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df: error handling cleanup

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leon 2022-06-09 12:35:37 +02:00 committed by Sylvestre Ledru
parent 72b0ba0b05
commit 388e14f208
1 changed files with 5 additions and 18 deletions
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23
src/uu/df/src/df.rs
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@ -14,6 +14,7 @@ mod table;
use blocks::HumanReadable;
use table::HeaderMode;
use uucore::display::Quotable;
use uucore::error::FromIo;
use uucore::error::{UError, UIoError, UResult, USimpleError};
use uucore::fsext::{read_fs_list, MountInfo};
use uucore::parse_size::ParseSizeError;
@ -443,15 +444,8 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
// Get the list of filesystems to display in the output table.
let filesystems: Vec<Filesystem> = match matches.values_of(OPT_PATHS) {
None => {
let filesystems = match get_all_filesystems(&opt) {
Ok(filesystems) => filesystems,
Err(error) => {
return Err(UIoError::new(
error.kind(),
"cannot read table of mounted file systems",
));
}
};
let filesystems = get_all_filesystems(&opt)
.map_err_context(|| "cannot read table of mounted file systems".into())?;
if filesystems.is_empty() {
return Err(USimpleError::new(1, "no file systems processed"));
@ -461,15 +455,8 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
}
Some(paths) => {
let paths: Vec<&str> = paths.collect();
let filesystems = match get_named_filesystems(&paths, &opt) {
Ok(filesystems) => filesystems,
Err(error) => {
return Err(UIoError::new(
error.kind(),
"cannot read table of mounted file systems",
));
}
};
let filesystems = get_named_filesystems(&paths, &opt)
.map_err_context(|| "cannot read table of mounted file systems".into())?;
// This can happen if paths are given as command-line arguments
// but none of the paths exist.