eb202baf41
The s390 hardware can't support an exact si_addr, and the current kernels don't handle text addresses correctly at all. Until that improves, skip the test on s390. * tests/pc.c (main): Return 77 on s390 systems.
75 lines
1.4 KiB
C
75 lines
1.4 KiB
C
#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <dlfcn.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <sys/wait.h>
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#include <sys/sendfile.h>
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int main(void)
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{
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const unsigned long pagesize = sysconf(_SC_PAGESIZE);
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#ifdef __s390__
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/*
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* The si_addr field is unreliable:
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* https://marc.info/?l=linux-s390&m=142515870124248&w=2
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*/
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return 77;
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#endif
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/* write instruction pointer length to the log */
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if (write(-1, NULL, 2 * sizeof(void *)) >= 0)
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return 77;
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/* just a noticeable line in the log */
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if (munmap(&main, 0) >= 0)
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return 77;
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int pid = fork();
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if (pid < 0)
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return 77;
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if (!pid) {
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const unsigned long mask = ~(pagesize - 1);
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unsigned long addr = (unsigned long) &main & mask;
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unsigned long size = pagesize << 1;
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#ifdef HAVE_DLADDR
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Dl_info info;
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if (dladdr(&main, &info)) {
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const unsigned long base =
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(unsigned long) info.dli_fbase & mask;
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if (base < addr) {
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size += addr - base;
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addr = base;
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}
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} else
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#endif
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{
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addr -= size;
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size <<= 1;
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}
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/* SIGSEGV is expected */
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(void) munmap((void *) addr, size);
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(void) munmap((void *) addr, size);
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return 77;
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}
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int status;
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if (wait(&status) != pid ||
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!WIFSIGNALED(status) ||
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WTERMSIG(status) != SIGSEGV)
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return 77;
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/* dump process map for debug purposes */
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close(0);
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if (!open("/proc/self/maps", O_RDONLY))
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(void) sendfile(1, 0, NULL, pagesize);
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return 0;
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}
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