Copying and overwriting a file using file descriptor


 
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# 1  
Old 10-26-2010
Copying and overwriting a file using file descriptor

Hi ,

i have two basic requirement on linux platform . I am using C language to do this .
1) copying one file to another (assuming i know their file descriptors)
2) Overwriting a file using it file descriptor .

Please guide.

regards
Aki
# 2  
Old 10-26-2010
Is this homework?
# 3  
Old 10-26-2010
We have a homework forum for homework questions.

The simple answer is to call fdopen(file_descr, mode). File descriptors are only valid within a process, or in a child process. For linux check out sendfile.
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