[PATCH v2] system: replace openwrt_release with os-release

[Florian Eckert]

The information required for output via the ubus is currently read from
the file '/etc/openwrt_release'. The same information can also be found
under '/usr/lib/os-release'. This file contains further information and is
also the most common used file in other Linux distributions.

Let´s use '/usr/lib/os-release'.

Signed-off-by: Florian Eckert <fe at dev.tdt.de>
---
v2:
- fixed spelling

info:
This is a preparatory commit to make the 'SOURCE_DATE_EPOCH' information
also available via ubus [1]. The 'SOURCE_DATE_EPOCH' value is used for
reproducible builds. After the merge of this and the referenced [1] commit,
this information can also be made readable via the ubus. To do this, the
reading of '/usr/lib/os-release' must be extended.

[1] https://patchwork.ozlabs.org/project/openwrt/patch/20240618132343.3740920-1-fe@dev.tdt.de/

 system.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/system.c b/system.c
index 21ec3cd..dcc37e0 100644
--- a/system.c
+++ b/system.c
@@ -251,7 +251,7 @@ static int system_board(struct ubus_context *ctx, struct ubus_object *obj,
 	if (rootfs_type)
 		blobmsg_add_string(&b, "rootfs_type", rootfs_type);
 
-	if ((f = fopen("/etc/openwrt_release", "r")) != NULL)
+	if ((f = fopen("/usr/lib/os-release", "r")) != NULL)
 	{
 		c = blobmsg_open_table(&b, "release");
 
@@ -267,17 +267,17 @@ static int system_board(struct ubus_context *ctx, struct ubus_object *obj,
 
 			*(val++) = 0;
 
-			if (!strcasecmp(key, "DISTRIB_ID"))
+			if (!strcasecmp(key, "NAME"))
 				key = "distribution";
-			else if (!strcasecmp(key, "DISTRIB_RELEASE"))
+			else if (!strcasecmp(key, "VERSION"))
 				key = "version";
-			else if (!strcasecmp(key, "DISTRIB_REVISION"))
+			else if (!strcasecmp(key, "BUILD_ID"))
 				key = "revision";
-			else if (!strcasecmp(key, "DISTRIB_CODENAME"))
+			else if (!strcasecmp(key, "VERSION_CODENAME"))
 				key = "codename";
-			else if (!strcasecmp(key, "DISTRIB_TARGET"))
+			else if (!strcasecmp(key, "OPENWRT_BOARD"))
 				key = "target";
-			else if (!strcasecmp(key, "DISTRIB_DESCRIPTION"))
+			else if (!strcasecmp(key, "PRETTY_NAME"))
 				key = "description";
 			else
 				continue;
-- 
2.39.2