#define STP_NETLINK_ONLY #define STP_NUM_STRINGS 1 #define USE_RET_PROBES #include "runtime.h" #include "probes.c" MODULE_DESCRIPTION("SystemTap probe: bench_ret"); MODULE_AUTHOR("Martin Hunt"); static int inst_sys_getuid (struct kprobe *p, struct pt_regs *regs) { return 0; } static int inst_sys_getgid_ret (struct kretprobe_instance *ri, struct pt_regs *regs) { return 0; } static int inst_sys_getgid (struct kprobe *p, struct pt_regs *regs) { return 0; } static struct kretprobe kpr[] = { { .kp.addr = "sys_getuid", .handler = inst_sys_getuid }, { .kp.addr = "sys_getgid", .handler = inst_sys_getgid_ret } }; static struct kprobe kp[] = { { .addr = "sys_getgid", .pre_handler = inst_sys_getgid } }; #define NUM_KPROBES (sizeof(kpr)/sizeof(struct kretprobe)) int probe_start(void) { int ret = _stp_register_kretprobes (kpr, NUM_KPROBES); if (ret >= 0) { if ((ret = _stp_register_kprobes (kp, 1)) < 0) _stp_unregister_kretprobes (kpr, NUM_KPROBES); } return ret; } void probe_exit (void) { _stp_unregister_kretprobes (kpr, NUM_KPROBES); _stp_unregister_kprobes (kp, 1); } 7 Ruby GIT repositoryJeroen van Meeuwen
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