Rollup merge of #43304 - ids1024:path2, r=aturon
redox: handle multiple paths in PATH
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commit
b43f58bc25
@ -73,10 +73,10 @@ pub fn split_paths(unparsed: &OsStr) -> SplitPaths {
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fn bytes_to_path(b: &[u8]) -> PathBuf {
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PathBuf::from(<OsStr as OsStrExt>::from_bytes(b))
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}
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fn is_colon(b: &u8) -> bool { *b == b':' }
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fn is_semicolon(b: &u8) -> bool { *b == b';' }
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let unparsed = unparsed.as_bytes();
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SplitPaths {
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iter: unparsed.split(is_colon as fn(&u8) -> bool)
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iter: unparsed.split(is_semicolon as fn(&u8) -> bool)
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.map(bytes_to_path as fn(&[u8]) -> PathBuf)
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}
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}
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@ -94,7 +94,7 @@ pub fn join_paths<I, T>(paths: I) -> Result<OsString, JoinPathsError>
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where I: Iterator<Item=T>, T: AsRef<OsStr>
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{
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let mut joined = Vec::new();
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let sep = b':';
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let sep = b';';
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for (i, path) in paths.enumerate() {
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let path = path.as_ref().as_bytes();
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@ -9,11 +9,12 @@
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// except according to those terms.
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use collections::hash_map::HashMap;
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use env;
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use env::{self, split_paths};
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use ffi::OsStr;
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use os::unix::ffi::OsStrExt;
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use fmt;
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use io::{self, Error, ErrorKind};
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use path::Path;
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use path::{Path, PathBuf};
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use sys::fd::FileDesc;
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use sys::fs::{File, OpenOptions};
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use sys::pipe::{self, AnonPipe};
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@ -313,23 +314,29 @@ impl Command {
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}
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let program = if self.program.contains(':') || self.program.contains('/') {
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self.program.to_owned()
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} else {
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let mut path_env = ::env::var("PATH").unwrap_or(".".to_string());
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if ! path_env.ends_with('/') {
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path_env.push('/');
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Some(PathBuf::from(&self.program))
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} else if let Ok(path_env) = ::env::var("PATH") {
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let mut program = None;
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for mut path in split_paths(&path_env) {
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path.push(&self.program);
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if path.exists() {
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program = Some(path);
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break;
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}
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}
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path_env.push_str(&self.program);
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path_env
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program
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} else {
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None
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};
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if let Err(err) = syscall::execve(&program, &args) {
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io::Error::from_raw_os_error(err.errno as i32)
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if let Some(program) = program {
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if let Err(err) = syscall::execve(program.as_os_str().as_bytes(), &args) {
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io::Error::from_raw_os_error(err.errno as i32)
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} else {
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panic!("return from exec without err");
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}
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} else {
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panic!("return from exec without err");
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io::Error::new(io::ErrorKind::NotFound, "")
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}
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}
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@ -77,9 +77,9 @@ pub fn dup2(fd: usize, newfd: usize, buf: &[u8]) -> Result<usize> {
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}
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/// Replace the current process with a new executable
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pub fn execve(path: &str, args: &[[usize; 2]]) -> Result<usize> {
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unsafe { syscall4(SYS_EXECVE, path.as_ptr() as usize, path.len(),
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args.as_ptr() as usize, args.len()) }
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pub fn execve<T: AsRef<[u8]>>(path: T, args: &[[usize; 2]]) -> Result<usize> {
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unsafe { syscall4(SYS_EXECVE, path.as_ref().as_ptr() as usize,
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path.as_ref().len(), args.as_ptr() as usize, args.len()) }
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}
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/// Exit the current process
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