blob: b5a942cfb72ea2b1a859926885dd181b49416abb [file] [log] [blame] [edit]
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define TOOL(name) int name##_main(int, char**);
#include "tools.h"
#undef TOOL
static struct {
const char* name;
int (*func)(int, char**);
} tools[] = {
#define TOOL(name) { #name, name##_main },
#include "tools.h"
#undef TOOL
{ 0, 0 },
};
static void SIGPIPE_handler(int signal) {
// Those desktop Linux tools that catch SIGPIPE seem to agree that it's
// a successful way to exit, not a failure. (Which makes sense --- we were
// told to stop by a reader, rather than failing to continue ourselves.)
_exit(0);
}
int main(int argc, char** argv) {
// Let's assume that none of this code handles broken pipes. At least ls,
// ps, and top were broken (though I'd previously added this fix locally
// to top). We exit rather than use SIG_IGN because tools like top will
// just keep on writing to nowhere forever if we don't stop them.
signal(SIGPIPE, SIGPIPE_handler);
char* cmd = strrchr(argv[0], '/');
char* name = cmd ? (cmd + 1) : argv[0];
for (size_t i = 0; tools[i].name; i++) {
if (!strcmp(tools[i].name, name)) {
return tools[i].func(argc, argv);
}
}
printf("%s: no such tool\n", argv[0]);
return 127;
}
int toolbox_main(int argc, char** argv) {
// "toolbox foo ..." is equivalent to "foo ..."
if (argc > 1) {
return main(argc - 1, argv + 1);
}
// Plain "toolbox" lists the tools.
for (size_t i = 1; tools[i].name; i++) {
printf("%s%c", tools[i].name, tools[i+1].name ? ' ' : '\n');
}
return 0;
}