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osutil: add Libc.futimens() wrapper for futimens() call

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Python has no wrapper for a futime*() call so we need to implement
it in the `util.linux` package.
This commit is contained in:
Michael Vogt 2023-12-12 15:11:40 +01:00 • committed by Simon de Vlieger
parent ca9f4038c8
commit f52cabc3c1
2 changed files with 50 additions and 0 deletions
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22
test/mod/test_util_linux.py
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@ -2,6 +2,7 @@
# Tests for the `osbuild.util.linux` module.
#
import ctypes
import os
import subprocess
import tempfile
@ -240,3 +241,24 @@ def test_proc_boot_id():
bootid3 = linux.proc_boot_id("foobar")
assert bootid.int != bootid3.int
def test_libc_futimens_errcheck():
libc = linux.Libc.default()
with pytest.raises(OSError):
libc.futimens(-1, None)
def test_libc_futimes_works(tmpdir):
libc = linux.Libc.default()
stamp_file = os.path.join(tmpdir, "foo")
with open(stamp_file, "w") as fp:
fp.write("meep")
mtime1 = os.stat(stamp_file).st_mtime
with open(stamp_file, "w") as fp:
libc.futimens(fp.fileno(), ctypes.byref(linux.c_timespec_times2(
atime=linux.c_timespec(tv_sec=3, tv_nsec=300*1000*1000),
mtime=linux.c_timespec(tv_sec=0, tv_nsec=libc.UTIME_OMIT),
)))
assert os.stat(stamp_file).st_atime == 3.3
assert os.stat(stamp_file).st_mtime == mtime1