid)
{
/* Only we change this so SMP safe */
return current_egid();
return from_kgid_munged(current_user_ns(), current_egid());
}
#endif