dedup

commit 444786bf6ec93a0d2cdce9bcb5b87dd67a18281f
parent ed0383fb3d1d39ea20fe1e58f2b6c3cdaf66a042
Author: sin <sin@2f30.org>
Date:   Fri,  3 May 2019 14:20:01 +0100

Add error reporting functions

Diffstat:
M
block.c
 | 
26
++++++++++++++++++++++++++
M
block.h
 | 
2
++

2 files changed, 28 insertions(+), 0 deletions(-)
diff --git a/block.c b/block.c
@@ -3,6 +3,7 @@
 #include <sys/stat.h>
 
 #include <fcntl.h>
+#include <stdarg.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -10,6 +11,9 @@
 
 #include "block.h"
 
+#define NERRBUF	128
+static char errbuf[NERRBUF];
+
 int
 bcreat(char *path, int mode, struct bparam *bpar, struct bctx **bctx)
 {
@@ -153,3 +157,25 @@ bparamdef(void)
 
 	return &bpar;
 }
+
+void
+bseterr(char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	vsnprintf(errbuf, NERRBUF, fmt, ap);
+	va_end(ap);
+}
+
+void
+berr(char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	vfprintf(stderr, fmt, ap);
+	fprintf(stderr, ": %s\n", errbuf);
+	va_end(ap);
+	exit(1);
+}
diff --git a/block.h b/block.h
@@ -42,6 +42,8 @@ extern int bcheck(struct bctx *, unsigned char *);
 extern int bsync(struct bctx *);
 extern int bclose(struct bctx *);
 extern struct bparam *bparamdef(void);
+extern void bseterr(char *, ...);
+extern void berr(char *, ...);
 
 /* bcompat.c */
 extern int punchhole(int, off_t, off_t);