diff options
Diffstat (limited to 'contrib/netbsd-tests/fs/nullfs/t_basic.c')
| -rw-r--r-- | contrib/netbsd-tests/fs/nullfs/t_basic.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/fs/nullfs/t_basic.c b/contrib/netbsd-tests/fs/nullfs/t_basic.c new file mode 100644 index 0000000..21dfccd --- /dev/null +++ b/contrib/netbsd-tests/fs/nullfs/t_basic.c @@ -0,0 +1,174 @@ +/* $NetBSD: t_basic.c,v 1.3 2010/06/09 08:37:16 pooka Exp $ */ + +#include <sys/types.h> +#include <sys/mount.h> + +#include <atf-c.h> +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <stdlib.h> + +#include <rump/rump.h> +#include <rump/rump_syscalls.h> + +#include <miscfs/nullfs/null.h> +#include <fs/tmpfs/tmpfs_args.h> + +#include "../../h_macros.h" + +ATF_TC(basic); +ATF_TC_HEAD(basic, tc) +{ + atf_tc_set_md_var(tc, "descr", "basic nullfs functionality"); +} + +#define MSTR "magic bus" + +static void +xput_tfile(const char *path, const char *mstr) +{ + int fd; + + fd = rump_sys_open(path, O_CREAT | O_RDWR, 0777); + if (fd == -1) + atf_tc_fail_errno("create %s", path); + if (rump_sys_write(fd, MSTR, sizeof(MSTR)) != sizeof(MSTR)) + atf_tc_fail_errno("write to testfile"); + rump_sys_close(fd); +} + +static int +xread_tfile(const char *path, const char *mstr) +{ + char buf[128]; + int fd; + + fd = rump_sys_open(path, O_RDONLY); + if (fd == -1) + return errno; + if (rump_sys_read(fd, buf, sizeof(buf)) == -1) + atf_tc_fail_errno("read tfile"); + rump_sys_close(fd); + if (strcmp(buf, MSTR) == 0) + return 0; + return EPROGMISMATCH; +} + +static void +mountnull(const char *what, const char *mp, int flags) +{ + struct null_args nargs; + + memset(&nargs, 0, sizeof(nargs)); + nargs.nulla_target = __UNCONST(what); + if (rump_sys_mount(MOUNT_NULL, mp, flags, &nargs, sizeof(nargs)) == -1) + atf_tc_fail_errno("could not mount nullfs"); + +} + +ATF_TC_BODY(basic, tc) +{ + struct tmpfs_args targs; + struct stat sb; + int error; + + rump_init(); + if (rump_sys_mkdir("/td1", 0777) == -1) + atf_tc_fail_errno("mp1"); + if (rump_sys_mkdir("/td2", 0777) == -1) + atf_tc_fail_errno("mp1"); + + /* use tmpfs because rumpfs doesn't support regular files */ + memset(&targs, 0, sizeof(targs)); + targs.ta_version = TMPFS_ARGS_VERSION; + targs.ta_root_mode = 0777; + if (rump_sys_mount(MOUNT_TMPFS, "/td1", 0, &targs, sizeof(targs)) == -1) + atf_tc_fail_errno("could not mount tmpfs td1"); + + mountnull("/td1", "/td2", 0); + + /* test unnull -> null */ + xput_tfile("/td1/tensti", "jeppe"); + error = xread_tfile("/td2/tensti", "jeppe"); + if (error != 0) + atf_tc_fail("null compare failed: %d (%s)", + error, strerror(error)); + + /* test null -> unnull */ + xput_tfile("/td2/kiekko", "keppi"); + error = xread_tfile("/td1/kiekko", "keppi"); + if (error != 0) + atf_tc_fail("unnull compare failed: %d (%s)", + error, strerror(error)); + + /* test unnull -> null overwrite */ + xput_tfile("/td1/tensti", "se oolannin sota"); + error = xread_tfile("/td2/tensti", "se oolannin sota"); + if (error != 0) + atf_tc_fail("unnull compare failed: %d (%s)", + error, strerror(error)); + + /* test that /td2 is unaffected in "real life" */ + if (rump_sys_unmount("/td2", 0) == -1) + atf_tc_fail_errno("cannot unmount nullfs"); + if ((error = rump_sys_stat("/td2/tensti", &sb)) != -1 + || errno != ENOENT) { + atf_tc_fail("stat tensti should return ENOENT, got %d", error); + } + if ((error = rump_sys_stat("/td2/kiekko", &sb)) != -1 + || errno != ENOENT) { + atf_tc_fail("stat kiekko should return ENOENT, got %d", error); + } + + /* done */ +} + +ATF_TC(twistymount); +ATF_TC_HEAD(twistymount, tc) +{ + + /* this is expected to fail until the PR is fixed */ + atf_tc_set_md_var(tc, "descr", "\"recursive\" mounts deadlock" + " (kern/43439)"); +} + +/* + * Mapping to identifiers in kern/43439: + * /td = /home/current/pkgsrc + * /td/dist = /home/current/pkgsrc/distiles + * /mp = /usr/pkgsrc + * /mp/dist = /usr/pkgsrc/distfiles -- "created" by first null mount + */ + +ATF_TC_BODY(twistymount, tc) +{ + int mkd = 0; + + rump_init(); + + if (rump_sys_mkdir("/td", 0777) == -1) + atf_tc_fail_errno("mkdir %d", mkd++); + if (rump_sys_mkdir("/td/dist", 0777) == -1) + atf_tc_fail_errno("mkdir %d", mkd++); + if (rump_sys_mkdir("/mp", 0777) == -1) + atf_tc_fail_errno("mkdir %d", mkd++); + + /* MNT_RDONLY doesn't matter, but just for compat with the PR */ + mountnull("/td", "/mp", MNT_RDONLY); + mountnull("/td/dist", "/mp/dist", 0); + + /* if we didn't get a locking-against-meself panic, we passed */ +} + +ATF_TP_ADD_TCS(tp) +{ + + ATF_TP_ADD_TC(tp, basic); + ATF_TP_ADD_TC(tp, twistymount); + + return atf_no_error(); +} |
