1 /* setitimer -- Set the state of an interval timer.  Linux/32 version.
2    Copyright (C) 2020-2021 Free Software Foundation, Inc.
3    This file is part of the GNU C Library.
4 
5    The GNU C Library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Lesser General Public
7    License as published by the Free Software Foundation; either
8    version 2.1 of the License, or (at your option) any later version.
9 
10    The GNU C Library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14 
15    You should have received a copy of the GNU Lesser General Public
16    License along with the GNU C Library; if not, see
17    <http://www.gnu.org/licenses/>.  */
18 
19 #include <time.h>
20 #include <sys/time.h>
21 #include <sys/types.h>
22 #include <sysdep.h>
23 #include <tv32-compat.h>
24 
25 int
__setitimer64(__itimer_which_t which,const struct __itimerval64 * restrict new_value,struct __itimerval64 * restrict old_value)26 __setitimer64 (__itimer_which_t which,
27                const struct __itimerval64 *restrict new_value,
28                struct __itimerval64 *restrict old_value)
29 {
30 #if __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64
31   return INLINE_SYSCALL_CALL (setitimer, which, new_value, old_value);
32 #else
33   struct __itimerval32 new_value_32;
34 
35   if (! in_time_t_range (new_value->it_interval.tv_sec)
36       || ! in_time_t_range (new_value->it_value.tv_sec))
37     {
38       __set_errno (EOVERFLOW);
39       return -1;
40     }
41   new_value_32.it_interval
42     = valid_timeval64_to_timeval32 (new_value->it_interval);
43   new_value_32.it_value
44     = valid_timeval64_to_timeval32 (new_value->it_value);
45 
46   if (old_value == NULL)
47     return INLINE_SYSCALL_CALL (setitimer, which, &new_value_32, NULL);
48 
49   struct __itimerval32 old_value_32;
50   if (INLINE_SYSCALL_CALL (setitimer, which, &new_value_32, &old_value_32)
51       == -1)
52     return -1;
53 
54   old_value->it_interval
55      = valid_timeval32_to_timeval64 (old_value_32.it_interval);
56   old_value->it_value
57      = valid_timeval32_to_timeval64 (old_value_32.it_value);
58   return 0;
59 #endif
60 }
61 
62 #if __TIMESIZE != 64
libc_hidden_def(__setitimer64)63 libc_hidden_def (__setitimer64)
64 int
65 __setitimer (__itimer_which_t which,
66              const struct itimerval *restrict new_value,
67              struct itimerval *restrict old_value)
68 {
69   int ret;
70   struct __itimerval64 new64, old64;
71 
72   new64.it_interval
73     = valid_timeval_to_timeval64 (new_value->it_interval);
74   new64.it_value
75     = valid_timeval_to_timeval64 (new_value->it_value);
76 
77   ret = __setitimer64 (which, &new64, old_value ? &old64 : NULL);
78 
79   if (ret == 0 && old_value != NULL)
80     {
81       old_value->it_interval
82         = valid_timeval64_to_timeval (old64.it_interval);
83       old_value->it_value
84         = valid_timeval64_to_timeval (old64.it_value);
85     }
86 
87   return ret;
88 }
89 #endif
90 weak_alias (__setitimer, setitimer)
91