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1answer
792 views

Why do strace/truss sometimes 'fix' stuck processes?

Sometimes you have a stuck process that's been stuck for a while, and as soon as you go to poke at it with strace/truss just to see what's going on, it gets magically unstuck and continues to run! So ...
0
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1answer
63 views

Which address space is used in system calls? physical? or virtual?

Explanation There’s two kind of address space virtual and physical. On the physical model (typically used by the kernel) the memory is bounded and each address correspond to physical ones. The ...
0
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1answer
592 views

Interrupt Descriptor Table and System Call Table?

Anyone please help me find out the relation between these two. Read somewhere that "The IDT is initialized one first time by the BIOS routine but Linux does it one more time when it take control." ...
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0answers
41 views

why Linux 64 bits system calls table is different

I just looked on the net on linux system calls numbers, and I found different numbers whether it is a 32 bits or 64 bits linux version. Why did Linux change the ordering of system calls ?? wouldn't ...
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0answers
168 views

getting error while adding a system call

I'm using Ubuntu 12.04(64bit) and installed kernel version linux-2.6.37.3. My device is ASUS x201ev net-book(64 bit). I'm providing the link of procedure i used. i edited unistd_64.h file also and ...
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0answers
8 views

Adding supplementary group id to process

I'd like to add addition sgid to a running process. If i'm superuser, is there any option (system call) to change this (or any other process credential) without running it from a different user or ...