From: Eric Biggers <ebiggers3@gmail.com>
Date: Wed, 10 Jun 2015 00:45:38 +0000 (-0500)
Subject: file_io.c: set errno=EINVAL on unexpected end of file
X-Git-Tag: v1.8.2~57
X-Git-Url: https://wimlib.net/git/?p=wimlib;a=commitdiff_plain;h=97fb83608ac22580bbfeff1bdf3111f72d2c1634

file_io.c: set errno=EINVAL on unexpected end of file
---

diff --git a/src/file_io.c b/src/file_io.c
index 3176ce6f..f641aa28 100644
--- a/src/file_io.c
+++ b/src/file_io.c
@@ -38,7 +38,7 @@
  * Return values:
  *	WIMLIB_ERR_SUCCESS			(0)
  *	WIMLIB_ERR_READ				(errno set)
- *	WIMLIB_ERR_UNEXPECTED_END_OF_FILE	(errno set to 0)
+ *	WIMLIB_ERR_UNEXPECTED_END_OF_FILE	(errno set to EINVAL)
  */
 int
 full_read(struct filedes *fd, void *buf, size_t count)
@@ -47,7 +47,7 @@ full_read(struct filedes *fd, void *buf, size_t count)
 		ssize_t ret = read(fd->fd, buf, count);
 		if (unlikely(ret <= 0)) {
 			if (ret == 0) {
-				errno = 0;
+				errno = EINVAL;
 				return WIMLIB_ERR_UNEXPECTED_END_OF_FILE;
 			}
 			if (errno == EINTR)
@@ -100,7 +100,7 @@ pipe_read(struct filedes *fd, void *buf, size_t count, off_t offset)
  * Return values:
  *	WIMLIB_ERR_SUCCESS			(0)
  *	WIMLIB_ERR_READ				(errno set)
- *	WIMLIB_ERR_UNEXPECTED_END_OF_FILE	(errno set to 0)
+ *	WIMLIB_ERR_UNEXPECTED_END_OF_FILE	(errno set to EINVAL)
  *	WIMLIB_ERR_RESOURCE_ORDER		(errno set to ESPIPE)
  */
 int
@@ -113,7 +113,7 @@ full_pread(struct filedes *fd, void *buf, size_t count, off_t offset)
 		ssize_t ret = pread(fd->fd, buf, count, offset);
 		if (unlikely(ret <= 0)) {
 			if (ret == 0) {
-				errno = 0;
+				errno = EINVAL;
 				return WIMLIB_ERR_UNEXPECTED_END_OF_FILE;
 			}
 			if (errno == EINTR)
diff --git a/src/resource.c b/src/resource.c
index a4cc6c12..9afa25ff 100644
--- a/src/resource.c
+++ b/src/resource.c
@@ -103,7 +103,7 @@ struct data_range {
  *
  *	WIMLIB_ERR_SUCCESS (0)
  *	WIMLIB_ERR_READ			  (errno set)
- *	WIMLIB_ERR_UNEXPECTED_END_OF_FILE (errno set to 0)
+ *	WIMLIB_ERR_UNEXPECTED_END_OF_FILE (errno set to EINVAL)
  *	WIMLIB_ERR_NOMEM		  (errno set to ENOMEM)
  *	WIMLIB_ERR_DECOMPRESSION	  (errno set to EINVAL)
  *	WIMLIB_ERR_INVALID_CHUNK_SIZE	  (errno set to EINVAL)