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kernel/vfs: Sanity checks before performing reads/writes

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Ry 2023-09-14 14:58:10 -07:00
parent 9ae1e4710d
commit d41fcd8817
1 changed files with 10 additions and 0 deletions
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10
kernel/vfs/vfs.asm
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@ -151,6 +151,12 @@ stream_get_size:
; outputs: ; outputs:
; none ; none
read: read:
cmp r0, 0
ifz ret
cmp r1, 0
ifz ret
cmp r2, 0
ifz ret
push r3 push r3
push r1 push r1
add r1, 7 add r1, 7
@ -212,6 +218,10 @@ stream_read_char:
; outputs: ; outputs:
; none ; none
write: write:
cmp r0, 0
ifz ret
cmp r1, 0
ifz ret
push r3 push r3
push r1 push r1
add r1, 7 add r1, 7