minix/test/common.c

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/* 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_error.
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*/
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/statvfs.h>
#include <sys/syslimits.h>
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#include "common.h"
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int common_test_nr = -1, errct = 0, subtest;
int quietflag = 1, bigflag = 0;
/* provide a default max_error symbol as Max_error with a value
* of 5. The test program can override it wit its own max_error
* symbol if it wants that this code will then use instead.
*/
__weak_alias(max_error,Max_error);
int Max_error = 5;
extern int max_error;
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void start(test_nr)
int test_nr;
{
char buf[64];
int i;
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/* if this variable is set, specify to tests we are running
* in 'overnight' mode
*/
bigflag = !!getenv(BIGVARNAME);
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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];
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_f(char *file, int line, int n)
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{
int err_number;
err_number = errno; /* Store before printf can clobber it */
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if (errct == 0) printf("\n"); /* finish header */
printf("%s:%d: Subtest %d, error %d, errno %d: %s\n",
file, line, subtest, n, err_number, strerror(err_number));
if (++errct > max_error) {
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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);
}
}
void
printprogress(char *msg, int i, int max)
{
int use_i = i + 1;
static time_t start_time, prev_time;
static int prev_i;
time_t now;
if(quietflag) return;
time(&now);
if(prev_i >= i) start_time = now;
if(now > start_time && prev_time < now) {
double i_per_sec = i / (now - start_time);
int remain_secs;
remain_secs = (int)((max-i) / i_per_sec);
fprintf(stderr, "%-35s %7d/%7d %3d%% ETA %3ds\r", msg,
use_i, (max), use_i*100/(max), remain_secs);
fflush(stderr);
}
if(use_i >= max) {
fprintf(stderr, "%-35s done \n", msg);
}
prev_i = i;
prev_time = now;
}
void getmem(u32_t *total, u32_t *free, u32_t *cached)
{
u32_t pagesize, largest;
FILE *f = fopen("/proc/meminfo", "r");
if(!f) return;
if(fscanf(f, "%u %u %u %u %u", &pagesize, total, free,
&largest, cached) != 5) {
fprintf(stderr, "fscanf of meminfo failed\n");
exit(1);
}
fclose(f);
}