#include <asm/uaccess.h>
-/*
- * for_each_console() allows you to iterate on each console
- */
-#define for_each_console(con) \
- for (con = console_drivers; con != NULL; con = con->next)
-
/*
* Architectures can override it:
*/
* at open time.
*/
if (type == SYSLOG_ACTION_OPEN || !from_file) {
- if (dmesg_restrict && !capable(CAP_SYS_ADMIN))
- return -EPERM;
+ if (dmesg_restrict && !capable(CAP_SYSLOG))
+ goto warn; /* switch to return -EPERM after 2.6.39 */
if ((type != SYSLOG_ACTION_READ_ALL &&
type != SYSLOG_ACTION_SIZE_BUFFER) &&
- !capable(CAP_SYS_ADMIN))
- return -EPERM;
+ !capable(CAP_SYSLOG))
+ goto warn; /* switch to return -EPERM after 2.6.39 */
}
error = security_syslog(type);
}
out:
return error;
+warn:
+ /* remove after 2.6.39 */
+ if (capable(CAP_SYS_ADMIN))
+ WARN_ONCE(1, "Attempt to access syslog with CAP_SYS_ADMIN "
+ "but no CAP_SYSLOG (deprecated and denied).\n");
+ return -EPERM;
}
SYSCALL_DEFINE3(syslog, int, type, char __user *, buf, int, len)
void printk_tick(void)
{
- if (__get_cpu_var(printk_pending)) {
- __get_cpu_var(printk_pending) = 0;
+ if (__this_cpu_read(printk_pending)) {
+ __this_cpu_write(printk_pending, 0);
wake_up_interruptible(&log_wait);
}
}
int printk_needs_cpu(int cpu)
{
- if (unlikely(cpu_is_offline(cpu)))
+ if (cpu_is_offline(cpu))
printk_tick();
- return per_cpu(printk_pending, cpu);
+ return __this_cpu_read(printk_pending);
}
void wake_up_klogd(void)
spin_unlock_irqrestore(&logbuf_lock, flags);
}
release_console_sem();
+ console_sysfs_notify();
/*
* By unregistering the bootconsoles after we enable the real console
console_drivers->flags |= CON_CONSDEV;
release_console_sem();
+ console_sysfs_notify();
return res;
}
EXPORT_SYMBOL(unregister_console);