On 09/02/2015 09:44 AM, Hardik A Gohil wrote:
> Hello,
>
> Can any one explain me this script from
> rules/post/ptxd_make_image_common.make used while creating root.ubifs image
>
> DOPERMISSIONS := '{     \
>         if ($$1 == "f") \
>                 printf("chmod %s \".%s\"; chown %s.%s \".%s\";\n", $$5,
> $$2, $$3, $$4, $$2);    \
>         if ($$1 == "n") \
>                 printf("rm -f \".%s\"; mkdir -p \".`dirname \"%s\"`\";
> mknod -m %s \".%s\" %s %s %s; chown %s.%s \".%s\";\n", $$2, $$2, $$5,
> $$2, $$6, $$7, $$8, $$3, $$4, $$2);}'

This scripts generates chmod, chown commands to change the ownership and
permission of a file or generates commands to create device nodes with
given ownership and permissions.