RGBCube/uutils-coreutils
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Use dir_entry metadata for dereferenced bad fds to match GNU, add comments, clippy lints

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This commit is contained in:
electricboogie 2022-01-16 10:20:50 -06:00
parent 37ca6edfdc
commit 15efba54c5
3 changed files with 44 additions and 33 deletions
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4
build.rs
View file

@ -83,7 +83,7 @@ pub fn main() {
mf.write_all(
format!(
"\tmap.insert(\"{k}\", ({krate}::uumain, {krate}::uu_app));\n",
k = krate[override_prefix.len()..].to_string(),
k = krate[override_prefix.len()..].to_owned(),
krate = krate
)
.as_bytes(),
@ -92,7 +92,7 @@ pub fn main() {
tf.write_all(
format!(
"#[path=\"{dir}/test_{k}.rs\"]\nmod test_{k};\n",
k = krate[override_prefix.len()..].to_string(),
k = krate[override_prefix.len()..].to_owned(),
dir = util_tests_dir,
)
.as_bytes(),

30
src/uu/ls/src/ls.rs
View file

@ -207,9 +207,10 @@ impl Display for LsError {
}
_ => match errno {
9i32 => {
// only should ever occur on a read_dir on a bad fd
write!(
f,
"cannot access '{}': Bad file descriptor",
"cannot open directory '{}': Bad file descriptor",
p.to_string_lossy(),
)
}
@ -1354,18 +1355,24 @@ impl PathData {
Err(err) => {
let _ = out.flush();
let errno = err.raw_os_error().unwrap_or(1i32);
// Wait to enter "directory" to print error for a bad fd
// Wait to enter "directory" to print error for any bad fd
if self.must_dereference && errno.eq(&9i32) {
if let Ok(md) = get_metadata(&self.p_buf, false) {
Some(md)
} else {
show!(LsError::IOErrorContext(err, self.p_buf.clone(),));
None
if let Some(parent) = self.p_buf.parent() {
if let Ok(read_dir) = fs::read_dir(parent) {
// this dir_entry metadata is different from the metadata call on the path
let res = read_dir
.filter_map(|x| x.ok())
.filter(|x| self.p_buf.eq(&x.path()))
.filter_map(|x| x.metadata().ok())
.next();
if let Some(md) = res {
return Some(md);
}
}
}
} else {
show!(LsError::IOErrorContext(err, self.p_buf.clone(),));
None
}
show!(LsError::IOErrorContext(err, self.p_buf.clone(),));
None
}
Ok(md) => Some(md),
},
@ -1565,7 +1572,8 @@ fn enter_directory(
let res = PathData::new(dir_entry.path(), Some(Ok(ft)), None, config, false);
// metadata returned from a DirEntry matches GNU metadata for
// non-dereferenced files, and is *different* from the
// metadata call on the path, see, for example, bad fds
// metadata call on the path, see, for example, bad fds,
// so we use here when we will need metadata later anyway
if !res.must_dereference
&& ((config.format == Format::Long)
|| (config.sort == Sort::Name)

43
tests/by-util/test_ls.rs
View file

@ -170,7 +170,7 @@ fn test_ls_io_errors() {
.stderr_contains("Permission denied")
.stdout_contains("some-dir4");
// test we don't double print on dangling link metadata errors
// don't double print on dangling link metadata errors
scene
.ucmd()
.arg("-iRL")
@ -188,26 +188,29 @@ fn test_ls_io_errors() {
let rv1 = dup2(fd1, fd2);
let rv2 = close(fd1);
scene
.ucmd()
.arg("-alR")
.arg(format!("/dev/fd/{}", fd2))
.fails()
.stderr_contains(format!(
"cannot access '/dev/fd/{}': Bad file descriptor",
fd2
))
.stdout_does_not_contain(format!("{}:\n", fd2));
scene
.ucmd()
.arg("-RiL")
.arg(format!("/dev/fd/{}", fd2))
.fails()
.stderr_contains(format!("cannot access '/dev/fd/{}': Bad file descriptor", fd2))
// test we only print bad fd error once
.stderr_does_not_contain(format!("ls: cannot access '/dev/fd/{fd}': Bad file descriptor\nls: cannot access '/dev/fd/{fd}': Bad file descriptor", fd = fd2));
// dup and close work on the mac, but doesn't work in some linux containers
// so check to see that return values are non-error before proceeding
if rv1.is_ok() && rv2.is_ok() {
scene
.ucmd()
.arg("-alR")
.arg(format!("/dev/fd/{}", fd = fd2))
.fails()
.stderr_contains(format!(
"cannot open directory '/dev/fd/{fd}': Bad file descriptor",
fd = fd2
))
.stdout_does_not_contain(format!("{fd}:\n", fd = fd2));
scene
.ucmd()
.arg("-RiL")
.arg(format!("/dev/fd/{fd}", fd = fd2))
.fails()
.stderr_contains(format!("cannot open directory '/dev/fd/{fd}': Bad file descriptor", fd = fd2))
// don't double print bad fd errors
.stderr_does_not_contain(format!("ls: cannot open directory '/dev/fd/{fd}': Bad file descriptor\nls: cannot open directory '/dev/fd/{fd}': Bad file descriptor", fd = fd2));
}
let _ = close(fd2);
}
}