about summary refs log tree commit diff
path: root/sysdeps/unix/sysv/linux/not-cancel.h
blob: d4f1e0fbde937c5810ec17dd1be827e235e3cea5 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
/* Uncancelable versions of cancelable interfaces.  Linux/NPTL version.
   Copyright (C) 2003-2022 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#ifndef NOT_CANCEL_H
# define NOT_CANCEL_H

#include <fcntl.h>
#include <sysdep.h>
#include <errno.h>
#include <unistd.h>
#include <sys/poll.h>
#include <sys/syscall.h>
#include <sys/wait.h>
#include <time.h>

/* Non cancellable open syscall.  */
__typeof (open) __open_nocancel;

/* Non cancellable open syscall (LFS version).  */
__typeof (open64) __open64_nocancel;

/* Non cancellable openat syscall.  */
__typeof (openat) __openat_nocancel;

/* Non cacellable openat syscall (LFS version).  */
__typeof (openat64) __openat64_nocancel;

/* Non cancellable read syscall.  */
__typeof (__read) __read_nocancel;

/* Non cancellable pread syscall (LFS version).  */
__typeof (__pread64) __pread64_nocancel;

/* Uncancelable write.  */
__typeof (__write) __write_nocancel;

/* Uncancelable close.  */
__typeof (__close) __close_nocancel;

/* Uncancelable fcntl.  */
__typeof (__fcntl) __fcntl64_nocancel;

#if IS_IN (libc) || IS_IN (rtld)
hidden_proto (__open_nocancel)
hidden_proto (__open64_nocancel)
hidden_proto (__openat_nocancel)
hidden_proto (__openat64_nocancel)
hidden_proto (__read_nocancel)
hidden_proto (__pread64_nocancel)
hidden_proto (__write_nocancel)
hidden_proto (__close_nocancel)
hidden_proto (__fcntl64_nocancel)
#endif

/* Non cancellable close syscall that does not also set errno in case of
   failure.  */
static inline void
__close_nocancel_nostatus (int fd)
{
  __close_nocancel (fd);
}

/* Non cancellable writev syscall that does not also set errno in case of
   failure.  */
static inline void
__writev_nocancel_nostatus (int fd, const struct iovec *iov, int iovcnt)
{
  INTERNAL_SYSCALL_CALL (writev, fd, iov, iovcnt);
}

static inline ssize_t
__getrandom_nocancel (void *buf, size_t buflen, unsigned int flags)
{
  return INTERNAL_SYSCALL_CALL (getrandom, buf, buflen, flags);
}

static inline int
__poll_infinity_nocancel (struct pollfd *fds, nfds_t nfds)
{
  return INLINE_SYSCALL_CALL (ppoll, fds, nfds, NULL, NULL, 0);
}

#endif /* NOT_CANCEL_H  */