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Fix container-executor 

Signed-off-by: Akira Ajisaka <aajisaka@apache.org>
(cherry picked from commit 9c7b8cf54e)
This commit is contained in:
Hideyuki Furue 2021-06-02 19:56:38 +09:00 committed by Akira Ajisaka
parent 20a4cb0c67
commit f5568e15d0
No known key found for this signature in database
GPG Key ID: C1EDBB9CA400FD50
5 changed files with 144 additions and 30 deletions
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118
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/impl/container-executor.c
View File

@ -47,6 +47,10 @@
#include <sys/wait.h>
#include <getopt.h>
#include <sys/param.h>
#ifdef __linux
#include <sys/vfs.h>
#include <linux/magic.h>
#endif
#ifndef HAVE_FCHMODAT
#include "compat/fchmodat.h"
@ -222,6 +226,19 @@ static int write_pid_to_cgroup_as_root(const char* cgroup_file, pid_t pid) {
goto cleanup;
}
// statfs
struct statfs buf;
if (statfs(cgroup_file, &buf) == -1) {
fprintf(LOGFILE, "Can't statfs file %s as node manager - %s\n", cgroup_file,
strerror(errno));
rc = -1;
goto cleanup;
} else if (buf.f_type != CGROUP_SUPER_MAGIC) {
fprintf(LOGFILE, "Pid file %s is not located on cgroup filesystem\n", cgroup_file);
rc = -1;
goto cleanup;
}
// open
int cgroup_fd = open(cgroup_file, O_WRONLY | O_APPEND, 0);
if (cgroup_fd == -1) {
@ -499,27 +516,16 @@ int is_mount_cgroups_support_enabled() {
/**
* Utility function to concatenate argB to argA using the concat_pattern.
* For historical reasons, redundant argument numArgs exists.
*/
char *concatenate(char *concat_pattern, char *return_path_name,
int numArgs, ...) {
va_list ap;
va_start(ap, numArgs);
int strlen_args = 0;
char *arg = NULL;
int j;
for (j = 0; j < numArgs; j++) {
arg = va_arg(ap, char*);
if (arg == NULL) {
fprintf(LOGFILE, "One of the arguments passed for %s is null.\n",
return_path_name);
return NULL;
}
strlen_args += strlen(arg);
}
int str_len = vsnprintf(NULL, 0, concat_pattern, ap) + 1;
va_end(ap);
char *return_path = NULL;
int str_len = strlen(concat_pattern) + strlen_args + 1;
return_path = (char *) malloc(str_len);
if (return_path == NULL) {
@ -736,6 +742,10 @@ static int create_container_directories(const char* user, const char *app_id,
if (container_dir == NULL) {
return OUT_OF_MEMORY;
}
if (strstr(container_dir, "..") != 0) {
fprintf(LOGFILE, "Unsupported container directory path detected.\n");
return COULD_NOT_CREATE_WORK_DIRECTORIES;
}
if (mkdirs(container_dir, perms) == 0) {
result = 0;
}
@ -763,19 +773,26 @@ static int create_container_directories(const char* user, const char *app_id,
char *container_log_dir = get_app_log_directory(*log_dir_ptr, combined_name);
int check = check_nm_local_dir(nm_uid, *log_dir_ptr);
if (check != 0) {
container_log_dir = NULL;
}
if (strstr(container_log_dir, "..") != 0) {
fprintf(LOGFILE, "Unsupported container log directory path detected.\n");
container_log_dir = NULL;
free(container_log_dir);
free(combined_name);
return COULD_NOT_CREATE_APP_LOG_DIRECTORIES;
}
if (container_log_dir == NULL) {
free(combined_name);
return OUT_OF_MEMORY;
}
if (strstr(container_log_dir, "..") != 0) {
fprintf(LOGFILE, "Unsupported container log directory path detected.\n");
free(container_log_dir);
free(combined_name);
return COULD_NOT_CREATE_APP_LOG_DIRECTORIES;
} else if (mkdirs(container_log_dir, logdir_perms) != 0) {
free(container_log_dir);
} else {
result = 0;
if (chosen_container_log_dir != NULL) {
free(chosen_container_log_dir);
}
chosen_container_log_dir = strdup(container_log_dir);
free(container_log_dir);
}
@ -794,9 +811,18 @@ static int create_container_directories(const char* user, const char *app_id,
if (tmp_dir == NULL) {
return OUT_OF_MEMORY;
}
if (strstr(tmp_dir, "..") != 0) {
fprintf(ERRORFILE, "Unsupported tmp directory path detected.\n");
result = COULD_NOT_CREATE_TMP_DIRECTORIES;
goto cleanup;
}
if (mkdirs(tmp_dir, perms) == 0) {
result = 0;
}
cleanup:
free(tmp_dir);
return result;
@ -970,7 +996,7 @@ static int change_owner(const char* path, uid_t user, gid_t group) {
* return non-0 on failure
*/
int create_directory_for_user(const char* path) {
// set 2750 permissions and group sticky bit
// set 750 permissions and setgid bit
mode_t permissions = S_IRWXU | S_IRGRP | S_IXGRP | S_ISGID;
uid_t user = geteuid();
gid_t group = getegid();
@ -983,13 +1009,13 @@ int create_directory_for_user(const char* path) {
if (ret == 0) {
if (0 == mkdir(path, permissions) || EEXIST == errno) {
// need to reassert the group sticky bit
// need to reassert the setgid bit
if (change_owner(path, user, nm_gid) != 0) {
fprintf(LOGFILE, "Failed to chown %s to %d:%d: %s\n", path, user, nm_gid,
strerror(errno));
ret = -1;
} else if (chmod(path, permissions) != 0) {
fprintf(LOGFILE, "Can't chmod %s to add the sticky bit - %s\n",
fprintf(LOGFILE, "Can't chmod %s to add the setgid bit - %s\n",
path, strerror(errno));
ret = -1;
}
@ -1099,6 +1125,11 @@ int initialize_user(const char *user, char* const* local_dirs) {
fprintf(LOGFILE, "Couldn't get userdir directory for %s.\n", user);
failed = 1;
break;
// Avoid possible wrong validation. Username can contain double dots.
} else if (strstr(user_dir, "/../") != 0) {
fprintf(LOGFILE, "Unsupported userdir directory path detected.\n");
failed = 1;
break;
}
if (create_directory_for_user(user_dir) != 0) {
failed = 1;
@ -1120,6 +1151,9 @@ int create_log_dirs(const char *app_id, char * const * log_dirs) {
}
if (app_log_dir == NULL) {
// try the next one
} else if (strstr(app_log_dir, "..") != 0) {
fprintf(LOGFILE, "Unsupported app-log directory path detected.\n");
free(app_log_dir);
} else if (create_directory_for_user(app_log_dir) != 0) {
free(app_log_dir);
return -1;
@ -1188,7 +1222,11 @@ int create_container_log_dirs(const char *container_id, const char *app_id,
}
int result = check_nm_local_dir(nm_uid, *log_root);
if (result != 0 && container_log_dir != NULL) {
if (result != 0) {
free(container_log_dir);
container_log_dir = NULL;
continue;
} else if (strstr(container_log_dir, "..") != 0) {
fprintf(LOGFILE, "Unsupported container log directory path (%s) detected.\n",
container_log_dir);
free(container_log_dir);
@ -1233,6 +1271,9 @@ static char *create_app_dirs(const char *user,
char *app_dir = get_app_directory(*nm_root, user, app_id);
if (app_dir == NULL) {
// try the next one
} else if (strstr(app_dir, "..") != 0) {
fprintf(LOGFILE, "Unsupported app directory path detected.\n");
free(app_dir);
} else if (mkdirs(app_dir, permissions) != 0) {
free(app_dir);
} else if (primary_app_dir == NULL) {
@ -1299,7 +1340,7 @@ int initialize_app(const char *user, const char *app_id,
char *nmPrivate_credentials_file_copy = strdup(nmPrivate_credentials_file);
// TODO: FIXME. The user's copy of creds should go to a path selected by
// localDirAllocatoir
// localDirAllocator
char *cred_file_name = concatenate("%s/%s", "cred file", 2,
primary_app_dir, basename(nmPrivate_credentials_file_copy));
if (cred_file_name == NULL) {
@ -1406,14 +1447,14 @@ int create_script_paths(const char *work_dir,
int exit_code = -1;
*script_file_dest = get_container_launcher_file(work_dir);
if (script_file_dest == NULL) {
if (*script_file_dest == NULL) {
exit_code = OUT_OF_MEMORY;
fprintf(ERRORFILE, "Could not create script_file_dest\n");
return exit_code;
}
*cred_file_dest = get_container_credentials_file(work_dir);
if (NULL == cred_file_dest) {
if (NULL == *cred_file_dest) {
exit_code = OUT_OF_MEMORY;
fprintf(ERRORFILE, "Could not create cred_file_dest\n");
return exit_code;
@ -1526,6 +1567,12 @@ int create_user_filecache_dirs(const char * user, char* const* local_dirs) {
rc = INITIALIZE_USER_FAILED;
break;
}
if (strstr(filecache_dir, "..") != 0) {
fprintf(LOGFILE, "Unsupported filecache directory path detected.\n");
free(filecache_dir);
rc = INITIALIZE_USER_FAILED;
break;
}
if (0 != mkdir(filecache_dir, permissions) && EEXIST != errno) {
fprintf(LOGFILE, "Failed to create directory %s - %s\n", filecache_dir,
strerror(errno));
@ -1616,6 +1663,12 @@ int launch_docker_container_as_user(const char * user, const char *app_id,
docker_command_with_binary = flatten(docker_command);
if (docker_command_with_binary == NULL) {
fprintf (ERRORFILE, "Could not flatten docker command.\n");
exit_code = UNABLE_TO_EXECUTE_CONTAINER_SCRIPT;
goto cleanup;
}
// Launch container
pid_t child_pid = fork();
if (child_pid == -1) {
@ -2315,6 +2368,7 @@ int list_as_user(const char *target_dir) {
strerror(errno));
ret = -1;
}
closedir(dir);
} else {
fprintf(LOGFILE, "Could not open directory %s - %s\n", target_dir,
strerror(errno));
@ -2372,8 +2426,10 @@ int is_empty(char *target_dir) {
continue;
}
fprintf(LOGFILE, "Directory is not empty %s\n", target_dir);
closedir(dir);
return 0;
}
closedir(dir);
return 1;
}
@ -2400,7 +2456,7 @@ int mount_cgroup(const char *pair, const char *hierarchy) {
goto cleanup;
}
if (hierarchy == NULL || strstr(hierarchy, "..") != NULL) {
fprintf(LOGFILE, "Unsupported cgroup hierarhy path detected.\n");
fprintf(LOGFILE, "Unsupported cgroup hierarchy path detected.\n");
result = INVALID_COMMAND_PROVIDED;
goto cleanup;
}
@ -2421,8 +2477,13 @@ int mount_cgroup(const char *pair, const char *hierarchy) {
result = INVALID_COMMAND_PROVIDED;
goto cleanup;
}
if (strlen(mount_path) + strlen(hierarchy) + 2 > EXECUTOR_PATH_MAX) {
fprintf(LOGFILE, "cgroup hierarchy path is too long.\n");
result = INVALID_COMMAND_PROVIDED;
goto cleanup;
}
if (mount("none", mount_path, "cgroup", 0, controller) == 0) {
char *buf = stpncpy(hier_path, mount_path, strlen(mount_path));
char *buf = stpncpy(hier_path, mount_path, EXECUTOR_PATH_MAX);
*buf++ = '/';
snprintf(buf, EXECUTOR_PATH_MAX - (buf - hier_path), "%s", hierarchy);
@ -2535,6 +2596,9 @@ char* flatten(char **args) {
total = total + strlen(args[i]) + 1;
}
char *buffer = (char *) malloc(total * sizeof(char));
if (buffer == NULL) {
return NULL;
}
char *to = NULL;
to = buffer;
for (int i = 0; args[i] != NULL; i++) {

4
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/impl/main.c
View File

@ -69,8 +69,8 @@ static void display_usage(FILE *stream) {
fprintf(stream,
" container-executor <user> <yarn-user> <command> <command-args>\n"
" where command and command-args: \n" \
" initialize container: %2d appid tokens nm-local-dirs "
"nm-log-dirs cmd app...\n"
" initialize container: %2d appid containerid tokens nm-local-dirs "
"nm-log-dirs cmd...\n"
" launch container: %2d appid containerid workdir "
"container-script tokens pidfile nm-local-dirs nm-log-dirs resources ",
INITIALIZE_CONTAINER, LAUNCH_CONTAINER);

10
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/impl/util.c
View File

@ -25,6 +25,7 @@
char** split_delimiter(char *value, const char *delim) {
char **return_values = NULL;
char **new_return_values;
char *temp_tok = NULL;
char *tempstr = NULL;
int size = 0;
@ -57,8 +58,15 @@ char** split_delimiter(char *value, const char *delim) {
// Make sure returned values has enough space for the trailing NULL.
if (size >= return_values_size - 1) {
return_values_size += per_alloc_size;
return_values = (char **) realloc(return_values,(sizeof(char *) *
new_return_values = (char **) realloc(return_values,(sizeof(char *) *
return_values_size));
if (!new_return_values) {
fprintf(ERRORFILE, "Reallocation error for return_values in %s.\n",
__func__);
failed = 1;
goto cleanup;
}
return_values = new_return_values;
// Make sure new added memory are filled with NULL
for (int i = size; i < return_values_size; i++) {

1
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/impl/utils/string-utils.c
View File

@ -175,6 +175,7 @@ char *make_string(const char *fmt, ...) {
int ret = vsnprintf(buf, buflen, fmt, vargs);
va_end(vargs);
if (ret < 0) {
free(buf);
buf = NULL;
}
}

41
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/test/test-container-executor.c
View File

@ -1218,6 +1218,46 @@ void test_trim_function() {
free(trimmed);
}
/**
* This test is used to verify that concatenate() works correctly
*/
void test_concatenate() {
char *concatenate(char *concat_pattern, char *return_path_name, int numArgs, ...);
printf("\nTesting concatenate function\n");
// numArgs: 0
char *expected1 = "fixed1";
char *actual1 = concatenate("fixed1", "test1", 0);
if (actual1 == NULL || strcmp(actual1, expected1) != 0) {
printf("FAIL: concatenate: test1: expected %s got %s\n", expected1, actual1);
exit(1);
}
// numArgs: 1
char *expected2 = "fixed1/var1";
char *actual2 = concatenate("fixed1/%s", "test2", 1, "var1");
if (actual2 == NULL || strcmp(actual2, expected2) != 0) {
printf("FAIL: concatenate: test2: expected %s got %s\n", expected2, actual2);
exit(1);
}
// numArgs: 2
char *expected3 = "fixed1/var1/fixed2/var2";
char *actual3 = concatenate("fixed1/%s/fixed2/%s", "test3", 2, "var1", "var2");
if (actual3 == NULL || strcmp(actual3, expected3) != 0) {
printf("FAIL: concatenate: test3: expected %s got %s\n", expected3, actual3);
exit(1);
}
// concat_pattern with field width
char *expected4 = "[x ]";
char *actual4 = concatenate("[%-10s]", "test4", 1, "x");
if (actual4 == NULL || strcmp(actual4, expected4) != 0) {
printf("FAIL: concatenate: test4: expected %s got %s\n", expected4, actual4);
exit(1);
}
}
int is_empty(char *name);
void test_is_empty() {
@ -1570,6 +1610,7 @@ int main(int argc, char **argv) {
#endif
test_trim_function();
test_concatenate();
printf("\nFinished tests\n");
free(current_username);