| 1 | ## oils_failures_allowed: 1
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| 2 | ## compare_shells: bash dash mksh
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| 3 |
|
| 4 | #### >& and <& are the same
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| 5 |
|
| 6 | echo one 1>&2
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| 7 |
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| 8 | echo two 1<&2
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| 9 |
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| 10 | ## STDERR:
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| 11 | one
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| 12 | two
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| 13 | ## END
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| 14 |
|
| 15 |
|
| 16 | #### <&
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| 17 | # Is there a simpler test case for this?
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| 18 | echo foo > $TMP/lessamp.txt
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| 19 |
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| 20 | exec 6< $TMP/lessamp.txt
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| 21 | read line <&6
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| 22 |
|
| 23 | echo "[$line]"
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| 24 | ## stdout: [foo]
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| 25 |
|
| 26 | #### 2>&1 with no command
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| 27 | ( exit 42 ) # status is reset after this
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| 28 | echo status=$?
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| 29 | 2>&1
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| 30 | echo status=$?
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| 31 | ## STDOUT:
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| 32 | status=42
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| 33 | status=0
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| 34 | ## END
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| 35 | ## stderr-json: ""
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| 36 |
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| 37 |
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| 38 | #### 2&>1 (is it a redirect or is it like a&>1)
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| 39 | 2&>1
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| 40 | echo status=$?
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| 41 | ## STDOUT:
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| 42 | status=127
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| 43 | ## END
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| 44 | ## OK mksh/dash STDOUT:
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| 45 | status=0
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| 46 | ## END
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| 47 |
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| 48 |
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| 49 | #### Nonexistent file
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| 50 | cat <$TMP/nonexistent.txt
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| 51 | echo status=$?
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| 52 | ## stdout: status=1
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| 53 | ## OK dash stdout: status=2
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| 54 |
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| 55 | #### Descriptor redirect with spaces
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| 56 | # Hm this seems like a failure of lookahead! The second thing should look to a
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| 57 | # file-like thing.
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| 58 | # I think this is a posix issue.
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| 59 | # tag: posix-issue
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| 60 | echo one 1>&2
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| 61 | echo two 1 >&2
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| 62 | echo three 1>& 2
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| 63 | ## stderr-json: "one\ntwo 1\nthree\n"
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| 64 |
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| 65 | #### Filename redirect with spaces
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| 66 | # This time 1 *is* a descriptor, not a word. If you add a space between 1 and
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| 67 | # >, it doesn't work.
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| 68 | echo two 1> $TMP/file-redir1.txt
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| 69 | cat $TMP/file-redir1.txt
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| 70 | ## stdout: two
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| 71 |
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| 72 | #### Quoted filename redirect with spaces
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| 73 | # POSIX makes node of this
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| 74 | echo two \1 > $TMP/file-redir2.txt
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| 75 | cat $TMP/file-redir2.txt
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| 76 | ## stdout: two 1
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| 77 |
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| 78 | #### Descriptor redirect with filename
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| 79 | # bash/mksh treat this like a filename, not a descriptor.
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| 80 | # dash aborts.
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| 81 | echo one 1>&$TMP/nonexistent-filename__
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| 82 | echo "status=$?"
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| 83 | ## stdout: status=1
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| 84 | ## BUG bash stdout: status=0
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| 85 | ## OK dash stdout-json: ""
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| 86 | ## OK dash status: 2
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| 87 |
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| 88 | #### Redirect echo to stderr, and then redirect all of stdout somewhere.
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| 89 | { echo foo 1>&2; echo 012345789; } > $TMP/block-stdout.txt
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| 90 | cat $TMP/block-stdout.txt | wc -c
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| 91 | ## stderr: foo
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| 92 | ## stdout: 10
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| 93 |
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| 94 | #### Named file descriptor
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| 95 | exec {myfd}> $TMP/named-fd.txt
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| 96 | echo named-fd-contents >& $myfd
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| 97 | cat $TMP/named-fd.txt
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| 98 | ## stdout: named-fd-contents
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| 99 | ## status: 0
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| 100 | ## N-I dash/mksh stdout-json: ""
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| 101 | ## N-I dash/mksh status: 127
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| 102 |
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| 103 | #### Double digit fd (20> file)
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| 104 | exec 20> "$TMP/double-digit-fd.txt"
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| 105 | echo hello20 >&20
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| 106 | cat "$TMP/double-digit-fd.txt"
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| 107 | ## stdout: hello20
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| 108 | ## BUG dash stdout-json: ""
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| 109 | ## BUG dash status: 127
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| 110 |
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| 111 | #### : 9> fdleak (OSH regression)
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| 112 | true 9> "$TMP/fd.txt"
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| 113 | ( echo world >&9 )
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| 114 | cat "$TMP/fd.txt"
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| 115 | ## stdout-json: ""
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| 116 |
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| 117 | #### : 3>&3 (OSH regression)
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| 118 |
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| 119 | # mksh started being flaky on the continuous build and during release. We
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| 120 | # don't care! Related to issue #330.
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| 121 | case $SH in (mksh) exit ;; esac
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| 122 |
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| 123 | : 3>&3
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| 124 | echo hello
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| 125 | ## stdout: hello
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| 126 | ## BUG mksh stdout-json: ""
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| 127 | ## BUG mksh status: 0
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| 128 |
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| 129 | #### : 3>&3-
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| 130 | : 3>&3-
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| 131 | echo hello
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| 132 | ## stdout: hello
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| 133 | ## N-I dash/mksh stdout-json: ""
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| 134 | ## N-I mksh status: 1
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| 135 | ## N-I dash status: 2
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| 136 |
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| 137 | #### 3>&- << EOF (OSH regression: fail to restore fds)
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| 138 | exec 3> "$TMP/fd.txt"
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| 139 | echo hello 3>&- << EOF
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| 140 | EOF
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| 141 | echo world >&3
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| 142 | exec 3>&- # close
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| 143 | cat "$TMP/fd.txt"
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| 144 | ## STDOUT:
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| 145 | hello
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| 146 | world
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| 147 | ## END
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| 148 |
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| 149 | #### Open file on descriptor 3 and write to it many times
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| 150 |
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| 151 | # different than case below because 3 is the likely first FD of open()
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| 152 |
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| 153 | exec 3> "$TMP/fd3.txt"
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| 154 | echo hello >&3
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| 155 | echo world >&3
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| 156 | exec 3>&- # close
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| 157 | cat "$TMP/fd3.txt"
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| 158 | ## STDOUT:
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| 159 | hello
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| 160 | world
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| 161 | ## END
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| 162 |
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| 163 | #### Open file on descriptor 4 and write to it many times
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| 164 |
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| 165 | # different than the case above because because 4 isn't the likely first FD
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| 166 |
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| 167 | exec 4> "$TMP/fd4.txt"
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| 168 | echo hello >&4
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| 169 | echo world >&4
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| 170 | exec 4>&- # close
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| 171 | cat "$TMP/fd4.txt"
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| 172 | ## STDOUT:
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| 173 | hello
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| 174 | world
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| 175 | ## END
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| 176 |
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| 177 | #### Redirect to empty string
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| 178 | f=''
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| 179 | echo s > "$f"
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| 180 | echo "result=$?"
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| 181 | set -o errexit
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| 182 | echo s > "$f"
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| 183 | echo DONE
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| 184 | ## stdout: result=1
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| 185 | ## status: 1
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| 186 | ## OK dash stdout: result=2
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| 187 | ## OK dash status: 2
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| 188 |
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| 189 | #### Redirect to file descriptor that's not open
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| 190 | # Notes:
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| 191 | # - 7/2021: descriptor 7 seems to work on all CI systems. The process state
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| 192 | # isn't clean, but we could probably close it in OSH?
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| 193 | # - dash doesn't allow file descriptors greater than 9. (This is a good
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| 194 | # thing, because the bash chapter in AOSA book mentions that juggling user
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| 195 | # vs. system file descriptors is a huge pain.)
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| 196 | # - But somehow running in parallel under spec-runner.sh changes whether
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| 197 | # descriptor 3 is open. e.g. 'echo hi 1>&3'. Possibly because of
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| 198 | # /usr/bin/time. The _tmp/spec/*.task.txt file gets corrupted!
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| 199 | # - Oh this is because I use time --output-file. That opens descriptor 3. And
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| 200 | # then time forks the shell script. The file descriptor table is inherited.
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| 201 | # - You actually have to set the file descriptor to something. What do
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| 202 | # configure and debootstrap too?
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| 203 |
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| 204 | opened=$(ls /proc/$$/fd)
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| 205 | if echo "$opened" | egrep '^7$'; then
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| 206 | echo "FD 7 shouldn't be open"
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| 207 | echo "OPENED:"
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| 208 | echo "$opened"
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| 209 | fi
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| 210 |
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| 211 | echo hi 1>&7
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| 212 | ## stdout-json: ""
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| 213 | ## status: 1
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| 214 | ## OK dash status: 2
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| 215 |
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| 216 | #### Open descriptor with exec
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| 217 | # What is the point of this? ./configure scripts and debootstrap use it.
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| 218 | exec 3>&1
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| 219 | echo hi 1>&3
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| 220 | ## stdout: hi
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| 221 | ## status: 0
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| 222 |
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| 223 | #### Open multiple descriptors with exec
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| 224 | # What is the point of this? ./configure scripts and debootstrap use it.
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| 225 | exec 3>&1
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| 226 | exec 4>&1
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| 227 | echo three 1>&3
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| 228 | echo four 1>&4
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| 229 | ## stdout-json: "three\nfour\n"
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| 230 | ## status: 0
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| 231 |
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| 232 | #### >| to clobber
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| 233 | echo XX >| $TMP/c.txt
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| 234 |
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| 235 | set -o noclobber
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| 236 |
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| 237 | echo YY > $TMP/c.txt # not clobber
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| 238 | echo status=$?
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| 239 |
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| 240 | cat $TMP/c.txt
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| 241 | echo ZZ >| $TMP/c.txt
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| 242 |
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| 243 | cat $TMP/c.txt
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| 244 | ## STDOUT:
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| 245 | status=1
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| 246 | XX
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| 247 | ZZ
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| 248 | ## END
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| 249 | ## OK dash STDOUT:
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| 250 | status=2
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| 251 | XX
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| 252 | ZZ
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| 253 | ## END
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| 254 |
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| 255 | #### &> redirects stdout and stderr
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| 256 | tmp="$(basename $SH)-$$.txt" # unique name for shell and test case
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| 257 | #echo $tmp
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| 258 |
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| 259 | stdout_stderr.py &> $tmp
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| 260 |
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| 261 | # order is indeterminate
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| 262 | grep STDOUT $tmp
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| 263 | grep STDERR $tmp
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| 264 |
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| 265 | ## STDOUT:
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| 266 | STDOUT
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| 267 | STDERR
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| 268 | ## END
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| 269 | ## N-I dash stdout: STDOUT
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| 270 | ## N-I dash stderr: STDERR
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| 271 | ## N-I dash status: 1
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| 272 |
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| 273 | #### >&word redirects stdout and stderr when word is not a number or -
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| 274 |
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| 275 | # dash, mksh don't implement this bash behaviour.
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| 276 | case $SH in (dash|mksh) exit 1 ;; esac
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| 277 |
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| 278 | tmp="$(basename $SH)-$$.txt" # unique name for shell and test case
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| 279 |
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| 280 | stdout_stderr.py >&$tmp
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| 281 |
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| 282 | # order is indeterminate
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| 283 | grep STDOUT $tmp
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| 284 | grep STDERR $tmp
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| 285 |
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| 286 | ## STDOUT:
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| 287 | STDOUT
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| 288 | STDERR
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| 289 | ## END
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| 290 | ## N-I dash/mksh status: 1
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| 291 | ## N-I dash/mksh stdout-json: ""
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| 292 |
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| 293 | #### 1>&- to close file descriptor
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| 294 | exec 5> "$TMP/f.txt"
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| 295 | echo hello >&5
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| 296 | exec 5>&-
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| 297 | echo world >&5
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| 298 | cat "$TMP/f.txt"
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| 299 | ## stdout-json: "hello\n"
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| 300 |
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| 301 | #### 1>&2- to move file descriptor
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| 302 | exec 5> "$TMP/f.txt"
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| 303 | echo hello5 >&5
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| 304 | exec 6>&5-
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| 305 | echo world5 >&5
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| 306 | echo world6 >&6
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| 307 | exec 6>&-
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| 308 | cat "$TMP/f.txt"
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| 309 | ## stdout-json: "hello5\nworld6\n"
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| 310 | ## N-I dash status: 2
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| 311 | ## N-I dash stdout-json: ""
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| 312 | ## N-I mksh status: 1
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| 313 | ## N-I mksh stdout-json: ""
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| 314 |
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| 315 | #### 1>&2- (Bash bug: fail to restore closed fd)
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| 316 |
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| 317 | # 7/2021: descriptor 8 is open on Github Actions, so use descriptor 6 instead
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| 318 |
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| 319 | # Fix for CI systems where process state isn't clean: Close descriptors 6 and 7.
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| 320 | exec 6>&- 7>&-
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| 321 |
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| 322 | opened=$(ls /proc/$$/fd)
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| 323 | if echo "$opened" | egrep '^7$'; then
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| 324 | echo "FD 7 shouldn't be open"
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| 325 | echo "OPENED:"
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| 326 | echo "$opened"
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| 327 | fi
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| 328 | if echo "$opened" | egrep '^6$'; then
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| 329 | echo "FD 6 shouldn't be open"
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| 330 | echo "OPENED:"
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| 331 | echo "$opened"
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| 332 | fi
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| 333 |
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| 334 | exec 7> "$TMP/f.txt"
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| 335 | : 6>&7 7>&-
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| 336 | echo hello >&7
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| 337 | : 6>&7-
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| 338 | echo world >&7
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| 339 | exec 7>&-
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| 340 | cat "$TMP/f.txt"
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| 341 |
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| 342 | ## status: 1
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| 343 | ## stdout-json: ""
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| 344 |
|
| 345 | ## OK dash status: 2
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| 346 |
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| 347 | ## BUG bash status: 0
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| 348 | ## BUG bash stdout: hello
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| 349 |
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| 350 | #### <> for read/write
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| 351 | echo first >$TMP/rw.txt
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| 352 | exec 8<>$TMP/rw.txt
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| 353 | read line <&8
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| 354 | echo line=$line
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| 355 | echo second 1>&8
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| 356 | echo CONTENTS
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| 357 | cat $TMP/rw.txt
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| 358 | ## stdout-json: "line=first\nCONTENTS\nfirst\nsecond\n"
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| 359 |
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| 360 | #### <> for read/write named pipes
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| 361 | rm -f "$TMP/f.pipe"
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| 362 | mkfifo "$TMP/f.pipe"
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| 363 | exec 8<> "$TMP/f.pipe"
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| 364 | echo first >&8
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| 365 | echo second >&8
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| 366 | read line1 <&8
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| 367 | read line2 <&8
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| 368 | exec 8<&-
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| 369 | echo line1=$line1 line2=$line2
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| 370 | ## stdout: line1=first line2=second
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| 371 |
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| 372 | #### &>> appends stdout and stderr
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| 373 |
|
| 374 | # Fix for flaky tests: dash behaves non-deterministically under load! It
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| 375 | # doesn't implement the behavior anyway so I don't care why.
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| 376 | case $SH in
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| 377 | *dash)
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| 378 | exit 1
|
| 379 | ;;
|
| 380 | esac
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| 381 |
|
| 382 | echo "ok" > $TMP/f.txt
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| 383 | stdout_stderr.py &>> $TMP/f.txt
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| 384 | grep ok $TMP/f.txt >/dev/null && echo 'ok'
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| 385 | grep STDOUT $TMP/f.txt >/dev/null && echo 'ok'
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| 386 | grep STDERR $TMP/f.txt >/dev/null && echo 'ok'
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| 387 | ## STDOUT:
|
| 388 | ok
|
| 389 | ok
|
| 390 | ok
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| 391 | ## END
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| 392 | ## N-I dash stdout-json: ""
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| 393 | ## N-I dash status: 1
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| 394 |
|
| 395 | #### exec redirect then various builtins
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| 396 | exec 5>$TMP/log.txt
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| 397 | echo hi >&5
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| 398 | set -o >&5
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| 399 | echo done
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| 400 | ## STDOUT:
|
| 401 | done
|
| 402 | ## END
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| 403 |
|
| 404 | #### can't mention big file descriptor
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| 405 | echo hi 9>&1
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| 406 | # trivia: 23 is the max descriptor for mksh
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| 407 | #echo hi 24>&1
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| 408 | echo hi 99>&1
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| 409 | echo hi 100>&1
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| 410 | ## OK osh STDOUT:
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| 411 | hi
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| 412 | hi
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| 413 | hi 100
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| 414 | ## END
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| 415 | ## STDOUT:
|
| 416 | hi
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| 417 | hi 99
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| 418 | hi 100
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| 419 | ## END
|
| 420 | ## BUG bash STDOUT:
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| 421 | hi
|
| 422 | hi
|
| 423 | hi
|
| 424 | ## END
|
| 425 |
|
| 426 | #### : >/dev/null 2> / (OSH regression: fail to pop fd frame)
|
| 427 | # oil 0.8.pre4 fails to restore fds after redirection failure. In the
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| 428 | # following case, the fd frame remains after the redirection failure
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| 429 | # "2> /" so that the effect of redirection ">/dev/null" remains after
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| 430 | # the completion of the command.
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| 431 | : >/dev/null 2> /
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| 432 | echo hello
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| 433 | ## stdout: hello
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| 434 | ## OK dash stdout-json: ""
|
| 435 | ## OK dash status: 2
|
| 436 | ## OK mksh stdout-json: ""
|
| 437 | ## OK mksh status: 1
|
| 438 | # dash/mksh terminates the execution of script on the redirection.
|
| 439 |
|
| 440 | #### echo foo >&100 (OSH regression: does not fail with invalid fd 100)
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| 441 | # oil 0.8.pre4 does not fail with non-existent fd 100.
|
| 442 | fd=100
|
| 443 | echo foo >&$fd
|
| 444 | ## stdout-json: ""
|
| 445 | ## status: 1
|
| 446 | ## OK dash status: 2
|
| 447 |
|
| 448 | #### echo foo >&N where N is first unused fd
|
| 449 | # 1. prepare default fd for internal uses
|
| 450 | minfd=10
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| 451 | case ${SH##*/} in
|
| 452 | (mksh) minfd=24 ;;
|
| 453 | (osh) minfd=100 ;;
|
| 454 | esac
|
| 455 |
|
| 456 | # 2. prepare first unused fd
|
| 457 | fd=$minfd
|
| 458 | is-fd-open() { : >&$1; }
|
| 459 | while is-fd-open "$fd"; do
|
| 460 | : $((fd+=1))
|
| 461 |
|
| 462 | # prevent infinite loop for broken oils-for-unix
|
| 463 | if test $fd -gt 1000; then
|
| 464 | break
|
| 465 | fi
|
| 466 | done
|
| 467 |
|
| 468 | # 3. test
|
| 469 | echo foo >&$fd
|
| 470 | ## stdout-json: ""
|
| 471 | ## status: 1
|
| 472 | ## OK dash status: 2
|
| 473 |
|
| 474 | #### exec {fd}>&- (OSH regression: fails to close fd)
|
| 475 | # mksh, dash do not implement {fd} redirections.
|
| 476 | case $SH in (mksh|dash) exit 1 ;; esac
|
| 477 | # oil 0.8.pre4 fails to close fd by {fd}&-.
|
| 478 | exec {fd}>file1
|
| 479 | echo foo >&$fd
|
| 480 | exec {fd}>&-
|
| 481 | echo bar >&$fd
|
| 482 | cat file1
|
| 483 | ## stdout: foo
|
| 484 | ## N-I mksh/dash stdout-json: ""
|
| 485 | ## N-I mksh/dash status: 1
|