minix/test/common.c

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2005-04-21 16:53:53 +02:00
/* Utility routines for Minix tests.
* This is designed to be #includ'ed near the top of test programs. It is
* self-contained except for MAX_ERRORS.
*/
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/statvfs.h>
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int common_test_nr = -1, errct = 0, subtest;
void cleanup(void);
int does_fs_truncate(void);
void e(int n);
int name_max(char *path);
void quit(void);
void rm_rf_dir(int test_nr);
void rm_rf_ppdir(int test_nr);
void start(int test_nr);
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void start(test_nr)
int test_nr;
{
char buf[64];
int i;
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common_test_nr = test_nr;
printf("Test %2d ", test_nr);
fflush(stdout); /* since stdout is probably line buffered */
sync();
rm_rf_dir(test_nr);
sprintf(buf, "mkdir DIR_%02d", test_nr);
if (system(buf) != 0) {
e(666);
quit();
}
sprintf(buf, "DIR_%02d", test_nr);
if (chdir(buf) != 0) {
e(6666);
quit();
}
for (i = 3; i < OPEN_MAX; ++i) {
/* Close all files except stdin, stdout, and stderr */
(void) close(i);
}
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}
int does_fs_truncate(void)
{
struct statvfs stvfs;
int does_truncate = 0;
char cwd[PATH_MAX]; /* Storage for path to current working dir */
if (realpath(".", cwd) == NULL) e(7777); /* Get current working dir */
if (statvfs(cwd, &stvfs) != 0) e(7778); /* Get FS information */
/* Depending on how an FS handles too long file names, we have to adjust our
* error checking. If an FS does not truncate file names, it should generate
* an ENAMETOOLONG error when we provide too long a file name.
*/
if (!(stvfs.f_flag & ST_NOTRUNC)) does_truncate = 1;
return(does_truncate);
}
int name_max(char *path)
{
struct statvfs stvfs;
if (statvfs(path, &stvfs) != 0) e(7779);
return(stvfs.f_namemax);
}
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void rm_rf_dir(test_nr)
int test_nr;
{
char buf[128];
/* "rm -rf dir" will not work unless all the subdirectories have suitable
* permissions. Minix chmod is not recursive so it is not easy to change
* all the permissions. I had to fix opendir() to stop the bash shell
* from hanging when it opendir()s fifos.
*/
sprintf(buf, "chmod 777 DIR_%02d DIR_%02d/* DIR_%02d/*/* >/dev/null 2>&1",
test_nr, test_nr, test_nr);
(void) system(buf); /* usually fails */
sprintf(buf, "rm -rf DIR_%02d >/dev/null 2>&1", test_nr);
if (system(buf) != 0) printf("Warning: system(\"%s\") failed\n", buf);
}
void rm_rf_ppdir(test_nr)
int test_nr;
{
/* Attempt to remove everything in the test directory (== the current dir). */
char buf[128];
sprintf(buf, "chmod 777 ../DIR_%02d/* ../DIR_%02d/*/* >/dev/null 2>&1",
test_nr, test_nr);
(void) system(buf);
sprintf(buf, "rm -rf ../DIR_%02d >/dev/null 2>&1", test_nr);
if (system(buf) != 0) printf("Warning: system(\"%s\") failed\n", buf);
}
void e(n)
int n;
{
int err_number;
err_number = errno; /* Store before printf can clobber it */
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if (errct == 0) printf("\n"); /* finish header */
printf("Subtest %d, error %d, errno %d: %s\n",
subtest, n, errno, strerror(errno));
if (errct++ > MAX_ERROR) {
printf("Too many errors; test aborted\n");
cleanup();
exit(1);
}
errno = err_number;
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}
void cleanup()
{
if (chdir("..") == 0 && common_test_nr != -1) rm_rf_dir(common_test_nr);
}
void quit()
{
cleanup();
if (errct == 0) {
printf("ok\n");
exit(0);
} else {
printf("%d errors\n", errct);
exit(1);
}
}