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comparison src/sysdep.c @ 259:11cf20601dec r20-5b28

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Import from CVS: tag r20-5b28
author cvs
date Mon, 13 Aug 2007 10:23:02 +0200
parents 084402c475ba
children 727739f917cb
comparison
equal deleted inserted replaced
258:58424f6abf56 259:11cf20601dec
892 static void 892 static void
893 init_sigio_on_device (struct device *d) 893 init_sigio_on_device (struct device *d)
894 { 894 {
895 int filedesc = DEVICE_INFD (d); 895 int filedesc = DEVICE_INFD (d);
896 896
897 #if defined (I_SETSIG) && !defined(HPUX10)
898 ioctl (filedesc, I_GETSIG, &DEVICE_OLD_SIGIO_FLAG (d));
899 DEVICE_OLD_SIGIO_FLAG (d) &= ~S_INPUT;
900 #elif defined (FASYNC)
901 DEVICE_OLD_SIGIO_FLAG (d) =
902 fcntl (filedesc, F_GETFL, 0) & ~FASYNC;
903 #endif
904
905 #if defined (FIOSSAIOOWN) 897 #if defined (FIOSSAIOOWN)
906 { /* HPUX stuff */ 898 { /* HPUX stuff */
907 int owner = getpid (); 899 int owner = getpid ();
908 int ioctl_status; 900 int ioctl_status;
909 if (DEVICE_TTY_P (d)) 901 if (DEVICE_TTY_P (d))
962 static void 954 static void
963 request_sigio_on_device (struct device *d) 955 request_sigio_on_device (struct device *d)
964 { 956 {
965 int filedesc = DEVICE_INFD (d); 957 int filedesc = DEVICE_INFD (d);
966 958
967 /* prevent redundant ioctl()s, which may cause syslog messages
968 (e.g. on Solaris) */
969 if (d->sigio_enabled)
970 return;
971
972 #if defined (I_SETSIG) && !defined(HPUX10) 959 #if defined (I_SETSIG) && !defined(HPUX10)
973 ioctl (filedesc, I_SETSIG, DEVICE_OLD_SIGIO_FLAG (d) | S_INPUT); 960 {
961 int events=0;
962 ioctl (filedesc, I_GETSIG, &events);
963 ioctl (filedesc, I_SETSIG, events | S_INPUT);
964 }
974 #elif defined (FASYNC) 965 #elif defined (FASYNC)
975 fcntl (filedesc, F_SETFL, DEVICE_OLD_SIGIO_FLAG (d) | FASYNC); 966 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) | FASYNC);
976 #elif defined (FIOSSAIOSTAT) 967 #elif defined (FIOSSAIOSTAT)
977 { 968 {
978 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for 969 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for
979 sockets and other devices for some bizarre reason. We guess 970 sockets and other devices for some bizarre reason. We guess
980 that an X device is a socket, and tty devices aren't. We then 971 that an X device is a socket, and tty devices aren't. We then
1001 #endif 992 #endif
1002 993
1003 #if defined (_CX_UX) /* #### Is this crap necessary? */ 994 #if defined (_CX_UX) /* #### Is this crap necessary? */
1004 EMACS_UNBLOCK_SIGNAL (SIGIO); 995 EMACS_UNBLOCK_SIGNAL (SIGIO);
1005 #endif 996 #endif
1006
1007 d->sigio_enabled = 1;
1008 } 997 }
1009 998
1010 static void 999 static void
1011 unrequest_sigio_on_device (struct device *d) 1000 unrequest_sigio_on_device (struct device *d)
1012 { 1001 {
1013 int filedesc = DEVICE_INFD (d); 1002 int filedesc = DEVICE_INFD (d);
1014 1003
1015 /* prevent redundant ioctl()s, which may cause syslog messages
1016 (e.g. on Solaris) */
1017 if (!d->sigio_enabled)
1018 return;
1019
1020 #if defined (I_SETSIG) && !defined(HPUX10) 1004 #if defined (I_SETSIG) && !defined(HPUX10)
1021 ioctl (filedesc, I_SETSIG, DEVICE_OLD_SIGIO_FLAG (d)); 1005 {
1006 int events=0;
1007 ioctl (filedesc, I_GETSIG, &events);
1008 ioctl (filedesc, I_SETSIG, events & ~S_INPUT);
1009 }
1022 #elif defined (FASYNC) 1010 #elif defined (FASYNC)
1023 fcntl (filedesc, F_SETFL, DEVICE_OLD_SIGIO_FLAG (d)); 1011 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) & ~FASYNC);
1024 #elif defined (FIOSSAIOSTAT) 1012 #elif defined (FIOSSAIOSTAT)
1025 { 1013 {
1026 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for 1014 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for
1027 sockets and other devices for some bizarre reason. We guess 1015 sockets and other devices for some bizarre reason. We guess
1028 that an X device is a socket, and tty devices aren't. We then 1016 that an X device is a socket, and tty devices aren't. We then
1046 { 1034 {
1047 int off = 0; 1035 int off = 0;
1048 ioctl (filedesc, FIOASYNC, &off); 1036 ioctl (filedesc, FIOASYNC, &off);
1049 } 1037 }
1050 #endif 1038 #endif
1051
1052 d->sigio_enabled = 0;
1053 } 1039 }
1054 1040
1055 void 1041 void
1056 request_sigio (void) 1042 request_sigio (void)
1057 { 1043 {