New xorriso-dd-target option -trust_lsblk_udev

xorriso-dd-target/xorriso-dd-target

@@ -15,7 +15,7 @@
 # announces.
 
 xdt_print_version() {
-  echo "xorriso-dd-target , version 1.5.3 , 2020.01.08.204757"
+  echo "xorriso-dd-target , version 1.5.3 , 2020.02.12.145929"
 }
 
 
@@ -123,6 +123,10 @@ xdt_print_usage() {
   echo "                    If no filesystems are detected and the program"
   echo "                    has no superuser power, the device is not advised."
   echo "                    If -DO_WRITE is given, run umount and dd by sudo." 
+  echo " -trust_lsblk_udev  Suppress the reason no_fs_while_not_su- if lsblk"
+  echo "                    is linked with libudev.so. In this case it is very"
+  echo "                    likely that lsblk can retrieve FSTYPE even if"
+  echo "                    run by a non-priviledged user."
   echo " -image_file PATH   Set the path of the image file which shall be"
   echo "                    written to a device. Its size will be set as"
   echo "                    -min_size."
@@ -220,6 +224,7 @@ xdt_reset_job() {
   xdt_dummy_force=
   xdt_no_pacifier=
   xdt_do_plug_test=
+  xdt_trust_lsblk_udev=
 
   # Status
   xdt_sudo_cmd=
@@ -233,6 +238,7 @@ xdt_reset_job() {
 }
 
 ## Predict superuser power. Possibly enable sudo with lsblk -o FSTYPE and dd.
+## Also predict whether lsblk -o FSTYPE will bring results as non-root.
 xdt_predict_su_power() {
   if test "$(whoami)" = "root"
   then
@@ -251,6 +257,16 @@ xdt_predict_su_power() {
       return 11
     fi
   fi
+
+  # lsblk linked with libudev.so usually can obtain filesystem info
+  # without superuser powers.
+  if test -n "$xdt_trust_lsblk_udev"
+  then
+    if ldd "$xdt_lsblk_cmd" | grep '\tlibudev\.so' >/dev/null
+    then
+      xdt_lsblk_fs_wo_su=y
+    fi
+  fi
   return 0
 }
 
@@ -308,6 +324,9 @@ xdt_arg_interpreter() {
     elif test "X$xdt_i" = "X-look_for_iso"
     then
       xdt_look_for_iso=y
+    elif test "X$xdt_i" = "X-trust_lsblk_udev"
+    then
+      xdt_trust_lsblk_udev=y
     elif test "X$xdt_i" = "X-with_sudo"
     then
       xdt_with_sudo=y
@@ -604,7 +623,7 @@ xdt_list_devices() {
     # Decide whether the found filesystems look dispensible enough
     xdt_reasons="${xdt_reasons}${xdt_good_fs}${xdt_bad_fs}"
     if test "${xdt_bad_fs}${xdt_good_fs}" = "" \
-       && test -z "$xdt_have_su_power"
+       && test -z "$xdt_have_su_power" && test -z "$xdt_lsblk_fs_wo_su"
     then
       xdt_yucky=y
       xdt_reasons="${xdt_reasons}no_fs_while_not_su- "

xorriso-dd-target/xorriso-dd-target.1

@@ -9,7 +9,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH XORRISO-DD-TARGET 1 "Version 1.5.3, Jan 7, 2020"
+.TH XORRISO-DD-TARGET 1 "Version 1.5.3, Fep 12, 2020"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -498,6 +498,16 @@ program as superuser.
 If \-DO_WRITE \-with_sudo is given, then the programs umount and dd will be run
 by sudo, too.
 .TP
+\fB\-trust_lsblk_udev\fR
+Suppress the reason no_fs_while_not_su\- if lsblk is linked with libudev.so.
+In this case it is likely that lsblk can retrieve FSTYPE even if run
+by a non\-priviledged user.
+.br
+This option is intended for use by frontend programs which are certain
+that they do not encounter a udev\-using version of lsblk which nevertheless
+fails to detect existing filesystems. Human users should better acquire
+superuser powers if reason no_fs_while_not_su\- is reported.
+.TP
 \fB\-image_file\fR PATH
 Set the path of the image file which shall be written to a device. Its size
 will be set as \-min_size.

xorriso-dd-target/xorriso-dd-target.info

@@ -387,6 +387,15 @@ File: xorriso-dd-target.info,  Node: Options,  Next: Examples,  Prev: Overview,
      need to run the whole program as superuser.
      If -DO_WRITE -with_sudo is given, then the programs umount and dd
      will be run by sudo, too.
+-trust_lsblk_udev
+     Suppress the reason no_fs_while_not_su- if lsblk is linked with
+     libudev.so.  In this case it is likely that lsblk can retrieve
+     FSTYPE even if run by a non-priviledged user.
+     This option is intended for use by frontend programs which are
+     certain that they do not encounter a udev-using version of lsblk
+     which nevertheless fails to detect existing filesystems.  Human
+     users should better acquire superuser powers if reason
+     no_fs_while_not_su- is reported.
 -image_file PATH
      Set the path of the image file which shall be written to a device.
      Its size will be set as -min_size.
@@ -491,19 +500,20 @@ File: xorriso-dd-target.info,  Node: CommandIdx,  Next: ConceptIdx,  Prev: Legal
 [index]
 * Menu:
 
-* -DO_WRITE write image file to device:  Options.              (line 48)
+* -DO_WRITE write image file to device:  Options.              (line 57)
-* -dummy report but do not perform:      Options.              (line 59)
+* -dummy report but do not perform:      Options.              (line 68)
-* -dummy_force show raw copy commands:   Options.              (line 61)
+* -dummy_force show raw copy commands:   Options.              (line 70)
-* -help print help text to stdout:       Options.              (line 68)
+* -help print help text to stdout:       Options.              (line 77)
-* -image_file set path of disk image file: Options.            (line 45)
+* -image_file set path of disk image file: Options.            (line 54)
 * -list_all print list of disk devices:  Options.              (line 15)
 * -list_long print extra device info:    Options.              (line 18)
 * -look_for_iso demand presence of ISO 9660: Options.          (line 33)
 * -max_size set size limit for device:   Options.              (line 24)
 * -min_size set size limit for device:   Options.              (line 29)
-* -no_pacifier do not show dd progress:  Options.              (line 55)
+* -no_pacifier do not show dd progress:  Options.              (line 64)
 * -plug_test detect target device plugging: Options.           (line  7)
-* -version print version text to stdout: Options.              (line 65)
+* -trust_lsblk_udev suppress no_fs_while_not_su-: Options.     (line 45)
+* -version print version text to stdout: Options.              (line 74)
 * -with_sudo run lsblk, umount, dd by sudo: Options.           (line 38)
 * -with_vendor_model add drive info to advice: Options.        (line 22)
 
@@ -517,21 +527,22 @@ File: xorriso-dd-target.info,  Node: ConceptIdx,  Next: Top,  Prev: CommandIdx,
 * Menu:
 
 * Bugs, reporting:                       Bugreport.            (line  6)
-* dd progress, do not show, -no_pacifier: Options.             (line 55)
+* dd progress, do not show, -no_pacifier: Options.             (line 64)
 * Device info, print extra, -list_long:  Options.              (line 18)
 * Device size, set limit, -max_size:     Options.              (line 24)
 * Device size, set limit, -min_size:     Options.              (line 29)
 * Disk devices, print list, -list_all:   Options.              (line 15)
-* disk image file, set path, -image_file: Options.             (line 45)
+* disk image file, set path, -image_file: Options.             (line 54)
-* disk image file, write to device, -DO_WRITE: Options.        (line 48)
+* disk image file, write to device, -DO_WRITE: Options.        (line 57)
 * Drive info, add to advice, -with_vendor_model: Options.      (line 22)
-* help text, print to stdout, -help:     Options.              (line 68)
+* help text, print to stdout, -help:     Options.              (line 77)
 * ISO 9660, demand presence on target, -look_for_iso: Options. (line 33)
 * lsblk, umount, dd, run by sudo, -with_sudo: Options.         (line 38)
-* only report, do not perform, -dummy:   Options.              (line 59)
+* only report, do not perform, -dummy:   Options.              (line 68)
 * Problems, reporting:                   Bugreport.            (line  6)
-* raw copy commands, show, -dummy_force: Options.              (line 61)
+* raw copy commands, show, -dummy_force: Options.              (line 70)
 * Reasons, list of:                      Reasons.              (line  6)
+* suppress no_fs_while_not_su-, -trust_lsblk_udev: Options.    (line 45)
 * Target device, detect by plugging, -plug_test: Options.      (line  7)
 * Use case, detect intended device by plugging: Plugtest.      (line  6)
 * Use case, evaluate particular given devices: Givendevices.   (line  6)
@@ -540,7 +551,7 @@ File: xorriso-dd-target.info,  Node: ConceptIdx,  Next: Top,  Prev: CommandIdx,
 * Use case, show commands for writing to a not advised device: Unwise.
                                                                (line  6)
 * Use case, write image to an advised device: Dowrite.         (line  6)
-* version text, print to stdout, -version: Options.            (line 65)
+* version text, print to stdout, -version: Options.            (line 74)
 * xorriso-dd-target, options:            Options.              (line  6)
 
 
@@ -556,12 +567,12 @@ Node: Dowrite7955
 Node: Unwise9336
 Node: Reasons10958
 Node: Options13539
-Node: Examples16636
+Node: Examples17147
-Node: Files16809
+Node: Files17320
-Node: Seealso16967
+Node: Seealso17478
-Node: Bugreport17133
+Node: Bugreport17644
-Node: Legal17720
+Node: Legal18231
-Node: CommandIdx18431
+Node: CommandIdx18942
-Node: ConceptIdx19697
+Node: ConceptIdx20281
 
 End Tag Table

xorriso-dd-target/xorriso-dd-target.texi

@@ -50,7 +50,7 @@
 @c man .\" First parameter, NAME, should be all caps
 @c man .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 @c man .\" other parameters are allowed: see man(7), man(1)
-@c man .TH XORRISO-DD-TARGET 1 "Version 1.5.3, Jan 7, 2020"
+@c man .TH XORRISO-DD-TARGET 1 "Version 1.5.3, Fep 12, 2020"
 @c man .\" Please adjust this date whenever revising the manpage.
 @c man .\"
 @c man .\" Some roff macros, for reference:
@@ -630,6 +630,18 @@ program as superuser.
 If -DO_WRITE -with_sudo is given, then the programs umount and dd will be run
 by sudo, too.
 @c man .TP
+@item -trust_lsblk_udev
+@kindex -trust_lsblk_udev   suppress no_fs_while_not_su-
+@cindex suppress no_fs_while_not_su-, -trust_lsblk_udev
+Suppress the reason no_fs_while_not_su- if lsblk is linked with libudev.so.
+In this case it is likely that lsblk can retrieve FSTYPE even if run
+by a non-priviledged user.
+@*
+This option is intended for use by frontend programs which are certain
+that they do not encounter a udev-using version of lsblk which nevertheless
+fails to detect existing filesystems. Human users should better acquire
+superuser powers if reason no_fs_while_not_su- is reported.
+@c man .TP
 @item -image_file PATH
 @kindex -image_file   set path of disk image file
 @cindex disk image file, set path, -image_file

xorriso/xorriso_timestamp.h

@@ -1 +1 @@
-#define Xorriso_timestamP "2020.01.20.132834"
+#define Xorriso_timestamP "2020.02.12.145929"