rename example (test_fork => tests)
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2 changed files with 15 additions and 6 deletions
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@ -14,9 +14,9 @@ KEEP_DEBUG = --only-keep-debug
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default: all
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all: hello test_fork
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all: hello tests
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test_fork: test_fork.o
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tests: tests.o
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$(CC) -T link.ld -o $@ $(LDFLAGS) $<
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$(OBJCOPY) $(KEEP_DEBUG) $@ $@.sym
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$(OBJCOPY) $(STRIP_DEBUG) $@
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@ -29,7 +29,7 @@ hello: hello.o
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chmod a-x $@.sym
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clean:
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$(RM) hello test_fork *.sym *.o *~
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$(RM) hello tests *.sym *.o *~
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depend:
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$(CC) -MM $(CFLAGS) *.c > Makefile.dep
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@ -22,18 +22,27 @@
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#undef errno
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extern int errno;
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int main(int argc, char** argv)
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{
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pid_t pid = fork();
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int status = 0;
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pid_t pid;
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printf("Create child process...\n");
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if (pid == 0) // child
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pid = fork();
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if (pid == 0) { // child
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printf("Hello from child process!\n");
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else
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exit(42);
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} else {
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printf("Hello from parent process! pid = %u\n", pid);
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wait(&status);
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printf("Child terminated with status %d\n", status);
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}
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return errno;
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}
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