From: David van Moolenbroek Date: Mon, 19 Aug 2013 22:49:07 +0000 (+0200) Subject: test55: add tests for getvfsstat(2) X-Git-Tag: v3.3.0~624 X-Git-Url: http://zhaoyanbai.com/repos/nslookup.html?a=commitdiff_plain;h=51dbf35d9dee445818e6b4ba055c677e6c22b3cf;p=minix.git test55: add tests for getvfsstat(2) Change-Id: Idc3da4137494db836590c71414017832f15a2628 --- diff --git a/test/test55.c b/test/test55.c index a00b7f945..2c8cdc1ff 100644 --- a/test/test55.c +++ b/test/test55.c @@ -1,3 +1,4 @@ +/* Tests for statvfs(2) call family */ #include #include #include @@ -7,10 +8,15 @@ #include #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"; @@ -36,7 +42,7 @@ static void create_file(void) if (close(fd) < 0) e(3); } -int main(int argc, char *argv[]) +void test55a(void) { struct statvfs stats; unsigned long f_bsize, f_bsize_new; @@ -50,56 +56,157 @@ int main(int argc, char *argv[]) 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); - subtest = 1; for(i = 0; i < TRIALS; i++) { - 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); - } + test55a(); + test55b(); } quit();