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Merge branch 'audit.b39' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current

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* 'audit.b39' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
  [PATCH] get rid of AVC_PATH postponed treatment
  [PATCH] allow audit filtering on bit & operations
  [PATCH] audit: fix broken class-based syscall audit
  [PATCH] Make IPC mode consistent
This commit is contained in:
Linus Torvalds
2007-07-22 11:18:20 -07:00
parent dc79747019 4259fa01a2
commit dd6ccfe64d
4 changed files with 39 additions and 72 deletions
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13
kernel/auditfilter.c
View File

@ -304,7 +304,7 @@ int __init audit_register_class(int class, unsigned *list)
int audit_match_class(int class, unsigned syscall)
{
if (unlikely(syscall >= AUDIT_BITMASK_SIZE * sizeof(__u32)))
if (unlikely(syscall >= AUDIT_BITMASK_SIZE * 32))
return 0;
if (unlikely(class >= AUDIT_SYSCALL_CLASSES || !classes[class]))
return 0;
@ -456,6 +456,13 @@ static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
case AUDIT_DEVMINOR:
case AUDIT_EXIT:
case AUDIT_SUCCESS:
/* bit ops are only useful on syscall args */
if (f->op == AUDIT_BIT_MASK ||
f->op == AUDIT_BIT_TEST) {
err = -EINVAL;
goto exit_free;
}
break;
case AUDIT_ARG0:
case AUDIT_ARG1:
case AUDIT_ARG2:
@ -1566,6 +1573,10 @@ int audit_comparator(const u32 left, const u32 op, const u32 right)
return (left > right);
case AUDIT_GREATER_THAN_OR_EQUAL:
return (left >= right);
case AUDIT_BIT_MASK:
return (left & right);
case AUDIT_BIT_TEST:
return ((left & right) == right);
}
BUG();
return 0;

51
kernel/auditsc.c
View File

@ -173,12 +173,6 @@ struct audit_aux_data_fd_pair {
int fd[2];
};
struct audit_aux_data_path {
struct audit_aux_data d;
struct dentry *dentry;
struct vfsmount *mnt;
};
struct audit_aux_data_pids {
struct audit_aux_data d;
pid_t target_pid[AUDIT_AUX_PIDS];
@ -654,12 +648,6 @@ static inline void audit_free_aux(struct audit_context *context)
struct audit_aux_data *aux;
while ((aux = context->aux)) {
if (aux->type == AUDIT_AVC_PATH) {
struct audit_aux_data_path *axi = (void *)aux;
dput(axi->dentry);
mntput(axi->mnt);
}
context->aux = aux->next;
kfree(aux);
}
@ -995,7 +983,7 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
case AUDIT_IPC: {
struct audit_aux_data_ipcctl *axi = (void *)aux;
audit_log_format(ab,
"ouid=%u ogid=%u mode=%x",
"ouid=%u ogid=%u mode=%#o",
axi->uid, axi->gid, axi->mode);
if (axi->osid != 0) {
char *ctx = NULL;
@ -1014,7 +1002,7 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
case AUDIT_IPC_SET_PERM: {
struct audit_aux_data_ipcctl *axi = (void *)aux;
audit_log_format(ab,
"qbytes=%lx ouid=%u ogid=%u mode=%x",
"qbytes=%lx ouid=%u ogid=%u mode=%#o",
axi->qbytes, axi->uid, axi->gid, axi->mode);
break; }
@ -1038,11 +1026,6 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
audit_log_hex(ab, axs->a, axs->len);
break; }
case AUDIT_AVC_PATH: {
struct audit_aux_data_path *axi = (void *)aux;
audit_log_d_path(ab, "path=", axi->dentry, axi->mnt);
break; }
case AUDIT_FD_PAIR: {
struct audit_aux_data_fd_pair *axs = (void *)aux;
audit_log_format(ab, "fd0=%d fd1=%d", axs->fd[0], axs->fd[1]);
@ -1990,36 +1973,6 @@ void __audit_ptrace(struct task_struct *t)
selinux_get_task_sid(t, &context->target_sid);
}
/**
* audit_avc_path - record the granting or denial of permissions
* @dentry: dentry to record
* @mnt: mnt to record
*
* Returns 0 for success or NULL context or < 0 on error.
*
* Called from security/selinux/avc.c::avc_audit()
*/
int audit_avc_path(struct dentry *dentry, struct vfsmount *mnt)
{
struct audit_aux_data_path *ax;
struct audit_context *context = current->audit_context;
if (likely(!context))
return 0;
ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
if (!ax)
return -ENOMEM;
ax->dentry = dget(dentry);
ax->mnt = mntget(mnt);
ax->d.type = AUDIT_AVC_PATH;
ax->d.next = context->aux;
context->aux = (void *)ax;
return 0;
}
/**
* audit_signal_info - record signal info for shutting down audit subsystem
* @sig: signal value