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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-07-16 19:29:27 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-07-16 22:47:59 +0200
commitbfd876dbf151df164b4d87de20aec39b24f205f9 (patch)
tree53ac348da6c430b1ecf5f546ee4758ac73cb16e0 /lib/util/write_data.c
parent74a064d9f15fa2d534e8b2d1ade68d10d5b65dfd (diff)
cleanup: move error handling into write_retry
If write_retry fails to write everything, it is *always* an error. This commit renames write_retry to write_data and moves error handling into the function, making a lot of error handling code redundant. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib/util/write_data.c')
-rw-r--r--lib/util/write_data.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/lib/util/write_data.c b/lib/util/write_data.c
new file mode 100644
index 0000000..82f3aca
--- /dev/null
+++ b/lib/util/write_data.c
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+#include <unistd.h>
+#include <errno.h>
+#include <stdio.h>
+
+#include "util.h"
+
+int write_data(const char *errstr, int fd, const void *data, size_t size)
+{
+ ssize_t ret;
+
+ while (size > 0) {
+ ret = write(fd, data, size);
+ if (ret == 0) {
+ fprintf(stderr, "%s: write truncated\n", errstr);
+ return -1;
+ }
+ if (ret < 0) {
+ if (errno == EINTR)
+ continue;
+ perror(errstr);
+ return -1;
+ }
+
+ data = (const char *)data + ret;
+ size -= ret;
+ }
+
+ return 0;
+}