group */
WRITE_ONCE(current->self_exec_id, current->self_exec_id + 1);
flush_signal_handlers(current, 0);
+
+ /*
+ * install the new credentials for this executable
+ */
+ security_bprm_committing_creds(bprm);
+
+ commit_creds(bprm->cred);
+ bprm->cred = NULL;
+
+ /*
+ * Disable monitoring for regular users
+ * when executing setuid binaries. Must
+ * wait until new credentials are committed
+ * by commit_creds() above
+ */
+ if (get_dumpable(current->mm) != SUID_DUMP_USER)
+ perf_event_exit_task(current);
+ /*
+ * cred_guard_mutex must be held at least to this point to prevent
+ * ptrace_attach() from altering our determination of the task's
+ * credentials; any time after this it may be unlocked.
+ */
+ security_bprm_committed_creds(bprm);
+ mutex_unlock(¤t->signal->exec_update_mutex);
+ mutex_unlock(¤t->signal->cred_guard_mutex);
}
EXPORT_SYMBOL(setup_new_exec);
/*
* Prepare credentials and lock ->cred_guard_mutex.
- * install_exec_creds() commits the new creds and drops the lock.
+ * setup_new_exec() commits the new creds and drops the lock.
* Or, if exec fails before, free_bprm() should release ->cred and
* and unlock.
*/
}
EXPORT_SYMBOL(bprm_change_interp);
-/*
- * install the new credentials for this executable
- */
-void install_exec_creds(struct linux_binprm *bprm)
-{
- security_bprm_committing_creds(bprm);
-
- commit_creds(bprm->cred);
- bprm->cred = NULL;
-
- /*
- * Disable monitoring for regular users
- * when executing setuid binaries. Must
- * wait until new credentials are committed
- * by commit_creds() above
- */
- if (get_dumpable(current->mm) != SUID_DUMP_USER)
- perf_event_exit_task(current);
- /*
- * cred_guard_mutex must be held at least to this point to prevent
- * ptrace_attach() from altering our determination of the task's
- * credentials; any time after this it may be unlocked.
- */
- security_bprm_committed_creds(bprm);
- mutex_unlock(¤t->signal->exec_update_mutex);
- mutex_unlock(¤t->signal->cred_guard_mutex);
-}
-EXPORT_SYMBOL(install_exec_creds);
-
/*
* determine how safe it is to execute the proposed program
* - the caller must hold ->cred_guard_mutex to protect against
extern int bprm_change_interp(const char *interp, struct linux_binprm *bprm);
extern int copy_strings_kernel(int argc, const char *const *argv,
struct linux_binprm *bprm);
-extern void install_exec_creds(struct linux_binprm *bprm);
extern void set_binfmt(struct linux_binfmt *new);
extern ssize_t read_code(struct file *, unsigned long, loff_t, size_t);