#   Copyright 2002-2021 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# This file was written by Corinna Vinschen <vinschen@redhat.com>

if [target_info exists gdb,nofileio] {
    verbose "Skipping fileio.exp because of no fileio capabilities."
    continue
}


standard_testfile

if {[is_remote host]} {
    set outdir .
} else {
    set outdir [standard_output_file {}]
}

if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" \
	   executable \
	   [list debug "additional_flags=-DOUTDIR=\"$outdir/\""]] != "" } {
    untested "failed to compile"
    return -1
}

# Create and source the file that provides information about the compiler
# used to compile the test case.

if [get_compiler_info] {
    return -1
}

set dir2 [standard_output_file dir2.fileio.test]
if {[file exists $dir2] && ![file writable $dir2]} {
    system "chmod +w $dir2"
}
system "rm -rf [standard_output_file *.fileio.test]"

set oldtimeout $timeout
set timeout [expr "$timeout + 60"]

# Start with a fresh gdb.

gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}
gdb_test_no_output "set print sevenbit-strings"
gdb_test_no_output "set print address off"
gdb_test_no_output "set width 0"

if ![runto_main] then {
    perror "couldn't run to breakpoint"
    continue
}

gdb_test "break stop" "Breakpoint .*$srcfile.*" 

set stop_msg ".*Breakpoint .* stop \\(\\) at.*$srcfile:.*static void stop \\(void\\) {}.*"

gdb_test continue \
"Continuing\\..*open 1:.*OK$stop_msg" \
"Open a file"

gdb_test continue \
"Continuing\\..*open 2:.*EEXIST$stop_msg" \
"Creating already existing file returns EEXIST"

gdb_test continue \
"Continuing\\..*open 3:.*EISDIR$stop_msg" \
"Open directory for writing returns EISDIR"

gdb_test continue \
"Continuing\\..*open 4:.*ENOENT$stop_msg" \
"Opening nonexistant file returns ENOENT"

gdb_test "continue" ".*" ""

catch "system \"chmod -f -w [standard_output_file nowrt.fileio.test]\""

gdb_test continue \
"Continuing\\..*open 5:.*EACCES$stop_msg" \
"Open for write but no write permission returns EACCES"

gdb_test continue \
"Continuing\\..*write 1:.*OK$stop_msg" \
"Writing to a file"

gdb_test continue \
"Continuing\\..*write 2:.*EBADF$stop_msg" \
"Write using invalid file descriptor returns EBADF"

gdb_test continue \
"Continuing\\..*write 3:.*EBADF$stop_msg" \
"Writing to a read-only file returns EBADF"

gdb_test continue \
"Continuing\\..*read 1:.*OK$stop_msg" \
"Reading from a file"

gdb_test continue \
"Continuing\\..*read 2:.*EBADF$stop_msg" \
"Read using invalid file descriptor returns EBADF"

gdb_test continue \
"Continuing\\..*lseek 1:.*OK$stop_msg" \
"Lseeking CUR a file"

gdb_test continue \
"Continuing\\..*lseek 2:.*OK$stop_msg" \
"Lseeking END a file"

gdb_test continue \
"Continuing\\..*lseek 3:.*OK$stop_msg" \
"Lseeking SET a file"


gdb_test continue \
"Continuing\\..*close 1:.*OK$stop_msg" \
"Closing a file"

gdb_test continue \
"Continuing\\..*close 2:.*EBADF$stop_msg" \
"Closing an invalid file descriptor returns EBADF"

gdb_test continue \
"Continuing\\..*stat 1:.*OK$stop_msg" \
"Stat a file"

gdb_test continue \
	"Continuing\\..*stat 2:.*(ENOENT|EFAULT)$stop_msg" \
"Stat a NULL pathname returns ENOENT or EFAULT"

gdb_test continue \
"Continuing\\..*stat 3:.*ENOENT$stop_msg" \
"Stat an empty pathname returns ENOENT"

gdb_test continue \
"Continuing\\..*stat 4:.*ENOENT$stop_msg" \
"Stat a nonexistant file returns ENOENT"

gdb_test continue \
"Continuing\\..*fstat 1:.*OK$stop_msg" \
"Fstat an open file"

gdb_test continue \
"Continuing\\..*fstat 2:.*EBADF$stop_msg" \
"Fstat an invalid file descriptor returns EBADF"

gdb_test continue \
"Continuing\\..*isatty 1:.*OK$stop_msg" \
"Isatty (stdin)"

gdb_test continue \
"Continuing\\..*isatty 2:.*OK$stop_msg" \
"Isatty (stdout)"

gdb_test continue \
"Continuing\\..*isatty 3:.*OK$stop_msg" \
"Isatty (stderr)"

gdb_test continue \
"Continuing\\..*isatty 4:.*OK$stop_msg" \
"Isatty (invalid fd)"

gdb_test continue \
"Continuing\\..*isatty 5:.*OK$stop_msg" \
"Isatty (open file)"

gdb_test_no_output "set debug remote 1"
set msg "System says shell is not available"
gdb_test_multiple "continue" $msg {
    -re "Continuing\\..*Fsystem.*system 1:.*OK$stop_msg\r\n$gdb_prompt $" {
	pass $msg
    }
    -re ".*Fsystem.*$gdb_prompt $" {
	fail $msg
    }
    -re "$gdb_prompt $" {
	unsupported $msg
    }
}
gdb_test_no_output "set debug remote 0"

gdb_test_no_output "set remote system-call-allowed 1"

gdb_test continue \
"Continuing\\..*system 2:.*OK$stop_msg" \
"System says shell is available"

gdb_test continue \
"Continuing\\..*system 3:.*OK$stop_msg" \
"System(3) call"

# Is this ok?  POSIX says system returns a waitpid status?
gdb_test continue \
"Continuing\\..*system 4:.*OK$stop_msg" \
"System with invalid command returns 127"

# Prepare the directory for rename tests in case that test_system
# failed to create.
set dir1 [file join $outdir "dir1.fileio.test" "subdir.fileio.test"]
remote_exec host "mkdir -p $dir1"
set dir1 [file join $outdir "dir2.fileio.test"]
remote_exec host "mkdir $dir1"

gdb_test continue \
"Continuing\\..*rename 1:.*OK$stop_msg" \
"Rename a file"

gdb_test continue \
"Continuing\\..*rename 2:.*EISDIR$stop_msg" \
"Renaming a file to existing directory returns EISDIR"

set test "renaming a directory to a non-empty directory returns ENOTEMPTY or EEXIST"
gdb_test_multiple continue "${test}" {
    -re "Continuing\\..*rename 3:.*(ENOTEMPTY|EEXIST)$stop_msg$gdb_prompt $" {
	pass "${test}"
    }
    -re "Continuing\\..*rename 3:.*EBUSY$stop_msg$gdb_prompt $" {
	# At least version <= 2.6/2004-01-08 of the Linux Kernel gets
	# this wrong (reporting EBUSY) when the file system is NFS
	# mounted.
	setup_xfail *-*-*linux* gdb/1502
	fail "${test}"
    }
}

gdb_test continue \
"Continuing\\..*rename 4:.*EINVAL$stop_msg" \
"Renaming a directory to a subdir of itself returns EINVAL"

gdb_test continue \
"Continuing\\..*rename 5:.*ENOENT$stop_msg" \
"Renaming a nonexistant file returns ENOENT"

gdb_test continue \
"Continuing\\..*unlink 1:.*OK$stop_msg" \
"Unlink a file"

# This test fails on Cygwin because unlink() succeeds on Win32 systems
# in that situation.
if [ishost *cygwin*] {
    setup_xfail "*-*-*"
}
gdb_test continue \
"Continuing\\..*unlink 2:.*EACCES$stop_msg" \
"Unlinking a file in a directory w/o write access returns EACCES"

gdb_test continue \
"Continuing\\..*unlink 3:.*ENOENT$stop_msg" \
"Unlinking a nonexistant file returns ENOENT"

gdb_test continue \
"Continuing\\..*time 1:.*OK$stop_msg" \
"Time(2) call returns the same value as in parameter"

sleep 2
gdb_test continue \
"Continuing\\..*time 2:.*OK$stop_msg" \
"Time(2) returns feasible values"

gdb_exit

# Make dir2 writable again so rm -rf of a build tree Just Works.
if {[file exists $dir2] && ![file writable $dir2]} {
    system "chmod +w $dir2"
}

set timeout $oldtimeout
return 0