gcc/testsuite/c-c++-common/analyzer/sock-1.c

   1 typedef unsigned int __u32;
   2 __extension__ typedef __signed__ long long __s64;
   3 __extension__ typedef unsigned long long __u64;
   4 typedef __u32 u32;
   5 typedef __s64 s64;
   6 typedef __u64 u64;
   7 typedef long long __kernel_time64_t;
   8 #ifndef __cplusplus
   9 typedef _Bool bool;
  10 #endif
  11 typedef __s64 time64_t;
  12 struct __kernel_timespec {
  13  __kernel_time64_t tv_sec;
  14  long long tv_nsec;
  15 };
  16 struct timespec64 {
  17  time64_t tv_sec;
  18  long tv_nsec;
  19 };
  20
  21 extern struct timespec64 ns_to_timespec64(const s64 nsec);
  22 int put_timespec64(const struct timespec64 *ts,
  23   struct __kernel_timespec *uts);
  24
  25 /* [...snip...] */
  26
  27 extern int put_old_timespec32(const struct timespec64 *, void *);
  28
  29 /* [...snip...] */
  30
  31 /* [...snip...] */
  32
  33 typedef s64 ktime_t;
  34
  35 /* [...snip...] */
  36
  37 extern void ktime_get_real_ts64(struct timespec64 *tv);
  38
  39 /* [...snip...] */
  40
  41 enum tk_offsets {
  42  TK_OFFS_REAL,
  43  TK_OFFS_BOOT,
  44  TK_OFFS_TAI,
  45  TK_OFFS_MAX,
  46 };
  47
  48 extern ktime_t ktime_get(void);
  49 extern ktime_t ktime_get_with_offset(enum tk_offsets offs);
  50 extern ktime_t ktime_get_coarse_with_offset(enum tk_offsets offs);
  51 extern ktime_t ktime_mono_to_any(ktime_t tmono, enum tk_offsets offs);
  52 extern ktime_t ktime_get_raw(void);
  53 extern u32 ktime_get_resolution_ns(void);
  54
  55
  56 static ktime_t ktime_get_real(void)
  57 {
  58  return ktime_get_with_offset(TK_OFFS_REAL);
  59 }
  60
  61 /* [...snip...] */
  62
  63 struct socket {
  64  /* [...snip...] */
  65  struct sock *sk;
  66  /* [...snip...] */
  67 };
  68
  69 /* [...snip...] */
  70
  71 struct sock {
  72  /* [...snip...] */
  73  ktime_t sk_stamp;
  74  /* [...snip...] */
  75 };
  76
  77 /* [...snip...] */
  78
  79 static ktime_t sock_read_timestamp(struct sock *sk)
  80 {
  81   return *(const volatile ktime_t *)&(sk->sk_stamp);
  82 }
  83
  84 static void sock_write_timestamp(struct sock *sk, ktime_t kt)
  85 {
  86   *(volatile ktime_t *)&(sk->sk_stamp) = kt;
  87 }
  88
  89 /* [...snip...] */
  90
  91 int sock_gettstamp(struct socket *sock, void *userstamp,
  92      bool timeval, bool time32)
  93 {
  94  struct sock *sk = sock->sk;
  95  struct timespec64 ts;
  96
  97  /* [...snip...] */
  98  ts = ns_to_timespec64((sock_read_timestamp(sk)));
  99  if (ts.tv_sec == -1)
 100   return -2;
 101  if (ts.tv_sec == 0) {
 102   ktime_t kt = ktime_get_real();
 103   sock_write_timestamp(sk, kt);
 104   ts = ns_to_timespec64((kt));
 105  }
 106
 107  if (timeval)
 108   ts.tv_nsec /= 1000;
 109
 110
 111  if (time32)
 112   return put_old_timespec32(&ts, userstamp);
 113  return put_timespec64(&ts, (struct __kernel_timespec *) userstamp);
 114 }