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file-systems: Refactor check-file-system.

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* gnu/build/file-systems.scm (check-file-system): Use file-system type
  specific checker.
  (check-ext2-file-system): New variable.
This commit is contained in:
David Craven 2017-01-07 21:09:15 +01:00
parent 313880c73a
commit 26905ec8a6
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1 changed files with 34 additions and 19 deletions
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53
gnu/build/file-systems.scm
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@ -135,6 +135,14 @@ (define (ext2-superblock-volume-name sblock)
#f if SBLOCK has no volume name."
(null-terminated-latin1->string (sub-bytevector sblock 120 16)))
(define (check-ext2-file-system device)
"Return the health of an ext2 file system on DEVICE."
(match (status:exit-val
(system* "e2fsck" "-v" "-p" "-C" "0" device))
(0 'pass)
(1 'errors-corrected)
(2 'reboot-required)
(_ 'fatal-error)))
;;;
@ -400,26 +408,33 @@ (define (resolve find-partition spec fmt)
(define (check-file-system device type)
"Run a file system check of TYPE on DEVICE."
(define fsck
(string-append "fsck." type))
(define check-procedure
(cond
((string-prefix? "ext" type) check-ext2-file-system)
(else #f)))
(let ((status (system* fsck "-v" "-p" "-C" "0" device)))
(match (status:exit-val status)
(0
#t)
(1
(format (current-error-port) "'~a' corrected errors on ~a; continuing~%"
fsck device))
(2
(format (current-error-port) "'~a' corrected errors on ~a; rebooting~%"
fsck device)
(sleep 3)
(reboot))
(code
(format (current-error-port) "'~a' exited with code ~a on ~a; \
spawning Bourne-like REPL~%"
fsck code device)
(start-repl %bournish-language)))))
(if check-procedure
(match (check-procedure device)
('pass
#t)
('errors-corrected
(format (current-error-port)
"File system check corrected errors on ~a; continuing~%"
device))
('reboot-required
(format (current-error-port)
"File system check corrected errors on ~a; rebooting~%"
device)
(sleep 3)
(reboot))
('fatal-error
(format (current-error-port)
"File system check on ~a failed; spawning Bourne-like REPL~%"
device)
(start-repl %bournish-language)))
(format (current-error-port)
"No file system check procedure for ~a; skipping~%"
device)))
(define (mount-flags->bit-mask flags)
"Return the number suitable for the 'flags' argument of 'mount' that