From: Nikita Menkovich <n.menkovich(a)sprinthost.ru&gt; --- resize/common_utils.ml | 19 +++++++++++++++++-- sysprep/main.ml | 22 ++++++++++++++++++---- sysprep/virt-sysprep.pod | 16 ++++++++++++++++ 3 files changed, 51 insertions(+), 6 deletions(-) diff --git a/resize/common_utils.ml b/resize/common_utils.ml index 37da8df..fd302f1 100644 --- a/resize/common_utils.ml +++ b/resize/common_utils.ml @@ -108,7 +108,8 @@ let rec replace_str s s1 s2 = s' ^ s2 ^ replace_str s'' s1 s2 ) -let rec string_split sep str = +(* Split a string into multiple strings at each separator. *) +let rec string_nsplit sep str = let len = String.length str in let seplen = String.length sep in let i = string_find str sep in @@ -116,7 +117,21 @@ let rec string_split sep str = else ( let s' = String.sub str 0 i in let s'' = String.sub str (i+seplen) (len-i-seplen) in - s' :: string_split sep s'' + s' :: string_nsplit sep s'' + ) + +(* Split a string at the first occurrence of the separator, returning + * the part before and the part after. If separator is not found, + * return the whole string and an empty string. + *) +let string_split sep str = + let len = String.length sep in + let seplen = String.length str in + let i = string_find str sep in + + if i = -1 then str, "" + else ( + String.sub str 0 i, String.sub str (i + len) (seplen - i - len) ) let string_random8 = diff --git a/sysprep/main.ml b/sysprep/main.ml index 49b0eb3..e5fe9c4 100644 --- a/sysprep/main.ml +++ b/sysprep/main.ml @@ -31,7 +31,7 @@ let () = Sysprep_operation.bake () (* Command line argument parsing. *) let prog = Filename.basename Sys.executable_name -let debug_gc, operations, g, selinux_relabel, quiet = +let debug_gc, operations, g, selinux_relabel, quiet, mount_opts = let debug_gc = ref false in let domain = ref None in let dryrun = ref false in @@ -43,6 +43,7 @@ let debug_gc, operations, g, selinux_relabel, quiet = let selinux_relabel = ref `Auto in let trace = ref false in let verbose = ref false in + let mount_opts = ref "" in let display_version () = let g = new G.guestfs () in @@ -79,7 +80,7 @@ let debug_gc, operations, g, selinux_relabel, quiet = eprintf (f_"%s: you cannot pass an empty argument to --enable\n") prog; exit 1 ); - let ops = string_split "," ops in + let ops = string_nsplit "," ops in let opset = List.fold_left ( fun opset op_name -> try Sysprep_operation.add_to_set op_name opset @@ -115,6 +116,7 @@ let debug_gc, operations, g, selinux_relabel, quiet = "--format", Arg.Set_string format, s_"format" ^ " " ^ s_"Set format (default: auto)"; "--list-operations", Arg.Unit list_operations, " " ^ s_"List supported operations"; "--long-options", Arg.Unit display_long_options, " " ^ s_"List long options"; + "--mount-options", Arg.Set_string mount_opts, s_"opts" ^ " " ^ s_"Set mount options (/:noatime;/var:rw,noatime)"; "-q", Arg.Set quiet, " " ^ s_"Don't print log messages"; "--quiet", Arg.Set quiet, " " ^ s_"Don't print log messages"; "--selinux-relabel", Arg.Unit force_selinux_relabel, " " ^ s_"Force SELinux relabel"; @@ -183,6 +185,15 @@ read the man page virt-sysprep(1). let trace = !trace in let verbose = !verbose in + (* Parse the mount options string into a function that maps the + * mountpoint to the mount options. + *) + let mount_opts = !mount_opts in + let mount_opts = + List.map (string_split ":") (string_nsplit ";" mount_opts) in + let mount_opts mp = + try List.assoc mp mount_opts with Not_found -> "" in + if not quiet then printf (f_"Examining the guest ...\n%!"); @@ -193,7 +204,7 @@ read the man page virt-sysprep(1). add g dryrun; g#launch (); - debug_gc, operations, g, selinux_relabel, quiet + debug_gc, operations, g, selinux_relabel, quiet, mount_opts let do_sysprep () = (* Inspection. *) @@ -212,7 +223,10 @@ let do_sysprep () = let mps = List.sort cmp mps in List.iter ( fun (mp, dev) -> - try g#mount dev mp + (* Get mount options for this mountpoint. *) + let opts = mount_opts mp in + + try g#mount_options opts dev mp; with Guestfs.Error msg -> eprintf (f_"%s (ignored)\n") msg ) mps; diff --git a/sysprep/virt-sysprep.pod b/sysprep/virt-sysprep.pod index 5b4b058..bbf4cca 100755 --- a/sysprep/virt-sysprep.pod +++ b/sysprep/virt-sysprep.pod @@ -153,6 +153,22 @@ fields on the same line are the description of the operation. Before libguestfs 1.17.33 only the first (operation name) field was shown and all operations were enabled by default. +=item B<--mount-options> mp:opts[;mp:opts;...] + +Set the mount options for each mountpoint in the guest. Use a +semicolon-separated list of C<mountpoint:options> pairs. You may need +to quote this list to protect it from the shell. + +For example: + + --mount-options "/:noatime" + +will mount the root directory with C<notime>. This example: + + --mount-options "/:noatime;/var:rw,nodiratime" + +will do the same, plus mount C</var> with C<rw,nodiratime>. + =item B<-q> =item B<--quiet> -- 1.8.3.1