Error Failed To Stat Interrupted System Call
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Interrupted System Call In Unix
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Interrupted System Calls
0 down vote favorite I am trying to implement a TCP server and client in C, running on Solaris. I am new to sockets and am using Beej's Guide as an example. For starters, what I would like is for the client to send a message to the server in the form of word1 word2. Upon receipt, I want the server to extract word2 from the message and send that connect interrupted system call back to the client. The initial client --> server message sending works fine. But the server --> client response is not working. There are several failure symptoms: The server does not appear to even try to send() anything to the client. After receiving the client's message, the server prints: accept: Interrupted system call, then returns to the top of the while(1) loop and remains there until I Ctrl-C out of it. The client's call to recv() returns 0 bytes. I found an old thread here, where the last post says this: accept is being interrupted by the child process sending a signal back to the parent when it terminates (SIGCHLD, if I remember write). You can either ignore SIGCHLD, or you can code accept() to handle the interrupt better (errno is set to EINTR) However, I'm not understanding this. Why is the child process terminating before even attempting the send() portion? What does "handle the interrupt better" mean? After searching some more, I found this question on Stack Overflow: How to handle EINTR (interrupted System Call). I tried adding the code in the accepted answer, replacing write() with send(), but I still see the same behavior. Server code: #include here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Unix & Linux Questions Tags Users Badges Unanswered Ask Question _ Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD read eintr and other Un*x-like operating systems. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top http://stackoverflow.com/questions/20067657/tcp-sockets-server-fails-to-respond-to-client-accept-interrupted-system-call Occasional error from bash on AIX: Interrupted system call up vote 0 down vote favorite I am experiencing problems with process substitution in bash on AIX It happens very rarely, apparently only when the server is loaded. An example error message is: line 9: /tmp//sh-np-7841523: Interrupted system call Before I investigate more into my script, I wanted to know if you had already had issues with process substitution. Or get your inputs regarding some possible recommendations http://unix.stackexchange.com/questions/102784/occasional-error-from-bash-on-aix-interrupted-system-call to observe when implementing process substitution. Note: this simple script can generate the aforementioned error: #!/bin/bash read var < <(echo) However I stress this point: the error is very rare. It cannot be reproduced systematically. The server on which the script has been tested is a production server. bash aix system-calls process-substitution share|improve this question edited Apr 27 at 18:27 Anthon 47.4k1462125 asked Nov 27 '13 at 15:15 Brat PID 112 2 We can't answer unless you show us what kind of process substitution you run, if you get this error every time you do a process substitution or only with certain commands etc. –terdon♦ Nov 27 '13 at 15:25 add a comment| 1 Answer 1 active oldest votes up vote 2 down vote Check that you're using the latest version of bash. If you are, report a bug; be sure to indicate exactly where you obtained the bash binary if you installed an existing binary, or what compiler and compile-time configuration you used and where you obtained the source if you compiled bash by yourself. Also mention your exact version of AIX and your hardware architecture. Mention how to reproduce the bug, like you did here, of course. “Interrupted system call” is not really an error. It's an error status (EINTR) that tells the caller that the system call was not performed at all 5.2.x Turnkey systems Problem Clarification [root@ppbvwlapiqdp1 5.2.x_PatchForShellShockVulnerability]# sh ShellShock.sh apply | tee –a Shellshock.log IQ is at Correct Version 524. RedHat is at Proper Version 5.5. interrupted system warning: ./bash-3.2-33.el5_11.4.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 192a7d7d error: failed to stat /backups: Interrupted system call Cause NFS was not working the following commands show that the NFS is unreachable - interrupted system call df –h --> hangs - ls –la /backups --> hangs - ping for child process to change state SYNOPSIS #include Poll Interrupted System Call
Interrupted System Call (code=4)