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Abort when libuv at runtime mismatches libuv at compile time

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When we compile with libuv that has some capabilities via flags passed
to f.e. uv_udp_listen() or uv_udp_bind(), the call with such flags would
fail with invalid arguments when older libuv version is linked at the
runtime that doesn't understand the flag that was available at the
compile time.

Enforce minimal libuv version when flags have been available at the
compile time, but are not available at the runtime.  This check is less
strict than enforcing the runtime libuv version to be same or higher
than compile time libuv version.
This commit is contained in:
Ondřej Surý
2022-04-25 14:43:14 +02:00
parent ed4dd7bef7
commit eb8f2974b1
2 changed files with 37 additions and 0 deletions
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20
lib/isc/netmgr/netmgr.c
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@@ -207,6 +207,18 @@ isc__nm_threadpool_initialize(uint32_t workers) {
}
}
#if HAVE_DECL_UV_UDP_LINUX_RECVERR
#define MINIMAL_UV_VERSION UV_VERSION(1, 42, 0)
#elif HAVE_DECL_UV_UDP_MMSG_FREE
#define MINIMAL_UV_VERSION UV_VERSION(1, 40, 0)
#elif HAVE_DECL_UV_UDP_RECVMMSG
#define MINIMAL_UV_VERSION UV_VERSION(1, 37, 0)
#elif HAVE_DECL_UV_UDP_MMSG_CHUNK
#define MINIMAL_UV_VERSION UV_VERSION(1, 35, 0)
#else
#define MINIMAL_UV_VERSION UV_VERSION(1, 0, 0)
#endif
void
isc__netmgr_create(isc_mem_t *mctx, uint32_t workers, isc_nm_t **netmgrp) {
isc_nm_t *mgr = NULL;
@@ -214,6 +226,14 @@ isc__netmgr_create(isc_mem_t *mctx, uint32_t workers, isc_nm_t **netmgrp) {
REQUIRE(workers > 0);
if (uv_version() < MINIMAL_UV_VERSION) {
isc_error_fatal(__FILE__, __LINE__,
"libuv version too old: running with libuv %s "
"when compiled with libuv %s will lead to "
"libuv failures because of unknown flags",
uv_version_string(), UV_VERSION_STRING);
}
isc__nm_threadpool_initialize(workers);
mgr = isc_mem_get(mctx, sizeof(*mgr));