#include <linux/highmem.h>
#include <linux/syscalls.h>
#include <linux/inotify.h>
+#include <linux/capability.h>
+#include <linux/fs_struct.h>
#include "audit.h"
-extern struct list_head audit_filter_list[];
-extern int audit_ever_enabled;
-
/* AUDIT_NAMES is the number of slots we reserve in the audit_context
* for saving names from getname(). */
#define AUDIT_NAMES 20
/* determines whether we collect data for signals sent */
int audit_signals;
+struct audit_cap_data {
+ kernel_cap_t permitted;
+ kernel_cap_t inheritable;
+ union {
+ unsigned int fE; /* effective bit of a file capability */
+ kernel_cap_t effective; /* effective set of a process */
+ };
+};
+
/* When fs/namei.c:getname() is called, we store the pointer in name and
* we don't let putname() free it (instead we free all of the saved
* pointers at syscall exit time).
gid_t gid;
dev_t rdev;
u32 osid;
+ struct audit_cap_data fcap;
+ unsigned int fcap_ver;
};
struct audit_aux_data {
/* Number of target pids per aux struct. */
#define AUDIT_AUX_PIDS 16
-struct audit_aux_data_mq_open {
- struct audit_aux_data d;
- int oflag;
- mode_t mode;
- struct mq_attr attr;
-};
-
-struct audit_aux_data_mq_sendrecv {
- struct audit_aux_data d;
- mqd_t mqdes;
- size_t msg_len;
- unsigned int msg_prio;
- struct timespec abs_timeout;
-};
-
-struct audit_aux_data_mq_notify {
- struct audit_aux_data d;
- mqd_t mqdes;
- struct sigevent notification;
-};
-
-struct audit_aux_data_mq_getsetattr {
- struct audit_aux_data d;
- mqd_t mqdes;
- struct mq_attr mqstat;
-};
-
-struct audit_aux_data_ipcctl {
- struct audit_aux_data d;
- struct ipc_perm p;
- unsigned long qbytes;
- uid_t uid;
- gid_t gid;
- mode_t mode;
- u32 osid;
-};
-
struct audit_aux_data_execve {
struct audit_aux_data d;
int argc;
struct mm_struct *mm;
};
-struct audit_aux_data_socketcall {
- struct audit_aux_data d;
- int nargs;
- unsigned long args[0];
-};
-
-struct audit_aux_data_sockaddr {
- struct audit_aux_data d;
- int len;
- char a[0];
-};
-
-struct audit_aux_data_fd_pair {
- struct audit_aux_data d;
- int fd[2];
-};
-
struct audit_aux_data_pids {
struct audit_aux_data d;
pid_t target_pid[AUDIT_AUX_PIDS];
int pid_count;
};
+struct audit_aux_data_bprm_fcaps {
+ struct audit_aux_data d;
+ struct audit_cap_data fcap;
+ unsigned int fcap_ver;
+ struct audit_cap_data old_pcap;
+ struct audit_cap_data new_pcap;
+};
+
+struct audit_aux_data_capset {
+ struct audit_aux_data d;
+ pid_t pid;
+ struct audit_cap_data cap;
+};
+
struct audit_tree_refs {
struct audit_tree_refs *next;
struct audit_chunk *c[31];
struct audit_context {
int dummy; /* must be the first element */
int in_syscall; /* 1 if task is in a syscall */
- enum audit_state state;
+ enum audit_state state, current_state;
unsigned int serial; /* serial number for record */
- struct timespec ctime; /* time of syscall entry */
int major; /* syscall number */
+ struct timespec ctime; /* time of syscall entry */
unsigned long argv[4]; /* syscall arguments */
- int return_valid; /* return code is valid */
long return_code;/* syscall return code */
- int auditable; /* 1 if record should be written */
+ u64 prio;
+ int return_valid; /* return code is valid */
int name_count;
struct audit_names names[AUDIT_NAMES];
char * filterkey; /* key for rule that triggered record */
struct audit_context *previous; /* For nested syscalls */
struct audit_aux_data *aux;
struct audit_aux_data *aux_pids;
-
+ struct sockaddr_storage *sockaddr;
+ size_t sockaddr_len;
/* Save things to print about task_struct */
pid_t pid, ppid;
uid_t uid, euid, suid, fsuid;
char target_comm[TASK_COMM_LEN];
struct audit_tree_refs *trees, *first_trees;
+ struct list_head killed_trees;
int tree_count;
+ int type;
+ union {
+ struct {
+ int nargs;
+ long args[6];
+ } socketcall;
+ struct {
+ uid_t uid;
+ gid_t gid;
+ mode_t mode;
+ u32 osid;
+ int has_perm;
+ uid_t perm_uid;
+ gid_t perm_gid;
+ mode_t perm_mode;
+ unsigned long qbytes;
+ } ipc;
+ struct {
+ mqd_t mqdes;
+ struct mq_attr mqstat;
+ } mq_getsetattr;
+ struct {
+ mqd_t mqdes;
+ int sigev_signo;
+ } mq_notify;
+ struct {
+ mqd_t mqdes;
+ size_t msg_len;
+ unsigned int msg_prio;
+ struct timespec abs_timeout;
+ } mq_sendrecv;
+ struct {
+ int oflag;
+ mode_t mode;
+ struct mq_attr attr;
+ } mq_open;
+ struct {
+ pid_t pid;
+ struct audit_cap_data cap;
+ } capset;
+ };
+ int fds[2];
+
#if AUDIT_DEBUG
int put_count;
int ino_count;
#endif
};
-#define ACC_MODE(x) ("\004\002\006\006"[(x)&O_ACCMODE])
static inline int open_arg(int flags, int mask)
{
int n = ACC_MODE(flags);
static int audit_match_perm(struct audit_context *ctx, int mask)
{
- unsigned n = ctx->major;
+ unsigned n;
+ if (unlikely(!ctx))
+ return 0;
+ n = ctx->major;
+
switch (audit_classify_syscall(ctx->arch, n)) {
case 0: /* native */
if ((mask & AUDIT_PERM_WRITE) &&
}
}
+static int audit_match_filetype(struct audit_context *ctx, int which)
+{
+ unsigned index = which & ~S_IFMT;
+ mode_t mode = which & S_IFMT;
+
+ if (unlikely(!ctx))
+ return 0;
+
+ if (index >= ctx->name_count)
+ return 0;
+ if (ctx->names[index].ino == -1)
+ return 0;
+ if ((ctx->names[index].mode ^ mode) & S_IFMT)
+ return 0;
+ return 1;
+}
+
/*
* We keep a linked list of fixed-sized (31 pointer) arrays of audit_chunk *;
* ->first_trees points to its beginning, ->trees - to the current end of data.
*/
#ifdef CONFIG_AUDIT_TREE
+static void audit_set_auditable(struct audit_context *ctx)
+{
+ if (!ctx->prio) {
+ ctx->prio = 1;
+ ctx->current_state = AUDIT_RECORD_CONTEXT;
+ }
+}
+
static int put_tree_ref(struct audit_context *ctx, struct audit_chunk *chunk)
{
struct audit_tree_refs *p = ctx->trees;
struct audit_names *name,
enum audit_state *state)
{
+ const struct cred *cred = get_task_cred(tsk);
int i, j, need_sid = 1;
u32 sid;
}
break;
case AUDIT_UID:
- result = audit_comparator(tsk->uid, f->op, f->val);
+ result = audit_comparator(cred->uid, f->op, f->val);
break;
case AUDIT_EUID:
- result = audit_comparator(tsk->euid, f->op, f->val);
+ result = audit_comparator(cred->euid, f->op, f->val);
break;
case AUDIT_SUID:
- result = audit_comparator(tsk->suid, f->op, f->val);
+ result = audit_comparator(cred->suid, f->op, f->val);
break;
case AUDIT_FSUID:
- result = audit_comparator(tsk->fsuid, f->op, f->val);
+ result = audit_comparator(cred->fsuid, f->op, f->val);
break;
case AUDIT_GID:
- result = audit_comparator(tsk->gid, f->op, f->val);
+ result = audit_comparator(cred->gid, f->op, f->val);
break;
case AUDIT_EGID:
- result = audit_comparator(tsk->egid, f->op, f->val);
+ result = audit_comparator(cred->egid, f->op, f->val);
break;
case AUDIT_SGID:
- result = audit_comparator(tsk->sgid, f->op, f->val);
+ result = audit_comparator(cred->sgid, f->op, f->val);
break;
case AUDIT_FSGID:
- result = audit_comparator(tsk->fsgid, f->op, f->val);
+ result = audit_comparator(cred->fsgid, f->op, f->val);
break;
case AUDIT_PERS:
result = audit_comparator(tsk->personality, f->op, f->val);
}
break;
case AUDIT_WATCH:
- if (name && rule->watch->ino != (unsigned long)-1)
- result = (name->dev == rule->watch->dev &&
- name->ino == rule->watch->ino);
+ if (name && audit_watch_inode(rule->watch) != (unsigned long)-1)
+ result = (name->dev == audit_watch_dev(rule->watch) &&
+ name->ino == audit_watch_inode(rule->watch));
break;
case AUDIT_DIR:
if (ctx)
match for now to avoid losing information that
may be wanted. An error message will also be
logged upon error */
- if (f->se_rule) {
+ if (f->lsm_rule) {
if (need_sid) {
security_task_getsecid(tsk, &sid);
need_sid = 0;
}
result = security_audit_rule_match(sid, f->type,
f->op,
- f->se_rule,
+ f->lsm_rule,
ctx);
}
break;
case AUDIT_OBJ_LEV_HIGH:
/* The above note for AUDIT_SUBJ_USER...AUDIT_SUBJ_CLR
also applies here */
- if (f->se_rule) {
+ if (f->lsm_rule) {
/* Find files that match */
if (name) {
result = security_audit_rule_match(
name->osid, f->type, f->op,
- f->se_rule, ctx);
+ f->lsm_rule, ctx);
} else if (ctx) {
for (j = 0; j < ctx->name_count; j++) {
if (security_audit_rule_match(
ctx->names[j].osid,
f->type, f->op,
- f->se_rule, ctx)) {
+ f->lsm_rule, ctx)) {
++result;
break;
}
}
}
/* Find ipc objects that match */
- if (ctx) {
- struct audit_aux_data *aux;
- for (aux = ctx->aux; aux;
- aux = aux->next) {
- if (aux->type == AUDIT_IPC) {
- struct audit_aux_data_ipcctl *axi = (void *)aux;
- if (security_audit_rule_match(axi->osid, f->type, f->op, f->se_rule, ctx)) {
- ++result;
- break;
- }
- }
- }
- }
+ if (!ctx || ctx->type != AUDIT_IPC)
+ break;
+ if (security_audit_rule_match(ctx->ipc.osid,
+ f->type, f->op,
+ f->lsm_rule, ctx))
+ ++result;
}
break;
case AUDIT_ARG0:
case AUDIT_PERM:
result = audit_match_perm(ctx, f->val);
break;
+ case AUDIT_FILETYPE:
+ result = audit_match_filetype(ctx, f->val);
+ break;
}
- if (!result)
+ if (!result) {
+ put_cred(cred);
return 0;
+ }
+ }
+
+ if (ctx) {
+ if (rule->prio <= ctx->prio)
+ return 0;
+ if (rule->filterkey) {
+ kfree(ctx->filterkey);
+ ctx->filterkey = kstrdup(rule->filterkey, GFP_ATOMIC);
+ }
+ ctx->prio = rule->prio;
}
- if (rule->filterkey)
- ctx->filterkey = kstrdup(rule->filterkey, GFP_ATOMIC);
switch (rule->action) {
case AUDIT_NEVER: *state = AUDIT_DISABLED; break;
case AUDIT_ALWAYS: *state = AUDIT_RECORD_CONTEXT; break;
}
+ put_cred(cred);
return 1;
}
* completely disabled for this task. Since we only have the task
* structure at this point, we can only check uid and gid.
*/
-static enum audit_state audit_filter_task(struct task_struct *tsk)
+static enum audit_state audit_filter_task(struct task_struct *tsk, char **key)
{
struct audit_entry *e;
enum audit_state state;
rcu_read_lock();
list_for_each_entry_rcu(e, &audit_filter_list[AUDIT_FILTER_TASK], list) {
if (audit_filter_rules(tsk, &e->rule, NULL, NULL, &state)) {
+ if (state == AUDIT_RECORD_CONTEXT)
+ *key = kstrdup(e->rule.filterkey, GFP_ATOMIC);
rcu_read_unlock();
return state;
}
audit_filter_rules(tsk, &e->rule, ctx, NULL,
&state)) {
rcu_read_unlock();
+ ctx->current_state = state;
return state;
}
}
* buckets applicable to the inode numbers in audit_names[].
* Regarding audit_state, same rules apply as for audit_filter_syscall().
*/
-enum audit_state audit_filter_inodes(struct task_struct *tsk,
- struct audit_context *ctx)
+void audit_filter_inodes(struct task_struct *tsk, struct audit_context *ctx)
{
int i;
struct audit_entry *e;
enum audit_state state;
if (audit_pid && tsk->tgid == audit_pid)
- return AUDIT_DISABLED;
+ return;
rcu_read_lock();
for (i = 0; i < ctx->name_count; i++) {
if ((e->rule.mask[word] & bit) == bit &&
audit_filter_rules(tsk, &e->rule, ctx, n, &state)) {
rcu_read_unlock();
- return state;
+ ctx->current_state = state;
+ return;
}
}
}
rcu_read_unlock();
- return AUDIT_BUILD_CONTEXT;
-}
-
-void audit_set_auditable(struct audit_context *ctx)
-{
- ctx->auditable = 1;
}
static inline struct audit_context *audit_get_context(struct task_struct *tsk,
int return_valid,
- int return_code)
+ long return_code)
{
struct audit_context *context = tsk->audit_context;
else
context->return_code = return_code;
- if (context->in_syscall && !context->dummy && !context->auditable) {
- enum audit_state state;
-
- state = audit_filter_syscall(tsk, context, &audit_filter_list[AUDIT_FILTER_EXIT]);
- if (state == AUDIT_RECORD_CONTEXT) {
- context->auditable = 1;
- goto get_context;
- }
-
- state = audit_filter_inodes(tsk, context);
- if (state == AUDIT_RECORD_CONTEXT)
- context->auditable = 1;
-
+ if (context->in_syscall && !context->dummy) {
+ audit_filter_syscall(tsk, context, &audit_filter_list[AUDIT_FILTER_EXIT]);
+ audit_filter_inodes(tsk, context);
}
-get_context:
-
tsk->audit_context = NULL;
return context;
}
int i;
#if AUDIT_DEBUG == 2
- if (context->auditable
- ||context->put_count + context->ino_count != context->name_count) {
+ if (context->put_count + context->ino_count != context->name_count) {
printk(KERN_ERR "%s:%d(:%d): major=%d in_syscall=%d"
" name_count=%d put_count=%d"
" ino_count=%d [NOT freeing]\n",
{
memset(context, 0, sizeof(*context));
context->state = state;
+ context->prio = state == AUDIT_RECORD_CONTEXT ? ~0ULL : 0;
}
static inline struct audit_context *audit_alloc_context(enum audit_state state)
if (!(context = kmalloc(sizeof(*context), GFP_KERNEL)))
return NULL;
audit_zero_context(context, state);
+ INIT_LIST_HEAD(&context->killed_trees);
return context;
}
{
struct audit_context *context;
enum audit_state state;
+ char *key = NULL;
if (likely(!audit_ever_enabled))
return 0; /* Return if not auditing. */
- state = audit_filter_task(tsk);
+ state = audit_filter_task(tsk, &key);
if (likely(state == AUDIT_DISABLED))
return 0;
if (!(context = audit_alloc_context(state))) {
+ kfree(key);
audit_log_lost("out of memory in audit_alloc");
return -ENOMEM;
}
+ context->filterkey = key;
tsk->audit_context = context;
set_tsk_thread_flag(tsk, TIF_SYSCALL_AUDIT);
free_tree_refs(context);
audit_free_aux(context);
kfree(context->filterkey);
+ kfree(context->sockaddr);
kfree(context);
context = previous;
} while (context);
{
char arg_num_len_buf[12];
const char __user *tmp_p = p;
- /* how many digits are in arg_num? 3 is the length of a=\n */
- size_t arg_num_len = snprintf(arg_num_len_buf, 12, "%d", arg_num) + 3;
+ /* how many digits are in arg_num? 5 is the length of ' a=""' */
+ size_t arg_num_len = snprintf(arg_num_len_buf, 12, "%d", arg_num) + 5;
size_t len, len_left, to_send;
size_t max_execve_audit_len = MAX_EXECVE_AUDIT_LEN;
unsigned int i, has_cntl = 0, too_long = 0;
* so we can be sure nothing was lost.
*/
if ((i == 0) && (too_long))
- audit_log_format(*ab, "a%d_len=%zu ", arg_num,
+ audit_log_format(*ab, " a%d_len=%zu", arg_num,
has_cntl ? 2*len : len);
/*
buf[to_send] = '\0';
/* actually log it */
- audit_log_format(*ab, "a%d", arg_num);
+ audit_log_format(*ab, " a%d", arg_num);
if (too_long)
audit_log_format(*ab, "[%d]", i);
audit_log_format(*ab, "=");
if (has_cntl)
- audit_log_hex(*ab, buf, to_send);
+ audit_log_n_hex(*ab, buf, to_send);
else
- audit_log_format(*ab, "\"%s\"", buf);
- audit_log_format(*ab, "\n");
+ audit_log_string(*ab, buf);
p += to_send;
len_left -= to_send;
p = (const char __user *)axi->mm->arg_start;
- audit_log_format(*ab, "argc=%d ", axi->argc);
+ audit_log_format(*ab, "argc=%d", axi->argc);
/*
* we need some kernel buffer to hold the userspace args. Just
kfree(buf);
}
+static void audit_log_cap(struct audit_buffer *ab, char *prefix, kernel_cap_t *cap)
+{
+ int i;
+
+ audit_log_format(ab, " %s=", prefix);
+ CAP_FOR_EACH_U32(i) {
+ audit_log_format(ab, "%08x", cap->cap[(_KERNEL_CAPABILITY_U32S-1) - i]);
+ }
+}
+
+static void audit_log_fcaps(struct audit_buffer *ab, struct audit_names *name)
+{
+ kernel_cap_t *perm = &name->fcap.permitted;
+ kernel_cap_t *inh = &name->fcap.inheritable;
+ int log = 0;
+
+ if (!cap_isclear(*perm)) {
+ audit_log_cap(ab, "cap_fp", perm);
+ log = 1;
+ }
+ if (!cap_isclear(*inh)) {
+ audit_log_cap(ab, "cap_fi", inh);
+ log = 1;
+ }
+
+ if (log)
+ audit_log_format(ab, " cap_fe=%d cap_fver=%x", name->fcap.fE, name->fcap_ver);
+}
+
+static void show_special(struct audit_context *context, int *call_panic)
+{
+ struct audit_buffer *ab;
+ int i;
+
+ ab = audit_log_start(context, GFP_KERNEL, context->type);
+ if (!ab)
+ return;
+
+ switch (context->type) {
+ case AUDIT_SOCKETCALL: {
+ int nargs = context->socketcall.nargs;
+ audit_log_format(ab, "nargs=%d", nargs);
+ for (i = 0; i < nargs; i++)
+ audit_log_format(ab, " a%d=%lx", i,
+ context->socketcall.args[i]);
+ break; }
+ case AUDIT_IPC: {
+ u32 osid = context->ipc.osid;
+
+ audit_log_format(ab, "ouid=%u ogid=%u mode=%#o",
+ context->ipc.uid, context->ipc.gid, context->ipc.mode);
+ if (osid) {
+ char *ctx = NULL;
+ u32 len;
+ if (security_secid_to_secctx(osid, &ctx, &len)) {
+ audit_log_format(ab, " osid=%u", osid);
+ *call_panic = 1;
+ } else {
+ audit_log_format(ab, " obj=%s", ctx);
+ security_release_secctx(ctx, len);
+ }
+ }
+ if (context->ipc.has_perm) {
+ audit_log_end(ab);
+ ab = audit_log_start(context, GFP_KERNEL,
+ AUDIT_IPC_SET_PERM);
+ audit_log_format(ab,
+ "qbytes=%lx ouid=%u ogid=%u mode=%#o",
+ context->ipc.qbytes,
+ context->ipc.perm_uid,
+ context->ipc.perm_gid,
+ context->ipc.perm_mode);
+ if (!ab)
+ return;
+ }
+ break; }
+ case AUDIT_MQ_OPEN: {
+ audit_log_format(ab,
+ "oflag=0x%x mode=%#o mq_flags=0x%lx mq_maxmsg=%ld "
+ "mq_msgsize=%ld mq_curmsgs=%ld",
+ context->mq_open.oflag, context->mq_open.mode,
+ context->mq_open.attr.mq_flags,
+ context->mq_open.attr.mq_maxmsg,
+ context->mq_open.attr.mq_msgsize,
+ context->mq_open.attr.mq_curmsgs);
+ break; }
+ case AUDIT_MQ_SENDRECV: {
+ audit_log_format(ab,
+ "mqdes=%d msg_len=%zd msg_prio=%u "
+ "abs_timeout_sec=%ld abs_timeout_nsec=%ld",
+ context->mq_sendrecv.mqdes,
+ context->mq_sendrecv.msg_len,
+ context->mq_sendrecv.msg_prio,
+ context->mq_sendrecv.abs_timeout.tv_sec,
+ context->mq_sendrecv.abs_timeout.tv_nsec);
+ break; }
+ case AUDIT_MQ_NOTIFY: {
+ audit_log_format(ab, "mqdes=%d sigev_signo=%d",
+ context->mq_notify.mqdes,
+ context->mq_notify.sigev_signo);
+ break; }
+ case AUDIT_MQ_GETSETATTR: {
+ struct mq_attr *attr = &context->mq_getsetattr.mqstat;
+ audit_log_format(ab,
+ "mqdes=%d mq_flags=0x%lx mq_maxmsg=%ld mq_msgsize=%ld "
+ "mq_curmsgs=%ld ",
+ context->mq_getsetattr.mqdes,
+ attr->mq_flags, attr->mq_maxmsg,
+ attr->mq_msgsize, attr->mq_curmsgs);
+ break; }
+ case AUDIT_CAPSET: {
+ audit_log_format(ab, "pid=%d", context->capset.pid);
+ audit_log_cap(ab, "cap_pi", &context->capset.cap.inheritable);
+ audit_log_cap(ab, "cap_pp", &context->capset.cap.permitted);
+ audit_log_cap(ab, "cap_pe", &context->capset.cap.effective);
+ break; }
+ }
+ audit_log_end(ab);
+}
+
static void audit_log_exit(struct audit_context *context, struct task_struct *tsk)
{
+ const struct cred *cred;
int i, call_panic = 0;
struct audit_buffer *ab;
struct audit_aux_data *aux;
context->pid = tsk->pid;
if (!context->ppid)
context->ppid = sys_getppid();
- context->uid = tsk->uid;
- context->gid = tsk->gid;
- context->euid = tsk->euid;
- context->suid = tsk->suid;
- context->fsuid = tsk->fsuid;
- context->egid = tsk->egid;
- context->sgid = tsk->sgid;
- context->fsgid = tsk->fsgid;
+ cred = current_cred();
+ context->uid = cred->uid;
+ context->gid = cred->gid;
+ context->euid = cred->euid;
+ context->suid = cred->suid;
+ context->fsuid = cred->fsuid;
+ context->egid = cred->egid;
+ context->sgid = cred->sgid;
+ context->fsgid = cred->fsgid;
context->personality = tsk->personality;
ab = audit_log_start(context, GFP_KERNEL, AUDIT_SYSCALL);
(context->return_valid==AUDITSC_SUCCESS)?"yes":"no",
context->return_code);
- mutex_lock(&tty_mutex);
- read_lock(&tasklist_lock);
+ spin_lock_irq(&tsk->sighand->siglock);
if (tsk->signal && tsk->signal->tty && tsk->signal->tty->name)
tty = tsk->signal->tty->name;
else
tty = "(none)";
- read_unlock(&tasklist_lock);
+ spin_unlock_irq(&tsk->sighand->siglock);
+
audit_log_format(ab,
" a0=%lx a1=%lx a2=%lx a3=%lx items=%d"
" ppid=%d pid=%d auid=%u uid=%u gid=%u"
context->egid, context->sgid, context->fsgid, tty,
tsk->sessionid);
- mutex_unlock(&tty_mutex);
audit_log_task_info(ab, tsk);
- if (context->filterkey) {
- audit_log_format(ab, " key=");
- audit_log_untrustedstring(ab, context->filterkey);
- } else
- audit_log_format(ab, " key=(null)");
+ audit_log_key(ab, context->filterkey);
audit_log_end(ab);
for (aux = context->aux; aux; aux = aux->next) {
continue; /* audit_panic has been called */
switch (aux->type) {
- case AUDIT_MQ_OPEN: {
- struct audit_aux_data_mq_open *axi = (void *)aux;
- audit_log_format(ab,
- "oflag=0x%x mode=%#o mq_flags=0x%lx mq_maxmsg=%ld "
- "mq_msgsize=%ld mq_curmsgs=%ld",
- axi->oflag, axi->mode, axi->attr.mq_flags,
- axi->attr.mq_maxmsg, axi->attr.mq_msgsize,
- axi->attr.mq_curmsgs);
- break; }
-
- case AUDIT_MQ_SENDRECV: {
- struct audit_aux_data_mq_sendrecv *axi = (void *)aux;
- audit_log_format(ab,
- "mqdes=%d msg_len=%zd msg_prio=%u "
- "abs_timeout_sec=%ld abs_timeout_nsec=%ld",
- axi->mqdes, axi->msg_len, axi->msg_prio,
- axi->abs_timeout.tv_sec, axi->abs_timeout.tv_nsec);
- break; }
-
- case AUDIT_MQ_NOTIFY: {
- struct audit_aux_data_mq_notify *axi = (void *)aux;
- audit_log_format(ab,
- "mqdes=%d sigev_signo=%d",
- axi->mqdes,
- axi->notification.sigev_signo);
- break; }
-
- case AUDIT_MQ_GETSETATTR: {
- struct audit_aux_data_mq_getsetattr *axi = (void *)aux;
- audit_log_format(ab,
- "mqdes=%d mq_flags=0x%lx mq_maxmsg=%ld mq_msgsize=%ld "
- "mq_curmsgs=%ld ",
- axi->mqdes,
- axi->mqstat.mq_flags, axi->mqstat.mq_maxmsg,
- axi->mqstat.mq_msgsize, axi->mqstat.mq_curmsgs);
- break; }
-
- case AUDIT_IPC: {
- struct audit_aux_data_ipcctl *axi = (void *)aux;
- audit_log_format(ab,
- "ouid=%u ogid=%u mode=%#o",
- axi->uid, axi->gid, axi->mode);
- if (axi->osid != 0) {
- char *ctx = NULL;
- u32 len;
- if (security_secid_to_secctx(
- axi->osid, &ctx, &len)) {
- audit_log_format(ab, " osid=%u",
- axi->osid);
- call_panic = 1;
- } else {
- audit_log_format(ab, " obj=%s", ctx);
- security_release_secctx(ctx, len);
- }
- }
- break; }
-
- case AUDIT_IPC_SET_PERM: {
- struct audit_aux_data_ipcctl *axi = (void *)aux;
- audit_log_format(ab,
- "qbytes=%lx ouid=%u ogid=%u mode=%#o",
- axi->qbytes, axi->uid, axi->gid, axi->mode);
- break; }
case AUDIT_EXECVE: {
struct audit_aux_data_execve *axi = (void *)aux;
audit_log_execve_info(context, &ab, axi);
break; }
- case AUDIT_SOCKETCALL: {
- int i;
- struct audit_aux_data_socketcall *axs = (void *)aux;
- audit_log_format(ab, "nargs=%d", axs->nargs);
- for (i=0; i<axs->nargs; i++)
- audit_log_format(ab, " a%d=%lx", i, axs->args[i]);
+ case AUDIT_BPRM_FCAPS: {
+ struct audit_aux_data_bprm_fcaps *axs = (void *)aux;
+ audit_log_format(ab, "fver=%x", axs->fcap_ver);
+ audit_log_cap(ab, "fp", &axs->fcap.permitted);
+ audit_log_cap(ab, "fi", &axs->fcap.inheritable);
+ audit_log_format(ab, " fe=%d", axs->fcap.fE);
+ audit_log_cap(ab, "old_pp", &axs->old_pcap.permitted);
+ audit_log_cap(ab, "old_pi", &axs->old_pcap.inheritable);
+ audit_log_cap(ab, "old_pe", &axs->old_pcap.effective);
+ audit_log_cap(ab, "new_pp", &axs->new_pcap.permitted);
+ audit_log_cap(ab, "new_pi", &axs->new_pcap.inheritable);
+ audit_log_cap(ab, "new_pe", &axs->new_pcap.effective);
break; }
- case AUDIT_SOCKADDR: {
- struct audit_aux_data_sockaddr *axs = (void *)aux;
+ }
+ audit_log_end(ab);
+ }
- audit_log_format(ab, "saddr=");
- audit_log_hex(ab, axs->a, axs->len);
- break; }
+ if (context->type)
+ show_special(context, &call_panic);
- 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]);
- break; }
+ if (context->fds[0] >= 0) {
+ ab = audit_log_start(context, GFP_KERNEL, AUDIT_FD_PAIR);
+ if (ab) {
+ audit_log_format(ab, "fd0=%d fd1=%d",
+ context->fds[0], context->fds[1]);
+ audit_log_end(ab);
+ }
+ }
+ if (context->sockaddr_len) {
+ ab = audit_log_start(context, GFP_KERNEL, AUDIT_SOCKADDR);
+ if (ab) {
+ audit_log_format(ab, "saddr=");
+ audit_log_n_hex(ab, (void *)context->sockaddr,
+ context->sockaddr_len);
+ audit_log_end(ab);
}
- audit_log_end(ab);
}
for (aux = context->aux_pids; aux; aux = aux->next) {
struct audit_aux_data_pids *axs = (void *)aux;
- int i;
for (i = 0; i < axs->pid_count; i++)
if (audit_log_pid_context(context, axs->target_pid[i],
case 0:
/* name was specified as a relative path and the
* directory component is the cwd */
- audit_log_d_path(ab, " name=", &context->pwd);
+ audit_log_d_path(ab, "name=", &context->pwd);
break;
default:
/* log the name's directory component */
audit_log_format(ab, " name=");
- audit_log_n_untrustedstring(ab, n->name_len,
- n->name);
+ audit_log_n_untrustedstring(ab, n->name,
+ n->name_len);
}
} else
audit_log_format(ab, " name=(null)");
}
}
+ audit_log_fcaps(ab, n);
+
audit_log_end(ab);
}
* We use GFP_ATOMIC here because we might be doing this
* in the context of the idle thread */
/* that can happen only if we are called from do_exit() */
- if (context->in_syscall && context->auditable)
+ if (context->in_syscall && context->current_state == AUDIT_RECORD_CONTEXT)
audit_log_exit(context, tsk);
+ if (!list_empty(&context->killed_trees))
+ audit_kill_trees(&context->killed_trees);
audit_free_context(context);
}
/**
* audit_syscall_entry - fill in an audit record at syscall entry
- * @tsk: task being audited
* @arch: architecture type
* @major: major syscall type (function)
* @a1: additional syscall register 1
struct audit_context *context = tsk->audit_context;
enum audit_state state;
- BUG_ON(!context);
+ if (unlikely(!context))
+ return;
/*
* This happens only on certain architectures that make system
state = context->state;
context->dummy = !audit_n_rules;
- if (!context->dummy && (state == AUDIT_SETUP_CONTEXT || state == AUDIT_BUILD_CONTEXT))
+ if (!context->dummy && state == AUDIT_BUILD_CONTEXT) {
+ context->prio = 0;
state = audit_filter_syscall(tsk, context, &audit_filter_list[AUDIT_FILTER_ENTRY]);
+ }
if (likely(state == AUDIT_DISABLED))
return;
context->serial = 0;
context->ctime = CURRENT_TIME;
context->in_syscall = 1;
- context->auditable = !!(state == AUDIT_RECORD_CONTEXT);
+ context->current_state = state;
context->ppid = 0;
}
+void audit_finish_fork(struct task_struct *child)
+{
+ struct audit_context *ctx = current->audit_context;
+ struct audit_context *p = child->audit_context;
+ if (!p || !ctx)
+ return;
+ if (!ctx->in_syscall || ctx->current_state != AUDIT_RECORD_CONTEXT)
+ return;
+ p->arch = ctx->arch;
+ p->major = ctx->major;
+ memcpy(p->argv, ctx->argv, sizeof(ctx->argv));
+ p->ctime = ctx->ctime;
+ p->dummy = ctx->dummy;
+ p->in_syscall = ctx->in_syscall;
+ p->filterkey = kstrdup(ctx->filterkey, GFP_KERNEL);
+ p->ppid = current->pid;
+ p->prio = ctx->prio;
+ p->current_state = ctx->current_state;
+}
+
/**
* audit_syscall_exit - deallocate audit context after a system call
- * @tsk: task being audited
* @valid: success/failure flag
* @return_code: syscall return value
*
if (likely(!context))
return;
- if (context->in_syscall && context->auditable)
+ if (context->in_syscall && context->current_state == AUDIT_RECORD_CONTEXT)
audit_log_exit(context, tsk);
context->in_syscall = 0;
- context->auditable = 0;
+ context->prio = context->state == AUDIT_RECORD_CONTEXT ? ~0ULL : 0;
+
+ if (!list_empty(&context->killed_trees))
+ audit_kill_trees(&context->killed_trees);
if (context->previous) {
struct audit_context *new_context = context->previous;
context->aux_pids = NULL;
context->target_pid = 0;
context->target_sid = 0;
- kfree(context->filterkey);
- context->filterkey = NULL;
+ context->sockaddr_len = 0;
+ context->type = 0;
+ context->fds[0] = -1;
+ if (context->state != AUDIT_RECORD_CONTEXT) {
+ kfree(context->filterkey);
+ context->filterkey = NULL;
+ }
tsk->audit_context = context;
}
}
if (likely(put_tree_ref(context, chunk)))
return;
if (unlikely(!grow_tree_refs(context))) {
- printk(KERN_WARNING "out of memory, audit has lost a tree reference");
+ printk(KERN_WARNING "out of memory, audit has lost a tree reference\n");
audit_set_auditable(context);
audit_put_chunk(chunk);
unroll_tree_refs(context, p, count);
}
/* too bad */
printk(KERN_WARNING
- "out of memory, audit has lost a tree reference");
+ "out of memory, audit has lost a tree reference\n");
unroll_tree_refs(context, p, count);
audit_set_auditable(context);
return;
if (context->name_count >= AUDIT_NAMES) {
if (inode)
printk(KERN_DEBUG "name_count maxed, losing inode data: "
- "dev=%02x:%02x, inode=%lu",
+ "dev=%02x:%02x, inode=%lu\n",
MAJOR(inode->i_sb->s_dev),
MINOR(inode->i_sb->s_dev),
inode->i_ino);
else
- printk(KERN_DEBUG "name_count maxed, losing inode data");
+ printk(KERN_DEBUG "name_count maxed, losing inode data\n");
return 1;
}
context->name_count++;
return 0;
}
+
+static inline int audit_copy_fcaps(struct audit_names *name, const struct dentry *dentry)
+{
+ struct cpu_vfs_cap_data caps;
+ int rc;
+
+ memset(&name->fcap.permitted, 0, sizeof(kernel_cap_t));
+ memset(&name->fcap.inheritable, 0, sizeof(kernel_cap_t));
+ name->fcap.fE = 0;
+ name->fcap_ver = 0;
+
+ if (!dentry)
+ return 0;
+
+ rc = get_vfs_caps_from_disk(dentry, &caps);
+ if (rc)
+ return rc;
+
+ name->fcap.permitted = caps.permitted;
+ name->fcap.inheritable = caps.inheritable;
+ name->fcap.fE = !!(caps.magic_etc & VFS_CAP_FLAGS_EFFECTIVE);
+ name->fcap_ver = (caps.magic_etc & VFS_CAP_REVISION_MASK) >> VFS_CAP_REVISION_SHIFT;
+
+ return 0;
+}
+
+
/* Copy inode data into an audit_names. */
-static void audit_copy_inode(struct audit_names *name, const struct inode *inode)
+static void audit_copy_inode(struct audit_names *name, const struct dentry *dentry,
+ const struct inode *inode)
{
name->ino = inode->i_ino;
name->dev = inode->i_sb->s_dev;
name->gid = inode->i_gid;
name->rdev = inode->i_rdev;
security_inode_getsecid(inode, &name->osid);
+ audit_copy_fcaps(name, dentry);
}
/**
context->names[idx].name = NULL;
}
handle_path(dentry);
- audit_copy_inode(&context->names[idx], inode);
+ audit_copy_inode(&context->names[idx], dentry, inode);
}
/**
if (!strcmp(dname, n->name) ||
!audit_compare_dname_path(dname, n->name, &dirlen)) {
if (inode)
- audit_copy_inode(n, inode);
+ audit_copy_inode(n, NULL, inode);
else
n->ino = (unsigned long)-1;
found_child = n->name;
return;
idx = context->name_count - 1;
context->names[idx].name = NULL;
- audit_copy_inode(&context->names[idx], parent);
+ audit_copy_inode(&context->names[idx], NULL, parent);
}
if (!found_child) {
}
if (inode)
- audit_copy_inode(&context->names[idx], inode);
+ audit_copy_inode(&context->names[idx], NULL, inode);
else
context->names[idx].ino = (unsigned long)-1;
}
*
* Also sets the context as auditable.
*/
-void auditsc_get_stamp(struct audit_context *ctx,
+int auditsc_get_stamp(struct audit_context *ctx,
struct timespec *t, unsigned int *serial)
{
+ if (!ctx->in_syscall)
+ return 0;
if (!ctx->serial)
ctx->serial = audit_serial();
t->tv_sec = ctx->ctime.tv_sec;
t->tv_nsec = ctx->ctime.tv_nsec;
*serial = ctx->serial;
- ctx->auditable = 1;
+ if (!ctx->prio) {
+ ctx->prio = 1;
+ ctx->current_state = AUDIT_RECORD_CONTEXT;
+ }
+ return 1;
}
/* global counter which is incremented every time something logs in */
audit_log_format(ab, "login pid=%d uid=%u "
"old auid=%u new auid=%u"
" old ses=%u new ses=%u",
- task->pid, task->uid,
+ task->pid, task_uid(task),
task->loginuid, loginuid,
task->sessionid, sessionid);
audit_log_end(ab);
* __audit_mq_open - record audit data for a POSIX MQ open
* @oflag: open flag
* @mode: mode bits
- * @u_attr: queue attributes
+ * @attr: queue attributes
*
- * Returns 0 for success or NULL context or < 0 on error.
*/
-int __audit_mq_open(int oflag, mode_t mode, struct mq_attr __user *u_attr)
+void __audit_mq_open(int oflag, mode_t mode, struct mq_attr *attr)
{
- struct audit_aux_data_mq_open *ax;
struct audit_context *context = current->audit_context;
- if (!audit_enabled)
- return 0;
-
- if (likely(!context))
- return 0;
-
- ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
- if (!ax)
- return -ENOMEM;
-
- if (u_attr != NULL) {
- if (copy_from_user(&ax->attr, u_attr, sizeof(ax->attr))) {
- kfree(ax);
- return -EFAULT;
- }
- } else
- memset(&ax->attr, 0, sizeof(ax->attr));
+ if (attr)
+ memcpy(&context->mq_open.attr, attr, sizeof(struct mq_attr));
+ else
+ memset(&context->mq_open.attr, 0, sizeof(struct mq_attr));
- ax->oflag = oflag;
- ax->mode = mode;
+ context->mq_open.oflag = oflag;
+ context->mq_open.mode = mode;
- ax->d.type = AUDIT_MQ_OPEN;
- ax->d.next = context->aux;
- context->aux = (void *)ax;
- return 0;
+ context->type = AUDIT_MQ_OPEN;
}
/**
- * __audit_mq_timedsend - record audit data for a POSIX MQ timed send
+ * __audit_mq_sendrecv - record audit data for a POSIX MQ timed send/receive
* @mqdes: MQ descriptor
* @msg_len: Message length
* @msg_prio: Message priority
- * @u_abs_timeout: Message timeout in absolute time
+ * @abs_timeout: Message timeout in absolute time
*
- * Returns 0 for success or NULL context or < 0 on error.
*/
-int __audit_mq_timedsend(mqd_t mqdes, size_t msg_len, unsigned int msg_prio,
- const struct timespec __user *u_abs_timeout)
+void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio,
+ const struct timespec *abs_timeout)
{
- struct audit_aux_data_mq_sendrecv *ax;
struct audit_context *context = current->audit_context;
+ struct timespec *p = &context->mq_sendrecv.abs_timeout;
- if (!audit_enabled)
- return 0;
-
- if (likely(!context))
- return 0;
-
- ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
- if (!ax)
- return -ENOMEM;
-
- if (u_abs_timeout != NULL) {
- if (copy_from_user(&ax->abs_timeout, u_abs_timeout, sizeof(ax->abs_timeout))) {
- kfree(ax);
- return -EFAULT;
- }
- } else
- memset(&ax->abs_timeout, 0, sizeof(ax->abs_timeout));
-
- ax->mqdes = mqdes;
- ax->msg_len = msg_len;
- ax->msg_prio = msg_prio;
-
- ax->d.type = AUDIT_MQ_SENDRECV;
- ax->d.next = context->aux;
- context->aux = (void *)ax;
- return 0;
-}
-
-/**
- * __audit_mq_timedreceive - record audit data for a POSIX MQ timed receive
- * @mqdes: MQ descriptor
- * @msg_len: Message length
- * @u_msg_prio: Message priority
- * @u_abs_timeout: Message timeout in absolute time
- *
- * Returns 0 for success or NULL context or < 0 on error.
- */
-int __audit_mq_timedreceive(mqd_t mqdes, size_t msg_len,
- unsigned int __user *u_msg_prio,
- const struct timespec __user *u_abs_timeout)
-{
- struct audit_aux_data_mq_sendrecv *ax;
- struct audit_context *context = current->audit_context;
-
- if (!audit_enabled)
- return 0;
-
- if (likely(!context))
- return 0;
-
- ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
- if (!ax)
- return -ENOMEM;
-
- if (u_msg_prio != NULL) {
- if (get_user(ax->msg_prio, u_msg_prio)) {
- kfree(ax);
- return -EFAULT;
- }
- } else
- ax->msg_prio = 0;
-
- if (u_abs_timeout != NULL) {
- if (copy_from_user(&ax->abs_timeout, u_abs_timeout, sizeof(ax->abs_timeout))) {
- kfree(ax);
- return -EFAULT;
- }
- } else
- memset(&ax->abs_timeout, 0, sizeof(ax->abs_timeout));
+ if (abs_timeout)
+ memcpy(p, abs_timeout, sizeof(struct timespec));
+ else
+ memset(p, 0, sizeof(struct timespec));
- ax->mqdes = mqdes;
- ax->msg_len = msg_len;
+ context->mq_sendrecv.mqdes = mqdes;
+ context->mq_sendrecv.msg_len = msg_len;
+ context->mq_sendrecv.msg_prio = msg_prio;
- ax->d.type = AUDIT_MQ_SENDRECV;
- ax->d.next = context->aux;
- context->aux = (void *)ax;
- return 0;
+ context->type = AUDIT_MQ_SENDRECV;
}
/**
* __audit_mq_notify - record audit data for a POSIX MQ notify
* @mqdes: MQ descriptor
- * @u_notification: Notification event
+ * @notification: Notification event
*
- * Returns 0 for success or NULL context or < 0 on error.
*/
-int __audit_mq_notify(mqd_t mqdes, const struct sigevent __user *u_notification)
+void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
{
- struct audit_aux_data_mq_notify *ax;
struct audit_context *context = current->audit_context;
- if (!audit_enabled)
- return 0;
-
- if (likely(!context))
- return 0;
-
- ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
- if (!ax)
- return -ENOMEM;
-
- if (u_notification != NULL) {
- if (copy_from_user(&ax->notification, u_notification, sizeof(ax->notification))) {
- kfree(ax);
- return -EFAULT;
- }
- } else
- memset(&ax->notification, 0, sizeof(ax->notification));
-
- ax->mqdes = mqdes;
+ if (notification)
+ context->mq_notify.sigev_signo = notification->sigev_signo;
+ else
+ context->mq_notify.sigev_signo = 0;
- ax->d.type = AUDIT_MQ_NOTIFY;
- ax->d.next = context->aux;
- context->aux = (void *)ax;
- return 0;
+ context->mq_notify.mqdes = mqdes;
+ context->type = AUDIT_MQ_NOTIFY;
}
/**
* @mqdes: MQ descriptor
* @mqstat: MQ flags
*
- * Returns 0 for success or NULL context or < 0 on error.
*/
-int __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
+void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
{
- struct audit_aux_data_mq_getsetattr *ax;
struct audit_context *context = current->audit_context;
-
- if (!audit_enabled)
- return 0;
-
- if (likely(!context))
- return 0;
-
- ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
- if (!ax)
- return -ENOMEM;
-
- ax->mqdes = mqdes;
- ax->mqstat = *mqstat;
-
- ax->d.type = AUDIT_MQ_GETSETATTR;
- ax->d.next = context->aux;
- context->aux = (void *)ax;
- return 0;
+ context->mq_getsetattr.mqdes = mqdes;
+ context->mq_getsetattr.mqstat = *mqstat;
+ context->type = AUDIT_MQ_GETSETATTR;
}
/**
* audit_ipc_obj - record audit data for ipc object
* @ipcp: ipc permissions
*
- * Returns 0 for success or NULL context or < 0 on error.
*/
-int __audit_ipc_obj(struct kern_ipc_perm *ipcp)
+void __audit_ipc_obj(struct kern_ipc_perm *ipcp)
{
- struct audit_aux_data_ipcctl *ax;
struct audit_context *context = current->audit_context;
-
- ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
- if (!ax)
- return -ENOMEM;
-
- ax->uid = ipcp->uid;
- ax->gid = ipcp->gid;
- ax->mode = ipcp->mode;
- security_ipc_getsecid(ipcp, &ax->osid);
- ax->d.type = AUDIT_IPC;
- ax->d.next = context->aux;
- context->aux = (void *)ax;
- return 0;
+ context->ipc.uid = ipcp->uid;
+ context->ipc.gid = ipcp->gid;
+ context->ipc.mode = ipcp->mode;
+ context->ipc.has_perm = 0;
+ security_ipc_getsecid(ipcp, &context->ipc.osid);
+ context->type = AUDIT_IPC;
}
/**
* @gid: msgq group id
* @mode: msgq mode (permissions)
*
- * Returns 0 for success or NULL context or < 0 on error.
+ * Called only after audit_ipc_obj().
*/
-int __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode)
+void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode)
{
- struct audit_aux_data_ipcctl *ax;
struct audit_context *context = current->audit_context;
- ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
- if (!ax)
- return -ENOMEM;
-
- ax->qbytes = qbytes;
- ax->uid = uid;
- ax->gid = gid;
- ax->mode = mode;
-
- ax->d.type = AUDIT_IPC_SET_PERM;
- ax->d.next = context->aux;
- context->aux = (void *)ax;
- return 0;
+ context->ipc.qbytes = qbytes;
+ context->ipc.perm_uid = uid;
+ context->ipc.perm_gid = gid;
+ context->ipc.perm_mode = mode;
+ context->ipc.has_perm = 1;
}
int audit_bprm(struct linux_binprm *bprm)
* @nargs: number of args
* @args: args array
*
- * Returns 0 for success or NULL context or < 0 on error.
*/
-int audit_socketcall(int nargs, unsigned long *args)
+void audit_socketcall(int nargs, unsigned long *args)
{
- struct audit_aux_data_socketcall *ax;
struct audit_context *context = current->audit_context;
if (likely(!context || context->dummy))
- return 0;
-
- ax = kmalloc(sizeof(*ax) + nargs * sizeof(unsigned long), GFP_KERNEL);
- if (!ax)
- return -ENOMEM;
-
- ax->nargs = nargs;
- memcpy(ax->args, args, nargs * sizeof(unsigned long));
+ return;
- ax->d.type = AUDIT_SOCKETCALL;
- ax->d.next = context->aux;
- context->aux = (void *)ax;
- return 0;
+ context->type = AUDIT_SOCKETCALL;
+ context->socketcall.nargs = nargs;
+ memcpy(context->socketcall.args, args, nargs * sizeof(unsigned long));
}
/**
* @fd1: the first file descriptor
* @fd2: the second file descriptor
*
- * Returns 0 for success or NULL context or < 0 on error.
*/
-int __audit_fd_pair(int fd1, int fd2)
+void __audit_fd_pair(int fd1, int fd2)
{
struct audit_context *context = current->audit_context;
- struct audit_aux_data_fd_pair *ax;
-
- if (likely(!context)) {
- return 0;
- }
-
- ax = kmalloc(sizeof(*ax), GFP_KERNEL);
- if (!ax) {
- return -ENOMEM;
- }
-
- ax->fd[0] = fd1;
- ax->fd[1] = fd2;
-
- ax->d.type = AUDIT_FD_PAIR;
- ax->d.next = context->aux;
- context->aux = (void *)ax;
- return 0;
+ context->fds[0] = fd1;
+ context->fds[1] = fd2;
}
/**
*/
int audit_sockaddr(int len, void *a)
{
- struct audit_aux_data_sockaddr *ax;
struct audit_context *context = current->audit_context;
if (likely(!context || context->dummy))
return 0;
- ax = kmalloc(sizeof(*ax) + len, GFP_KERNEL);
- if (!ax)
- return -ENOMEM;
-
- ax->len = len;
- memcpy(ax->a, a, len);
+ if (!context->sockaddr) {
+ void *p = kmalloc(sizeof(struct sockaddr_storage), GFP_KERNEL);
+ if (!p)
+ return -ENOMEM;
+ context->sockaddr = p;
+ }
- ax->d.type = AUDIT_SOCKADDR;
- ax->d.next = context->aux;
- context->aux = (void *)ax;
+ context->sockaddr_len = len;
+ memcpy(context->sockaddr, a, len);
return 0;
}
context->target_pid = t->pid;
context->target_auid = audit_get_loginuid(t);
- context->target_uid = t->uid;
+ context->target_uid = task_uid(t);
context->target_sessionid = audit_get_sessionid(t);
security_task_getsecid(t, &context->target_sid);
memcpy(context->target_comm, t->comm, TASK_COMM_LEN);
struct audit_aux_data_pids *axp;
struct task_struct *tsk = current;
struct audit_context *ctx = tsk->audit_context;
- extern pid_t audit_sig_pid;
- extern uid_t audit_sig_uid;
- extern u32 audit_sig_sid;
+ uid_t uid = current_uid(), t_uid = task_uid(t);
if (audit_pid && t->tgid == audit_pid) {
- if (sig == SIGTERM || sig == SIGHUP || sig == SIGUSR1) {
+ if (sig == SIGTERM || sig == SIGHUP || sig == SIGUSR1 || sig == SIGUSR2) {
audit_sig_pid = tsk->pid;
if (tsk->loginuid != -1)
audit_sig_uid = tsk->loginuid;
else
- audit_sig_uid = tsk->uid;
+ audit_sig_uid = uid;
security_task_getsecid(tsk, &audit_sig_sid);
}
if (!audit_signals || audit_dummy_context())
if (!ctx->target_pid) {
ctx->target_pid = t->tgid;
ctx->target_auid = audit_get_loginuid(t);
- ctx->target_uid = t->uid;
+ ctx->target_uid = t_uid;
ctx->target_sessionid = audit_get_sessionid(t);
security_task_getsecid(t, &ctx->target_sid);
memcpy(ctx->target_comm, t->comm, TASK_COMM_LEN);
axp->target_pid[axp->pid_count] = t->tgid;
axp->target_auid[axp->pid_count] = audit_get_loginuid(t);
- axp->target_uid[axp->pid_count] = t->uid;
+ axp->target_uid[axp->pid_count] = t_uid;
axp->target_sessionid[axp->pid_count] = audit_get_sessionid(t);
security_task_getsecid(t, &axp->target_sid[axp->pid_count]);
memcpy(axp->target_comm[axp->pid_count], t->comm, TASK_COMM_LEN);
}
/**
+ * __audit_log_bprm_fcaps - store information about a loading bprm and relevant fcaps
+ * @bprm: pointer to the bprm being processed
+ * @new: the proposed new credentials
+ * @old: the old credentials
+ *
+ * Simply check if the proc already has the caps given by the file and if not
+ * store the priv escalation info for later auditing at the end of the syscall
+ *
+ * -Eric
+ */
+int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
+ const struct cred *new, const struct cred *old)
+{
+ struct audit_aux_data_bprm_fcaps *ax;
+ struct audit_context *context = current->audit_context;
+ struct cpu_vfs_cap_data vcaps;
+ struct dentry *dentry;
+
+ ax = kmalloc(sizeof(*ax), GFP_KERNEL);
+ if (!ax)
+ return -ENOMEM;
+
+ ax->d.type = AUDIT_BPRM_FCAPS;
+ ax->d.next = context->aux;
+ context->aux = (void *)ax;
+
+ dentry = dget(bprm->file->f_dentry);
+ get_vfs_caps_from_disk(dentry, &vcaps);
+ dput(dentry);
+
+ ax->fcap.permitted = vcaps.permitted;
+ ax->fcap.inheritable = vcaps.inheritable;
+ ax->fcap.fE = !!(vcaps.magic_etc & VFS_CAP_FLAGS_EFFECTIVE);
+ ax->fcap_ver = (vcaps.magic_etc & VFS_CAP_REVISION_MASK) >> VFS_CAP_REVISION_SHIFT;
+
+ ax->old_pcap.permitted = old->cap_permitted;
+ ax->old_pcap.inheritable = old->cap_inheritable;
+ ax->old_pcap.effective = old->cap_effective;
+
+ ax->new_pcap.permitted = new->cap_permitted;
+ ax->new_pcap.inheritable = new->cap_inheritable;
+ ax->new_pcap.effective = new->cap_effective;
+ return 0;
+}
+
+/**
+ * __audit_log_capset - store information about the arguments to the capset syscall
+ * @pid: target pid of the capset call
+ * @new: the new credentials
+ * @old: the old (current) credentials
+ *
+ * Record the aguments userspace sent to sys_capset for later printing by the
+ * audit system if applicable
+ */
+void __audit_log_capset(pid_t pid,
+ const struct cred *new, const struct cred *old)
+{
+ struct audit_context *context = current->audit_context;
+ context->capset.pid = pid;
+ context->capset.cap.effective = new->cap_effective;
+ context->capset.cap.inheritable = new->cap_effective;
+ context->capset.cap.permitted = new->cap_permitted;
+ context->type = AUDIT_CAPSET;
+}
+
+/**
* audit_core_dumps - record information about processes that end abnormally
* @signr: signal value
*
{
struct audit_buffer *ab;
u32 sid;
- uid_t auid = audit_get_loginuid(current);
+ uid_t auid = audit_get_loginuid(current), uid;
+ gid_t gid;
unsigned int sessionid = audit_get_sessionid(current);
if (!audit_enabled)
return;
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_ANOM_ABEND);
+ current_uid_gid(&uid, &gid);
audit_log_format(ab, "auid=%u uid=%u gid=%u ses=%u",
- auid, current->uid, current->gid, sessionid);
+ auid, uid, gid, sessionid);
security_task_getsecid(current, &sid);
if (sid) {
char *ctx = NULL;
audit_log_format(ab, " sig=%ld", signr);
audit_log_end(ab);
}
+
+struct list_head *audit_killed_trees(void)
+{
+ struct audit_context *ctx = current->audit_context;
+ if (likely(!ctx || !ctx->in_syscall))
+ return NULL;
+ return &ctx->killed_trees;
+}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff