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Diffstat (limited to '')
| -rw-r--r-- | examples/display-tree.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/examples/display-tree.c b/examples/display-tree.c new file mode 100644 index 0000000..b9ea75f --- /dev/null +++ b/examples/display-tree.c @@ -0,0 +1,72 @@ +// SPDX-License-Identifier: LGPL-2.1-or-later +/** + * This file is part of libnvme. + * Copyright (c) 2020 Western Digital Corporation or its affiliates. + * + * Authors: Keith Busch <keith.busch@wdc.com> + */ + +/** + * display-tree: Scans the nvme topology, prints as an ascii tree with some + * selected attributes for each component. + */ +#include <stdio.h> +#include <inttypes.h> +#include <libnvme.h> + +int main() +{ + nvme_root_t r; + nvme_host_t h; + nvme_subsystem_t s, _s; + nvme_ctrl_t c, _c; + nvme_path_t p, _p; + nvme_ns_t n, _n; + + r = nvme_scan(NULL); + if (!r) + return -1; + + printf(".\n"); + nvme_for_each_host(r, h) { + nvme_for_each_subsystem_safe(h, s, _s) { + printf("%c-- %s - NQN=%s\n", _s ? '|' : '`', + nvme_subsystem_get_name(s), + nvme_subsystem_get_nqn(s)); + + nvme_subsystem_for_each_ns_safe(s, n, _n) { + printf("%c |-- %s lba size:%d lba max:%" PRIu64 "\n", + _s ? '|' : ' ', + nvme_ns_get_name(n), + nvme_ns_get_lba_size(n), + nvme_ns_get_lba_count(n)); + } + + nvme_subsystem_for_each_ctrl_safe(s, c, _c) { + printf("%c %c-- %s %s %s %s\n", + _s ? '|' : ' ', _c ? '|' : '`', + nvme_ctrl_get_name(c), + nvme_ctrl_get_transport(c), + nvme_ctrl_get_address(c), + nvme_ctrl_get_state(c)); + + nvme_ctrl_for_each_ns_safe(c, n, _n) + printf("%c %c %c-- %s lba size:%d lba max:%" PRIu64 "\n", + _s ? '|' : ' ', _c ? '|' : ' ', + _n ? '|' : '`', + nvme_ns_get_name(n), + nvme_ns_get_lba_size(n), + nvme_ns_get_lba_count(n)); + + nvme_ctrl_for_each_path_safe(c, p, _p) + printf("%c %c %c-- %s %s\n", + _s ? '|' : ' ', _c ? '|' : ' ', + _p ? '|' : '`', + nvme_path_get_name(p), + nvme_path_get_ana_state(p)); + } + } + } + nvme_free_tree(r); + return 0; +} |