36 lines
752 B
C
36 lines
752 B
C
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// init: The initial user-level program
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#include "types.h"
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#include "stat.h"
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#include "user.h"
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#include "fcntl.h"
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char *shell_argv[] = { "sh", 0 };
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int main(int argc, char* argv[]) {
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int pid, wpid;
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if (open("console", O_RDWR) < 0) {
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mknod("console", 1, 1);
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open("console", O_RDWR);
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}
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dup(0); // stdout
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dup(0); // stderr
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for (;;) {
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printf(1, "init: starting sh\n");
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pid = fork();
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if (pid < 0) {
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printf(1, "init: fork failed\n");
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exit();
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}
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if (pid == 0) {
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exec("sh", shell_argv);
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printf(1, "init: exec sh failed\n");
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exit();
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}
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while ((wpid = wait()) >= 0 && wpid != pid) {
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}
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}
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}
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