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elaborate error message for initfs chdir failure

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This commit is contained in:
Aaron Janse
2020-08-17 03:24:56 -07:00
parent dfcf5be778
commit dc6132dc06
1 changed files with 6 additions and 1 deletions
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7
src/lib.rs
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@@ -170,7 +170,12 @@ pub extern fn userspace_init() {
let path = b"initfs:/bin/init";
let env = unsafe { INIT_ENV };
assert_eq!(syscall::chdir(b"initfs:"), Ok(0));
if let Err(err) = syscall::chdir(b"initfs:") {
info!("Failed to enter initfs ({}).", err);
info!("Perhaps the kernel was compiled with an incorrect INITFS_FOLDER \
environment variable value?");
panic!("Unexpected error while trying to enter initfs:.");
}
assert_eq!(syscall::open(b"debug:", syscall::flag::O_RDONLY).map(FileHandle::into), Ok(0));
assert_eq!(syscall::open(b"debug:", syscall::flag::O_WRONLY).map(FileHandle::into), Ok(1));