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https://github.com/libguestfs/libguestfs.git
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cd304ad838
Reflecting the purpose of this module now, which is to act as a place for utility functions shared only by the OCaml virt tools.
112 lines
3.3 KiB
OCaml
112 lines
3.3 KiB
OCaml
(* virt-dib
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* Copyright (C) 2015 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*)
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open Std_utils
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open Tools_utils
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open Common_gettext.Gettext
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open Printf
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let unit_GB howmany =
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(Int64.of_int howmany) *^ 1024_L *^ 1024_L *^ 1024_L
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let current_arch () =
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(* Turn a CPU into the dpkg architecture naming. *)
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match Guestfs_config.host_cpu with
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| "amd64" | "x86_64" -> "amd64"
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| "i386" | "i486" | "i586" | "i686" -> "i386"
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| arch when String.is_prefix arch "armv" -> "armhf"
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| arch -> arch
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let output_filename image_name = function
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| "squashfs" -> image_name ^ ".squash"
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| fmt -> image_name ^ "." ^ fmt
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let log_filename () =
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let tm = Unix.gmtime (Unix.time ()) in
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sprintf "%s-%d%02d%02d-%02d%02d%02d.log"
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prog (tm.Unix.tm_year + 1900) (tm.Unix.tm_mon + 1) tm.Unix.tm_mday
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tm.Unix.tm_hour tm.Unix.tm_min tm.Unix.tm_sec
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let var_from_lines var lines =
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let var_with_equal = var ^ "=" in
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let var_lines = List.filter (fun x -> String.is_prefix x var_with_equal) lines in
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match var_lines with
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| [] ->
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error (f_"variable ‘%s’ not found in lines:\n%s")
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var (String.concat "\n" lines)
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| [x] -> snd (String.split "=" x)
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| _ ->
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error (f_"variable ‘%s’ has more than one occurrency in lines:\n%s")
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var (String.concat "\n" lines)
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let string_index_fn fn str =
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let len = String.length str in
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let rec loop i =
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if i = len then raise Not_found
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else if fn str.[i] then i
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else loop (i + 1) in
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loop 0
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let digit_prefix_compare a b =
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let myint str =
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try int_of_string str
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with _ -> 0 in
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let mylength str =
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match String.length str with
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| 0 -> max_int
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| x -> x in
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let split_prefix str =
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let len = String.length str in
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let digits =
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try string_index_fn (fun x -> not (Char.isdigit x)) str
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with Not_found -> len in
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match digits with
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| 0 -> "", str
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| x when x = len -> str, ""
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| _ -> String.sub str 0 digits, String.sub str digits (len - digits) in
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let pref_a, rest_a = split_prefix a in
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let pref_b, rest_b = split_prefix b in
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match mylength pref_a, mylength pref_b, compare (myint pref_a) (myint pref_b) with
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| x, y, 0 when x = y -> compare rest_a rest_b
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| x, y, 0 -> x - y
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| _, _, x -> x
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let do_mkdir dir =
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mkdir_p dir 0o755
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let get_required_tool tool =
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try which tool
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with Executable_not_found tool ->
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error (f_"%s needed but not found") tool
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let require_tool tool =
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ignore (get_required_tool tool)
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let do_cp src destdir =
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let cmd = [ "cp"; "-t"; destdir; "-a"; src ] in
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if run_command cmd <> 0 then exit 1
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let ensure_trailing_newline str =
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if String.length str > 0 && str.[String.length str - 1] <> '\n' then str ^ "\n"
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else str
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let not_in_list l e =
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not (List.mem e l)
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