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signals: require and always use sigaction()

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tftpd already requires sigaction() to compile, so there is no reason
to use anything else. It also allows for nicer combination of flags.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
H. Peter Anvin 2024-06-10 14:36:28 -07:00
parent e52af4207a
commit 33051a296c
6 changed files with 22 additions and 55 deletions
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14
tftpd/misc.c
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@ -19,19 +19,11 @@
#include "tftpd.h"
/*
* Set the signal handler and flags. Basically a user-friendly
* wrapper around sigaction().
* Set the signal handler and flags, and error out on failure.
*/
void set_signal(int signum, void (*handler) (int), int flags)
void set_signal(int signum, sighandler_t handler, int flags)
{
struct sigaction sa;
memset(&sa, 0, sizeof sa);
sa.sa_handler = handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = flags;
if (sigaction(signum, &sa, NULL)) {
if (tftp_signal(signum, handler, flags)) {
syslog(LOG_ERR, "sigaction: %m");
exit(EX_OSERR);
}