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What is the difference between fork and vfork system calls ?

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What is the difference between fork and vfork system calls ?
posted Aug 29, 2014 by Neelam

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During the fork() system call the Kernel makes a copy of the parent process’s address space and attaches it to the child process.
But the vfork() system call do not makes any copy of the parent’s address space, so it is faster than the fork() system call. The child process as a result of the vfork() system call executes exec() system call. The child process from vfork() system call executes in the parent’s address space (this can overwrite the parent’s data and stack ) which suspends the parent process until the child process exits.

answer Aug 30, 2014 by Amit Kumar Pandey
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