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3answers
56 views

System calls source code

C library provides functions such as write(),read(),open()...that we can use in our C program to make system calls. where can I find source code for these functions?
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1answer
42 views

Is there a system call to bind a file descriptor directly into another?

A read() & write() loop would probably be as good as what I'm looking for, but nevertheless is anything like that around or is it impossible because of an obstacle I didn't envisage ? I'm curious
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1answer
9 views

Table or list of system call failure modes?

I am wondering if there is a table or list of system call failure modes. A few examples: Can exit() fail due to the system being out of memory? Can open() fail due to the system reaching the max open ...
1
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1answer
51 views

Capture information of system-call

I have a QEMU-KVM hypervisor (ubuntu) with several VMs. What I want to do is capture all information of VMs system call to hypervisor (without any intervention to VM whatsoever) in real time within a ...
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1answer
392 views

Why system call hooking produces different result everytime in Linux/Android 2.6.29?

I have implemented system call hooking for Android 2.6.29 kernel through a LKM module. I am tracing down one Android app for system calls. But interestingly, it returns different results every time I ...
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0answers
67 views

Which Unixes support cross-device filesystem links (in particular for rename)?

Just read the following on the FreeBSD man page for the rename syscall: ... [EXDEV] The link named by to and the file named by from are on different logical devices (file systems). Note that ...
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0answers
26 views

Are system calls available in a chroot environment?

I'm experiencing a lot of compilation errors regarding missing system calls (e.g. error: '__NR_name_to_handle_at' undeclared (first use in this function)) with different projects (ganesha 2.1.0 ...
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0answers
275 views

Tracing system call on Ubuntu 12.04

The main task I have to carry out, is to trace the system call of processes in ubuntu 12.04 LTS. Problem is, I am unable to trace them continuously, i.e. as soon as they are added to the system, they ...
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0answers
492 views

adding system calls to kernel without recompiling during implementation

Could anyone tell me if it is possible to add several system calls to the linux kernel (version 2.6.35) and not have to recompile the kernel each time I change one of their implementations (i.e. ...