gdb/testsuite/gdb.base/argv0-symlink.exp

   1 # Copyright 2013-2021 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # This testcase was originally for PR gdb/15415, a problem with the "run"
  17 # command expanding symlinks in the name of the program being run.
  18 # This test uses pathnames on build to create symbolic links on host and
  19 # expects the test program running on target to see those symbolic links.
  20 # Therefore, it can't work reliably on anything other than configurations
  21 # where build/host/target are all the same.
  22
  23 if { ![isnative] } {
  24     unsupported "argv0-symlink.exp not supported on non-native target"
  25     return -1
  26 }
  27
  28 if { [is_remote host] } {
  29     unsupported "argv0-symlink.exp not supported on remote host"
  30     return -1
  31 }
  32
  33 standard_testfile
  34
  35 set has_argv0 [gdb_has_argv0]
  36
  37 if { [build_executable ${testfile}.exp ${testfile} ${srcfile}] == -1 } {
  38     return -1
  39 }
  40
  41 set test "kept file symbolic link name"
  42 set filelink "${testfile}-filelink"
  43
  44 remote_file host delete [standard_output_file $filelink]
  45 set status [remote_exec host "ln -sf ${testfile} [standard_output_file $filelink]"]
  46 if {[lindex $status 0] != 0} {
  47     unsupported "$test (host does not support symbolic links)"
  48     return 0
  49 }
  50
  51 clean_restart "$filelink"
  52
  53 if ![runto_main] {
  54     untested "could not run to main"
  55     return -1
  56 }
  57
  58 gdb_test_no_output "set print repeats 10000"
  59 gdb_test_no_output "set print elements 10000"
  60
  61 if { $has_argv0 } {
  62     gdb_test {print argv[0]} "/$filelink\"" $test
  63 } else {
  64     unsupported $test
  65 }
  66
  67 # For a link named /PATH/TO/DIR/LINK, we want to check the output
  68 # against "/DIR/LINK", but computed in a way that doesn't make
  69 # assumptions about the test directory layout.
  70 set full_filelink [standard_output_file $filelink]
  71 set lastdir [file tail [file dirname $full_filelink]]
  72
  73 gdb_test "info inferiors" "/$lastdir/$filelink *" "$test for info inferiors"
  74
  75
  76 set test "kept directory symbolic link name"
  77 set dirlink "${testfile}-dirlink"
  78
  79 # 'ln -sf' does not overwrite symbol link to a directory.
  80 # 'remote_file host delete' uses stat (not lstat), therefore it refuses to
  81 # delete a directory.
  82 remote_exec host "rm -f [standard_output_file $dirlink]"
  83 set status [remote_exec host "ln -sf . [standard_output_file $dirlink]"]
  84 if {[lindex $status 0] != 0} {
  85     unsupported "$test (host does not support symbolic links)"
  86     return 0
  87 }
  88
  89 clean_restart "$dirlink/$filelink"
  90
  91 if ![runto_main] {
  92     untested "could not run to main"
  93     return -1
  94 }
  95
  96 gdb_test_no_output "set print repeats 10000"
  97 gdb_test_no_output "set print elements 10000"
  98
  99 if { $has_argv0 } {
 100     # gdbserver in extended-remote mode does not have this issue.
 101     # Plain remote does, however.
 102     if {[target_info gdb_protocol] != "extended-remote" || ![target_is_gdbserver]} {
 103         setup_kfail "*-*-*" gdb/15934
 104     }
 105     gdb_test {print argv[0]} "/$dirlink/$filelink\"" $test
 106 } else {
 107     unsupported $test
 108 }
 109
 110 gdb_test "info inferiors" "/$lastdir/$filelink *" "$test for info inferiors"