From 7f3caba522f4d24764f29d83aa2de9198bb7f01c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 24 May 2024 06:52:22 +0200 Subject: Adding upstream version 6.8. Signed-off-by: Daniel Baumann --- man3/sigvec.3 | 282 ---------------------------------------------------------- 1 file changed, 282 deletions(-) delete mode 100644 man3/sigvec.3 (limited to 'man3/sigvec.3') diff --git a/man3/sigvec.3 b/man3/sigvec.3 deleted file mode 100644 index d5ae4b0..0000000 --- a/man3/sigvec.3 +++ /dev/null @@ -1,282 +0,0 @@ -'\" t -.\" Copyright (c) 2005 by Michael Kerrisk -.\" -.\" SPDX-License-Identifier: Linux-man-pages-copyleft -.\" -.TH sigvec 3 2023-10-31 "Linux man-pages 6.7" -.SH NAME -sigvec, sigblock, sigsetmask, siggetmask, sigmask \- BSD signal API -.SH LIBRARY -Standard C library -.RI ( libc ", " \-lc ) -.SH SYNOPSIS -.nf -.B #include -.P -.BI "[[deprecated]] int sigvec(int " sig ", const struct sigvec *" vec , -.BI " struct sigvec *" ovec ); -.P -.BI "[[deprecated]] int sigmask(int " signum ); -.P -.BI "[[deprecated]] int sigblock(int " mask ); -.BI "[[deprecated]] int sigsetmask(int " mask ); -.B [[deprecated]] int siggetmask(void); -.fi -.P -.RS -4 -Feature Test Macro Requirements for glibc (see -.BR feature_test_macros (7)): -.RE -.P -All functions shown above: -.nf - Since glibc 2.19: - _DEFAULT_SOURCE - glibc 2.19 and earlier: - _BSD_SOURCE -.fi -.SH DESCRIPTION -These functions are provided in glibc as a compatibility interface -for programs that make use of the historical BSD signal API. -This API is obsolete: new applications should use the POSIX signal API -.RB ( sigaction (2), -.BR sigprocmask (2), -etc.). -.P -The -.BR sigvec () -function sets and/or gets the disposition of the signal -.I sig -(like the POSIX -.BR sigaction (2)). -If -.I vec -is not NULL, it points to a -.I sigvec -structure that defines the new disposition for -.IR sig . -If -.I ovec -is not NULL, it points to a -.I sigvec -structure that is used to return the previous disposition of -.IR sig . -To obtain the current disposition of -.I sig -without changing it, specify NULL for -.IR vec , -and a non-null pointer for -.IR ovec . -.P -The dispositions for -.B SIGKILL -and -.B SIGSTOP -cannot be changed. -.P -The -.I sigvec -structure has the following form: -.P -.in +4n -.EX -struct sigvec { - void (*sv_handler)(int); /* Signal disposition */ - int sv_mask; /* Signals to be blocked in handler */ - int sv_flags; /* Flags */ -}; -.EE -.in -.P -The -.I sv_handler -field specifies the disposition of the signal, and is either: -the address of a signal handler function; -.BR SIG_DFL , -meaning the default disposition applies for the signal; or -.BR SIG_IGN , -meaning that the signal is ignored. -.P -If -.I sv_handler -specifies the address of a signal handler, then -.I sv_mask -specifies a mask of signals that are to be blocked while -the handler is executing. -In addition, the signal for which the handler is invoked is -also blocked. -Attempts to block -.B SIGKILL -or -.B SIGSTOP -are silently ignored. -.P -If -.I sv_handler -specifies the address of a signal handler, then the -.I sv_flags -field specifies flags controlling what happens when the handler is called. -This field may contain zero or more of the following flags: -.TP -.B SV_INTERRUPT -If the signal handler interrupts a blocking system call, -then upon return from the handler the system call is not restarted: -instead it fails with the error -.BR EINTR . -If this flag is not specified, then system calls are restarted -by default. -.TP -.B SV_RESETHAND -Reset the disposition of the signal to the default -before calling the signal handler. -If this flag is not specified, then the handler remains established -until explicitly removed by a later call to -.BR sigvec () -or until the process performs an -.BR execve (2). -.TP -.B SV_ONSTACK -Handle the signal on the alternate signal stack -(historically established under BSD using the obsolete -.BR sigstack () -function; the POSIX replacement is -.BR sigaltstack (2)). -.P -The -.BR sigmask () -macro constructs and returns a "signal mask" for -.IR signum . -For example, we can initialize the -.I vec.sv_mask -field given to -.BR sigvec () -using code such as the following: -.P -.in +4n -.EX -vec.sv_mask = sigmask(SIGQUIT) | sigmask(SIGABRT); - /* Block SIGQUIT and SIGABRT during - handler execution */ -.EE -.in -.P -The -.BR sigblock () -function adds the signals in -.I mask -to the process's signal mask -(like POSIX -.IR sigprocmask(SIG_BLOCK) ), -and returns the process's previous signal mask. -Attempts to block -.B SIGKILL -or -.B SIGSTOP -are silently ignored. -.P -The -.BR sigsetmask () -function sets the process's signal mask to the value given in -.I mask -(like POSIX -.IR sigprocmask(SIG_SETMASK) ), -and returns the process's previous signal mask. -.P -The -.BR siggetmask () -function returns the process's current signal mask. -This call is equivalent to -.IR sigblock(0) . -.SH RETURN VALUE -The -.BR sigvec () -function returns 0 on success; on error, it returns \-1 and sets -.I errno -to indicate the error. -.P -The -.BR sigblock () -and -.BR sigsetmask () -functions return the previous signal mask. -.P -The -.BR sigmask () -macro returns the signal mask for -.IR signum . -.SH ERRORS -See the ERRORS under -.BR sigaction (2) -and -.BR sigprocmask (2). -.SH ATTRIBUTES -For an explanation of the terms used in this section, see -.BR attributes (7). -.TS -allbox; -lbx lb lb -l l l. -Interface Attribute Value -T{ -.na -.nh -.BR sigvec (), -.BR sigmask (), -.BR sigblock (), -.BR sigsetmask (), -.BR siggetmask () -T} Thread safety MT-Safe -.TE -.SH STANDARDS -None. -.SH HISTORY -.TP -.BR sigvec () -.TQ -.BR sigblock () -.TQ -.BR sigmask () -.TQ -.BR sigsetmask () -4.3BSD. -.TP -.BR siggetmask () -Unclear origin. -.TP -.BR sigvec () -Removed in glibc 2.21. -.SH NOTES -On 4.3BSD, the -.BR signal () -function provided reliable semantics (as when calling -.BR sigvec () -with -.I vec.sv_mask -equal to 0). -On System V, -.BR signal () -provides unreliable semantics. -POSIX.1 leaves these aspects of -.BR signal () -unspecified. -See -.BR signal (2) -for further details. -.P -In order to wait for a signal, -BSD and System V both provided a function named -.BR sigpause (3), -but this function has a different argument on the two systems. -See -.BR sigpause (3) -for details. -.SH SEE ALSO -.BR kill (2), -.BR pause (2), -.BR sigaction (2), -.BR signal (2), -.BR sigprocmask (2), -.BR raise (3), -.BR sigpause (3), -.BR sigset (3), -.BR signal (7) -- cgit v1.2.3