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-rwxr-xr-xsrc/basic/generate-filesystem-switch-case.py53
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diff --git a/src/basic/generate-filesystem-switch-case.py b/src/basic/generate-filesystem-switch-case.py
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+#!/usr/bin/env python3
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+import sys
+
+
+def filter_fsname(name):
+ # File system magics are sometimes not unique, because file systems got new
+ # revisions or got renamed. Let's prefer newer over older here, and thus
+ # ignore the old names.
+
+ return name in {
+ "cpuset", # magic taken over by cgroupfs
+ "devtmpfs", # not a file system of its own, but just a "named superblock" of tmpfs
+ "ext2", # ext4 is the newest revision of ext2 + ext3
+ "ext3",
+ "fuseblk", # closely related to fuse; they share a single magic, but the latter is more common
+ "gfs", # magic taken over by gfs2
+ "msdos", # vfat is the newest revision of msdos
+ "ncp", # ncpfs (not ncp) was the last name of the netware `file_system_type`
+ # name before it was removed in 2018
+ "nfs", # nfs4 is the newest revision of nfs
+ "pvfs2", # orangefs is the new name of pvfs2
+ "smb3", # smb3 is an alias for cifs
+ }
+
+
+gperf_file = sys.argv[1]
+keywords_section = False
+
+for line in open(gperf_file):
+ if line[0] == "#":
+ continue
+
+ if keywords_section:
+ name, ids = line.split(",", 1)
+
+ name = name.strip()
+ if filter_fsname(name):
+ continue
+
+ ids = ids.strip()
+ assert ids[0] == "{"
+ assert ids[-1] == "}"
+ ids = ids[1:-1]
+
+ for id in ids.split(","):
+ print(f"case (statfs_f_type_t) {id.strip()}:")
+
+ print(f' return "{name}";')
+
+ if line.startswith("%%"):
+ keywords_section = True