From: Marc Espie <marc.espie.openbsd@gmail.com>
Subject: Re: new (wip-ish): sysutils/plocate
To: ports <ports@openbsd.org>
Date: Sat, 3 Aug 2024 10:21:56 +0200

On Fri, Aug 02, 2024 at 06:14:47PM +0100, Stuart Henderson wrote:
> Biggest yucky bit with the port if used as a "standard" locate tool is
> that the code to check filesystem types is Linux-only and I haven't
> added an OpenBSD implementation, so you can't easily disable (e.g.)
> "all NFS partitions", you've got to specify paths to skip.

I've looked at the FreeBSD port, puked in my mouth a bit
(I assume they already got that horrible compat code from somewhere else)
and wrote a quickie using statfs

Should work.

New port attached. I also took the liberty of silencing
some crazy warning from modern clang.
(no idea if it's possible to do that directly on the
meson command line)



Index: updatedb.cpp
--- updatedb.cpp.orig
+++ updatedb.cpp
@@ -43,7 +43,12 @@ any later version.
 #include <iosfwd>
 #include <math.h>
 #include <memory>
+#ifdef __OpenBSD__
+#include <sys/types.h>
+#include <sys/mount.h>
+#else
 #include <mntent.h>
+#endif
 #include <random>
 #include <stdint.h>
 #include <stdio.h>
@@ -58,6 +63,8 @@ any later version.
 #include <utility>
 #include <vector>
 
+char *program_invocation_name;
+
 using namespace std;
 using namespace std::chrono;
 
@@ -164,6 +171,20 @@ bool filesystem_is_excluded(const string &path)
 	if (conf_debug_pruning) {
 		fprintf(stderr, "Checking whether filesystem `%s' is excluded:\n", path.c_str());
 	}
+#ifdef __OpenBSD__
+	struct statfs buf;
+	if (statfs(path.c_str(), &buf) == -1)
+		perror("statfs failed");
+	string type(buf.f_fstypename);
+	for (char &p : type) {
+		p = toupper(p);
+	}
+	bool exclude = (find(conf_prunefs.begin(), conf_prunefs.end(), type) != conf_prunefs.end());
+	if (exclude && conf_debug_pruning) {
+		fprintf(stderr, " => excluded due to filesystem type\n");
+	}
+	return exclude;
+#else
 	FILE *f = setmntent("/proc/mounts", "r");
 	if (f == nullptr) {
 		return false;
@@ -192,6 +213,7 @@ bool filesystem_is_excluded(const string &path)
 		fprintf(stderr, "...not found in mount list\n");
 	}
 	endmntent(f);
+#endif
 	return false;
 }
 
@@ -780,6 +802,7 @@ int main(int argc, char **argv)
 		rlim.rlim_cur = std::min<rlim_t>(wanted, rlim.rlim_max);
 		setrlimit(RLIMIT_NOFILE, &rlim);  // Ignore errors.
 	}
+	program_invocation_name = argv[0];
 
 	conf_prepare(argc, argv);
 	if (conf_prune_bind_mounts) {