wroclaw-git-backups/nix
1
0
Fork 0
mirror of https://github.com/NixOS/nix synced 2025-06-27 12:41:15 +02:00
Code Activity

libutil: writeFile variant for file descriptors

Browse source 
`writeFile` lose its `sync` boolean flag to make things simpler.

A new `writeFileAndSync` function is created and all call sites are
converted to it.

Change-Id: Ib871a5283a9c047db1e4fe48a241506e4aab9192
Signed-off-by: Raito Bezarius <raito@lix.systems>
This commit is contained in:
Raito Bezarius 2025-03-26 01:06:03 +01:00 • committed by Jörg Thalheim
parent 002d202653
commit 034f59bbb9
3 changed files with 39 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

35
src/libutil/file-system.cc
View file

@ -304,7 +304,7 @@ void readFile(const Path & path, Sink & sink, bool memory_map)
}
void writeFile(const Path & path, std::string_view s, mode_t mode, bool sync)
void writeFile(const Path & path, std::string_view s, mode_t mode)
{
AutoCloseFD fd = toDescriptor(open(path.c_str(), O_WRONLY | O_TRUNC | O_CREAT
// TODO
@ -314,20 +314,39 @@ void writeFile(const Path & path, std::string_view s, mode_t mode, bool sync)
, mode));
if (!fd)
throw SysError("opening file '%1%'", path);
writeFile(fd, s, mode);
/* Close explicitly to propagate the exceptions. */
fd.close();
}
void writeFile(AutoCloseFD & fd, std::string_view s, mode_t mode)
{
assert(fd);
try {
writeFull(fd.get(), s);
} catch (Error & e) {
e.addTrace({}, "writing file '%1%'", path);
e.addTrace({}, "writing file '%1%'", fd.guessOrInventPath());
throw;
}
if (sync)
fd.fsync();
// Explicitly close to make sure exceptions are propagated.
fd.close();
if (sync)
syncParent(path);
}
void writeFileAndSync(const Path & path, std::string_view s, mode_t mode)
{
{
AutoCloseFD fd{open(path.c_str(), O_WRONLY | O_TRUNC | O_CREAT | O_CLOEXEC, mode)};
if (!fd)
throw SysError("opening file '%1%'", path);
writeFile(fd, s, mode);
fd.fsync();
/* Close explicitly to ensure that exceptions are propagated. */
fd.close();
}
syncParent(path);
}
void writeFile(const Path & path, Source & source, mode_t mode, bool sync)
{