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pty: set SHELL to the shell we selected

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refs: #2469
This commit is contained in:
Wez Furlong 2022-09-01 05:37:51 -07:00
parent 9082c79b34
commit c0a841eecb
2 changed files with 24 additions and 18 deletions
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2
mux/src/domain.rs
View File

@ -488,7 +488,7 @@ impl Domain for LocalDomain {
let command_description = format!(
"\"{}\" in domain \"{}\"",
if command_line.is_empty() {
cmd.get_shell()?
cmd.get_shell()
} else {
command_line
},

40
pty/src/cmdbuilder.rs
View File

@ -412,10 +412,9 @@ impl CommandBuilder {
.map(|dir| dir.as_os_str())
.filter(|dir| std::path::Path::new(dir).is_dir())
.unwrap_or(home.as_ref());
let shell = self.get_shell();
let mut cmd = if self.is_default_prog() {
let shell = self.get_shell()?;
let mut cmd = std::process::Command::new(&shell);
// Run the shell as a login shell by prefixing the shell's
@ -434,6 +433,7 @@ impl CommandBuilder {
cmd.current_dir(dir);
cmd.env_clear();
cmd.env("SHELL", shell);
cmd.envs(self.envs.values().map(
|EnvEntry {
is_from_base_env: _,
@ -448,7 +448,7 @@ impl CommandBuilder {
/// Determine which shell to run.
/// We take the contents of the $SHELL env var first, then
/// fall back to looking it up from the password database.
pub fn get_shell(&self) -> anyhow::Result<String> {
pub fn get_shell(&self) -> String {
use nix::unistd::{access, AccessFlags};
use std::ffi::CStr;
use std::path::Path;
@ -456,7 +456,7 @@ impl CommandBuilder {
if let Some(shell) = self.get_env("SHELL").and_then(OsStr::to_str) {
match access(shell, AccessFlags::X_OK) {
Ok(()) => return Ok(shell.into()),
Ok(()) => return shell.into(),
Err(err) => log::warn!(
"$SHELL -> {shell:?} which is \
not executable ({err:#}), falling back to password db lookup"
@ -467,21 +467,27 @@ impl CommandBuilder {
let ent = unsafe { libc::getpwuid(libc::getuid()) };
if !ent.is_null() {
let shell = unsafe { CStr::from_ptr((*ent).pw_shell) };
let shell = shell
.to_str()
.map(str::to_owned)
.context("failed to resolve shell from passwd database")?;
if let Err(err) = access(Path::new(&shell), AccessFlags::X_OK) {
log::warn!(
"passwd database shell={shell:?} which is \
not executable ({err:#}), fallback to /bin/sh"
);
} else {
return Ok(shell)
match shell.to_str().map(str::to_owned) {
Err(err) => {
log::warn!(
"passwd database shell could not be \
represented as utf-8: {err:#}, \
falling back to /bin/sh"
);
}
Ok(shell) => {
if let Err(err) = access(Path::new(&shell), AccessFlags::X_OK) {
log::warn!(
"passwd database shell={shell:?} which is \
not executable ({err:#}), falling back to /bin/sh"
);
} else {
return shell;
}
}
}
}
Ok("/bin/sh".into())
"/bin/sh".into()
}
fn get_home_dir(&self) -> anyhow::Result<String> {