648db22b |
1 | # source this file; set up for tests |
2 | |
3 | # Copyright (C) 2009-2016 Free Software Foundation, Inc. |
4 | |
5 | # This program is free software: you can redistribute it and/or modify |
6 | # it under the terms of the GNU General Public License as published by |
7 | # the Free Software Foundation, either version 3 of the License, or |
8 | # (at your option) any later version. |
9 | |
10 | # This program is distributed in the hope that it will be useful, |
11 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | # GNU General Public License for more details. |
14 | |
15 | # You should have received a copy of the GNU General Public License |
16 | # along with this program. If not, see <https://www.gnu.org/licenses/>. |
17 | |
18 | # Using this file in a test |
19 | # ========================= |
20 | # |
21 | # The typical skeleton of a test looks like this: |
22 | # |
23 | # #!/bin/sh |
24 | # . "${srcdir=.}/init.sh"; path_prepend_ . |
25 | # Execute some commands. |
26 | # Note that these commands are executed in a subdirectory, therefore you |
27 | # need to prepend "../" to relative filenames in the build directory. |
28 | # Note that the "path_prepend_ ." is useful only if the body of your |
29 | # test invokes programs residing in the initial directory. |
30 | # For example, if the programs you want to test are in src/, and this test |
31 | # script is named tests/test-1, then you would use "path_prepend_ ../src", |
32 | # or perhaps export PATH='$(abs_top_builddir)/src$(PATH_SEPARATOR)'"$$PATH" |
33 | # to all tests via automake's TESTS_ENVIRONMENT. |
34 | # Set the exit code 0 for success, 77 for skipped, or 1 or other for failure. |
35 | # Use the skip_ and fail_ functions to print a diagnostic and then exit |
36 | # with the corresponding exit code. |
37 | # Exit $? |
38 | |
39 | # Executing a test that uses this file |
40 | # ==================================== |
41 | # |
42 | # Running a single test: |
43 | # $ make check TESTS=test-foo.sh |
44 | # |
45 | # Running a single test, with verbose output: |
46 | # $ make check TESTS=test-foo.sh VERBOSE=yes |
47 | # |
48 | # Running a single test, with single-stepping: |
49 | # 1. Go into a sub-shell: |
50 | # $ bash |
51 | # 2. Set relevant environment variables from TESTS_ENVIRONMENT in the |
52 | # Makefile: |
53 | # $ export srcdir=../../tests # this is an example |
54 | # 3. Execute the commands from the test, copy&pasting them one by one: |
55 | # $ . "$srcdir/init.sh"; path_prepend_ . |
56 | # ... |
57 | # 4. Finally |
58 | # $ exit |
59 | |
60 | ME_=`expr "./$0" : '.*/\(.*\)$'` |
61 | |
62 | # We use a trap below for cleanup. This requires us to go through |
63 | # hoops to get the right exit status transported through the handler. |
64 | # So use 'Exit STATUS' instead of 'exit STATUS' inside of the tests. |
65 | # Turn off errexit here so that we don't trip the bug with OSF1/Tru64 |
66 | # sh inside this function. |
67 | Exit () { set +e; (exit $1); exit $1; } |
68 | |
69 | # Print warnings (e.g., about skipped and failed tests) to this file number. |
70 | # Override by defining to say, 9, in init.cfg, and putting say, |
71 | # export ...ENVVAR_SETTINGS...; $(SHELL) 9>&2 |
72 | # in the definition of TESTS_ENVIRONMENT in your tests/Makefile.am file. |
73 | # This is useful when using automake's parallel tests mode, to print |
74 | # the reason for skip/failure to console, rather than to the .log files. |
75 | : ${stderr_fileno_=2} |
76 | |
77 | # Note that correct expansion of "$*" depends on IFS starting with ' '. |
78 | # Always write the full diagnostic to stderr. |
79 | # When stderr_fileno_ is not 2, also emit the first line of the |
80 | # diagnostic to that file descriptor. |
81 | warn_ () |
82 | { |
83 | # If IFS does not start with ' ', set it and emit the warning in a subshell. |
84 | case $IFS in |
85 | ' '*) printf '%s\n' "$*" >&2 |
86 | test $stderr_fileno_ = 2 \ |
87 | || { printf '%s\n' "$*" | sed 1q >&$stderr_fileno_ ; } ;; |
88 | *) (IFS=' '; warn_ "$@");; |
89 | esac |
90 | } |
91 | fail_ () { warn_ "$ME_: failed test: $@"; Exit 1; } |
92 | skip_ () { warn_ "$ME_: skipped test: $@"; Exit 77; } |
93 | fatal_ () { warn_ "$ME_: hard error: $@"; Exit 99; } |
94 | framework_failure_ () { warn_ "$ME_: set-up failure: $@"; Exit 99; } |
95 | |
96 | # This is used to simplify checking of the return value |
97 | # which is useful when ensuring a command fails as desired. |
98 | # I.e., just doing `command ... &&fail=1` will not catch |
99 | # a segfault in command for example. With this helper you |
100 | # instead check an explicit exit code like |
101 | # returns_ 1 command ... || fail |
102 | returns_ () { |
103 | # Disable tracing so it doesn't interfere with stderr of the wrapped command |
104 | { set +x; } 2>/dev/null |
105 | |
106 | local exp_exit="$1" |
107 | shift |
108 | "$@" |
109 | test $? -eq $exp_exit && ret_=0 || ret_=1 |
110 | |
111 | if test "$VERBOSE" = yes && test "$gl_set_x_corrupts_stderr_" = false; then |
112 | set -x |
113 | fi |
114 | { return $ret_; } 2>/dev/null |
115 | } |
116 | |
117 | # Sanitize this shell to POSIX mode, if possible. |
118 | DUALCASE=1; export DUALCASE |
119 | if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then |
120 | emulate sh |
121 | NULLCMD=: |
122 | alias -g '${1+"$@"}'='"$@"' |
123 | setopt NO_GLOB_SUBST |
124 | else |
125 | case `(set -o) 2>/dev/null` in |
126 | *posix*) set -o posix ;; |
127 | esac |
128 | fi |
129 | |
130 | # We require $(...) support unconditionally. |
131 | # We require a few additional shell features only when $EXEEXT is nonempty, |
132 | # in order to support automatic $EXEEXT emulation: |
133 | # - hyphen-containing alias names |
134 | # - we prefer to use ${var#...} substitution, rather than having |
135 | # to work around lack of support for that feature. |
136 | # The following code attempts to find a shell with support for these features. |
137 | # If the current shell passes the test, we're done. Otherwise, test other |
138 | # shells until we find one that passes. If one is found, re-exec it. |
139 | # If no acceptable shell is found, skip the current test. |
140 | # |
141 | # The "...set -x; P=1 true 2>err..." test is to disqualify any shell that |
142 | # emits "P=1" into err, as /bin/sh from SunOS 5.11 and OpenBSD 4.7 do. |
143 | # |
144 | # Use "9" to indicate success (rather than 0), in case some shell acts |
145 | # like Solaris 10's /bin/sh but exits successfully instead of with status 2. |
146 | |
147 | # Eval this code in a subshell to determine a shell's suitability. |
148 | # 10 - passes all tests; ok to use |
149 | # 9 - ok, but enabling "set -x" corrupts app stderr; prefer higher score |
150 | # ? - not ok |
151 | gl_shell_test_script_=' |
152 | test $(echo y) = y || exit 1 |
153 | f_local_() { local v=1; }; f_local_ || exit 1 |
154 | score_=10 |
155 | if test "$VERBOSE" = yes; then |
156 | test -n "$( (exec 3>&1; set -x; P=1 true 2>&3) 2> /dev/null)" && score_=9 |
157 | fi |
158 | test -z "$EXEEXT" && exit $score_ |
159 | shopt -s expand_aliases |
160 | alias a-b="echo zoo" |
161 | v=abx |
162 | test ${v%x} = ab \ |
163 | && test ${v#a} = bx \ |
164 | && test $(a-b) = zoo \ |
165 | && exit $score_ |
166 | ' |
167 | |
168 | if test "x$1" = "x--no-reexec"; then |
169 | shift |
170 | else |
171 | # Assume a working shell. Export to subshells (setup_ needs this). |
172 | gl_set_x_corrupts_stderr_=false |
173 | export gl_set_x_corrupts_stderr_ |
174 | |
175 | # Record the first marginally acceptable shell. |
176 | marginal_= |
177 | |
178 | # Search for a shell that meets our requirements. |
179 | for re_shell_ in __current__ "${CONFIG_SHELL:-no_shell}" \ |
180 | /bin/sh bash dash zsh pdksh fail |
181 | do |
182 | test "$re_shell_" = no_shell && continue |
183 | |
184 | # If we've made it all the way to the sentinel, "fail" without |
185 | # finding even a marginal shell, skip this test. |
186 | if test "$re_shell_" = fail; then |
187 | test -z "$marginal_" && skip_ failed to find an adequate shell |
188 | re_shell_=$marginal_ |
189 | break |
190 | fi |
191 | |
192 | # When testing the current shell, simply "eval" the test code. |
193 | # Otherwise, run it via $re_shell_ -c ... |
194 | if test "$re_shell_" = __current__; then |
195 | # 'eval'ing this code makes Solaris 10's /bin/sh exit with |
196 | # $? set to 2. It does not evaluate any of the code after the |
197 | # "unexpected" first '('. Thus, we must run it in a subshell. |
198 | ( eval "$gl_shell_test_script_" ) > /dev/null 2>&1 |
199 | else |
200 | "$re_shell_" -c "$gl_shell_test_script_" 2>/dev/null |
201 | fi |
202 | |
203 | st_=$? |
204 | |
205 | # $re_shell_ works just fine. Use it. |
206 | if test $st_ = 10; then |
207 | gl_set_x_corrupts_stderr_=false |
208 | break |
209 | fi |
210 | |
211 | # If this is our first marginally acceptable shell, remember it. |
212 | if test "$st_:$marginal_" = 9: ; then |
213 | marginal_="$re_shell_" |
214 | gl_set_x_corrupts_stderr_=true |
215 | fi |
216 | done |
217 | |
218 | if test "$re_shell_" != __current__; then |
219 | # Found a usable shell. Preserve -v and -x. |
220 | case $- in |
221 | *v*x* | *x*v*) opts_=-vx ;; |
222 | *v*) opts_=-v ;; |
223 | *x*) opts_=-x ;; |
224 | *) opts_= ;; |
225 | esac |
226 | re_shell=$re_shell_ |
227 | export re_shell |
228 | exec "$re_shell_" $opts_ "$0" --no-reexec "$@" |
229 | echo "$ME_: exec failed" 1>&2 |
230 | exit 127 |
231 | fi |
232 | fi |
233 | |
234 | # If this is bash, turn off all aliases. |
235 | test -n "$BASH_VERSION" && unalias -a |
236 | |
237 | # Note that when supporting $EXEEXT (transparently mapping from PROG_NAME to |
238 | # PROG_NAME.exe), we want to support hyphen-containing names like test-acos. |
239 | # That is part of the shell-selection test above. Why use aliases rather |
240 | # than functions? Because support for hyphen-containing aliases is more |
241 | # widespread than that for hyphen-containing function names. |
242 | test -n "$EXEEXT" && shopt -s expand_aliases |
243 | |
244 | # Enable glibc's malloc-perturbing option. |
245 | # This is useful for exposing code that depends on the fact that |
246 | # malloc-related functions often return memory that is mostly zeroed. |
247 | # If you have the time and cycles, use valgrind to do an even better job. |
248 | : ${MALLOC_PERTURB_=87} |
249 | export MALLOC_PERTURB_ |
250 | |
251 | # This is a stub function that is run upon trap (upon regular exit and |
252 | # interrupt). Override it with a per-test function, e.g., to unmount |
253 | # a partition, or to undo any other global state changes. |
254 | cleanup_ () { :; } |
255 | |
256 | # Emit a header similar to that from diff -u; Print the simulated "diff" |
257 | # command so that the order of arguments is clear. Don't bother with @@ lines. |
258 | emit_diff_u_header_ () |
259 | { |
260 | printf '%s\n' "diff -u $*" \ |
261 | "--- $1 1970-01-01" \ |
262 | "+++ $2 1970-01-01" |
263 | } |
264 | |
265 | # Arrange not to let diff or cmp operate on /dev/null, |
266 | # since on some systems (at least OSF/1 5.1), that doesn't work. |
267 | # When there are not two arguments, or no argument is /dev/null, return 2. |
268 | # When one argument is /dev/null and the other is not empty, |
269 | # cat the nonempty file to stderr and return 1. |
270 | # Otherwise, return 0. |
271 | compare_dev_null_ () |
272 | { |
273 | test $# = 2 || return 2 |
274 | |
275 | if test "x$1" = x/dev/null; then |
276 | test -s "$2" || return 0 |
277 | emit_diff_u_header_ "$@"; sed 's/^/+/' "$2" |
278 | return 1 |
279 | fi |
280 | |
281 | if test "x$2" = x/dev/null; then |
282 | test -s "$1" || return 0 |
283 | emit_diff_u_header_ "$@"; sed 's/^/-/' "$1" |
284 | return 1 |
285 | fi |
286 | |
287 | return 2 |
288 | } |
289 | |
290 | if diff_out_=`exec 2>/dev/null; diff -u "$0" "$0" < /dev/null` \ |
291 | && diff -u Makefile "$0" 2>/dev/null | grep '^[+]#!' >/dev/null; then |
292 | # diff accepts the -u option and does not (like AIX 7 'diff') produce an |
293 | # extra space on column 1 of every content line. |
294 | if test -z "$diff_out_"; then |
295 | compare_ () { diff -u "$@"; } |
296 | else |
297 | compare_ () |
298 | { |
299 | if diff -u "$@" > diff.out; then |
300 | # No differences were found, but Solaris 'diff' produces output |
301 | # "No differences encountered". Hide this output. |
302 | rm -f diff.out |
303 | true |
304 | else |
305 | cat diff.out |
306 | rm -f diff.out |
307 | false |
308 | fi |
309 | } |
310 | fi |
311 | elif |
312 | for diff_opt_ in -U3 -c '' no; do |
313 | test "$diff_opt_" = no && break |
314 | diff_out_=`exec 2>/dev/null; diff $diff_opt_ "$0" "$0" </dev/null` && break |
315 | done |
316 | test "$diff_opt_" != no |
317 | then |
318 | if test -z "$diff_out_"; then |
319 | compare_ () { diff $diff_opt_ "$@"; } |
320 | else |
321 | compare_ () |
322 | { |
323 | if diff $diff_opt_ "$@" > diff.out; then |
324 | # No differences were found, but AIX and HP-UX 'diff' produce output |
325 | # "No differences encountered" or "There are no differences between the |
326 | # files.". Hide this output. |
327 | rm -f diff.out |
328 | true |
329 | else |
330 | cat diff.out |
331 | rm -f diff.out |
332 | false |
333 | fi |
334 | } |
335 | fi |
336 | elif cmp -s /dev/null /dev/null 2>/dev/null; then |
337 | compare_ () { cmp -s "$@"; } |
338 | else |
339 | compare_ () { cmp "$@"; } |
340 | fi |
341 | |
342 | # Usage: compare EXPECTED ACTUAL |
343 | # |
344 | # Given compare_dev_null_'s preprocessing, defer to compare_ if 2 or more. |
345 | # Otherwise, propagate $? to caller: any diffs have already been printed. |
346 | compare () |
347 | { |
348 | # This looks like it can be factored to use a simple "case $?" |
349 | # after unchecked compare_dev_null_ invocation, but that would |
350 | # fail in a "set -e" environment. |
351 | if compare_dev_null_ "$@"; then |
352 | return 0 |
353 | else |
354 | case $? in |
355 | 1) return 1;; |
356 | *) compare_ "$@";; |
357 | esac |
358 | fi |
359 | } |
360 | |
361 | # An arbitrary prefix to help distinguish test directories. |
362 | testdir_prefix_ () { printf gt; } |
363 | |
364 | # Run the user-overridable cleanup_ function, remove the temporary |
365 | # directory and exit with the incoming value of $?. |
366 | remove_tmp_ () |
367 | { |
368 | __st=$? |
369 | cleanup_ |
370 | # cd out of the directory we're about to remove |
371 | cd "$initial_cwd_" || cd / || cd /tmp |
372 | chmod -R u+rwx "$test_dir_" |
373 | # If removal fails and exit status was to be 0, then change it to 1. |
374 | rm -rf "$test_dir_" || { test $__st = 0 && __st=1; } |
375 | exit $__st |
376 | } |
377 | |
378 | # Given a directory name, DIR, if every entry in it that matches *.exe |
379 | # contains only the specified bytes (see the case stmt below), then print |
380 | # a space-separated list of those names and return 0. Otherwise, don't |
381 | # print anything and return 1. Naming constraints apply also to DIR. |
382 | find_exe_basenames_ () |
383 | { |
384 | feb_dir_=$1 |
385 | feb_fail_=0 |
386 | feb_result_= |
387 | feb_sp_= |
388 | for feb_file_ in $feb_dir_/*.exe; do |
389 | # If there was no *.exe file, or there existed a file named "*.exe" that |
390 | # was deleted between the above glob expansion and the existence test |
391 | # below, just skip it. |
392 | test "x$feb_file_" = "x$feb_dir_/*.exe" && test ! -f "$feb_file_" \ |
393 | && continue |
394 | # Exempt [.exe, since we can't create a function by that name, yet |
395 | # we can't invoke [ by PATH search anyways due to shell builtins. |
396 | test "x$feb_file_" = "x$feb_dir_/[.exe" && continue |
397 | case $feb_file_ in |
398 | *[!-a-zA-Z/0-9_.+]*) feb_fail_=1; break;; |
399 | *) # Remove leading file name components as well as the .exe suffix. |
400 | feb_file_=${feb_file_##*/} |
401 | feb_file_=${feb_file_%.exe} |
402 | feb_result_="$feb_result_$feb_sp_$feb_file_";; |
403 | esac |
404 | feb_sp_=' ' |
405 | done |
406 | test $feb_fail_ = 0 && printf %s "$feb_result_" |
407 | return $feb_fail_ |
408 | } |
409 | |
410 | # Consider the files in directory, $1. |
411 | # For each file name of the form PROG.exe, create an alias named |
412 | # PROG that simply invokes PROG.exe, then return 0. If any selected |
413 | # file name or the directory name, $1, contains an unexpected character, |
414 | # define no alias and return 1. |
415 | create_exe_shims_ () |
416 | { |
417 | case $EXEEXT in |
418 | '') return 0 ;; |
419 | .exe) ;; |
420 | *) echo "$0: unexpected \$EXEEXT value: $EXEEXT" 1>&2; return 1 ;; |
421 | esac |
422 | |
423 | base_names_=`find_exe_basenames_ $1` \ |
424 | || { echo "$0 (exe_shim): skipping directory: $1" 1>&2; return 0; } |
425 | |
426 | if test -n "$base_names_"; then |
427 | for base_ in $base_names_; do |
428 | alias "$base_"="$base_$EXEEXT" |
429 | done |
430 | fi |
431 | |
432 | return 0 |
433 | } |
434 | |
435 | # Use this function to prepend to PATH an absolute name for each |
436 | # specified, possibly-$initial_cwd_-relative, directory. |
437 | path_prepend_ () |
438 | { |
439 | while test $# != 0; do |
440 | path_dir_=$1 |
441 | case $path_dir_ in |
442 | '') fail_ "invalid path dir: '$1'";; |
443 | /*) abs_path_dir_=$path_dir_;; |
444 | *) abs_path_dir_=$initial_cwd_/$path_dir_;; |
445 | esac |
446 | case $abs_path_dir_ in |
447 | *:*) fail_ "invalid path dir: '$abs_path_dir_'";; |
448 | esac |
449 | PATH="$abs_path_dir_:$PATH" |
450 | |
451 | # Create an alias, FOO, for each FOO.exe in this directory. |
452 | create_exe_shims_ "$abs_path_dir_" \ |
453 | || fail_ "something failed (above): $abs_path_dir_" |
454 | shift |
455 | done |
456 | export PATH |
457 | } |
458 | |
459 | setup_ () |
460 | { |
461 | if test "$VERBOSE" = yes; then |
462 | # Test whether set -x may cause the selected shell to corrupt an |
463 | # application's stderr. Many do, including zsh-4.3.10 and the /bin/sh |
464 | # from SunOS 5.11, OpenBSD 4.7 and Irix 5.x and 6.5. |
465 | # If enabling verbose output this way would cause trouble, simply |
466 | # issue a warning and refrain. |
467 | if $gl_set_x_corrupts_stderr_; then |
468 | warn_ "using SHELL=$SHELL with 'set -x' corrupts stderr" |
469 | else |
470 | set -x |
471 | fi |
472 | fi |
473 | |
474 | initial_cwd_=$PWD |
475 | |
476 | pfx_=`testdir_prefix_` |
477 | test_dir_=`mktempd_ "$initial_cwd_" "$pfx_-$ME_.XXXX"` \ |
478 | || fail_ "failed to create temporary directory in $initial_cwd_" |
479 | cd "$test_dir_" || fail_ "failed to cd to temporary directory" |
480 | |
481 | # As autoconf-generated configure scripts do, ensure that IFS |
482 | # is defined initially, so that saving and restoring $IFS works. |
483 | gl_init_sh_nl_=' |
484 | ' |
485 | IFS=" "" $gl_init_sh_nl_" |
486 | |
487 | # This trap statement, along with a trap on 0 below, ensure that the |
488 | # temporary directory, $test_dir_, is removed upon exit as well as |
489 | # upon receipt of any of the listed signals. |
490 | for sig_ in 1 2 3 13 15; do |
491 | eval "trap 'Exit $(expr $sig_ + 128)' $sig_" |
492 | done |
493 | } |
494 | |
495 | # Create a temporary directory, much like mktemp -d does. |
496 | # Written by Jim Meyering. |
497 | # |
498 | # Usage: mktempd_ /tmp phoey.XXXXXXXXXX |
499 | # |
500 | # First, try to use the mktemp program. |
501 | # Failing that, we'll roll our own mktemp-like function: |
502 | # - try to get random bytes from /dev/urandom |
503 | # - failing that, generate output from a combination of quickly-varying |
504 | # sources and gzip. Ignore non-varying gzip header, and extract |
505 | # "random" bits from there. |
506 | # - given those bits, map to file-name bytes using tr, and try to create |
507 | # the desired directory. |
508 | # - make only $MAX_TRIES_ attempts |
509 | |
510 | # Helper function. Print $N pseudo-random bytes from a-zA-Z0-9. |
511 | rand_bytes_ () |
512 | { |
513 | n_=$1 |
514 | |
515 | # Maybe try openssl rand -base64 $n_prime_|tr '+/=\012' abcd first? |
516 | # But if they have openssl, they probably have mktemp, too. |
517 | |
518 | chars_=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 |
519 | dev_rand_=/dev/urandom |
520 | if test -r "$dev_rand_"; then |
521 | # Note: 256-length($chars_) == 194; 3 copies of $chars_ is 186 + 8 = 194. |
522 | dd ibs=$n_ count=1 if=$dev_rand_ 2>/dev/null \ |
523 | | LC_ALL=C tr -c $chars_ 01234567$chars_$chars_$chars_ |
524 | return |
525 | fi |
526 | |
527 | n_plus_50_=`expr $n_ + 50` |
528 | cmds_='date; date +%N; free; who -a; w; ps auxww; ps ef; netstat -n' |
529 | data_=` (eval "$cmds_") 2>&1 | gzip ` |
530 | |
531 | # Ensure that $data_ has length at least 50+$n_ |
532 | while :; do |
533 | len_=`echo "$data_"|wc -c` |
534 | test $n_plus_50_ -le $len_ && break; |
535 | data_=` (echo "$data_"; eval "$cmds_") 2>&1 | gzip ` |
536 | done |
537 | |
538 | echo "$data_" \ |
539 | | dd bs=1 skip=50 count=$n_ 2>/dev/null \ |
540 | | LC_ALL=C tr -c $chars_ 01234567$chars_$chars_$chars_ |
541 | } |
542 | |
543 | mktempd_ () |
544 | { |
545 | case $# in |
546 | 2);; |
547 | *) fail_ "Usage: mktempd_ DIR TEMPLATE";; |
548 | esac |
549 | |
550 | destdir_=$1 |
551 | template_=$2 |
552 | |
553 | MAX_TRIES_=4 |
554 | |
555 | # Disallow any trailing slash on specified destdir: |
556 | # it would subvert the post-mktemp "case"-based destdir test. |
557 | case $destdir_ in |
558 | / | //) destdir_slash_=$destdir;; |
559 | */) fail_ "invalid destination dir: remove trailing slash(es)";; |
560 | *) destdir_slash_=$destdir_/;; |
561 | esac |
562 | |
563 | case $template_ in |
564 | *XXXX) ;; |
565 | *) fail_ \ |
566 | "invalid template: $template_ (must have a suffix of at least 4 X's)";; |
567 | esac |
568 | |
569 | # First, try to use mktemp. |
570 | d=`unset TMPDIR; { mktemp -d -t -p "$destdir_" "$template_"; } 2>/dev/null` && |
571 | |
572 | # The resulting name must be in the specified directory. |
573 | case $d in "$destdir_slash_"*) :;; *) false;; esac && |
574 | |
575 | # It must have created the directory. |
576 | test -d "$d" && |
577 | |
578 | # It must have 0700 permissions. Handle sticky "S" bits. |
579 | perms=`ls -dgo "$d" 2>/dev/null` && |
580 | case $perms in drwx--[-S]---*) :;; *) false;; esac && { |
581 | echo "$d" |
582 | return |
583 | } |
584 | |
585 | # If we reach this point, we'll have to create a directory manually. |
586 | |
587 | # Get a copy of the template without its suffix of X's. |
588 | base_template_=`echo "$template_"|sed 's/XX*$//'` |
589 | |
590 | # Calculate how many X's we've just removed. |
591 | template_length_=`echo "$template_" | wc -c` |
592 | nx_=`echo "$base_template_" | wc -c` |
593 | nx_=`expr $template_length_ - $nx_` |
594 | |
595 | err_= |
596 | i_=1 |
597 | while :; do |
598 | X_=`rand_bytes_ $nx_` |
599 | candidate_dir_="$destdir_slash_$base_template_$X_" |
600 | err_=`mkdir -m 0700 "$candidate_dir_" 2>&1` \ |
601 | && { echo "$candidate_dir_"; return; } |
602 | test $MAX_TRIES_ -le $i_ && break; |
603 | i_=`expr $i_ + 1` |
604 | done |
605 | fail_ "$err_" |
606 | } |
607 | |
608 | # If you want to override the testdir_prefix_ function, |
609 | # or to add more utility functions, use this file. |
610 | test -f "$srcdir/init.cfg" \ |
611 | && . "$srcdir/init.cfg" |
612 | |
613 | setup_ "$@" |
614 | # This trap is here, rather than in the setup_ function, because some |
615 | # shells run the exit trap at shell function exit, rather than script exit. |
616 | trap remove_tmp_ 0 |