Re: New system call wanted: fdreopen

[Kevin Easton]

Quoting Tristan Wibberley <tristan.wibberley@xxxxxxxxx>:

> Why
> ===
>
> A common idiom on Linux is to open a file and keep the fd open so that
> the underlying file can be unlinked from its directory. But if the file
> needs to be read from several different parts of the codebase then due to
> the file descriptor having exactly one read pointer those different parts
> must be synchronised which is a relatively difficult task.

Another alternative is to use pwrite() / pread(), which do not affect the file
pointer.  They're in POSIX.

    - Kevin


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