mirror of git://sourceware.org/git/glibc.git
34 lines
675 B
C
34 lines
675 B
C
#include <sys/types.h>
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#include <dlfcn.h>
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#include <error.h>
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#include <mcheck.h>
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#include <stdlib.h>
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#include <unistd.h>
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pid_t pid, pid2;
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pid_t getpid(void)
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{
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pid_t (*f)(void);
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f = (pid_t (*)(void)) dlsym (RTLD_NEXT, "getpid");
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if (f == NULL)
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error (EXIT_FAILURE, 0, "dlsym (RTLD_NEXT, \"getpid\"): %s", dlerror ());
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return (pid2 = f()) + 26;
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}
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int
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main (void)
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{
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pid_t (*f)(void);
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mtrace ();
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f = (pid_t (*)(void)) dlsym (RTLD_DEFAULT, "getpid");
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if (f == NULL)
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error (EXIT_FAILURE, 0, "dlsym (RTLD_DEFAULT, \"getpid\"): %s", dlerror ());
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pid = f();
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if (pid != pid2 + 26)
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error (EXIT_FAILURE, 0, "main getpid() not called");
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return 0;
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}
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