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[kernel] fix err_insufficient bug in endpoint

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The endpoint syscalls endpoint_recv and endpoint_sendrecv gained new
local stack variables for calling into possibly blocking endpoint
functions, but the len variable was being initialized to 0 instead of
the incoming buffer size.
This commit is contained in:
Justin C. Miller
2021-01-18 18:22:32 -08:00
parent 02766d82eb
commit 9f342dff49
1 changed files with 2 additions and 2 deletions
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4
src/kernel/syscalls/endpoint.cpp
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@@ -36,7 +36,7 @@ endpoint_receive(j6_handle_t handle, j6_tag_t *tag, size_t *len, void *data)
if (!e) return j6_err_invalid_arg; if (!e) return j6_err_invalid_arg;
j6_tag_t out_tag = j6_tag_invalid; j6_tag_t out_tag = j6_tag_invalid;
size_t out_len = 0; size_t out_len = *len;
j6_status_t s = e->receive(&out_tag, &out_len, data); j6_status_t s = e->receive(&out_tag, &out_len, data);
*tag = out_tag; *tag = out_tag;
*len = out_len; *len = out_len;
@@ -57,7 +57,7 @@ endpoint_sendrecv(j6_handle_t handle, j6_tag_t *tag, size_t *len, void *data)
return status; return status;
j6_tag_t out_tag = j6_tag_invalid; j6_tag_t out_tag = j6_tag_invalid;
size_t out_len = 0; size_t out_len = *len;
j6_status_t s = e->receive(&out_tag, &out_len, data); j6_status_t s = e->receive(&out_tag, &out_len, data);
*tag = out_tag; *tag = out_tag;
*len = out_len; *len = out_len;