On 11/28/13, 3:30 AM, Jiri Olsa wrote:
@@ -151,21 +152,26 @@ unsigned long convert_unit(unsigned long value, char *unit) return value; }+/* + * Read exactly 'n' bytes or return an error. + */ ssize_t readn(int fd, void *buf, size_t n) { void *buf_start = buf; + size_t left = n; - while (n) { - ssize_t ret = read(fd, buf, n); + while (left) { + ssize_t ret = read(fd, buf, left); if (ret <= 0) return ret;
handle EINTR errors? no need to fail readn if the system call is interrupted.
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