Bump required minimum version of blkid to 2.37

Major distributions already have blkid >= 2.37.
Let's bump the minimal required version.

Note, util-linux (which provides blkid) 2.37 was released on 2021-06-01.

See also #38608.

README

@@ -216,7 +216,7 @@ REQUIREMENTS:
         libmount >= 2.30 (from util-linux)
                 (util-linux *must* be built without --enable-libmount-support-mtab)
         libseccomp >= 2.3.1 (optional)
-        libblkid >= 2.24 (from util-linux) (optional)
+        libblkid >= 2.37 (from util-linux) (optional)
         libkmod >= 15 (optional)
         PAM >= 1.1.2 (optional)
         libcryptsetup >= 2.0.1 (optional),

meson.build

@@ -1229,10 +1229,9 @@ conf.set10('HAVE_AUDIT', libaudit.found())
 libaudit_cflags = libaudit.partial_dependency(includes: true, compile_args: true)
 
 libblkid = dependency('blkid',
+                      version : '>=2.37.0',
                       required : get_option('blkid'))
 conf.set10('HAVE_BLKID', libblkid.found())
-conf.set10('HAVE_BLKID_PROBE_SET_HINT',
-           libblkid.found() and cc.has_function('blkid_probe_set_hint', dependencies : libblkid))
 libblkid_cflags = libblkid.partial_dependency(includes: true, compile_args: true)
 
 libkmod = dependency('libkmod',

src/udev/udev-builtin-blkid.c

@@ -458,21 +458,11 @@ static int builtin_blkid(UdevEvent *event, int argc, char *argv[]) {
 
                 switch (option) {
                 case 'H':
-#if HAVE_BLKID_PROBE_SET_HINT
                         errno = 0;
                         r = sym_blkid_probe_set_hint(pr, optarg, 0);
                         if (r < 0)
                                 return log_device_error_errno(dev, errno_or_else(ENOMEM), "Failed to use '%s' probing hint: %m", optarg);
                         break;
-#else
-                        /* Use the hint <name>=<offset> as probing offset for old versions */
-                        optarg = strchr(optarg, '=');
-                        if (!optarg)
-                                /* no value means 0, do nothing for old versions */
-                                break;
-                        ++optarg;
-                        _fallthrough_;
-#endif
                 case 'o':
                         r = safe_atoi64(optarg, &offset);
                         if (r < 0)
@@ -489,7 +479,7 @@ static int builtin_blkid(UdevEvent *event, int argc, char *argv[]) {
         sym_blkid_probe_set_superblocks_flags(pr,
                 BLKID_SUBLKS_LABEL | BLKID_SUBLKS_UUID |
                 BLKID_SUBLKS_TYPE | BLKID_SUBLKS_SECTYPE |
-#ifdef BLKID_SUBLKS_FSINFO
+#ifdef BLKID_SUBLKS_FSINFO /* since util-linux 2.39 */
                 BLKID_SUBLKS_FSINFO |
 #endif
                 BLKID_SUBLKS_USAGE | BLKID_SUBLKS_VERSION);