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Diffstat (limited to 'src/test/test-exec-util.c')
| -rw-r--r-- | src/test/test-exec-util.c | 348 |
1 files changed, 348 insertions, 0 deletions
diff --git a/src/test/test-exec-util.c b/src/test/test-exec-util.c new file mode 100644 index 0000000000..482b0751b9 --- /dev/null +++ b/src/test/test-exec-util.c @@ -0,0 +1,348 @@ +/*** + This file is part of systemd. + + Copyright 2010 Lennart Poettering + Copyright 2013 Thomas H.P. Andersen + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <errno.h> +#include <string.h> +#include <sys/stat.h> +#include <sys/wait.h> +#include <unistd.h> + +#include "alloc-util.h" +#include "copy.h" +#include "def.h" +#include "env-util.h" +#include "exec-util.h" +#include "fd-util.h" +#include "fileio.h" +#include "fs-util.h" +#include "log.h" +#include "macro.h" +#include "rm-rf.h" +#include "string-util.h" +#include "strv.h" + +static int here = 0, here2 = 0, here3 = 0; +void *ignore_stdout_args[] = {&here, &here2, &here3}; + +/* noop handlers, just check that arguments are passed correctly */ +static int ignore_stdout_func(int fd, void *arg) { + assert(fd >= 0); + assert(arg == &here); + safe_close(fd); + + return 0; +} +static int ignore_stdout_func2(int fd, void *arg) { + assert(fd >= 0); + assert(arg == &here2); + safe_close(fd); + + return 0; +} +static int ignore_stdout_func3(int fd, void *arg) { + assert(fd >= 0); + assert(arg == &here3); + safe_close(fd); + + return 0; +} + +static const gather_stdout_callback_t ignore_stdout[] = { + ignore_stdout_func, + ignore_stdout_func2, + ignore_stdout_func3, +}; + +static void test_execute_directory(bool gather_stdout) { + char template_lo[] = "/tmp/test-exec-util.XXXXXXX"; + char template_hi[] = "/tmp/test-exec-util.XXXXXXX"; + const char * dirs[] = {template_hi, template_lo, NULL}; + const char *name, *name2, *name3, *overridden, *override, *masked, *mask; + + log_info("/* %s (%s) */", __func__, gather_stdout ? "gathering stdout" : "asynchronous"); + + assert_se(mkdtemp(template_lo)); + assert_se(mkdtemp(template_hi)); + + name = strjoina(template_lo, "/script"); + name2 = strjoina(template_hi, "/script2"); + name3 = strjoina(template_lo, "/useless"); + overridden = strjoina(template_lo, "/overridden"); + override = strjoina(template_hi, "/overridden"); + masked = strjoina(template_lo, "/masked"); + mask = strjoina(template_hi, "/masked"); + + assert_se(write_string_file(name, + "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/it_works", + WRITE_STRING_FILE_CREATE) == 0); + assert_se(write_string_file(name2, + "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/it_works2", + WRITE_STRING_FILE_CREATE) == 0); + assert_se(write_string_file(overridden, + "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed", + WRITE_STRING_FILE_CREATE) == 0); + assert_se(write_string_file(override, + "#!/bin/sh\necho 'Executing '$0", + WRITE_STRING_FILE_CREATE) == 0); + assert_se(write_string_file(masked, + "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed", + WRITE_STRING_FILE_CREATE) == 0); + assert_se(symlink("/dev/null", mask) == 0); + assert_se(touch(name3) >= 0); + + assert_se(chmod(name, 0755) == 0); + assert_se(chmod(name2, 0755) == 0); + assert_se(chmod(overridden, 0755) == 0); + assert_se(chmod(override, 0755) == 0); + assert_se(chmod(masked, 0755) == 0); + + if (gather_stdout) + execute_directories(dirs, DEFAULT_TIMEOUT_USEC, ignore_stdout, ignore_stdout_args, NULL); + else + execute_directories(dirs, DEFAULT_TIMEOUT_USEC, NULL, NULL, NULL); + + assert_se(chdir(template_lo) == 0); + assert_se(access("it_works", F_OK) >= 0); + assert_se(access("failed", F_OK) < 0); + + assert_se(chdir(template_hi) == 0); + assert_se(access("it_works2", F_OK) >= 0); + assert_se(access("failed", F_OK) < 0); + + (void) rm_rf(template_lo, REMOVE_ROOT|REMOVE_PHYSICAL); + (void) rm_rf(template_hi, REMOVE_ROOT|REMOVE_PHYSICAL); +} + +static void test_execution_order(void) { + char template_lo[] = "/tmp/test-exec-util-lo.XXXXXXX"; + char template_hi[] = "/tmp/test-exec-util-hi.XXXXXXX"; + const char *dirs[] = {template_hi, template_lo, NULL}; + const char *name, *name2, *name3, *overridden, *override, *masked, *mask; + const char *output, *t; + _cleanup_free_ char *contents = NULL; + + assert_se(mkdtemp(template_lo)); + assert_se(mkdtemp(template_hi)); + + output = strjoina(template_hi, "/output"); + + log_info("/* %s >>%s */", __func__, output); + + /* write files in "random" order */ + name2 = strjoina(template_lo, "/90-bar"); + name = strjoina(template_hi, "/80-foo"); + name3 = strjoina(template_lo, "/last"); + overridden = strjoina(template_lo, "/30-override"); + override = strjoina(template_hi, "/30-override"); + masked = strjoina(template_lo, "/10-masked"); + mask = strjoina(template_hi, "/10-masked"); + + t = strjoina("#!/bin/sh\necho $(basename $0) >>", output); + assert_se(write_string_file(name, t, WRITE_STRING_FILE_CREATE) == 0); + + t = strjoina("#!/bin/sh\necho $(basename $0) >>", output); + assert_se(write_string_file(name2, t, WRITE_STRING_FILE_CREATE) == 0); + + t = strjoina("#!/bin/sh\necho $(basename $0) >>", output); + assert_se(write_string_file(name3, t, WRITE_STRING_FILE_CREATE) == 0); + + t = strjoina("#!/bin/sh\necho OVERRIDDEN >>", output); + assert_se(write_string_file(overridden, t, WRITE_STRING_FILE_CREATE) == 0); + + t = strjoina("#!/bin/sh\necho $(basename $0) >>", output); + assert_se(write_string_file(override, t, WRITE_STRING_FILE_CREATE) == 0); + + t = strjoina("#!/bin/sh\necho MASKED >>", output); + assert_se(write_string_file(masked, t, WRITE_STRING_FILE_CREATE) == 0); + + assert_se(symlink("/dev/null", mask) == 0); + + assert_se(chmod(name, 0755) == 0); + assert_se(chmod(name2, 0755) == 0); + assert_se(chmod(name3, 0755) == 0); + assert_se(chmod(overridden, 0755) == 0); + assert_se(chmod(override, 0755) == 0); + assert_se(chmod(masked, 0755) == 0); + + execute_directories(dirs, DEFAULT_TIMEOUT_USEC, ignore_stdout, ignore_stdout_args, NULL); + + assert_se(read_full_file(output, &contents, NULL) >= 0); + assert_se(streq(contents, "30-override\n80-foo\n90-bar\nlast\n")); + + (void) rm_rf(template_lo, REMOVE_ROOT|REMOVE_PHYSICAL); + (void) rm_rf(template_hi, REMOVE_ROOT|REMOVE_PHYSICAL); +} + +static int gather_stdout_one(int fd, void *arg) { + char ***s = arg, *t; + char buf[128] = {}; + + assert_se(s); + assert_se(read(fd, buf, sizeof buf) >= 0); + safe_close(fd); + + assert_se(t = strndup(buf, sizeof buf)); + assert_se(strv_push(s, t) >= 0); + + return 0; +} +static int gather_stdout_two(int fd, void *arg) { + char ***s = arg, **t; + + STRV_FOREACH(t, *s) + assert_se(write(fd, *t, strlen(*t)) == (ssize_t) strlen(*t)); + safe_close(fd); + + return 0; +} +static int gather_stdout_three(int fd, void *arg) { + char **s = arg; + char buf[128] = {}; + + assert_se(read(fd, buf, sizeof buf - 1) > 0); + safe_close(fd); + assert_se(*s = strndup(buf, sizeof buf)); + + return 0; +} + +const gather_stdout_callback_t const gather_stdout[] = { + gather_stdout_one, + gather_stdout_two, + gather_stdout_three, +}; + + +static void test_stdout_gathering(void) { + char template[] = "/tmp/test-exec-util.XXXXXXX"; + const char *dirs[] = {template, NULL}; + const char *name, *name2, *name3; + int r; + + char **tmp = NULL; /* this is only used in the forked process, no cleanup here */ + _cleanup_free_ char *output = NULL; + + void* args[] = {&tmp, &tmp, &output}; + + assert_se(mkdtemp(template)); + + log_info("/* %s */", __func__); + + /* write files */ + name = strjoina(template, "/10-foo"); + name2 = strjoina(template, "/20-bar"); + name3 = strjoina(template, "/30-last"); + + assert_se(write_string_file(name, + "#!/bin/sh\necho a\necho b\necho c\n", + WRITE_STRING_FILE_CREATE) == 0); + assert_se(write_string_file(name2, + "#!/bin/sh\necho d\n", + WRITE_STRING_FILE_CREATE) == 0); + assert_se(write_string_file(name3, + "#!/bin/sh\nsleep 1", + WRITE_STRING_FILE_CREATE) == 0); + + assert_se(chmod(name, 0755) == 0); + assert_se(chmod(name2, 0755) == 0); + assert_se(chmod(name3, 0755) == 0); + + r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, gather_stdout, args, NULL); + assert_se(r >= 0); + + log_info("got: %s", output); + + assert_se(streq(output, "a\nb\nc\nd\n")); +} + +static void test_environment_gathering(void) { + char template[] = "/tmp/test-exec-util.XXXXXXX", **p; + const char *dirs[] = {template, NULL}; + const char *name, *name2, *name3; + int r; + + char **tmp = NULL; /* this is only used in the forked process, no cleanup here */ + _cleanup_strv_free_ char **env = NULL; + + void* const args[] = { &tmp, &tmp, &env }; + + assert_se(mkdtemp(template)); + + log_info("/* %s */", __func__); + + /* write files */ + name = strjoina(template, "/10-foo"); + name2 = strjoina(template, "/20-bar"); + name3 = strjoina(template, "/30-last"); + + assert_se(write_string_file(name, + "#!/bin/sh\n" + "echo A=23\n", + WRITE_STRING_FILE_CREATE) == 0); + assert_se(write_string_file(name2, + "#!/bin/sh\n" + "echo A=22:$A\n\n\n", /* substitution from previous generator */ + WRITE_STRING_FILE_CREATE) == 0); + assert_se(write_string_file(name3, + "#!/bin/sh\n" + "echo A=$A:24\n" + "echo B=12\n" + "echo C=000\n" + "echo C=001\n" /* variable overwriting */ + /* various invalid entries */ + "echo unset A\n" + "echo unset A=\n" + "echo unset A=B\n" + "echo unset \n" + "echo A B=C\n" + "echo A\n" + /* test variable assignment without newline */ + "echo PATH=$PATH:/no/such/file", /* no newline */ + WRITE_STRING_FILE_CREATE) == 0); + + assert_se(chmod(name, 0755) == 0); + assert_se(chmod(name2, 0755) == 0); + assert_se(chmod(name3, 0755) == 0); + + r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, gather_environment, args, NULL); + assert_se(r >= 0); + + STRV_FOREACH(p, env) + log_info("got env: \"%s\"", *p); + + assert_se(streq(strv_env_get(env, "A"), "22:23:24")); + assert_se(streq(strv_env_get(env, "B"), "12")); + assert_se(streq(strv_env_get(env, "C"), "001")); + assert_se(endswith(strv_env_get(env, "PATH"), ":/no/such/file")); +} + +int main(int argc, char *argv[]) { + log_set_max_level(LOG_DEBUG); + log_parse_environment(); + log_open(); + + test_execute_directory(true); + test_execute_directory(false); + test_execution_order(); + test_stdout_gathering(); + test_environment_gathering(); + + return 0; +} |