104 Unanswered Topics
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Below is the ip_options_build() in linux kernel 3.4, line 51 and 52: 51 if (opt->srr) 52 memcpy(iph+opt->srr+iph[opt->srr+1]-4, &daddr, 4); I understand that the two lines say, if source routing option is present, copy the destination address to the end of the option, that suggests that iph[opt->srr+1] is the length of … |
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I'm confused with the function: void * page_address(struct page *page) which (1) "convert a given page to its logical address" according to "Linux Kerenl developement 3rd edition" (2) "returns the linear address associated with the page frame" according to "understanding the linux kernel>>" (3) "returns the physical address of the … |
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Hi all, I have a Pentium 4 with hyper-threading on my Slackware machine. Currently I am running the non-SMP 2.6.24.5 kernel, but I want the option to be able to boot with the 2.6.33.4 SMP kernel as well. I already have Lilo installed on my computer and have a large … |
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Can anyone tell me how exactly does copy_from_user work....i mean other stuff apart from the checks tat are made regarding passing of valid addresses...etc...is there a VM mapping done.... |
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so my question here is when the parent exits before the child process...in linux....the reparenting is done within the same thread group rite!!??? ...and wots the role of the reaper..i mean after you find a suitable parent task..why is this reaper API called.. |
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Dear All, I have now better understanding of what chroot is about. I have read few link as below. [url]http://v2.robbyt.com/2008/howto/chrooted-sftp-with-openssh-5/[/url] [url]http://joedonner2001.wordpress.com/red-hat-el3/sftp-server-within-a-chroot-jail/[/url] My problem now is do I need to upgrade the openssh first in order to control acces to my server? Secondly there are few different methods confuse which is … |
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Hello all. i am trying to setup for an OpenCL product, a LINUX worksatation. Here is the issue: I am using Fedora 15, I have an Acer monitor AL1717F, and using NVIDIA GTX 570. The monitor is a VGA port, and I amusing a VGA-DVI converter. The issue is that … |
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hi i need to compile a kernel of Ubuntu from source code, and i had downloaded code and compile it after some time it gives error from directory [B]/net/ipv4/netfilter[/B] Error is : [CODE] CC [M] net/ipv4/netfilter/ipt_ecn.o net/ipv4/netfilter/ipt_ecn.c: In function âset_ect_ipâ: net/ipv4/netfilter/ipt_ecn.c:33: error: âXT_DSCP_MASKâ undeclared (first use in this function) net/ipv4/netfilter/ipt_ecn.c:33: … |
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Hi guyz. I need some help. I don`t kno what to do now. I updated my blackbuntu and my bb theme has been lost. What to do now? |
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hi all, I'm woundering why mounting of floppy drive takes lot of time in 2.6 when compard to 2.4 kernel? can antone please explain.or did i made any mistake in mounting. For mounting i gave #mount sourcedir destnationdir Thanks in advance. |
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nVidia has released new drivers and I am pretty sure Canonical has included it in its restricted packages already. However, whenever I use the nvidia drivers, the computer blacks out and there is no display at all. Can someone tell me what I need to do? Thank you |
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I have a System X3650 M3 IBM server that I would like to install Redhat Linux, but I get and error of can bot proceed due to GPT. Please advise me on how to proceed with the installation. I have already configured RAID 5 on it. Could this be the … |
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Hello again, I am running Ubuntu 10.10 on my toshiba laptop, and having problem that it can not turn on the fan, I searched on web and tried few of these command but no success, I would appreciate any help in this regard! code: sudo toshet -fan on required kernel … |
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Hello everybody, I am trying to get four operating systems running on my Laptop: Windows 7, Fedora, FreeBSD, OpenSolaris. I am have them on my hard-disk( because I can see them when I boot my computer from GParted CD), but I am not able to boot them. At any point … |
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I have a system that I am responsible for that is wrapping printouts around by a character. It is printing "@" at the first of every line and dropping the last character of the line. This began after a bad shutdown and a system cleaning. Any thoughts would be appreciated. … |
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hi , I have ubuntu 10.4 on cd and I tried to install it the following error occured at the begining : (process:257):GLib-Warning**:getpwuid_r():failed due to unknown user id(0) stdin:error0 plz tell me what to do |
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I've been using Mint 8 for a while on my Sony Vaio laptop without any problems. My laptop was recently stolen and I got a new Sony Vaio laptop, model VPCF127FX. I went ahead and installed the newest version of Mint, which is Mint9. Now the touchpad doesn't work and … |
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KQ Infotech Pvt. Ltd. is a globally focused software development and consulting firm headquartered in Pune, India, with core expertise in the field of systems and storage. Being a pure technology company, KQ believes in applying innovation to evolving technologies, the resultant of which is some highly ground-breaking products like … |
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What is your own experience in installing Fedora Linux Core 2? Is the progress fast? |
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Hi I will be getting into some linux kernel programming and network internal. Please tell me which is the best Linux distribution to install on my computers for making drastic changes to the TCP/IP stack and making new features, and possibly distributed computing? Drastic changes includes adding new protocols but … |
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What is the difference between supervisor call and system call? |
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Hi frenz , I came across get_user_pages() function . I found that this function is used when the there is no need of kernel buffering (buffer cache ) so the data from the device is directly placed in the userspace . But still i dnt know when and how to … |
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During runtime when a program asks for a memory block (say, by malloc()), its provided with a block of virtual addresses, say 0x10000000 to 0x1000A00 (for 32 bit). During the execution, other processes are incorporated into the main memory and pages 0x10000000-0x100000A0 are paged out. After some time, the program … |
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Recently I just try to scan using the above model. I use Xsane scanner sofware, it didn't work and than I try simple scan same thing. Nothing come out. But it could tell that this is a printer but not a scanner. So I need help to over come some … |
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Ubuntu on win 7 network.( 32 /64) Dell A810 all in one printer on win 7 machine. Ubuntu 10 can see network printer but no driver found (not surprising!) tried generic postscript PCL but wont print....it says its printing job 5 etc but no result! Any suggestions? Ta M |
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Hi I'm a bit of a newbie with this stuff, so I'm not 100% sure where to post this. Anyway I have a mini arm based PC for which I am trying to compile a php binary in cgi-mode, which supports sqlite. I am trying to cross compile from a … |
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I've been working on this paper for a while now, thinking I'm going down the right path only to find out it's wrong the night before it's due. Can someone tell me what I/O management is exactly? I was told I should be looking up the I/O architecture and figure … |
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Hi I'm trying to save the process status (stack/register/memory) so I can reload the process and run it from the stopped point (on the same host with the same configuration) Is it doable? |
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Hi everyone, I m creating VM on my centos 5.4 machine using qemu and kvm. My command is :: [B]virt-install --connect qemu:///system -n r1u1 -r 2047 --disk vol=rf/r1u1 --disk path=/home/devang/ubuntutest.iso,device=cdrom,bus=ide,perms=ro os-type linux --os-variant ubuntujaunty --accelerate[B] Where -- rf is V.G r1u1 is volume on rf. after running command i got … |
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Hi guys, I had a home ubuntu web server I was running which just died due to RAM failure. To keep the site going, I took out the HDD and swapped it on to another machine I had laying around. Luckily, I was able to boot it with no problem, … |
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