diff options
Diffstat (limited to 'man2/sigprocmask.2')
| -rw-r--r-- | man2/sigprocmask.2 | 80 |
1 files changed, 41 insertions, 39 deletions
diff --git a/man2/sigprocmask.2 b/man2/sigprocmask.2 index ae65e3400c..692ce601ff 100644 --- a/man2/sigprocmask.2 +++ b/man2/sigprocmask.2 @@ -116,45 +116,7 @@ Either the value specified in .I how was invalid or the kernel does not support the size passed in .I sigsetsize. -.SH STANDARDS -POSIX.1-2001, POSIX.1-2008. -.SH NOTES -It is not possible to block -.BR SIGKILL " or " SIGSTOP . -Attempts to do so are silently ignored. -.PP -Each of the threads in a process has its own signal mask. -.PP -A child created via -.BR fork (2) -inherits a copy of its parent's signal mask; -the signal mask is preserved across -.BR execve (2). -.PP -If -.BR SIGBUS , -.BR SIGFPE , -.BR SIGILL , -or -.B SIGSEGV -are generated -while they are blocked, the result is undefined, -unless the signal was generated by -.BR kill (2), -.BR sigqueue (3), -or -.BR raise (3). -.PP -See -.BR sigsetops (3) -for details on manipulating signal sets. -.PP -Note that it is permissible (although not very useful) to specify both -.I set -and -.I oldset -as NULL. -.\" +.SH VERSIONS .SS C library/kernel differences The kernel's definition of .I sigset_t @@ -209,6 +171,46 @@ wrapper function hides these details from us, transparently calling .BR rt_sigprocmask () when the kernel provides it. .\" +.SH STANDARDS +POSIX.1-2008. +.SH HISTORY +POSIX.1-2001. +.SH NOTES +It is not possible to block +.BR SIGKILL " or " SIGSTOP . +Attempts to do so are silently ignored. +.PP +Each of the threads in a process has its own signal mask. +.PP +A child created via +.BR fork (2) +inherits a copy of its parent's signal mask; +the signal mask is preserved across +.BR execve (2). +.PP +If +.BR SIGBUS , +.BR SIGFPE , +.BR SIGILL , +or +.B SIGSEGV +are generated +while they are blocked, the result is undefined, +unless the signal was generated by +.BR kill (2), +.BR sigqueue (3), +or +.BR raise (3). +.PP +See +.BR sigsetops (3) +for details on manipulating signal sets. +.PP +Note that it is permissible (although not very useful) to specify both +.I set +and +.I oldset +as NULL. .SH SEE ALSO .BR kill (2), .BR pause (2), |