diff options
Diffstat (limited to 'libc/signal')
| -rw-r--r-- | libc/signal/sigblock.c | 41 | ||||
| -rw-r--r-- | libc/signal/sigpause.c | 19 | ||||
| -rw-r--r-- | libc/signal/sigset-cvt-mask.h | 44 | ||||
| -rw-r--r-- | libc/signal/sigsetmask.c | 45 |
4 files changed, 76 insertions, 73 deletions
diff --git a/libc/signal/sigblock.c b/libc/signal/sigblock.c index c02c234b6..62ef060ac 100644 --- a/libc/signal/sigblock.c +++ b/libc/signal/sigblock.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 94, 95, 96, 97, 98, 2001 Free Software Foundation, Inc. +/* Copyright (C) 1991, 1994-1998, 2001-2002 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -19,37 +19,20 @@ #include <errno.h> #include <signal.h> +#include "sigset-cvt-mask.h" + /* Block signals in MASK, returning the old mask. */ int __sigblock (int mask) { - register unsigned int sig; - sigset_t set, oset; - - if (__sigemptyset (&set) < 0) - return -1; - - if (sizeof (mask) == sizeof (set)) - *(int *) &set = mask; - else if (sizeof (unsigned long int) == sizeof (set)) - *(unsigned long int *) &set = (unsigned int) mask; - else - for (sig = 1; sig < NSIG && sig <= sizeof (mask) * 8; ++sig) - if ((mask & sigmask (sig)) && __sigaddset (&set, sig) < 0) - return -1; - - if (sigprocmask (SIG_BLOCK, &set, &oset) < 0) - return -1; - - if (sizeof (mask) == sizeof (oset)) - mask = *(int *) &oset; - else if (sizeof (unsigned long int) == sizeof (oset)) - mask = *(unsigned long int*) &oset; - else - for (sig = 1, mask = 0; sig < NSIG && sig <= sizeof (mask) * 8; ++sig) - if (__sigismember (&oset, sig)) - mask |= sigmask (sig); - - return mask; + sigset_t set, oset; + + if (sigset_set_old_mask (&set, mask) < 0) + return -1; + + if (sigprocmask (SIG_BLOCK, &set, &oset) < 0) + return -1; + + return sigset_get_old_mask (&oset); } strong_alias (__sigblock, sigblock) diff --git a/libc/signal/sigpause.c b/libc/signal/sigpause.c index dd05e6e0a..e25803a9b 100644 --- a/libc/signal/sigpause.c +++ b/libc/signal/sigpause.c @@ -21,12 +21,13 @@ #include <signal.h> #include <stddef.h> /* For NULL. */ +#include "sigset-cvt-mask.h" + /* Set the mask of blocked signals to MASK, wait for a signal to arrive, and then restore the mask. */ int __sigpause (int sig_or_mask, int is_sig) { sigset_t set; - int sig; if (is_sig != 0) { @@ -36,20 +37,8 @@ int __sigpause (int sig_or_mask, int is_sig) || sigdelset (&set, sig_or_mask) < 0) return -1; } - else - { - if (sigemptyset (&set) < 0) - return -1; - - if (sizeof (sig_or_mask) == sizeof (set)) - *(int *) &set = sig_or_mask; - else if (sizeof (unsigned long int) == sizeof (set)) - *(unsigned long int *) &set = (unsigned int) sig_or_mask; - else - for (sig = 1; sig < NSIG; ++sig) - if ((sig_or_mask & sigmask (sig)) && __sigaddset (&set, sig) < 0) - return -1; - } + else if (sigset_set_old_mask (&set, sig_or_mask) < 0) + return -1; return sigsuspend (&set); } diff --git a/libc/signal/sigset-cvt-mask.h b/libc/signal/sigset-cvt-mask.h new file mode 100644 index 000000000..ca4774dbd --- /dev/null +++ b/libc/signal/sigset-cvt-mask.h @@ -0,0 +1,44 @@ +/* Convert between lowlevel sigmask and libc representation of sigset_t. + Linux version. + Copyright (C) 1998, 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Joe Keane <jgk@jgk.org>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +static inline int __attribute__ ((unused)) +sigset_set_old_mask (sigset_t *set, int mask) +{ + unsigned long int *ptr; + int cnt; + + ptr = &set->__val[0]; + + *ptr++ = (unsigned int) mask; + + cnt = _SIGSET_NWORDS - 2; + do + *ptr++ = 0ul; + while (--cnt >= 0); + + return 0; +} + +static inline int __attribute__ ((unused)) +sigset_get_old_mask (const sigset_t *set) +{ + return (unsigned int) set->__val[0]; +} diff --git a/libc/signal/sigsetmask.c b/libc/signal/sigsetmask.c index 4c7a43e5f..4b27b54a9 100644 --- a/libc/signal/sigsetmask.c +++ b/libc/signal/sigsetmask.c @@ -19,35 +19,22 @@ #include <errno.h> #include <signal.h> +#include "sigset-cvt-mask.h" + /* Set the mask of blocked signals to MASK, returning the old mask. */ -int sigsetmask (int mask) +int +__sigsetmask (int mask) { - register unsigned int sig; - sigset_t set, oset; - - if (__sigemptyset (&set) < 0) - return -1; - - if (sizeof (mask) == sizeof (set)) - *(int *) &set = mask; - else if (sizeof (unsigned long int) == sizeof (set)) - *(unsigned long int *) &set = (unsigned int) mask; - else - for (sig = 1; sig < NSIG && sig <= sizeof (mask) * 8; ++sig) - if ((mask & sigmask (sig)) && __sigaddset (&set, sig) < 0) - return -1; - - if (sigprocmask (SIG_SETMASK, &set, &oset) < 0) - return -1; - - if (sizeof (mask) == sizeof (oset)) - mask = *(int *) &oset; - else if (sizeof (unsigned long int) == sizeof (oset)) - mask = *(unsigned long int *) &oset; - else - for (sig = 1, mask = 0; sig < NSIG && sig <= sizeof (mask) * 8; ++sig) - if (__sigismember (&oset, sig)) - mask |= sigmask (sig); - - return mask; + sigset_t set, oset; + + if (sigset_set_old_mask (&set, mask) < 0) + return -1; + + if (sigprocmask (SIG_SETMASK, &set, &oset) < 0) + return -1; + + + return sigset_get_old_mask (&oset); } + +weak_alias (__sigsetmask, sigsetmask) |