Remove use of the non-standard SA_INTERRUPT

include/sudo_compat.h

@@ -250,17 +250,10 @@ __dso_public int isblank(int);
 
 /*
  * Add IRIX-like sigaction_t for those without it.
- * SA_RESTART is not required by POSIX; SunOS has SA_INTERRUPT instead.
  */
 #ifndef HAVE_SIGACTION_T
 typedef struct sigaction sigaction_t;
 #endif
-#ifndef SA_INTERRUPT
-# define SA_INTERRUPT	0
-#endif
-#ifndef SA_RESTART
-# define SA_RESTART	0
-#endif
 
 /*
  * The nitems macro may be defined in sys/param.h

plugins/sudoers/timestamp.c

@@ -465,7 +465,7 @@ timestamp_lock_record(int fd, off_t pos, off_t len)
     got_signal = 0;
     memset(&sa, 0, sizeof(sa));
     sigemptyset(&sa.sa_mask);
-    sa.sa_flags = SA_INTERRUPT; /* don't restart system calls */
+    sa.sa_flags = 0; /* don't restart system calls */
     sa.sa_handler = timestamp_handler;
     (void) sigaction(SIGINT, &sa, &saveint);
     (void) sigaction(SIGQUIT, &sa, &savequit);

src/tcsetpgrp_nobg.c

@@ -60,7 +60,7 @@ tcsetpgrp_nobg(int fd, pid_t pgrp_id)
      */
     memset(&sa, 0, sizeof(sa));
     sigemptyset(&sa.sa_mask);
-    sa.sa_flags = SA_INTERRUPT; /* do not restart syscalls */
+    sa.sa_flags = 0; /* do not restart syscalls */
     sa.sa_handler = sigttou;
     got_sigttou = 0;
     (void)sigaction(SIGTTOU, &sa, &osa);

src/tgetpass.c

@@ -157,7 +157,7 @@ restart:
      */
     memset(&sa, 0, sizeof(sa));
     sigemptyset(&sa.sa_mask);
-    sa.sa_flags = SA_INTERRUPT;	/* don't restart system calls */
+    sa.sa_flags = 0;	/* don't restart system calls */
     sa.sa_handler = tgetpass_handler;
     (void) sigaction(SIGALRM, &sa, &savealrm);
     (void) sigaction(SIGINT, &sa, &saveint);