Description:
Writing Linux applications, porting to Linux.
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how to distinguish the ip throughput from ethernet and usb port
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Hi all thanks for reading :-) I'm a embedded Linux fan the kernel version is 2.6.x my board has two ports ehternet/usb can be used to bear the ip throughput. so a user can config the board by httpd via the both ports. but sometime I want to block the access to httpd from the usb port, how can I do that? Is there a easy way to go?... more »
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sub shell implementation
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Hi Everybody, this is in related to this thread: somehow i decided it has grown enough, so thought of starting a new one... [link] Anyways, the point is that I have to implement a shell(same as... more »
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: Hands on Technical Training on Linux Device Driver
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Hello All, Kernel Programming is the key to the digital city of device drivers: If you know the language for drivers you can get a device to do almost anything you want. Learn how to write device drivers with the help of industry experts. This module emphasizes on approach of identifying and resolving the... more »
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optimisation techniques in usage of getmsg and putmsg for STREAMS
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Hi , I am using a STREAMS library LiS on Linux 2.6.18(Centos 5). The code uses getmsg/putmsg calls to read/write data. The data is written/read to E1/T1 links. It is also observed that the LiS library consumes high CPU. Please suggest some optimisation techniques that can be applied on getmsg/putmsg. Are there options like scatter reads/gather... more »
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Pluggable and encrypted home directories
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[ F'up to cold.apps. ] Hi! I had an idea this weekend and I'm wondering if anybody had the idea before me and already implemented it. First some background... What I have here is a setup with an encrypted home directory, which seems like a good idea, in particular for portable data which this is about. One... more »
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tryint to compile expect for arm
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Hi, I have cross compiled tcl and installed in the same directory by the prefix comand. Then I proceeded to compilation of expect, but its giving this error: checking if WNOHANG requires _POSIX_SOURCE... configure: error: Expect can't be cross compiled Its failing in configuration stage: I am calling configuration by the follwing command:... more »
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Preventing process from ignoring resource limits
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Hi, I'm trying to develop an online judge, like the one you'd find at SPOJ ([link]). I've some doubts about a specific part of the program. The compilation is done on the server by exec()ing gcc with the source file as its argument in a forked process. Now, a CPU time limit is placed on the forked process using setrlimit() and on exceeding the... more »
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c code traversal
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Hi, Is there a tool or way to get the data struct relation by statically/ dynamically traversing the C code. struct a { struct b *sa; struct c *sb; int ia, ib; ...struct b { int ic; struct d *sc; ...struct d { int id; struct b *se; ...struct c { int ie; ...for the above, i need to get a graph as follows... more »
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declaration of memory barrier function
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Dear Linux Programmers, I am using fedora 10 with version of 2.6.27.5-117.fc10.x86_64 #1 SMP. I am looking for the system head file where memory barrier functions are declared. Thanks, dbtouch
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