Commit 2fa96eb3 authored by Ramon Nou's avatar Ramon Nou
Browse files

Resolve "dup3 returns ENOTSUP"

parent 8d65f46b

CHANGELOG.md

+1 −1
Original line number Diff line number Diff line
@@ -22,7 +22,7 @@ to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). 
  - Export extra user library functions ([!227](https://storage.bsc.es/gitlab/hpc/gekkofs/-/merge_requests/227))

  

### Fixed



  - Dup3 is supported if O_CLOEXEC is not used (i.e. hexdump) ([!228](https://storage.bsc.es/gitlab/hpc/gekkofs/-/merge_requests/228))





## [0.9.4] - 2025-03

src/client/hooks.cpp

+5 −4
Original line number Diff line number Diff line
@@ -583,10 +583,11 @@ hook_dup3(unsigned int oldfd, unsigned int newfd, int flags) { 
        oldfd, newfd, flags);



    if(CTX->file_map()->exist(oldfd)) {

        // TODO implement O_CLOEXEC flag first which is used with fcntl(2)

        // It is in glibc since kernel 2.9. So maybe not that important :)

        if(flags & O_CLOEXEC) {

            LOG(WARNING, "{}() Not supported", __func__);

            return -ENOTSUP;

        } else

            return with_errno(gkfs::syscall::gkfs_dup2(oldfd, newfd));

    }

    return gsl::narrow_cast<int>(

            syscall_no_intercept_wrapper(SYS_dup3, oldfd, newfd, flags));