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mdbx: minor fix prev commit.

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More for https://github.com/erthink/libmdbx/issues/97

Change-Id: I09ffe3430aa07bf5b01d9ad991affa004bb998a6
This commit is contained in:
Leonid Yuriev 2020-04-11 20:51:24 +03:00
parent f89c3eda17
commit abf38e97cc
1 changed files with 8 additions and 5 deletions
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13
src/elements/lck-posix.c
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@ -21,28 +21,31 @@
/* global constructor/destructor */ /* global constructor/destructor */
#if defined(__linux__) || defined(__gnu_linux__) #if defined(__linux__) || defined(__gnu_linux__)
#include <sys/utsname.h> #include <sys/utsname.h>
#ifndef MDBX_ALLOY #ifndef MDBX_ALLOY
uint32_t mdbx_linux_kernel_version; uint32_t mdbx_linux_kernel_version;
bool mdbx_RunningOnWSL; bool mdbx_RunningOnWSL;
#endif /* MDBX_ALLOY */ #endif /* MDBX_ALLOY */
#endif /* Linux */
static __cold unsigned probe_for_WSL(const char *tag) { static __cold bool probe_for_WSL(const char *tag) {
/* "Official" way of detecting WSL but not WSL2 /* "Official" way of detecting WSL but not WSL2
* https://github.com/Microsoft/WSL/issues/423#issuecomment-221627364 */ * https://github.com/Microsoft/WSL/issues/423#issuecomment-221627364 */
return strstr(tag, "Microsoft") || strstr(tag, "WSL"); return strstr(tag, "Microsoft") || strstr(tag, "WSL");
} }
#endif /* Linux */
static __cold __attribute__((__constructor__)) void static __cold __attribute__((__constructor__)) void
mdbx_global_constructor(void) { mdbx_global_constructor(void) {
#if defined(__linux__) || defined(__gnu_linux__) #if defined(__linux__) || defined(__gnu_linux__)
struct utsname buffer; struct utsname buffer;
if (uname(&buffer) == 0) { if (uname(&buffer) == 0) {
int i = 0;
mdbx_RunningOnWSL = probe_for_WSL(buffer.version) || mdbx_RunningOnWSL = probe_for_WSL(buffer.version) ||
probe_for_WSL(buffer.sysname) || probe_for_WSL(buffer.sysname) ||
probe_for_WSL(buffer.release); probe_for_WSL(buffer.release);
int i = 0;
char *p = buffer.release; char *p = buffer.release;
while (*p && i < 4) { while (*p && i < 4) {
if (*p >= '0' && *p <= '9') { if (*p >= '0' && *p <= '9') {
@ -304,12 +307,12 @@ MDBX_INTERNAL_FUNC int __cold mdbx_lck_seize(MDBX_env *env) {
int rc = MDBX_SUCCESS; int rc = MDBX_SUCCESS;
#if defined(__linux__) || defined(__gnu_linux__) #if defined(__linux__) || defined(__gnu_linux__)
if (unlikely(mdbx_RunningOnWSL)) { if (unlikely(mdbx_RunningOnWSL)) {
rc = ENOLCK; rc = ENOLCK /* No record locks available */;
mdbx_error("%s, err %u", mdbx_error("%s, err %u",
"WSL (Windows Subsystem for Linux) is mad and trouble-full, " "WSL (Windows Subsystem for Linux) is mad and trouble-full, "
"injecting failure to avoid data loss", "injecting failure to avoid data loss",
rc); rc);
return rc /* No record locks available */; return rc;
} }
#endif /* Linux */ #endif /* Linux */