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musl: base: Don't use memfd when unavailable

master
klzgrad 2026-09-12 12:00:00 +08:00
parent 3f73db18f4
commit d5289b085a
1 changed files with 7 additions and 2 deletions
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9
src/base/memory/platform_shared_memory_region_posix.cc
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@ -63,7 +63,12 @@ std::optional<FDAccessModeError> CheckFDAccessMode(int fd, int expected_mode) {
return std::nullopt;
}
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#if defined(__MUSL__) && !defined(MFD_CLOEXEC)
#define MUSL_NO_MFD 1
#else
#define MUSL_NO_MFD 0
#endif
#if BUILDFLAG(IS_LINUX) && !MUSL_NO_MFD || BUILDFLAG(IS_CHROMEOS)
// Added in Linux 6.3; not in all sysroot headers yet.
#ifndef MFD_NOEXEC_SEAL
@ -279,7 +284,7 @@ PlatformSharedMemoryRegion PlatformSharedMemoryRegion::Create(Mode mode,
CHECK_NE(mode, Mode::kReadOnly) << "Creating a region in read-only mode will "
"lead to this region being non-modifiable";
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#if BUILDFLAG(IS_LINUX) && !MUSL_NO_MFD || BUILDFLAG(IS_CHROMEOS)
if (!executable) {
ScopedFDPair anonymous_region = CreateAnonymousRegion(mode, size);
if (anonymous_region.fd.is_valid()) {