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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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5
config.h
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@ -282,10 +282,7 @@ char *xstrdup(const char *);
#ifndef HAVE_SIGHANDLER_T
typedef void (*sighandler_t)(int);
#endif
#ifndef SIG_ERR
#define SIG_ERR NULL
#endif
sighandler_t tftp_signal(int, sighandler_t);
int tftp_signal(int, sighandler_t, int);
#ifndef HAVE_DUP2
int dup2(int, int);