* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
+#define _LGPL_SOURCE
#define __USE_LINUX_IOCTL_DEFS
#include <sys/ioctl.h>
#include <string.h>
+#include <common/align.h>
+#include <errno.h>
#include "kernel-ctl.h"
#include "kernel-ioctl.h"
{
struct lttng_kernel_channel channel;
+ memset(&channel, 0, sizeof(channel));
if (lttng_kernel_use_old_abi) {
struct lttng_kernel_old_channel old_channel;
return ioctl(fd, LTTNG_KERNEL_CHANNEL, &channel);
}
-int kernctl_enable_syscall(int fd, const char *syscall_name)
+int kernctl_syscall_mask(int fd, char **syscall_mask, uint32_t *nr_bits)
{
- struct lttng_kernel_event event;
+ struct lttng_kernel_syscall_mask kmask_len, *kmask = NULL;
+ size_t array_alloc_len;
+ char *new_mask;
+ int ret = 0;
- memset(&event, 0, sizeof(event));
- strncpy(event.name, syscall_name, sizeof(event.name));
- event.name[sizeof(event.name) - 1] = '\0';
- event.instrumentation = LTTNG_KERNEL_SYSCALL;
- event.u.syscall.enable = 1;
- return ioctl(fd, LTTNG_KERNEL_EVENT, &event);
+ if (!syscall_mask) {
+ ret = -1;
+ goto end;
+ }
+
+ if (!nr_bits) {
+ ret = -1;
+ goto end;
+ }
+
+ kmask_len.len = 0;
+ ret = ioctl(fd, LTTNG_KERNEL_SYSCALL_MASK, &kmask_len);
+ if (ret) {
+ goto end;
+ }
+
+ array_alloc_len = ALIGN(kmask_len.len, 8) >> 3;
+
+ kmask = zmalloc(sizeof(*kmask) + array_alloc_len);
+ if (!kmask) {
+ ret = -1;
+ goto end;
+ }
+
+ kmask->len = kmask_len.len;
+ ret = ioctl(fd, LTTNG_KERNEL_SYSCALL_MASK, kmask);
+ if (ret) {
+ goto end;
+ }
+
+ new_mask = realloc(*syscall_mask, array_alloc_len);
+ if (!new_mask) {
+ ret = -1;
+ goto end;
+ }
+ memcpy(new_mask, kmask->mask, array_alloc_len);
+ *syscall_mask = new_mask;
+ *nr_bits = kmask->len;
+
+end:
+ free(kmask);
+ return ret;
}
-int kernctl_disable_syscall(int fd, const char *syscall_name)
+int kernctl_track_pid(int fd, int pid)
{
- struct lttng_kernel_event event;
+ return ioctl(fd, LTTNG_KERNEL_SESSION_TRACK_PID, pid);
+}
- memset(&event, 0, sizeof(event));
- strncpy(event.name, syscall_name, sizeof(event.name));
- event.name[sizeof(event.name) - 1] = '\0';
- event.instrumentation = LTTNG_KERNEL_SYSCALL;
- event.u.syscall.enable = 0;
- return ioctl(fd, LTTNG_KERNEL_EVENT, &event);
+int kernctl_untrack_pid(int fd, int pid)
+{
+ return ioctl(fd, LTTNG_KERNEL_SESSION_UNTRACK_PID, pid);
+}
+
+int kernctl_list_tracker_pids(int fd)
+{
+ return ioctl(fd, LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS);
}
int kernctl_create_stream(int fd)
LTTNG_KERNEL_SESSION_STOP);
}
+int kernctl_filter(int fd, struct lttng_filter_bytecode *filter)
+{
+ struct lttng_kernel_filter_bytecode *kb;
+ uint32_t len;
+ int ret;
+
+ /* Translate bytecode to kernel bytecode */
+ kb = zmalloc(sizeof(*kb) + filter->len);
+ if (!kb)
+ return -ENOMEM;
+ kb->len = len = filter->len;
+ kb->reloc_offset = filter->reloc_table_offset;
+ kb->seqnum = filter->seqnum;
+ memcpy(kb->data, filter->data, len);
+ ret = ioctl(fd, LTTNG_KERNEL_FILTER, kb);
+ free(kb);
+ return ret;
+}
+
int kernctl_tracepoint_list(int fd)
{
return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_TRACEPOINT_LIST,
return ret;
}
+int kernctl_tracer_abi_version(int fd,
+ struct lttng_kernel_tracer_abi_version *v)
+{
+ return ioctl(fd, LTTNG_KERNEL_TRACER_ABI_VERSION, v);
+}
+
int kernctl_wait_quiescent(int fd)
{
return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_WAIT_QUIESCENT,