[PATCH] examples/vm_power: fix format-truncation warning

[Kevin Traynor]

Without libbsd-devel strlcpy is defined as rte_strlcpy and a warning is
raised for format-truncation. Observed with gcc 15.2.1.

In function ‘rte_strlcpy’,
    inlined from ‘add_host_channels’ at
../examples/vm_power_manager/channel_manager.c:600:3:
../lib/eal/include/rte_string_fns.h:63:24:
warning: ‘%s’ directive output may be truncated writing up to
4095 bytes into a region of size 108 [-Wformat-truncation=]
63 |         return (size_t)snprintf(dst, size, "%s", src);
   |                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Check for truncation of socket_path[4096] into channel_path[108] to
remove warning.

Cc: stable at dpdk.org

Signed-off-by: Kevin Traynor <ktraynor at redhat.com>
---
 examples/vm_power_manager/channel_manager.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/examples/vm_power_manager/channel_manager.c b/examples/vm_power_manager/channel_manager.c
index 7d7efdd05a..b69449c61d 100644
--- a/examples/vm_power_manager/channel_manager.c
+++ b/examples/vm_power_manager/channel_manager.c
@@ -561,4 +561,5 @@ add_host_channels(void)
 	struct core_info *ci;
 	struct channel_info *chan_infos[RTE_MAX_LCORE];
+	size_t channel_path_size;
 	int i;
 
@@ -598,6 +599,13 @@ add_host_channels(void)
 		}
 		chan_infos[i] = chan_info;
-		strlcpy(chan_info->channel_path, socket_path,
-				sizeof(chan_info->channel_path));
+		channel_path_size = sizeof(chan_info->channel_path);
+		if (strlcpy(chan_info->channel_path, socket_path,
+			      channel_path_size) >= channel_path_size) {
+			RTE_LOG(ERR, CHANNEL_MANAGER, "Socket path is too long "
+				"'%s' >= %zu\n", socket_path, channel_path_size);
+			rte_free(chan_info);
+			chan_infos[i] = NULL;
+			goto error;
+		}
 
 		if (setup_host_channel_info(&chan_info, i) < 0) {
-- 
2.53.0