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pxar: fixup 'vanished-file' logic a bit

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Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This commit is contained in:
Wolfgang Bumiller 2020-06-30 14:41:42 +02:00
parent 5afa0755ea
commit 7d0754a6d2
1 changed files with 13 additions and 5 deletions
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18
src/pxar/create.rs
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@ -248,11 +248,15 @@ impl<'a, 'b> Archiver<'a, 'b> {
}
/// openat() wrapper which allows but logs `EACCES` and turns `ENOENT` into `None`.
///
/// The `existed` flag is set when iterating through a directory to note that we know the file
/// is supposed to exist and we should warn if it doesnt'.
fn open_file(
&mut self,
parent: RawFd,
file_name: &CStr,
oflags: OFlag,
existed: bool,
) -> Result<Option<Fd>, Error> {
match Fd::openat(
&unsafe { RawFdNum::from_raw_fd(parent) },
@ -261,7 +265,12 @@ impl<'a, 'b> Archiver<'a, 'b> {
Mode::empty(),
) {
Ok(fd) => Ok(Some(fd)),
Err(nix::Error::Sys(Errno::ENOENT)) => Ok(None),
Err(nix::Error::Sys(Errno::ENOENT)) => {
if existed {
self.report_vanished_file()?;
}
Ok(None)
}
Err(nix::Error::Sys(Errno::EACCES)) => {
writeln!(self.errors, "failed to open file: {:?}: access denied", file_name)?;
Ok(None)
@ -275,6 +284,7 @@ impl<'a, 'b> Archiver<'a, 'b> {
parent,
c_str!(".pxarexclude"),
OFlag::O_RDONLY | OFlag::O_CLOEXEC | OFlag::O_NOCTTY,
false,
)?;
let old_pattern_count = self.patterns.len();
@ -452,14 +462,12 @@ impl<'a, 'b> Archiver<'a, 'b> {
parent,
c_file_name,
open_mode | OFlag::O_RDONLY | OFlag::O_NOFOLLOW | OFlag::O_CLOEXEC | OFlag::O_NOCTTY,
true,
)?;
let fd = match fd {
Some(fd) => fd,
None => {
self.report_vanished_file()?;
return Ok(());
}
None => return Ok(()),
};
let metadata = get_metadata(fd.as_raw_fd(), &stat, self.flags(), self.fs_magic)?;