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syscalls: 'device-in-use?' returns #f upon EINVAL. 

This mirrors the behavior of the 'fdisk_device_is_used' function of
util-linux.

* guix/build/syscalls.scm (device-in-use?): Return #f upon EINVAL.
master
Ludovic Courtès 2019-01-16 17:43:52 +01:00
parent a1f5dfc202
commit 077589459c
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1 changed files with 5 additions and 0 deletions
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guix/build/syscalls.scm
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@ -701,6 +701,11 @@ backend device."
#f) #f)
((= err EBUSY) ((= err EBUSY)
#t) #t)
((= err EINVAL)
;; We get EINVAL for devices that have the GENHD_FL_NO_PART_SCAN flag
;; set in the kernel, in particular loopback devices, though we do seem
;; to get it for SCSI storage (/dev/sr0) on QEMU.
#f)
(else (else
(throw 'system-error "ioctl" "~A" (throw 'system-error "ioctl" "~A"
(list (strerror err)) (list (strerror err))