diff options
| author | dzwdz | 2023-06-17 22:19:36 +0200 |
|---|---|---|
| committer | dzwdz | 2023-06-17 23:39:27 +0200 |
| commit | b528a54a708c4cd2149c8e6884af2063c2b272cd (patch) | |
| tree | ded8aff45f2d5e7f08eb68f710edc7b9b164d5a2 /src/kernel/syscalls.c | |
| parent | 8929eb838bec8d3f5eb0d5a1c6b91a4f27d0baff (diff) | |
kernel: fix procfs overflow bug, add safeguard to prevent similar ones
Diffstat (limited to 'src/kernel/syscalls.c')
| -rw-r--r-- | src/kernel/syscalls.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/kernel/syscalls.c b/src/kernel/syscalls.c index 66f8757..ebdf64e 100644 --- a/src/kernel/syscalls.c +++ b/src/kernel/syscalls.c @@ -295,7 +295,7 @@ long _sys_fs_respond(hid_t hid, const void __user *buf, long ret, int flags) { if (!h || h->type != HANDLE_FS_REQ) SYSCALL_RETURN(-EBADF); VfsReq *req = h->req; if (req) { - if (req->output.len > 0 && ret > 0) { + if (ret > 0 && req->type == VFSOP_READ) { // if this vfsop outputs data and ret is positive, it's the length of the buffer // TODO document // TODO move to vfsreq_finish |