diff options
Diffstat (limited to 'libc/sysdeps/linux/avr32/sigaction.c')
| -rw-r--r-- | libc/sysdeps/linux/avr32/sigaction.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/avr32/sigaction.c b/libc/sysdeps/linux/avr32/sigaction.c new file mode 100644 index 000000000..6817e1b1e --- /dev/null +++ b/libc/sysdeps/linux/avr32/sigaction.c @@ -0,0 +1,59 @@ +/* + * Copyright (C) 2004-2007 Atmel Corporation + * + * This file is subject to the terms and conditions of the GNU Lesser General + * Public License. See the file "COPYING.LIB" in the main directory of this + * archive for more details. + */ +#include <errno.h> +#include <signal.h> +#include <string.h> +#include <sys/syscall.h> +#include <bits/kernel_sigaction.h> + +#define SA_RESTORER 0x04000000 +extern void __default_rt_sa_restorer(void); + +libc_hidden_proto(memcpy) + +/* + * If act is not NULL, change the action for sig to *act. + * If oact is not NULL, put the old action for sig in *oact. + */ +int __libc_sigaction(int signum, const struct sigaction *act, + struct sigaction *oldact) +{ + struct kernel_sigaction kact, koact; + int result; + + if (act) { + kact.k_sa_handler = act->sa_handler; + memcpy(&kact.sa_mask, &act->sa_mask, sizeof (kact.sa_mask)); + kact.sa_flags = act->sa_flags; + if (kact.sa_flags & (SA_RESTORER | SA_ONSTACK)) + kact.sa_restorer = act->sa_restorer; + else + kact.sa_restorer = __default_rt_sa_restorer; + kact.sa_flags |= SA_RESTORER; + } + + result = __syscall_rt_sigaction(signum, act ? __ptrvalue(&kact) : NULL, + oldact ? __ptrvalue(&koact) : NULL, + _NSIG / 8); + + if (oldact && result >= 0) { + oldact->sa_handler = koact.k_sa_handler; + memcpy(&oldact->sa_mask, &koact.sa_mask, + sizeof(oldact->sa_mask)); + oldact->sa_flags = koact.sa_flags; + oldact->sa_restorer = koact.sa_restorer; + } + + return result; +} + +#ifndef LIBC_SIGACTION +libc_hidden_proto(sigaction) +weak_alias(__libc_sigaction, sigaction) +libc_hidden_weak(sigaction) +#endif |