view scripts/test/losetup.test @ 1087:b73a61542297 draft

I've finally gotten 'cpio' into a shape where it could be useable. This version can archive and extract directories, sockets, FIFOs, devices, symlinks, and regular files. Supported options are -iot, -H FMT (which is a dummy right now). It only writes newc, and could read newc or newcrc. This does NOT implement -d, which essentially is equivalent to mkdir -p $(dirname $FILE) for every file that needs it. Hard links are not supported, though it would be easy to add them given a hash table or something like that. I also have not implemented the "<n> blocks" output on stderr. If desired, I can add it pretty simply. There is one assumption this makes: that the mode of a file, as mode_t, is bitwise equivalent to the mode as defined for the cpio format. This is true of Linux, but is not mandated by POSIX. If it is compiled for a system where that is false, the archives will not be portable.
author Isaac Dunham <>
date Mon, 14 Oct 2013 11:15:22 -0500
parents 24ee3b04af3b
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[ -f ] && .

if [ "$(id -u)" -ne 0 ]
  echo "SKIPPED: losetup (not root)"
  continue 2>/dev/null

#testing "name" "command" "result" "infile" "stdin"

truncate -s 1M blah.img &&
FILE="$(readlink -f blah.img)"
DEV="$(printf '%04d' $(stat -t blah.img | awk '{print $7}'))"
NODE="$(awk '{print $7}')"

losetup -f 
losetup -f -s
losetup -f file
testing "cat" "cat && echo yes" "oneyes\n" "" "one"
testing "cat -" "cat - && echo yes" "oneyes\n" "" "one"
testing "cat file1 file2" "cat file1 file2" "one\ntwo\n"  "" ""
testing "cat - file"      "cat - file1"     "zero\none\n" "" "zero\n"
testing "cat file -"      "cat file1 -"     "one\nzero\n" "" "zero\n"

testing "cat file1 notfound file2" \
        "cat file1 notfound file2 2>stderr && echo ok ; cat stderr; rm stderr" \
        "one\ntwo\ncat: notfound: No such file or directory\n" "" ""

testing "cat file1" \
        "cat /proc/self/exe > file1 && cmp /proc/self/exe file1 && echo yes" \
        "yes\n" "" ""

testing "cat - file1" \
        "cat - file1 | diff -a -U 0 - file1 | tail -n 1" \
        "-hello\n" "" "hello\n"

testing "cat > /dev/full" \
        "cat - > /dev/full 2>stderr && echo ok; cat stderr; rm stderr" \
        "cat: xwrite: No space left on device\n" "" "zero\n"

losetup -d

rm blah.img