56 lines
783 B
C
56 lines
783 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
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printf(int fd, const char *s, ...)
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{
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write(fd, s, strlen(s));
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}
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void
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forktest(void)
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{
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int n, pid;
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printf(1, "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();
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}
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if(n == N){
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printf(1, "fork claimed to work N times!\n", N);
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exit();
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}
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for(; n > 0; n--){
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if(wait() < 0){
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printf(1, "wait stopped early\n");
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exit();
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}
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}
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if(wait() != -1){
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printf(1, "wait got too many\n");
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exit();
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}
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printf(1, "fork test OK\n");
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}
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int
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main(void)
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{
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forktest();
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exit();
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}
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