'Sys call' presentation slideshows

CONTENTS

CONTENTS. INTRODUCTION to SYSTEM CALLS FUNCTION vs SYSTEM CALL TYPES and EXAMPLES ERRORS and SYSVECTORS HOW DO ALL THESE WORK TOGETHER ADDING A SYSCALL STRACE(with examples) WHAT ABOUT WINDOWS PROBLEMS REFERENCES. INTRODUCTION to SYSTEM CALLS.

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W4118 Operating Systems Interrupt and System Call in Linux

W4118 Operating Systems Interrupt and System Call in Linux. Instructor: Junfeng Yang. Logistics. Find two teammates before next Thursday Post ads in CourseWorks. Last lecture. OS structure Monolithic v.s. microkernel Modern OS: modules Virtual machine Intro to Linux Interrupts in Linux.

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Running Untrusted Application Code: Sandboxing

Running Untrusted Application Code: Sandboxing. Running untrusted code. We often need to run buggy/unstrusted code: programs from untrusted Internet sites: toolbars, viewers, codecs for media player old or insecure applications: ghostview, outlook

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Running Untrusted Application Code: Sandboxing

Running Untrusted Application Code: Sandboxing. Running untrusted code. We often need to run buggy/unstrusted code: programs from untrusted Internet sites: toolbars, viewers, codecs for media player old or insecure applications: ghostview, outlook

563 views • 45 slides

Running Untrusted Application Code: Sandboxing

Running Untrusted Application Code: Sandboxing. Running untrusted code. We often need to run buggy/unstrusted code: programs from untrusted Internet sites: toolbars, viewers, codecs for media player old or insecure applications: ghostview, outlook

472 views • 45 slides

Running Untrusted Application Code: Sandboxing

Running Untrusted Application Code: Sandboxing. Running untrusted code. We often need to run buggy/unstrusted code: programs from untrusted Internet sites: toolbars, viewers, codecs for media player old or insecure applications: ghostview, outlook

632 views • 44 slides

Running Untrusted Application Code: Sandboxing

Running Untrusted Application Code: Sandboxing. Running untrusted code. We often need to run buggy/unstrusted code: programs from untrusted Internet sites: toolbars, viewers, codecs for media player old or insecure applications: ghostview, outlook

455 views • 44 slides

Eran Tromer Slides credit: Dan Boneh , Stanford course CS155, 2010

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Chapter 5: ????

Chapter 5: ????. ????????? ??????? ?????? getuid() ??? ???????? mysyscall ?????????????. ?????????(1). ?????????(2). ???????. arch/i386/kernel/traps.c arch/i386/kernel/entry.S ????????? sys_call_table system_call ? ret_from_sys_call include/linux/unistd.h ?????? ?????????

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System Calls

System Calls. Biju K Raveendran CS / IS Group, BITS Pilani. Why we need protection?. In single task / programming environment To protect OS from incorrect program In multiprogramming / multitasking environment To protect OS and other programs from incorrect program.

2.18k views • 24 slides

Tips for R3: Process Initialization

Tips for R3: Process Initialization. When we create processes to represent our 5 test procedures we must correctly initialize its context by placing values into its stack, data segment and extra segment.

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Ch 5 System Call

? 40 ? : System Call. Ch 5 System Call. Kernel a.out. User a.out. my code. library. inode table. (system) file table. user. main() { add( ); sub( ); printf( );. /. u-ofile. FILE ( local buffer file descriptor }. fd. /. a. a. 0 1 2 3 4.

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trap()

364 views • 10 slides