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nfstest.c
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nfstest.c
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/*
Compile:
gcc nfstest.c -o nfstest -g -Wall -W
On machine 1 use:
./nfstest <port> <path to a test file>
On machine 2 use:
./nfstest <machine 1 hostname> <machine 1 port> <path to the same test file>
Machine 2 must be NFS client. It probably doesn't matter if machine 1 is
NFS client or the server, but run it in another NFS client just to be safe.
The test file must not be in the current directory, or the test will fail
in rmdir(".").
*/
#if !defined(__sun) && !defined(_AIX)
# define HAVE_FLOCK
#endif
#if defined(__linux__) || defined(__sun)
# define ST_NSECS(st) (st).st_mtim.tv_nsec
# define HAVE_ST_NSECS
#elif defined (__FreeBSD__) || defined(__APPLE__)
# define ST_NSECS(st) (st).st_mtimespec.tv_nsec
# define HAVE_ST_NSECS
#else
# define ST_NSECS(st) 0
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#define __USE_GNU
#include <fcntl.h>
#include <unistd.h>
#include <assert.h>
#include <errno.h>
#include <time.h>
#include <sys/time.h>
#include <sys/stat.h>
#ifdef HAVE_FLOCK
# include <sys/file.h>
#endif
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
enum nfs_cache_flush_method {
NFS_CACHE_FLUSH_METHOD_NONE,
NFS_CACHE_FLUSH_METHOD_OPEN_CLOSE,
NFS_CACHE_FLUSH_METHOD_CLOSE_OPEN,
NFS_CACHE_FLUSH_METHOD_FCHOWN_1_1,
NFS_CACHE_FLUSH_METHOD_FCHOWN_UID,
NFS_CACHE_FLUSH_METHOD_FCHMOD,
NFS_CACHE_FLUSH_METHOD_CHOWN_1_1,
NFS_CACHE_FLUSH_METHOD_CHOWN_UID,
NFS_CACHE_FLUSH_METHOD_CHMOD,
NFS_CACHE_FLUSH_METHOD_RMDIR,
NFS_CACHE_FLUSH_METHOD_RMDIR_PARENT,
NFS_CACHE_FLUSH_METHOD_DUP_CLOSE,
NFS_CACHE_FLUSH_METHOD_FCNTL_SHARED,
NFS_CACHE_FLUSH_METHOD_FCNTL_EXCL,
#ifdef HAVE_FLOCK
NFS_CACHE_FLUSH_METHOD_FLOCK_SHARED,
NFS_CACHE_FLUSH_METHOD_FLOCK_EXCL,
#endif
NFS_CACHE_FLUSH_METHOD_FSYNC,
NFS_CACHE_FLUSH_METHOD_O_SYNC,
#ifdef O_DIRECT
NFS_CACHE_FLUSH_METHOD_O_DIRECT,
#endif
NFS_CACHE_FLUSH_METHOD_COUNT
};
static const char *
nfs_cache_flush_method_names[NFS_CACHE_FLUSH_METHOD_COUNT] = {
"no caching",
"open+close",
"close+open",
"fchown(-1, -1)",
"fchown(uid, -1)",
"fchmod(mode)",
"chown(-1, -1)",
"chown(uid, -1)",
"chmod(mode)",
"rmdir()",
"rmdir(parent dir)",
"dup+close",
"fcntl(shared)",
"fcntl(exclusive)",
#ifdef HAVE_FLOCK
"flock(shared)",
"flock(exclusive)",
#endif
"fsync()",
"fcntl(O_SYNC)"
#ifdef O_DIRECT
,"O_DIRECT"
#endif
};
static int reverse = 0;
static void i_errorv(const char *fmt, va_list args)
{
char fmt2[1024];
unsigned int len = strlen(fmt);
int orig_errno = errno;
if (len > 2 && strcmp(fmt + len-2, "%m") == 0) {
snprintf(fmt2, len-1, "%s", fmt);
fmt = fmt2;
}
vprintf(fmt, args);
if (fmt == fmt2)
printf("%s", strerror(orig_errno));
printf("\n");
}
static void i_error(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
i_errorv(fmt, args);
va_end(args);
}
static void i_fatal(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
i_errorv(fmt, args);
va_end(args);
exit(1);
}
static void fcntl_lock(int fd, int lock_type)
{
struct flock fl;
fl.l_type = lock_type;
fl.l_whence = SEEK_SET;
fl.l_start = 0;
fl.l_len = 0;
if (fcntl(fd, F_SETLK, &fl) < 0) {
i_error("fcntl(setlk, %s) failed: %m",
lock_type == F_UNLCK ? "unlock" :
(lock_type == F_RDLCK ? "read" : "write"));
}
}
static void nfs_cache_flush_before(const char *path, int *fd_p,
enum nfs_cache_flush_method method)
{
char *p, dir[1024];
int fd = fd_p == NULL ? -1 : *fd_p;
struct stat st;
int fd2, old_flags;
off_t old_offset;
switch (method) {
case NFS_CACHE_FLUSH_METHOD_NONE:
break;
case NFS_CACHE_FLUSH_METHOD_OPEN_CLOSE:
fd2 = open(path, O_RDWR);
if (fd2 != -1)
close(fd2);
break;
case NFS_CACHE_FLUSH_METHOD_CLOSE_OPEN:
if (fd == -1)
break;
old_offset = lseek(fd, 0, SEEK_CUR);
old_flags = fcntl(fd, F_GETFL, 0);
close(fd);
*fd_p = fd = open(path, old_flags);
if (fd == -1)
i_fatal("flush reopen: open(%s) failed: %m");
lseek(fd, old_offset, SEEK_CUR);
break;
#ifdef O_DIRECT
case NFS_CACHE_FLUSH_METHOD_O_DIRECT:
if (fd == -1)
break;
old_flags = fcntl(fd, F_GETFL, 0);
if (fcntl(fd, F_SETFL, old_flags | O_DIRECT) < 0)
i_error("fcntl(%s, O_DIRECT) failed: %m", path);
break;
#endif
case NFS_CACHE_FLUSH_METHOD_O_SYNC:
if (fd == -1)
break;
old_flags = fcntl(fd, F_GETFL, 0);
if (fcntl(fd, F_SETFL, old_flags | O_SYNC) < 0)
i_error("fcntl(%s, O_SYNC) failed: %m", path);
break;
case NFS_CACHE_FLUSH_METHOD_FCHOWN_1_1:
if (fd == -1)
break;
if (fchown(fd, (uid_t)-1, (gid_t)-1) < 0)
i_fatal("fchown(-1, -1) failed: %m");
break;
case NFS_CACHE_FLUSH_METHOD_FCHOWN_UID:
if (fd == -1)
break;
if (fstat(fd, &st) < 0)
i_fatal("fstat() failed: %m");
if (fchown(fd, st.st_uid, (gid_t)-1) < 0 && errno != EPERM)
i_fatal("fchown() failed: %m");
break;
case NFS_CACHE_FLUSH_METHOD_FCHMOD:
if (fd == -1)
break;
if (fstat(fd, &st) < 0)
i_fatal("fstat() failed: %m");
if (fchmod(fd, st.st_mode) < 0)
i_fatal("fchmod() failed: %m");
break;
case NFS_CACHE_FLUSH_METHOD_CHOWN_1_1:
if (chown(path, (uid_t)-1, (gid_t)-1) < 0)
i_fatal("chown(-1, -1) failed: %m");
break;
case NFS_CACHE_FLUSH_METHOD_CHOWN_UID:
if (stat(path, &st) < 0)
i_fatal("stat(%s) failed: %m", path);
if (chown(path, st.st_uid, (gid_t)-1) < 0)
i_fatal("chown() failed: %m");
break;
case NFS_CACHE_FLUSH_METHOD_CHMOD:
if (stat(path, &st) < 0)
i_fatal("stat(%s) failed: %m", path);
if (chmod(path, st.st_mode) < 0)
i_fatal("chmod() failed: %m");
break;
case NFS_CACHE_FLUSH_METHOD_RMDIR_PARENT:
p = strrchr(path, '/');
if (p == NULL)
strcpy(dir, ".");
else
snprintf(dir, p-path+1, "%s", path);
path = dir;
/* fall through */
case NFS_CACHE_FLUSH_METHOD_RMDIR:
if (rmdir(path) == 0)
i_fatal("Oops, rmdir(%s) actually worked", path);
else if (errno != ENOTEMPTY && errno != ENOTDIR &&
errno != EBUSY && errno != EEXIST)
i_error("rmdir(%s) failed: %m", path);
break;
case NFS_CACHE_FLUSH_METHOD_DUP_CLOSE:
if (fd == -1)
break;
fd2 = dup(fd);
if (fd2 < 0)
i_fatal("dup() failed: %m");
if (close(fd2) < 0)
i_fatal("close(duped) failed: %m");
break;
case NFS_CACHE_FLUSH_METHOD_FCNTL_SHARED:
if (fd == -1)
break;
fcntl_lock(fd, F_RDLCK);
break;
case NFS_CACHE_FLUSH_METHOD_FCNTL_EXCL:
if (fd == -1)
break;
fcntl_lock(fd, F_WRLCK);
break;
#ifdef HAVE_FLOCK
case NFS_CACHE_FLUSH_METHOD_FLOCK_SHARED:
if (fd == -1)
break;
if (flock(fd, LOCK_SH | LOCK_NB) < 0)
i_error("flock() failed: %m");
break;
case NFS_CACHE_FLUSH_METHOD_FLOCK_EXCL:
if (fd == -1)
break;
if (flock(fd, LOCK_EX | LOCK_NB) < 0)
i_error("flock() failed: %m");
break;
#endif
case NFS_CACHE_FLUSH_METHOD_FSYNC:
if (fd == -1)
break;
if (fsync(fd) < 0)
i_fatal("fsync() failed: %m");
break;
case NFS_CACHE_FLUSH_METHOD_COUNT:
abort();
}
}
static void nfs_cache_flush_after(const char *path, int *fd_p,
enum nfs_cache_flush_method method)
{
int old_flags, fd = fd_p == NULL ? -1 : *fd_p;
switch (method) {
case NFS_CACHE_FLUSH_METHOD_FCNTL_SHARED:
case NFS_CACHE_FLUSH_METHOD_FCNTL_EXCL:
if (fd == -1)
break;
fcntl_lock(fd, F_UNLCK);
break;
#ifdef HAVE_FLOCK
case NFS_CACHE_FLUSH_METHOD_FLOCK_SHARED:
case NFS_CACHE_FLUSH_METHOD_FLOCK_EXCL:
if (fd == -1)
break;
flock(fd, LOCK_UN);
break;
#endif
case NFS_CACHE_FLUSH_METHOD_O_SYNC:
#ifdef O_DIRECT
case NFS_CACHE_FLUSH_METHOD_O_DIRECT:
#endif
if (fd == -1)
break;
old_flags = fcntl(fd, F_GETFL, 0);
old_flags &= ~O_SYNC;
#ifdef O_DIRECT
old_flags &= ~O_DIRECT;
#endif
if (fcntl(fd, F_SETFL, old_flags) < 0)
i_error("fcntl(%s, restore flags) failed: %m", path);
break;
default:
/* when flushing writes we called _before() before doing the
write. to get these methods working we have to do it
afterwards.. */
nfs_cache_flush_before(path, fd_p, method);
break;
}
}
static void send_cmd(int fd, char cmd)
{
if (write(fd, &cmd, 1) != 1)
i_fatal("write(cmd) failed: %m");
}
static char read_cmd(int fd)
{
int ret;
char cmd;
ret = read(fd, &cmd, 1);
if (ret <= 0) {
if (ret == 0)
i_fatal("Connection lost");
i_fatal("read(cmd) failed: %m");
}
return cmd;
}
static void wait_cmd(int fd, char wanted_cmd)
{
char cmd;
cmd = read_cmd(fd);
if (wanted_cmd != cmd)
i_fatal("Unexpected command: %c != %c", cmd, wanted_cmd);
}
static int nfs_safe_open(const char *path, int flags)
{
int fd, i;
for (i = 0; i < 10; i++) {
fd = open(path, flags);
if (fd != -1 || errno != ESTALE)
break;
}
return fd;
}
static int nfs_safe_create(const char *path, int flags, int mode)
{
int fd, i;
for (i = 0; i < 10; i++) {
fd = open(path, flags, mode);
if (fd != -1 || errno != ESTALE)
break;
}
return fd;
}
static void nfs_test_estale_server(int socket_fd, const char *path)
{
int fd;
fd = nfs_safe_create(path, O_RDWR | O_CREAT, 0600);
if (fd < 0)
i_fatal("creat(%s) failed: %m", path);
write(fd, "hello", 5);
close(fd);
send_cmd(socket_fd, '1');
wait_cmd(socket_fd, '2');
if (unlink(path) < 0)
i_error("unlink(%s) failed: %m", path);
send_cmd(socket_fd, '3');
}
static void nfs_test_estale_client(int socket_fd, const char *path)
{
char buf[100];
int fd, ret;
send_cmd(socket_fd, 'S');
wait_cmd(socket_fd, '1');
fd = open(path, O_RDWR | O_CREAT, 0600);
if (fd < 0)
i_fatal("creat(%s) failed: %m", path);
send_cmd(socket_fd, '2');
wait_cmd(socket_fd, '3');
if ((ret = read(fd, buf, sizeof(buf))) < 0) {
if (errno == ESTALE)
printf("ESTALE errors happen on read()\n");
else if (errno == EIO) {
printf("EIO errors happen on read()\n");
if (fchown(fd, 0, (gid_t)-1) == 0)
printf(" - fchown() succeeded..\n");
else if (errno == ESTALE)
printf(" - fchown() returned ESTALE\n");
else
i_error(" - fchown() failed: %m");
} else
i_fatal("read(%s) failed: %m", path);
} else if (ret != 5) {
i_error("read(%s) returned %d bytes instead of 5", path, ret);
} else {
printf("ESTALE errors don't happen\n");
}
close(fd);
wait_cmd(socket_fd, '!');
}
static void nfs_test_oexcl_server(int socket_fd, const char *path)
{
int fd;
wait_cmd(socket_fd, '1');
fd = nfs_safe_create(path, O_RDWR | O_CREAT | O_TRUNC, 0600);
if (fd < 0)
i_fatal("open(%s, O_CREAT) failed: %m", path);
close(fd);
send_cmd(socket_fd, '2');
}
static void nfs_test_oexcl_client(int socket_fd, const char *path)
{
struct stat st;
int fd;
send_cmd(socket_fd, 'E');
/* make sure it doesn't exist */
if (unlink(path) < 0 && errno != ENOENT)
i_fatal("unlink(%s) failed: %m", path);
/* make sure its nonexistence is cached */
if (stat(path, &st) < 0 && errno != ENOENT)
i_fatal("stat(%s) failed: %m", path);
send_cmd(socket_fd, '1');
wait_cmd(socket_fd, '2');
fd = nfs_safe_create(path, O_RDWR | O_CREAT | O_EXCL, 0600);
if (fd < 0) {
if (errno == EEXIST) {
printf("O_EXCL appears to be working, "
"but this could be just faked by NFS client\n");
} else
i_error("open(%s) failed: %m", path);
} else {
printf("O_EXCL doesn't work\n");
(void)close(fd);
}
wait_cmd(socket_fd, '!');
}
static void nfs_test_nsecs_server(int socket_fd, const char *path)
{
struct timeval tv[2];
int fd;
char cmd;
fd = nfs_safe_create(path, O_RDWR | O_CREAT | O_TRUNC, 0600);
if (fd < 0)
i_fatal("open(%s, O_CREAT) failed: %m", path);
/* first test microseconds */
tv[0].tv_sec = 123456789;
tv[0].tv_usec = 123456;
tv[1] = tv[0];
if (utimes(path, tv) < 0)
i_fatal("utimes(%s) failed: %m", path);
send_cmd(socket_fd, '1');
while ((cmd = read_cmd(socket_fd)) != '2') {
if (write(fd, "1", 1) < 0)
i_fatal("write(%s) failed: %m", path);
if (fsync(fd) < 0)
i_fatal("fsync(%s) failed: %m", path);
send_cmd(socket_fd, '3');
}
close(fd);
}
static void nfs_test_nsecs_client(int socket_fd, const char *path)
{
struct stat st;
int i;
send_cmd(socket_fd, 'N');
wait_cmd(socket_fd, '1');
nfs_cache_flush_before(path, NULL, NFS_CACHE_FLUSH_METHOD_OPEN_CLOSE);
if (stat(path, &st) < 0)
i_fatal("stat(%s) failed: %m", path);
if (st.st_mtime != 123456789) {
i_error("mtime test failed, timestamp %u != 123456789",
st.st_mtime);
} else if (ST_NSECS(st)/1000 == 123456) {
/* we have microsecond resolution at least,
see if we have nanoseconds */
for (i = 0; i < 10 && ST_NSECS(st) % 1000 == 0; i++) {
send_cmd(socket_fd, 'x');
wait_cmd(socket_fd, '3');
nfs_cache_flush_before(path, NULL, NFS_CACHE_FLUSH_METHOD_OPEN_CLOSE);
if (stat(path, &st) < 0)
i_fatal("stat(%s) failed: %m", path);
}
if (ST_NSECS(st) % 1000 == 0)
printf("timestamps resolution: microseconds\n");
else
printf("timestamps resolution: nanoseconds\n");
} else if (ST_NSECS(st) != 0) {
printf("timestamps resolution: other (%u)\n",
(unsigned int)ST_NSECS(st));
} else {
#ifdef HAVE_ST_NSECS
printf("timestamps resolution: seconds\n");
#else
printf("timestamps resolution: unknown, "
"don't know how to get nanoseconds from stat()\n");
#endif
}
send_cmd(socket_fd, '2');
wait_cmd(socket_fd, '!');
}
static void nfs_test_fattrcache_server(int socket_fd, const char *path)
{
struct timeval tv[2];
int fd;
char cmd;
if (unlink(path) < 0 && errno != ENOENT)
i_fatal("unlink(%s) failed: %m", path);
fd = nfs_safe_create(path, O_RDWR | O_CREAT | O_TRUNC, 0600);
if (fd < 0)
i_fatal("creat(%s) failed: %m", path);
tv[0].tv_sec = time(NULL);
tv[0].tv_usec = 0;
tv[1] = tv[0];
if (utimes(path, tv) < 0)
i_fatal("utimes(%s) failed: %m", path);
send_cmd(socket_fd, '1');
wait_cmd(socket_fd, '2');
do {
if (write(fd, "hello", 5) != 5)
i_fatal("write(%s) failed: %m", path);
nfs_cache_flush_after(path, &fd, NFS_CACHE_FLUSH_METHOD_FSYNC);
/* make sure the mtime changes */
tv[0].tv_sec++;
tv[1].tv_sec++;
if (utimes(path, tv) < 0)
i_fatal("utimes(%s) failed: %m", path);
send_cmd(socket_fd, '3');
cmd = read_cmd(socket_fd);
} while (cmd == '2');
if (cmd != '4')
i_fatal("expected '4'");
close(fd);
}
static void nfs_test_fattrcache_client(int socket_fd, const char *path)
{
struct stat st1, st2;
enum nfs_cache_flush_method method;
int fd, fails = 0;
printf("\nTesting file attribute cache..\n");
send_cmd(socket_fd, 'F');
wait_cmd(socket_fd, '1');
fd = nfs_safe_open(path, O_RDWR);
if (fd < 0)
i_fatal("open(%s) failed: %m", path);
for (method = 1; method < NFS_CACHE_FLUSH_METHOD_COUNT; ) {
if (fstat(fd, &st1) < 0)
i_fatal("fstat(%s) failed: %m", path);
send_cmd(socket_fd, '2');
wait_cmd(socket_fd, '3');
if (fstat(fd, &st2) < 0)
i_fatal("fstat(%s) failed: %m", path);
if (st1.st_mtime == st2.st_mtime) {
nfs_cache_flush_before(path, &fd, method);
if (fstat(fd, &st2) < 0)
i_fatal("fstat(%s) failed: %m", path);
nfs_cache_flush_after(path, &fd, method);
printf("Attr cache flush %s: %s\n",
nfs_cache_flush_method_names[method],
st1.st_mtime == st2.st_mtime ? "failed" : "OK");
method++;
fails = 0;
} else {
/* didn't even require flushing. try again a couple
of times. */
if (++fails == 3) {
printf("NFS attribute cache seems to be disabled\n");
break;
}
}
}
close(fd);
send_cmd(socket_fd, '4');
wait_cmd(socket_fd, '!');
}
static void nfs_test_fhandlecache_server(int socket_fd, const char *path)
{
char dir[1024], temp_path1[1024], temp_path2[1024], *p;
struct timeval tv[2], dir_tv[2];
int fd;
char cmd;
if (unlink(path) < 0 && errno != ENOENT)
i_fatal("unlink(%s) failed: %m", path);
p = strrchr(path, '/');
if (p == NULL)
strcpy(dir, ".");
else
snprintf(dir, p - path + 1, "%s", path);
snprintf(temp_path1, sizeof(temp_path1), "%s.1", path);
snprintf(temp_path2, sizeof(temp_path2), "%s.2", path);
fd = nfs_safe_create(temp_path1, O_RDWR | O_CREAT | O_TRUNC, 0600);
if (fd < 0)
i_fatal("creat(%s) failed: %m", temp_path1);
close(fd);
fd = nfs_safe_create(temp_path2, O_RDWR | O_CREAT | O_TRUNC, 0600);
if (fd < 0)
i_fatal("creat(%s) failed: %m", temp_path2);
close(fd);
tv[0].tv_sec = 0;
tv[0].tv_usec = 0;
tv[1] = tv[0];
dir_tv[0].tv_sec = time(NULL);
dir_tv[0].tv_usec = 0;
dir_tv[1] = dir_tv[0];
if (link(temp_path1, path) < 0)
i_fatal("link(%s, %s) failed: %m", temp_path1, path);
if (utimes(path, tv) < 0)
i_fatal("utimes(%s) failed: %m", path);
if (utimes(dir, dir_tv) < 0)
i_fatal("utimes(%s) failed: %m", dir);
send_cmd(socket_fd, '1');
while ((cmd = read_cmd(socket_fd)) != '4') {
unlink(path);
if (cmd == 'b') {
if (link(temp_path1, path) < 0)
i_fatal("link(%s, %s) failed: %m", temp_path1, path);
} else {
if (link(temp_path2, path) < 0)
i_fatal("link(%s, %s) failed: %m", temp_path1, path);
}
tv[1].tv_sec++;
if (utimes(path, tv) < 0)
i_fatal("utimes(%s) failed: %m", path);
/* keep directory's mtime the same so the flushing doesn't
happen because of it. */
if (utimes(dir, dir_tv) < 0)
i_fatal("utimes(%s) failed: %m", dir);
send_cmd(socket_fd, '3');
}
if (cmd != '4')
i_fatal("expected '4'");
unlink(temp_path1);
unlink(temp_path2);
}
static void nfs_test_fhandlecache_client(int socket_fd, const char *path)
{
struct stat st1, st2;
enum nfs_cache_flush_method method;
char dir[1024], temp_path1[1024], temp_path2[1024], *p;
const char *flush_path;
time_t expected_mtime;
ino_t ino1, ino2;
int fd, file_fd, success = 0;
printf("\nTesting file handle cache..\n");
snprintf(temp_path1, sizeof(temp_path1), "%s.1", path);
snprintf(temp_path2, sizeof(temp_path2), "%s.2", path);
p = strrchr(path, '/');
if (p == NULL)
strcpy(dir, ".");
else
snprintf(dir, p - path + 1, "%s", path);
send_cmd(socket_fd, 'H');
wait_cmd(socket_fd, '1');
fd = open(dir, O_RDONLY);
if (fd == -1)
i_fatal("open(%s) failed: %m", dir);
if (stat(temp_path1, &st1) < 0)
i_error("stat(%s) failed: %m", temp_path1);
if (stat(temp_path2, &st2) < 0)
i_error("stat(%s) failed: %m", temp_path2);
if (st1.st_ino == st2.st_ino)
i_error("Temp files' inodes are the same..");
ino1 = st1.st_ino;
ino2 = st2.st_ino;
/* fill the file's attribute cache */
file_fd = nfs_safe_create(path, O_RDWR | O_CREAT, 0600);
if (file_fd == -1)
i_fatal("open(%s) failed: %m", path);
close(file_fd);
expected_mtime = 1;
for (method = 0; method < NFS_CACHE_FLUSH_METHOD_COUNT; ) {
if (stat(path, &st1) < 0 ||
stat(path, &st1) < 0)
i_fatal("stat(%s) failed: %m", path);
if (st1.st_ino == ino1)
send_cmd(socket_fd, 'a');
else if (st1.st_ino == ino2)
send_cmd(socket_fd, 'b');
else
i_fatal("%s has unexpected inode", path);
wait_cmd(socket_fd, '3');
flush_path = method == NFS_CACHE_FLUSH_METHOD_RMDIR ||
method == NFS_CACHE_FLUSH_METHOD_RMDIR_PARENT ?
path : dir;
nfs_cache_flush_before(flush_path, &fd, method);
if (stat(path, &st2) < 0)
i_fatal("stat(%s) failed: %m", path);
nfs_cache_flush_after(flush_path, &fd, method);
if (st1.st_ino != st2.st_ino)
success = 1;
printf("File handle cache flush %s: %s\n",
nfs_cache_flush_method_names[method],
st1.st_ino == st2.st_ino ? "failed" : "OK");
if (st1.st_ino == st2.st_ino &&
st2.st_mtime == expected_mtime)
printf(" - inode didn't change, but mtime did\n");
else if (st1.st_ino != st2.st_ino &&
st2.st_mtime != expected_mtime)
printf(" - inode changed, but mtime is wrong\n");
if (st1.st_ino != ino1 && st1.st_ino != ino2)
printf(" - inode is neither temp1 nor temp2 file's\n");
expected_mtime++;
method++;
}
send_cmd(socket_fd, '4');
if (!success)
printf("Looks like there's no way to flush directory's attribute cache\n");
close(fd);
wait_cmd(socket_fd, '!');
}
static void nfs_test_neg_fhandlecache_server(int socket_fd, const char *path)
{
struct timeval tv[2];
int fd;
char cmd;
if (unlink(path) < 0 && errno != ENOENT)
i_fatal("unlink(%s) failed: %m", path);
tv[0].tv_sec = 0;
tv[0].tv_usec = 0;
tv[1] = tv[0];
send_cmd(socket_fd, '1');
while ((cmd = read_cmd(socket_fd)) == '2') {
fd = open(path, O_CREAT | O_TRUNC, 0600);
if (fd == -1)
i_fatal("creat(%s) failed: %m", path);
close(fd);
if (utimes(path, tv) < 0)
i_fatal("utimes(%s) failed: %m", path);
tv[1].tv_sec++;
send_cmd(socket_fd, '3');
wait_cmd(socket_fd, '4');
if (unlink(path) < 0 && errno != ENOENT)
i_fatal("unlink(%s) failed: %m", path);
send_cmd(socket_fd, '5');
}
}
static void nfs_test_neg_fhandlecache_client(int socket_fd, const char *path)
{
struct stat st;
enum nfs_cache_flush_method method;
const char *flush_path;
char dir[1024], *p;
time_t expected_mtime;
int fd, success = 0;
printf("\nTesting negative file handle cache..\n");
p = strrchr(path, '/');
if (p == NULL)
strcpy(dir, ".");
else
snprintf(dir, p - path + 1, "%s", path);
send_cmd(socket_fd, 'G');
wait_cmd(socket_fd, '1');
fd = open(dir, O_RDONLY);
if (fd == -1)
i_fatal("open(%s) failed: %m", dir);
if (unlink(path) < 0 && errno != ENOENT)
i_fatal("unlink(%s) failed: %m", path);
expected_mtime = 0;
for (method = 0; method < NFS_CACHE_FLUSH_METHOD_COUNT; ) {
/* stat() a couple of to make sure it gets cached */
if (stat(path, &st) == 0 ||
stat(path, &st) == 0 ||
stat(path, &st) == 0) {
i_error("stat() succeeded, can't continue this test");
break;
}
send_cmd(socket_fd, '2');
wait_cmd(socket_fd, '3');
flush_path = method == NFS_CACHE_FLUSH_METHOD_RMDIR ||
method == NFS_CACHE_FLUSH_METHOD_RMDIR_PARENT ?
path : dir;
nfs_cache_flush_before(flush_path, &fd, method);
success = stat(path, &st) == 0;
if (!success && errno != ENOENT)
i_fatal("stat(%s) failed: %m", path);
nfs_cache_flush_after(flush_path, &fd, method);
printf("Negative file handle cache flush %s: %s\n",
nfs_cache_flush_method_names[method],
!success ? "failed" : "OK");
if (success && st.st_mtime != expected_mtime)
printf(" - mtime is wrong though\n");
expected_mtime++;
method++;
if (unlink(path) < 0 && errno != ENOENT)
i_fatal("unlink(%s) failed: %m", path);
send_cmd(socket_fd, '4');
wait_cmd(socket_fd, '5');
}
send_cmd(socket_fd, '6');
close(fd);
wait_cmd(socket_fd, '!');
}
static void nfs_test_data_cache_server(int socket_fd, const char *path)
{
struct timeval tv[2];
char buf[1024], cmd;
int fd;
memset(buf, 'a', sizeof(buf));
tv[0].tv_sec = time(NULL);
tv[0].tv_usec = 12345;
tv[1] = tv[0];
fd = nfs_safe_create(path, O_RDWR | O_CREAT | O_TRUNC, 0600);
if (fd < 0)
i_fatal("creat(%s) failed: %m", path);
if (write(fd, buf, 1024) != 1024)
i_fatal("write(%s) failed: %m", path);
nfs_cache_flush_after(path, &fd, NFS_CACHE_FLUSH_METHOD_FSYNC);
send_cmd(socket_fd, '1');
wait_cmd(socket_fd, '2');
cmd = 'b';
do {
/* keep mtime same all the time, so it doesn't affect checking.
use utimes() instead of utime() to make sure microseconds are
also reset (hopefully also resets nanoseconds) */
tv[1].tv_sec++;
if (utimes(path, tv) < 0)
i_fatal("utimes(%s) failed: %m", path);
send_cmd(socket_fd, '3');
wait_cmd(socket_fd, '4');
if (lseek(fd, 512, SEEK_SET) < 0)
i_fatal("lseek() failed: %m");
if (write(fd, &cmd, 1) != 1)
i_fatal("write(%s) failed: %m", path);
nfs_cache_flush_after(path, &fd, NFS_CACHE_FLUSH_METHOD_FSYNC);
if (utimes(path, tv) < 0)
i_fatal("utimes(%s) failed: %m", path);
send_cmd(socket_fd, cmd);
cmd = read_cmd(socket_fd);
} while (cmd != '5');
close(fd);
}
static void nfs_test_data_cache_client(int socket_fd, const char *path)
{
struct stat st;
char buf[1024], chr;
time_t mtime;
long mtime_nsecs;
int fd, ret, i, method;
printf("\nTesting data cache..\n");
send_cmd(socket_fd, 'D');
wait_cmd(socket_fd, '1');
fd = nfs_safe_open(path, O_RDWR);
if (fd < 0)
i_fatal("open(%s) failed: %m", path);
nfs_cache_flush_before(path, &fd, NFS_CACHE_FLUSH_METHOD_CLOSE_OPEN);
/* initial read, should work */
ret = read(fd, buf, sizeof(buf));
if (ret < 0)
i_fatal("read(%s) failed: %m", path);
if (ret == 0) {
i_error("data cache: Initial read failed to return everything");
return;
}
for (i = 0; i < ret; i++) {
if (buf[i] != 'a') {