Bug 845005
| Summary: | ncat: fails to transfer files from stdin | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Enrico Scholz <rh-bugzilla> |
| Component: | nmap | Assignee: | Michal Hlavinka <mhlavink> |
| Status: | CLOSED NEXTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | high | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 17 | CC: | athmanem, dsmith, fche, mhlavink, psabata |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | nmap-6.01-5.fc18 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-08-01 18:45:58 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Thanks for the report, I can reproduce this Note: option --nsock-engine=select can be used as a workaround This affects the systemtap testsuite also (causing a hang midstream). In systemtap's case, stdin is sometimes a pipe as opposed to a file; same symptoms. (In reply to comment #2) > Note: option --nsock-engine=select can be used as a workaround In my test, changing /bin/nc to - exec ncat "$@" + exec ncat --nsock-engine=select "$@" does not appear to fix it; maybe an EOF-detection problem too? (In reply to comment #5) > (In reply to comment #2) > > Note: option --nsock-engine=select can be used as a workaround > > In my test, changing /bin/nc to > > - exec ncat "$@" > + exec ncat --nsock-engine=select "$@" > > does not appear to fix it; maybe an EOF-detection problem too? That is bug #845075. I have patch for that, but I'm still waiting for upstream comments. This message is a reminder that Fedora 17 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 17. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as WONTFIX if it remains open with a Fedora 'version' of '17'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version prior to Fedora 17's end of life. Bug Reporter: Thank you for reporting this issue and we are sorry that we may not be able to fix it before Fedora 17 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior to Fedora 17's end of life. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. Fedora 17 changed to end-of-life (EOL) status on 2013-07-30. Fedora 17 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed. fixed in Fedora 18+ |
Description of problem: Because ncat is going to replace nc: A common use case which transfers files read from stdin does not work anymore: $ nc -l 1234 & # just a listening server; works with remote ones too $ touch /tmp/foo $ ncat `hostname` 1234 < /tmp/foo Unable to register IOD #2: Operation not permitted strace shows connect(4, {sa_family=AF_INET, sin_port=htons(1234), ...) = -1 EINPROGRESS (Operation now in progress) epoll_ctl(3, EPOLL_CTL_ADD, 4, {...}) = 0 epoll_wait(3, {?} 0x8b22d0, 128, 10000) = 1 getsockopt(4, SOL_SOCKET, SO_ERROR, [0], [4]) = 0 epoll_ctl(3, EPOLL_CTL_MOD, 4, {...}) = 0 epoll_ctl(3, EPOLL_CTL_MOD, 4, {...}) = 0 epoll_ctl(3, EPOLL_CTL_ADD, 0, {...}) = -1 EPERM (Operation not permitted) write(2, "Unable to register IOD #2: Opera"..., 50Unable to register IOD #2: Operation not permitted) = 50 Version-Release number of selected component (if applicable): nmap-6.00-1.fc17.x86_64