From: Jo-Philipp Wich <jo@mein.io>
Date: Wed, 28 Aug 2019 10:19:29 +0000 (+0200)
Subject: probe: fallback to libblkid.so.1 when libblkid.so does not exist
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=6a61b9ac105b8eb28680e728a2723e302a91304d;p=project%2Ffstools.git

probe: fallback to libblkid.so.1 when libblkid.so does not exist

OpenWrt commit 0e70f69a35 ("treewide: revise library packaging") removed
the unversioned library symlink from the libblkid package, breaking
dynamic loading of the library at runtime.

Add a fallback to "libblkid.so.1" to allow using the dynamic library
for filesystem probing again.

Fixes: FS#2274
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
---

diff --git a/probe-libblkid.c b/probe-libblkid.c
index ad9f371..870965e 100644
--- a/probe-libblkid.c
+++ b/probe-libblkid.c
@@ -37,6 +37,9 @@ load_libblkid(void)
 	if (!libblkid.loaded) {
 		lib = dlopen("libblkid.so", RTLD_GLOBAL);
 
+		if (lib == NULL)
+			lib = dlopen("libblkid.so.1", RTLD_GLOBAL);
+
 		if (lib) {
 			libblkid.alloc  = dlsym(lib, "blkid_new_probe_from_filename");
 			libblkid.probe  = dlsym(lib, "blkid_do_probe");