[PATCH 33/43] userns: Convert binary formats to use kuid/kgid where appropriate

"Eric W. Beiderman
2012-04-08T05:17:46Z

From: Eric W. Biederman <ebiederm@xmission.com>

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
---
fs/binfmt_elf.c | 12 ++++++------
fs/binfmt_elf_fdpic.c | 12 ++++++------
2 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 48ffb3d..efc6731 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -228,10 +228,10 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
NEW_AUX_ENT(AT_BASE, interp_load_addr);
NEW_AUX_ENT(AT_FLAGS, 0);
NEW_AUX_ENT(AT_ENTRY, exec->e_entry);
- NEW_AUX_ENT(AT_UID, cred->uid);
- NEW_AUX_ENT(AT_EUID, cred->euid);
- NEW_AUX_ENT(AT_GID, cred->gid);
- NEW_AUX_ENT(AT_EGID, cred->egid);
+ NEW_AUX_ENT(AT_UID, from_kuid_munged(cred->user_ns, cred->uid));
+ NEW_AUX_ENT(AT_EUID, from_kuid_munged(cred->user_ns, cred->euid));
+ NEW_AUX_ENT(AT_GID, from_kgid_munged(cred->user_ns, cred->gid));
+ NEW_AUX_ENT(AT_EGID, from_kgid_munged(cred->user_ns, cred->egid));
NEW_AUX_ENT(AT_SECURE, security_bprm_secureexec(bprm));
NEW_AUX_ENT(AT_RANDOM, (elf_addr_t)(unsigned long)u_rand_bytes);
NEW_AUX_ENT(AT_EXECFN, bprm->exec);
@@ -1367,8 +1367,8 @@ static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
psinfo->pr_flag = p->flags;
rcu_read_lock();
cred = __task_cred(p);
- SET_UID(psinfo->pr_uid, cred->uid);
- SET_GID(psinfo->pr_gid, cred->gid);
+ SET_UID(psinfo->pr_uid, from_kuid_munged(cred->user_ns, cred->uid));
+ SET_GID(psinfo->pr_gid, from_kgid_munged(cred->user_ns, cred->gid));
rcu_read_unlock();
strncpy(psinfo->pr_fname, p->comm, sizeof(psinfo->pr_fname));

diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index 9bd5612..82bf0ed 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -631,10 +631,10 @@ static int create_elf_fdpic_tables(struct linux_binprm *bprm,
NEW_AUX_ENT(AT_BASE, interp_params->elfhdr_addr);
NEW_AUX_ENT(AT_FLAGS, 0);
NEW_AUX_ENT(AT_ENTRY, exec_params->entry_addr);
- NEW_AUX_ENT(AT_UID, (elf_addr_t) cred->uid);
- NEW_AUX_ENT(AT_EUID, (elf_addr_t) cred->euid);
- NEW_AUX_ENT(AT_GID, (elf_addr_t) cred->gid);
- NEW_AUX_ENT(AT_EGID, (elf_addr_t) cred->egid);
+ NEW_AUX_ENT(AT_UID, (elf_addr_t) from_kuid_munged(cred->user_ns, cred->uid));
+ NEW_AUX_ENT(AT_EUID, (elf_addr_t) from_kuid_munged(cred->user_ns, cred->euid));
+ NEW_AUX_ENT(AT_GID, (elf_addr_t) from_kgid_munged(cred->user_ns, cred->gid));
+ NEW_AUX_ENT(AT_EGID, (elf_addr_t) from_kgid_munged(cred->user_ns, cred->egid));
NEW_AUX_ENT(AT_SECURE, security_bprm_secureexec(bprm));
NEW_AUX_ENT(AT_EXECFN, bprm->exec);

@@ -1431,8 +1431,8 @@ static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
psinfo->pr_flag = p->flags;
rcu_read_lock();
cred = __task_cred(p);
- SET_UID(psinfo->pr_uid, cred->uid);
- SET_GID(psinfo->pr_gid, cred->gid);
+ SET_UID(psinfo->pr_uid, from_kuid_munged(cred->user_ns, cred->uid));
+ SET_GID(psinfo->pr_gid, from_kgid_munged(cred->user_ns, cred->gid));
rcu_read_unlock();
strncpy(psinfo->pr_fname, p->comm, sizeof(psinfo->pr_fname));

--
1.7.2.5