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| author |   Eric W. Biederman <ebiederm@xmission.com> | 2010-06-13 03:28:59 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-06-16 14:55:35 -0700 |
| commit | 3f551f9436c05a3b5eccdd6e94733df5bb98d2a5 (patch) | |
| tree | ee5a9148797994682a4553e817e96b721303f3ec /net/core/sock.c | |
| parent | user_ns: Introduce user_nsmap_uid and user_ns_map_gid. (diff) | |
| download | linux-dev-3f551f9436c05a3b5eccdd6e94733df5bb98d2a5.tar.xz linux-dev-3f551f9436c05a3b5eccdd6e94733df5bb98d2a5.zip | |
sock: Introduce cred_to_ucred
To keep the coming code clear and to allow both the sock
code and the scm code to share the logic introduce a
fuction to translate from struct cred to struct ucred.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/sock.c')
| -rw-r--r-- | net/core/sock.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index f9ce0db41cd6..db8335ad7559 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -110,6 +110,7 @@ #include <linux/tcp.h> #include <linux/init.h> #include <linux/highmem.h> +#include <linux/user_namespace.h> #include <asm/uaccess.h> #include <asm/system.h> @@ -749,6 +750,19 @@ set_rcvbuf: EXPORT_SYMBOL(sock_setsockopt); +void cred_to_ucred(struct pid *pid, const struct cred *cred, + struct ucred *ucred) +{ + ucred->pid = pid_vnr(pid); + ucred->uid = ucred->gid = -1; + if (cred) { + struct user_namespace *current_ns = current_user_ns(); + + ucred->uid = user_ns_map_uid(current_ns, cred, cred->euid); + ucred->gid = user_ns_map_gid(current_ns, cred, cred->egid); + } +} + int sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) { |