diff options
Diffstat (limited to 'kernel/auditsc.c')
| -rw-r--r-- | kernel/auditsc.c | 284 |
1 files changed, 142 insertions, 142 deletions
diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 4b96415527b8..29e090cc0e46 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -113,8 +113,8 @@ struct audit_names { unsigned long ino; dev_t dev; umode_t mode; - uid_t uid; - gid_t gid; + kuid_t uid; + kgid_t gid; dev_t rdev; u32 osid; struct audit_cap_data fcap; @@ -149,8 +149,8 @@ struct audit_aux_data_execve { struct audit_aux_data_pids { struct audit_aux_data d; pid_t target_pid[AUDIT_AUX_PIDS]; - uid_t target_auid[AUDIT_AUX_PIDS]; - uid_t target_uid[AUDIT_AUX_PIDS]; + kuid_t target_auid[AUDIT_AUX_PIDS]; + kuid_t target_uid[AUDIT_AUX_PIDS]; unsigned int target_sessionid[AUDIT_AUX_PIDS]; u32 target_sid[AUDIT_AUX_PIDS]; char target_comm[AUDIT_AUX_PIDS][TASK_COMM_LEN]; @@ -208,14 +208,14 @@ struct audit_context { size_t sockaddr_len; /* Save things to print about task_struct */ pid_t pid, ppid; - uid_t uid, euid, suid, fsuid; - gid_t gid, egid, sgid, fsgid; + kuid_t uid, euid, suid, fsuid; + kgid_t gid, egid, sgid, fsgid; unsigned long personality; int arch; pid_t target_pid; - uid_t target_auid; - uid_t target_uid; + kuid_t target_auid; + kuid_t target_uid; unsigned int target_sessionid; u32 target_sid; char target_comm[TASK_COMM_LEN]; @@ -231,8 +231,8 @@ struct audit_context { long args[6]; } socketcall; struct { - uid_t uid; - gid_t gid; + kuid_t uid; + kgid_t gid; umode_t mode; u32 osid; int has_perm; @@ -464,37 +464,47 @@ static int match_tree_refs(struct audit_context *ctx, struct audit_tree *tree) return 0; } -static int audit_compare_id(uid_t uid1, - struct audit_names *name, - unsigned long name_offset, - struct audit_field *f, - struct audit_context *ctx) +static int audit_compare_uid(kuid_t uid, + struct audit_names *name, + struct audit_field *f, + struct audit_context *ctx) { struct audit_names *n; - unsigned long addr; - uid_t uid2; int rc; - - BUILD_BUG_ON(sizeof(uid_t) != sizeof(gid_t)); - + if (name) { - addr = (unsigned long)name; - addr += name_offset; - - uid2 = *(uid_t *)addr; - rc = audit_comparator(uid1, f->op, uid2); + rc = audit_uid_comparator(uid, f->op, name->uid); if (rc) return rc; } - + if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { - addr = (unsigned long)n; - addr += name_offset; - - uid2 = *(uid_t *)addr; + rc = audit_uid_comparator(uid, f->op, n->uid); + if (rc) + return rc; + } + } + return 0; +} - rc = audit_comparator(uid1, f->op, uid2); +static int audit_compare_gid(kgid_t gid, + struct audit_names *name, + struct audit_field *f, + struct audit_context *ctx) +{ + struct audit_names *n; + int rc; + + if (name) { + rc = audit_gid_comparator(gid, f->op, name->gid); + if (rc) + return rc; + } + + if (ctx) { + list_for_each_entry(n, &ctx->names_list, list) { + rc = audit_gid_comparator(gid, f->op, n->gid); if (rc) return rc; } @@ -511,80 +521,62 @@ static int audit_field_compare(struct task_struct *tsk, switch (f->val) { /* process to file object comparisons */ case AUDIT_COMPARE_UID_TO_OBJ_UID: - return audit_compare_id(cred->uid, - name, offsetof(struct audit_names, uid), - f, ctx); + return audit_compare_uid(cred->uid, name, f, ctx); case AUDIT_COMPARE_GID_TO_OBJ_GID: - return audit_compare_id(cred->gid, - name, offsetof(struct audit_names, gid), - f, ctx); + return audit_compare_gid(cred->gid, name, f, ctx); case AUDIT_COMPARE_EUID_TO_OBJ_UID: - return audit_compare_id(cred->euid, - name, offsetof(struct audit_names, uid), - f, ctx); + return audit_compare_uid(cred->euid, name, f, ctx); case AUDIT_COMPARE_EGID_TO_OBJ_GID: - return audit_compare_id(cred->egid, - name, offsetof(struct audit_names, gid), - f, ctx); + return audit_compare_gid(cred->egid, name, f, ctx); case AUDIT_COMPARE_AUID_TO_OBJ_UID: - return audit_compare_id(tsk->loginuid, - name, offsetof(struct audit_names, uid), - f, ctx); + return audit_compare_uid(tsk->loginuid, name, f, ctx); case AUDIT_COMPARE_SUID_TO_OBJ_UID: - return audit_compare_id(cred->suid, - name, offsetof(struct audit_names, uid), - f, ctx); + return audit_compare_uid(cred->suid, name, f, ctx); case AUDIT_COMPARE_SGID_TO_OBJ_GID: - return audit_compare_id(cred->sgid, - name, offsetof(struct audit_names, gid), - f, ctx); + return audit_compare_gid(cred->sgid, name, f, ctx); case AUDIT_COMPARE_FSUID_TO_OBJ_UID: - return audit_compare_id(cred->fsuid, - name, offsetof(struct audit_names, uid), - f, ctx); + return audit_compare_uid(cred->fsuid, name, f, ctx); case AUDIT_COMPARE_FSGID_TO_OBJ_GID: - return audit_compare_id(cred->fsgid, - name, offsetof(struct audit_names, gid), - f, ctx); + return audit_compare_gid(cred->fsgid, name, f, ctx); /* uid comparisons */ case AUDIT_COMPARE_UID_TO_AUID: - return audit_comparator(cred->uid, f->op, tsk->loginuid); + return audit_uid_comparator(cred->uid, f->op, tsk->loginuid); case AUDIT_COMPARE_UID_TO_EUID: - return audit_comparator(cred->uid, f->op, cred->euid); + return audit_uid_comparator(cred->uid, f->op, cred->euid); case AUDIT_COMPARE_UID_TO_SUID: - return audit_comparator(cred->uid, f->op, cred->suid); + return audit_uid_comparator(cred->uid, f->op, cred->suid); case AUDIT_COMPARE_UID_TO_FSUID: - return audit_comparator(cred->uid, f->op, cred->fsuid); + return audit_uid_comparator(cred->uid, f->op, cred->fsuid); /* auid comparisons */ case AUDIT_COMPARE_AUID_TO_EUID: - return audit_comparator(tsk->loginuid, f->op, cred->euid); + return audit_uid_comparator(tsk->loginuid, f->op, cred->euid); case AUDIT_COMPARE_AUID_TO_SUID: - return audit_comparator(tsk->loginuid, f->op, cred->suid); + return audit_uid_comparator(tsk->loginuid, f->op, cred->suid); case AUDIT_COMPARE_AUID_TO_FSUID: - return audit_comparator(tsk->loginuid, f->op, cred->fsuid); + return audit_uid_comparator(tsk->loginuid, f->op, cred->fsuid); /* euid comparisons */ case AUDIT_COMPARE_EUID_TO_SUID: - return audit_comparator(cred->euid, f->op, cred->suid); + return audit_uid_comparator(cred->euid, f->op, cred->suid); case AUDIT_COMPARE_EUID_TO_FSUID: - return audit_comparator(cred->euid, f->op, cred->fsuid); + return audit_uid_comparator(cred->euid, f->op, cred->fsuid); /* suid comparisons */ case AUDIT_COMPARE_SUID_TO_FSUID: - return audit_comparator(cred->suid, f->op, cred->fsuid); + return audit_uid_comparator(cred->suid, f->op, cred->fsuid); /* gid comparisons */ case AUDIT_COMPARE_GID_TO_EGID: - return audit_comparator(cred->gid, f->op, cred->egid); + return audit_gid_comparator(cred->gid, f->op, cred->egid); case AUDIT_COMPARE_GID_TO_SGID: - return audit_comparator(cred->gid, f->op, cred->sgid); + return audit_gid_comparator(cred->gid, f->op, cred->sgid); case AUDIT_COMPARE_GID_TO_FSGID: - return audit_comparator(cred->gid, f->op, cred->fsgid); + return audit_gid_comparator(cred->gid, f->op, cred->fsgid); /* egid comparisons */ case AUDIT_COMPARE_EGID_TO_SGID: - return audit_comparator(cred->egid, f->op, cred->sgid); + return audit_gid_comparator(cred->egid, f->op, cred->sgid); case AUDIT_COMPARE_EGID_TO_FSGID: - return audit_comparator(cred->egid, f->op, cred->fsgid); + return audit_gid_comparator(cred->egid, f->op, cred->fsgid); /* sgid comparison */ case AUDIT_COMPARE_SGID_TO_FSGID: - return audit_comparator(cred->sgid, f->op, cred->fsgid); + return audit_gid_comparator(cred->sgid, f->op, cred->fsgid); default: WARN(1, "Missing AUDIT_COMPARE define. Report as a bug\n"); return 0; @@ -630,28 +622,28 @@ static int audit_filter_rules(struct task_struct *tsk, } break; case AUDIT_UID: - result = audit_comparator(cred->uid, f->op, f->val); + result = audit_uid_comparator(cred->uid, f->op, f->uid); break; case AUDIT_EUID: - result = audit_comparator(cred->euid, f->op, f->val); + result = audit_uid_comparator(cred->euid, f->op, f->uid); break; case AUDIT_SUID: - result = audit_comparator(cred->suid, f->op, f->val); + result = audit_uid_comparator(cred->suid, f->op, f->uid); break; case AUDIT_FSUID: - result = audit_comparator(cred->fsuid, f->op, f->val); + result = audit_uid_comparator(cred->fsuid, f->op, f->uid); break; case AUDIT_GID: - result = audit_comparator(cred->gid, f->op, f->val); + result = audit_gid_comparator(cred->gid, f->op, f->gid); break; case AUDIT_EGID: - result = audit_comparator(cred->egid, f->op, f->val); + result = audit_gid_comparator(cred->egid, f->op, f->gid); break; case AUDIT_SGID: - result = audit_comparator(cred->sgid, f->op, f->val); + result = audit_gid_comparator(cred->sgid, f->op, f->gid); break; case AUDIT_FSGID: - result = audit_comparator(cred->fsgid, f->op, f->val); + result = audit_gid_comparator(cred->fsgid, f->op, f->gid); break; case AUDIT_PERS: result = audit_comparator(tsk->personality, f->op, f->val); @@ -717,10 +709,10 @@ static int audit_filter_rules(struct task_struct *tsk, break; case AUDIT_OBJ_UID: if (name) { - result = audit_comparator(name->uid, f->op, f->val); + result = audit_uid_comparator(name->uid, f->op, f->uid); } else if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { - if (audit_comparator(n->uid, f->op, f->val)) { + if (audit_uid_comparator(n->uid, f->op, f->uid)) { ++result; break; } @@ -729,10 +721,10 @@ static int audit_filter_rules(struct task_struct *tsk, break; case AUDIT_OBJ_GID: if (name) { - result = audit_comparator(name->gid, f->op, f->val); + result = audit_gid_comparator(name->gid, f->op, f->gid); } else if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { - if (audit_comparator(n->gid, f->op, f->val)) { + if (audit_gid_comparator(n->gid, f->op, f->gid)) { ++result; break; } @@ -750,7 +742,7 @@ static int audit_filter_rules(struct task_struct *tsk, case AUDIT_LOGINUID: result = 0; if (ctx) - result = audit_comparator(tsk->loginuid, f->op, f->val); + result = audit_uid_comparator(tsk->loginuid, f->op, f->uid); break; case AUDIT_SUBJ_USER: case AUDIT_SUBJ_ROLE: @@ -1154,13 +1146,44 @@ error_path: EXPORT_SYMBOL(audit_log_task_context); -static void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk) +void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk) { + const struct cred *cred; char name[sizeof(tsk->comm)]; struct mm_struct *mm = tsk->mm; struct vm_area_struct *vma; + char *tty; + + if (!ab) + return; /* tsk == current */ + cred = current_cred(); + + spin_lock_irq(&tsk->sighand->siglock); + if (tsk->signal && tsk->signal->tty && tsk->signal->tty->name) + tty = tsk->signal->tty->name; + else + tty = "(none)"; + spin_unlock_irq(&tsk->sighand->siglock); + + + audit_log_format(ab, + " ppid=%ld pid=%d auid=%u uid=%u gid=%u" + " euid=%u suid=%u fsuid=%u" + " egid=%u sgid=%u fsgid=%u ses=%u tty=%s", + sys_getppid(), + tsk->pid, + from_kuid(&init_user_ns, tsk->loginuid), + from_kuid(&init_user_ns, cred->uid), + from_kgid(&init_user_ns, cred->gid), + from_kuid(&init_user_ns, cred->euid), + from_kuid(&init_user_ns, cred->suid), + from_kuid(&init_user_ns, cred->fsuid), + from_kgid(&init_user_ns, cred->egid), + from_kgid(&init_user_ns, cred->sgid), + from_kgid(&init_user_ns, cred->fsgid), + tsk->sessionid, tty); get_task_comm(name, tsk); audit_log_format(ab, " comm="); @@ -1183,8 +1206,10 @@ static void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk audit_log_task_context(ab); } +EXPORT_SYMBOL(audit_log_task_info); + static int audit_log_pid_context(struct audit_context *context, pid_t pid, - uid_t auid, uid_t uid, unsigned int sessionid, + kuid_t auid, kuid_t uid, unsigned int sessionid, u32 sid, char *comm) { struct audit_buffer *ab; @@ -1196,8 +1221,9 @@ static int audit_log_pid_context(struct audit_context *context, pid_t pid, if (!ab) return rc; - audit_log_format(ab, "opid=%d oauid=%d ouid=%d oses=%d", pid, auid, - uid, sessionid); + audit_log_format(ab, "opid=%d oauid=%d ouid=%d oses=%d", pid, + from_kuid(&init_user_ns, auid), + from_kuid(&init_user_ns, uid), sessionid); if (security_secid_to_secctx(sid, &ctx, &len)) { audit_log_format(ab, " obj=(none)"); rc = 1; @@ -1447,7 +1473,9 @@ static void show_special(struct audit_context *context, int *call_panic) u32 osid = context->ipc.osid; audit_log_format(ab, "ouid=%u ogid=%u mode=%#ho", - context->ipc.uid, context->ipc.gid, context->ipc.mode); + from_kuid(&init_user_ns, context->ipc.uid), + from_kgid(&init_user_ns, context->ipc.gid), + context->ipc.mode); if (osid) { char *ctx = NULL; u32 len; @@ -1560,8 +1588,8 @@ static void audit_log_name(struct audit_context *context, struct audit_names *n, MAJOR(n->dev), MINOR(n->dev), n->mode, - n->uid, - n->gid, + from_kuid(&init_user_ns, n->uid), + from_kgid(&init_user_ns, n->gid), MAJOR(n->rdev), MINOR(n->rdev)); } @@ -1585,26 +1613,12 @@ static void audit_log_name(struct audit_context *context, struct audit_names *n, 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; - const char *tty; struct audit_names *n; /* tsk == current */ - context->pid = tsk->pid; - if (!context->ppid) - context->ppid = sys_getppid(); - 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); @@ -1619,32 +1633,13 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts (context->return_valid==AUDITSC_SUCCESS)?"yes":"no", context->return_code); - spin_lock_irq(&tsk->sighand->siglock); - if (tsk->signal && tsk->signal->tty && tsk->signal->tty->name) - tty = tsk->signal->tty->name; - else - tty = "(none)"; - 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" - " euid=%u suid=%u fsuid=%u" - " egid=%u sgid=%u fsgid=%u tty=%s ses=%u", - context->argv[0], - context->argv[1], - context->argv[2], - context->argv[3], - context->name_count, - context->ppid, - context->pid, - tsk->loginuid, - context->uid, - context->gid, - context->euid, context->suid, context->fsuid, - context->egid, context->sgid, context->fsgid, tty, - tsk->sessionid); - + " a0=%lx a1=%lx a2=%lx a3=%lx items=%d", + context->argv[0], + context->argv[1], + context->argv[2], + context->argv[3], + context->name_count); audit_log_task_info(ab, tsk); audit_log_key(ab, context->filterkey); @@ -2299,14 +2294,14 @@ static atomic_t session_id = ATOMIC_INIT(0); * * Called (set) from fs/proc/base.c::proc_loginuid_write(). */ -int audit_set_loginuid(uid_t loginuid) +int audit_set_loginuid(kuid_t loginuid) { struct task_struct *task = current; struct audit_context *context = task->audit_context; unsigned int sessionid; #ifdef CONFIG_AUDIT_LOGINUID_IMMUTABLE - if (task->loginuid != -1) + if (uid_valid(task->loginuid)) return -EPERM; #else /* CONFIG_AUDIT_LOGINUID_IMMUTABLE */ if (!capable(CAP_AUDIT_CONTROL)) @@ -2322,8 +2317,10 @@ int audit_set_loginuid(uid_t loginuid) 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), - task->loginuid, loginuid, + task->pid, + from_kuid(&init_user_ns, task_uid(task)), + from_kuid(&init_user_ns, task->loginuid), + from_kuid(&init_user_ns, loginuid), task->sessionid, sessionid); audit_log_end(ab); } @@ -2546,12 +2543,12 @@ int __audit_signal_info(int sig, struct task_struct *t) struct audit_aux_data_pids *axp; struct task_struct *tsk = current; struct audit_context *ctx = tsk->audit_context; - uid_t uid = current_uid(), t_uid = task_uid(t); + kuid_t uid = current_uid(), t_uid = task_uid(t); if (audit_pid && t->tgid == audit_pid) { if (sig == SIGTERM || sig == SIGHUP || sig == SIGUSR1 || sig == SIGUSR2) { audit_sig_pid = tsk->pid; - if (tsk->loginuid != -1) + if (uid_valid(tsk->loginuid)) audit_sig_uid = tsk->loginuid; else audit_sig_uid = uid; @@ -2672,8 +2669,8 @@ void __audit_mmap_fd(int fd, int flags) static void audit_log_abend(struct audit_buffer *ab, char *reason, long signr) { - uid_t auid, uid; - gid_t gid; + kuid_t auid, uid; + kgid_t gid; unsigned int sessionid; auid = audit_get_loginuid(current); @@ -2681,7 +2678,10 @@ static void audit_log_abend(struct audit_buffer *ab, char *reason, long signr) current_uid_gid(&uid, &gid); audit_log_format(ab, "auid=%u uid=%u gid=%u ses=%u", - auid, uid, gid, sessionid); + from_kuid(&init_user_ns, auid), + from_kuid(&init_user_ns, uid), + from_kgid(&init_user_ns, gid), + sessionid); audit_log_task_context(ab); audit_log_format(ab, " pid=%d comm=", current->pid); audit_log_untrustedstring(ab, current->comm); |