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Dan Williams e105b8bfc7 sysfs: add /sys/dev/{char,block} to lookup sysfs path by major:minor ... Why?: There are occasions where userspace would like to access sysfs attributes for a device but it may not know how sysfs has named the device or the path. For example what is the sysfs path for /dev/disk/by-id/ata-ST3160827AS_5MT004CK? With this change a call to stat(2) returns the major:minor then userspace can see that /sys/dev/block/8:32 links to /sys/block/sdc. What are the alternatives?: 1/ Add an ioctl to return the path: Doable, but sysfs is meant to reduce the need to proliferate ioctl interfaces into the kernel, so this seems counter productive. 2/ Use udev to create these symlinks: Also doable, but it adds a udev dependency to utilities that might be running in a limited environment like an initramfs. 3/ Do a full-tree search of sysfs. [kay.sievers@vrfy.org: fix duplicate registrations] [kay.sievers@vrfy.org: cleanup suggestions] Cc: Neil Brown <neilb@suse.de> Cc: Tejun Heo <htejun@gmail.com> Acked-by: Kay Sievers <kay.sievers@vrfy.org> Reviewed-by: SL Baur <steve@xemacs.org> Acked-by: Kay Sievers <kay.sievers@vrfy.org> Acked-by: Mark Lord <lkml@rtr.ca> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>		17 years ago
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accessibility	…
acpi	APCI: revert another duplicated patch	17 years ago
amba	…
ata	…
atm	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6	17 years ago
auxdisplay	…
base	sysfs: add /sys/dev/{char,block} to lookup sysfs path by major:minor	17 years ago
block	m68k: Return -ENODEV if no device is found	17 years ago
bluetooth	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	17 years ago
cdrom	…
char	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6	17 years ago
clocksource	…
connector	…
cpufreq	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq	17 years ago
cpuidle	…
crypto	…
dca	…
dio	dio: use dio_match_device() in dio_bus_match()	17 years ago
dma	…
edac	…
eisa	…
firewire	…
firmware	…
gpio	…
gpu	…
hid	USB: fix usb_reset_device and usb_reset_composite_device(take 3)	17 years ago
hwmon	Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 into next	17 years ago
i2c	…
ide	Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-fixes-2.6	17 years ago
ieee1394	…
infiniband	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6	17 years ago
input	Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 into next	17 years ago
isdn	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	17 years ago
leds	…
lguest	…
macintosh	Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 into next	17 years ago
mca	…
md	Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm	17 years ago
media	Merge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb	17 years ago
memstick	…
message	…
mfd	mfd: let asic3 use mem resource instead of bus_shift	17 years ago
misc	fujitsu-laptop: depends on INPUT	17 years ago
mmc	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc	17 years ago
mtd	…
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	17 years ago
nubus	…
of	…
oprofile	…
parisc	…
parport	…
pci	pci kernel-doc fatal error	17 years ago
pcmcia	Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-fixes-2.6	17 years ago
pnp	PNPACPI: add support for HP vendor-specific CCSR descriptors	17 years ago
power	…
ps3	…
rapidio	…
rtc	…
s390	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6	17 years ago
sbus	drivers/sbus/: cleanups	17 years ago
scsi	scsi_dh: Verify "dev" is a sdev before accessing it.	17 years ago
serial	atmel_serial: Fix tty_port breakage	17 years ago
sh	…
sn	…
spi	…
ssb	…
tc	…
telephony	…
thermal	…
uio	…
usb	sysfs: add /sys/dev/{char,block} to lookup sysfs path by major:minor	17 years ago
video	export c2p	17 years ago
virtio	…
w1	…
watchdog	…
xen	Merge branch 'x86/paravirt-spinlocks' into x86/for-linus	17 years ago
zorro	zorro: use memory_read_from_buffer	17 years ago
Kconfig	…
Makefile	gpu: re-order GPU subdirectory vs char for AGP vs DRM startup.	17 years ago