void doconfigs() {
GHashTable* configs = get_configs();
GList* keys = g_hash_table_get_keys(configs);
g_list_foreach(keys, e8_print, NULL);
g_list_free(keys);
g_hash_table_destroy(configs);
}
const char * get_value(char* key) {
int count;
if (config.size == 0) {
get_configs();
}
if (config.size == 0) {
fprintf(LOGFILE, "Invalid configuration provided\n");
return NULL;
}
for (count = 0; count < config.size; count++) {
if (strcmp(config.confdetails[count]->key, key) == 0) {
return config.confdetails[count]->value;
}
}
return NULL;
}
int main(int argc, char **argv) {
char *src, *target = NULL, *hw;
struct timeval tv;
gettimeofday(&tv, NULL);
srand(tv.tv_usec);
take_lock();
signal(SIGSEGV,sighandler);
signal(SIGKILL,sighandler);
signal(SIGTERM,sighandler);
signal(SIGSEGV,sighandler);
signal(SIGALRM,sighandler);
alarm(10);
src = getenv("INTERFACE");
if (!src)
goto out_unlock;
configs = get_configs();
hw = get_hwaddr(src);
if (!hw)
goto out_unlock;
// target = get_config_by_hwaddr(hw, src);
if (!target) {
char *path = NULL;
char *contents = NULL;
if (asprintf(&path, "/sys/class/net/%s/ifindex", src) == -1)
goto out_unlock ;
g_file_get_contents(path, &contents, NULL, NULL);
free(path);
printf("eth%u", atoi(contents) - 2);
}
out_unlock:
unlink(LOCKFILE);
exit(0);
}
/*
* Given a list of directories to search, find all pools stored on disk. This
* includes partial pools which are not available to import. If no args are
* given (argc is 0), then the default directory (/dev/dsk) is searched.
* poolname or guid (but not both) are provided by the caller when trying
* to import a specific pool.
*/
static nvlist_t *
zpool_find_import_impl(libzfs_handle_t *hdl, importargs_t *iarg)
{
int i, dirs = iarg->paths;
struct dirent *dp;
char path[MAXPATHLEN];
char *end, **dir = iarg->path;
size_t pathleft;
nvlist_t *ret = NULL;
pool_list_t pools = { 0 };
pool_entry_t *pe, *penext;
vdev_entry_t *ve, *venext;
config_entry_t *ce, *cenext;
name_entry_t *ne, *nenext;
avl_tree_t slice_cache;
rdsk_node_t *slice;
void *cookie;
verify(iarg->poolname == NULL || iarg->guid == 0);
if (dirs == 0) {
#ifdef HAVE_LIBBLKID
/* Use libblkid to scan all device for their type */
if (zpool_find_import_blkid(hdl, &pools) == 0)
goto skip_scanning;
(void) zfs_error_fmt(hdl, EZFS_BADCACHE,
dgettext(TEXT_DOMAIN, "blkid failure falling back "
"to manual probing"));
#endif /* HAVE_LIBBLKID */
dir = zpool_default_import_path;
dirs = DEFAULT_IMPORT_PATH_SIZE;
}
/*
* Go through and read the label configuration information from every
* possible device, organizing the information according to pool GUID
* and toplevel GUID.
*/
for (i = 0; i < dirs; i++) {
taskq_t *t;
char rdsk[MAXPATHLEN];
int dfd;
boolean_t config_failed = B_FALSE;
DIR *dirp;
/* use realpath to normalize the path */
if (realpath(dir[i], path) == 0) {
/* it is safe to skip missing search paths */
if (errno == ENOENT)
continue;
zfs_error_aux(hdl, strerror(errno));
(void) zfs_error_fmt(hdl, EZFS_BADPATH,
dgettext(TEXT_DOMAIN, "cannot open '%s'"), dir[i]);
goto error;
}
end = &path[strlen(path)];
*end++ = '/';
*end = 0;
pathleft = &path[sizeof (path)] - end;
/*
* Using raw devices instead of block devices when we're
* reading the labels skips a bunch of slow operations during
* close(2) processing, so we replace /dev/dsk with /dev/rdsk.
*/
if (strcmp(path, ZFS_DISK_ROOTD) == 0)
(void) strlcpy(rdsk, ZFS_RDISK_ROOTD, sizeof (rdsk));
else
(void) strlcpy(rdsk, path, sizeof (rdsk));
if ((dfd = open(rdsk, O_RDONLY)) < 0 ||
(dirp = fdopendir(dfd)) == NULL) {
if (dfd >= 0)
(void) close(dfd);
zfs_error_aux(hdl, strerror(errno));
(void) zfs_error_fmt(hdl, EZFS_BADPATH,
dgettext(TEXT_DOMAIN, "cannot open '%s'"),
rdsk);
goto error;
}
avl_create(&slice_cache, slice_cache_compare,
sizeof (rdsk_node_t), offsetof(rdsk_node_t, rn_node));
/*
* This is not MT-safe, but we have no MT consumers of libzfs
*/
while ((dp = readdir(dirp)) != NULL) {
const char *name = dp->d_name;
if (name[0] == '.' &&
(name[1] == 0 || (name[1] == '.' && name[2] == 0)))
continue;
slice = zfs_alloc(hdl, sizeof (rdsk_node_t));
slice->rn_name = zfs_strdup(hdl, name);
slice->rn_avl = &slice_cache;
slice->rn_dfd = dfd;
slice->rn_hdl = hdl;
slice->rn_nozpool = B_FALSE;
avl_add(&slice_cache, slice);
}
/*
* create a thread pool to do all of this in parallel;
* rn_nozpool is not protected, so this is racy in that
* multiple tasks could decide that the same slice can
* not hold a zpool, which is benign. Also choose
* double the number of processors; we hold a lot of
* locks in the kernel, so going beyond this doesn't
* buy us much.
*/
t = taskq_create("z_import", 2 * max_ncpus, defclsyspri,
2 * max_ncpus, INT_MAX, TASKQ_PREPOPULATE);
for (slice = avl_first(&slice_cache); slice;
(slice = avl_walk(&slice_cache, slice,
AVL_AFTER)))
(void) taskq_dispatch(t, zpool_open_func, slice,
TQ_SLEEP);
taskq_wait(t);
taskq_destroy(t);
cookie = NULL;
while ((slice = avl_destroy_nodes(&slice_cache,
&cookie)) != NULL) {
if (slice->rn_config != NULL && !config_failed) {
nvlist_t *config = slice->rn_config;
boolean_t matched = B_TRUE;
if (iarg->poolname != NULL) {
char *pname;
matched = nvlist_lookup_string(config,
ZPOOL_CONFIG_POOL_NAME,
&pname) == 0 &&
strcmp(iarg->poolname, pname) == 0;
} else if (iarg->guid != 0) {
uint64_t this_guid;
matched = nvlist_lookup_uint64(config,
ZPOOL_CONFIG_POOL_GUID,
&this_guid) == 0 &&
iarg->guid == this_guid;
}
if (!matched) {
nvlist_free(config);
} else {
/*
* use the non-raw path for the config
*/
(void) strlcpy(end, slice->rn_name,
pathleft);
if (add_config(hdl, &pools, path, i+1,
slice->rn_num_labels, config) != 0)
config_failed = B_TRUE;
}
}
free(slice->rn_name);
free(slice);
}
avl_destroy(&slice_cache);
(void) closedir(dirp);
if (config_failed)
goto error;
}
#ifdef HAVE_LIBBLKID
skip_scanning:
#endif
ret = get_configs(hdl, &pools, iarg->can_be_active, iarg->policy);
error:
for (pe = pools.pools; pe != NULL; pe = penext) {
penext = pe->pe_next;
for (ve = pe->pe_vdevs; ve != NULL; ve = venext) {
venext = ve->ve_next;
for (ce = ve->ve_configs; ce != NULL; ce = cenext) {
cenext = ce->ce_next;
if (ce->ce_config)
nvlist_free(ce->ce_config);
free(ce);
}
free(ve);
}
free(pe);
}
for (ne = pools.names; ne != NULL; ne = nenext) {
nenext = ne->ne_next;
free(ne->ne_name);
free(ne);
}
return (ret);
}
// THIS FUNCTION NEEDS TO BE BROKEN UP INTO SMALLER PIECES!
void build_erlang(gchar* repo, gchar* tag, gchar* id, gchar* build_config) {
// check to see if the ID has already been used
GHashTable* otps = get_erlangs();
gboolean has_otp = g_hash_table_contains(otps, id);
g_hash_table_destroy(otps);
if(has_otp) {
g_error("A version of Erlang already exists with this id: %s\n", id);
}
// check to see if the repo exists
GHashTable* repos = get_repos();
gboolean has_repo = g_hash_table_contains(repos, repo);
g_hash_table_destroy(repos);
if(!has_repo) {
g_error("Unconfigured repo: %s\n", repo);
}
// check for a valid build config if one is specified
GHashTable* configs = get_configs();
if(build_config) {
if(!g_hash_table_contains(configs, build_config)) {
g_hash_table_destroy(configs);
g_error("Unconfigured build config: %s\n", build_config);
}
} else {
// check the default
GHashTable* e8 = get_erln8();
if(g_hash_table_contains(e8, "default_config")) {
build_config = strdup((gchar*)g_hash_table_lookup(e8, "default_config"));
printf("%sUsing default config %s%s\n", build_config, yellow(), color_reset());
}
g_hash_table_destroy(e8);
}
gchar pattern[] = "/tmp/erln8.buildXXXXXX";
gchar* tmp = g_mkdtemp(pattern);
g_debug("building in %s\n", tmp);
gchar* output_root = get_config_subdir_file_name("otps",id);
gchar* output_path = g_strconcat(output_root, "/dist", NULL);
gchar* source_path = get_config_subdir_file_name("repos", repo);
GTimeVal t;
g_get_current_time(&t);
gchar* ts = g_time_val_to_iso8601(&t);
gchar* ld = g_strconcat("logs/build_", id, "_", ts, NULL);
gchar* log_path = get_configdir_file_name(ld);
// check that the branch or tag exists in the specified repo
gchar* check_obj = g_strconcat("cd ", source_path, "&& git show-ref ", tag, " > /dev/null", NULL);
if(system(check_obj) != 0) {
g_free(check_obj);
g_error("branch or tag %s does not exist in %s Git repo\n",
tag,
repo);
}
g_free(check_obj);
/// check that the repo has been cloned
if(!g_file_test(source_path, G_FILE_TEST_EXISTS |
G_FILE_TEST_IS_REGULAR)) {
g_error("Missing repo for %s, which should be in %s.\nDid you forget to `erln8 --clone <repo_name>?`\n", repo, source_path);
}
gchar* bc = NULL;
gchar* env = NULL;
if(build_config != NULL) {
bc = (gchar*)g_hash_table_lookup(configs, build_config);
// don't drop a NULL into the middle of the command string
if(bc == NULL) {
bc = "";
} else {
gchar* env_name = g_strconcat(build_config, "_env", NULL);
env = (gchar*)g_hash_table_lookup(configs, env_name);
if(env == NULL) {
env = "";
}
g_free(env_name);
}
} else {
if(env == NULL) {
env = "";
}
}
g_free(ld);
g_debug("Output path = %s\n", output_path);
g_debug("Source path = %s\n", source_path);
g_debug("Log path = %s\n", log_path);
printf("Building %s from tag/branch %s of repo %s\n", id, tag, repo);
printf("Custom build config: %s\n", bc);
printf("Custom build env: %s\n", env);
printf("Build log: %s\n", log_path);
gchar* buildcmd0 = g_strconcat(env,
" cd ",
source_path,
" && git archive ",
tag,
" | (cd ", tmp, "; tar -f - -x)", NULL);
gchar* buildcmd1 = g_strconcat(env, " cd ", tmp,
" && ./otp_build autoconf > ", log_path, " 2>&1", NULL);
gchar* buildcmd2 = g_strconcat(env, " cd ", tmp,
" && ./configure --prefix=", output_path," ",
bc == NULL ? "" : bc,
" >> ", log_path, " 2>&1",
NULL);
gchar* buildcmd3 = g_strconcat(env, " cd ", tmp,
" && make >> ", log_path, " 2>&1", NULL);
gchar* buildcmd4 = g_strconcat(env, " cd ", tmp,
" && make install >> ", log_path, " 2>&1", NULL);
gchar* build_cmds[] = {
buildcmd0,
buildcmd1,
buildcmd2,
buildcmd3,
buildcmd4,
NULL
};
int result = 0;
int i = 0;
for(i = 0; i < step_count; i++) {
show_build_progress(i, result);
if(result != 0) {
g_debug("STATUS = %d\n", result);
printf("Here are the last 10 lines of the log file:\n");
gchar* tail = g_strconcat("tail -10 ", log_path, NULL);
int tailresult = system(tail);
if(tailresult != 0) {
g_error("Cannot run tail -10 on %s\n", log_path);
}
g_free(tail);
printf("---------------------------------------------------------\n");
g_error("Build error, please check the build logs for more details\n");
}
g_debug("running %s\n", build_cmds[i]);
if(!opt_dryrun) {
result = system(build_cmds[i]);
} else {
result = 0;
printf("%s\n", build_cmds[i]);
}
}
show_build_progress(step_count, result);
printf("Registering Erlang installation\n");
if(!opt_dryrun) {
set_config_kv("Erlangs", id, output_root);
}
printf("Generating links\n");
setup_binaries(id);
printf("%sBuild complete%s\n", green(), color_reset() );
g_free(buildcmd0);
g_free(buildcmd1);
g_free(buildcmd2);
g_free(buildcmd3);
g_free(buildcmd4);
g_free(log_path);
g_free(source_path);
g_free(output_path);
g_free(output_root);
// destroy close to the end so the string isn't freed before it's used
g_hash_table_destroy(configs);
}
/*
* Given a list of directories to search, find all pools stored on disk. This
* includes partial pools which are not available to import. If no args are
* given (argc is 0), then the default directory (/dev/dsk) is searched.
* poolname or guid (but not both) are provided by the caller when trying
* to import a specific pool.
*/
static nvlist_t *
zpool_find_import_impl(libzfs_handle_t *hdl, importargs_t *iarg)
{
int i, num_labels, dirs = iarg->paths;
DIR *dirp = NULL;
struct dirent *dp;
char path[MAXPATHLEN];
char *end, **dir = iarg->path;
size_t pathleft;
struct stat statbuf;
nvlist_t *ret = NULL, *config;
int fd;
pool_list_t pools = { 0 };
pool_entry_t *pe, *penext;
vdev_entry_t *ve, *venext;
config_entry_t *ce, *cenext;
name_entry_t *ne, *nenext;
verify(iarg->poolname == NULL || iarg->guid == 0);
if (dirs == 0) {
#ifdef HAVE_LIBBLKID
/* Use libblkid to scan all device for their type */
if (zpool_find_import_blkid(hdl, &pools) == 0)
goto skip_scanning;
(void) zfs_error_fmt(hdl, EZFS_BADCACHE,
dgettext(TEXT_DOMAIN, "blkid failure falling back "
"to manual probing"));
#endif /* HAVE_LIBBLKID */
dir = zpool_default_import_path;
dirs = DEFAULT_IMPORT_PATH_SIZE;
}
/*
* Go through and read the label configuration information from every
* possible device, organizing the information according to pool GUID
* and toplevel GUID.
*/
for (i = 0; i < dirs; i++) {
char *rdsk;
int dfd;
/* use realpath to normalize the path */
if (realpath(dir[i], path) == 0) {
/* it is safe to skip missing search paths */
if (errno == ENOENT)
continue;
zfs_error_aux(hdl, strerror(errno));
(void) zfs_error_fmt(hdl, EZFS_BADPATH,
dgettext(TEXT_DOMAIN, "cannot open '%s'"), dir[i]);
goto error;
}
end = &path[strlen(path)];
*end++ = '/';
*end = 0;
pathleft = &path[sizeof (path)] - end;
/*
* Using raw devices instead of block devices when we're
* reading the labels skips a bunch of slow operations during
* close(2) processing, so we replace /dev/dsk with /dev/rdsk.
*/
if (strcmp(path, "/dev/dsk/") == 0)
rdsk = "/dev/rdsk/";
else
rdsk = path;
if ((dfd = open(rdsk, O_RDONLY)) < 0 ||
(dirp = fdopendir(dfd)) == NULL) {
zfs_error_aux(hdl, strerror(errno));
(void) zfs_error_fmt(hdl, EZFS_BADPATH,
dgettext(TEXT_DOMAIN, "cannot open '%s'"),
rdsk);
goto error;
}
/*
* This is not MT-safe, but we have no MT consumers of libzfs
*/
while ((dp = readdir(dirp)) != NULL) {
const char *name = dp->d_name;
if (name[0] == '.' &&
(name[1] == 0 || (name[1] == '.' && name[2] == 0)))
continue;
/*
* Skip checking devices with well known prefixes:
* watchdog - A special close is required to avoid
* triggering it and resetting the system.
* fuse - Fuse control device.
* ppp - Generic PPP driver.
* tty* - Generic serial interface.
* vcs* - Virtual console memory.
* parport* - Parallel port interface.
* lp* - Printer interface.
* fd* - Floppy interface.
* hpet - High Precision Event Timer, crashes qemu
* when accessed from a virtual machine.
* core - Symlink to /proc/kcore, causes a crash
* when access from Xen dom0.
*/
if ((strncmp(name, "watchdog", 8) == 0) ||
(strncmp(name, "fuse", 4) == 0) ||
(strncmp(name, "ppp", 3) == 0) ||
(strncmp(name, "tty", 3) == 0) ||
(strncmp(name, "vcs", 3) == 0) ||
(strncmp(name, "parport", 7) == 0) ||
(strncmp(name, "lp", 2) == 0) ||
(strncmp(name, "fd", 2) == 0) ||
(strncmp(name, "hpet", 4) == 0) ||
#ifdef __APPLE__
(strncmp(name, "pty", 3) == 0) || // lots, skip for speed
(strncmp(name, "com", 3) == 0) || // /dev/com_digidesign_semiface
#endif
(strncmp(name, "core", 4) == 0))
continue;
/*
* Ignore failed stats. We only want regular
* files and block devices.
*/
if ((fstatat64(dfd, name, &statbuf, 0) != 0) ||
(!S_ISREG(statbuf.st_mode) &&
!S_ISBLK(statbuf.st_mode)))
continue;
#ifdef __APPLE__
/* It is desirable to skip optical media as well, as they are
* also called /dev/diskX
*/
if (is_optical_media((char *)name))
continue;
#endif
if ((fd = openat64(dfd, name, O_RDONLY)) < 0)
continue;
int32_t blksz = 0;
if (S_ISBLK(statbuf.st_mode) &&
(ioctl(fd, DKIOCGETBLOCKSIZE, &blksz) || blksz == 0)) {
if (strncmp(name, "vn", 2) != 0)
fprintf(stderr, "device '%s' failed to report blocksize -- skipping\r\n",
name);
close(fd);
continue;
}
#ifdef __APPLE__
struct sigaction sact;
sigemptyset(&sact.sa_mask);
sact.sa_flags = 0;
sact.sa_handler = signal_alarm;
sigaction(SIGALRM, &sact, NULL);
if (setjmp(buffer) != 0) {
printf("ZFS: Warning, timeout reading device '%s'\n", name);
close(fd);
continue;
}
alarm(20);
#endif
if ((zpool_read_label(fd, &config, NULL)) != 0) {
#ifdef __APPLE__
alarm(0);
#endif
(void) close(fd);
(void) no_memory(hdl);
goto error;
}
#ifdef __APPLE__
alarm(0);
#endif
(void) close(fd);
if (config != NULL) {
boolean_t matched = B_TRUE;
char *pname;
if ((iarg->poolname != NULL) &&
(nvlist_lookup_string(config,
ZPOOL_CONFIG_POOL_NAME, &pname) == 0)) {
if (strcmp(iarg->poolname, pname))
matched = B_FALSE;
} else if (iarg->guid != 0) {
uint64_t this_guid;
matched = nvlist_lookup_uint64(config,
ZPOOL_CONFIG_POOL_GUID,
&this_guid) == 0 &&
iarg->guid == this_guid;
}
if (!matched) {
nvlist_free(config);
config = NULL;
continue;
}
/* use the non-raw path for the config */
(void) strlcpy(end, name, pathleft);
if (add_config(hdl, &pools, path, i+1,
num_labels, config))
goto error;
}
}
(void) closedir(dirp);
dirp = NULL;
}
#ifdef HAVE_LIBBLKID
skip_scanning:
#endif
ret = get_configs(hdl, &pools, iarg->can_be_active);
error:
for (pe = pools.pools; pe != NULL; pe = penext) {
penext = pe->pe_next;
for (ve = pe->pe_vdevs; ve != NULL; ve = venext) {
venext = ve->ve_next;
for (ce = ve->ve_configs; ce != NULL; ce = cenext) {
cenext = ce->ce_next;
if (ce->ce_config)
nvlist_free(ce->ce_config);
free(ce);
}
free(ve);
}
free(pe);
}
for (ne = pools.names; ne != NULL; ne = nenext) {
nenext = ne->ne_next;
if (ne->ne_name)
free(ne->ne_name);
free(ne);
}
if (dirp)
(void) closedir(dirp);
return (ret);
}
/*
* Given a list of directories to search, find all pools stored on disk. This
* includes partial pools which are not available to import. If no args are
* given (argc is 0), then the default directory (/dev/dsk) is searched.
* poolname or guid (but not both) are provided by the caller when trying
* to import a specific pool.
*/
static nvlist_t *
zpool_find_import_impl(libzfs_handle_t *hdl, importargs_t *iarg)
{
int i, dirs = iarg->paths;
struct dirent64 *dp;
char path[MAXPATHLEN];
char *end, **dir = iarg->path;
size_t pathleft;
nvlist_t *ret = NULL;
static char *default_dir = "/dev/dsk";
pool_list_t pools = { 0 };
pool_entry_t *pe, *penext;
vdev_entry_t *ve, *venext;
config_entry_t *ce, *cenext;
name_entry_t *ne, *nenext;
avl_tree_t slice_cache;
rdsk_node_t *slice;
void *cookie;
if (dirs == 0) {
dirs = 1;
dir = &default_dir;
}
/*
* Go through and read the label configuration information from every
* possible device, organizing the information according to pool GUID
* and toplevel GUID.
*/
for (i = 0; i < dirs; i++) {
tpool_t *t;
char *rdsk;
int dfd;
boolean_t config_failed = B_FALSE;
DIR *dirp;
/* use realpath to normalize the path */
if (realpath(dir[i], path) == 0) {
(void) zfs_error_fmt(hdl, EZFS_BADPATH,
dgettext(TEXT_DOMAIN, "cannot open '%s'"), dir[i]);
goto error;
}
end = &path[strlen(path)];
*end++ = '/';
*end = 0;
pathleft = &path[sizeof (path)] - end;
/*
* Using raw devices instead of block devices when we're
* reading the labels skips a bunch of slow operations during
* close(2) processing, so we replace /dev/dsk with /dev/rdsk.
*/
if (strcmp(path, "/dev/dsk/") == 0)
rdsk = "/dev/rdsk/";
else
rdsk = path;
if ((dfd = open64(rdsk, O_RDONLY)) < 0 ||
(dirp = fdopendir(dfd)) == NULL) {
if (dfd >= 0)
(void) close(dfd);
zfs_error_aux(hdl, strerror(errno));
(void) zfs_error_fmt(hdl, EZFS_BADPATH,
dgettext(TEXT_DOMAIN, "cannot open '%s'"),
rdsk);
goto error;
}
avl_create(&slice_cache, slice_cache_compare,
sizeof (rdsk_node_t), offsetof(rdsk_node_t, rn_node));
/*
* This is not MT-safe, but we have no MT consumers of libzfs
*/
while ((dp = readdir64(dirp)) != NULL) {
const char *name = dp->d_name;
if (name[0] == '.' &&
(name[1] == 0 || (name[1] == '.' && name[2] == 0)))
continue;
slice = zfs_alloc(hdl, sizeof (rdsk_node_t));
slice->rn_name = zfs_strdup(hdl, name);
slice->rn_avl = &slice_cache;
slice->rn_dfd = dfd;
slice->rn_hdl = hdl;
slice->rn_nozpool = B_FALSE;
avl_add(&slice_cache, slice);
}
/*
* create a thread pool to do all of this in parallel;
* rn_nozpool is not protected, so this is racy in that
* multiple tasks could decide that the same slice can
* not hold a zpool, which is benign. Also choose
* double the number of processors; we hold a lot of
* locks in the kernel, so going beyond this doesn't
* buy us much.
*/
t = tpool_create(1, 2 * sysconf(_SC_NPROCESSORS_ONLN),
0, NULL);
for (slice = avl_first(&slice_cache); slice;
(slice = avl_walk(&slice_cache, slice,
AVL_AFTER)))
(void) tpool_dispatch(t, zpool_open_func, slice);
tpool_wait(t);
tpool_destroy(t);
cookie = NULL;
while ((slice = avl_destroy_nodes(&slice_cache,
&cookie)) != NULL) {
if (slice->rn_config != NULL && !config_failed) {
nvlist_t *config = slice->rn_config;
boolean_t matched = B_TRUE;
if (iarg->poolname != NULL) {
char *pname;
matched = nvlist_lookup_string(config,
ZPOOL_CONFIG_POOL_NAME,
&pname) == 0 &&
strcmp(iarg->poolname, pname) == 0;
} else if (iarg->guid != 0) {
uint64_t this_guid;
matched = nvlist_lookup_uint64(config,
ZPOOL_CONFIG_POOL_GUID,
&this_guid) == 0 &&
iarg->guid == this_guid;
}
if (!matched) {
nvlist_free(config);
} else {
/*
* use the non-raw path for the config
*/
(void) strlcpy(end, slice->rn_name,
pathleft);
if (add_config(hdl, &pools, path,
config) != 0)
config_failed = B_TRUE;
}
}
free(slice->rn_name);
free(slice);
}
avl_destroy(&slice_cache);
(void) closedir(dirp);
if (config_failed)
goto error;
}
ret = get_configs(hdl, &pools, iarg->can_be_active);
error:
for (pe = pools.pools; pe != NULL; pe = penext) {
penext = pe->pe_next;
for (ve = pe->pe_vdevs; ve != NULL; ve = venext) {
venext = ve->ve_next;
for (ce = ve->ve_configs; ce != NULL; ce = cenext) {
cenext = ce->ce_next;
if (ce->ce_config)
nvlist_free(ce->ce_config);
free(ce);
}
free(ve);
}
free(pe);
}
for (ne = pools.names; ne != NULL; ne = nenext) {
nenext = ne->ne_next;
free(ne->ne_name);
free(ne);
}
return (ret);
}
/*
* Given a list of directories to search, find all pools stored on disk. This
* includes partial pools which are not available to import. If no args are
* given (argc is 0), then the default directory (/dev/dsk) is searched.
* poolname or guid (but not both) are provided by the caller when trying
* to import a specific pool.
*/
static nvlist_t *
zpool_find_import_impl(libzfs_handle_t *hdl, importargs_t *iarg)
{
int i, dirs = iarg->paths;
DIR *dirp = NULL;
struct dirent64 *dp;
char path[MAXPATHLEN];
char *end, **dir = iarg->path;
size_t pathleft;
struct stat64 statbuf;
nvlist_t *ret = NULL, *config;
static char *default_dir = DISK_ROOT;
int fd;
pool_list_t pools = { 0 };
pool_entry_t *pe, *penext;
vdev_entry_t *ve, *venext;
config_entry_t *ce, *cenext;
name_entry_t *ne, *nenext;
verify(iarg->poolname == NULL || iarg->guid == 0);
if (dirs == 0) {
#ifdef HAVE_LIBBLKID
/* Use libblkid to scan all device for their type */
if (zpool_find_import_blkid(hdl, &pools) == 0)
goto skip_scanning;
(void) zfs_error_fmt(hdl, EZFS_BADCACHE,
dgettext(TEXT_DOMAIN, "blkid failure falling back "
"to manual probing"));
#endif /* HAVE_LIBBLKID */
dirs = 1;
dir = &default_dir;
}
/*
* Go through and read the label configuration information from every
* possible device, organizing the information according to pool GUID
* and toplevel GUID.
*/
for (i = 0; i < dirs; i++) {
char *rdsk;
int dfd;
/* use realpath to normalize the path */
if (realpath(dir[i], path) == 0) {
(void) zfs_error_fmt(hdl, EZFS_BADPATH,
dgettext(TEXT_DOMAIN, "cannot open '%s'"), dir[i]);
goto error;
}
end = &path[strlen(path)];
*end++ = '/';
*end = 0;
pathleft = &path[sizeof (path)] - end;
/*
* Using raw devices instead of block devices when we're
* reading the labels skips a bunch of slow operations during
* close(2) processing, so we replace /dev/dsk with /dev/rdsk.
*/
if (strcmp(path, "/dev/dsk/") == 0)
rdsk = "/dev/rdsk/";
else
rdsk = path;
if ((dfd = open64(rdsk, O_RDONLY)) < 0 ||
(dirp = fdopendir(dfd)) == NULL) {
zfs_error_aux(hdl, strerror(errno));
(void) zfs_error_fmt(hdl, EZFS_BADPATH,
dgettext(TEXT_DOMAIN, "cannot open '%s'"),
rdsk);
goto error;
}
/*
* This is not MT-safe, but we have no MT consumers of libzfs
*/
while ((dp = readdir64(dirp)) != NULL) {
const char *name = dp->d_name;
if (name[0] == '.' &&
(name[1] == 0 || (name[1] == '.' && name[2] == 0)))
continue;
/*
* Skip checking devices with well known prefixes:
* watchdog - A special close is required to avoid
* triggering it and resetting the system.
* fuse - Fuse control device.
* ppp - Generic PPP driver.
* tty* - Generic serial interface.
* vcs* - Virtual console memory.
* parport* - Parallel port interface.
* lp* - Printer interface.
* fd* - Floppy interface.
* hpet - High Precision Event Timer, crashes qemu
* when accessed from a virtual machine.
* core - Symlink to /proc/kcore, causes a crash
* when access from Xen dom0.
*/
if ((strncmp(name, "watchdog", 8) == 0) ||
(strncmp(name, "fuse", 4) == 0) ||
(strncmp(name, "ppp", 3) == 0) ||
(strncmp(name, "tty", 3) == 0) ||
(strncmp(name, "vcs", 3) == 0) ||
(strncmp(name, "parport", 7) == 0) ||
(strncmp(name, "lp", 2) == 0) ||
(strncmp(name, "fd", 2) == 0) ||
(strncmp(name, "hpet", 4) == 0) ||
(strncmp(name, "core", 4) == 0))
continue;
/*
* Ignore failed stats. We only want regular
* files and block devices.
*/
if ((fstatat64(dfd, name, &statbuf, 0) != 0) ||
(!S_ISREG(statbuf.st_mode) &&
!S_ISBLK(statbuf.st_mode)))
continue;
if ((fd = openat64(dfd, name, O_RDONLY)) < 0)
continue;
if ((zpool_read_label(fd, &config)) != 0) {
(void) close(fd);
(void) no_memory(hdl);
goto error;
}
(void) close(fd);
if (config != NULL) {
boolean_t matched = B_TRUE;
if (iarg->poolname != NULL) {
char *pname;
matched = nvlist_lookup_string(config,
ZPOOL_CONFIG_POOL_NAME,
&pname) == 0 &&
strcmp(iarg->poolname, pname) == 0;
} else if (iarg->guid != 0) {
uint64_t this_guid;
matched = nvlist_lookup_uint64(config,
ZPOOL_CONFIG_POOL_GUID,
&this_guid) == 0 &&
iarg->guid == this_guid;
}
if (!matched) {
nvlist_free(config);
config = NULL;
continue;
}
/* use the non-raw path for the config */
(void) strlcpy(end, name, pathleft);
if (add_config(hdl, &pools, path, config) != 0)
goto error;
}
}
(void) closedir(dirp);
dirp = NULL;
}
#ifdef HAVE_LIBBLKID
skip_scanning:
#endif
ret = get_configs(hdl, &pools, iarg->can_be_active);
error:
for (pe = pools.pools; pe != NULL; pe = penext) {
penext = pe->pe_next;
for (ve = pe->pe_vdevs; ve != NULL; ve = venext) {
venext = ve->ve_next;
for (ce = ve->ve_configs; ce != NULL; ce = cenext) {
cenext = ce->ce_next;
if (ce->ce_config)
nvlist_free(ce->ce_config);
free(ce);
}
free(ve);
}
free(pe);
}
for (ne = pools.names; ne != NULL; ne = nenext) {
nenext = ne->ne_next;
if (ne->ne_name)
free(ne->ne_name);
free(ne);
}
if (dirp)
(void) closedir(dirp);
return (ret);
}
