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https://github.com/hexagonal-sun/moss-kernel.git
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aaac9ffd2c
Replace `CUR_TASK_PTR` with `ProcessCtx`. This allows differentiation between functions that access process context (take in `ProcessCtx` as a parameter) and those that don't. When creating a new class of scheduleable tasks (softirqs, kthreads), this ensure that those functions cannot call context-sensitive functions.
15 lines
363 B
Rust
15 lines
363 B
Rust
use core::convert::Infallible;
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use crate::sched::syscall_ctx::ProcessCtx;
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pub fn sys_umask(ctx: &ProcessCtx, new_umask: u32) -> core::result::Result<usize, Infallible> {
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let task = ctx.shared();
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let mut umask_guard = task.process.umask.lock_save_irq();
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let old_umask = *umask_guard;
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*umask_guard = new_umask & 0o777;
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Ok(old_umask as _)
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}
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