DeforaOS/strace
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Detect errors from ptrace() in child processes

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This commit is contained in:
Pierre Pronchery 2015-06-19 01:00:52 -04:00
parent 8a6b9e0a71
commit c986c06f68
1 changed files with 14 additions and 5 deletions
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19
src/strace.c
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@ -21,6 +21,7 @@
#include <unistd.h> #include <unistd.h>
#include <stdio.h> #include <stdio.h>
#include <signal.h> #include <signal.h>
#include <errno.h>
#include "platform.h" #include "platform.h"
#include "strace.h" #include "strace.h"
#include "../config.h" #include "../config.h"
@ -60,11 +61,19 @@ int strace(char * argv[])
static int _strace_child(char * argv[]) static int _strace_child(char * argv[])
{ {
/* child */ errno = 0;
ptrace(PT_TRACE_ME, -1, NULL, (ptrace_data_t)0); if(ptrace(PT_TRACE_ME, -1, NULL, (ptrace_data_t)0) == -1
execvp(argv[0], argv); && errno != 0)
_strace_error(argv[0], 1); {
_exit(127); _strace_error("ptrace", 1);
_exit(125);
}
else
{
execvp(argv[0], argv);
_strace_error(argv[0], 1);
_exit(127);
}
return 0; return 0;
} }