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plougher / squashfs-tools

tools to create and extract Squashfs filesystems

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option to fix permissions

hadmut opened this issue · comments

commented

Hi,

would be convenient if mksquashfs had an option to modify permissions of all files and directories, e.g. o= to completely remove permissions for others (which is not the same as -root-mode), or a+rX to make all files and directories readable.

regards

commented

It already does with the chmod action, for example given the following test directory

phillip@phoenix:/tmp$ unsquashfs -lls test.sqsh
drwx------ phillip/users            52 2023-03-29 03:09 squashfs-root
drwx-w--w- phillip/users             3 2023-03-29 03:09 squashfs-root/dir
-rw--w--w- phillip/users             2 2023-03-29 03:09 squashfs-root/file1
-rw--w--w- phillip/users             2 2023-03-29 03:09 squashfs-root/file2

The command with the action option

phillip@phoenix:/tmp$ mksquashfs test test.sqsh -quiet -no-progress -noappend -action "chmod(o=)@true"

will produce

phillip@phoenix:/tmp$ unsquashfs -lls test.sqsh
drwx------ phillip/users            52 2023-03-29 03:09 squashfs-root
drwx-w---- phillip/users             3 2023-03-29 03:09 squashfs-root/dir
-rw--w---- phillip/users             2 2023-03-29 03:09 squashfs-root/file1
-rw--w---- phillip/users             2 2023-03-29 03:09 squashfs-root/file2

Again, the command with the action option

phillip@phoenix:/tmp$ mksquashfs test test.sqsh -quiet -no-progress -noappend -action "chmod(a+rX)@true"

will produce

phillip@phoenix:/tmp$ unsquashfs -lls test.sqsh
drwxr-xr-x phillip/users            52 2023-03-29 03:09 squashfs-root
drwxrwxrwx phillip/users             3 2023-03-29 03:09 squashfs-root/dir
-rw-rw-rw- phillip/users             2 2023-03-29 03:09 squashfs-root/file1
-rw-rw-rw- phillip/users             2 2023-03-29 03:09 squashfs-root/file2

The "true" test will match on any file. In place of "true" you can use other tests to select which files the chmod action is applied to, e.g.

phillip@phoenix:/tmp$ mksquashfs test test.sqsh -quiet -no-progress -noappend -action "chmod(a+r)@type(f)"

Will only apply the action to files.

phillip@phoenix:/tmp$ unsquashfs -lls test.sqsh
drwx------ phillip/users            52 2023-03-29 03:09 squashfs-root
drwx-w--w- phillip/users             3 2023-03-29 03:09 squashfs-root/dir
-rw-rw-rw- phillip/users             2 2023-03-29 03:09 squashfs-root/file1
-rw-rw-rw- phillip/users             2 2023-03-29 03:09 squashfs-root/file2

Actions are fully documented here https://github.com/plougher/squashfs-tools/blob/master/ACTIONS-README

commented

No response, and so I assume the above is what was requested.