#include <linux/seq_file.h>
#endif
-RCSID
- ("$Header$");
#include "afs/sysincludes.h"
#include "afsincludes.h"
#include "afs/afs_stats.h" /* statistics */
#include "afs/nfsclient.h"
-#ifdef AFS_LINUX22_ENV
-#include "h/smp_lock.h"
-#endif
+#include <linux/smp_lock.h>
#ifdef AFS_LINUX26_ONEGROUP_ENV
#define NUMPAGGROUPS 1
#define NUMPAGGROUPS 2
#endif
-#if defined(AFS_LINUX26_ENV)
static int
afs_setgroups(cred_t **cr, struct group_info *group_info, int change_parent)
{
AFS_STATCNT(afs_setgroups);
- old_info = (*cr)->cr_group_info;
+ old_info = afs_cr_group_info(*cr);
get_group_info(group_info);
- (*cr)->cr_group_info = group_info;
+ afs_set_cr_group_info(*cr, group_info);
put_group_info(old_info);
crset(*cr);
return (0);
}
-#else
-static int
-afs_setgroups(cred_t **cr, int ngroups, gid_t * gidset, int change_parent)
-{
- int ngrps;
- int i;
- gid_t *gp;
-
- AFS_STATCNT(afs_setgroups);
-
- if (ngroups > NGROUPS)
- return EINVAL;
-
- gp = (*cr)->cr_groups;
- if (ngroups < NGROUPS)
- gp[ngroups] = (gid_t) NOGROUP;
-
- for (i = ngroups; i > 0; i--) {
- *gp++ = *gidset++;
- }
-
- (*cr)->cr_ngroups = ngroups;
- crset(*cr);
- return (0);
-}
-#endif
-
-#if defined(AFS_LINUX26_ENV)
-static struct group_info *
-afs_getgroups(cred_t * cr)
-{
- AFS_STATCNT(afs_getgroups);
-
- get_group_info(cr->cr_group_info);
- return cr->cr_group_info;
-}
-#else
/* Returns number of groups. And we trust groups to be large enough to
* hold all the groups.
*/
-static int
-afs_getgroups(cred_t *cr, gid_t *groups)
+static struct group_info *
+afs_getgroups(cred_t * cr)
{
- int i;
- int n;
- gid_t *gp;
-
AFS_STATCNT(afs_getgroups);
- gp = cr->cr_groups;
- n = cr->cr_ngroups;
-
- for (i = 0; (i < n) && (*gp != (gid_t) NOGROUP); i++)
- *groups++ = *gp++;
- return i;
-}
-#endif
-
-#if !defined(AFS_LINUX26_ENV)
-/* Only propogate the PAG to the parent process. Unix's propogate to
- * all processes sharing the cred.
- */
-int
-set_pag_in_parent(int pag, int g0, int g1)
-{
- int i;
-#ifdef STRUCT_TASK_STRUCT_HAS_PARENT
- gid_t *gp = current->parent->groups;
- int ngroups = current->parent->ngroups;
-#else
- gid_t *gp = current->p_pptr->groups;
- int ngroups = current->p_pptr->ngroups;
-#endif
-
- if ((ngroups < 2) || (afs_get_pag_from_groups(gp[0], gp[1]) == NOPAG)) {
- /* We will have to shift grouplist to make room for pag */
- if (ngroups + 2 > NGROUPS) {
- return EINVAL;
- }
- for (i = ngroups - 1; i >= 0; i--) {
- gp[i + 2] = gp[i];
- }
- ngroups += 2;
- }
- gp[0] = g0;
- gp[1] = g1;
- if (ngroups < NGROUPS)
- gp[ngroups] = NOGROUP;
-
-#ifdef STRUCT_TASK_STRUCT_HAS_PARENT
- current->parent->ngroups = ngroups;
-#else
- current->p_pptr->ngroups = ngroups;
-#endif
- return 0;
+ get_group_info(afs_cr_group_info(cr));
+ return afs_cr_group_info(cr);
}
-#endif
-#if defined(AFS_LINUX26_ENV)
int
__setpag(cred_t **cr, afs_uint32 pagvalue, afs_uint32 *newpag,
int change_parent)
{
struct group_info *group_info;
+#ifndef AFS_LINUX26_ONEGROUP_ENV
gid_t g0, g1;
+#endif
struct group_info *tmp;
int i;
#ifdef AFS_LINUX26_ONEGROUP_ENV
static struct key_type *__key_type_keyring = &key_type_keyring;
static int
-install_session_keyring(struct task_struct *task, struct key *keyring)
+install_session_keyring(struct key *keyring)
{
struct key *old;
char desc[20];
/* create an empty session keyring */
not_in_quota = KEY_ALLOC_IN_QUOTA;
- sprintf(desc, "_ses.%u", task->tgid);
+ sprintf(desc, "_ses.%u", current->tgid);
-#ifdef KEY_ALLOC_NEEDS_STRUCT_TASK
+#if defined(KEY_ALLOC_NEEDS_STRUCT_TASK)
keyring = key_alloc(__key_type_keyring, desc,
- task_uid(task), task_gid(task), task,
+ current_uid(), current_gid(), current,
+ (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_ALL,
+ not_in_quota);
+#elif defined(KEY_ALLOC_NEEDS_CRED)
+ keyring = key_alloc(__key_type_keyring, desc,
+ current_uid(), current_gid(), current_cred(),
(KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_ALL,
not_in_quota);
#else
keyring = key_alloc(__key_type_keyring, desc,
- task_uid(task), task_gid(task),
+ current_uid(), current_gid(),
(KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_ALL,
not_in_quota);
#endif
}
/* install the keyring */
- spin_lock_irq(&task->sighand->siglock);
- old = task_session_keyring(task);
+ spin_lock_irq(¤t->sighand->siglock);
+ old = task_session_keyring(current);
smp_wmb();
- task_session_keyring(task) = keyring;
- spin_unlock_irq(&task->sighand->siglock);
+ task_session_keyring(current) = keyring;
+ spin_unlock_irq(¤t->sighand->siglock);
if (old)
key_put(old);
}
#endif /* LINUX_KEYRING_SUPPORT */
-#else
-int
-__setpag(cred_t **cr, afs_uint32 pagvalue, afs_uint32 *newpag,
- int change_parent)
-{
- gid_t *gidset;
- afs_int32 ngroups, code = 0;
- int j;
-
- gidset = (gid_t *) osi_Alloc(NGROUPS * sizeof(gidset[0]));
- ngroups = afs_getgroups(*cr, gidset);
-
- if (afs_get_pag_from_groups(gidset[0], gidset[1]) == NOPAG) {
- /* We will have to shift grouplist to make room for pag */
- if (ngroups + 2 > NGROUPS) {
- osi_Free((char *)gidset, NGROUPS * sizeof(int));
- return EINVAL;
- }
- for (j = ngroups - 1; j >= 0; j--) {
- gidset[j + 2] = gidset[j];
- }
- ngroups += 2;
- }
- *newpag = (pagvalue == -1 ? genpag() : pagvalue);
- afs_get_groups_from_pag(*newpag, &gidset[0], &gidset[1]);
- code = afs_setgroups(cr, ngroups, gidset, change_parent);
-
- /* If change_parent is set, then we should set the pag in the parent as
- * well.
- */
- if (change_parent && !code) {
- code = set_pag_in_parent(*newpag, gidset[0], gidset[1]);
- }
-
- osi_Free((char *)gidset, NGROUPS * sizeof(int));
- return code;
-}
-#endif
-
-
int
setpag(cred_t **cr, afs_uint32 pagvalue, afs_uint32 *newpag,
int change_parent)
code = __setpag(cr, pagvalue, newpag, change_parent);
#ifdef LINUX_KEYRING_SUPPORT
- if (code == 0 && (*cr)->cr_rgid != NFSXLATOR_CRED) {
- (void) install_session_keyring(current, NULL);
+ if (code == 0 && afs_cr_rgid(*cr) != NFSXLATOR_CRED) {
+ (void) install_session_keyring(NULL);
if (current_session_keyring()) {
struct key *key;
perm = KEY_POS_VIEW | KEY_POS_SEARCH;
perm |= KEY_USR_VIEW | KEY_USR_SEARCH;
-#ifdef KEY_ALLOC_NEEDS_STRUCT_TASK
+#if defined(KEY_ALLOC_NEEDS_STRUCT_TASK)
key = key_alloc(&key_type_afs_pag, "_pag", 0, 0, current, perm, 1);
+#elif defined(KEY_ALLOC_NEEDS_CRED)
+ key = key_alloc(&key_type_afs_pag, "_pag", 0, 0, current_cred(), perm, 1);
#else
key = key_alloc(&key_type_afs_pag, "_pag", 0, 0, perm, 1);
#endif
return (-code);
}
-#if defined(AFS_LINUX24_ENV)
/* Intercept the standard uid32 system call. */
extern asmlinkage long (*sys_setgroups32p) (int gidsetsize, gid_t * grouplist);
asmlinkage long
/* Linux syscall ABI returns errno as negative */
return (-code);
}
-#endif
#if defined(AFS_PPC64_LINUX20_ENV)
/* Intercept the uid16 system call as used by 32bit programs. */
return (-code);
}
-#ifdef AFS_LINUX24_ENV
/* Intercept the uid32 system call as used by 32bit programs. */
extern long (*sys32_setgroups32p) (int gidsetsize, gid_t * grouplist);
asmlinkage long
return (-code);
}
#endif
-#endif
#ifdef LINUX_KEYRING_SUPPORT
void osi_keyring_init(void)
{
+#if !defined(EXPORTED_KEY_TYPE_KEYRING)
struct task_struct *p;
/* If we can't lock the tasklist, either with its explicit lock,
# endif
}
#endif
+#endif
register_key_type(&key_type_afs_pag);
}
unregister_key_type(&key_type_afs_pag);
}
+afs_int32
+osi_get_keyring_pag(afs_ucred_t *cred)
+{
+ struct key *key;
+ afs_uint32 newpag;
+ afs_int32 keyring_pag = NOPAG;
+
+ if (afs_cr_rgid(cred) != NFSXLATOR_CRED) {
+
+#if defined(STRUCT_TASK_HAS_CRED)
+ /* If we have a kernel cred, search the passed credentials */
+ if (cred->tgcred->session_keyring) {
+ key_ref_t key_ref;
+
+ key_ref = keyring_search(
+ make_key_ref(cred->tgcred->session_keyring, 1),
+ &key_type_afs_pag, "_pag");
+ if (IS_ERR(key_ref))
+ key = ERR_CAST(key_ref);
+ else
+ key = key_ref_to_ptr(key_ref);
+ } else {
+ key = ERR_PTR(-ENOKEY);
+ }
+#else
+ /* Search the keyrings of the current process */
+ key = request_key(&key_type_afs_pag, "_pag", NULL);
+#endif
+ if (!IS_ERR(key)) {
+ if (key_validate(key) == 0 && key->uid == 0) { /* also verify in the session keyring? */
+ keyring_pag = key->payload.value;
+ /* Only set PAG in groups if needed, and the creds are from the current process */
+#if defined(STRUCT_TASK_HAS_CRED)
+ if (cred == current_cred() && ((keyring_pag >> 24) & 0xff) == 'A') {
+#else
+ if (((keyring_pag >> 24) & 0xff) == 'A') {
+#endif
+ if (keyring_pag != afs_get_pag_from_groups(current_group_info()))
+ __setpag(&cred, keyring_pag, &newpag, 0);
+ }
+ }
+ key_put(key);
+ }
+ }
+ return keyring_pag;
+}
+
#else
void osi_keyring_init(void)
{
git://git.openafs.org / openafs.git / blobdiff