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-rw-r--r--fs/binfmt_elf.c22
1 files changed, 13 insertions, 9 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 8fcfa39..c41fa2a 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -157,7 +157,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
int items;
elf_addr_t *elf_info;
int ei_index = 0;
- struct task_struct *tsk = current;
+ const struct cred *cred = current_cred();
struct vm_area_struct *vma;
/*
@@ -223,10 +223,10 @@ 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, tsk->uid);
- NEW_AUX_ENT(AT_EUID, tsk->euid);
- NEW_AUX_ENT(AT_GID, tsk->gid);
- NEW_AUX_ENT(AT_EGID, tsk->egid);
+ 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_SECURE, security_bprm_secureexec(bprm));
NEW_AUX_ENT(AT_EXECFN, bprm->exec);
if (k_platform) {
@@ -949,14 +949,14 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
set_binfmt(&elf_format);
#ifdef ARCH_HAS_SETUP_ADDITIONAL_PAGES
- retval = arch_setup_additional_pages(bprm, executable_stack);
+ retval = arch_setup_additional_pages(bprm, !!elf_interpreter);
if (retval < 0) {
send_sig(SIGKILL, current, 0);
goto out;
}
#endif /* ARCH_HAS_SETUP_ADDITIONAL_PAGES */
- compute_creds(bprm);
+ install_exec_creds(bprm);
current->flags &= ~PF_FORKNOEXEC;
retval = create_elf_tables(bprm, &loc->elf_ex,
load_addr, interp_load_addr);
@@ -1361,6 +1361,7 @@ static void fill_prstatus(struct elf_prstatus *prstatus,
static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
struct mm_struct *mm)
{
+ const struct cred *cred;
unsigned int i, len;
/* first copy the parameters from user space */
@@ -1388,8 +1389,11 @@ static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
psinfo->pr_zomb = psinfo->pr_sname == 'Z';
psinfo->pr_nice = task_nice(p);
psinfo->pr_flag = p->flags;
- SET_UID(psinfo->pr_uid, p->uid);
- SET_GID(psinfo->pr_gid, p->gid);
+ rcu_read_lock();
+ cred = __task_cred(p);
+ SET_UID(psinfo->pr_uid, cred->uid);
+ SET_GID(psinfo->pr_gid, cred->gid);
+ rcu_read_unlock();
strncpy(psinfo->pr_fname, p->comm, sizeof(psinfo->pr_fname));
return 0;
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