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On Fri, Feb 10, 2006 at 03:32:28PM +0100, Joerg Schilling wrote: > > Chapter and verse, please? > > > > Can you please list the POSIX standard, section, and line number which > > states that a particular device must always have the same st_rdev > > across reboots, and hot plugs/unplugs? > > A particular file on the system must not change st_dev while the system > is running. > > http://www.opengroup.org/onlinepubs/009695399/basedefs/sys/stat.h.html 1) File != device. 2) st_dev != st_rdev 3) The reference you specified says nothing about st_dev (or st_rdev) being invariant while the system is runnning. Line number, please? 4) POSIX/SUS is very careful not to define what dev_t. Use of mknod to create block/chracter devices, and depending on any properties of dev_t is likely to get you into trouble. 5) The st_rdev of a particular file, like /dev/hda *does* remain invariant. The device which it points to may change, but that's a different matter --- and POSIX/SUS is very deliberately silent on your subject. THEREFORE, your claim that Linux's behaviour violates POSIX/SUS is demonstrably false. Quod erat demonstratum. - Ted - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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