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intercept: Abort via the equivalent of raise(SIGABRT) #93

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intercept: Abort via the equivalent of raise(SIGABRT) #93

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9 changes: 8 additions & 1 deletion src/intercept.c
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@
#include <fcntl.h>
#include <inttypes.h>
#include <unistd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
Expand Down Expand Up @@ -501,6 +502,8 @@ void
xabort_errno(int error_code, const char *msg)
{
static const char main_msg[] = " libsyscall_intercept error\n";
int tid;
pid_t pid;

if (msg != NULL) {
/* not using libc - inline strlen */
Expand All @@ -527,7 +530,11 @@ xabort_errno(int error_code, const char *msg)
}

syscall_no_intercept(SYS_write, 2, main_msg, sizeof(main_msg) - 1);
syscall_no_intercept(SYS_exit_group, 1);

/* abort(), but without using glibc */
tid = syscall_no_intercept(SYS_gettid);
pid = syscall_no_intercept(SYS_getpid);
syscall(SYS_tgkill, pid, tid, SIGABRT);
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So, why is it syscall here, and why not syscall_no_intercept?
Your comment says "without glibc", but syscall is a function in libc, which is going to be intercepted actually...


__builtin_unreachable();
}
Expand Down