Programming :: User Mode Permission Denied To Bind To Socket?
May 3, 2011
In user mode [non-root] linux machine, tried to bind a socket by using a"ioctl(iInterfaceSocket, SIOCSIFADDR, &stCommand)". I am getting error 13 -> Permission denied because of user mode. If change from usermode to kernel mode everything works fine.I need to bind the socket in user mode only, please suggest solution for the abovewhile explaining the above,
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Oct 17, 2010
I tried removing it and installing again but I still get the same code in the terminal:
[Code]....
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Sep 14, 2010
I want to let a regular user (not just root) restart apache on my Ubuntu machine.I was using /etc/init.d/apache2 so I figured this is what I have to set permissions for. I set the owner group for this file a group to which that user also belongs. I set the chmod to 775 but it didn't work. I then even set it to 4775 thinking this would totally make it work but it still didn't.I'm obviously giving permissions to the wrong file.
The error says:
Quote:
httpd not running, trying to start (13)Permission denied: make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down Unable to open logs But I didn't find httpd anywhere on my machine.
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Sep 1, 2011
I have a droid phone, and I have ubuntu 9 running on it. This is done by chrooting since the phone runs a linux kernel. And it works... I have a question though. tightvncserver does work, and its able to listen on 127.0.0.1.. Its how you view your X session. So you chroot to Ubuntu, then start vncserver. Then switch back to android and login to ubuntu via vnc client. but apache, mysql, and postgresql do not work. Well. They dont seem too.. except for mysql. Mysql will start but only if you tell it not to use networking by saying skip-networking in my.cnf
Mysql says: mysqld cant create ip socket permission denied Apache2 says it can find 127.0.0.1 but doesnt actually run same with postgresql... All seem to be compiled with arm architecture. So why does tightvncwork? Why is it so special? How can it listen on the loop back (127.0.0.1) when nothing else can...
I have /proc and /dev bind to the chroot side. I can run ifconfig okay, and I can run /etc/init.d/networking start okay.. But apache2, mysql, etc have problems binding. I have removed apparmor even though technically its not running, but I removed it and its configuration files, just because I thought perhaps mysql looks at apparmor, but I doubted it.
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May 21, 2009
I have a cgi script that tries to get the IP address of a domain. the Domain is defined in Bind, yet it can not resolve it. I put the domain in the host file and it then gives a Error: unable to create socket - Permission denied
I figure I have to do some code changes to the script but here I would like an explaination as to the error I am getting.
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Jul 19, 2011
I'm trying to add a key public key for my dev box which is a vm running ubuntu natty, and I am unable to connect via ssh. I've tried rsa and dsa, as well as these commands:
exec ssh-agent bash
ssh-add ~/.ssh/id_rsa
ssh-add ~/.ssh/id_dsa
[Code]...
I think I've found the error by running sudo /usr/sbin/sshd -Dd, but I'm not sure how to fix it:
ebug1: sshd version OpenSSH_5.8p1 Debian-1ubuntu3
debug1: read PEM private key done: type RSA
debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048
[Code]...
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Apr 5, 2011
Code: # traceroute -I 69.12.32.2 Note: the -i and -I options were exchangedfor compability with LBL traceroute Use -I for ICMP, and -i <ifname> to specify the interface name unable to create ICMP send socket: Permission denied Note that the command was done as root. This worked in 11.3.
And yes, it works without the "-I". But it should work with the "-I". One shouldn't have to boot into Windows, just to run "tracert" there.
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Oct 20, 2010
How does bind system call names a socket.Code:bind(server_sockfd, (struct sockaddr *)&server_address, server_len);I see use of bind in majority of programms as above.But any of the arguments is not the name of socket.
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Sep 26, 2010
I am trying to create a socket to listen for a bootp response so I am using a PF_PACKET socket so that I get the response based on my mac. My problem is that I don't want to hear all traffic (as I do now) so would like to use a specific port number and bind to it.
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Jun 26, 2011
I am learning network prgramming in linux in c,and try to build a server and in this server I want to bind the listening socket to a paricular Ip address and port.Bind function is showing error,I did not want to use wild card. Here is the code.
#include<stdio.h>
#include<sys/socket.h>
#include<strings.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<string.h>
[Code]...
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Mar 2, 2011
I am in the process of setting up a new server (Debian - Lenny - now updated to Squeeze) and every things were going fine. But unfortunately from today , whenever a user login to ftp, it says
550 permission denied and not able upload / edit or remove any files ( i am able to see all files and folders)
Yesterday it was working fine..
I tried using bot Pure Ftp and Proftp and the issue is common
What I am trying to do is
add a unix user exalmple through adduser command with default directory for the user as /var/www/example.com (shell enabled)
owner of example.com is example
and using the above user name and password to ftp files to the folder
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Apr 19, 2011
i've query regarding, user creation in Linux( RHEL 5), i.e, i've created a user ([root@localhost ~]#useradd slash ) and switched into that user, but am not able to run commands in it......It's displaying a message saying, PERMISSION DENIED. Do we need to provide any permissions while creating a user
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Jul 26, 2011
We are using ubuntu 10.04 desktop version.ls > /dev/lp0 permission denied in user account we need user can access lp0 /usblp0. Our printing module is lp0 writing technology example dir >prn.
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Jan 9, 2010
I have configured samba server.My requirement was that the path which i have to share was /srv/www/htdocs.With this the shared path for developer user was /srv/www/htdocs/projects.
So in the smb.conf file i made the entries as following:
After that root user was able login to both /srv/www/htdocs and also project folder and developer was only able to login to projects folder.That was according to my requirement but now the problem is that when developer is trying to edit any file in projects folder he is getting error that you dont have permissions to change this file.But developer should be able to edit any files. What changes i need to do now.
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Jun 10, 2010
I'm using ubuntu,i have a bin file under my /usr/bin, if i run the command under root user i'm getting no problem an it works fine,if i try it in with differnent user im getting
Code:
semctl:premission denied
so how can i edit my bin file and change it to right permission
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Oct 16, 2009
I created a user called gdev.
As root, I made a dir /var/www/html/test
I have done these same steps on numerous machines. However, in this instance, gdev cannot cd into test/
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Mar 9, 2011
I've just recently started learning shell scripting and I've been working on a basic csh script, but I've been having a few problems. Here's the script
Code:
#!/bin/csh
echo Enter a file name
$< = FILE ##Name of file
echo enter a size (in kilobytes) to monitor
SIZETOMON = $< ##Size value that's input by user
du -k $FILE = $SIZE ##Size of the file that the user wishes to monitor
while (1)
if $SIZE > $SIZETOMON then
echo ALERT: File size is greater than $SIZETOMON
end
And here's the output
Code:
/home/lucer/foo.txt: Permission denied.
Badly placed ()'s.
I'm not really sure what the issue is with the "badly placed ()'s" or why it won't let me access files that I can access with the same shell when it's not in a script.
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Mar 18, 2009
I have a written a java code to ftp a file from the windows box to unix box. It keeps giving me the following error : "java.io.FileNotFoundException: PORT 204,63,56,5,16,78: 550 Permission denied." I am able to ftp manually from windows to unix.
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Jul 20, 2011
I am writing a bash script to run everyday and output results to a file. When the same results are produced i want to overwrite the line from the previous day. (Or remove and add). So if the script finds a variable in a line. i want it to output the results to that line . sed -i did not work for me; sed: couldn't open temporary file ./sedTvOCEg: Permission denied
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Jun 30, 2011
I am writing a ping kind of program for my own application. This application needs to run with non root user privileges. This needs me to create a raw socket. But the ping connection is failing because of creating raw socket with non root user.How can I run the application successfully with non root user privileges using raw socket creation?
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May 1, 2010
i was trying to execute the following on Kubuntu.
Code:
echo 0 > /proc/sys/vm/vdso_enabled
But it says "permission denied". Probably I need root user rights. How to get it in Kubuntu?
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Jan 6, 2010
I have a secondary disk which holds a /home directory structure from a previous install of Linux. I installed a new version on a new primary drive and mounted this secondary drive as the new /home. Problem is, even though the users are the same names and I can access the home directories for the users, I cannot login directly to their home directories, as I get the following error: -
Code:
login as: [me]
[me]@[machine]'s password:
Last login: Wed Jan 6 18:34:33 2010 from [machine]
Could not chdir to home directory /home/[me]: Permission denied
[[me]@[machine] /]$
Now, since the usernames are correct and the users are in the passwd file with the correct home directory paths, could it be user ID's that are different or something else? It's not as though I cannot access the home directories for the users, simply that I cannot log directly into them from a login prompt.
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Mar 8, 2011
iam just trying to connect to server which accepts one client and server will read(blocking operation) infinitely, but After closing the client socket the server "read operation" is returning zero and "errno variable(in errno.h)" value is also zero. how can i detect whether a client socket is closed/active..?
client.c
Serv_Addr.sin_family = AF_INET;
Serv_Addr.sin_addr.s_addr = inet_addr("127.0.0.1");
Serv_Addr.sin_port = htons(26553);
if( 0 > connect (Serv_Fds,&Serv_Addr,sizeof(Serv_Addr)) )
{
perror("connect");
return 0;
[Code]....
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Feb 23, 2009
I am currently trying to get a B.A.T.M.A.N mesh network up and running. the thing uses UDP port 4305 for broadcasting to nearby nodes and it seems this port is closed or used by something else.
now i have tried to open this port with commands like
Code:
iptables -A INPUT -p udp --dport 4305 -j ACCEPT
iptables -A OUTPUT -p udp --dport 4305 -j ACCEPT
it still gives me the same error saying the socket cannot connect.any way for me to scan that udp port, see what is blocking it and open the thing up ?
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Jul 26, 2010
If I open a raw SCTP socket, am I able to bind to a specific port? (I only want to see SCTP packets from a particular IP address AND port.) Or, any raw SCTP socket, regardless of port binding , will get all SCTP packets received by the OS from that IP address? The port doesn't matter and is ignored.
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Jul 6, 2010
i'm writing a simple program of client socket program. Here below is the code sample which i'm writing...
Code:
//tcp_client.c
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include<string.h>
#include<stdlib.h>
[Code].....
the above code works fine.if we copmile and run ./a.exe 192.xx.xx.xxx 1111 and press enter it works fine..everytime it asks "Please enter the message: " and if give that will be displayed in server. but my problem is i dont want to print everytime "Please enter the message: " i just want to feed some words one by one to the socket.
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Mar 30, 2009
im getting that error in my code for some reason. I compiled my code, and when i try to run this server it throws me an error on my call to setsocketopt(). The only way it can reach that part of my loop is if it succeeds when it calls sock() so I dont understand why the error says its an operation on a non-socket. Im just trying to set up a server to pass messages from a client to it a viceversa. Here is the code:
Code:
int main()
{
int socket_fd, new_socket_fd, k;
struct addrinfo hints, *server_info, *p;
struct sockaddr_storage peer_address;
code....
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May 9, 2010
I am encountering a wierd problem in FC12. When I try to lunch a program that listens to a lower port such as 80 or any one that is less than 1024, I always get "Permission denied" error message (I am running it as root!).Then I try starting httpd service daemon that listens to 80, no errors, the daemon started and listend to 80.PS: I checked selinux, it has been disabled.Do you have any knowledge on this case? BTW, the kernel version is:2.6.31.5-127.fc12.i686.PAE #1 SMP Sat Nov 7 21:25:57 EST 2009 i686 i686 i386 GNU/Linux
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May 4, 2011
I finally got the certs to configure:
openvpn --config server.conf
Tue May 3 17:26:27 2011 OpenVPN 2.1.1 i686-redhat-linux-gnu [SSL] [LZO2] [EPOLL] [PKCS11] built on Jan 5 2010
Tue May 3 17:26:27 2011 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Tue May 3 17:26:27 2011 Diffie-Hellman initialized with 1024 bit key
Tue May 3 17:26:27 2011 TLS-Auth MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ]
Tue May 3 17:26:27 2011 ROUTE default_gateway=192.168.122.1
Tue May 3 17:26:27 2011 TUN/TAP device tun0 opened
Tue May 3 17:26:27 2011 TUN/TAP TX queue length set to 100
Tue May 3 17:26:27 2011 /sbin/ip link set dev tun0 up mtu 1500
Tue May 3 17:26:27 2011 /sbin/ip addr add dev tun0 local 10.8.0.1 peer 10.8.0.2
Tue May 3 17:26:27 2011 /sbin/ip route add 10.8.0.0/24 via 10.8.0.2
Tue May 3 17:26:27 2011 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ]
Tue May 3 17:26:27 2011 Socket Buffers: R=[114688->131072] S=[114688->131072]
Tue May 3 17:26:27 2011 UDPv4 link local (bound): [undef]:1194
Tue May 3 17:26:27 2011 UDPv4 link remote: [undef]
Tue May 3 17:26:27 2011 MULTI: multi_init called, r=256 v=256
Tue May 3 17:26:27 2011 IFCONFIG POOL: base=10.8.0.4 size=62
Tue May 3 17:26:27 2011 IFCONFIG POOL LIST
Tue May 3 17:26:27 2011 Initialization Sequence Completed
But openvpn still won't start; where to go from here.
Tue May 3 17:54:25 2011 TCP/UDP: Socket bind failed on local address 192.168.122.3:1194: Address already in use
Tue May 3 17:54:25 2011 Exiting
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Feb 23, 2011
I did check the manpath and the files located there.just seems that some pages are missing.
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