sinit

commit fd0f19b55727f4cc005bfa2c7959134e4a682617
parent 51664faebcc10b53a1a78cff95f0efc04a2c7f8e
Author: sin <sin@2f30.org>
Date:   Thu,  6 Feb 2014 11:27:32 +0000

Be less harsh and don't error out entirely

Diffstat:
M
sinit.c
 | 
28
++++++++++++++--------------
M
util.h
 | 
1
+
M
util/eprintf.c
 | 
18
++++++++++++++----

3 files changed, 29 insertions(+), 18 deletions(-)
diff --git a/sinit.c b/sinit.c
@@ -58,19 +58,21 @@ main(void)
 	unlink(fifopath);
 	umask(0);
 	if (mkfifo(fifopath, 0600) < 0)
-		eprintf("mkfifo %s:");
+		weprintf("sinit: mkfifo %s:");
 
 	fd = open(fifopath, O_RDWR | O_NONBLOCK);
 	if (fd < 0)
-		eprintf("open %s:", fifopath);
-	while (1) {
-		FD_ZERO(&rfds);
-		FD_SET(fd, &rfds);
-		n = select(fd + 1, &rfds, NULL, NULL, NULL);
-		if (n < 0)
-			eprintf("select:");
-		if (FD_ISSET(fd, &rfds))
-			dispatchcmd(fd);
+		weprintf("sinit: open %s:", fifopath);
+	if (fd >= 0) {
+		while (1) {
+			FD_ZERO(&rfds);
+			FD_SET(fd, &rfds);
+			n = select(fd + 1, &rfds, NULL, NULL, NULL);
+			if (n < 0)
+				eprintf("sinit: select:");
+			if (FD_ISSET(fd, &rfds))
+				dispatchcmd(fd);
+		}
 	}
 
 	return EXIT_SUCCESS;
@@ -97,9 +99,7 @@ dispatchcmd(int fd)
 
 	n = read(fd, buf, sizeof(buf) - 1);
 	if (n < 0)
-		eprintf("read:");
-	if (n == 0)
-		return;
+		weprintf("sinit: read:");
 	buf[n] = '\0';
 	p = strchr(buf, '\n');
 	if (p)
@@ -119,7 +119,7 @@ spawn(const char *file, char *const argv[])
 
 	pid = fork();
 	if (pid < 0)
-		eprintf("fork:");
+		weprintf("sinit: fork:");
 	if (pid == 0) {
 		setsid();
 		setpgid(0, 0);
diff --git a/util.h b/util.h
@@ -3,3 +3,4 @@
 
 void enprintf(int, const char *, ...);
 void eprintf(const char *, ...);
+void weprintf(const char *, ...);
diff --git a/util/eprintf.c b/util/eprintf.c
@@ -6,8 +6,6 @@
 
 #include "../util.h"
 
-char *argv0;
-
 static void venprintf(int, const char *, va_list);
 
 void
@@ -33,8 +31,6 @@ enprintf(int status, const char *fmt, ...)
 void
 venprintf(int status, const char *fmt, va_list ap)
 {
-	fprintf(stderr, "%s: ", argv0);
-
 	vfprintf(stderr, fmt, ap);
 
 	if(fmt[0] && fmt[strlen(fmt)-1] == ':') {
@@ -44,3 +40,17 @@ venprintf(int status, const char *fmt, va_list ap)
 
 	exit(status);
 }
+
+void
+weprintf(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	vfprintf(stderr, fmt, ap);
+	va_end(ap);
+	if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
+		fputc(' ', stderr);
+		perror(NULL);
+	}
+}