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https://github.com/LadybirdBrowser/ladybird.git
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b1058b33fb
Use this instead of uintptr_t throughout the codebase. This makes it possible to pass a FlatPtr to something that has u32 and u64 overloads.
123 lines
3.5 KiB
C++
123 lines
3.5 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <Kernel/Syscall.h>
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#include <errno.h>
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#include <getopt.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#if !defined __ENUMERATE_SYSCALL
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# define __ENUMERATE_SYSCALL(x) SC_##x,
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#endif
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#if !defined __ENUMERATE_REMOVED_SYSCALL
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# define __ENUMERATE_REMOVED_SYSCALL(x)
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#endif
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#define SC_NARG 4
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Syscall::Function syscall_table[] = {
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ENUMERATE_SYSCALLS
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};
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FlatPtr arg[SC_NARG];
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char buf[BUFSIZ];
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FlatPtr parse(char* s);
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int main(int argc, char** argv)
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{
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int oflag;
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int opt;
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while ((opt = getopt(argc, argv, "olh")) != -1) {
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switch (opt) {
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case 'o':
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oflag = 1;
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break;
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case 'l':
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for (auto sc : syscall_table) {
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fprintf(stdout, "%s ", Syscall::to_string(sc));
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}
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return EXIT_SUCCESS;
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case 'h':
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fprintf(stderr, "usage: \tsyscall [-o] [-l] [-h] <syscall-name> <args...> [buf==BUFSIZ buffer]\n");
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fprintf(stderr, "\tsyscall write 1 hello 5\n");
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fprintf(stderr, "\tsyscall -o read 0 buf 5\n");
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fprintf(stderr, "\tsyscall sleep 3\n");
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break;
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default:
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exit(EXIT_FAILURE);
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}
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}
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if (optind >= argc) {
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fprintf(stderr, "No entry specified\n");
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return -1;
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}
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for (int i = 0; i < argc - optind; i++) {
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arg[i] = parse(argv[i + optind]);
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}
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for (auto sc : syscall_table) {
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if (strcmp(Syscall::to_string(sc), (char*)arg[0]) == 0) {
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int rc = syscall(sc, arg[1], arg[2], arg[3]);
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if (rc == -1) {
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perror("syscall");
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} else {
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if (oflag)
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fwrite(buf, 1, sizeof(buf), stdout);
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}
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fprintf(stderr, "Syscall return: %d\n", rc);
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return 0;
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}
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}
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fprintf(stderr, "Invalid syscall entry %s\n", (char*)arg[0]);
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return -1;
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}
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FlatPtr parse(char* s)
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{
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char* t;
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FlatPtr l;
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if (strcmp(s, "buf") == 0) {
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return (FlatPtr)buf;
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}
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l = strtoul(s, &t, 0);
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if (t > s && *t == 0) {
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return l;
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}
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return (FlatPtr)s;
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}
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