st

commit fb89d7045e672e67288f805beb0e690412d28108
parent 77967d9674c964cae46587ab0d19e98585a8cf21
Author: FRIGN <dev@frign.de>
Date:   Wed,  8 Jul 2015 23:49:25 +0200

Remove insane *_FILENO and EXIT_* usage

Any system having different assignments than the usual 0, 1, 2 for
the standard file numbers and 0, 1 for the exit-statuses is broken
beyond repair.
Let's keep it simple and just use the numbers, no reason to fall
out of the window here and bend down for POSIX.
In one occasion, the ret-variable was not necessary. The check was
rewritten.

Signed-off-by: Christoph Lohmann <20h@r-36.net>

Diffstat:
M
st.c
 | 
26
++++++++++++--------------

1 file changed, 12 insertions(+), 14 deletions(-)
diff --git a/st.c b/st.c
@@ -513,7 +513,7 @@ static STREscape strescseq;
 static int cmdfd;
 static pid_t pid;
 static Selection sel;
-static int iofd = STDOUT_FILENO;
+static int iofd = 1;
 static char **opt_cmd = NULL;
 static char *opt_io = NULL;
 static char *opt_title = NULL;
@@ -1207,7 +1207,7 @@ die(const char *errstr, ...) {
 	va_start(ap, errstr);
 	vfprintf(stderr, errstr, ap);
 	va_end(ap);
-	exit(EXIT_FAILURE);
+	exit(1);
 }
 
 void
@@ -1256,12 +1256,12 @@ execsh(void) {
 	signal(SIGALRM, SIG_DFL);
 
 	execvp(prog, args);
-	_exit(EXIT_FAILURE);
+	_exit(1);
 }
 
 void
 sigchld(int a) {
-	int stat, ret;
+	int stat;
 	pid_t p;
 
 	if((p = waitpid(pid, &stat, WNOHANG)) < 0)
@@ -1270,10 +1270,9 @@ sigchld(int a) {
 	if(pid != p)
 		return;
 
-	ret = WIFEXITED(stat) ? WEXITSTATUS(stat) : EXIT_FAILURE;
-	if (ret != EXIT_SUCCESS)
+	if (!WIFEXITED(stat) || WEXITSTATUS(stat))
 		die("child finished with error '%d'\n", stat);
-	exit(EXIT_SUCCESS);
+	exit(0);
 }
 
 
@@ -1309,8 +1308,7 @@ ttynew(void) {
 	if(opt_io) {
 		term.mode |= MODE_PRINT;
 		iofd = (!strcmp(opt_io, "-")) ?
-			  STDOUT_FILENO :
-			  open(opt_io, O_WRONLY | O_CREAT, 0666);
+			  1 : open(opt_io, O_WRONLY | O_CREAT, 0666);
 		if(iofd < 0) {
 			fprintf(stderr, "Error opening %s:%s\n",
 				opt_io, strerror(errno));
@@ -1320,7 +1318,7 @@ ttynew(void) {
 	if (opt_line) {
 		if((cmdfd = open(opt_line, O_RDWR)) < 0)
 			die("open line failed: %s\n", strerror(errno));
-		close(STDIN_FILENO);
+		close(0);
 		dup(cmdfd);
 		stty();
 		return;
@@ -1337,9 +1335,9 @@ ttynew(void) {
 	case 0:
 		close(iofd);
 		setsid(); /* create a new process group */
-		dup2(s, STDIN_FILENO);
-		dup2(s, STDOUT_FILENO);
-		dup2(s, STDERR_FILENO);
+		dup2(s, 0);
+		dup2(s, 1);
+		dup2(s, 2);
 		if(ioctl(s, TIOCSCTTY, NULL) < 0)
 			die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
 		close(s);
@@ -3871,7 +3869,7 @@ cmessage(XEvent *e) {
 	} else if(e->xclient.data.l[0] == xw.wmdeletewin) {
 		/* Send SIGHUP to shell */
 		kill(pid, SIGHUP);
-		exit(EXIT_SUCCESS);
+		exit(0);
 	}
 }