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Merge "modprobe: add -s/--syslog flag"

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Treehugger Robot 2020-06-26 22:36:12 +00:00 committed by Gerrit Code Review
commit 14260d2314
1 changed files with 70 additions and 58 deletions
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128
toolbox/modprobe.cpp
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@ -15,15 +15,13 @@
*/
#include <ctype.h>
#include <errno.h>
#include <getopt.h>
#include <stdlib.h>
#include <string.h>
#include <iostream>
#include <string>
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/strings.h>
#include <modprobe/modprobe.h>
@ -37,32 +35,31 @@ enum modprobe_mode {
};
void print_usage(void) {
std::cerr << "Usage:" << std::endl;
std::cerr << std::endl;
LOG(INFO) << "Usage:";
LOG(INFO);
// -d option is required on Android
std::cerr << " modprobe [options] -d DIR [--all=FILE|MODULE]..." << std::endl;
std::cerr << " modprobe [options] -d DIR MODULE [symbol=value]..." << std::endl;
std::cerr << std::endl;
std::cerr << "Options:" << std::endl;
std::cerr << " --all=FILE: FILE to acquire module names from" << std::endl;
std::cerr << " -b, --use-blocklist: Apply blocklist to module names too" << std::endl;
std::cerr << " -d, --dirname=DIR: Load modules from DIR, option may be used multiple times"
<< std::endl;
std::cerr << " -D, --show-depends: Print dependencies for modules only, do not load"
<< std::endl;
std::cerr << " -h, --help: Print this help" << std::endl;
std::cerr << " -l, --list: List modules matching pattern" << std::endl;
std::cerr << " -r, --remove: Remove MODULE (multiple modules may be specified)" << std::endl;
std::cerr << " -q, --quiet: disable messages" << std::endl;
std::cerr << " -v, --verbose: enable more messages" << std::endl;
std::cerr << std::endl;
LOG(INFO) << " modprobe [options] -d DIR [--all=FILE|MODULE]...";
LOG(INFO) << " modprobe [options] -d DIR MODULE [symbol=value]...";
LOG(INFO);
LOG(INFO) << "Options:";
LOG(INFO) << " --all=FILE: FILE to acquire module names from";
LOG(INFO) << " -b, --use-blocklist: Apply blocklist to module names too";
LOG(INFO) << " -d, --dirname=DIR: Load modules from DIR, option may be used multiple times";
LOG(INFO) << " -D, --show-depends: Print dependencies for modules only, do not load";
LOG(INFO) << " -h, --help: Print this help";
LOG(INFO) << " -l, --list: List modules matching pattern";
LOG(INFO) << " -r, --remove: Remove MODULE (multiple modules may be specified)";
LOG(INFO) << " -s, --syslog: print to syslog also";
LOG(INFO) << " -q, --quiet: disable messages";
LOG(INFO) << " -v, --verbose: enable more messages, even more with a second -v";
LOG(INFO);
}
#define check_mode() \
if (mode != AddModulesMode) { \
std::cerr << "Error, multiple mode flags specified" << std::endl; \
print_usage(); \
return EXIT_FAILURE; \
#define check_mode() \
if (mode != AddModulesMode) { \
LOG(ERROR) << "multiple mode flags specified"; \
print_usage(); \
return EXIT_FAILURE; \
}
std::string stripComments(const std::string& str) {
@ -76,16 +73,28 @@ std::string stripComments(const std::string& str) {
/* NOTREACHED */
}
auto syslog = false;
void MyLogger(android::base::LogId id, android::base::LogSeverity severity, const char* tag,
const char* file, unsigned int line, const char* message) {
android::base::StdioLogger(id, severity, tag, file, line, message);
if (syslog && message[0]) {
android::base::KernelLogger(id, severity, tag, file, line, message);
}
}
} // anonymous namespace
extern "C" int modprobe_main(int argc, char** argv) {
android::base::InitLogging(argv, MyLogger);
android::base::SetMinimumLogSeverity(android::base::INFO);
std::vector<std::string> modules;
std::string module_parameters;
std::string mods;
std::vector<std::string> mod_dirs;
modprobe_mode mode = AddModulesMode;
bool blocklist = false;
bool verbose = false;
int rv = EXIT_SUCCESS;
int opt;
@ -102,10 +111,11 @@ extern "C" int modprobe_main(int argc, char** argv) {
{ "list", no_argument, 0, 'l' },
{ "quiet", no_argument, 0, 'q' },
{ "remove", no_argument, 0, 'r' },
{ "syslog", no_argument, 0, 's' },
{ "verbose", no_argument, 0, 'v' },
};
// clang-format on
while ((opt = getopt_long(argc, argv, "a::bd:Dhlqrv", long_options, &option_index)) != -1) {
while ((opt = getopt_long(argc, argv, "a::bd:Dhlqrsv", long_options, &option_index)) != -1) {
switch (opt) {
case 'a':
// toybox modprobe supported -a to load multiple modules, this
@ -113,8 +123,7 @@ extern "C" int modprobe_main(int argc, char** argv) {
check_mode();
if (optarg == NULL) break;
if (!android::base::ReadFileToString(optarg, &mods)) {
std::cerr << "Failed to open " << optarg << ": " << strerror(errno)
<< std::endl;
PLOG(ERROR) << "Failed to open " << optarg;
rv = EXIT_FAILURE;
}
for (auto mod : android::base::Split(stripComments(mods), "\n")) {
@ -135,24 +144,33 @@ extern "C" int modprobe_main(int argc, char** argv) {
mode = ShowDependenciesMode;
break;
case 'h':
android::base::SetMinimumLogSeverity(android::base::INFO);
print_usage();
return EXIT_SUCCESS;
return rv;
case 'l':
check_mode();
mode = ListModulesMode;
break;
case 'q':
verbose = false;
android::base::SetMinimumLogSeverity(android::base::WARNING);
break;
case 'r':
check_mode();
mode = RemoveModulesMode;
break;
case 's':
syslog = true;
break;
case 'v':
verbose = true;
if (android::base::GetMinimumLogSeverity() <= android::base::DEBUG) {
android::base::SetMinimumLogSeverity(android::base::VERBOSE);
} else {
android::base::SetMinimumLogSeverity(android::base::DEBUG);
}
break;
default:
std::cerr << "Unrecognized option: " << opt << std::endl;
LOG(ERROR) << "Unrecognized option: " << opt;
print_usage();
return EXIT_FAILURE;
}
}
@ -171,39 +189,33 @@ extern "C" int modprobe_main(int argc, char** argv) {
}
}
if (verbose) {
std::cout << "mode is " << mode << std::endl;
std::cout << "verbose is " << verbose << std::endl;
std::cout << "mod_dirs is: " << android::base::Join(mod_dirs, " ") << std::endl;
std::cout << "modules is: " << android::base::Join(modules, " ") << std::endl;
std::cout << "module parameters is: " << android::base::Join(module_parameters, " ")
<< std::endl;
}
LOG(DEBUG) << "mode is " << mode;
LOG(DEBUG) << "mod_dirs is: " << android::base::Join(mod_dirs, " ");
LOG(DEBUG) << "modules is: " << android::base::Join(modules, " ");
LOG(DEBUG) << "module parameters is: " << android::base::Join(module_parameters, " ");
if (modules.empty()) {
if (mode == ListModulesMode) {
// emulate toybox modprobe list with no pattern (list all)
modules.emplace_back("*");
} else {
std::cerr << "No modules given." << std::endl;
LOG(ERROR) << "No modules given.";
print_usage();
return EXIT_FAILURE;
}
}
if (mod_dirs.empty()) {
std::cerr << "No module configuration directories given." << std::endl;
LOG(ERROR) << "No module configuration directories given.";
print_usage();
return EXIT_FAILURE;
}
if (parameter_count && modules.size() > 1) {
std::cerr << "Only one module may be loaded when specifying module parameters."
<< std::endl;
LOG(ERROR) << "Only one module may be loaded when specifying module parameters.";
print_usage();
return EXIT_FAILURE;
}
Modprobe m(mod_dirs);
m.EnableVerbose(verbose);
if (blocklist) {
m.EnableBlocklist(true);
}
@ -212,19 +224,19 @@ extern "C" int modprobe_main(int argc, char** argv) {
switch (mode) {
case AddModulesMode:
if (!m.LoadWithAliases(module, true, module_parameters)) {
std::cerr << "Failed to load module " << module << std::endl;
PLOG(ERROR) << "Failed to load module " << module;
rv = EXIT_FAILURE;
}
break;
case RemoveModulesMode:
if (!m.Remove(module)) {
std::cerr << "Failed to remove module " << module << std::endl;
PLOG(ERROR) << "Failed to remove module " << module;
rv = EXIT_FAILURE;
}
break;
case ListModulesMode: {
std::vector<std::string> list = m.ListModules(module);
std::cout << android::base::Join(list, "\n") << std::endl;
LOG(INFO) << android::base::Join(list, "\n");
break;
}
case ShowDependenciesMode: {
@ -235,17 +247,17 @@ extern "C" int modprobe_main(int argc, char** argv) {
rv = EXIT_FAILURE;
break;
}
std::cout << "Dependencies for " << module << ":" << std::endl;
std::cout << "Soft pre-dependencies:" << std::endl;
std::cout << android::base::Join(pre_deps, "\n") << std::endl;
std::cout << "Hard dependencies:" << std::endl;
std::cout << android::base::Join(deps, "\n") << std::endl;
std::cout << "Soft post-dependencies:" << std::endl;
std::cout << android::base::Join(post_deps, "\n") << std::endl;
LOG(INFO) << "Dependencies for " << module << ":";
LOG(INFO) << "Soft pre-dependencies:";
LOG(INFO) << android::base::Join(pre_deps, "\n");
LOG(INFO) << "Hard dependencies:";
LOG(INFO) << android::base::Join(deps, "\n");
LOG(INFO) << "Soft post-dependencies:";
LOG(INFO) << android::base::Join(post_deps, "\n");
break;
}
default:
std::cerr << "Bad mode" << std::endl;
LOG(ERROR) << "Bad mode";
rv = EXIT_FAILURE;
}
}