1SGETMASK(2)                Linux Programmer's Manual               SGETMASK(2)
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NAME

6       sgetmask, ssetmask - manipulation of signal mask (obsolete)
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SYNOPSIS

9       long sgetmask(void);
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11       long ssetmask(long newmask);
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13       Note: There are no glibc wrappers for these system calls; see NOTES.
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DESCRIPTION

16       These  system  calls are obsolete.  Do not use them; use sigprocmask(2)
17       instead.
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19       sgetmask() returns the signal mask of the calling process.
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21       ssetmask() sets the signal mask of the calling  process  to  the  value
22       given in newmask.  The previous signal mask is returned.
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24       The  signal  masks  dealt  with by these two system calls are plain bit
25       masks (unlike the sigset_t used by sigprocmask(2)); use  sigmask(3)  to
26       create and inspect these masks.
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RETURN VALUE

29       sgetmask()  always  successfully  returns  the signal mask.  ssetmask()
30       always succeeds, and returns the previous signal mask.
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ERRORS

33       These system calls always succeed.
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VERSIONS

36       Since Linux 3.16, support for these system calls is optional, depending
37       on  whether  the  kernel  was  built  with  the CONFIG_SGETMASK_SYSCALL
38       option.
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CONFORMING TO

41       These system calls are Linux-specific.
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NOTES

44       Glibc does not provide wrappers for these obsolete system calls; in the
45       unlikely event that you want to call them, use syscall(2).
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47       These system calls are unaware of signal numbers greater than 31 (i.e.,
48       real-time signals).
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50       These system calls do not exist on x86-64.
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52       It is not possible to block SIGSTOP or SIGKILL.
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SEE ALSO

55       sigprocmask(2), signal(7)
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COLOPHON

58       This page is part of release 5.04 of the Linux  man-pages  project.   A
59       description  of  the project, information about reporting bugs, and the
60       latest    version    of    this    page,    can     be     found     at
61       https://www.kernel.org/doc/man-pages/.
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65Linux                             2017-09-15                       SGETMASK(2)
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