builtin-grep: use external grep when we can take advantage of it

diff --git a/pkt-line.c b/pkt-line.c
index 69473046bf717c9b97470d7652c15377dd9fc9d5..bb3bab05cd203e114b24b778cb5f55218abdec95 100644 (file)
--- a/pkt-line.c
+++ b/pkt-line.c
@@ -19,7 +19,7 @@
 static void safe_write(int fd, const void *buf, unsigned n)
 {
        while (n) {
-               int ret = write(fd, buf, n);
+               int ret = xwrite(fd, buf, n);
                if (ret > 0) {
                        buf += ret;
                        n -= ret;
@@ -27,8 +27,6 @@ static void safe_write(int fd, const void *buf, unsigned n)
                }
                if (!ret)
                        die("write error (disk full?)");
-               if (errno == EAGAIN || errno == EINTR)
-                       continue;
                die("write error (%s)", strerror(errno));
        }
 }
@@ -68,12 +66,9 @@ static void safe_read(int fd, void *buffer, unsigned size)
        int n = 0;
 
        while (n < size) {
-               int ret = read(fd, buffer + n, size - n);
-               if (ret < 0) {
-                       if (errno == EINTR || errno == EAGAIN)
-                               continue;
+               int ret = xread(fd, buffer + n, size - n);
+               if (ret < 0)
                        die("read error (%s)", strerror(errno));
-               }
                if (!ret)
                        die("unexpected EOF");
                n += ret;