26 lines
914 B
C
26 lines
914 B
C
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/*
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* Just do:
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* # gcc -fno-stack-protector -s -shared -fPIC ssp_simple.c -o /lib/libssp_simple.so
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* # echo '/lib/libssp_simple.so' > /etc/ld.so.preload
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* # emerge glibc
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* # rm -f /lib/libssp_simple.so /etc/ld.so.preload
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*/
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#include <syslog.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/param.h>
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#include <sys/sysctl.h>
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unsigned long __guard = 0UL; static void __guard_setup(void) __attribute__ ((constructor));
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void __stack_smash_handler(char func[], int damaged __attribute__ ((unused)));
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static void __guard_setup(void) { if (__guard != 0UL) return; __guard = 0xFF0A0D00UL; }
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void __stack_smash_handler(char func[], int damaged) {
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syslog(LOG_CRIT, "stack overflow in function %s(); %s=%p __guard_setup=%p __guard=%p " \
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"PPID=%d PID=%d UID=%d EUID=%d GID=%d EGID=%d",
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func, func, __guard_setup, __guard,
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getppid(), getpid(), getuid(), geteuid(), getgid(), getegid());
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_exit(127);
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}
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