Distinguish between lseek errors and read errores.

MFC after:	2 weeks

1 files changed, 11 insertions, 4 deletions

diff --git a/sbin/fsck_msdosfs/dir.c b/sbin/fsck_msdosfs/dir.c
index 38c70144d679..00bd33fc1860 100644
--- a/sbin/fsck_msdosfs/dir.c
+++ b/sbin/fsck_msdosfs/dir.c
@@ -35,6 +35,7 @@ static const char rcsid[] =
   "$FreeBSD$";
 #endif /* not lint */
 
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -329,8 +330,11 @@ delete(int f, struct bootblock *boot, struct fatEntry *fat, cl_t startcl,
 		}
 		off = startcl * boot->bpbSecPerClust + boot->ClusterOffset;
 		off *= boot->bpbBytesPerSec;
-		if (lseek(f, off, SEEK_SET) != off
-		    || read(f, delbuf, clsz) != clsz) {
+		if (lseek(f, off, SEEK_SET) != off) {
+			perr("Unable to lseek to %" PRId64, off);
+			return FSFATAL;
+		}
+		if (read(f, delbuf, clsz) != clsz) {
 			perr("Unable to read directory");
 			return FSFATAL;
 		}
@@ -338,8 +342,11 @@ delete(int f, struct bootblock *boot, struct fatEntry *fat, cl_t startcl,
 			*s = SLOT_DELETED;
 			s += 32;
 		}
-		if (lseek(f, off, SEEK_SET) != off
-		    || write(f, delbuf, clsz) != clsz) {
+		if (lseek(f, off, SEEK_SET) != off) {
+			perr("Unable to lseek to %" PRId64, off);
+			return FSFATAL;
+		}
+		if (write(f, delbuf, clsz) != clsz) {
 			perr("Unable to write directory");
 			return FSFATAL;
 		}