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Load app from sdcard on K210, but panicked on qemu.

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This commit is contained in:
Yifan Wu 2020-12-20 00:52:14 +08:00
parent 760de97155
commit a3802a4b91
18 changed files with 177 additions and 142 deletions
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6
os/src/syscall/fs.rs
View file

@ -10,6 +10,9 @@ pub fn sys_write(fd: usize, buf: *const u8, len: usize) -> isize {
return -1;
}
if let Some(file) = &inner.fd_table[fd] {
if !file.writable() {
return -1;
}
let file = file.clone();
// release Task lock manually to avoid deadlock
drop(inner);
@ -30,6 +33,9 @@ pub fn sys_read(fd: usize, buf: *const u8, len: usize) -> isize {
}
if let Some(file) = &inner.fd_table[fd] {
let file = file.clone();
if !file.readable() {
return -1;
}
// release Task lock manually to avoid deadlock
drop(inner);
file.read(