CRED: Wrap current->cred and a few other accessors
Wrap current->cred and a few other accessors to hide their actual implementation. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Родитель
f1752eec61
Коммит
86a264abe5
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@ -1767,25 +1767,24 @@ groups16_from_user(struct group_info *group_info, short __user *grouplist)
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asmlinkage long
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sys32_getgroups16 (int gidsetsize, short __user *grouplist)
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{
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const struct cred *cred = current_cred();
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int i;
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if (gidsetsize < 0)
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return -EINVAL;
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get_group_info(current->cred->group_info);
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i = current->cred->group_info->ngroups;
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i = cred->group_info->ngroups;
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if (gidsetsize) {
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if (i > gidsetsize) {
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i = -EINVAL;
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goto out;
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}
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if (groups16_to_user(grouplist, current->cred->group_info)) {
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if (groups16_to_user(grouplist, cred->group_info)) {
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i = -EFAULT;
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goto out;
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}
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}
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out:
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put_group_info(current->cred->group_info);
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return i;
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}
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@ -702,6 +702,7 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
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struct tun_net *tn;
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struct tun_struct *tun;
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struct net_device *dev;
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const struct cred *cred = current_cred();
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int err;
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tn = net_generic(net, tun_net_id);
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@ -712,11 +713,12 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
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/* Check permissions */
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if (((tun->owner != -1 &&
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current_euid() != tun->owner) ||
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cred->euid != tun->owner) ||
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(tun->group != -1 &&
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current_egid() != tun->group)) &&
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!capable(CAP_NET_ADMIN))
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cred->egid != tun->group)) &&
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!capable(CAP_NET_ADMIN)) {
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return -EPERM;
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}
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}
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else if (__dev_get_by_name(net, ifr->ifr_name))
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return -EINVAL;
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@ -574,6 +574,7 @@ static int usbdev_open(struct inode *inode, struct file *file)
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{
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struct usb_device *dev = NULL;
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struct dev_state *ps;
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const struct cred *cred = current_cred();
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int ret;
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lock_kernel();
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@ -617,8 +618,8 @@ static int usbdev_open(struct inode *inode, struct file *file)
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init_waitqueue_head(&ps->wait);
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ps->discsignr = 0;
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ps->disc_pid = get_pid(task_pid(current));
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ps->disc_uid = current_uid();
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ps->disc_euid = current_euid();
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ps->disc_uid = cred->uid;
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ps->disc_euid = cred->euid;
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ps->disccontext = NULL;
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ps->ifclaimed = 0;
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security_task_getsecid(current, &ps->secid);
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@ -967,6 +968,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
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struct usb_host_endpoint *ep;
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struct async *as;
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struct usb_ctrlrequest *dr = NULL;
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const struct cred *cred = current_cred();
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unsigned int u, totlen, isofrmlen;
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int ret, ifnum = -1;
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int is_in;
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@ -1174,8 +1176,8 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
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as->signr = uurb->signr;
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as->ifnum = ifnum;
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as->pid = get_pid(task_pid(current));
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as->uid = current_uid();
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as->euid = current_euid();
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as->uid = cred->uid;
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as->euid = cred->euid;
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security_task_getsecid(current, &as->secid);
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if (!is_in) {
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if (copy_from_user(as->urb->transfer_buffer, uurb->buffer,
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@ -157,7 +157,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
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int items;
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elf_addr_t *elf_info;
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int ei_index = 0;
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struct task_struct *tsk = current;
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const struct cred *cred = current_cred();
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struct vm_area_struct *vma;
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/*
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@ -223,10 +223,10 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
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NEW_AUX_ENT(AT_BASE, interp_load_addr);
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NEW_AUX_ENT(AT_FLAGS, 0);
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NEW_AUX_ENT(AT_ENTRY, exec->e_entry);
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NEW_AUX_ENT(AT_UID, tsk->cred->uid);
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NEW_AUX_ENT(AT_EUID, tsk->cred->euid);
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NEW_AUX_ENT(AT_GID, tsk->cred->gid);
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NEW_AUX_ENT(AT_EGID, tsk->cred->egid);
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NEW_AUX_ENT(AT_UID, cred->uid);
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NEW_AUX_ENT(AT_EUID, cred->euid);
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NEW_AUX_ENT(AT_GID, cred->gid);
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NEW_AUX_ENT(AT_EGID, cred->egid);
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NEW_AUX_ENT(AT_SECURE, security_bprm_secureexec(bprm));
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NEW_AUX_ENT(AT_EXECFN, bprm->exec);
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if (k_platform) {
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@ -475,6 +475,7 @@ static int create_elf_fdpic_tables(struct linux_binprm *bprm,
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struct elf_fdpic_params *exec_params,
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struct elf_fdpic_params *interp_params)
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{
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const struct cred *cred = current_cred();
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unsigned long sp, csp, nitems;
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elf_caddr_t __user *argv, *envp;
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size_t platform_len = 0, len;
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@ -623,10 +624,10 @@ static int create_elf_fdpic_tables(struct linux_binprm *bprm,
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NEW_AUX_ENT(AT_BASE, interp_params->elfhdr_addr);
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NEW_AUX_ENT(AT_FLAGS, 0);
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NEW_AUX_ENT(AT_ENTRY, exec_params->entry_addr);
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NEW_AUX_ENT(AT_UID, (elf_addr_t) current->cred->uid);
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NEW_AUX_ENT(AT_EUID, (elf_addr_t) current->cred->euid);
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NEW_AUX_ENT(AT_GID, (elf_addr_t) current->cred->gid);
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NEW_AUX_ENT(AT_EGID, (elf_addr_t) current->cred->egid);
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NEW_AUX_ENT(AT_UID, (elf_addr_t) cred->uid);
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NEW_AUX_ENT(AT_EUID, (elf_addr_t) cred->euid);
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NEW_AUX_ENT(AT_GID, (elf_addr_t) cred->gid);
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NEW_AUX_ENT(AT_EGID, (elf_addr_t) cred->egid);
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NEW_AUX_ENT(AT_SECURE, security_bprm_secureexec(bprm));
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NEW_AUX_ENT(AT_EXECFN, bprm->exec);
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@ -1388,6 +1388,7 @@ EXPORT_SYMBOL(set_binfmt);
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*/
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static int format_corename(char *corename, long signr)
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{
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const struct cred *cred = current_cred();
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const char *pat_ptr = core_pattern;
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int ispipe = (*pat_ptr == '|');
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char *out_ptr = corename;
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@ -1424,7 +1425,7 @@ static int format_corename(char *corename, long signr)
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/* uid */
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case 'u':
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rc = snprintf(out_ptr, out_end - out_ptr,
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"%d", current_uid());
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"%d", cred->uid);
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if (rc > out_end - out_ptr)
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goto out;
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out_ptr += rc;
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@ -1432,7 +1433,7 @@ static int format_corename(char *corename, long signr)
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/* gid */
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case 'g':
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rc = snprintf(out_ptr, out_end - out_ptr,
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"%d", current_gid());
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"%d", cred->gid);
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if (rc > out_end - out_ptr)
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goto out;
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out_ptr += rc;
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@ -205,13 +205,14 @@ static void f_modown(struct file *filp, struct pid *pid, enum pid_type type,
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int __f_setown(struct file *filp, struct pid *pid, enum pid_type type,
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int force)
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{
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const struct cred *cred = current_cred();
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int err;
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err = security_file_set_fowner(filp);
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if (err)
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return err;
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f_modown(filp, pid, type, current_uid(), current_euid(), force);
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f_modown(filp, pid, type, cred->uid, cred->euid, force);
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return 0;
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}
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EXPORT_SYMBOL(__f_setown);
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@ -94,7 +94,7 @@ int proc_nr_files(ctl_table *table, int write, struct file *filp,
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*/
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struct file *get_empty_filp(void)
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{
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struct task_struct *tsk;
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const struct cred *cred = current_cred();
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static int old_max;
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struct file * f;
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@ -118,12 +118,11 @@ struct file *get_empty_filp(void)
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if (security_file_alloc(f))
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goto fail_sec;
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tsk = current;
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INIT_LIST_HEAD(&f->f_u.fu_list);
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atomic_long_set(&f->f_count, 1);
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rwlock_init(&f->f_owner.lock);
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f->f_uid = tsk->cred->fsuid;
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f->f_gid = tsk->cred->fsgid;
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f->f_uid = cred->fsuid;
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f->f_gid = cred->fsgid;
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eventpoll_init_file(f);
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/* f->f_version: 0 */
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return f;
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@ -951,6 +951,7 @@ struct file *hugetlb_file_setup(const char *name, size_t size)
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struct inode *inode;
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struct dentry *dentry, *root;
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struct qstr quick_string;
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struct user_struct *user = current_user();
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if (!hugetlbfs_vfsmount)
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return ERR_PTR(-ENOENT);
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@ -958,7 +959,7 @@ struct file *hugetlb_file_setup(const char *name, size_t size)
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if (!can_do_hugetlb_shm())
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return ERR_PTR(-EPERM);
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if (!user_shm_lock(size, current->cred->user))
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if (!user_shm_lock(size, user))
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return ERR_PTR(-ENOMEM);
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root = hugetlbfs_vfsmount->mnt_root;
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@ -998,7 +999,7 @@ out_inode:
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out_dentry:
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dput(dentry);
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out_shm_unlock:
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user_shm_unlock(size, current->cred->user);
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user_shm_unlock(size, user);
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return ERR_PTR(error);
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}
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@ -123,7 +123,7 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
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break;
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case IOPRIO_WHO_USER:
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if (!who)
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user = current->cred->user;
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user = current_user();
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else
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user = find_user(who);
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@ -216,7 +216,7 @@ asmlinkage long sys_ioprio_get(int which, int who)
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break;
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case IOPRIO_WHO_USER:
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if (!who)
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user = current->cred->user;
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user = current_user();
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else
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user = find_user(who);
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@ -667,8 +667,7 @@ smb_make_node(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
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attr.ia_valid = ATTR_MODE | ATTR_UID | ATTR_GID;
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attr.ia_mode = mode;
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attr.ia_uid = current_euid();
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attr.ia_gid = current_egid();
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current_euid_egid(&attr.ia_uid, &attr.ia_gid);
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if (!new_valid_dev(dev))
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return -EINVAL;
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@ -37,15 +37,16 @@ struct group_info {
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* get_group_info - Get a reference to a group info structure
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* @group_info: The group info to reference
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*
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* This must be called with the owning task locked (via task_lock()) when task
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* != current. The reason being that the vast majority of callers are looking
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* at current->group_info, which can not be changed except by the current task.
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* Changing current->group_info requires the task lock, too.
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* This gets a reference to a set of supplementary groups.
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*
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* If the caller is accessing a task's credentials, they must hold the RCU read
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* lock when reading.
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*/
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#define get_group_info(group_info) \
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do { \
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atomic_inc(&(group_info)->usage); \
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} while (0)
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static inline struct group_info *get_group_info(struct group_info *gi)
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{
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atomic_inc(&gi->usage);
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return gi;
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}
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/**
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* put_group_info - Release a reference to a group info structure
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@ -61,7 +62,7 @@ extern struct group_info *groups_alloc(int);
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extern void groups_free(struct group_info *);
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extern int set_current_groups(struct group_info *);
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extern int set_groups(struct cred *, struct group_info *);
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extern int groups_search(struct group_info *, gid_t);
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extern int groups_search(const struct group_info *, gid_t);
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/* access the groups "array" with this macro */
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#define GROUP_AT(gi, i) \
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@ -123,41 +124,6 @@ struct cred {
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spinlock_t lock; /* lock for pointer changes */
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};
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#define get_current_user() (get_uid(current->cred->user))
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#define task_uid(task) ((task)->cred->uid)
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#define task_gid(task) ((task)->cred->gid)
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#define task_euid(task) ((task)->cred->euid)
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#define task_egid(task) ((task)->cred->egid)
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#define current_uid() (current->cred->uid)
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#define current_gid() (current->cred->gid)
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#define current_euid() (current->cred->euid)
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#define current_egid() (current->cred->egid)
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#define current_suid() (current->cred->suid)
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#define current_sgid() (current->cred->sgid)
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#define current_fsuid() (current->cred->fsuid)
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#define current_fsgid() (current->cred->fsgid)
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#define current_cap() (current->cred->cap_effective)
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#define current_uid_gid(_uid, _gid) \
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do { \
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*(_uid) = current->cred->uid; \
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*(_gid) = current->cred->gid; \
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} while(0)
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#define current_euid_egid(_uid, _gid) \
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do { \
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*(_uid) = current->cred->euid; \
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*(_gid) = current->cred->egid; \
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} while(0)
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#define current_fsuid_fsgid(_uid, _gid) \
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do { \
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*(_uid) = current->cred->fsuid; \
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*(_gid) = current->cred->fsgid; \
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} while(0)
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extern void __put_cred(struct cred *);
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extern int copy_creds(struct task_struct *, unsigned long);
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@ -187,4 +153,137 @@ static inline void put_cred(struct cred *cred)
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__put_cred(cred);
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}
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/**
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* current_cred - Access the current task's credentials
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*
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* Access the credentials of the current task.
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*/
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#define current_cred() \
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(current->cred)
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/**
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* __task_cred - Access another task's credentials
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* @task: The task to query
|
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*
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* Access the credentials of another task. The caller must hold the
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* RCU readlock.
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*
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* The caller must make sure task doesn't go away, either by holding a ref on
|
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* task or by holding tasklist_lock to prevent it from being unlinked.
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*/
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#define __task_cred(task) \
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((const struct cred *)(rcu_dereference((task)->cred)))
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/**
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* get_task_cred - Get another task's credentials
|
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* @task: The task to query
|
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*
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* Get the credentials of a task, pinning them so that they can't go away.
|
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* Accessing a task's credentials directly is not permitted.
|
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*
|
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* The caller must make sure task doesn't go away, either by holding a ref on
|
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* task or by holding tasklist_lock to prevent it from being unlinked.
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*/
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#define get_task_cred(task) \
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({ \
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struct cred *__cred; \
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rcu_read_lock(); \
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__cred = (struct cred *) __task_cred((task)); \
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get_cred(__cred); \
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rcu_read_unlock(); \
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__cred; \
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})
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/**
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* get_current_cred - Get the current task's credentials
|
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*
|
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* Get the credentials of the current task, pinning them so that they can't go
|
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* away. Accessing the current task's credentials directly is not permitted.
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*/
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#define get_current_cred() \
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(get_cred(current_cred()))
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|
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/**
|
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* get_current_user - Get the current task's user_struct
|
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*
|
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* Get the user record of the current task, pinning it so that it can't go
|
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* away.
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*/
|
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#define get_current_user() \
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({ \
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struct user_struct *__u; \
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struct cred *__cred; \
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__cred = (struct cred *) current_cred(); \
|
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__u = get_uid(__cred->user); \
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__u; \
|
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})
|
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|
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/**
|
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* get_current_groups - Get the current task's supplementary group list
|
||||
*
|
||||
* Get the supplementary group list of the current task, pinning it so that it
|
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* can't go away.
|
||||
*/
|
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#define get_current_groups() \
|
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({ \
|
||||
struct group_info *__groups; \
|
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struct cred *__cred; \
|
||||
__cred = (struct cred *) current_cred(); \
|
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__groups = get_group_info(__cred->group_info); \
|
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__groups; \
|
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})
|
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|
||||
#define task_cred_xxx(task, xxx) \
|
||||
({ \
|
||||
__typeof__(task->cred->xxx) ___val; \
|
||||
rcu_read_lock(); \
|
||||
___val = __task_cred((task))->xxx; \
|
||||
rcu_read_unlock(); \
|
||||
___val; \
|
||||
})
|
||||
|
||||
#define task_uid(task) (task_cred_xxx((task), uid))
|
||||
#define task_euid(task) (task_cred_xxx((task), euid))
|
||||
|
||||
#define current_cred_xxx(xxx) \
|
||||
({ \
|
||||
current->cred->xxx; \
|
||||
})
|
||||
|
||||
#define current_uid() (current_cred_xxx(uid))
|
||||
#define current_gid() (current_cred_xxx(gid))
|
||||
#define current_euid() (current_cred_xxx(euid))
|
||||
#define current_egid() (current_cred_xxx(egid))
|
||||
#define current_suid() (current_cred_xxx(suid))
|
||||
#define current_sgid() (current_cred_xxx(sgid))
|
||||
#define current_fsuid() (current_cred_xxx(fsuid))
|
||||
#define current_fsgid() (current_cred_xxx(fsgid))
|
||||
#define current_cap() (current_cred_xxx(cap_effective))
|
||||
#define current_user() (current_cred_xxx(user))
|
||||
#define current_security() (current_cred_xxx(security))
|
||||
|
||||
#define current_uid_gid(_uid, _gid) \
|
||||
do { \
|
||||
const struct cred *__cred; \
|
||||
__cred = current_cred(); \
|
||||
*(_uid) = __cred->uid; \
|
||||
*(_gid) = __cred->gid; \
|
||||
} while(0)
|
||||
|
||||
#define current_euid_egid(_euid, _egid) \
|
||||
do { \
|
||||
const struct cred *__cred; \
|
||||
__cred = current_cred(); \
|
||||
*(_euid) = __cred->euid; \
|
||||
*(_egid) = __cred->egid; \
|
||||
} while(0)
|
||||
|
||||
#define current_fsuid_fsgid(_fsuid, _fsgid) \
|
||||
do { \
|
||||
const struct cred *__cred; \
|
||||
__cred = current_cred(); \
|
||||
*(_fsuid) = __cred->fsuid; \
|
||||
*(_fsgid) = __cred->fsgid; \
|
||||
} while(0)
|
||||
|
||||
#endif /* _LINUX_CRED_H */
|
||||
|
|
|
@ -32,7 +32,7 @@
|
|||
setting is locked or not. A setting which is locked cannot be
|
||||
changed from user-level. */
|
||||
#define issecure_mask(X) (1 << (X))
|
||||
#define issecure(X) (issecure_mask(X) & current->cred->securebits)
|
||||
#define issecure(X) (issecure_mask(X) & current_cred_xxx(securebits))
|
||||
|
||||
#define SECURE_ALL_BITS (issecure_mask(SECURE_NOROOT) | \
|
||||
issecure_mask(SECURE_NO_SETUID_FIXUP) | \
|
||||
|
|
|
@ -112,6 +112,7 @@ static inline struct mqueue_inode_info *MQUEUE_I(struct inode *inode)
|
|||
static struct inode *mqueue_get_inode(struct super_block *sb, int mode,
|
||||
struct mq_attr *attr)
|
||||
{
|
||||
struct user_struct *u = current_user();
|
||||
struct inode *inode;
|
||||
|
||||
inode = new_inode(sb);
|
||||
|
@ -126,7 +127,6 @@ static struct inode *mqueue_get_inode(struct super_block *sb, int mode,
|
|||
if (S_ISREG(mode)) {
|
||||
struct mqueue_inode_info *info;
|
||||
struct task_struct *p = current;
|
||||
struct user_struct *u = p->cred->user;
|
||||
unsigned long mq_bytes, mq_msg_tblsz;
|
||||
|
||||
inode->i_fop = &mqueue_file_operations;
|
||||
|
|
|
@ -366,7 +366,7 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
|
|||
if (shmflg & SHM_HUGETLB) {
|
||||
/* hugetlb_file_setup takes care of mlock user accounting */
|
||||
file = hugetlb_file_setup(name, size);
|
||||
shp->mlock_user = current->cred->user;
|
||||
shp->mlock_user = current_user();
|
||||
} else {
|
||||
int acctflag = VM_ACCOUNT;
|
||||
/*
|
||||
|
@ -767,7 +767,7 @@ asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf)
|
|||
goto out_unlock;
|
||||
|
||||
if(cmd==SHM_LOCK) {
|
||||
struct user_struct *user = current->cred->user;
|
||||
struct user_struct *user = current_user();
|
||||
if (!is_file_hugepages(shp->shm_file)) {
|
||||
err = shmem_lock(shp->shm_file, 1, user);
|
||||
if (!err && !(shp->shm_perm.mode & SHM_LOCKED)){
|
||||
|
|
59
kernel/sys.c
59
kernel/sys.c
|
@ -143,6 +143,7 @@ asmlinkage long sys_setpriority(int which, int who, int niceval)
|
|||
{
|
||||
struct task_struct *g, *p;
|
||||
struct user_struct *user;
|
||||
const struct cred *cred = current_cred();
|
||||
int error = -EINVAL;
|
||||
struct pid *pgrp;
|
||||
|
||||
|
@ -176,18 +177,18 @@ asmlinkage long sys_setpriority(int which, int who, int niceval)
|
|||
} while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
|
||||
break;
|
||||
case PRIO_USER:
|
||||
user = current->cred->user;
|
||||
user = cred->user;
|
||||
if (!who)
|
||||
who = current_uid();
|
||||
else
|
||||
if (who != current_uid() && !(user = find_user(who)))
|
||||
goto out_unlock; /* No processes for this user */
|
||||
who = cred->uid;
|
||||
else if ((who != cred->uid) &&
|
||||
!(user = find_user(who)))
|
||||
goto out_unlock; /* No processes for this user */
|
||||
|
||||
do_each_thread(g, p)
|
||||
if (p->cred->uid == who)
|
||||
if (__task_cred(p)->uid == who)
|
||||
error = set_one_prio(p, niceval, error);
|
||||
while_each_thread(g, p);
|
||||
if (who != current_uid())
|
||||
if (who != cred->uid)
|
||||
free_uid(user); /* For find_user() */
|
||||
break;
|
||||
}
|
||||
|
@ -207,6 +208,7 @@ asmlinkage long sys_getpriority(int which, int who)
|
|||
{
|
||||
struct task_struct *g, *p;
|
||||
struct user_struct *user;
|
||||
const struct cred *cred = current_cred();
|
||||
long niceval, retval = -ESRCH;
|
||||
struct pid *pgrp;
|
||||
|
||||
|
@ -238,21 +240,21 @@ asmlinkage long sys_getpriority(int which, int who)
|
|||
} while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
|
||||
break;
|
||||
case PRIO_USER:
|
||||
user = current->cred->user;
|
||||
user = (struct user_struct *) cred->user;
|
||||
if (!who)
|
||||
who = current_uid();
|
||||
else
|
||||
if (who != current_uid() && !(user = find_user(who)))
|
||||
goto out_unlock; /* No processes for this user */
|
||||
who = cred->uid;
|
||||
else if ((who != cred->uid) &&
|
||||
!(user = find_user(who)))
|
||||
goto out_unlock; /* No processes for this user */
|
||||
|
||||
do_each_thread(g, p)
|
||||
if (p->cred->uid == who) {
|
||||
if (__task_cred(p)->uid == who) {
|
||||
niceval = 20 - task_nice(p);
|
||||
if (niceval > retval)
|
||||
retval = niceval;
|
||||
}
|
||||
while_each_thread(g, p);
|
||||
if (who != current_uid())
|
||||
if (who != cred->uid)
|
||||
free_uid(user); /* for find_user() */
|
||||
break;
|
||||
}
|
||||
|
@ -743,11 +745,11 @@ asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid)
|
|||
|
||||
asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid)
|
||||
{
|
||||
struct cred *cred = current->cred;
|
||||
const struct cred *cred = current_cred();
|
||||
int retval;
|
||||
|
||||
if (!(retval = put_user(cred->uid, ruid)) &&
|
||||
!(retval = put_user(cred->euid, euid)))
|
||||
if (!(retval = put_user(cred->uid, ruid)) &&
|
||||
!(retval = put_user(cred->euid, euid)))
|
||||
retval = put_user(cred->suid, suid);
|
||||
|
||||
return retval;
|
||||
|
@ -796,11 +798,11 @@ asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid)
|
|||
|
||||
asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid)
|
||||
{
|
||||
struct cred *cred = current->cred;
|
||||
const struct cred *cred = current_cred();
|
||||
int retval;
|
||||
|
||||
if (!(retval = put_user(cred->gid, rgid)) &&
|
||||
!(retval = put_user(cred->egid, egid)))
|
||||
if (!(retval = put_user(cred->gid, rgid)) &&
|
||||
!(retval = put_user(cred->egid, egid)))
|
||||
retval = put_user(cred->sgid, sgid);
|
||||
|
||||
return retval;
|
||||
|
@ -1199,7 +1201,7 @@ static void groups_sort(struct group_info *group_info)
|
|||
}
|
||||
|
||||
/* a simple bsearch */
|
||||
int groups_search(struct group_info *group_info, gid_t grp)
|
||||
int groups_search(const struct group_info *group_info, gid_t grp)
|
||||
{
|
||||
unsigned int left, right;
|
||||
|
||||
|
@ -1268,13 +1270,8 @@ EXPORT_SYMBOL(set_current_groups);
|
|||
|
||||
asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist)
|
||||
{
|
||||
struct cred *cred = current->cred;
|
||||
int i = 0;
|
||||
|
||||
/*
|
||||
* SMP: Nobody else can change our grouplist. Thus we are
|
||||
* safe.
|
||||
*/
|
||||
const struct cred *cred = current_cred();
|
||||
int i;
|
||||
|
||||
if (gidsetsize < 0)
|
||||
return -EINVAL;
|
||||
|
@ -1330,8 +1327,9 @@ asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist)
|
|||
*/
|
||||
int in_group_p(gid_t grp)
|
||||
{
|
||||
struct cred *cred = current->cred;
|
||||
const struct cred *cred = current_cred();
|
||||
int retval = 1;
|
||||
|
||||
if (grp != cred->fsgid)
|
||||
retval = groups_search(cred->group_info, grp);
|
||||
return retval;
|
||||
|
@ -1341,8 +1339,9 @@ EXPORT_SYMBOL(in_group_p);
|
|||
|
||||
int in_egroup_p(gid_t grp)
|
||||
{
|
||||
struct cred *cred = current->cred;
|
||||
const struct cred *cred = current_cred();
|
||||
int retval = 1;
|
||||
|
||||
if (grp != cred->egid)
|
||||
retval = groups_search(cred->group_info, grp);
|
||||
return retval;
|
||||
|
|
|
@ -84,11 +84,12 @@ asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid)
|
|||
|
||||
asmlinkage long sys_getresuid16(old_uid_t __user *ruid, old_uid_t __user *euid, old_uid_t __user *suid)
|
||||
{
|
||||
const struct cred *cred = current_cred();
|
||||
int retval;
|
||||
|
||||
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);
|
||||
if (!(retval = put_user(high2lowuid(cred->uid), ruid)) &&
|
||||
!(retval = put_user(high2lowuid(cred->euid), euid)))
|
||||
retval = put_user(high2lowuid(cred->suid), suid);
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
@ -104,11 +105,12 @@ asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid)
|
|||
|
||||
asmlinkage long sys_getresgid16(old_gid_t __user *rgid, old_gid_t __user *egid, old_gid_t __user *sgid)
|
||||
{
|
||||
const struct cred *cred = current_cred();
|
||||
int retval;
|
||||
|
||||
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(high2lowgid(cred->gid), rgid)) &&
|
||||
!(retval = put_user(high2lowgid(cred->egid), egid)))
|
||||
retval = put_user(high2lowgid(cred->sgid), sgid);
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
@ -161,25 +163,24 @@ static int groups16_from_user(struct group_info *group_info,
|
|||
|
||||
asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist)
|
||||
{
|
||||
int i = 0;
|
||||
const struct cred *cred = current_cred();
|
||||
int i;
|
||||
|
||||
if (gidsetsize < 0)
|
||||
return -EINVAL;
|
||||
|
||||
get_group_info(current->cred->group_info);
|
||||
i = current->cred->group_info->ngroups;
|
||||
i = cred->group_info->ngroups;
|
||||
if (gidsetsize) {
|
||||
if (i > gidsetsize) {
|
||||
i = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
if (groups16_to_user(grouplist, current->cred->group_info)) {
|
||||
if (groups16_to_user(grouplist, cred->group_info)) {
|
||||
i = -EFAULT;
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
out:
|
||||
put_group_info(current->cred->group_info);
|
||||
return i;
|
||||
}
|
||||
|
||||
|
@ -210,20 +211,20 @@ asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist)
|
|||
|
||||
asmlinkage long sys_getuid16(void)
|
||||
{
|
||||
return high2lowuid(current->cred->uid);
|
||||
return high2lowuid(current_uid());
|
||||
}
|
||||
|
||||
asmlinkage long sys_geteuid16(void)
|
||||
{
|
||||
return high2lowuid(current->cred->euid);
|
||||
return high2lowuid(current_euid());
|
||||
}
|
||||
|
||||
asmlinkage long sys_getgid16(void)
|
||||
{
|
||||
return high2lowgid(current->cred->gid);
|
||||
return high2lowgid(current_gid());
|
||||
}
|
||||
|
||||
asmlinkage long sys_getegid16(void)
|
||||
{
|
||||
return high2lowgid(current->cred->egid);
|
||||
return high2lowgid(current_egid());
|
||||
}
|
||||
|
|
|
@ -44,7 +44,7 @@
|
|||
|
||||
static __inline__ int scm_check_creds(struct ucred *creds)
|
||||
{
|
||||
struct cred *cred = current->cred;
|
||||
const struct cred *cred = current_cred();
|
||||
|
||||
if ((creds->pid == task_tgid_vnr(current) || capable(CAP_SYS_ADMIN)) &&
|
||||
((creds->uid == cred->uid || creds->uid == cred->euid ||
|
||||
|
|
|
@ -350,16 +350,18 @@ EXPORT_SYMBOL_GPL(rpcauth_lookup_credcache);
|
|||
struct rpc_cred *
|
||||
rpcauth_lookupcred(struct rpc_auth *auth, int flags)
|
||||
{
|
||||
struct auth_cred acred = {
|
||||
.uid = current_fsuid(),
|
||||
.gid = current_fsgid(),
|
||||
.group_info = current->cred->group_info,
|
||||
};
|
||||
struct auth_cred acred;
|
||||
struct rpc_cred *ret;
|
||||
const struct cred *cred = current_cred();
|
||||
|
||||
dprintk("RPC: looking up %s cred\n",
|
||||
auth->au_ops->au_name);
|
||||
get_group_info(acred.group_info);
|
||||
|
||||
memset(&acred, 0, sizeof(acred));
|
||||
acred.uid = cred->fsuid;
|
||||
acred.gid = cred->fsgid;
|
||||
acred.group_info = get_group_info(((struct cred *)cred)->group_info);
|
||||
|
||||
ret = auth->au_ops->lookup_cred(auth, &acred, flags);
|
||||
put_group_info(acred.group_info);
|
||||
return ret;
|
||||
|
|
|
@ -641,7 +641,7 @@ int cap_task_setnice (struct task_struct *p, int nice)
|
|||
int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
|
||||
unsigned long arg4, unsigned long arg5, long *rc_p)
|
||||
{
|
||||
struct cred *cred = current->cred;
|
||||
struct cred *cred = current_cred();
|
||||
long error = 0;
|
||||
|
||||
switch (option) {
|
||||
|
|
|
@ -582,7 +582,7 @@ key_ref_t lookup_user_key(key_serial_t id, int create, int partial,
|
|||
{
|
||||
struct request_key_auth *rka;
|
||||
struct task_struct *t = current;
|
||||
struct cred *cred = t->cred;
|
||||
struct cred *cred = current_cred();
|
||||
struct key *key;
|
||||
key_ref_t key_ref, skey_ref;
|
||||
int ret;
|
||||
|
|
|
@ -67,6 +67,7 @@ static int call_sbin_request_key(struct key_construction *cons,
|
|||
void *aux)
|
||||
{
|
||||
struct task_struct *tsk = current;
|
||||
const struct cred *cred = current_cred();
|
||||
key_serial_t prkey, sskey;
|
||||
struct key *key = cons->key, *authkey = cons->authkey, *keyring;
|
||||
char *argv[9], *envp[3], uid_str[12], gid_str[12];
|
||||
|
@ -96,16 +97,16 @@ static int call_sbin_request_key(struct key_construction *cons,
|
|||
goto error_link;
|
||||
|
||||
/* record the UID and GID */
|
||||
sprintf(uid_str, "%d", current_fsuid());
|
||||
sprintf(gid_str, "%d", current_fsgid());
|
||||
sprintf(uid_str, "%d", cred->fsuid);
|
||||
sprintf(gid_str, "%d", cred->fsgid);
|
||||
|
||||
/* we say which key is under construction */
|
||||
sprintf(key_str, "%d", key->serial);
|
||||
|
||||
/* we specify the process's default keyrings */
|
||||
sprintf(keyring_str[0], "%d",
|
||||
tsk->cred->thread_keyring ?
|
||||
tsk->cred->thread_keyring->serial : 0);
|
||||
cred->thread_keyring ?
|
||||
cred->thread_keyring->serial : 0);
|
||||
|
||||
prkey = 0;
|
||||
if (tsk->signal->process_keyring)
|
||||
|
@ -118,7 +119,7 @@ static int call_sbin_request_key(struct key_construction *cons,
|
|||
sskey = rcu_dereference(tsk->signal->session_keyring)->serial;
|
||||
rcu_read_unlock();
|
||||
} else {
|
||||
sskey = tsk->cred->user->session_keyring->serial;
|
||||
sskey = cred->user->session_keyring->serial;
|
||||
}
|
||||
|
||||
sprintf(keyring_str[2], "%d", sskey);
|
||||
|
|
|
@ -39,9 +39,13 @@ EXPORT_SYMBOL_GPL(selinux_string_to_sid);
|
|||
int selinux_secmark_relabel_packet_permission(u32 sid)
|
||||
{
|
||||
if (selinux_enabled) {
|
||||
struct task_security_struct *tsec = current->cred->security;
|
||||
const struct task_security_struct *__tsec;
|
||||
u32 tsid;
|
||||
|
||||
return avc_has_perm(tsec->sid, sid, SECCLASS_PACKET,
|
||||
__tsec = current_security();
|
||||
tsid = __tsec->sid;
|
||||
|
||||
return avc_has_perm(tsid, sid, SECCLASS_PACKET,
|
||||
PACKET__RELABELTO, NULL);
|
||||
}
|
||||
return 0;
|
||||
|
|
|
@ -197,7 +197,7 @@ static int selinux_xfrm_sec_ctx_alloc(struct xfrm_sec_ctx **ctxp,
|
|||
struct xfrm_user_sec_ctx *uctx, u32 sid)
|
||||
{
|
||||
int rc = 0;
|
||||
struct task_security_struct *tsec = current->cred->security;
|
||||
const struct task_security_struct *tsec = current_security();
|
||||
struct xfrm_sec_ctx *ctx = NULL;
|
||||
char *ctx_str = NULL;
|
||||
u32 str_len;
|
||||
|
@ -333,7 +333,7 @@ void selinux_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
|
|||
*/
|
||||
int selinux_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
|
||||
{
|
||||
struct task_security_struct *tsec = current->cred->security;
|
||||
const struct task_security_struct *tsec = current_security();
|
||||
int rc = 0;
|
||||
|
||||
if (ctx) {
|
||||
|
@ -378,7 +378,7 @@ void selinux_xfrm_state_free(struct xfrm_state *x)
|
|||
*/
|
||||
int selinux_xfrm_state_delete(struct xfrm_state *x)
|
||||
{
|
||||
struct task_security_struct *tsec = current->cred->security;
|
||||
const struct task_security_struct *tsec = current_security();
|
||||
struct xfrm_sec_ctx *ctx = x->security;
|
||||
int rc = 0;
|
||||
|
||||
|
|
|
@ -164,7 +164,7 @@ int smk_curacc(char *obj_label, u32 mode)
|
|||
{
|
||||
int rc;
|
||||
|
||||
rc = smk_access(current->cred->security, obj_label, mode);
|
||||
rc = smk_access(current_security(), obj_label, mode);
|
||||
if (rc == 0)
|
||||
return 0;
|
||||
|
||||
|
|
|
@ -143,7 +143,7 @@ static int smack_ptrace_traceme(struct task_struct *ptp)
|
|||
static int smack_syslog(int type)
|
||||
{
|
||||
int rc;
|
||||
char *sp = current->cred->security;
|
||||
char *sp = current_security();
|
||||
|
||||
rc = cap_syslog(type);
|
||||
if (rc != 0)
|
||||
|
@ -375,7 +375,7 @@ static int smack_sb_umount(struct vfsmount *mnt, int flags)
|
|||
*/
|
||||
static int smack_inode_alloc_security(struct inode *inode)
|
||||
{
|
||||
inode->i_security = new_inode_smack(current->cred->security);
|
||||
inode->i_security = new_inode_smack(current_security());
|
||||
if (inode->i_security == NULL)
|
||||
return -ENOMEM;
|
||||
return 0;
|
||||
|
@ -820,7 +820,7 @@ static int smack_file_permission(struct file *file, int mask)
|
|||
*/
|
||||
static int smack_file_alloc_security(struct file *file)
|
||||
{
|
||||
file->f_security = current->cred->security;
|
||||
file->f_security = current_security();
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -918,7 +918,7 @@ static int smack_file_fcntl(struct file *file, unsigned int cmd,
|
|||
*/
|
||||
static int smack_file_set_fowner(struct file *file)
|
||||
{
|
||||
file->f_security = current->cred->security;
|
||||
file->f_security = current_security();
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -986,8 +986,7 @@ static int smack_file_receive(struct file *file)
|
|||
*/
|
||||
static int smack_cred_alloc_security(struct cred *cred)
|
||||
{
|
||||
cred->security = current->cred->security;
|
||||
|
||||
cred->security = current_security();
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -1225,7 +1224,7 @@ static void smack_task_to_inode(struct task_struct *p, struct inode *inode)
|
|||
*/
|
||||
static int smack_sk_alloc_security(struct sock *sk, int family, gfp_t gfp_flags)
|
||||
{
|
||||
char *csp = current->cred->security;
|
||||
char *csp = current_security();
|
||||
struct socket_smack *ssp;
|
||||
|
||||
ssp = kzalloc(sizeof(struct socket_smack), gfp_flags);
|
||||
|
@ -1450,7 +1449,7 @@ static int smack_flags_to_may(int flags)
|
|||
*/
|
||||
static int smack_msg_msg_alloc_security(struct msg_msg *msg)
|
||||
{
|
||||
msg->security = current->cred->security;
|
||||
msg->security = current_security();
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -1486,7 +1485,7 @@ static int smack_shm_alloc_security(struct shmid_kernel *shp)
|
|||
{
|
||||
struct kern_ipc_perm *isp = &shp->shm_perm;
|
||||
|
||||
isp->security = current->cred->security;
|
||||
isp->security = current_security();
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -1595,7 +1594,7 @@ static int smack_sem_alloc_security(struct sem_array *sma)
|
|||
{
|
||||
struct kern_ipc_perm *isp = &sma->sem_perm;
|
||||
|
||||
isp->security = current->cred->security;
|
||||
isp->security = current_security();
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -1699,7 +1698,7 @@ static int smack_msg_queue_alloc_security(struct msg_queue *msq)
|
|||
{
|
||||
struct kern_ipc_perm *kisp = &msq->q_perm;
|
||||
|
||||
kisp->security = current->cred->security;
|
||||
kisp->security = current_security();
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -1854,7 +1853,7 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
|
|||
struct super_block *sbp;
|
||||
struct superblock_smack *sbsp;
|
||||
struct inode_smack *isp;
|
||||
char *csp = current->cred->security;
|
||||
char *csp = current_security();
|
||||
char *fetched;
|
||||
char *final;
|
||||
struct dentry *dp;
|
||||
|
@ -2290,8 +2289,7 @@ static void smack_sock_graft(struct sock *sk, struct socket *parent)
|
|||
return;
|
||||
|
||||
ssp = sk->sk_security;
|
||||
ssp->smk_in = current->cred->security;
|
||||
ssp->smk_out = current->cred->security;
|
||||
ssp->smk_in = ssp->smk_out = current_security();
|
||||
ssp->smk_packet[0] = '\0';
|
||||
|
||||
rc = smack_netlabel(sk);
|
||||
|
|
|
@ -336,7 +336,7 @@ static void smk_cipso_doi(void)
|
|||
|
||||
audit_info.loginuid = audit_get_loginuid(current);
|
||||
audit_info.sessionid = audit_get_sessionid(current);
|
||||
audit_info.secid = smack_to_secid(current->cred->security);
|
||||
audit_info.secid = smack_to_secid(current_security());
|
||||
|
||||
rc = netlbl_cfg_map_del(NULL, &audit_info);
|
||||
if (rc != 0)
|
||||
|
@ -371,7 +371,7 @@ static void smk_unlbl_ambient(char *oldambient)
|
|||
|
||||
audit_info.loginuid = audit_get_loginuid(current);
|
||||
audit_info.sessionid = audit_get_sessionid(current);
|
||||
audit_info.secid = smack_to_secid(current->cred->security);
|
||||
audit_info.secid = smack_to_secid(current_security());
|
||||
|
||||
if (oldambient != NULL) {
|
||||
rc = netlbl_cfg_map_del(oldambient, &audit_info);
|
||||
|
|
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