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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | STANDARDS | HISTORY | SEE ALSO | COLOPHON |
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siginterrupt(3) Library Functions Manual siginterrupt(3)
siginterrupt - allow signals to interrupt system calls
Standard C library (libc, -lc)
#include <signal.h>
[[deprecated]] int siginterrupt(int sig, int flag);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
siginterrupt():
_XOPEN_SOURCE >= 500
|| /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
|| /* glibc <= 2.19: */ _BSD_SOURCE
The siginterrupt() function changes the restart behavior when a
system call is interrupted by the signal sig. If the flag
argument is false (0), then system calls will be restarted if
interrupted by the specified signal sig. This is the default
behavior in Linux.
If the flag argument is true (1) and no data has been
transferred, then a system call interrupted by the signal sig
will return -1 and errno will be set to EINTR.
If the flag argument is true (1) and data transfer has started,
then the system call will be interrupted and will return the
actual amount of data transferred.
The siginterrupt() function returns 0 on success. It returns -1
if the signal number sig is invalid, with errno set to indicate
the error.
EINVAL The specified signal number is invalid.
For an explanation of the terms used in this section, see
attributes(7).
┌────────────────┬───────────────┬──────────────────────────────┐
│ Interface │ Attribute │ Value │
├────────────────┼───────────────┼──────────────────────────────┤
│ siginterrupt() │ Thread safety │ MT-Unsafe const:sigintr │
└────────────────┴───────────────┴──────────────────────────────┘
POSIX.1-2008.
4.3BSD, POSIX.1-2001. Obsolete in POSIX.1-2008, recommending the
use of sigaction(2) with the SA_RESTART flag instead.
signal(2)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
This page was obtained from the tarball man-pages-6.9.1.tar.gz
fetched from
⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
2024-06-26. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
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man-pages@man7.org
Linux man-pages 6.9.1 2024-05-02 siginterrupt(3)
Pages that refer to this page: sigaction(2), signal(2)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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