EmbLogic's Blog

PROJECT 00

completed ftp, tftp, telnet, ssh, nfs, dhcp servers.
working on cvs server.

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Project 00: Status

i have completed ftp,tftp,telnet,ssh,dhcp,nfs servers.

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Work Status

configuring ftp server again.

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Project 3 IPC: Server Client using Message Queues

Implemented
#Server Client using message queues and ran for 650 clients using 2 queues for receiving and sendg…
Issues Faced:
*The queues werent getting created… Have to be a superuser to create queues… Found system call perror(“”); very useful to detect the error in this case as it clearly states why the above operation wasnt successful.
*The sprintf() ans sscanf() which were used for data transfer werent working properly…..Resolved by sandwiching a character between two integers  in sscanf and sprintf.  Also couldnt send a large string %s using sprintf.
*The clients were accepting each others mail..Resolved by setting the msg type to pid of the client thru getpid()

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Work Status

shell scripting upto if command………done

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workstatus of project 00 g1

ftp,tftp,nfs is completed…………………… by jatinder singh
plz mention ur status in comment who come in project 00 g1

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Project 00 work status

I’ve completed ftp, tftp, telnet, nfs server configurations.

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ipc status: client-server using fifo and semaphores.

implemented client server program for around 400 clients using fifo and semaphores.
issues:-
while compilation gcc was unable to get the size for variable of union semun.

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Project 3 IPC:: Client-Server using fifo and semaphores

Implemented

#Client Server program using Semaphores.

**Issues Faced

1)union semun variable was not getting declared in the program….

Resolved by inserting the union semun definition in man semctl pages and removing unnecessary header files and including #include<limits.h>

2)The program is working well upto 597 clients working but after that resource error arises and states that resources are missing….

 

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Beagle board bring up issue

ifndef ICP_ROOT
$(warning ICP_ROOT is undefined. Please set the path to EP80579 release package directory \
“-> setenv ICP_ROOT <path>”)
all fastdep:
:
else

ifndef KERNEL_SOURCE_ROOT
$(error KERNEL_SOURCE_ROOT is undefined. Please set the path to the kernel source directory \
“-> setenv KERNEL_SOURCE_ROOT <path>”)
endif

# Ensure The ENV_DIR environmental var is defined.
ifndef ICP_ENV_DIR
$(error ICP_ENV_DIR is undefined. Please set the path to EP80579 driver environment.mk file \
“-> setenv ICP_ENV_DIR <path>”)
endif

ICP_ROOT

KERNEL_SOURCE_ROOT

and ICP_ENV_DIR are not defined ..

how to define these three variables??

 

Posted in Project 9: Embedded Linux on ARM | 2 Comments

TFTP File Transfer TimeOut Problem SOLVED ……………….

kindly check the SElinux policy on the SERVER PC because most of time whenever we restart pc the SElinux policy is reset
for example in my pc
[root@emblogic ~]# sestatus
SELinux status: enabled
SELinuxfs mount: /sys/fs/selinux
Current mode: enforcing
Mode from config file: enforcing
Policy version: 28
Policy from config file: targeted

[root@emblogic ~]# setenforce 0

[root@emblogic ~]# sestatus
SELinux status: enabled
SELinuxfs mount: /sys/fs/selinux
Current mode: permissive
Mode from config file: enforcing
Policy version: 28
Policy from config file: targeted

and now try to put or get file from server .

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nfs

in client site there is a problem of stale nfs file handle

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facing problem while mount command innfs

[root@localhost /]# mount -t nfs 192.168.0.21:/jatinde /mnt
mount.nfs: access denied by server while mounting 192.168.0.21:/jatinde

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execution of nfs when i feed my ip address in showmount command

root@localhost /]# showmount -e 192.168.0.13
clnt_create: RPC: Program not registered

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could not able to understand this command why we use it plz explain it

[root@localhost etc]# vim hosts

27.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
server-ip Server server
client1-ip Client1 Client1
client2-ip Client2 Client2

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