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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:40:15 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:40:15 +0000 |
| commit | 399644e47874bff147afb19c89228901ac39340e (patch) | |
| tree | 1c4c0b733f4c16b5783b41bebb19194a9ef62ad1 /man2/sgetmask.2 | |
| parent | Initial commit. (diff) | |
| download | manpages-399644e47874bff147afb19c89228901ac39340e.tar.xz manpages-399644e47874bff147afb19c89228901ac39340e.zip | |
Adding upstream version 6.05.01.upstream/6.05.01
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man2/sgetmask.2')
| -rw-r--r-- | man2/sgetmask.2 | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/man2/sgetmask.2 b/man2/sgetmask.2 new file mode 100644 index 0000000..d0c99a2 --- /dev/null +++ b/man2/sgetmask.2 @@ -0,0 +1,70 @@ +.\" Copyright (c) 2007 by Michael Kerrisk <mtk.manpages@gmail.com> +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.TH sgetmask 2 2023-03-30 "Linux man-pages 6.05.01" +.SH NAME +sgetmask, ssetmask \- manipulation of signal mask (obsolete) +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.BR "#include <sys/syscall.h>" " /* Definition of " SYS_* " constants */" +.B #include <unistd.h> +.PP +.B [[deprecated]] long syscall(SYS_sgetmask, void); +.BI "[[deprecated]] long syscall(SYS_ssetmask, long " newmask ); +.fi +.SH DESCRIPTION +These system calls are obsolete. +.IR "Do not use them" ; +use +.BR sigprocmask (2) +instead. +.PP +.BR sgetmask () +returns the signal mask of the calling process. +.PP +.BR ssetmask () +sets the signal mask of the calling process to the value given in +.IR newmask . +The previous signal mask is returned. +.PP +The signal masks dealt with by these two system calls +are plain bit masks (unlike the +.I sigset_t +used by +.BR sigprocmask (2)); +use +.BR sigmask (3) +to create and inspect these masks. +.SH RETURN VALUE +.BR sgetmask () +always successfully returns the signal mask. +.BR ssetmask () +always succeeds, and returns the previous signal mask. +.SH ERRORS +These system calls always succeed. +.SH STANDARDS +Linux. +.SH HISTORY +Since Linux 3.16, +.\" f6187769dae48234f3877df3c4d99294cc2254fa +support for these system calls is optional, +depending on whether the kernel was built with the +.B CONFIG_SGETMASK_SYSCALL +option. +.SH NOTES +These system calls are unaware of signal numbers greater than 31 +(i.e., real-time signals). +.PP +These system calls do not exist on x86-64. +.PP +It is not possible to block +.B SIGSTOP +or +.BR SIGKILL . +.SH SEE ALSO +.BR sigprocmask (2), +.BR signal (7) |