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Date: Thu, 14 Feb 2008 09:44:55 +0000 From: "Tom Van Looy" <assarix@...dora.be> To: "rzryyvzy" <rzryyvzy@...shmail.net>, linux-kernel@...r.kernel.org Subject: Re: Is there a You can create a symlink to /dev/null and name it whatever you want? $ ln -s /dev/null tempfile $ echo blablabla > tempfile $ wc tempfile 0 tempfile >----- Oorspronkelijk bericht ----- >Van: rzryyvzy [mailto:rzryyvzy@...shmail.net] >Verzonden: donderdag, februari 14, 2008 10:30 AM >Aan: linux-kernel@...r.kernel.org >Onderwerp: Is there a "blackhole" /dev/null directory? > >Hello Linux Kernel Hackers, > >/dev/null is often very useful, specially if programs force to save data in some file. But some programs like to creates different temporary file names, so /dev/null could no more work. > >What is with a "/dev/null"-directory? >I mean a "blackhole pseudo directory" which eats every write to null. > >Here is how it could work: >mount -t nulldir nulldir /dev/nulldir > >Now if a program does a create(2), >it creates in the memory the file with its fd. >Then if a program does a write(2) to the fd, it eats the writes and give out fakely it has written the number of bytes. >When the program calls does a close(2) of the fd, then the complete inode is deleted in the memory. > >The directory should be permanently empty except for the inodes with open file descriptors. So only inode information would be temporary saved in this "nulldir tmpfs" directory. > >Is there already existing a possibility to create a null directory? >-- >Best regards, >Mika Lawando > >-- >E-Mail sent with anti-spam site TrashMail.net! >Free disposable email addresses: http://www.trashmail.net/ >-- >To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >the body of a message to majordomo@...r.kernel.org >More majordomo info at http://vger.kernel.org/majordomo-info.html >Please read the FAQ at http://www.tux.org/lkml/ > > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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