Thread (3 messages) flat view 3 messages, 2 authors, 2016-06-15
DORMANTno replies

[PATCH 1/2] prefer xwrite instead of write

From: Erik Faye-Lund <hidden>
Date: 2016-06-15 22:59:41
Subsystem: the rest · Maintainer: Linus Torvalds

Our xwrite wrapper already deals with a few potential hazards, and
are as such more robust. Prefer it instead of write to get the
robustness benefits everywhere.

Signed-off-by: Erik Faye-Lund <redacted>
---
With this patch, we don't call write directly any more; all calls
goes via the xwrite-wrapper.

 builtin/merge.c    | 2 +-
 streaming.c        | 2 +-
 transport-helper.c | 5 ++---
 3 files changed, 4 insertions(+), 5 deletions(-)
diff --git a/builtin/merge.c b/builtin/merge.c
index 4941a6c..9383c31 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -367,7 +367,7 @@ static void squash_message(struct commit *commit, struct commit_list *remotehead
 			sha1_to_hex(commit->object.sha1));
 		pretty_print_commit(&ctx, commit, &out);
 	}
-	if (write(fd, out.buf, out.len) < 0)
+	if (xwrite(fd, out.buf, out.len) < 0)
 		die_errno(_("Writing SQUASH_MSG"));
 	if (close(fd))
 		die_errno(_("Finishing SQUASH_MSG"));
diff --git a/streaming.c b/streaming.c
index 9659f18..d7c9f32 100644
--- a/streaming.c
+++ b/streaming.c
@@ -538,7 +538,7 @@ int stream_blob_to_fd(int fd, unsigned const char *sha1, struct stream_filter *f
 			goto close_and_exit;
 	}
 	if (kept && (lseek(fd, kept - 1, SEEK_CUR) == (off_t) -1 ||
-		     write(fd, "", 1) != 1))
+		     xwrite(fd, "", 1) != 1))
 		goto close_and_exit;
 	result = 0;
 
diff --git a/transport-helper.c b/transport-helper.c
index 2010674..bf64ad7 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -1129,9 +1129,8 @@ static int udt_do_write(struct unidirectional_transfer *t)
 		return 0;	/* Nothing to write. */
 
 	transfer_debug("%s is writable", t->dest_name);
-	bytes = write(t->dest, t->buf, t->bufuse);
-	if (bytes < 0 && errno != EWOULDBLOCK && errno != EAGAIN &&
-		errno != EINTR) {
+	bytes = xwrite(t->dest, t->buf, t->bufuse);
+	if (bytes < 0 && errno != EWOULDBLOCK) {
 		error("write(%s) failed: %s", t->dest_name, strerror(errno));
 		return -1;
 	} else if (bytes > 0) {
-- 
1.8.4.msysgit.0

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