lttng-abi: Document ioctl numbers reserved by lttng-abi-old.h

[lttng-modules.git] / lttng-abi.c

diff --git a/lttng-abi.c b/lttng-abi.c
index 0534472ad8c1a1189495fd73e5ccbbdf05477a82..5c6f384d8fc62c6b40a229a30d9036a0be9f3f9e 100644 (file)
--- a/lttng-abi.c
+++ b/lttng-abi.c
@@ -236,6 +236,44 @@ long lttng_abi_add_context(struct file *file,
        case LTTNG_KERNEL_CONTEXT_CALLSTACK_KERNEL:
        case LTTNG_KERNEL_CONTEXT_CALLSTACK_USER:
                return lttng_add_callstack_to_ctx(ctx, context_param->ctx);
+       case LTTNG_KERNEL_CONTEXT_CGROUP_NS:
+               return lttng_add_cgroup_ns_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_IPC_NS:
+               return lttng_add_ipc_ns_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_MNT_NS:
+               return lttng_add_mnt_ns_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_NET_NS:
+               return lttng_add_net_ns_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_PID_NS:
+               return lttng_add_pid_ns_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_USER_NS:
+               return lttng_add_user_ns_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_UTS_NS:
+               return lttng_add_uts_ns_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_UID:
+               return lttng_add_uid_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_EUID:
+               return lttng_add_euid_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_SUID:
+               return lttng_add_suid_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_GID:
+               return lttng_add_gid_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_EGID:
+               return lttng_add_egid_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_SGID:
+               return lttng_add_sgid_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_VUID:
+               return lttng_add_vuid_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_VEUID:
+               return lttng_add_veuid_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_VSUID:
+               return lttng_add_vsuid_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_VGID:
+               return lttng_add_vgid_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_VEGID:
+               return lttng_add_vegid_to_ctx(ctx);
+       case LTTNG_KERNEL_CONTEXT_VSGID:
+               return lttng_add_vsgid_to_ctx(ctx);
        default:
                return -EINVAL;
        }
@@ -419,8 +457,8 @@ int lttng_abi_create_channel(struct file *session_file,
                transport_name = "<unknown>";
                break;
        }
-       if (atomic_long_add_unless(&session_file->f_count,
-               1, INT_MAX) == INT_MAX) {
+       if (!atomic_long_add_unless(&session_file->f_count, 1, LONG_MAX)) {
+               ret = -EOVERFLOW;
                goto refcount_error;
        }
        /*
@@ -453,6 +491,40 @@ fd_error:
        return ret;
 }
 
+static
+int lttng_abi_session_set_name(struct lttng_session *session,
+               struct lttng_kernel_session_name *name)
+{
+       size_t len;
+
+       len = strnlen(name->name, LTTNG_KERNEL_SESSION_NAME_LEN);
+
+       if (len == LTTNG_KERNEL_SESSION_NAME_LEN) {
+               /* Name is too long/malformed */
+               return -EINVAL;
+       }
+
+       strcpy(session->name, name->name);
+       return 0;
+}
+
+static
+int lttng_abi_session_set_creation_time(struct lttng_session *session,
+               struct lttng_kernel_session_creation_time *time)
+{
+       size_t len;
+
+       len = strnlen(time->iso8601, LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN);
+
+       if (len == LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN) {
+               /* Time is too long/malformed */
+               return -EINVAL;
+       }
+
+       strcpy(session->creation_time, time->iso8601);
+       return 0;
+}
+
 /**
  *     lttng_session_ioctl - lttng session fd ioctl
  *
@@ -480,13 +552,12 @@ static
 long lttng_session_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
        struct lttng_session *session = file->private_data;
+       struct lttng_kernel_channel chan_param;
+       struct lttng_kernel_old_channel old_chan_param;
 
        switch (cmd) {
        case LTTNG_KERNEL_OLD_CHANNEL:
        {
-               struct lttng_kernel_channel chan_param;
-               struct lttng_kernel_old_channel old_chan_param;
-
                if (copy_from_user(&old_chan_param,
                                (struct lttng_kernel_old_channel __user *) arg,
                                sizeof(struct lttng_kernel_old_channel)))
@@ -503,8 +574,6 @@ long lttng_session_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
        }
        case LTTNG_KERNEL_CHANNEL:
        {
-               struct lttng_kernel_channel chan_param;
-
                if (copy_from_user(&chan_param,
                                (struct lttng_kernel_channel __user *) arg,
                                sizeof(struct lttng_kernel_channel)))
@@ -524,9 +593,6 @@ long lttng_session_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                return lttng_session_disable(session);
        case LTTNG_KERNEL_OLD_METADATA:
        {
-               struct lttng_kernel_channel chan_param;
-               struct lttng_kernel_old_channel old_chan_param;
-
                if (copy_from_user(&old_chan_param,
                                (struct lttng_kernel_old_channel __user *) arg,
                                sizeof(struct lttng_kernel_old_channel)))
@@ -543,8 +609,6 @@ long lttng_session_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
        }
        case LTTNG_KERNEL_METADATA:
        {
-               struct lttng_kernel_channel chan_param;
-
                if (copy_from_user(&chan_param,
                                        (struct lttng_kernel_channel __user *) arg,
                                        sizeof(struct lttng_kernel_channel)))
@@ -562,6 +626,26 @@ long lttng_session_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                return lttng_session_metadata_regenerate(session);
        case LTTNG_KERNEL_SESSION_STATEDUMP:
                return lttng_session_statedump(session);
+       case LTTNG_KERNEL_SESSION_SET_NAME:
+       {
+               struct lttng_kernel_session_name name;
+
+               if (copy_from_user(&name,
+                               (struct lttng_kernel_session_name __user *) arg,
+                               sizeof(struct lttng_kernel_session_name)))
+                       return -EFAULT;
+               return lttng_abi_session_set_name(session, &name);
+       }
+       case LTTNG_KERNEL_SESSION_SET_CREATION_TIME:
+       {
+               struct lttng_kernel_session_creation_time time;
+
+               if (copy_from_user(&time,
+                               (struct lttng_kernel_session_creation_time __user *) arg,
+                               sizeof(struct lttng_kernel_session_creation_time)))
+                       return -EFAULT;
+               return lttng_abi_session_set_creation_time(session, &time);
+       }
        default:
                return -ENOIOCTLCMD;
        }
@@ -1072,8 +1156,7 @@ int lttng_abi_create_event(struct file *channel_file,
                goto file_error;
        }
        /* The event holds a reference on the channel */
-       if (atomic_long_add_unless(&channel_file->f_count,
-               1, INT_MAX) == INT_MAX) {
+       if (!atomic_long_add_unless(&channel_file->f_count, 1, LONG_MAX)) {
                ret = -EOVERFLOW;
                goto refcount_error;
        }
@@ -1484,6 +1567,9 @@ long lttng_event_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                                (struct lttng_kernel_event_callsite __user *) arg);
                case LTTNG_TYPE_ENABLER:
                        return -EINVAL;
+               default:
+                       WARN_ON_ONCE(1);
+                       return -ENOSYS;
                }
        default:
                return -ENOIOCTLCMD;