From 5d941f702aeb6d7b61bcb1ab3f2fbeddddc1f82b Mon Sep 17 00:00:00 2001 From: ptitSeb Date: Sun, 10 Nov 2024 11:09:33 +0100 Subject: Preserve errno on mmap / munmap speicifc memory traqking operations --- src/wrapped/wrappedlibc.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'src') diff --git a/src/wrapped/wrappedlibc.c b/src/wrapped/wrappedlibc.c index ba56c7c1..eb1911bd 100644 --- a/src/wrapped/wrappedlibc.c +++ b/src/wrapped/wrappedlibc.c @@ -3039,6 +3039,7 @@ EXPORT void* my_mmap64(x64emu_t* emu, void *addr, size_t length, int prot, int f errno = EEXIST; return MAP_FAILED; } + int e = errno; if((ret==MAP_FAILED && (emu || box64_is32bits)) && (box64_log>=LOG_DEBUG || box64_dynarec_log>=LOG_DEBUG)) {printf_log(LOG_NONE, "%s (%d)\n", strerror(errno), errno);} if(((ret!=MAP_FAILED) && (emu || box64_is32bits)) && (box64_log>=LOG_DEBUG || box64_dynarec_log>=LOG_DEBUG)) {printf_log(LOG_NONE, "%p\n", ret);} #ifdef DYNAREC @@ -3084,8 +3085,9 @@ EXPORT void* my_mmap64(x64emu_t* emu, void *addr, size_t length, int prot, int f else setProtection((uintptr_t)ret, length, prot); if(old_addr && ret!=old_addr) - errno = EEXIST; + e = EEXIST; } + errno = e; // preserve errno return ret; } EXPORT void* my_mmap(x64emu_t* emu, void *addr, size_t length, int prot, int flags, int fd, ssize_t offset) __attribute__((alias("my_mmap64"))); @@ -3145,6 +3147,7 @@ EXPORT int my_munmap(x64emu_t* emu, void* addr, size_t length) (void)emu; if((emu || box64_is32bits) && (box64_log>=LOG_DEBUG || box64_dynarec_log>=LOG_DEBUG)) {printf_log(LOG_NONE, "munmap(%p, 0x%lx)\n", addr, length);} int ret = internal_munmap(addr, length); + int e = errno; #ifdef DYNAREC if(!ret && box64_dynarec && length) { cleanDBFromAddressRange((uintptr_t)addr, length, 1); @@ -3153,6 +3156,7 @@ EXPORT int my_munmap(x64emu_t* emu, void* addr, size_t length) if(!ret) { freeProtection((uintptr_t)addr, length); } + errno = e; // preseve errno return ret; } -- cgit 1.4.1