49 lines
722 B
C
49 lines
722 B
C
// Test that fork fails gracefully.
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// Tiny executable so that the limit can be filling the proc table.
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#include "kernel/types.h"
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#include "kernel/stat.h"
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#include "user/user.h"
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#define N 1000
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void print(const char *s) { write(1, s, strlen(s)); }
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void forktest(void) {
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int n, pid;
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print("fork test\n");
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for (n = 0; n < N; n++) {
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pid = fork();
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if (pid < 0)
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break;
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if (pid == 0)
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exit(0);
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}
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if (n == N) {
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print("fork claimed to work N times!\n");
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exit(1);
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}
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for (; n > 0; n--) {
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if (wait(0) < 0) {
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print("wait stopped early\n");
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exit(1);
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}
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}
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if (wait(0) != -1) {
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print("wait got too many\n");
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exit(1);
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}
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print("fork test OK\n");
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}
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int main(void) {
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forktest();
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exit(0);
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}
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