Programmatically probe video chipset
Is there an API or other means to determine what video card, namely the chipset, that the user has installed on his machine? Thanks, Paul __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://vger.kernel.org/lkml/
Programmatically probe video chipset
Is there an API or other means to determine what video card, namely the chipset, that the user has installed on his machine? Thanks, Paul __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://vger.kernel.org/lkml/
Ioctl CDROMRESET has no effect
I'm attempting to reset a CDROM using the CDROMRESET
ioctl. The reset command only seems to reset the
device if the device is not mounted. If the device is
mounted, the reset command seems to have no effect.
With the device unmounted, sending the reset command
causes the drive to become active and I see the
activity light light up. With the device mounted, the
activity light does nothing. I also can't open the
CD-ROM drive using the eject button after resetting a
mounted CD.
It seems the reset command should work even if the OS
thinks the device is mounted for error recovery.
Here is my test program:
#include
#include
#include
#include
#include
#include
int main(int argc, char* argv[])
{
int fd, result;
fd = open("/dev/hda", O_RDONLY|O_NONBLOCK);
if (fd < 0)
{
perror("open");
return fd;
}
result = ioctl(fd, CDROMRESET, 1);
if (result < 0)
perror("ioctl");
close(fd);
return 0;
}
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Ioctl CDROMRESET has no effect
I'm attempting to reset a CDROM using the CDROMRESET
ioctl. The reset command only seems to reset the
device if the device is not mounted. If the device is
mounted, the reset command seems to have no effect.
With the device unmounted, sending the reset command
causes the drive to become active and I see the
activity light light up. With the device mounted, the
activity light does nothing. I also can't open the
CD-ROM drive using the eject button after resetting a
mounted CD.
It seems the reset command should work even if the OS
thinks the device is mounted for error recovery.
Here is my test program:
#include stdio.h
#include sys/ioctl.h
#include sys/types.h
#include sys/stat.h
#include fcntl.h
#include linux/cdrom.h
int main(int argc, char* argv[])
{
int fd, result;
fd = open("/dev/hda", O_RDONLY|O_NONBLOCK);
if (fd 0)
{
perror("open");
return fd;
}
result = ioctl(fd, CDROMRESET, 1);
if (result 0)
perror("ioctl");
close(fd);
return 0;
}
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Linuxrc runs with PID 7
This is a followup question to my previous question
"Why isn't init at PID 1."
Previoulsy I was calling init from within linuxrc.
Linuxrc was a sash script, so the sash script
supposedly had PID 1. Now I've removed the script and
have a C program for linuxrc.
I'm still not running at PID 1 but at 7. The linuxrc
program looks like:
int main(int argc, char* argv[])
{
printf("PID = %i\n", getpid());
}
When I boot and linuxrc is executed, PID equals 7.
Any ideas as to why this is and how I can run at PID
1?
Thanks,
Paul
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Why isn't init PID 1?
Hello, I have a bootable linux CD that runs a custom init. Under most versions of linux init runs as process ID one. Under my bootable CD, it runs as process ID 15. I need it to run as PID 1 so that I can execute a kill(-1,15) without killing init. The boot CD uses and initrd image to load drivers. The linuxrc file looks like: #!/bin/sash aliasall echo "Loading aic7xxx module" insmod /lib/aic7xxx.o echo "Loading ips module" insmod /lib/ips.o ips=ioctlsize:512000 echo "Loading sg module" insmod /lib/sg.o echo "Loading FAT modules" insmod /lib/fat.o insmod /lib/vfat.o echo "Mounting /proc" mount -t proc /proc /proc init umount /proc Does it run as PID 15 because I execute insmod and mount before running init? Thanks, Paul __ Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Why isn't init PID 1?
Hello, I have a bootable linux CD that runs a custom init. Under most versions of linux init runs as process ID one. Under my bootable CD, it runs as process ID 15. I need it to run as PID 1 so that I can execute a kill(-1,15) without killing init. The boot CD uses and initrd image to load drivers. The linuxrc file looks like: #!/bin/sash aliasall echo "Loading aic7xxx module" insmod /lib/aic7xxx.o echo "Loading ips module" insmod /lib/ips.o ips=ioctlsize:512000 echo "Loading sg module" insmod /lib/sg.o echo "Loading FAT modules" insmod /lib/fat.o insmod /lib/vfat.o echo "Mounting /proc" mount -t proc /proc /proc init umount /proc Does it run as PID 15 because I execute insmod and mount before running init? Thanks, Paul __ Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Linuxrc runs with PID 7
This is a followup question to my previous question
"Why isn't init at PID 1."
Previoulsy I was calling init from within linuxrc.
Linuxrc was a sash script, so the sash script
supposedly had PID 1. Now I've removed the script and
have a C program for linuxrc.
I'm still not running at PID 1 but at 7. The linuxrc
program looks like:
int main(int argc, char* argv[])
{
printf("PID = %i\n", getpid());
}
When I boot and linuxrc is executed, PID equals 7.
Any ideas as to why this is and how I can run at PID
1?
Thanks,
Paul
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Forcefully eject CD-ROM
Hello, I am trying to eject my bootable CD-ROM after the user is finished using it. The problem is that something has locked the CD-ROM and every command I send fails with a "resource busy" error. I use a custom init program to mount and chroot to the CD. I then start X-windows and my application. When the application quits I send SIGTERM signals to X-windows and the other processes I spawned for them to shutdown as well. I then try to unmount and eject the CD but I am not able to do so. If I don't start the GUI then I can umount and eject the CD with no problems. Nothing is different except I didn't fork the X process. But if I start the GUI and then kill the GUI I can't unmount and eject the CD. It's as if X-windows is still using the CD even though I killed it with the SEGTERM signal. Is there a way to tell the CD to unmount and eject regardless of what Linux thinks is the 'proper' thing to do? Am I killing the GUI wrong? Thanks __ Do You Yahoo!? Yahoo! Auctions - Buy the things you want at great prices. http://auctions.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Forcefully eject CD-ROM
Hello, I am trying to eject my bootable CD-ROM after the user is finished using it. The problem is that something has locked the CD-ROM and every command I send fails with a "resource busy" error. I use a custom init program to mount and chroot to the CD. I then start X-windows and my application. When the application quits I send SIGTERM signals to X-windows and the other processes I spawned for them to shutdown as well. I then try to unmount and eject the CD but I am not able to do so. If I don't start the GUI then I can umount and eject the CD with no problems. Nothing is different except I didn't fork the X process. But if I start the GUI and then kill the GUI I can't unmount and eject the CD. It's as if X-windows is still using the CD even though I killed it with the SEGTERM signal. Is there a way to tell the CD to unmount and eject regardless of what Linux thinks is the 'proper' thing to do? Am I killing the GUI wrong? Thanks __ Do You Yahoo!? Yahoo! Auctions - Buy the things you want at great prices. http://auctions.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Undoing chroot?
Hello, I have a linux bootable CD which executes a custom init. The job of init is to figure out on which device the CD is located. After finding the CD, init mounts the device and executes a CHROOT to set the root directory to the CD. After I'm done I'd like to umount the CD and then eject it by sending an IOCTL eject command. But since I executed a CHROOT I can't umount the CD, umount complains that the device is busy. So how do you reverse a CHROOT? BTW, I use an initrd image and init is a C program, not a script. Thanks __ Do You Yahoo!? Yahoo! Auctions - Buy the things you want at great prices. http://auctions.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Undoing chroot?
Hello, I have a linux bootable CD which executes a custom init. The job of init is to figure out on which device the CD is located. After finding the CD, init mounts the device and executes a CHROOT to set the root directory to the CD. After I'm done I'd like to umount the CD and then eject it by sending an IOCTL eject command. But since I executed a CHROOT I can't umount the CD, umount complains that the device is busy. So how do you reverse a CHROOT? BTW, I use an initrd image and init is a C program, not a script. Thanks __ Do You Yahoo!? Yahoo! Auctions - Buy the things you want at great prices. http://auctions.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Linux driver: __get_free_pages()
Our driver is trying to allocate a DMA buffer to flash an adapter's firmware. This can require as much as 512K ( of contiguous DMA memory ). We are using the function __get_free_pages( GFP_KERNEL | GFP_DMA, order ) . The call is failing if 'order' is greater than 6. The problem is seen on systems with system memory of only 64MB. It works fine on systems with more memory. Does it make sense that a system with 64MB would not have 512K ( contiguous ) available? The most that can be allocated successfully on the 64MB system appears to be 256K. (Nothing else is running that would eat up 64MB of memory). Does this make sense and/or is there another way that the DMA memory could be allocated successfully? __ Do You Yahoo!? Yahoo! Photos - Share your holiday photos online! http://photos.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Linux driver: __get_free_pages()
Our driver is trying to allocate a DMA buffer to flash an adapter's firmware. This can require as much as 512K ( of contiguous DMA memory ). We are using the function __get_free_pages( GFP_KERNEL | GFP_DMA, order ) . The call is failing if 'order' is greater than 6. The problem is seen on systems with system memory of only 64MB. It works fine on systems with more memory. Does it make sense that a system with 64MB would not have 512K ( contiguous ) available? The most that can be allocated successfully on the 64MB system appears to be 256K. (Nothing else is running that would eat up 64MB of memory). Does this make sense and/or is there another way that the DMA memory could be allocated successfully? __ Do You Yahoo!? Yahoo! Photos - Share your holiday photos online! http://photos.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
'console=' kernel parameter questions
Hello, I am running an unmodified RedHat 6.2 kernel (kernel version 2.2.14-5.0) I am trying to redirect the linux startup messages to the serial port. I've added the 'console=' parameter to my lilo.conf file. I've tried several iterations such as 'console=ttys0','console=cua0','console=ttys0,9600n8', etc They all fail to produce any output to the serial port although they do remove the text from my screen. When I have booted RedHat I can type 'echo blah > /dev/cua0' and I see text output from the serial port. Interestingly when I try to echo to /dev/ttys0 I get an IO error message. I'm using a null modem cable connect to a windows machine to watch the serial port. My question: why can I see output when booted into RedHat but not when booting the OS? I've read that you have to compile this feature into the kernel. Does anyone know if RedHat's kernel come with this feature built in? Your help appreciated, Paul __ Do You Yahoo!? Yahoo! Photos - Share your holiday photos online! http://photos.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
'console=' kernel parameter questions
Hello, I am running an unmodified RedHat 6.2 kernel (kernel version 2.2.14-5.0) I am trying to redirect the linux startup messages to the serial port. I've added the 'console=' parameter to my lilo.conf file. I've tried several iterations such as 'console=ttys0','console=cua0','console=ttys0,9600n8', etc They all fail to produce any output to the serial port although they do remove the text from my screen. When I have booted RedHat I can type 'echo blah /dev/cua0' and I see text output from the serial port. Interestingly when I try to echo to /dev/ttys0 I get an IO error message. I'm using a null modem cable connect to a windows machine to watch the serial port. My question: why can I see output when booted into RedHat but not when booting the OS? I've read that you have to compile this feature into the kernel. Does anyone know if RedHat's kernel come with this feature built in? Your help appreciated, Paul __ Do You Yahoo!? Yahoo! Photos - Share your holiday photos online! http://photos.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
xterm: no available ptys
Hello, I have created a trimmed down /dev directory to be used with my custom bootable Linux CD. I've run into a problem where I can't start an xterm. I get the error... xterm: no available ptys I'm not sure which device I'm missing in /dev. I'm no expert on how the tty's and stuff work so feel free to fill me in. Everything else seems to work fine on the CD. Here is what my /dev directory looks like now: /dev: console cua0 cua1 cua2 cua3 fb fb0 fb1 fb2 fb3 fb4 fb5 fb6 fb7 fd0 fd1 hda hdb hdc hdd kmem listing mem mouse null psaux pts |...0 ram ram0 ram1 ram2 ram3 ramdisk scd0 scd1 scd2 scd3 scd4 scd5 scd6 scd7 tty tty0 tty1 tty2 ttyp0 ttyp1 ttyp2 ttyp3 ttyp4 urandom zero Am I missing something? Any help appreciated! __ Do You Yahoo!? Thousands of Stores. Millions of Products. All in one Place. http://shopping.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
xterm: no available ptys
Hello, I have created a trimmed down /dev directory to be used with my custom bootable Linux CD. I've run into a problem where I can't start an xterm. I get the error... xterm: no available ptys I'm not sure which device I'm missing in /dev. I'm no expert on how the tty's and stuff work so feel free to fill me in. Everything else seems to work fine on the CD. Here is what my /dev directory looks like now: /dev: console cua0 cua1 cua2 cua3 fb fb0 fb1 fb2 fb3 fb4 fb5 fb6 fb7 fd0 fd1 hda hdb hdc hdd kmem listing mem mouse null psaux pts |...0 ram ram0 ram1 ram2 ram3 ramdisk scd0 scd1 scd2 scd3 scd4 scd5 scd6 scd7 tty tty0 tty1 tty2 ttyp0 ttyp1 ttyp2 ttyp3 ttyp4 urandom zero Am I missing something? Any help appreciated! __ Do You Yahoo!? Thousands of Stores. Millions of Products. All in one Place. http://shopping.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
init= parameter doesn't work
Hello, I am attempting to move all of the root files and folders into a single directory /linux on the root file system. I then use the kernel parameter init=/linux/sbin/init to get things rolling but the kernel panics. When I boot linux, everything seems to work ok until the kernel tries to execute init. The root device is mounted as the root file system successfully and I see a message stating so. But then I get a kernel panic which says it couldn't find init and to try using the init= kernel parameter. I'm guessing there is something missing from the root directory that the kernel needs but isn't there. I tried moving the /dev directory back to the root directory on the root file system but this didn't help things. Anyone have any clues? Thanks. P.S. The reason I'm doing this is because I'm creating a bootable CD but have other things on the CD in addition to linux. __ Do You Yahoo!? Get Yahoo! Mail - Free email you can access from anywhere! http://mail.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
init= parameter doesn't work
Hello, I am attempting to move all of the root files and folders into a single directory /linux on the root file system. I then use the kernel parameter init=/linux/sbin/init to get things rolling but the kernel panics. When I boot linux, everything seems to work ok until the kernel tries to execute init. The root device is mounted as the root file system successfully and I see a message stating so. But then I get a kernel panic which says it couldn't find init and to try using the init= kernel parameter. I'm guessing there is something missing from the root directory that the kernel needs but isn't there. I tried moving the /dev directory back to the root directory on the root file system but this didn't help things. Anyone have any clues? Thanks. P.S. The reason I'm doing this is because I'm creating a bootable CD but have other things on the CD in addition to linux. __ Do You Yahoo!? Get Yahoo! Mail - Free email you can access from anywhere! http://mail.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Removing boot text
We are using Linux as a bootable CD for system configuration. We would like to keep all the information displayed at bootup hidden. The main reason for this is because our users see words such as "error" and "failed" and it bothers them (though there is nothing wrong). Anyone know how other than changing the kernel code? Thanks __ Do You Yahoo!? Yahoo! Photos - 35mm Quality Prints, Now Get 15 Free! http://photos.yahoo.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
