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-rw-r--r--wrapper.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/wrapper.c b/wrapper.c
index 4e04f7661b..93562f03ee 100644
--- a/wrapper.c
+++ b/wrapper.c
@@ -133,6 +133,44 @@ ssize_t xwrite(int fd, const void *buf, size_t len)
}
}
+ssize_t read_in_full(int fd, void *buf, size_t count)
+{
+ char *p = buf;
+ ssize_t total = 0;
+
+ while (count > 0) {
+ ssize_t loaded = xread(fd, p, count);
+ if (loaded <= 0)
+ return total ? total : loaded;
+ count -= loaded;
+ p += loaded;
+ total += loaded;
+ }
+
+ return total;
+}
+
+ssize_t write_in_full(int fd, const void *buf, size_t count)
+{
+ const char *p = buf;
+ ssize_t total = 0;
+
+ while (count > 0) {
+ ssize_t written = xwrite(fd, p, count);
+ if (written < 0)
+ return -1;
+ if (!written) {
+ errno = ENOSPC;
+ return -1;
+ }
+ count -= written;
+ p += written;
+ total += written;
+ }
+
+ return total;
+}
+
int xdup(int fd)
{
int ret = dup(fd);