minix3/tests/test55.c

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2020-02-21 00:59:27 +05:30
/* Tests for statvfs(2) call family */
#include <sys/statvfs.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <fcntl.h>
#include <err.h>
#include <unistd.h>
#define TRIALS 10
#define SIZE 65536
#define FSMAX 64
int max_error = 3;
#include "common.h"
int do_getvfsstat(struct statvfs *buf, size_t bufsz, int flags, int count);
void compare_statvfs(struct statvfs *st1, struct statvfs *st2);
void test55a(void);
void test55b(void);
int subtest;
char filename[] = "statvfs_test_XXXXXX";
static void create_file(void)
{
char buf[SIZE]={0};
char *p;
ssize_t ntowrite, nwritten;
int fd;
subtest = 2;
if ((fd = mkstemp(filename)) < 0) e(1);
ntowrite = SIZE;
p = &buf[0];
while (ntowrite > 0) {
if ((nwritten = write(fd, p, ntowrite)) < 0) e(2);
p += nwritten;
ntowrite -= nwritten;
}
if (close(fd) < 0) e(3);
}
void test55a(void)
{
struct statvfs stats;
unsigned long f_bsize, f_bsize_new;
unsigned long f_frsize, f_frsize_new;
fsblkcnt_t f_blocks, f_blocks_new;
fsblkcnt_t f_bfree, f_bfree_new;
fsblkcnt_t f_bavail, f_bavail_new;
fsfilcnt_t f_files, f_files_new;
fsfilcnt_t f_ffree, f_ffree_new;
fsfilcnt_t f_favail, f_favail_new;
unsigned long f_fsid, f_fsid_new;
unsigned long f_flag, f_flag_new;
unsigned long f_namemax, f_namemax_new;
subtest = 1;
if (statvfs(".", &stats) < 0) e(1);
f_bsize = stats.f_bsize ;
f_frsize = stats.f_frsize ;
f_blocks = stats.f_blocks ;
f_bfree = stats.f_bfree ;
f_bavail = stats.f_bavail ;
f_files = stats.f_files ;
f_ffree = stats.f_ffree ;
f_favail = stats.f_favail ;
f_fsid = stats.f_fsid ;
f_flag = stats.f_flag ;
f_namemax = stats.f_namemax;
create_file();
if (statvfs(".", &stats) < 0) e(2);
if (unlink(filename) < 0) e(3);
f_bsize_new = stats.f_bsize ;
f_frsize_new = stats.f_frsize ;
f_blocks_new = stats.f_blocks ;
f_bfree_new = stats.f_bfree ;
f_bavail_new = stats.f_bavail ;
f_files_new = stats.f_files ;
f_ffree_new = stats.f_ffree ;
f_favail_new = stats.f_favail ;
f_fsid_new = stats.f_fsid ;
f_flag_new = stats.f_flag ;
f_namemax_new = stats.f_namemax;
if (!((f_bsize == f_bsize_new) &&
(f_frsize == f_frsize_new) &&
(f_blocks == f_blocks_new) &&
(f_bfree > f_bfree_new) &&
(f_bavail > f_bavail_new) &&
(f_files == f_files_new) &&
(f_ffree == f_ffree_new + 1) &&
(f_favail == f_favail_new + 1) &&
(f_fsid == f_fsid_new) &&
(f_flag == f_flag_new) &&
(f_namemax == f_namemax_new))) {
e(4);
}
}
int do_getvfsstat(struct statvfs *buf, size_t bufsz, int flags, int count)
{
int i, j;
if (getvfsstat(buf, bufsz, flags) != count) e(101);
/* All file system identifiers should be unique. */
for (i = 0; i < count - 1; i++) {
for (j = i + 1; j < count; j++) {
if (buf[i].f_fsid == buf[j].f_fsid) e(102);
if (!memcmp(&buf[i].f_fsidx, &buf[j].f_fsidx,
sizeof(buf[j].f_fsidx))) e(103);
}
}
/* Expect one root file system. */
j = -1;
for (i = 0; i < count; i++) {
if (!strcmp(buf[i].f_mntonname, "/")) {
if (j != -1) e(104);
j = i;
}
}
if (j == -1) e(105);
return j;
}
void compare_statvfs(struct statvfs *st1, struct statvfs *st2)
{
int i;
/* The structures should basically be identical, but a background
* process calling statvfs for some reason might screw things up.
* Thus, we only compare fields that we know should be identical.
* For the strings, we use memcmp rather than strcmp to ensure that
* no garbage is left in the fields.
*/
if (st1->f_flag != st2->f_flag) e(201);
if (st1->f_bsize != st2->f_bsize) e(202);
if (st1->f_frsize != st2->f_frsize) e(203);
if (st1->f_iosize != st2->f_iosize) e(204);
if (st1->f_fsid != st2->f_fsid) e(205);
if (memcmp(&st1->f_fsidx, &st2->f_fsidx, sizeof(st1->f_fsidx))) e(206);
if (st1->f_namemax != st2->f_namemax) e(207);
if (st1->f_owner != st2->f_owner) e(208);
for (i = 0; i < sizeof(st1->f_spare) / sizeof(st1->f_spare[0]); i++) {
if (st1->f_spare[i] != 0) e(209);
if (st2->f_spare[i] != 0) e(210);
}
if (memcmp(st1->f_fstypename, st2->f_fstypename,
sizeof(st1->f_fstypename))) e(211);
if (memcmp(st1->f_mntonname, st2->f_mntonname,
sizeof(st1->f_mntonname))) e(212);
if (memcmp(st1->f_mntfromname, st2->f_mntfromname,
sizeof(st1->f_mntfromname))) e(213);
}
void test55b(void)
{
static struct statvfs buf[FSMAX];
struct statvfs rootbuf;
int count, root;
subtest = 2;
count = getvfsstat(NULL, 0, ST_WAIT);
if (count < 2) e(1); /* we have at least the root FS and ProcFS */
if (count > FSMAX) e(2);
if (getvfsstat(buf, 0, ST_WAIT) != 0) e(3);
if (getvfsstat(buf, sizeof(buf[0]) - 1, ST_WAIT) != 0) e(4);
if (getvfsstat(buf, sizeof(buf[0]), ST_WAIT) != 1) e(5);
if (getvfsstat(buf, sizeof(buf[0]) + 1, ST_WAIT) != 1) e(6);
if (getvfsstat(buf, sizeof(buf[0]) * 2, ST_WAIT) != 2) e(7);
/* We assume that nothing is being un/mounted right now. */
root = do_getvfsstat(buf, sizeof(buf), ST_WAIT, count);
/* Compare cached and uncached copies. */
if (statvfs1("/", &rootbuf, ST_NOWAIT) != 0) e(13);
compare_statvfs(&buf[root], &rootbuf);
/* Do the same again, but now the other way around. */
rootbuf = buf[root];
root = do_getvfsstat(buf, sizeof(buf), ST_NOWAIT, count);
compare_statvfs(&buf[root], &rootbuf);
}
int main(int argc, char **argv)
{
int i;
start(55);
for(i = 0; i < TRIALS; i++) {
test55a();
test55b();
}
quit();
return(-1);
}