1 2 #include <signal.h> 3 #include <stdio.h> 4 #include <sys/syscall.h> 5 #include <unistd.h> 6 7 // Reg test for bug #93328: we were using too-big sigset types, and thus 8 // trashing memory when we wrote out the 'oldset' param from sigprocmask(). 9 10 int main(void) 11 { 12 #if defined(__NR_sigprocmask) \ 13 && !defined(__powerpc64__) \ 14 && !defined(__s390x__) \ 15 && !defined(__arm__) 16 17 // arm-linux uses rt_sigprocmask, so no sigset mangling takes place 18 19 int x[6], *s, *os, i; 20 21 x[0] = 0x11111111; 22 x[1] = 0x89abcdef; 23 x[2] = 0x22222222; 24 x[3] = 0x33333333; 25 x[4] = 0x0; 26 x[5] = 0x44444444; 27 28 s = &x[1]; 29 os = &x[4]; 30 31 // Make sure the system is in a known state with no signals 32 // blocked as perl has been known to leave some signals blocked 33 // when starting child processes which can cause failures in 34 // this test unless we reset things here. 35 syscall(__NR_sigprocmask, SIG_SETMASK, os, NULL); 36 37 fprintf(stderr, "before\n"); 38 for (i = 0; i < 6; i++) { 39 fprintf(stderr, "%x ", x[i]); 40 } 41 fprintf(stderr, "\n"); 42 43 syscall(__NR_sigprocmask, SIG_BLOCK, s, os); 44 45 fprintf(stderr, "after1\n"); 46 for (i = 0; i < 6; i++) { 47 fprintf(stderr, "%x ", x[i]); 48 } 49 fprintf(stderr, "\n"); 50 51 syscall(__NR_sigprocmask, SIG_BLOCK, s, os); 52 53 fprintf(stderr, "after2\n"); 54 for (i = 0; i < 6; i++) { 55 fprintf(stderr, "%x ", x[i]); 56 } 57 fprintf(stderr, "\n"); 58 59 #else 60 61 fprintf(stderr, "__NR_sigprocmask not supported on this platform\n"); 62 63 #endif 64 65 return(0); 66 } 67
