nixos/nix
1
1
Fork 0
mirror of https://github.com/NixOS/nix.git synced 2025-12-22 17:01:08 +01:00
Code Activity

Merge pull request #14677 from NixOS/restartable-source-no-path

Browse source 
libutil: Get rid of restartableSourceFromFactory, add createAnonymousTempFile
This commit is contained in:
John Ericson 2025-12-01 03:46:48 +00:00 • committed by GitHub
commit 890a4e980a
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
6 changed files with 86 additions and 73 deletions
Download patch file Download diff file Expand all files Collapse all files

20
src/libutil/file-system.cc
View file

@ -713,11 +713,31 @@ std::filesystem::path createTempDir(const std::filesystem::path & tmpRoot, const
}
}
AutoCloseFD createAnonymousTempFile()
{
AutoCloseFD fd;
#ifdef O_TMPFILE
fd = ::open(defaultTempDir().c_str(), O_TMPFILE | O_CLOEXEC | O_RDWR, S_IWUSR | S_IRUSR);
if (!fd)
throw SysError("creating anonymous temporary file");
#else
auto [fd2, path] = createTempFile("nix-anonymous");
if (!fd2)
throw SysError("creating temporary file '%s'", path);
fd = std::move(fd2);
# ifndef _WIN32
unlink(requireCString(path)); /* We only care about the file descriptor. */
# endif
#endif
return fd;
}
std::pair<AutoCloseFD, Path> createTempFile(const Path & prefix)
{
Path tmpl(defaultTempDir() + "/" + prefix + ".XXXXXX");
// Strictly speaking, this is UB, but who cares...
// FIXME: use O_TMPFILE.
// FIXME: Windows should use FILE_ATTRIBUTE_TEMPORARY | FILE_FLAG_DELETE_ON_CLOSE
AutoCloseFD fd = toDescriptor(mkstemp((char *) tmpl.c_str()));
if (!fd)
throw SysError("creating temporary file '%s'", tmpl);