From: David Vašek <david.vasek@nic.cz>
Date: Fri, 19 Mar 2021 15:45:03 +0000 (+0100)
Subject: contrib: copy_file() -- make it recognisable, that it is the source file that doesn... 
X-Git-Tag: v3.1.0~126
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2e2d899ce87c7bb89ee307f00fe787aac16f92ee;p=thirdparty%2Fknot-dns.git

contrib: copy_file() -- make it recognisable, that it is the source file that doesn't exist

Not being used so far.
---

diff --git a/src/contrib/files.c b/src/contrib/files.c
index 7f24426f65..93e045ddcd 100644
--- a/src/contrib/files.c
+++ b/src/contrib/files.c
@@ -151,7 +151,7 @@ int copy_file(const char *dest, const char *src)
 
 	FILE *from = fopen(src, "r");
 	if (from == NULL) {
-		ret = knot_map_errno();
+		ret = errno == ENOENT ? KNOT_EFILE : knot_map_errno();
 		goto done;
 	}
 
diff --git a/src/contrib/files.h b/src/contrib/files.h
index c8e245752f..5d7ed0efb8 100644
--- a/src/contrib/files.h
+++ b/src/contrib/files.h
@@ -44,5 +44,8 @@ int open_tmp_file(const char *path, char **tmp_name, FILE **file, mode_t mode);
 
 /*!
  * Copies a file, possibly overwriting existing one, as an atomic operation.
+ *
+ * \return KNOT_EOK on success, KNOT_EFILE if the source file doesn't exist,
+ *         \or other KNOT_E* values in case of other errors.
  */
 int copy_file(const char *dest, const char *src);