mirror of
https://github.com/RGBCube/serenity
synced 2025-05-31 07:08:10 +00:00
fe237ee215
- Turn Keyboard into a CharacterDevice (85,1) at /dev/keyboard.
- Implement MM::unmapRegionsForTask() and MM::unmapRegion()
- Save SS correctly on interrupt.
- Add a simple Spawn syscall for launching another process.
- Move a bunch of IO syscall debug output behind DEBUG_IO.
- Have ASSERT do a "cli" immediately when failing.
This makes the output look proper every time.
- Implement a bunch of syscalls in LibC.
- Add a simple shell ("sh"). All it can do now is read a line
of text from /dev/keyboard and then try launching the specified
executable by calling spawn().
There are definitely bugs in here, but we're moving on forward.
56 lines
1.2 KiB
C++
56 lines
1.2 KiB
C++
#include <LibC/stdio.h>
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#include <LibC/unistd.h>
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#include <LibC/process.h>
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static void prompt()
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{
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if (getuid() == 0)
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printf("# ");
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else
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printf("$ ");
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}
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static int runcmd(char* cmd)
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{
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//printf("command: '%s'\n", cmd);
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int ret = spawn(cmd);
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if (ret == -1) {
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printf("spawn failed: %s\n", cmd);
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}
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return 0;
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}
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int main(int c, char** v)
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{
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char linebuf[128];
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int linedx = 0;
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linebuf[0] = '\0';
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int fd = open("/dev/keyboard");
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if (fd == -1) {
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printf("failed to open /dev/keyboard :(\n");
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return 1;
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}
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prompt();
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for (;;) {
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char keybuf[16];
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ssize_t nread = read(fd, keybuf, sizeof(keybuf));
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if (nread < 0) {
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printf("failed to read :(\n");
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return 2;
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}
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for (ssize_t i = 0; i < nread; ++i) {
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putchar(keybuf[i]);
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if (keybuf[i] != '\n') {
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linebuf[linedx++] = keybuf[i];
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linebuf[linedx] = '\0';
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} else {
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runcmd(linebuf);
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linebuf[0] = '\0';
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linedx = 0;
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prompt();
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}
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}
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}
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return 0;
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}
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