tst_tmpdir - create a unique testing directory and make it current.
tst_rmdir - remove the directory created by tst_tmpdir.
extern char *TESTDIR;
The tst_tmpdir() function uses the first three characters of the
TCID global variable as the prefix in forming a unique directory name
(via tempnam(3S)). The directory is then created and made the current
If tst_tmpdir() cannot form a unique directory name, create the
directory, or chdir to the directory, it uses tst_brk() to issue
"BROK" messages for all test cases. It then exits via tst_exit().
Because tst_tmpdir() exits in the event of a problem, a test must call
it before performing any operations that would require running a
The tst_rmdir() function recursively removes the directory created by
tst_tmpdir(). This function should be used only as a companion
to tst_tmpdir() and should be called immediately prior to the test
exiting via tst_exit().
tst_rmdir() uses the system(3S) library routine (which in turn
calls fork(2)), so tests that use it cannot treat SIGCLD as an
Users may gain access to the name of the temporary directory by declaring the
external character pointer TESTDIR.
The tst_rmdir() function will check the TESTDIR global variable
to ensure that the user is not attempting to remove the root directory or
some unspecified directories with a "*" parameter. All error/warning
messages are delivered through tst_res().