Update copy_fd to return a meaningful errno on failure.
Signed-off-by: Ronnie Sahlberg <[email protected]>
Signed-off-by: Jonathan Nieder <[email protected]>
---
copy.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/copy.c b/copy.c
index f2970ec..a8d366e 100644
--- a/copy.c
+++ b/copy.c
@@ -8,12 +8,17 @@ int copy_fd(int ifd, int ofd)
if (!len)
break;
if (len < 0) {
- return error("copy-fd: read returned %s",
- strerror(errno));
+ int save_errno = errno;
+ error("copy-fd: read returned %s", strerror(errno));
+ errno = save_errno;
+ return -1;
+ }
+ if (write_in_full(ofd, buffer, len) < 0) {
+ int save_errno = errno;
+ error("copy-fd: write returned %s", strerror(errno));
+ errno = save_errno;
+ return -1;
}
- if (write_in_full(ofd, buffer, len) < 0)
- return error("copy-fd: write returned %s",
- strerror(errno));
}
return 0;
}
--
2.1.0.rc2.206.gedb03e5
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