diff options
Diffstat (limited to 'src/strace.c')
| -rw-r--r-- | src/strace.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/src/strace.c b/src/strace.c index 7a58bdbd6..cea445fe2 100644 --- a/src/strace.c +++ b/src/strace.c @@ -84,6 +84,7 @@ int Tflag_scale = 1000; int Tflag_width = 6; bool iflag; bool count_wallclock; +long long syscall_limit = -1; static bool nflag; static int tflag_scale = 1000000000; static unsigned tflag_width = 0; @@ -461,6 +462,10 @@ Statistics:\n\ -w, --summary-wall-clock\n\ summarise syscall latency (default is system time)\n\ \n\ +Stop condition:\n\ + -l LIMIT, --syscall-limit=LIMIT\n\ + Detach all tracees after tracing LIMIT syscalls\n\ +\n\ Tampering:\n\ -e inject=SET[:error=ERRNO|:retval=VALUE][:signal=SIG][:syscall=SYSCALL]\n\ [:delay_enter=DELAY][:delay_exit=DELAY]\n\ @@ -2245,7 +2250,7 @@ init(int argc, char *argv[]) #endif static const char optstring[] = - "+a:Ab:cCdDe:E:fFhiI:kno:O:p:P:qrs:S:tTu:U:vVwxX:yYzZ"; + "+a:Ab:cCdDe:E:fFhiI:kl:no:O:p:P:qrs:S:tTu:U:vVwxX:yYzZ"; enum { GETOPT_SECCOMP = 0x100, @@ -2291,6 +2296,7 @@ init(int argc, char *argv[]) { "instruction-pointer", no_argument, 0, 'i' }, { "interruptible", required_argument, 0, 'I' }, { "stack-traces", no_argument, 0, 'k' }, + { "syscall-limit", required_argument, 0, 'l' }, { "syscall-number", no_argument, 0, 'n' }, { "output", required_argument, 0, 'o' }, { "summary-syscall-overhead", required_argument, 0, 'O' }, @@ -2432,6 +2438,11 @@ init(int argc, char *argv[]) "build of strace"); #endif break; + case 'l': + syscall_limit = string_to_ulonglong(optarg); + if (syscall_limit <= 0) + error_opt_arg(c, lopt, optarg); + break; case 'n': nflag = 1; break; @@ -3353,6 +3364,13 @@ next_event(void) if (interrupted) return NULL; + if (syscall_limit == 0) { + if (!is_number_in_set(QUIET_ATTACH, quiet_set)) + error_msg("System call limit has been reached, detaching tracees"); + strace_child = 0; + return NULL; + } + invalidate_umove_cache(); struct tcb *tcp = NULL; |